@import url(https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap);
/*!
 *  Font Awesome 4.7.0 by @davegandy - http://fontawesome.io - @fontawesome
 *  License - http://fontawesome.io/license (Font: SIL OFL 1.1, CSS: MIT License)
 */@font-face{font-family:FontAwesome;font-style:normal;font-weight:400;src:url(/static/media/fontawesome-webfont.8b43027f47b20503057d.eot);src:url(/static/media/fontawesome-webfont.8b43027f47b20503057d.eot?#iefix&v=4.7.0) format("embedded-opentype"),url(/static/media/fontawesome-webfont.20fd1704ea223900efa9.woff2) format("woff2"),url(/static/media/fontawesome-webfont.f691f37e57f04c152e23.woff) format("woff"),url(/static/media/fontawesome-webfont.1e59d2330b4c6deb84b3.ttf) format("truetype"),url(/static/media/fontawesome-webfont.c1e38fd9e0e74ba58f7a.svg#fontawesomeregular) format("svg")}.fa{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;display:inline-block;font:normal normal normal 14px/1 FontAwesome;font-size:inherit;text-rendering:auto}.fa-lg{font-size:1.33333333em;line-height:.75em;vertical-align:-15%}.fa-2x{font-size:2em}.fa-3x{font-size:3em}.fa-4x{font-size:4em}.fa-5x{font-size:5em}.fa-fw{text-align:center;width:1.28571429em}.fa-ul{list-style-type:none;margin-left:2.14285714em;padding-left:0}.fa-ul>li{position:relative}.fa-li{left:-2.14285714em;position:absolute;text-align:center;top:.14285714em;width:2.14285714em}.fa-li.fa-lg{left:-1.85714286em}.fa-border{border:.08em solid #eee;border-radius:.1em;padding:.2em .25em .15em}.fa-pull-left{float:left}.fa-pull-right{float:right}.fa.fa-pull-left{margin-right:.3em}.fa.fa-pull-right{margin-left:.3em}.pull-right{float:right}.pull-left{float:left}.fa.pull-left{margin-right:.3em}.fa.pull-right{margin-left:.3em}.fa-spin{animation:fa-spin 2s linear infinite}.fa-pulse{animation:fa-spin 1s steps(8) infinite}@keyframes fa-spin{0%{transform:rotate(0deg)}to{transform:rotate(359deg)}}.fa-rotate-90{-ms-filter:"progid:DXImageTransform.Microsoft.BasicImage(rotation=1)";transform:rotate(90deg)}.fa-rotate-180{-ms-filter:"progid:DXImageTransform.Microsoft.BasicImage(rotation=2)";transform:rotate(180deg)}.fa-rotate-270{-ms-filter:"progid:DXImageTransform.Microsoft.BasicImage(rotation=3)";transform:rotate(270deg)}.fa-flip-horizontal{-ms-filter:"progid:DXImageTransform.Microsoft.BasicImage(rotation=0, mirror=1)";transform:scaleX(-1)}.fa-flip-vertical{-ms-filter:"progid:DXImageTransform.Microsoft.BasicImage(rotation=2, mirror=1)";transform:scaleY(-1)}:root .fa-flip-horizontal,:root .fa-flip-vertical,:root .fa-rotate-180,:root .fa-rotate-270,:root .fa-rotate-90{filter:none}.fa-stack{display:inline-block;height:2em;line-height:2em;position:relative;vertical-align:middle;width:2em}.fa-stack-1x,.fa-stack-2x{left:0;position:absolute;text-align:center;width:100%}.fa-stack-1x{line-height:inherit}.fa-stack-2x{font-size:2em}.fa-inverse{color:#fff}.fa-glass:before{content:"\f000"}.fa-music:before{content:"\f001"}.fa-search:before{content:"\f002"}.fa-envelope-o:before{content:"\f003"}.fa-heart:before{content:"\f004"}.fa-star:before{content:"\f005"}.fa-star-o:before{content:"\f006"}.fa-user:before{content:"\f007"}.fa-film:before{content:"\f008"}.fa-th-large:before{content:"\f009"}.fa-th:before{content:"\f00a"}.fa-th-list:before{content:"\f00b"}.fa-check:before{content:"\f00c"}.fa-close:before,.fa-remove:before,.fa-times:before{content:"\f00d"}.fa-search-plus:before{content:"\f00e"}.fa-search-minus:before{content:"\f010"}.fa-power-off:before{content:"\f011"}.fa-signal:before{content:"\f012"}.fa-cog:before,.fa-gear:before{content:"\f013"}.fa-trash-o:before{content:"\f014"}.fa-home:before{content:"\f015"}.fa-file-o:before{content:"\f016"}.fa-clock-o:before{content:"\f017"}.fa-road:before{content:"\f018"}.fa-download:before{content:"\f019"}.fa-arrow-circle-o-down:before{content:"\f01a"}.fa-arrow-circle-o-up:before{content:"\f01b"}.fa-inbox:before{content:"\f01c"}.fa-play-circle-o:before{content:"\f01d"}.fa-repeat:before,.fa-rotate-right:before{content:"\f01e"}.fa-refresh:before{content:"\f021"}.fa-list-alt:before{content:"\f022"}.fa-lock:before{content:"\f023"}.fa-flag:before{content:"\f024"}.fa-headphones:before{content:"\f025"}.fa-volume-off:before{content:"\f026"}.fa-volume-down:before{content:"\f027"}.fa-volume-up:before{content:"\f028"}.fa-qrcode:before{content:"\f029"}.fa-barcode:before{content:"\f02a"}.fa-tag:before{content:"\f02b"}.fa-tags:before{content:"\f02c"}.fa-book:before{content:"\f02d"}.fa-bookmark:before{content:"\f02e"}.fa-print:before{content:"\f02f"}.fa-camera:before{content:"\f030"}.fa-font:before{content:"\f031"}.fa-bold:before{content:"\f032"}.fa-italic:before{content:"\f033"}.fa-text-height:before{content:"\f034"}.fa-text-width:before{content:"\f035"}.fa-align-left:before{content:"\f036"}.fa-align-center:before{content:"\f037"}.fa-align-right:before{content:"\f038"}.fa-align-justify:before{content:"\f039"}.fa-list:before{content:"\f03a"}.fa-dedent:before,.fa-outdent:before{content:"\f03b"}.fa-indent:before{content:"\f03c"}.fa-video-camera:before{content:"\f03d"}.fa-image:before,.fa-photo:before,.fa-picture-o:before{content:"\f03e"}.fa-pencil:before{content:"\f040"}.fa-map-marker:before{content:"\f041"}.fa-adjust:before{content:"\f042"}.fa-tint:before{content:"\f043"}.fa-edit:before,.fa-pencil-square-o:before{content:"\f044"}.fa-share-square-o:before{content:"\f045"}.fa-check-square-o:before{content:"\f046"}.fa-arrows:before{content:"\f047"}.fa-step-backward:before{content:"\f048"}.fa-fast-backward:before{content:"\f049"}.fa-backward:before{content:"\f04a"}.fa-play:before{content:"\f04b"}.fa-pause:before{content:"\f04c"}.fa-stop:before{content:"\f04d"}.fa-forward:before{content:"\f04e"}.fa-fast-forward:before{content:"\f050"}.fa-step-forward:before{content:"\f051"}.fa-eject:before{content:"\f052"}.fa-chevron-left:before{content:"\f053"}.fa-chevron-right:before{content:"\f054"}.fa-plus-circle:before{content:"\f055"}.fa-minus-circle:before{content:"\f056"}.fa-times-circle:before{content:"\f057"}.fa-check-circle:before{content:"\f058"}.fa-question-circle:before{content:"\f059"}.fa-info-circle:before{content:"\f05a"}.fa-crosshairs:before{content:"\f05b"}.fa-times-circle-o:before{content:"\f05c"}.fa-check-circle-o:before{content:"\f05d"}.fa-ban:before{content:"\f05e"}.fa-arrow-left:before{content:"\f060"}.fa-arrow-right:before{content:"\f061"}.fa-arrow-up:before{content:"\f062"}.fa-arrow-down:before{content:"\f063"}.fa-mail-forward:before,.fa-share:before{content:"\f064"}.fa-expand:before{content:"\f065"}.fa-compress:before{content:"\f066"}.fa-plus:before{content:"\f067"}.fa-minus:before{content:"\f068"}.fa-asterisk:before{content:"\f069"}.fa-exclamation-circle:before{content:"\f06a"}.fa-gift:before{content:"\f06b"}.fa-leaf:before{content:"\f06c"}.fa-fire:before{content:"\f06d"}.fa-eye:before{content:"\f06e"}.fa-eye-slash:before{content:"\f070"}.fa-exclamation-triangle:before,.fa-warning:before{content:"\f071"}.fa-plane:before{content:"\f072"}.fa-calendar:before{content:"\f073"}.fa-random:before{content:"\f074"}.fa-comment:before{content:"\f075"}.fa-magnet:before{content:"\f076"}.fa-chevron-up:before{content:"\f077"}.fa-chevron-down:before{content:"\f078"}.fa-retweet:before{content:"\f079"}.fa-shopping-cart:before{content:"\f07a"}.fa-folder:before{content:"\f07b"}.fa-folder-open:before{content:"\f07c"}.fa-arrows-v:before{content:"\f07d"}.fa-arrows-h:before{content:"\f07e"}.fa-bar-chart-o:before,.fa-bar-chart:before{content:"\f080"}.fa-twitter-square:before{content:"\f081"}.fa-facebook-square:before{content:"\f082"}.fa-camera-retro:before{content:"\f083"}.fa-key:before{content:"\f084"}.fa-cogs:before,.fa-gears:before{content:"\f085"}.fa-comments:before{content:"\f086"}.fa-thumbs-o-up:before{content:"\f087"}.fa-thumbs-o-down:before{content:"\f088"}.fa-star-half:before{content:"\f089"}.fa-heart-o:before{content:"\f08a"}.fa-sign-out:before{content:"\f08b"}.fa-linkedin-square:before{content:"\f08c"}.fa-thumb-tack:before{content:"\f08d"}.fa-external-link:before{content:"\f08e"}.fa-sign-in:before{content:"\f090"}.fa-trophy:before{content:"\f091"}.fa-github-square:before{content:"\f092"}.fa-upload:before{content:"\f093"}.fa-lemon-o:before{content:"\f094"}.fa-phone:before{content:"\f095"}.fa-square-o:before{content:"\f096"}.fa-bookmark-o:before{content:"\f097"}.fa-phone-square:before{content:"\f098"}.fa-twitter:before{content:"\f099"}.fa-facebook-f:before,.fa-facebook:before{content:"\f09a"}.fa-github:before{content:"\f09b"}.fa-unlock:before{content:"\f09c"}.fa-credit-card:before{content:"\f09d"}.fa-feed:before,.fa-rss:before{content:"\f09e"}.fa-hdd-o:before{content:"\f0a0"}.fa-bullhorn:before{content:"\f0a1"}.fa-bell:before{content:"\f0f3"}.fa-certificate:before{content:"\f0a3"}.fa-hand-o-right:before{content:"\f0a4"}.fa-hand-o-left:before{content:"\f0a5"}.fa-hand-o-up:before{content:"\f0a6"}.fa-hand-o-down:before{content:"\f0a7"}.fa-arrow-circle-left:before{content:"\f0a8"}.fa-arrow-circle-right:before{content:"\f0a9"}.fa-arrow-circle-up:before{content:"\f0aa"}.fa-arrow-circle-down:before{content:"\f0ab"}.fa-globe:before{content:"\f0ac"}.fa-wrench:before{content:"\f0ad"}.fa-tasks:before{content:"\f0ae"}.fa-filter:before{content:"\f0b0"}.fa-briefcase:before{content:"\f0b1"}.fa-arrows-alt:before{content:"\f0b2"}.fa-group:before,.fa-users:before{content:"\f0c0"}.fa-chain:before,.fa-link:before{content:"\f0c1"}.fa-cloud:before{content:"\f0c2"}.fa-flask:before{content:"\f0c3"}.fa-cut:before,.fa-scissors:before{content:"\f0c4"}.fa-copy:before,.fa-files-o:before{content:"\f0c5"}.fa-paperclip:before{content:"\f0c6"}.fa-floppy-o:before,.fa-save:before{content:"\f0c7"}.fa-square:before{content:"\f0c8"}.fa-bars:before,.fa-navicon:before,.fa-reorder:before{content:"\f0c9"}.fa-list-ul:before{content:"\f0ca"}.fa-list-ol:before{content:"\f0cb"}.fa-strikethrough:before{content:"\f0cc"}.fa-underline:before{content:"\f0cd"}.fa-table:before{content:"\f0ce"}.fa-magic:before{content:"\f0d0"}.fa-truck:before{content:"\f0d1"}.fa-pinterest:before{content:"\f0d2"}.fa-pinterest-square:before{content:"\f0d3"}.fa-google-plus-square:before{content:"\f0d4"}.fa-google-plus:before{content:"\f0d5"}.fa-money:before{content:"\f0d6"}.fa-caret-down:before{content:"\f0d7"}.fa-caret-up:before{content:"\f0d8"}.fa-caret-left:before{content:"\f0d9"}.fa-caret-right:before{content:"\f0da"}.fa-columns:before{content:"\f0db"}.fa-sort:before,.fa-unsorted:before{content:"\f0dc"}.fa-sort-desc:before,.fa-sort-down:before{content:"\f0dd"}.fa-sort-asc:before,.fa-sort-up:before{content:"\f0de"}.fa-envelope:before{content:"\f0e0"}.fa-linkedin:before{content:"\f0e1"}.fa-rotate-left:before,.fa-undo:before{content:"\f0e2"}.fa-gavel:before,.fa-legal:before{content:"\f0e3"}.fa-dashboard:before,.fa-tachometer:before{content:"\f0e4"}.fa-comment-o:before{content:"\f0e5"}.fa-comments-o:before{content:"\f0e6"}.fa-bolt:before,.fa-flash:before{content:"\f0e7"}.fa-sitemap:before{content:"\f0e8"}.fa-umbrella:before{content:"\f0e9"}.fa-clipboard:before,.fa-paste:before{content:"\f0ea"}.fa-lightbulb-o:before{content:"\f0eb"}.fa-exchange:before{content:"\f0ec"}.fa-cloud-download:before{content:"\f0ed"}.fa-cloud-upload:before{content:"\f0ee"}.fa-user-md:before{content:"\f0f0"}.fa-stethoscope:before{content:"\f0f1"}.fa-suitcase:before{content:"\f0f2"}.fa-bell-o:before{content:"\f0a2"}.fa-coffee:before{content:"\f0f4"}.fa-cutlery:before{content:"\f0f5"}.fa-file-text-o:before{content:"\f0f6"}.fa-building-o:before{content:"\f0f7"}.fa-hospital-o:before{content:"\f0f8"}.fa-ambulance:before{content:"\f0f9"}.fa-medkit:before{content:"\f0fa"}.fa-fighter-jet:before{content:"\f0fb"}.fa-beer:before{content:"\f0fc"}.fa-h-square:before{content:"\f0fd"}.fa-plus-square:before{content:"\f0fe"}.fa-angle-double-left:before{content:"\f100"}.fa-angle-double-right:before{content:"\f101"}.fa-angle-double-up:before{content:"\f102"}.fa-angle-double-down:before{content:"\f103"}.fa-angle-left:before{content:"\f104"}.fa-angle-right:before{content:"\f105"}.fa-angle-up:before{content:"\f106"}.fa-angle-down:before{content:"\f107"}.fa-desktop:before{content:"\f108"}.fa-laptop:before{content:"\f109"}.fa-tablet:before{content:"\f10a"}.fa-mobile-phone:before,.fa-mobile:before{content:"\f10b"}.fa-circle-o:before{content:"\f10c"}.fa-quote-left:before{content:"\f10d"}.fa-quote-right:before{content:"\f10e"}.fa-spinner:before{content:"\f110"}.fa-circle:before{content:"\f111"}.fa-mail-reply:before,.fa-reply:before{content:"\f112"}.fa-github-alt:before{content:"\f113"}.fa-folder-o:before{content:"\f114"}.fa-folder-open-o:before{content:"\f115"}.fa-smile-o:before{content:"\f118"}.fa-frown-o:before{content:"\f119"}.fa-meh-o:before{content:"\f11a"}.fa-gamepad:before{content:"\f11b"}.fa-keyboard-o:before{content:"\f11c"}.fa-flag-o:before{content:"\f11d"}.fa-flag-checkered:before{content:"\f11e"}.fa-terminal:before{content:"\f120"}.fa-code:before{content:"\f121"}.fa-mail-reply-all:before,.fa-reply-all:before{content:"\f122"}.fa-star-half-empty:before,.fa-star-half-full:before,.fa-star-half-o:before{content:"\f123"}.fa-location-arrow:before{content:"\f124"}.fa-crop:before{content:"\f125"}.fa-code-fork:before{content:"\f126"}.fa-chain-broken:before,.fa-unlink:before{content:"\f127"}.fa-question:before{content:"\f128"}.fa-info:before{content:"\f129"}.fa-exclamation:before{content:"\f12a"}.fa-superscript:before{content:"\f12b"}.fa-subscript:before{content:"\f12c"}.fa-eraser:before{content:"\f12d"}.fa-puzzle-piece:before{content:"\f12e"}.fa-microphone:before{content:"\f130"}.fa-microphone-slash:before{content:"\f131"}.fa-shield:before{content:"\f132"}.fa-calendar-o:before{content:"\f133"}.fa-fire-extinguisher:before{content:"\f134"}.fa-rocket:before{content:"\f135"}.fa-maxcdn:before{content:"\f136"}.fa-chevron-circle-left:before{content:"\f137"}.fa-chevron-circle-right:before{content:"\f138"}.fa-chevron-circle-up:before{content:"\f139"}.fa-chevron-circle-down:before{content:"\f13a"}.fa-html5:before{content:"\f13b"}.fa-css3:before{content:"\f13c"}.fa-anchor:before{content:"\f13d"}.fa-unlock-alt:before{content:"\f13e"}.fa-bullseye:before{content:"\f140"}.fa-ellipsis-h:before{content:"\f141"}.fa-ellipsis-v:before{content:"\f142"}.fa-rss-square:before{content:"\f143"}.fa-play-circle:before{content:"\f144"}.fa-ticket:before{content:"\f145"}.fa-minus-square:before{content:"\f146"}.fa-minus-square-o:before{content:"\f147"}.fa-level-up:before{content:"\f148"}.fa-level-down:before{content:"\f149"}.fa-check-square:before{content:"\f14a"}.fa-pencil-square:before{content:"\f14b"}.fa-external-link-square:before{content:"\f14c"}.fa-share-square:before{content:"\f14d"}.fa-compass:before{content:"\f14e"}.fa-caret-square-o-down:before,.fa-toggle-down:before{content:"\f150"}.fa-caret-square-o-up:before,.fa-toggle-up:before{content:"\f151"}.fa-caret-square-o-right:before,.fa-toggle-right:before{content:"\f152"}.fa-eur:before,.fa-euro:before{content:"\f153"}.fa-gbp:before{content:"\f154"}.fa-dollar:before,.fa-usd:before{content:"\f155"}.fa-inr:before,.fa-rupee:before{content:"\f156"}.fa-cny:before,.fa-jpy:before,.fa-rmb:before,.fa-yen:before{content:"\f157"}.fa-rouble:before,.fa-rub:before,.fa-ruble:before{content:"\f158"}.fa-krw:before,.fa-won:before{content:"\f159"}.fa-bitcoin:before,.fa-btc:before{content:"\f15a"}.fa-file:before{content:"\f15b"}.fa-file-text:before{content:"\f15c"}.fa-sort-alpha-asc:before{content:"\f15d"}.fa-sort-alpha-desc:before{content:"\f15e"}.fa-sort-amount-asc:before{content:"\f160"}.fa-sort-amount-desc:before{content:"\f161"}.fa-sort-numeric-asc:before{content:"\f162"}.fa-sort-numeric-desc:before{content:"\f163"}.fa-thumbs-up:before{content:"\f164"}.fa-thumbs-down:before{content:"\f165"}.fa-youtube-square:before{content:"\f166"}.fa-youtube:before{content:"\f167"}.fa-xing:before{content:"\f168"}.fa-xing-square:before{content:"\f169"}.fa-youtube-play:before{content:"\f16a"}.fa-dropbox:before{content:"\f16b"}.fa-stack-overflow:before{content:"\f16c"}.fa-instagram:before{content:"\f16d"}.fa-flickr:before{content:"\f16e"}.fa-adn:before{content:"\f170"}.fa-bitbucket:before{content:"\f171"}.fa-bitbucket-square:before{content:"\f172"}.fa-tumblr:before{content:"\f173"}.fa-tumblr-square:before{content:"\f174"}.fa-long-arrow-down:before{content:"\f175"}.fa-long-arrow-up:before{content:"\f176"}.fa-long-arrow-left:before{content:"\f177"}.fa-long-arrow-right:before{content:"\f178"}.fa-apple:before{content:"\f179"}.fa-windows:before{content:"\f17a"}.fa-android:before{content:"\f17b"}.fa-linux:before{content:"\f17c"}.fa-dribbble:before{content:"\f17d"}.fa-skype:before{content:"\f17e"}.fa-foursquare:before{content:"\f180"}.fa-trello:before{content:"\f181"}.fa-female:before{content:"\f182"}.fa-male:before{content:"\f183"}.fa-gittip:before,.fa-gratipay:before{content:"\f184"}.fa-sun-o:before{content:"\f185"}.fa-moon-o:before{content:"\f186"}.fa-archive:before{content:"\f187"}.fa-bug:before{content:"\f188"}.fa-vk:before{content:"\f189"}.fa-weibo:before{content:"\f18a"}.fa-renren:before{content:"\f18b"}.fa-pagelines:before{content:"\f18c"}.fa-stack-exchange:before{content:"\f18d"}.fa-arrow-circle-o-right:before{content:"\f18e"}.fa-arrow-circle-o-left:before{content:"\f190"}.fa-caret-square-o-left:before,.fa-toggle-left:before{content:"\f191"}.fa-dot-circle-o:before{content:"\f192"}.fa-wheelchair:before{content:"\f193"}.fa-vimeo-square:before{content:"\f194"}.fa-try:before,.fa-turkish-lira:before{content:"\f195"}.fa-plus-square-o:before{content:"\f196"}.fa-space-shuttle:before{content:"\f197"}.fa-slack:before{content:"\f198"}.fa-envelope-square:before{content:"\f199"}.fa-wordpress:before{content:"\f19a"}.fa-openid:before{content:"\f19b"}.fa-bank:before,.fa-institution:before,.fa-university:before{content:"\f19c"}.fa-graduation-cap:before,.fa-mortar-board:before{content:"\f19d"}.fa-yahoo:before{content:"\f19e"}.fa-google:before{content:"\f1a0"}.fa-reddit:before{content:"\f1a1"}.fa-reddit-square:before{content:"\f1a2"}.fa-stumbleupon-circle:before{content:"\f1a3"}.fa-stumbleupon:before{content:"\f1a4"}.fa-delicious:before{content:"\f1a5"}.fa-digg:before{content:"\f1a6"}.fa-pied-piper-pp:before{content:"\f1a7"}.fa-pied-piper-alt:before{content:"\f1a8"}.fa-drupal:before{content:"\f1a9"}.fa-joomla:before{content:"\f1aa"}.fa-language:before{content:"\f1ab"}.fa-fax:before{content:"\f1ac"}.fa-building:before{content:"\f1ad"}.fa-child:before{content:"\f1ae"}.fa-paw:before{content:"\f1b0"}.fa-spoon:before{content:"\f1b1"}.fa-cube:before{content:"\f1b2"}.fa-cubes:before{content:"\f1b3"}.fa-behance:before{content:"\f1b4"}.fa-behance-square:before{content:"\f1b5"}.fa-steam:before{content:"\f1b6"}.fa-steam-square:before{content:"\f1b7"}.fa-recycle:before{content:"\f1b8"}.fa-automobile:before,.fa-car:before{content:"\f1b9"}.fa-cab:before,.fa-taxi:before{content:"\f1ba"}.fa-tree:before{content:"\f1bb"}.fa-spotify:before{content:"\f1bc"}.fa-deviantart:before{content:"\f1bd"}.fa-soundcloud:before{content:"\f1be"}.fa-database:before{content:"\f1c0"}.fa-file-pdf-o:before{content:"\f1c1"}.fa-file-word-o:before{content:"\f1c2"}.fa-file-excel-o:before{content:"\f1c3"}.fa-file-powerpoint-o:before{content:"\f1c4"}.fa-file-image-o:before,.fa-file-photo-o:before,.fa-file-picture-o:before{content:"\f1c5"}.fa-file-archive-o:before,.fa-file-zip-o:before{content:"\f1c6"}.fa-file-audio-o:before,.fa-file-sound-o:before{content:"\f1c7"}.fa-file-movie-o:before,.fa-file-video-o:before{content:"\f1c8"}.fa-file-code-o:before{content:"\f1c9"}.fa-vine:before{content:"\f1ca"}.fa-codepen:before{content:"\f1cb"}.fa-jsfiddle:before{content:"\f1cc"}.fa-life-bouy:before,.fa-life-buoy:before,.fa-life-ring:before,.fa-life-saver:before,.fa-support:before{content:"\f1cd"}.fa-circle-o-notch:before{content:"\f1ce"}.fa-ra:before,.fa-rebel:before,.fa-resistance:before{content:"\f1d0"}.fa-empire:before,.fa-ge:before{content:"\f1d1"}.fa-git-square:before{content:"\f1d2"}.fa-git:before{content:"\f1d3"}.fa-hacker-news:before,.fa-y-combinator-square:before,.fa-yc-square:before{content:"\f1d4"}.fa-tencent-weibo:before{content:"\f1d5"}.fa-qq:before{content:"\f1d6"}.fa-wechat:before,.fa-weixin:before{content:"\f1d7"}.fa-paper-plane:before,.fa-send:before{content:"\f1d8"}.fa-paper-plane-o:before,.fa-send-o:before{content:"\f1d9"}.fa-history:before{content:"\f1da"}.fa-circle-thin:before{content:"\f1db"}.fa-header:before{content:"\f1dc"}.fa-paragraph:before{content:"\f1dd"}.fa-sliders:before{content:"\f1de"}.fa-share-alt:before{content:"\f1e0"}.fa-share-alt-square:before{content:"\f1e1"}.fa-bomb:before{content:"\f1e2"}.fa-futbol-o:before,.fa-soccer-ball-o:before{content:"\f1e3"}.fa-tty:before{content:"\f1e4"}.fa-binoculars:before{content:"\f1e5"}.fa-plug:before{content:"\f1e6"}.fa-slideshare:before{content:"\f1e7"}.fa-twitch:before{content:"\f1e8"}.fa-yelp:before{content:"\f1e9"}.fa-newspaper-o:before{content:"\f1ea"}.fa-wifi:before{content:"\f1eb"}.fa-calculator:before{content:"\f1ec"}.fa-paypal:before{content:"\f1ed"}.fa-google-wallet:before{content:"\f1ee"}.fa-cc-visa:before{content:"\f1f0"}.fa-cc-mastercard:before{content:"\f1f1"}.fa-cc-discover:before{content:"\f1f2"}.fa-cc-amex:before{content:"\f1f3"}.fa-cc-paypal:before{content:"\f1f4"}.fa-cc-stripe:before{content:"\f1f5"}.fa-bell-slash:before{content:"\f1f6"}.fa-bell-slash-o:before{content:"\f1f7"}.fa-trash:before{content:"\f1f8"}.fa-copyright:before{content:"\f1f9"}.fa-at:before{content:"\f1fa"}.fa-eyedropper:before{content:"\f1fb"}.fa-paint-brush:before{content:"\f1fc"}.fa-birthday-cake:before{content:"\f1fd"}.fa-area-chart:before{content:"\f1fe"}.fa-pie-chart:before{content:"\f200"}.fa-line-chart:before{content:"\f201"}.fa-lastfm:before{content:"\f202"}.fa-lastfm-square:before{content:"\f203"}.fa-toggle-off:before{content:"\f204"}.fa-toggle-on:before{content:"\f205"}.fa-bicycle:before{content:"\f206"}.fa-bus:before{content:"\f207"}.fa-ioxhost:before{content:"\f208"}.fa-angellist:before{content:"\f209"}.fa-cc:before{content:"\f20a"}.fa-ils:before,.fa-shekel:before,.fa-sheqel:before{content:"\f20b"}.fa-meanpath:before{content:"\f20c"}.fa-buysellads:before{content:"\f20d"}.fa-connectdevelop:before{content:"\f20e"}.fa-dashcube:before{content:"\f210"}.fa-forumbee:before{content:"\f211"}.fa-leanpub:before{content:"\f212"}.fa-sellsy:before{content:"\f213"}.fa-shirtsinbulk:before{content:"\f214"}.fa-simplybuilt:before{content:"\f215"}.fa-skyatlas:before{content:"\f216"}.fa-cart-plus:before{content:"\f217"}.fa-cart-arrow-down:before{content:"\f218"}.fa-diamond:before{content:"\f219"}.fa-ship:before{content:"\f21a"}.fa-user-secret:before{content:"\f21b"}.fa-motorcycle:before{content:"\f21c"}.fa-street-view:before{content:"\f21d"}.fa-heartbeat:before{content:"\f21e"}.fa-venus:before{content:"\f221"}.fa-mars:before{content:"\f222"}.fa-mercury:before{content:"\f223"}.fa-intersex:before,.fa-transgender:before{content:"\f224"}.fa-transgender-alt:before{content:"\f225"}.fa-venus-double:before{content:"\f226"}.fa-mars-double:before{content:"\f227"}.fa-venus-mars:before{content:"\f228"}.fa-mars-stroke:before{content:"\f229"}.fa-mars-stroke-v:before{content:"\f22a"}.fa-mars-stroke-h:before{content:"\f22b"}.fa-neuter:before{content:"\f22c"}.fa-genderless:before{content:"\f22d"}.fa-facebook-official:before{content:"\f230"}.fa-pinterest-p:before{content:"\f231"}.fa-whatsapp:before{content:"\f232"}.fa-server:before{content:"\f233"}.fa-user-plus:before{content:"\f234"}.fa-user-times:before{content:"\f235"}.fa-bed:before,.fa-hotel:before{content:"\f236"}.fa-viacoin:before{content:"\f237"}.fa-train:before{content:"\f238"}.fa-subway:before{content:"\f239"}.fa-medium:before{content:"\f23a"}.fa-y-combinator:before,.fa-yc:before{content:"\f23b"}.fa-optin-monster:before{content:"\f23c"}.fa-opencart:before{content:"\f23d"}.fa-expeditedssl:before{content:"\f23e"}.fa-battery-4:before,.fa-battery-full:before,.fa-battery:before{content:"\f240"}.fa-battery-3:before,.fa-battery-three-quarters:before{content:"\f241"}.fa-battery-2:before,.fa-battery-half:before{content:"\f242"}.fa-battery-1:before,.fa-battery-quarter:before{content:"\f243"}.fa-battery-0:before,.fa-battery-empty:before{content:"\f244"}.fa-mouse-pointer:before{content:"\f245"}.fa-i-cursor:before{content:"\f246"}.fa-object-group:before{content:"\f247"}.fa-object-ungroup:before{content:"\f248"}.fa-sticky-note:before{content:"\f249"}.fa-sticky-note-o:before{content:"\f24a"}.fa-cc-jcb:before{content:"\f24b"}.fa-cc-diners-club:before{content:"\f24c"}.fa-clone:before{content:"\f24d"}.fa-balance-scale:before{content:"\f24e"}.fa-hourglass-o:before{content:"\f250"}.fa-hourglass-1:before,.fa-hourglass-start:before{content:"\f251"}.fa-hourglass-2:before,.fa-hourglass-half:before{content:"\f252"}.fa-hourglass-3:before,.fa-hourglass-end:before{content:"\f253"}.fa-hourglass:before{content:"\f254"}.fa-hand-grab-o:before,.fa-hand-rock-o:before{content:"\f255"}.fa-hand-paper-o:before,.fa-hand-stop-o:before{content:"\f256"}.fa-hand-scissors-o:before{content:"\f257"}.fa-hand-lizard-o:before{content:"\f258"}.fa-hand-spock-o:before{content:"\f259"}.fa-hand-pointer-o:before{content:"\f25a"}.fa-hand-peace-o:before{content:"\f25b"}.fa-trademark:before{content:"\f25c"}.fa-registered:before{content:"\f25d"}.fa-creative-commons:before{content:"\f25e"}.fa-gg:before{content:"\f260"}.fa-gg-circle:before{content:"\f261"}.fa-tripadvisor:before{content:"\f262"}.fa-odnoklassniki:before{content:"\f263"}.fa-odnoklassniki-square:before{content:"\f264"}.fa-get-pocket:before{content:"\f265"}.fa-wikipedia-w:before{content:"\f266"}.fa-safari:before{content:"\f267"}.fa-chrome:before{content:"\f268"}.fa-firefox:before{content:"\f269"}.fa-opera:before{content:"\f26a"}.fa-internet-explorer:before{content:"\f26b"}.fa-television:before,.fa-tv:before{content:"\f26c"}.fa-contao:before{content:"\f26d"}.fa-500px:before{content:"\f26e"}.fa-amazon:before{content:"\f270"}.fa-calendar-plus-o:before{content:"\f271"}.fa-calendar-minus-o:before{content:"\f272"}.fa-calendar-times-o:before{content:"\f273"}.fa-calendar-check-o:before{content:"\f274"}.fa-industry:before{content:"\f275"}.fa-map-pin:before{content:"\f276"}.fa-map-signs:before{content:"\f277"}.fa-map-o:before{content:"\f278"}.fa-map:before{content:"\f279"}.fa-commenting:before{content:"\f27a"}.fa-commenting-o:before{content:"\f27b"}.fa-houzz:before{content:"\f27c"}.fa-vimeo:before{content:"\f27d"}.fa-black-tie:before{content:"\f27e"}.fa-fonticons:before{content:"\f280"}.fa-reddit-alien:before{content:"\f281"}.fa-edge:before{content:"\f282"}.fa-credit-card-alt:before{content:"\f283"}.fa-codiepie:before{content:"\f284"}.fa-modx:before{content:"\f285"}.fa-fort-awesome:before{content:"\f286"}.fa-usb:before{content:"\f287"}.fa-product-hunt:before{content:"\f288"}.fa-mixcloud:before{content:"\f289"}.fa-scribd:before{content:"\f28a"}.fa-pause-circle:before{content:"\f28b"}.fa-pause-circle-o:before{content:"\f28c"}.fa-stop-circle:before{content:"\f28d"}.fa-stop-circle-o:before{content:"\f28e"}.fa-shopping-bag:before{content:"\f290"}.fa-shopping-basket:before{content:"\f291"}.fa-hashtag:before{content:"\f292"}.fa-bluetooth:before{content:"\f293"}.fa-bluetooth-b:before{content:"\f294"}.fa-percent:before{content:"\f295"}.fa-gitlab:before{content:"\f296"}.fa-wpbeginner:before{content:"\f297"}.fa-wpforms:before{content:"\f298"}.fa-envira:before{content:"\f299"}.fa-universal-access:before{content:"\f29a"}.fa-wheelchair-alt:before{content:"\f29b"}.fa-question-circle-o:before{content:"\f29c"}.fa-blind:before{content:"\f29d"}.fa-audio-description:before{content:"\f29e"}.fa-volume-control-phone:before{content:"\f2a0"}.fa-braille:before{content:"\f2a1"}.fa-assistive-listening-systems:before{content:"\f2a2"}.fa-american-sign-language-interpreting:before,.fa-asl-interpreting:before{content:"\f2a3"}.fa-deaf:before,.fa-deafness:before,.fa-hard-of-hearing:before{content:"\f2a4"}.fa-glide:before{content:"\f2a5"}.fa-glide-g:before{content:"\f2a6"}.fa-sign-language:before,.fa-signing:before{content:"\f2a7"}.fa-low-vision:before{content:"\f2a8"}.fa-viadeo:before{content:"\f2a9"}.fa-viadeo-square:before{content:"\f2aa"}.fa-snapchat:before{content:"\f2ab"}.fa-snapchat-ghost:before{content:"\f2ac"}.fa-snapchat-square:before{content:"\f2ad"}.fa-pied-piper:before{content:"\f2ae"}.fa-first-order:before{content:"\f2b0"}.fa-yoast:before{content:"\f2b1"}.fa-themeisle:before{content:"\f2b2"}.fa-google-plus-circle:before,.fa-google-plus-official:before{content:"\f2b3"}.fa-fa:before,.fa-font-awesome:before{content:"\f2b4"}.fa-handshake-o:before{content:"\f2b5"}.fa-envelope-open:before{content:"\f2b6"}.fa-envelope-open-o:before{content:"\f2b7"}.fa-linode:before{content:"\f2b8"}.fa-address-book:before{content:"\f2b9"}.fa-address-book-o:before{content:"\f2ba"}.fa-address-card:before,.fa-vcard:before{content:"\f2bb"}.fa-address-card-o:before,.fa-vcard-o:before{content:"\f2bc"}.fa-user-circle:before{content:"\f2bd"}.fa-user-circle-o:before{content:"\f2be"}.fa-user-o:before{content:"\f2c0"}.fa-id-badge:before{content:"\f2c1"}.fa-drivers-license:before,.fa-id-card:before{content:"\f2c2"}.fa-drivers-license-o:before,.fa-id-card-o:before{content:"\f2c3"}.fa-quora:before{content:"\f2c4"}.fa-free-code-camp:before{content:"\f2c5"}.fa-telegram:before{content:"\f2c6"}.fa-thermometer-4:before,.fa-thermometer-full:before,.fa-thermometer:before{content:"\f2c7"}.fa-thermometer-3:before,.fa-thermometer-three-quarters:before{content:"\f2c8"}.fa-thermometer-2:before,.fa-thermometer-half:before{content:"\f2c9"}.fa-thermometer-1:before,.fa-thermometer-quarter:before{content:"\f2ca"}.fa-thermometer-0:before,.fa-thermometer-empty:before{content:"\f2cb"}.fa-shower:before{content:"\f2cc"}.fa-bath:before,.fa-bathtub:before,.fa-s15:before{content:"\f2cd"}.fa-podcast:before{content:"\f2ce"}.fa-window-maximize:before{content:"\f2d0"}.fa-window-minimize:before{content:"\f2d1"}.fa-window-restore:before{content:"\f2d2"}.fa-times-rectangle:before,.fa-window-close:before{content:"\f2d3"}.fa-times-rectangle-o:before,.fa-window-close-o:before{content:"\f2d4"}.fa-bandcamp:before{content:"\f2d5"}.fa-grav:before{content:"\f2d6"}.fa-etsy:before{content:"\f2d7"}.fa-imdb:before{content:"\f2d8"}.fa-ravelry:before{content:"\f2d9"}.fa-eercast:before{content:"\f2da"}.fa-microchip:before{content:"\f2db"}.fa-snowflake-o:before{content:"\f2dc"}.fa-superpowers:before{content:"\f2dd"}.fa-wpexplorer:before{content:"\f2de"}.fa-meetup:before{content:"\f2e0"}.sr-only{clip:rect(0,0,0,0);border:0;height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px}.sr-only-focusable:active,.sr-only-focusable:focus{clip:auto;height:auto;margin:0;overflow:visible;position:static;width:auto}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/static/media/KaTeX_AMS-Regular.73ea273a72f4aca30ca5.woff2) format("woff2"),url(/static/media/KaTeX_AMS-Regular.d562e886c52f12660a41.woff) format("woff"),url(/static/media/KaTeX_AMS-Regular.853be92419a6c3766b9a.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/static/media/KaTeX_Caligraphic-Bold.a1abf90dfd72792a577a.woff2) format("woff2"),url(/static/media/KaTeX_Caligraphic-Bold.d757c535a2e5902f1325.woff) format("woff"),url(/static/media/KaTeX_Caligraphic-Bold.7489a2fbfb9bfe704420.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(/static/media/KaTeX_Caligraphic-Regular.d6484fce1ef428d5bd94.woff2) format("woff2"),url(/static/media/KaTeX_Caligraphic-Regular.db074fa22cf224af93d7.woff) format("woff"),url(/static/media/KaTeX_Caligraphic-Regular.7e873d3833eb108a0758.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(/static/media/KaTeX_Fraktur-Bold.931d67ea207ab37ee693.woff2) format("woff2"),url(/static/media/KaTeX_Fraktur-Bold.354501bac435c3264834.woff) format("woff"),url(/static/media/KaTeX_Fraktur-Bold.4c761b3711973ab04edf.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(/static/media/KaTeX_Fraktur-Regular.172d3529b26f8cedef6b.woff2) format("woff2"),url(/static/media/KaTeX_Fraktur-Regular.6fdf0ac577be0ba82a4c.woff) format("woff"),url(/static/media/KaTeX_Fraktur-Regular.ed305b5434865e06ffde.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(/static/media/KaTeX_Main-Bold.39890742bc957b368704.woff2) format("woff2"),url(/static/media/KaTeX_Main-Bold.0c3b8929d377c0e9b2f3.woff) format("woff"),url(/static/media/KaTeX_Main-Bold.8169508bf58f8bd92ad8.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(/static/media/KaTeX_Main-BoldItalic.20f389c4120be058d80a.woff2) format("woff2"),url(/static/media/KaTeX_Main-BoldItalic.428978dc7837d46de091.woff) format("woff"),url(/static/media/KaTeX_Main-BoldItalic.828abcb200061cffbaae.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(/static/media/KaTeX_Main-Italic.fe2176f79edaa716e621.woff2) format("woff2"),url(/static/media/KaTeX_Main-Italic.fd947498bc16392e76c2.woff) format("woff"),url(/static/media/KaTeX_Main-Italic.fa675e5e4bec9eb250b6.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(/static/media/KaTeX_Main-Regular.f650f111a3b890d116f1.woff2) format("woff2"),url(/static/media/KaTeX_Main-Regular.4f35fbcc9ee8614c2bcc.woff) format("woff"),url(/static/media/KaTeX_Main-Regular.9eba1d77abcf2aa6e94e.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(/static/media/KaTeX_Math-BoldItalic.dcbcbd93bac0470b462d.woff2) format("woff2"),url(/static/media/KaTeX_Math-BoldItalic.3f07ed67f06c720120ce.woff) format("woff"),url(/static/media/KaTeX_Math-BoldItalic.bf2d440b3a42ea78a998.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(/static/media/KaTeX_Math-Italic.6d3d25f4820d0da8f01f.woff2) format("woff2"),url(/static/media/KaTeX_Math-Italic.96759856b4e70f3a8338.woff) format("woff"),url(/static/media/KaTeX_Math-Italic.8a5f936332e8028c7278.ttf) format("truetype")}@font-face{font-display:block;font-family:"KaTeX_SansSerif";font-style:normal;font-weight:700;src:url(/static/media/KaTeX_SansSerif-Bold.95591a929f0d32aa282a.woff2) format("woff2"),url(/static/media/KaTeX_SansSerif-Bold.b9cd458ac6d5889ff9c3.woff) format("woff"),url(/static/media/KaTeX_SansSerif-Bold.5b49f4993ae22d7975b4.ttf) format("truetype")}@font-face{font-display:block;font-family:"KaTeX_SansSerif";font-style:italic;font-weight:400;src:url(/static/media/KaTeX_SansSerif-Italic.7d393d382f3e7fb1c637.woff2) format("woff2"),url(/static/media/KaTeX_SansSerif-Italic.8d593cfaa96238d5e2f8.woff) format("woff"),url(/static/media/KaTeX_SansSerif-Italic.b257a18c016f37ee4543.ttf) format("truetype")}@font-face{font-display:block;font-family:"KaTeX_SansSerif";font-style:normal;font-weight:400;src:url(/static/media/KaTeX_SansSerif-Regular.cd5e231e0cc53b2cb2c0.woff2) format("woff2"),url(/static/media/KaTeX_SansSerif-Regular.02271ec5cb9f5b4588ac.woff) format("woff"),url(/static/media/KaTeX_SansSerif-Regular.2f7bc363fc5424ebda59.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(/static/media/KaTeX_Script-Regular.c81d1b2a4b75d3eded60.woff2) format("woff2"),url(/static/media/KaTeX_Script-Regular.073b3402d036714b4370.woff) format("woff"),url(/static/media/KaTeX_Script-Regular.fc9ba5249878cd8f8d88.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(/static/media/KaTeX_Size1-Regular.6eec866c69313624be60.woff2) format("woff2"),url(/static/media/KaTeX_Size1-Regular.0108e89c9003e8c14ea3.woff) format("woff"),url(/static/media/KaTeX_Size1-Regular.6de7d4b539221a49e9e2.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(/static/media/KaTeX_Size2-Regular.2960900c4f271311eb36.woff2) format("woff2"),url(/static/media/KaTeX_Size2-Regular.3a99e70aee4076660d38.woff) format("woff"),url(/static/media/KaTeX_Size2-Regular.57f5c1837853986ea1db.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(/static/media/KaTeX_Size3-Regular.e1951519f6f0596f7356.woff2) format("woff2"),url(/static/media/KaTeX_Size3-Regular.7947224e8a9914fa332b.woff) format("woff"),url(/static/media/KaTeX_Size3-Regular.8d6b6822586eea3d3b20.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(/static/media/KaTeX_Size4-Regular.e418bf257af1052628d8.woff2) format("woff2"),url(/static/media/KaTeX_Size4-Regular.aeffd8025cba3647f1a6.woff) format("woff"),url(/static/media/KaTeX_Size4-Regular.4ad7c7e8bb8d10a34bb7.ttf) format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(/static/media/KaTeX_Typewriter-Regular.c295e7f71970f03c0549.woff2) format("woff2"),url(/static/media/KaTeX_Typewriter-Regular.4c6b94fd1d07f8beff7c.woff) format("woff"),url(/static/media/KaTeX_Typewriter-Regular.c5c02d763c89380dcb4e.ttf) format("truetype")}.katex{font:normal 1.21em KaTeX_Main,Times New Roman,serif;line-height:1.2;position:relative;text-indent:0;text-rendering:auto}.katex *{-ms-high-contrast-adjust:none!important;border-color:currentColor}.katex .katex-version:after{content:"0.16.45"}.katex .katex-mathml{clip:rect(1px,1px,1px,1px);border:0;height:1px;overflow:hidden;padding:0;position:absolute;width:1px}.katex .katex-html>.newline{display:block}.katex .base{position:relative;white-space:nowrap;width:-webkit-min-content;width:min-content}.katex .base,.katex .strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;display:inline-table;table-layout:fixed}.katex .vlist-r{display:table-row}.katex .vlist{display:table-cell;position:relative;vertical-align:bottom}.katex .vlist>span{display:block;height:0;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{overflow:hidden;width:0}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{display:table-cell;font-size:1px;min-width:2px;vertical-align:bottom;width:2px}.katex .vbox{align-items:baseline;display:inline-flex;flex-direction:column}.katex .hbox{width:100%}.katex .hbox,.katex .thinbox{display:inline-flex;flex-direction:row}.katex .thinbox{max-width:0;width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .hdashline,.katex .hline,.katex .mfrac .frac-line,.katex .overline .overline-line,.katex .rule,.katex .underline .underline-line{min-height:1px}.katex .mspace{display:inline-block}.katex .smash{display:inline;line-height:0}.katex .clap,.katex .llap,.katex .rlap{position:relative;width:0}.katex .clap>.inner,.katex .llap>.inner,.katex .rlap>.inner{position:absolute}.katex .clap>.fix,.katex .llap>.fix,.katex .rlap>.fix{display:inline-block}.katex .llap>.inner{right:0}.katex .clap>.inner,.katex .rlap>.inner{left:0}.katex .clap>.inner>span{margin-left:-50%;margin-right:50%}.katex .rule{border:0 solid;display:inline-block;position:relative}.katex .hline,.katex .overline .overline-line,.katex .underline .underline-line{border-bottom-style:solid;display:inline-block;width:100%}.katex .hdashline{border-bottom-style:dashed;display:inline-block;width:100%}.katex .sqrt>.root{margin-left:.2777777778em;margin-right:-.5555555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .sizing.reset-size2.size1{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .sizing.reset-size2.size3{font-size:1.1666666667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .sizing.reset-size2.size4{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .sizing.reset-size2.size6{font-size:1.6666666667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .sizing.reset-size2.size10{font-size:3.4566666667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .sizing.reset-size2.size11{font-size:4.1466666667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .sizing.reset-size3.size1{font-size:.7142857143em}.katex .fontsize-ensurer.reset-size3.size2,.katex .sizing.reset-size3.size2{font-size:.8571428571em}.katex .fontsize-ensurer.reset-size3.size3,.katex .sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .sizing.reset-size3.size4{font-size:1.1428571429em}.katex .fontsize-ensurer.reset-size3.size5,.katex .sizing.reset-size3.size5{font-size:1.2857142857em}.katex .fontsize-ensurer.reset-size3.size6,.katex .sizing.reset-size3.size6{font-size:1.4285714286em}.katex .fontsize-ensurer.reset-size3.size7,.katex .sizing.reset-size3.size7{font-size:1.7142857143em}.katex .fontsize-ensurer.reset-size3.size8,.katex .sizing.reset-size3.size8{font-size:2.0571428571em}.katex .fontsize-ensurer.reset-size3.size9,.katex .sizing.reset-size3.size9{font-size:2.4685714286em}.katex .fontsize-ensurer.reset-size3.size10,.katex .sizing.reset-size3.size10{font-size:2.9628571429em}.katex .fontsize-ensurer.reset-size3.size11,.katex .sizing.reset-size3.size11{font-size:3.5542857143em}.katex .fontsize-ensurer.reset-size4.size1,.katex .sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .sizing.reset-size5.size1{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .sizing.reset-size5.size2{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .sizing.reset-size5.size3{font-size:.7777777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .sizing.reset-size5.size4{font-size:.8888888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .sizing.reset-size5.size6{font-size:1.1111111111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .sizing.reset-size5.size7{font-size:1.3333333333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .sizing.reset-size5.size10{font-size:2.3044444444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .sizing.reset-size5.size11{font-size:2.7644444444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .sizing.reset-size7.size1{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .sizing.reset-size7.size3{font-size:.5833333333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .sizing.reset-size7.size4{font-size:.6666666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .sizing.reset-size7.size6{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .sizing.reset-size7.size10{font-size:1.7283333333em}.katex .fontsize-ensurer.reset-size7.size11,.katex .sizing.reset-size7.size11{font-size:2.0733333333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .sizing.reset-size8.size1{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .sizing.reset-size8.size2{font-size:.4166666667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .sizing.reset-size8.size3{font-size:.4861111111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .sizing.reset-size8.size4{font-size:.5555555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .sizing.reset-size8.size6{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .sizing.reset-size8.size7{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .sizing.reset-size8.size10{font-size:1.4402777778em}.katex .fontsize-ensurer.reset-size8.size11,.katex .sizing.reset-size8.size11{font-size:1.7277777778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .sizing.reset-size9.size1{font-size:.2893518519em}.katex .fontsize-ensurer.reset-size9.size2,.katex .sizing.reset-size9.size2{font-size:.3472222222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .sizing.reset-size9.size3{font-size:.4050925926em}.katex .fontsize-ensurer.reset-size9.size4,.katex .sizing.reset-size9.size4{font-size:.462962963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .sizing.reset-size9.size5{font-size:.5208333333em}.katex .fontsize-ensurer.reset-size9.size6,.katex .sizing.reset-size9.size6{font-size:.5787037037em}.katex .fontsize-ensurer.reset-size9.size7,.katex .sizing.reset-size9.size7{font-size:.6944444444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .sizing.reset-size9.size8{font-size:.8333333333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .sizing.reset-size9.size10{font-size:1.2002314815em}.katex .fontsize-ensurer.reset-size9.size11,.katex .sizing.reset-size9.size11{font-size:1.4398148148em}.katex .fontsize-ensurer.reset-size10.size1,.katex .sizing.reset-size10.size1{font-size:.2410800386em}.katex .fontsize-ensurer.reset-size10.size2,.katex .sizing.reset-size10.size2{font-size:.2892960463em}.katex .fontsize-ensurer.reset-size10.size3,.katex .sizing.reset-size10.size3{font-size:.337512054em}.katex .fontsize-ensurer.reset-size10.size4,.katex .sizing.reset-size10.size4{font-size:.3857280617em}.katex .fontsize-ensurer.reset-size10.size5,.katex .sizing.reset-size10.size5{font-size:.4339440694em}.katex .fontsize-ensurer.reset-size10.size6,.katex .sizing.reset-size10.size6{font-size:.4821600771em}.katex .fontsize-ensurer.reset-size10.size7,.katex .sizing.reset-size10.size7{font-size:.5785920926em}.katex .fontsize-ensurer.reset-size10.size8,.katex .sizing.reset-size10.size8{font-size:.6943105111em}.katex .fontsize-ensurer.reset-size10.size9,.katex .sizing.reset-size10.size9{font-size:.8331726133em}.katex .fontsize-ensurer.reset-size10.size10,.katex .sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .sizing.reset-size10.size11{font-size:1.1996142719em}.katex .fontsize-ensurer.reset-size11.size1,.katex .sizing.reset-size11.size1{font-size:.2009646302em}.katex .fontsize-ensurer.reset-size11.size2,.katex .sizing.reset-size11.size2{font-size:.2411575563em}.katex .fontsize-ensurer.reset-size11.size3,.katex .sizing.reset-size11.size3{font-size:.2813504823em}.katex .fontsize-ensurer.reset-size11.size4,.katex .sizing.reset-size11.size4{font-size:.3215434084em}.katex .fontsize-ensurer.reset-size11.size5,.katex .sizing.reset-size11.size5{font-size:.3617363344em}.katex .fontsize-ensurer.reset-size11.size6,.katex .sizing.reset-size11.size6{font-size:.4019292605em}.katex .fontsize-ensurer.reset-size11.size7,.katex .sizing.reset-size11.size7{font-size:.4823151125em}.katex .fontsize-ensurer.reset-size11.size8,.katex .sizing.reset-size11.size8{font-size:.578778135em}.katex .fontsize-ensurer.reset-size11.size9,.katex .sizing.reset-size11.size9{font-size:.6945337621em}.katex .fontsize-ensurer.reset-size11.size10,.katex .sizing.reset-size11.size10{font-size:.8336012862em}.katex .fontsize-ensurer.reset-size11.size11,.katex .sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{display:inline-block;width:.12em}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .accent .accent-body{position:relative}.katex .accent .accent-body:not(.accent-full){width:0}.katex .overlay{display:block}.katex .mtable .vertical-separator{display:inline-block;min-width:1px}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;display:block;height:inherit;position:absolute;width:100%}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;max-height:none;max-width:none;min-height:0;min-width:0}.katex .stretchy{display:block;overflow:hidden;position:relative;width:100%}.katex .stretchy:after,.katex .stretchy:before{content:""}.katex .hide-tail{overflow:hidden;position:relative;width:100%}.katex .halfarrow-left{left:0;overflow:hidden;position:absolute;width:50.2%}.katex .halfarrow-right{overflow:hidden;position:absolute;right:0;width:50.2%}.katex .brace-left{left:0;overflow:hidden;position:absolute;width:25.1%}.katex .brace-center{left:25%;overflow:hidden;position:absolute;width:50%}.katex .brace-right{overflow:hidden;position:absolute;right:0;width:25.1%}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{border:.04em solid;box-sizing:border-box}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{border-right:.049em solid;border-top:.049em solid;box-sizing:border-box;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{display:inline-block;position:absolute;right:calc(50% + .3em);text-align:left}.katex .cd-label-right{display:inline-block;left:calc(50% + .3em);position:absolute;text-align:right}.katex-display{display:block;margin:1em 0;text-align:center}.katex-display>.katex{display:block;text-align:center;white-space:nowrap}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}.katex-display.fleqn>.katex{padding-left:2em;text-align:left}body{counter-reset:katexEqnNo mmlEqnNo}:root{--shadow-k:1;--sat-navy:#2e6be6;--sat-blue:#2e6be6;--sat-light-blue:#8ab8ff24;--sat-hover-blue:#2558c4;--bg:#1a2332;--surface:#263248;--surface-hover:#2c3950;--surface-muted:#2f3c55;--border:#3f4e69;--border-light:#344259;--text:#f0f4fa;--text-light:#98a6bb;--success:#178a4b;--success-bg:#4fd39b24;--error:#d83b3b;--error-bg:#ff8f8f24;--warning:#b96f08;--warning-bg:#f5c45124;--sat-navy-text:#b0cfff;--sat-blue-text:#8ab8ff;--success-text:#4fd39b;--error-text:#ff8f8f;--warning-text:#f5c451;--radius-sm:6px;--radius:10px;--radius-lg:14px;--radius-xl:20px;--shadow-sm:0 1px 3px #00000047,0 1px 2px #0000002e;--shadow:0 4px 10px #00000042,0 2px 4px #0000002e;--shadow-lg:0 12px 28px #00000052,0 4px 8px #0003;--font-body:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;--font-mono:"Courier New",Courier,monospace;--nav-bg:#263248eb;--nav-text:#b4c0d2;--nav-text-hover:#f0f4fa;--nav-text-active:#fff;--nav-hover-bg:#ffffff14;--nav-active-bg:#ffffff21;--nav-border:#ffffff1f;--nav-divider:#ffffff1f;--nav-prof-bg:#8ab8ff24;--nav-prof-border:#8ab8ff57;--nav-prof-hover:#8ab8ff3d;--nav-prof-icon:#8ab8ff;--bg-main:#1a2332;--bg-section:#1f2939;--bg-card:#263248;--bg-card-header:#2f3c55;--border-dark:#3f4e69;--text-main:#f0f4fa;--text-main-light:#e6ebf3;--text-main-lighter:#dbe2ec;--text-muted:#bcc7d7;--text-secondary:var(--text-muted);--text-subtle:#98a6bb;--text-dim:#93a1b7;--accent-primary:#2e6be6;--accent-hover:#3f7cf0;--accent-active:#2558c4;--accent-light:#86b4ff;--text-bright:#fff;--accent-text:#8ab8ff;--accent-active-text:#b0cfff;--fixed-50:#f8fafc;--fixed-100:#f1f5f9;--fixed-200:#e2e8f0;--fixed-300:#cbd5e1;--fixed-400:#94a3b8;--fixed-500:#64748b;--fixed-700:#334155;--fixed-800:#1e293b;--fixed-900:#0f172a;--glass-900:38,50,72;--glass-800:47,60,85;--hairline:255,255,255;--surface-band:#1f2939;--surface-open:#2c3950;--surface-deep:#1a2332;--surface-soft:#263248;--surface-inset:#1f2939;--surface-raised:#2f3c55;--surface-input:#1f2939;--fg-emerald-400:#4fd39b;--fg-emerald-300:#7be3b6;--fg-green-300:#86efac;--fg-green-200:#bbf7d0;--fg-red-400:#ff8f8f;--fg-red-300:#ffb0b0;--fg-blue-400:#8ab8ff;--fg-blue-300:#b0cfff;--fg-blue-200:#cfe0ff;--fg-sky-400:#7cc8f5;--fg-amber-400:#f5c451;--fg-amber-300:#f8d57f;--fg-yellow-400:#facc15;--fg-yellow-300:#fde047;--fg-purple-400:#c084fc;--fg-violet-400:#8ab8ff;--fg-violet-300:#b0cfff;--fg-indigo-400:#8ab8ff;--fg-indigo-300:#b0cfff;--cp-window:#263248;--cp-header:#2f3c55;--cp-panel:#33415c;--cp-inset:#1f2939;--cp-line:#ffffff1f;--cp-hover:#ffffff17;--cp-text:#f0f4fa;--cp-text-soft:#d3dbe7;--cp-muted:#a7b4c8;--cp-link:#8ab8ff;--cp-chip:#8ab8ff21;--cp-chip-line:#8ab8ff4d;--cp-chip-text:#c4daff;--cp-code:#00000038;--cp-shadow:#00000073;color-scheme:dark}:root[data-theme=light]{--shadow-k:0.3;--nav-bg:#fffffff0;--nav-text:#4b586c;--nav-text-hover:#121b2b;--nav-text-active:#121b2b;--nav-hover-bg:#121b2b0f;--nav-active-bg:#121b2b1a;--nav-border:#121b2b1f;--nav-divider:#121b2b1f;--nav-prof-bg:#1f5fd81a;--nav-prof-border:#1f5fd84d;--nav-prof-hover:#1f5fd82e;--nav-prof-icon:#1f5fd8;--bg-main:#e8edf4;--bg-section:#f1f4f8;--bg-card:#fff;--bg-card-header:#edf1f6;--border-dark:#c5cfdc;--text-main:#121b2b;--text-main-light:#1e2a3c;--text-main-lighter:#2f3c50;--text-muted:#435065;--text-subtle:#566379;--text-dim:#5f6c82;--accent-primary:#1f5fd8;--accent-hover:#1a52bd;--accent-active:#164599;--accent-light:#1f5fd8;--text-bright:#121b2b;--sat-navy:#1f5fd8;--sat-light-blue:#e6efff;--bg:#e8edf4;--surface:#fff;--surface-hover:#f4f6fa;--surface-muted:#edf1f6;--border:#c5cfdc;--border-light:#d6dde7;--text:#121b2b;--success-bg:#e7f6ec;--error-bg:#fdecec;--warning-bg:#fdf3df;--sat-navy-text:#173f86;--sat-blue-text:#1a55c4;--success-text:#15803d;--error-text:#c92a2a;--warning-text:#b45309;--accent-text:#1a55c4;--accent-active-text:#164599;--text-light:#566379;--glass-900:255,255,255;--glass-800:237,241,246;--hairline:18,27,43;--surface-band:#f1f4f8;--surface-open:#fff;--surface-deep:#e8edf4;--surface-soft:#f4f6fa;--surface-inset:#f1f4f8;--surface-raised:#e6ebf2;--surface-input:#fff;--fg-emerald-400:#047857;--fg-emerald-300:#047857;--fg-green-300:#047857;--fg-green-200:#047857;--fg-red-400:#b91c1c;--fg-red-300:#b91c1c;--fg-blue-400:#1a55c4;--fg-blue-300:#1a55c4;--fg-blue-200:#1a55c4;--fg-sky-400:#0369a1;--fg-amber-400:#b45309;--fg-amber-300:#b45309;--fg-yellow-400:#a16207;--fg-yellow-300:#a16207;--fg-purple-400:#7e22ce;--fg-violet-400:#1a55c4;--fg-violet-300:#1a55c4;--fg-indigo-400:#1a55c4;--fg-indigo-300:#1a55c4;--sat-blue:#1f5fd8;--sat-hover-blue:#1a52bd;--success:#15803d;--error:#c92a2a;--warning:#b45309;--shadow-sm:0 1px 3px #121b2b1a,0 1px 2px #121b2b0f;--shadow:0 4px 10px #121b2b17,0 2px 4px #121b2b0f;--shadow-lg:0 12px 28px #121b2b21,0 4px 8px #121b2b12;--cp-window:#fff;--cp-header:#f1f4f8;--cp-panel:#edf1f6;--cp-inset:#fff;--cp-line:#121b2b24;--cp-hover:#121b2b0f;--cp-text:#121b2b;--cp-text-soft:#2f3c50;--cp-muted:#566379;--cp-link:#1a55c4;--cp-chip:#e6efff;--cp-chip-line:#bdd2f7;--cp-chip-text:#1a55c4;--cp-code:#e3e8f0;--cp-shadow:#121b2b38;color-scheme:light}:root[data-theme=dark] .paper-surface,[data-theme=dark] .bluebook-question-main-area,[data-theme=dark] div.question-html-clean:not(.copilot-msg-content),[data-theme=dark] p.question-html-clean{--sat-navy:#1b3a6b;--sat-light-blue:#eff6ff;--bg:#f1f5f9;--surface:#fff;--surface-hover:#f8fafc;--surface-muted:#f1f5f9;--border:#cbd5e1;--border-light:#e2e8f0;--text:#0f172a;--success-bg:#f0fdf4;--error-bg:#fef2f2;--warning-bg:#fffbeb;--sat-navy-text:#1b3a6b;--sat-blue-text:#2563eb;--success-text:#16a34a;--error-text:#dc2626;--warning-text:#d97706;--accent-text:#1a55c4;--accent-active-text:#164599;--text-main:#0f172a;--text-main-light:#1e293b;--text-main-lighter:#334155;--text-muted:#475569;--text-subtle:#64748b;--text-dim:#64748b;--text-light:#64748b;--text-bright:#0f172a;--bg-main:#fff;--bg-section:#f8fafc;--bg-card:#fff;--bg-card-header:#f1f5f9;--border-dark:#e2e8f0;color-scheme:light}:root[data-theme=dark] div.question-html-clean:not(.copilot-msg-content),:root[data-theme=dark] p.question-html-clean{background:#fff;border-radius:8px;color:#0f172a;padding:10px 12px}:root[data-theme=dark] .bluebook-question-main-area div.question-html-clean,:root[data-theme=dark] .bluebook-question-main-area p.question-html-clean{background:#0000;padding:0}*,:after,:before{box-sizing:border-box}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#1a2332;background-color:var(--bg);color:#f0f4fa;color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-family:var(--font-body);font-size:16px;line-height:1.6}body,p{margin:0}p{padding:0}a{color:inherit;text-decoration:none}img{display:block;height:auto;max-width:100%}code{font-family:Courier New,Courier,monospace;font-family:var(--font-mono)}.katex{font-size:1.05em;line-height:1.5}.katex-display{margin:.8em 0;overflow-x:auto;overflow-y:hidden}.katex .mord.accent>.vlist-t>.vlist-r>.vlist svg,.katex .mover>span>svg,.katex .overrightarrow svg{stroke:currentColor;min-width:1.35em;overflow:visible}.katex .mover>span>svg path,.katex .overrightarrow svg path{stroke-width:1.2px}.katex .overrightarrow{display:inline-block;padding-top:2px}:root[data-theme=dark] .contact-mobile-btn,:root[data-theme=dark] .not-login-btn,:root[data-theme=dark] .res-email-btn,:root[data-theme=dark] .reset-password-btn,:root[data-theme=dark] .trial-submit-btn,:root[data-theme=dark] .user-btn{background:#2e6be6;background:var(--accent-primary);color:#fff}:root[data-theme=dark] .assignment-btn.resume,:root[data-theme=dark] .assignment-btn.resume-yellow,:root[data-theme=dark] .trial-feature-icon{color:#0f172a}:root[data-theme] .assignment-btn.completed,:root[data-theme] .btn-download-combined,:root[data-theme] .btn-save-session-glow,:root[data-theme] .mark-complete-btn-student,:root[data-theme] .pdf-footer-btn-primary,:root[data-theme] .student-timeline-card.completed .student-node-circle{background:linear-gradient(135deg,#047857,#065f46)}:root[data-theme=dark] .whatsapp-share-btn{background:#128c7e}:root[data-theme=dark] .pdf-footer-btn-amber{background:linear-gradient(135deg,#b45309,#92400e)}:root[data-theme=dark] .remove-group-btn,:root[data-theme=dark] .remove-student-btn{background:#dc2626}:root[data-theme=dark] .update-grade .button:hover{background:#2558c4;background:var(--accent-active)}:root[data-theme=dark] .btn-download{color:#fff}:root[data-theme=dark] .hwc-question-img,:root[data-theme=dark] .question-img img,:root[data-theme=dark] .sr-question-img img,:root[data-theme=dark] img[alt="Chosen answer"],:root[data-theme=dark] img[alt="Correct graph"],:root[data-theme=dark] img[alt="Explanation visual"],:root[data-theme=dark] img[alt="Graph answer choice"],:root[data-theme=dark] img[alt="Pocket question"],:root[data-theme=dark] img[alt="Question Diagram"],:root[data-theme=dark] img[alt="Question visual aid"],:root[data-theme=dark] img[alt="Zoomed Diagram"],:root[data-theme=dark] img[alt=Question],:root[data-theme=dark] img[alt^="Question "],:root[data-theme=dark] img[src*=cloudinary],:root[data-theme=dark] img[src*=uploads]{background:#fff;border-radius:6px}:root[data-theme=dark] .whiteboard{background:#fffffff2}:where(:root[data-theme=dark]) input:not([type=checkbox],[type=radio],[type=range],[type=color],[type=file]),:where(:root[data-theme=dark]) select,:where(:root[data-theme=dark]) textarea{background-color:#1e293b;border-color:#334155;color:#f8fafc}:where(:root[data-theme=dark] .bluebook-question-main-area,:root[data-theme=dark] .paper-surface) input:not([type=checkbox],[type=radio],[type=range],[type=color],[type=file]),:where(:root[data-theme=dark] .bluebook-question-main-area,:root[data-theme=dark] .paper-surface) select,:where(:root[data-theme=dark] .bluebook-question-main-area,:root[data-theme=dark] .paper-surface) textarea{background-color:#fff;color:#0f172a}:root{--bg-bfdbfe:#3b82f638;--bg-d0d0d0:#4f5f7c;--bg-dbeafe:#3b82f638;--bg-dcfce7:#10b98124;--bg-e0e0e0:#3f4e69;--bg-e0e7ff:#3b82f638;--bg-e0f2fe:#3b82f624;--bg-e2e8f0:#3f4e69;--bg-e3f2fd:#3b82f624;--bg-e8f5e9:#2f3c55;--bg-e9ecef:#3f4e69;--bg-ebedee:#2f3c55;--bg-ecfdf5:#10b98124;--bg-eef0f6:#2f3c55;--bg-eff6ff:#3b82f624;--bg-f0f0f0:#2f3c55;--bg-f0f2f5:#1a2332;--bg-f0fdf4:#10b98124;--bg-f1f1f1:#2f3c55;--bg-f1f5f9:#2f3c55;--bg-f3e5f5:#3f4e69;--bg-f3e8ff:#8b5cf638;--bg-f3f4f6:#2f3c55;--bg-f5f3ff:#8b5cf624;--bg-f5f5f5:#2f3c55;--bg-f8f9fa:#2c3950;--bg-f8fafc:#2c3950;--bg-f9f9f9:#2c3950;--bg-f9fafb:#2c3950;--bg-fafafa:#2c3950;--bg-fdfbfb:#2c3950;--bg-fee2e2:#ef444438;--bg-fef2f2:#ef444424;--bg-fef3c7:#f59e0b24;--bg-fef6e4:#f59e0b24;--bg-fefce8:#f59e0b24;--bg-ffe6e6:#ef444438;--bg-ffeaa7:#f59e0b38;--bg-fff1f2:#ef444424;--bg-fff3cd:#f59e0b24;--bg-fff3e0:#f59e0b24;--bg-fff5f5:#ef444424;--bg-fffaf0:#f59e0b24;--bg-fffbeb:#f59e0b24;--bg-ffffff:#263248;--fg-000000:#f0f4fa;--fg-007bff:#8ab8ff;--fg-0284c7:#8ab8ff;--fg-0369a1:#8ab8ff;--fg-065f46:#4fd39b;--fg-0f172a:#f0f4fa;--fg-14532d:#4fd39b;--fg-15803d:#4fd39b;--fg-161616:#f0f4fa;--fg-166534:#4fd39b;--fg-1976d2:#8ab8ff;--fg-1b3a6b:#8ab8ff;--fg-1d4ed8:#8ab8ff;--fg-1e1e2e:#f0f4fa;--fg-1e293b:#f0f4fa;--fg-1e40af:#8ab8ff;--fg-1f2937:#f0f4fa;--fg-212529:#f0f4fa;--fg-2563eb:#8ab8ff;--fg-282727:#f0f4fa;--fg-2980b9:#8ab8ff;--fg-2d3436:#dbe2ec;--fg-333333:#dbe2ec;--fg-334155:#dbe2ec;--fg-374151:#dbe2ec;--fg-383737:#dbe2ec;--fg-388e3c:#98a6bb;--fg-4338ca:#8ab8ff;--fg-444444:#dbe2ec;--fg-475569:#bcc7d7;--fg-555555:#bcc7d7;--fg-565555:#bcc7d7;--fg-5d17eb:#c9bcff;--fg-64748b:#98a6bb;--fg-666666:#98a6bb;--fg-6b7280:#98a6bb;--fg-7c3aed:#c9bcff;--fg-7e22ce:#c9bcff;--fg-7f1d1d:#ff8f8f;--fg-854d0e:#f5c451;--fg-856404:#f5c451;--fg-8b5cf6:#8ab8ff;--fg-92400e:#f5c451;--fg-9333ea:#c9bcff;--fg-991b1b:#ff8f8f;--fg-9c27b0:#c9bcff;--fg-9f1239:#c9bcff;--fg-a16207:#f5c451;--fg-b45309:#f5c451;--fg-b91c1c:#ff8f8f;--fg-be123c:#ff8f8f;--fg-c92a2a:#ff8f8f;--fg-d63031:#ff8f8f;--fg-dc2626:#ff8f8f;--fg-e11d48:#ff8f8f;--fg-e63946:#ff8f8f;--line-0f172a:#4f5f7c;--line-1b3a6b:#3b82f666;--line-1e3a8a:#3b82f666;--line-334155:#3f4e69;--line-86efac:#10b98166;--line-a7f3d0:#10b98166;--line-bae6fd:#3b82f666;--line-bbf7d0:#10b98166;--line-bfdbfe:#3b82f666;--line-cbd5e1:#3f4e69;--line-dcfce7:#10b98166;--line-e0e0e0:#3f4e69;--line-e2e8f0:#344259;--line-e5e7eb:#3f4e69;--line-f0f0f0:#344259;--line-fde047:#f59e0b66;--line-fde68a:#f59e0b66;--line-fecaca:#ef444466;--line-fecdd3:#ef444466;--line-fef08a:#f59e0b66;--line-ffd166:#f59e0b66}:root[data-theme=dark] .bluebook-question-main-area,:root[data-theme=dark] .paper-surface,:root[data-theme=dark] div.question-html-clean:not(.copilot-msg-content),:root[data-theme=dark] p.question-html-clean,:root[data-theme=light]{--bg-bfdbfe:#bfdbfe;--bg-d0d0d0:#d0d0d0;--bg-dbeafe:#dbeafe;--bg-dcfce7:#dcfce7;--bg-e0e0e0:#e0e0e0;--bg-e0e7ff:#e0e7ff;--bg-e0f2fe:#e0f2fe;--bg-e2e8f0:#dde3ec;--bg-e3f2fd:#e3f2fd;--bg-e8f5e9:#e8f5e9;--bg-e9ecef:#dde3ec;--bg-ebedee:#ebedee;--bg-ecfdf5:#ecfdf5;--bg-eef0f6:#edf1f6;--bg-eff6ff:#eff6ff;--bg-f0f0f0:#e9eef4;--bg-f0f2f5:#e8edf4;--bg-f0fdf4:#f0fdf4;--bg-f1f1f1:#edf1f6;--bg-f1f5f9:#edf1f6;--bg-f3e5f5:#f3e5f5;--bg-f3e8ff:#f3e8ff;--bg-f3f4f6:#edf1f6;--bg-f5f3ff:#f5f3ff;--bg-f5f5f5:#edf1f6;--bg-f8f9fa:#f4f6fa;--bg-f8fafc:#f4f6fa;--bg-f9f9f9:#f4f6fa;--bg-f9fafb:#f4f6fa;--bg-fafafa:#f4f6fa;--bg-fdfbfb:#f4f6fa;--bg-fee2e2:#fee2e2;--bg-fef2f2:#fef2f2;--bg-fef3c7:#fef3c7;--bg-fef6e4:#fef6e4;--bg-fefce8:#fefce8;--bg-ffe6e6:#ffe6e6;--bg-ffeaa7:#ffeaa7;--bg-fff1f2:#fff1f2;--bg-fff3cd:#fff3cd;--bg-fff3e0:#fff3e0;--bg-fff5f5:#fff5f5;--bg-fffaf0:#fffaf0;--bg-fffbeb:#fffbeb;--bg-ffffff:#fff;--fg-000000:#000;--fg-007bff:#007bff;--fg-0284c7:#0284c7;--fg-0369a1:#0369a1;--fg-065f46:#065f46;--fg-0f172a:#0f172a;--fg-14532d:#14532d;--fg-15803d:#15803d;--fg-161616:#161616;--fg-166534:#166534;--fg-1976d2:#1976d2;--fg-1b3a6b:#1b3a6b;--fg-1d4ed8:#1d4ed8;--fg-1e1e2e:#1e1e2e;--fg-1e293b:#1e293b;--fg-1e40af:#1e40af;--fg-1f2937:#1f2937;--fg-212529:#212529;--fg-2563eb:#2563eb;--fg-282727:#282727;--fg-2980b9:#2980b9;--fg-2d3436:#2d3436;--fg-333333:#333;--fg-334155:#334155;--fg-374151:#374151;--fg-383737:#383737;--fg-388e3c:#388e3c;--fg-4338ca:#4338ca;--fg-444444:#444;--fg-475569:#475569;--fg-555555:#555;--fg-565555:#565555;--fg-5d17eb:#1a55c4;--fg-64748b:#55637a;--fg-666666:#666;--fg-6b7280:#6b7280;--fg-7c3aed:#7c3aed;--fg-7e22ce:#7e22ce;--fg-7f1d1d:#7f1d1d;--fg-854d0e:#854d0e;--fg-856404:#856404;--fg-8b5cf6:#1a55c4;--fg-92400e:#92400e;--fg-9333ea:#9333ea;--fg-991b1b:#991b1b;--fg-9c27b0:#9c27b0;--fg-9f1239:#9f1239;--fg-a16207:#a16207;--fg-b45309:#b45309;--fg-b91c1c:#b91c1c;--fg-be123c:#be123c;--fg-c92a2a:#c92a2a;--fg-d63031:#d63031;--fg-dc2626:#b91c1c;--fg-e11d48:#e11d48;--fg-e63946:#e63946;--line-0f172a:#0f172a;--line-1b3a6b:#1b3a6b;--line-1e3a8a:#1e3a8a;--line-334155:#334155;--line-86efac:#86efac;--line-a7f3d0:#a7f3d0;--line-bae6fd:#bae6fd;--line-bbf7d0:#bbf7d0;--line-bfdbfe:#bfdbfe;--line-cbd5e1:#c5cfdc;--line-dcfce7:#dcfce7;--line-e0e0e0:#d6dde7;--line-e2e8f0:#d6dde7;--line-e5e7eb:#d6dde7;--line-f0f0f0:#e3e8f0;--line-fde047:#fde047;--line-fde68a:#fde68a;--line-fecaca:#fecaca;--line-fecdd3:#fecdd3;--line-fef08a:#fef08a;--line-ffd166:#ffd166}.mistakes-bank-studio{background-color:var(--surface-deep);box-sizing:border-box;color:var(--text-main);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;min-height:100vh;padding-bottom:60px}.mistakes-studio-header{align-items:center;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);background:rgba(var(--glass-900),.88);border-bottom:1px solid rgba(var(--hairline),.1);display:flex;flex-wrap:wrap;gap:20px;justify-content:space-between;padding:16px 32px;position:-webkit-sticky;position:sticky;top:0;z-index:100}.mistakes-header-left{align-items:center;display:flex;gap:18px}.back-courses-btn{align-items:center;background:rgba(var(--hairline),.06);border:1px solid rgba(var(--hairline),.12);border-radius:8px;color:var(--text-muted);display:inline-flex;font-size:13px;font-weight:600;gap:6px;padding:7px 14px;text-decoration:none;transition:all .2s ease}.back-courses-btn:hover{background:rgba(var(--hairline),.12);color:var(--text-main);transform:translateX(-2px)}.mistakes-header-title{align-items:center;display:flex;gap:12px}.mistakes-header-title h2{color:var(--text-main);font-size:18px;font-weight:800;letter-spacing:-.01em;margin:0}.mistakes-badge-count{background:#ef444426;border:1px solid #ef44444d;border-radius:20px;color:var(--fg-red-300);font-size:12px;font-weight:700;padding:3px 10px}.mistakes-header-right{align-items:center;display:flex;gap:12px}.mistakes-filter-select{background:var(--bg-card-header);border:1px solid var(--border-dark);border-radius:8px;color:var(--text-main-light);cursor:pointer;font-size:13px;font-weight:600;outline:none;padding:8px 14px;transition:border-color .2s ease}.mistakes-filter-select:focus{border-color:var(--accent-hover)}.mistakes-search-box{align-items:center;display:flex;position:relative}.mistakes-search-box svg{left:12px;pointer-events:none;position:absolute}.mistakes-search-box input{background:var(--bg-card-header);border:1px solid var(--border-dark);border-radius:8px;color:var(--text-main);font-size:13px;min-width:240px;outline:none;padding:8px 14px 8px 36px;transition:all .2s ease}.mistakes-search-box input:focus{border-color:var(--accent-hover);box-shadow:0 0 0 3px #2563eb33}.mistakes-search-box input::placeholder{color:var(--text-dim)}.mistakes-main-container{box-sizing:border-box;margin:32px auto 0;max-width:1080px;padding:0 24px}.mistakes-empty-state,.mistakes-loading-state{background:var(--bg-card);border:1px solid rgba(var(--hairline),.08);border-radius:20px;box-shadow:0 10px 30px rgba(0,0,0,calc(var(--shadow-k)*.3));padding:80px 20px;text-align:center}.mistakes-spinner{animation:spin .8s linear infinite;border:3px solid rgba(var(--hairline),.1);border-radius:50%;border-top-color:var(--accent-hover);height:36px;margin:0 auto 16px;width:36px}.mistakes-empty-icon{font-size:40px;margin-bottom:12px}.mistakes-empty-state h3{color:var(--text-main);font-size:20px;font-weight:750;margin:0 0 8px}.mistakes-empty-state p{color:var(--text-subtle);font-size:14px;margin:0 auto 20px;max-width:460px}.mistakes-action-btn{background:var(--accent-hover);border:none;border-radius:8px;color:var(--fixed-50);cursor:pointer;font-size:13.5px;font-weight:650;padding:8px 20px;transition:background .2s ease}.mistakes-action-btn:hover{background:var(--accent-primary)}.mistakes-cards-grid{display:flex;flex-direction:column;gap:28px}.mistake-question-card{background:var(--bg-card);border:1px solid rgba(var(--hairline),.06);border-radius:18px;box-shadow:0 12px 40px rgba(0,0,0,calc(var(--shadow-k)*.4));padding:24px 28px;transition:border-color .2s ease,transform .2s ease}.mistake-question-card:hover{border-color:#60a5fa66;transform:translateY(-2px)}.mistake-card-header{align-items:center;border-bottom:1px solid rgba(var(--hairline),.08);display:flex;justify-content:space-between;margin-bottom:18px;padding-bottom:12px}.mistake-index-pill{background:#2563eb26;border:1px solid #60a5fa40;border-radius:20px;color:var(--accent-light);font-size:13.5px;font-weight:800;padding:4px 12px}.mistake-source-tag{font-size:12.5px;font-weight:600}.mistake-question-body{color:var(--text-main-light);font-size:15px;line-height:1.65;margin-bottom:20px}.mistake-question-text,.mistake-question-text *{color:var(--text-main-light)!important}.mistake-image-wrapper{margin-top:14px}.mistake-image-wrapper img{border:1px solid rgba(var(--hairline),.12);border-radius:10px;cursor:pointer;max-height:320px;max-width:100%;transition:transform .2s ease}.mistake-image-wrapper img:hover{transform:scale(1.01)}.mistake-options-read-only{display:flex;flex-direction:column;gap:10px;margin-bottom:20px}.mistake-option-item{align-items:center;background:var(--surface-soft);border:1px solid rgba(var(--hairline),.08);border-radius:12px;color:var(--text-main-lighter);display:flex;font-size:14.5px;gap:12px;padding:12px 18px;transition:all .2s ease}.mistake-option-item.option-correct{background:#10b9810f;border-color:#10b981;box-shadow:0 4px 15px #10b9811a;color:var(--fg-emerald-400)}.mistake-option-item.option-wrong{background:#ef44440f;border-color:#ef4444;box-shadow:0 4px 15px #ef44441a;color:var(--fg-red-400)}.option-badge{align-items:center;background:rgba(var(--hairline),.08);border-radius:8px;display:flex;flex-shrink:0;font-size:13px;font-weight:800;height:28px;justify-content:center;width:28px}.option-text{flex:1 1}.option-status-tag{border-radius:6px;font-size:11px;font-weight:750;padding:3px 8px}.option-status-tag.correct{background:#10b98140;color:var(--fg-emerald-400)}.option-status-tag.wrong{background:#ef444440;color:var(--fg-red-400)}.mistake-comparison-container{grid-gap:16px;display:grid;gap:16px;grid-template-columns:1fr 1fr;margin-bottom:18px}@media (max-width:640px){.mistake-comparison-container{grid-template-columns:1fr}}.comparison-pill{background:var(--surface-soft);border:1px solid rgba(var(--hairline),.08);border-radius:12px;box-shadow:inset 0 2px 10px rgba(0,0,0,calc(var(--shadow-k)*.2));padding:16px 20px}.comparison-pill.your-answer-box{border-left:4px solid #ef4444}.comparison-pill.correct-answer-box{border-left:4px solid #10b981}.pill-label{align-items:center;color:var(--text-subtle);display:flex;font-size:11.5px;font-weight:750;gap:6px;letter-spacing:.03em;margin-bottom:6px;text-transform:uppercase}.pill-value{font-size:14.5px;font-weight:700;word-break:break-word}.pill-value.wrong{color:var(--fg-red-400)}.pill-value.correct{color:var(--fg-emerald-400)}.mistake-solution-card{background:rgba(var(--glass-800),.6);border:1px solid #60a5fa33;border-radius:12px;padding:16px 20px}.solution-header{align-items:center;color:var(--accent-light);display:flex;font-size:12px;font-weight:750;gap:8px;letter-spacing:.03em;margin-bottom:8px;text-transform:uppercase}.solution-text{color:var(--text-muted);font-size:13.5px;line-height:1.6}.solution-text,.solution-text *{color:var(--text-muted)!important}.mistakes-lightbox-overlay{align-items:center;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#000000d9;display:flex;inset:0;justify-content:center;padding:20px;position:fixed;z-index:10000}.mistakes-lightbox-content{max-height:90vh;max-width:90vw;position:relative}.mistakes-lightbox-content img{border:1px solid #fff3;border-radius:12px;max-height:85vh;max-width:100%}.close-lightbox-btn{background:#ef4444;border:none;border-radius:50%;color:var(--fixed-50);cursor:pointer;font-size:14px;font-weight:700;height:30px;position:absolute;right:-12px;top:-12px;width:30px}.ai-tutor-panel{background:var(--bg-card);border:1px solid var(--border-dark,rgba(var(--hairline),.1));border-radius:12px;box-shadow:0 10px 30px rgba(0,0,0,calc(var(--shadow-k)*.2));margin:32px auto 0;max-width:1100px;padding:24px}.ai-tutor-header{align-items:center;border-bottom:1px solid var(--border-dark,rgba(var(--hairline),.1));display:flex;justify-content:space-between;margin-bottom:16px;padding-bottom:16px}.ai-tutor-header h3{color:var(--text-main);font-size:18px;margin:0}.ai-action-btn{background:var(--accent-primary);border:none;border-radius:8px;color:#fff;cursor:pointer;font-size:14px;font-weight:600;padding:10px 18px;transition:transform .2s,box-shadow .2s}.ai-action-btn:hover{box-shadow:0 4px 15px #3b82f666;transform:translateY(-2px)}.ai-action-btn:disabled{cursor:not-allowed;opacity:.6;transform:none}.generate-test-btn{background:linear-gradient(135deg,#10b981,#059669);display:block;margin-top:16px;width:100%}.generate-test-btn:hover{box-shadow:0 4px 15px #10b98166}.ai-loading{align-items:center;color:var(--text-muted);display:flex;font-size:14px;gap:12px}.ai-error{background:#ef44441a;border-radius:6px;color:var(--error-text);font-size:14px;padding:12px}.ai-result{color:var(--text-main);font-size:15px;line-height:1.6}.ai-weaknesses-list{background:rgba(var(--hairline),.02);background:var(--bg-card-header,rgba(var(--hairline),.02));border-radius:8px;margin-top:16px;padding:12px 16px}.ai-weaknesses-list ul{color:var(--text-muted);margin:8px 0 0;padding-left:20px}.fixed-brand-container{align-items:center;display:flex;left:28px;position:fixed;top:18px;z-index:10000}.modern-brand-mark{align-items:center;background:#0000!important;border:none!important;border-radius:0!important;box-shadow:none!important;display:inline-flex;padding:0!important;text-decoration:none;transition:opacity .2s ease,transform .2s ease}.modern-brand-mark:hover{border:none!important;box-shadow:none!important;opacity:.88;transform:translateY(-.5px)}.sat-school-brand-pill{background:#0000!important;padding:0!important}.sat-school-brand-pill,.sat-school-brand-pill:hover{border:none!important;box-shadow:none!important}.brand-icon-box{align-items:center;background:linear-gradient(135deg,#2563eb40,#6366f126);border:1px solid #60a5fa59;border-radius:50%;display:flex;height:32px;justify-content:center;width:32px}.brand-text-block{align-items:center;display:flex;gap:6px}.brand-title{color:var(--text-main);font-family:Inter,-apple-system,sans-serif;font-size:15px;font-weight:800;letter-spacing:-.02em}.brand-badge-tag{background:#38bdf826;border:1px solid #38bdf84d;border-radius:6px;color:var(--fg-sky-400);font-size:10px;font-weight:800;letter-spacing:.05em;padding:2px 6px}.aceternity-navbar-wrapper{display:flex;justify-content:center;left:0;pointer-events:none;position:fixed;right:0;top:18px;width:100%;z-index:9999}.aceternity-floating-pill{align-items:center;backdrop-filter:blur(24px) saturate(190%);-webkit-backdrop-filter:blur(24px) saturate(190%);background:var(--nav-bg);border:1px solid var(--nav-border);border-radius:100px;box-shadow:0 16px 36px rgba(0,0,0,calc(var(--shadow-k)*.25)),0 0 24px #2563eb1f;box-sizing:border-box;display:flex;padding:5px 6px 5px 12px;pointer-events:auto;transition:transform .38s cubic-bezier(.16,1,.3,1),opacity .32s ease,border-color .2s ease}.aceternity-floating-pill.pill-visible{opacity:1;transform:translateY(0)}.aceternity-floating-pill.pill-hidden{opacity:0;pointer-events:none;transform:translateY(-90px)}.aceternity-floating-pill:hover{border-color:#60a5fa59;box-shadow:0 20px 44px rgba(0,0,0,calc(var(--shadow-k)*.6)),0 0 30px #2563eb33}.unified-nav-links{align-items:center;display:flex;gap:4px}.unified-nav-item{align-items:center;border-radius:50px;color:var(--nav-text);display:inline-flex;font-size:13.5px;font-weight:600;padding:7px 14px;text-decoration:none;transition:all .2s ease;white-space:nowrap}.unified-nav-item:hover{background:var(--nav-hover-bg);color:var(--nav-text-hover)}.unified-nav-item.active{background:var(--nav-active-bg);color:var(--nav-text-active)}.nav-vertical-divider{background:var(--nav-divider);height:20px;margin:0 10px 0 8px;width:1px}.unified-nav-action{align-items:center;display:flex}.unified-profile-dropdown-wrapper{position:relative}.unified-profile-pill{align-items:center;background:var(--nav-prof-bg);border:1px solid var(--nav-prof-border);border-radius:50px;color:var(--nav-text-hover);cursor:pointer;display:flex;gap:8px;padding:5px 12px 5px 6px;text-decoration:none;transition:all .2s ease}.unified-profile-pill.open,.unified-profile-pill:hover{background:var(--nav-prof-hover);border-color:var(--nav-prof-icon);box-shadow:0 0 15px var(--nav-prof-bg)}.unified-avatar-circle{align-items:center;background:#2563eb66;border-radius:50%;display:flex;height:24px;justify-content:center;width:24px}.profile-user-label{color:var(--nav-text-hover);font-size:12.5px;font-weight:700;white-space:nowrap}.profile-chevron{color:var(--nav-prof-icon);transition:transform .25s ease}.profile-chevron.rotated{transform:rotate(180deg)}.profile-dropdown-menu{animation:fadeInMenu .2s cubic-bezier(.16,1,.3,1);background:var(--nav-bg);border:1px solid var(--nav-border);border-radius:16px;box-shadow:0 20px 45px rgba(0,0,0,calc(var(--shadow-k)*.45)),0 0 25px #2563eb26;display:flex;flex-direction:column;gap:4px;min-width:210px;padding:8px;position:absolute;right:0;top:calc(100% + 12px);z-index:10001}@keyframes fadeInMenu{0%{opacity:0;transform:translateY(-8px) scale(.96)}to{opacity:1;transform:translateY(0) scale(1)}}.dropdown-menu-item{align-items:center;border-radius:10px;color:var(--nav-text);display:flex;font-size:13px;font-weight:600;gap:10px;padding:9px 14px;text-decoration:none;transition:all .2s ease}.dropdown-menu-item:hover{background:var(--nav-hover-bg);color:var(--nav-text-hover);transform:translateX(3px)}.dropdown-menu-item.profile-action{color:var(--nav-text)}.dropdown-menu-item.profile-action:hover{color:var(--nav-prof-icon)}.dropdown-divider{background:var(--nav-border);height:1px;margin:4px 6px}.courses-nav-dropdown-wrapper{display:inline-flex;position:relative}.courses-trigger-btn{align-items:center;display:inline-flex;gap:4px}.nav-chevron{transition:transform .2s ease}.nav-chevron.rotated{transform:rotate(180deg)}.courses-floating-dropdown{animation:fadeInMenu .2s cubic-bezier(.16,1,.3,1);background:var(--nav-bg);border:1px solid var(--nav-border);border-radius:16px;box-shadow:0 20px 45px rgba(0,0,0,calc(var(--shadow-k)*.45)),0 0 25px #2563eb26;display:flex;flex-direction:column;gap:6px;left:50%;max-width:320px;min-width:240px;padding:10px;position:absolute;top:calc(100% + 14px);transform:translateX(-50%);z-index:10001}.courses-dropdown-header{align-items:center;border-bottom:1px solid rgba(var(--hairline),.08);color:var(--text-subtle);display:flex;font-size:11.5px;font-weight:750;justify-content:space-between;letter-spacing:.04em;padding:4px 8px 8px;text-transform:uppercase}.courses-count-badge{background:#2563eb40;border-radius:10px;color:var(--accent-light);font-size:10.5px;padding:2px 7px}.courses-dropdown-list{display:flex;flex-direction:column;gap:4px;max-height:220px;overflow-y:auto}.courses-dropdown-item{align-items:center;border-radius:8px;color:var(--text-main-light);display:flex;font-size:13px;font-weight:600;gap:8px;overflow:hidden;padding:8px 10px;text-decoration:none;text-overflow:ellipsis;transition:all .18s ease;white-space:nowrap}.courses-dropdown-item:hover{background:var(--bg-card-header);color:var(--accent-light);transform:translateX(3px)}.course-item-bullet{background:var(--accent-hover);border-radius:50%;flex-shrink:0;height:6px;width:6px}.course-item-title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.courses-dropdown-empty{color:var(--text-dim);font-size:12.5px;padding:14px;text-align:center}.courses-dropdown-footer{border-top:1px solid rgba(var(--hairline),.08);padding-top:6px}.courses-all-link{border-radius:6px;color:var(--accent-light);display:block;font-size:12px;font-weight:750;padding:6px;text-align:center;text-decoration:none;transition:all .2s ease}.courses-all-link:hover{background:#2563eb26;color:var(--fg-blue-300)}.unified-login-pill{align-items:center;background:var(--bg-ffffff);border-radius:50px;box-shadow:0 4px 14px #ffffff40;color:var(--fg-0f172a);display:inline-flex;font-size:13px;font-weight:750;padding:7px 18px;text-decoration:none;transition:all .2s ease}.unified-login-pill:hover{box-shadow:0 6px 20px #ffffff73;transform:translateY(-2px) scale(1.03)}@media (max-width:768px){.aceternity-navbar-wrapper,.fixed-brand-container{display:none}}.brand-logo{align-items:center;display:inline-flex;gap:.42em;line-height:1;-webkit-user-select:none;user-select:none;vertical-align:middle;white-space:nowrap}.brand-logo__name{color:#121b2b;color:var(--text-bright,#121b2b);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-weight:800;letter-spacing:-.02em}.brand-logo__accent{color:#1a55c4;color:var(--accent-text,#1a55c4)}.brand-logo--on-dark .brand-logo__name{color:#fff}.brand-logo--on-dark .brand-logo__accent{color:#86b4ff}.teacher-registration-modal{align-items:center;animation:fadeIn .3s ease-in-out;background-color:#000000b3;display:flex;height:100%;justify-content:center;left:0;position:fixed;top:0;width:100%;z-index:1000}.teacher-registration-container{animation:slideUp .3s ease-in-out;background-color:var(--bg-ffffff);border-radius:15px;box-shadow:0 10px 40px rgba(0,0,0,calc(var(--shadow-k)*.3));max-height:85vh;max-width:700px;overflow-y:auto;width:90%}@keyframes slideUp{0%{opacity:0;transform:translateY(50px)}to{opacity:1;transform:translateY(0)}}.teacher-registration-header{align-items:center;background:var(--accent-primary);border-bottom:2px solid var(--line-f0f0f0);border-radius:15px 15px 0 0;color:#fff;display:flex;justify-content:space-between;padding:2rem}.teacher-registration-header h2{font-size:1.8rem;font-weight:700;margin:0}.close-btn{color:#fff;font-size:1.5rem;transition:all .2s ease}.close-btn:hover{transform:scale(1.2) rotate(90deg)}.teacher-registration-body{padding:2rem}.teacher-name-section{margin-bottom:2rem}.teacher-name-section label{color:var(--fg-333333);display:block;font-size:1rem;font-weight:700;margin-bottom:.5rem}.required{color:var(--error-text)}.teacher-name-input{border:2px solid var(--line-e0e0e0);border-radius:8px;box-sizing:border-box;font-size:1rem;padding:.8rem;transition:all .3s ease;width:100%}.teacher-name-input:focus{border-color:var(--accent-primary);box-shadow:0 0 8px #667eea4d;outline:none}.groups-section{margin-top:2rem}.groups-section h3{align-items:center;color:var(--fg-333333);display:flex;font-size:1.2rem;gap:.5rem;margin-bottom:1.5rem}.group-card{background-color:var(--bg-f9f9f9);border:2px solid var(--line-e0e0e0);border-radius:10px;margin-bottom:1.5rem;padding:1.5rem;transition:all .3s ease}.group-card:hover{border-color:var(--accent-primary);box-shadow:0 4px 12px #667eea26}.group-header{align-items:center;display:flex;gap:1rem;margin-bottom:1rem}.group-name-input{border:2px solid var(--line-e0e0e0);border-radius:8px;box-sizing:border-box;flex:1 1;font-size:1rem;font-weight:600;padding:.8rem;transition:all .3s ease}.group-name-input:focus{border-color:var(--accent-primary);box-shadow:0 0 8px #667eea4d;outline:none}.remove-group-btn{background-color:var(--error);border:none;border-radius:6px;color:#fff;cursor:pointer;font-weight:600;padding:.6rem 1.2rem;transition:all .3s ease;white-space:nowrap}.remove-group-btn:hover{background-color:#ff5252;box-shadow:0 4px 12px #ff6b6b4d;transform:translateY(-2px)}.students-section{margin-top:1rem}.students-section label{color:var(--fg-666666);display:block;font-size:.95rem;font-weight:600;margin-bottom:.8rem}.student-input-row{align-items:center;display:flex;gap:.5rem;margin-bottom:.8rem}.student-name-input{border:1px solid var(--line-e0e0e0);border-radius:6px;box-sizing:border-box;flex:1 1;font-size:.95rem;padding:.7rem;transition:all .3s ease}.student-name-input:focus{border-color:var(--accent-primary);box-shadow:0 0 6px #667eea33;outline:none}.remove-student-btn{background-color:var(--error);border:none;border-radius:4px;color:#fff;cursor:pointer;font-size:1rem;min-width:35px;padding:.5rem .8rem;transition:all .3s ease}.remove-student-btn:hover{background-color:#ff5252;transform:scale(1.1)}.add-student-btn{background-color:var(--accent-primary);border:none;border-radius:6px;color:#fff;cursor:pointer;font-size:.95rem;font-weight:600;margin-top:.8rem;padding:.6rem 1rem;transition:all .3s ease}.add-student-btn:hover{background-color:var(--accent-active);box-shadow:0 4px 12px #667eea4d;transform:translateY(-2px)}.add-group-btn{background:var(--accent-primary);border:none;border-radius:8px;color:#fff;cursor:pointer;font-size:1rem;font-weight:700;margin-top:1rem;padding:1rem;transition:all .3s ease;width:100%}.add-group-btn:hover{box-shadow:0 6px 20px #667eea4d;transform:translateY(-3px)}.teacher-registration-footer{background-color:var(--bg-f9f9f9);border-radius:0 0 15px 15px;border-top:2px solid var(--line-f0f0f0);display:flex;gap:1rem;justify-content:flex-end;padding:2rem}.popup-btn,.popup-btn2{border:none;border-radius:6px;cursor:pointer;font-size:1rem;font-weight:700;padding:.8rem 1.5rem;transition:all .3s ease}.popup-btn{background-color:var(--bg-e0e0e0);color:var(--fg-333333)}.popup-btn:hover{background-color:var(--bg-d0d0d0);transform:translateY(-2px)}.popup-btn2{box-shadow:0 4px 15px #667eea4d;color:#fff}.popup-btn2:hover:not(:disabled){box-shadow:0 6px 20px #667eea66;transform:translateY(-2px)}.popup-btn2:disabled{cursor:not-allowed;opacity:.6}.error{border-left:4px solid var(--error);border-radius:4px;font-weight:600;padding:1rem}.error,.error-dengare{background-color:var(--bg-fff5f5);color:var(--fg-c92a2a)}.error-dengare{border-left-color:var(--error)}.teacher-registration-container::-webkit-scrollbar{width:8px}.teacher-registration-container::-webkit-scrollbar-track{background:var(--bg-f1f1f1);border-radius:10px}.teacher-registration-container::-webkit-scrollbar-thumb{background:var(--accent-primary);border-radius:10px}.teacher-registration-container::-webkit-scrollbar-thumb:hover{background:var(--accent-active)}@media (max-width:768px){.teacher-registration-modal{padding:1rem}.teacher-registration-container{max-height:90vh;max-width:100%}.teacher-registration-header{padding:1.5rem}.teacher-registration-header h2{font-size:1.5rem}.teacher-registration-body{padding:1.5rem}.group-header{align-items:stretch;flex-direction:column}.group-name-input,.remove-group-btn{width:100%}.teacher-registration-footer{flex-direction:column}.popup-btn,.popup-btn2{width:100%}}.h-100vh{height:100vh}.d-flex{display:flex}.d-block{display:block}.d-none{display:none}.flex-wrap{flex-wrap:wrap}.flex-direction-column{flex-direction:column}.justify-content-center{justify-content:center}.justify-content-space-around{justify-content:space-around}.justify-content-space-between{justify-content:space-between}.justify-content-flex-start{justify-content:flex-start}.align-items-center{align-items:center}.text-center{text-align:center}.text-color{color:var(--bg-card);color:var(--text,var(--bg-card))}.text-error{color:var(--fg-dc2626)!important;color:var(--error-text,var(--fg-dc2626))!important}.text-red{color:var(--fg-dc2626);color:var(--error-text,var(--fg-dc2626))}.text-purple{color:var(--accent-text);color:var(--sat-blue-text,var(--accent-text))}.text-gray{color:var(--text-dim);color:var(--text-muted,var(--text-dim))}.error-line{color:var(--fg-dc2626);color:var(--error-text,var(--fg-dc2626));font-size:15px;font-weight:500;margin-top:-1rem}.error{background-color:var(--bg-fef2f2);background-color:var(--error-bg,var(--bg-fef2f2));border:1px solid var(--line-fecaca);border-radius:10px;border-radius:var(--radius,10px);color:#dc2626;color:var(--error,#dc2626);display:block;font-size:14px;font-weight:500;margin-bottom:1rem;max-width:380px;padding:.75rem 1rem;text-align:center;width:100%}.error-dengare{margin-bottom:0;margin-top:.5rem;max-width:100%;width:100%}.form-body-list .ql-editor,.question-form-body .ql-editor{border:none;box-shadow:none;color:inherit;font-family:inherit;font-size:inherit;line-height:inherit;overflow:visible;padding:0}.input-form{background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));border:1px solid var(--border,var(--text-muted));border-radius:10px;border-radius:var(--radius,10px);color:var(--bg-card);color:var(--text,var(--bg-card));font-family:Inter,sans-serif;font-family:var(--font-body,"Inter",sans-serif);font-size:15px;margin-top:1.5rem;max-width:340px;outline:none;padding:10px 14px;transition:border-color .15s ease;width:100%}.input-form:focus{border-color:var(--sat-blue,var(--accent-primary));box-shadow:0 0 0 3px #2563eb1a}.button{background-color:#1b3a6b;background-color:var(--sat-navy,#1b3a6b);border:none;border-radius:10px;border-radius:var(--radius,10px);color:var(--fixed-50);cursor:pointer;font-family:Inter,sans-serif;font-family:var(--font-body,"Inter",sans-serif);font-size:.95rem;font-weight:600;letter-spacing:.01em;padding:.55rem 1.2rem;transition:background-color .15s ease,transform .1s ease}.button:hover{background-color:var(--accent-primary);background-color:var(--sat-blue,var(--accent-primary))}.button:active{transform:scale(.98)}.popup-btn,.popup-btn2{margin:0 .3rem}.popup-btn2{background-color:var(--sat-blue,var(--accent-primary))}.popup-btn2:hover{background-color:var(--accent-active);background-color:var(--sat-hover-blue,var(--accent-active))}.btn-red{background-color:#dc2626!important;background-color:var(--error,#dc2626)!important;color:#fff!important}.loader{animation:rotation .8s linear infinite;border:2.5px solid #ffffff80;border-bottom:2.5px solid var(--fixed-50);border-radius:50%;box-sizing:border-box;display:inline-block;height:18px;vertical-align:middle;width:18px}@keyframes rotation{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}.error-container,.loading-container{align-items:center;display:flex;justify-content:center;padding-top:12rem}.alert{background-color:#16a34a;background-color:var(--success,#16a34a);border-radius:10px;border-radius:var(--radius,10px);box-shadow:var(--shadow-lg);color:var(--fixed-50);font-size:15px;font-weight:500;left:50%;max-width:90vw;padding:.85rem 1rem;position:fixed;text-align:center;top:-200px;transform:translateX(-50%);transition:top .4s cubic-bezier(.34,1.56,.64,1);width:320px;z-index:99999}.alert-active{top:80px!important}.skeleton{animation:skeleton-loading 1.2s ease-in-out infinite alternate;border-radius:6px;border-radius:var(--radius-sm,6px)}@keyframes skeleton-loading{0%{background-color:#dce0e5}to{background-color:#f3f5f6}}.keyboard-container{grid-gap:6px;background-color:var(--bg-ffffff);background-color:var(--surface,var(--bg-ffffff));border-radius:10px;border-radius:var(--radius,10px);box-shadow:var(--shadow);display:grid;gap:6px;grid-template-columns:repeat(3,1fr);margin-top:8px;padding:8px;position:relative;width:100%;z-index:1000}.digit-button,.keyboard-container{border:1px solid var(--border-light,var(--text-main-lighter))}.digit-button{align-items:center;aspect-ratio:1;background-color:#223149;background-color:var(--surface,#223149);border-radius:6px;border-radius:var(--radius-sm,6px);color:#f8fafc;color:var(--text-main,#f8fafc);cursor:pointer;display:flex;font-family:Inter,sans-serif;font-family:var(--font-body,"Inter",sans-serif);font-size:1.4rem;font-weight:600;justify-content:center;margin:0!important;min-height:46px;padding:0!important;transition:background-color .1s ease,transform .1s ease;width:100%!important}:root[data-theme=light] .digit-button{background-color:#f1f5f9;color:#0f172a}.digit-button.digit-num:hover{background-color:var(--bg-eff6ff);background-color:var(--sat-light-blue,var(--bg-eff6ff));border-color:var(--sat-blue,var(--accent-primary));color:var(--accent-primary);color:var(--sat-blue,var(--accent-primary))}.digit-button.digit-action{background-color:var(--text-main-light);background-color:var(--surface-muted,var(--text-main-light));color:var(--text-dim);color:var(--text-muted,var(--text-dim))}.digit-button.digit-action:hover{background-color:var(--bg-fee2e2);color:var(--fg-dc2626);color:var(--error-text,var(--fg-dc2626))}.digit-button:active{transform:scale(.94)}.toggle-btn{aspect-ratio:1;background-color:#1b3a6b;background-color:var(--sat-navy,#1b3a6b);border:1px solid var(--border-light,var(--text-main-lighter));border-radius:6px;border-radius:var(--radius-sm,6px);color:var(--fixed-50);cursor:pointer;font-size:1rem;font-weight:600;margin:0!important;min-height:46px;padding:0!important;transition:all .15s ease;width:100%!important}.toggle-btn:hover{background-color:var(--accent-primary);background-color:var(--sat-blue,var(--accent-primary))}.keyboard-next-btn{align-items:center;aspect-ratio:auto!important;background-color:var(--accent-primary)!important;background-color:var(--sat-blue,var(--accent-primary))!important;border:none;border-radius:6px;border-radius:var(--radius-sm,6px);color:#fff!important;cursor:pointer;display:flex;font-size:1rem;font-weight:600;grid-column:span 3;justify-content:center;margin-top:4px;min-height:46px;padding:10px!important;width:100%!important}.keyboard-next-btn:hover{background-color:var(--accent-active)!important;background-color:var(--sat-hover-blue,var(--accent-active))!important}.input-style{background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));border:1px solid var(--border,var(--text-muted));border-radius:10px;border-radius:var(--radius,10px);box-sizing:border-box;color:var(--bg-card);color:var(--text,var(--bg-card));cursor:pointer;font-family:Inter,sans-serif;font-family:var(--font-body,"Inter",sans-serif);font-size:16px;outline:none;padding:10px 14px;transition:border-color .15s ease,box-shadow .15s ease;width:100%}.input-style:focus{border-color:var(--sat-blue,var(--accent-primary));box-shadow:0 0 0 3px #2563eb1a}@media only screen and (max-width:600px){.digit-button{font-size:1.25rem;min-height:42px}.keyboard-container{gap:5px;padding:6px}}@media only screen and (max-width:360px){.digit-button{font-size:1.1rem;min-height:38px}}.nav-mobile{background:#0000!important;border:none!important;bottom:15px!important;box-shadow:none!important;display:none;position:fixed!important;top:auto!important;width:100%;z-index:99999999}.nav-mobile-container{align-items:center;background-color:var(--bg-f8fafc);border-radius:20px;box-shadow:0 4px 8px 0 rgba(0,0,0,calc(var(--shadow-k)*.2)),0 6px 20px 0 rgba(0,0,0,calc(var(--shadow-k)*.19));display:flex;justify-content:space-around;margin:auto;padding:.8rem .5rem;width:96%}.nav-item{align-items:center;border-radius:12px;cursor:pointer;display:flex;flex-direction:column;gap:.25rem;justify-content:center;min-width:60px;padding:.5rem .4rem;text-decoration:none;transition:all .2s ease}.nav-item i{font-size:24px}.nav-item i,.nav-label{color:var(--text-subtle);transition:all .2s ease}.nav-label{font-size:11px;font-weight:600;margin:0;text-align:center}.nav-item.active{background-color:var(--accent-primary)}.nav-item.active .nav-label,.nav-item.active i{color:#fff}.nav-item:hover{background-color:var(--bg-f0f0f0)}.nav-item.active:hover{background-color:var(--accent-primary)}@media only screen and (max-width:768px){.nav-mobile{display:block!important}}@media only screen and (max-width:600px){.nav-item{min-width:50px;padding:.4rem .3rem}.nav-item i{font-size:22px}.nav-label{font-size:10px}}@media only screen and (max-width:400px){.nav-item{gap:.15rem;min-width:45px}.nav-item i{font-size:20px}.nav-label{font-size:9px}.nav-mobile-container{padding:.6rem .3rem}}.featured-videos-section{background:linear-gradient(180deg,var(--bg-main) 0,#0d152a 50%,var(--bg-main) 100%);border-bottom:1px solid #3b82f61f;border-top:1px solid #3b82f61f;overflow:hidden;padding:5rem 2rem 4rem;position:relative}.featured-videos-container{margin:0 auto;max-width:1240px;position:relative;z-index:2}.section-header-row{align-items:flex-end;display:flex;flex-wrap:wrap;gap:1.5rem;justify-content:space-between;margin-bottom:3rem}.header-text-block{max-width:760px}.featured-videos-pill{align-items:center;background:var(--sat-light-blue);border:1px solid #2e6be659;border-radius:999px;color:var(--accent-text);display:inline-flex;font-size:12.5px;font-weight:700;gap:8px;letter-spacing:.04em;margin-bottom:1rem;padding:6px 14px;text-transform:uppercase}.featured-videos-title{color:var(--text-main);font-size:clamp(2rem,3.5vw,2.6rem);font-weight:800;letter-spacing:-.02em;line-height:1.2;margin:0 0 .75rem}.featured-videos-subtitle{color:var(--text-subtle);font-size:1.05rem;line-height:1.6;margin:0}.teacher-video-action-box{align-items:center;display:flex}.add-video-btn{align-items:center;background:linear-gradient(135deg,var(--accent-primary) 0,var(--accent-active) 100%);border:1px solid rgba(var(--hairline),.2);border-radius:12px;box-shadow:0 4px 15px #2563eb59;color:var(--fixed-50);cursor:pointer;display:inline-flex;font-size:14px;font-weight:700;gap:8px;padding:10px 20px;transition:all .25s ease}.add-video-btn:hover{background:linear-gradient(135deg,var(--accent-active) 0,#1e40af 100%);box-shadow:0 8px 24px #2563eb80;transform:translateY(-2px)}.video-boxes-grid{grid-gap:1.75rem;display:grid;gap:1.75rem;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));margin-bottom:2.5rem}.video-box-card{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:rgba(var(--glass-900),.75);border:1px solid rgba(var(--hairline),.08);border-radius:18px;box-shadow:0 10px 30px rgba(0,0,0,calc(var(--shadow-k)*.3));cursor:pointer;display:flex;flex-direction:column;overflow:hidden;position:relative;transition:all .32s cubic-bezier(.16,1,.3,1)}.video-box-card:hover{border-color:#60a5fa66;box-shadow:0 20px 40px #2563eb38;transform:translateY(-6px)}.video-thumb-container{aspect-ratio:16/10;background:#020617;overflow:hidden;position:relative;width:100%}.video-thumb-img{height:100%;object-fit:cover;transition:transform .4s ease;width:100%}.video-box-card:hover .video-thumb-img{transform:scale(1.06)}.video-thumb-backdrop{background:linear-gradient(180deg,#0206171a,#020617b3);inset:0;pointer-events:none;position:absolute}.video-card-tag{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#0f172ad9;border:1px solid #ffffff26;border-radius:6px;color:#60a5fa;left:12px;letter-spacing:.02em;padding:4px 10px;top:12px}.video-card-duration,.video-card-tag{font-size:11px;font-weight:700;position:absolute;z-index:3}.video-card-duration{background:#000c;border-radius:4px;bottom:10px;color:var(--fixed-200);padding:2px 7px;right:12px}.video-play-orb{align-items:center;background:#ef4444e6;border-radius:50%;box-shadow:0 0 25px #ef444499;display:flex;height:52px;justify-content:center;left:50%;position:absolute;top:50%;transform:translate(-50%,-50%);transition:all .3s cubic-bezier(.16,1,.3,1);width:52px;z-index:4}.video-play-orb .play-icon-svg{margin-left:3px;transition:transform .25s ease}.video-box-card:hover .video-play-orb{background:#dc2626;box-shadow:0 0 35px #ef4444d9;transform:translate(-50%,-50%) scale(1.15)}.video-box-card:hover .play-icon-svg{transform:scale(1.1)}.teacher-card-tools{display:flex;gap:6px;position:absolute;right:10px;top:10px;z-index:10}.card-tool-btn{align-items:center;background:#0f172ad9;border:1px solid #ffffff26;border-radius:6px;color:var(--fixed-400);cursor:pointer;display:flex;height:28px;justify-content:center;transition:all .2s ease;width:28px}.card-tool-btn.edit:hover{background:var(--accent-primary);border-color:var(--accent-hover);color:var(--fixed-50)}.card-tool-btn.delete:hover{background:#dc2626;border-color:#ef4444;color:var(--fixed-50)}.video-box-info{background:rgba(var(--glass-900),.4);display:flex;flex-direction:column;flex-grow:1;justify-content:space-between;padding:1.25rem}.video-box-title{-webkit-line-clamp:2;-webkit-box-orient:vertical;color:var(--text-main-light);display:-webkit-box;font-size:.98rem;font-weight:700;line-height:1.45;margin:0 0 .85rem;overflow:hidden;transition:color .2s ease}.video-box-card:hover .video-box-title{color:var(--accent-light)}.video-box-action{align-items:center;border-top:1px solid rgba(var(--hairline),.06);display:flex;justify-content:space-between;padding-top:.75rem}.watch-text{align-items:center;color:var(--text-muted);display:inline-flex;font-size:12.5px;font-weight:700;gap:6px}.arrow-sym{color:var(--accent-light);font-size:14px;transition:transform .2s ease}.video-box-card:hover .arrow-sym{transform:translateX(4px)}.video-box-card.add-tile{align-items:center;background:#1e3a8a14;border:2px dashed #3b82f666;display:flex;justify-content:center;min-height:260px}.video-box-card.add-tile:hover{background:#1e3a8a26;border-color:var(--accent-hover)}.add-tile-content{align-items:center;display:flex;flex-direction:column;padding:2rem 1.5rem;text-align:center}.add-tile-icon-circle{align-items:center;background:#2563eb33;border:1.5px solid #60a5fa66;border-radius:50%;color:var(--accent-light);display:flex;height:56px;justify-content:center;margin-bottom:1rem;transition:transform .25s ease;width:56px}.video-box-card.add-tile:hover .add-tile-icon-circle{background:var(--accent-primary);color:var(--fixed-50);transform:scale(1.1) rotate(90deg)}.add-tile-content h4{color:var(--text-main);font-size:1.05rem;font-weight:800;margin:0 0 .5rem}.add-tile-content p{color:var(--text-subtle);font-size:.82rem;line-height:1.45;margin:0 0 1.25rem}.add-tile-btn{align-items:center;background:rgba(var(--hairline),.08);border:1px solid rgba(var(--hairline),.15);border-radius:8px;color:var(--fg-blue-300);display:inline-flex;font-size:12px;font-weight:700;gap:6px;padding:6px 14px}.featured-videos-footer-bar{align-items:center;border-top:1px solid rgba(var(--hairline),.08);display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;padding-top:1.5rem}.footer-tip{align-items:center;color:var(--text-subtle);display:flex;font-size:13px;gap:8px}.reset-defaults-link{align-items:center;background:#0000;border:none;color:var(--text-dim);cursor:pointer;display:inline-flex;font-size:12px;font-weight:600;gap:5px;transition:color .2s ease}.reset-defaults-link:hover{color:var(--text-muted);text-decoration:underline}.video-theater-overlay{align-items:center;animation:fadeInModal .24s cubic-bezier(.16,1,.3,1);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#020617e0;display:flex;inset:0;justify-content:center;padding:1.5rem;position:fixed;z-index:999999}.video-theater-modal{background:var(--bg-card);border:1px solid #ffffff26;border-radius:20px;box-shadow:0 25px 60px rgba(0,0,0,calc(var(--shadow-k)*.7));display:flex;flex-direction:column;max-width:960px;overflow:hidden;width:100%}.theater-modal-header{align-items:center;background:rgba(var(--glass-800),.5);border-bottom:1px solid rgba(var(--hairline),.08);display:flex;justify-content:space-between;padding:1.25rem 1.75rem}.theater-header-left{align-items:center;display:flex;gap:12px;overflow:hidden}.theater-tag{background:#2563eb33;border:1px solid #60a5fa66;border-radius:6px;color:var(--fg-blue-300);font-size:11px;font-weight:700;padding:4px 10px;white-space:nowrap}.theater-title{color:var(--text-main);font-size:1.15rem;font-weight:800;margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.theater-close-btn{align-items:center;background:rgba(var(--hairline),.08);border:1px solid rgba(var(--hairline),.15);border-radius:10px;color:var(--text-main-lighter);cursor:pointer;display:flex;flex-shrink:0;height:36px;justify-content:center;transition:all .2s ease;width:36px}.theater-close-btn:hover{background:#dc2626;border-color:#ef4444;color:var(--fixed-50)}.theater-video-frame-wrap{aspect-ratio:16/9;background:#000;position:relative;width:100%}.theater-iframe{height:100%;inset:0;position:absolute;width:100%}.theater-footer{align-items:center;background:rgba(var(--glass-900),.85);border-top:1px solid rgba(var(--hairline),.08);display:flex;flex-wrap:wrap;gap:1rem;justify-content:space-between;padding:1.15rem 1.75rem}.theater-footer p{color:var(--text-subtle);font-size:13px;margin:0}.open-in-youtube-btn{align-items:center;background:#ef444426;border:1px solid #ef444459;border-radius:8px;color:var(--fg-red-300);display:inline-flex;font-size:12.5px;font-weight:700;gap:8px;padding:7px 14px;text-decoration:none;transition:all .2s ease}.open-in-youtube-btn:hover{background:#dc2626;color:var(--fixed-50)}.video-manage-overlay{align-items:center;animation:fadeInModal .2s cubic-bezier(.16,1,.3,1);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#020617cc;display:flex;inset:0;justify-content:center;padding:1.5rem;position:fixed;z-index:999999}.video-manage-modal{background:var(--bg-card);border:1.5px solid #3b82f659;border-radius:20px;box-shadow:0 25px 60px rgba(0,0,0,calc(var(--shadow-k)*.65));max-width:540px;overflow:hidden;width:100%}.manage-modal-header{align-items:center;background:rgba(var(--glass-800),.5);border-bottom:1px solid rgba(var(--hairline),.08);display:flex;justify-content:space-between;padding:1.5rem 1.75rem}.modal-title-wrap{align-items:center;display:flex;gap:14px}.modal-icon-badge{align-items:center;background:#2563eb2e;border:1px solid #60a5fa59;border-radius:12px;display:flex;height:42px;justify-content:center;width:42px}.modal-title-wrap h3{color:var(--text-main);font-size:1.2rem;font-weight:800;margin:0 0 2px}.modal-title-wrap p{color:var(--text-subtle);font-size:.8rem;margin:0}.manage-close-btn{align-items:center;background:rgba(var(--hairline),.08);border:1px solid rgba(var(--hairline),.15);border-radius:8px;color:var(--text-subtle);cursor:pointer;display:flex;height:34px;justify-content:center;transition:all .2s ease;width:34px}.manage-close-btn:hover{background:#ef444433;color:var(--error-text)}.manage-modal-form{display:flex;flex-direction:column;gap:1.25rem;padding:1.75rem}.form-error-alert{background:#ef444426;border:1px solid #ef444466;border-radius:10px;color:var(--fg-red-300);font-size:13px;font-weight:600;padding:10px 14px}.form-group{display:flex;flex-direction:column;gap:6px}.form-group label{color:var(--text-muted);font-size:13px;font-weight:700}.form-group label .req{color:var(--error-text)}.form-input,.form-select{background:rgba(var(--glass-900),.8);border:1px solid rgba(var(--hairline),.12);border-radius:10px;color:var(--text-main);font-family:inherit;font-size:14px;outline:none;padding:10px 14px;transition:all .2s ease}.form-input:focus,.form-select:focus{border-color:var(--accent-hover);box-shadow:0 0 0 3px #3b82f640}.input-hint{color:var(--text-dim);font-size:11.5px}.form-row-2{grid-gap:1rem;display:grid;gap:1rem;grid-template-columns:1fr 1fr}.youtube-preview-box{background:#02061780;border:1px solid #3b82f640;border-radius:12px;padding:12px}.preview-label{color:var(--fg-blue-300);display:block;font-size:11.5px;font-weight:700;margin-bottom:8px}.preview-thumb-wrap{align-items:center;display:flex;gap:14px}.preview-img{border:1px solid rgba(var(--hairline),.1);border-radius:8px;height:65px;object-fit:cover;width:110px}.preview-indicator{align-items:center;color:var(--fg-emerald-400);display:inline-flex;font-size:12.5px;font-weight:700;gap:6px}.form-actions{align-items:center;border-top:1px solid rgba(var(--hairline),.08);display:flex;gap:10px;justify-content:flex-end;margin-top:.5rem;padding-top:1rem}.cancel-btn{background:rgba(var(--hairline),.06);border:1px solid rgba(var(--hairline),.12);border-radius:10px;color:var(--text-muted);cursor:pointer;font-size:13.5px;font-weight:700;padding:10px 18px;transition:all .2s ease}.cancel-btn:hover{background:rgba(var(--hairline),.12);color:var(--text-main)}.save-submit-btn{background:linear-gradient(135deg,var(--accent-primary) 0,var(--accent-active) 100%);border:1px solid rgba(var(--hairline),.2);border-radius:10px;box-shadow:0 4px 15px #2563eb59;color:var(--fixed-50);cursor:pointer;font-size:13.5px;font-weight:700;padding:10px 22px;transition:all .2s ease}.save-submit-btn:hover{background:linear-gradient(135deg,var(--accent-active) 0,#1e40af 100%);box-shadow:0 6px 20px #2563eb80;transform:translateY(-1px)}@keyframes fadeInModal{0%{opacity:0;transform:scale(.97)}to{opacity:1;transform:scale(1)}}@media (max-width:768px){.featured-videos-section{padding:3.5rem 1rem 3rem}.video-boxes-grid{gap:1.25rem;grid-template-columns:1fr}.theater-footer{align-items:flex-start;flex-direction:column}.form-row-2{grid-template-columns:1fr}}.vertical-layout{background:#0000!important;padding:0!important}.vertical-layout .video-boxes-grid{gap:12px;grid-template-columns:1fr}.vertical-layout .featured-videos-container{max-width:100%;padding:0}.vertical-layout .section-header-row{align-items:flex-start;border-bottom:none;flex-direction:column;margin-bottom:20px}.vertical-layout .featured-videos-title{font-size:22px}.vertical-layout .featured-videos-subtitle{font-size:14px;margin-bottom:0}.vertical-layout .video-box-card{align-items:center;flex-direction:row;padding:12px}.vertical-layout .video-thumbnail-box{flex-shrink:0;height:80px;margin-bottom:0;margin-right:16px;width:120px}.vertical-layout .video-info-box{padding:0}.vertical-layout .video-title{font-size:14px;margin-bottom:4px}.vertical-layout .video-meta{font-size:11px}:root[data-theme=dark]{--home-bg:var(--bg-main);--home-text:var(--text-main);--home-hero-bg:var(--bg-main);--home-hero-radial:#2e6be633;--home-hero-inner:#1a2332f5;--home-gradient-glow:#2e6be629;--home-gradient-glow-2:#2e6be60d;--home-pill-bg:#8ab8ff21;--home-pill-border:#8ab8ff52;--home-pill-text:#b0cfff;--home-sparkle:var(--accent-light);--home-title-gradient-1:#8ab8ff;--home-title-gradient-2:#b9c8ff;--home-section-bg:var(--bg-section);--home-card-bg:var(--bg-card);--home-card-header:var(--bg-card-header);--home-card-border:#8ab8ff38;--home-card-border-hover:#8ab8ff6b;--home-pill-2-bg:#8ab8ff21;--home-pill-2-border:#8ab8ff4d;--home-pill-2-text:#b0cfff;--home-cta-1:var(--accent-primary);--home-cta-2:var(--accent-active)}:root[data-theme=light]{--home-bg:var(--bg-main);--home-text:var(--fixed-800);--home-hero-bg:var(--bg-main);--home-hero-radial:#1f5fd821;--home-hero-inner:#e8edf4e6;--home-gradient-glow:#1f5fd824;--home-gradient-glow-2:#1f5fd80d;--home-pill-bg:#1f5fd81a;--home-pill-border:#1f5fd84d;--home-pill-text:#1a55c4;--home-sparkle:#1f5fd8;--home-title-gradient-1:#1f5fd8;--home-title-gradient-2:#3b4fd1;--home-section-bg:var(--bg-section);--home-card-bg:#fff;--home-card-header:var(--bg-card-header);--home-card-border:#1f5fd833;--home-card-border-hover:#1f5fd866;--home-pill-2-bg:#1f5fd81a;--home-pill-2-border:#1f5fd84d;--home-pill-2-text:#1a55c4;--home-cta-1:var(--accent-primary);--home-cta-2:var(--accent-active)}.sparkle-icon{animation:pulse-sparkle 2s ease-in-out infinite;color:var(--home-sparkle)}.title-gradient{-webkit-text-fill-color:#0000;background:linear-gradient(135deg,var(--home-title-gradient-1) 0,var(--home-title-gradient-2) 100%);-webkit-background-clip:text}.metric-label{font-size:14px;font-weight:600;margin-top:4px}.section-title{color:var(--home-text);font-size:2.4rem;font-weight:800;letter-spacing:-.02em;line-height:1.25;margin:0 0 14px}.icon-blue{background:#2563eb26;border:1px solid #38bdf840;color:var(--fg-sky-400)}.icon-purple{background:#9333ea26;border:1px solid #c084fc40;color:var(--accent-text)}.icon-emerald{background:#10b98126;border:1px solid #34d39940;color:var(--fg-emerald-400)}.hm{background:var(--bg-main);color:var(--text-main);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;min-height:100vh;overflow-x:hidden}.home{background:#0000;position:relative;z-index:10}.hm-wrap{margin:0 auto;max-width:1120px;padding:0 24px}.hm-section{padding:88px 0}.hm-band{background:var(--bg-section);border-bottom:1px solid var(--border);border-top:1px solid var(--border)}.hm-eyebrow{align-items:center;color:var(--accent-text);display:inline-flex;font-size:13px;font-weight:700;gap:6px;letter-spacing:.04em;margin-bottom:16px;text-transform:uppercase}.hm-h2{color:var(--text-main);font-size:clamp(1.7rem,3.2vw,2.3rem);font-weight:800;letter-spacing:-.025em;line-height:1.2;margin:0 0 12px;text-align:center}.hm-h2.hm-left{margin-bottom:24px;text-align:left}.hm-sub{color:var(--text-subtle);font-size:1.05rem;margin:0 auto 40px;max-width:560px;text-align:center}.hm-btn{align-items:center;border-radius:12px;display:inline-flex;font-size:15.5px;font-weight:700;gap:8px;padding:13px 22px;text-decoration:none;transition:background-color .15s ease,border-color .15s ease,transform .15s ease}.hm-btn:hover{transform:translateY(-1px)}.hm-btn-primary{background:var(--accent-primary);box-shadow:0 8px 24px -10px #2e6be6b3;color:#fff}.hm-btn-primary:hover{background:var(--accent-hover);color:#fff}.hm-btn-ghost{background:#0000;border:1px solid var(--border);color:var(--text-main)}.hm-btn-ghost:hover{border-color:var(--accent-text);color:var(--text-main)}.hm-hero{background:radial-gradient(ellipse 70% 60% at 70% 0,var(--home-hero-radial),#0000 70%);padding:150px 0 40px}.hm-hero-grid{grid-gap:64px;align-items:center;display:grid;gap:64px;grid-template-columns:1.2fr .8fr}.hm-title{color:var(--text-main);font-size:clamp(2.3rem,5.4vw,3.6rem);font-weight:800;letter-spacing:-.035em;line-height:1.08;margin:0 0 20px}.hm-accent{color:var(--accent-text)}.hm-lead{color:var(--text-muted);font-size:1.15rem;line-height:1.6;margin:0 0 32px;max-width:540px}.hm-ctas{display:flex;flex-wrap:wrap;gap:12px}.hm-mobile-logo{display:none!important}.hm-demo{background:var(--bg-card);border:1px solid var(--border);border-radius:18px;box-shadow:0 24px 60px -30px #00000073;padding:22px}.hm-demo-head{color:var(--text-subtle);display:flex;font-size:13px;font-weight:700;justify-content:space-between;margin-bottom:10px}.hm-demo-marks{color:var(--accent-text)}.hm-demo-q{color:var(--text-main);font-size:15px;font-weight:600;line-height:1.5;margin:0 0 16px}.hm-demo-lines{grid-gap:8px;display:grid;gap:8px;list-style:none;margin:0;padding:0}.hm-demo-lines li{align-items:center;background:var(--bg-section);border-radius:10px;color:var(--text-main);display:flex;font-family:Cambria Math,Times New Roman,serif;font-size:16px;gap:12px;justify-content:space-between;padding:10px 12px}.hm-demo-mark{align-items:center;background:#22c55e24;border-radius:999px;color:var(--success-text);display:inline-flex;font-family:Inter,-apple-system,sans-serif;font-size:12px;font-weight:800;gap:4px;padding:3px 8px;white-space:nowrap}.hm-demo-total{align-items:baseline;border-top:1px dashed var(--border);color:var(--text-subtle);display:flex;font-size:13px;font-weight:700;justify-content:space-between;margin-top:14px;padding-top:14px}.hm-demo-total strong{color:var(--success-text);font-size:22px}.hm-boards{grid-gap:20px;display:grid;gap:20px;grid-template-columns:repeat(2,minmax(0,1fr))}.hm-board{background:var(--bg-card);border:1px solid var(--border);border-radius:20px;border-top:4px solid var(--board);display:flex;flex-direction:column;gap:18px;padding:24px}.hm-board,.hm-board-blue{--board:#60a5fa}.hm-board-teal{--board:#2dd4bf}:root[data-theme=light] .hm-board-blue{--board:#2563eb}:root[data-theme=light] .hm-board-teal{--board:#0f766e}.hm-board-head{align-items:center;display:flex;gap:14px}.hm-board-mark{background:color-mix(in srgb,var(--board) 14%,#0000);border-radius:14px;color:var(--board);display:grid;flex-shrink:0;font-size:22px;font-weight:850;height:48px;place-items:center;width:48px}.hm-board-title{min-width:0}.hm-board-kicker{color:var(--text-subtle);display:block;font-size:11.5px;font-weight:700;letter-spacing:.05em;text-transform:uppercase}.hm-board-name{color:var(--text-main);font-size:24px;font-weight:850;letter-spacing:-.02em;line-height:1.2;margin:2px 0 0}.hm-board-all{align-items:center;color:var(--board);display:inline-flex;font-size:14px;font-weight:700;gap:6px;margin-left:auto;text-decoration:none;white-space:nowrap}.hm-board-all:hover{color:var(--board);text-decoration:underline}.hm-subjects{grid-gap:10px;display:grid;gap:10px;list-style:none;margin:0;padding:0}.hm-subject{--tone:#3b82f6;align-items:center;background:var(--bg-section);border:1px solid var(--border);border-radius:14px;color:var(--text-main);display:flex;gap:14px;padding:12px 14px;text-decoration:none;transition:border-color .15s ease,transform .15s ease}.hm-subject:hover{border-color:var(--tone);color:var(--text-main);transform:translateX(2px)}.hm-subject:focus-visible{outline:2px solid var(--tone);outline-offset:2px}.hm-tone-blue{--tone:#3b82f6}.hm-tone-cyan{--tone:#06b6d4}.hm-tone-violet{--tone:#8b5cf6}.hm-tone-green{--tone:#10b981}.hm-tone-amber{--tone:#f59e0b}.hm-subject-icon{background:color-mix(in srgb,var(--tone) 15%,#0000);border-radius:12px;color:var(--tone);display:grid;flex-shrink:0;height:40px;place-items:center;width:40px}.hm-subject-text{display:flex;flex:1 1;flex-direction:column;gap:2px;min-width:0}.hm-subject-name{font-size:16px;font-weight:800}.hm-subject-code{color:var(--text-subtle);font-size:12px;font-weight:700;letter-spacing:.04em;margin-left:6px}.hm-subject-topics{color:var(--text-muted);font-size:13.5px;line-height:1.4}.hm-subject-go{color:var(--text-subtle);flex-shrink:0;transition:color .15s ease}.hm-subject:hover .hm-subject-go{color:var(--tone)}.hm-steps{grid-gap:32px;display:grid;gap:32px;grid-template-columns:repeat(3,1fr);list-style:none;margin:40px 0 0;padding:0}.hm-step{position:relative}.hm-step-num{background:var(--accent-primary);border-radius:50%;color:#fff;display:inline-grid;font-size:14px;font-weight:800;height:32px;margin-right:10px;place-items:center;width:32px}.hm-step-icon{color:var(--accent-text);vertical-align:middle}.hm-step h3{color:var(--text-main);font-size:18px;font-weight:800;margin:16px 0 6px}.hm-step p{color:var(--text-muted);font-size:15px;line-height:1.55;margin:0}.hm-teachers{grid-gap:48px;align-items:center;display:grid;gap:48px;grid-template-columns:1fr 1fr}.hm-points{grid-gap:12px;display:grid;gap:12px;list-style:none;margin:0;padding:0}.hm-points li{align-items:center;background:var(--bg-card);border:1px solid var(--border);border-radius:14px;color:var(--text-main);display:flex;font-size:15.5px;font-weight:600;gap:14px;padding:16px 18px}.hm-points li svg{color:var(--accent-text);flex-shrink:0}.hm-final{padding-top:24px;text-align:center}.hm-final .hm-h2{margin-bottom:24px}.hm-footer{background:var(--bg-section);border-top:1px solid var(--border);padding:48px 0 32px}.hm-footer-top{display:flex;flex-wrap:wrap;gap:32px;justify-content:space-between}.hm-footer-brand p{color:var(--text-subtle);font-size:14px;margin:12px 0 0}.hm-footer-links{align-items:center;display:flex;flex-wrap:wrap;gap:24px}.hm-footer-links a{color:var(--text-muted);font-size:14.5px;font-weight:600;text-decoration:none}.hm-footer-links a:hover{color:var(--accent-text)}.hm-footer-bottom{border-top:1px solid var(--border);color:var(--text-subtle);display:flex;flex-wrap:wrap;font-size:12.5px;gap:16px;justify-content:space-between;margin-top:32px;padding-top:20px}@media (max-width:960px){.hm-hero{padding:120px 0 32px}.hm-hero-grid,.hm-teachers{gap:40px;grid-template-columns:1fr}.hm-boards,.hm-steps{grid-template-columns:1fr}.hm-steps{gap:28px}}@media (max-width:768px){.hm-hero{padding:28px 0 24px}.hm-mobile-logo{display:flex!important;margin-bottom:28px;width:-webkit-fit-content;width:-moz-fit-content;width:fit-content}.hm-section{padding:64px 0}.hm-wrap{padding:0 16px}}@media (max-width:480px){.hm-board{padding:18px}.hm-board-head{grid-column-gap:14px;grid-row-gap:6px;column-gap:14px;display:grid;grid-template-columns:auto minmax(0,1fr);row-gap:6px}.hm-board-all{grid-column:2;justify-self:start;margin-left:0}.hm-btn{justify-content:center;width:100%}}.executive-login-wrapper{align-items:center;background-color:var(--bg-main);box-sizing:border-box;color:var(--text-main);display:flex;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;justify-content:center;min-height:100vh;overflow:hidden;padding:40px 20px;position:relative;width:100vw}.login-ambient-orb{border-radius:50%;filter:blur(120px);height:500px;opacity:.35;pointer-events:none;position:absolute;width:500px}.orb-primary{background:radial-gradient(circle,var(--accent-primary) 0,#2563eb00 70%);left:20%;top:-100px}.orb-purple{background:radial-gradient(circle,var(--accent-hover) 0,#2e6be600 70%);bottom:-100px;right:20%}.login-toast-alert{align-items:center;background:var(--bg-card);border:1px solid #34d39966;border-radius:50px;box-shadow:0 10px 30px rgba(0,0,0,calc(var(--shadow-k)*.5)),0 0 20px #10b98133;color:var(--fg-emerald-300);display:flex;font-size:13px;font-weight:700;gap:8px;opacity:0;padding:10px 20px;position:fixed;top:24px;transform:translateY(-80px);transition:all .3s cubic-bezier(.16,1,.3,1);z-index:1000}.login-toast-alert.active{opacity:1;transform:translateY(0)}.executive-login-card{backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);background:rgba(var(--glass-900),.82);border:1px solid rgba(var(--hairline),.12);border-radius:24px;box-shadow:0 25px 50px -12px rgba(0,0,0,calc(var(--shadow-k)*.7)),0 0 30px #2563eb1a;box-sizing:border-box;max-width:440px;padding:38px 36px;position:relative;width:100%;z-index:10}.login-brand-header{margin-bottom:28px;text-align:center}.login-brand-pill{align-items:center;background:#0000;border:none;border-radius:12px;display:inline-flex;gap:8px;margin-bottom:18px;padding:5px 8px;text-decoration:none;transition:all .2s ease}.login-brand-pill:hover{background:#0000;transform:translateY(-2px)}.login-brand-icon img{display:block;height:20px;object-fit:contain;width:20px}.login-brand-name{color:var(--text-main);font-size:13.5px;font-weight:800}.login-brand-badge{background:#38bdf826;border:1px solid #38bdf84d;border-radius:4px;color:var(--fg-sky-400);font-size:9.5px;font-weight:800;padding:1px 5px}.login-brand-header h2{color:var(--text-main);font-size:24px;font-weight:850;letter-spacing:-.02em;margin:0 0 6px}.login-brand-header p{color:var(--text-subtle);font-size:13.5px;line-height:1.5;margin:0}.login-error-banner{align-items:center;background:#ef444426;border:1px solid #ef444459;border-radius:12px;color:var(--fg-red-300);display:flex;font-size:12.5px;font-weight:600;gap:8px;margin-bottom:20px;padding:10px 14px}.login-interactive-form{display:flex;flex-direction:column;gap:18px}.login-input-group{display:flex;flex-direction:column;gap:7px}.login-input-group label{color:var(--text-muted);font-size:12.5px;font-weight:700}.password-label-row{align-items:center;display:flex;justify-content:space-between}.forgot-pass-link{color:var(--accent-light);font-size:12px;font-weight:650;text-decoration:none;transition:color .2s ease}.forgot-pass-link:hover{color:var(--fg-blue-300);text-decoration:underline}.input-field-wrapper{align-items:center;display:flex;position:relative}.field-icon{color:var(--text-dim);left:14px;pointer-events:none;position:absolute}.input-field-wrapper input{background:var(--bg-card-header);border:1px solid var(--border-dark);border-radius:12px;box-sizing:border-box;color:var(--text-main);font-size:14px;outline:none;padding:12px 14px 12px 42px;transition:all .2s ease;width:100%}.input-field-wrapper input:focus{background:var(--surface-input);border-color:var(--accent-hover);box-shadow:0 0 0 3px #2563eb40}.input-field-wrapper input::placeholder,.toggle-pass-btn{color:var(--text-dim)}.toggle-pass-btn{align-items:center;background:none;border:none;cursor:pointer;display:flex;justify-content:center;padding:4px;position:absolute;right:12px;transition:color .2s ease}.toggle-pass-btn:hover{color:var(--text-muted)}.login-submit-btn-premium{align-items:center;background:linear-gradient(135deg,var(--accent-primary) 0,var(--accent-active) 100%);border:1px solid rgba(var(--hairline),.18);border-radius:12px;box-shadow:0 4px 16px #2563eb73;color:var(--fixed-50);cursor:pointer;display:flex;font-size:14px;font-weight:750;gap:8px;justify-content:center;margin-top:8px;padding:13px 20px;transition:all .22s ease;width:100%}.login-submit-btn-premium:hover:not(:disabled){background:linear-gradient(135deg,var(--accent-hover) 0,var(--accent-primary) 100%);box-shadow:0 6px 22px #2563eba6;transform:translateY(-2px)}.login-submit-btn-premium:disabled{cursor:not-allowed;opacity:.75}.login-spinner{animation:spin .7s linear infinite;border:2.5px solid rgba(var(--hairline),.3);border-radius:50%;border-top-color:var(--fixed-50);height:18px;width:18px}.login-card-footer{margin-top:24px;text-align:center}.login-card-footer p{color:var(--text-dim);font-size:11.5px;margin:0}.register{background:var(--bg-main);font-family:Inter,sans-serif;font-family:var(--font-body,"Inter",sans-serif);min-height:100vh;padding:3rem 1rem}.register-card{align-items:center;background:var(--bg-ffffff);border-radius:28px;box-shadow:0 20px 50px rgba(0,0,0,calc(var(--shadow-k)*.3));display:flex;flex-direction:column;max-width:520px;padding:3.5rem 3rem;width:100%}.register-logo{margin-bottom:1.5rem}.register-logo img{border-radius:12px;filter:drop-shadow(0 2px 6px rgba(37,99,235,.2));width:220px}.register-title{margin-bottom:2rem;text-align:center}.register-title h2{color:var(--fg-0f172a);font-size:28px;font-weight:800;margin:0 0 .5rem}.school-tag{background:#2563eb1a;border-radius:20px;color:var(--accent-text);display:inline-block;font-size:15px;margin:0;padding:.4rem 1rem}.role-selector-container{display:flex;flex-direction:column;gap:1rem;margin-bottom:2rem;width:100%}.role-card{align-items:center;background:var(--bg-f8fafc);border:2px solid var(--line-e2e8f0);border-radius:20px;cursor:pointer;display:flex;gap:1.25rem;padding:1.25rem 1.5rem;transition:all .25s ease}.role-card:hover{background:var(--bg-eff6ff);border-color:#93c5fd}.role-card.active{background:var(--bg-eff6ff);border-color:var(--accent-primary);box-shadow:0 10px 25px #2563eb26}.role-icon{color:var(--text-subtle);flex-shrink:0;transition:color .25s ease}.role-card.active .role-icon{color:var(--accent-text)}.role-details h4{color:var(--fg-1e293b);font-size:17px;font-weight:700;margin:0 0 .3rem}.role-details p{color:var(--text-dim);font-size:13px;line-height:1.4;margin:0}.register-form{width:100%}.register-form input{background:var(--bg-f8fafc);border:2px solid var(--line-e2e8f0);border-radius:16px;box-sizing:border-box;color:var(--fg-1e293b);display:block;font-size:16px;margin-bottom:1.25rem;padding:1rem 1.25rem;transition:all .2s ease;width:100%}.register-form input:focus{background:var(--bg-ffffff);border-color:var(--accent-primary);box-shadow:0 0 0 4px #2563eb1a;outline:none}::placeholder{color:var(--text-subtle);font-size:15px}.register-btn-container{width:100%}.register-btn{background:linear-gradient(135deg,var(--accent-primary) 0,var(--accent-active) 100%);border-radius:16px;box-shadow:0 10px 25px #2563eb4d;box-sizing:border-box;color:#fff;cursor:pointer;font-size:18px;font-weight:700;margin-top:.5rem;padding:1rem 2rem;text-align:center;transition:all .2s ease;width:100%}.register-btn:hover{background:linear-gradient(135deg,var(--accent-hover) 0,var(--accent-primary) 100%);box-shadow:0 15px 35px #2563eb80;transform:translateY(-2px)}.register-footer{color:var(--text-dim);font-size:15px;margin-top:2.5rem}.register-footer a{color:var(--accent-text);font-weight:700;text-decoration:none}.register-footer a:hover{text-decoration:underline}@media only screen and (max-width:600px){.register-card{padding:2.5rem 1.5rem}.register-title h2{font-size:24px}}.site-loader-container{align-items:center;background-color:var(--bg-main);background-image:radial-gradient(circle at 50% 40%,#2e6be624 0,#0000 60%);display:flex;font-family:-apple-system,BlinkMacSystemFont,Plus Jakarta Sans,Inter,Roboto,sans-serif;height:100vh;inset:0;justify-content:center;overflow:hidden;position:fixed;transition:opacity .3s cubic-bezier(.4,0,.2,1),visibility .3s ease;-webkit-user-select:none;user-select:none;width:100vw;z-index:999999}.site-loader-container.fade-out{opacity:0!important;pointer-events:none!important;visibility:hidden!important}.site-loader-container.embedded{background:#0000;border-radius:16px;height:auto;inset:auto;min-height:480px;position:relative;width:100%;z-index:50}.site-loader-grid-bg{background-image:linear-gradient(to right,rgba(var(--hairline),.035) 1px,#0000 1px),linear-gradient(to bottom,rgba(var(--hairline),.035) 1px,#0000 1px);background-size:40px 40px;inset:0;mask-image:radial-gradient(circle at center,#000 40%,#0000 80%);-webkit-mask-image:radial-gradient(circle at center,#000 40%,#0000 80%);pointer-events:none;position:absolute}.site-loader-content{animation:loaderFadeIn .5s ease-out;flex-direction:column;padding:30px 40px;text-align:center;z-index:10}.site-loader-content,.site-loader-emblem-wrapper{align-items:center;display:flex;position:relative}.site-loader-emblem-wrapper{height:130px;justify-content:center;margin-bottom:24px;width:130px}.site-loader-ring-outer{animation:siteLoaderSpinOuter 2s cubic-bezier(.4,0,.2,1) infinite;border:2px solid #0000;border-radius:50%;border-right:2px solid #2e6be647;border-top:2.5px solid var(--accent-light);box-shadow:0 0 16px #2e6be638;inset:0;position:absolute}.site-loader-ring-mid{animation:siteLoaderSpinInner 3s linear infinite reverse;border:1.5px dashed #2e6be666;border-left:2px solid var(--accent-primary);border-radius:50%;inset:12px;position:absolute}.site-loader-aura{animation:siteLoaderPulseAura 2s ease-in-out infinite alternate;background:radial-gradient(circle,#2e6be642 0,#2e6be61a 50%,#0000 75%);border-radius:50%;height:80px;pointer-events:none;position:absolute;width:80px}.site-loader-logo{animation:siteLoaderLogoFloat 2.4s ease-in-out infinite alternate;filter:drop-shadow(0 2px 8px rgba(46,107,230,.35));height:52px;position:relative;width:52px;z-index:5}.site-loader-brand-title{align-items:center;color:var(--text-main);display:flex;font-size:26px;font-weight:800;gap:3px;letter-spacing:-.02em;margin:0 0 8px}.site-loader-tag-badge{align-items:center;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:var(--sat-light-blue);border:1px solid #2e6be64d;border-radius:9999px;color:var(--accent-text);display:inline-flex;font-size:11px;font-weight:700;gap:6px;letter-spacing:1.5px;margin-bottom:24px;padding:4px 12px;text-transform:uppercase}.site-loader-live-dot{animation:siteLoaderDotBlink 1.4s ease-in-out infinite;background-color:var(--accent-light);border-radius:50%;box-shadow:0 0 6px var(--accent-light);height:6px;width:6px}.site-loader-progress-track{background:rgba(var(--hairline),.1);border-radius:9999px;height:4px;margin-bottom:14px;overflow:hidden;position:relative;width:220px}.site-loader-progress-bar{animation:siteLoaderLaserTrack 1.8s cubic-bezier(.4,0,.2,1) infinite;background:linear-gradient(90deg,#0000,var(--accent-primary) 25%,var(--accent-light) 60%,#0000);border-radius:9999px;height:100%;position:absolute;top:0;width:50%}.site-loader-status-text{animation:siteLoaderTextPulse 2s ease-in-out infinite alternate;color:var(--text-muted);font-size:13.5px;font-weight:600;letter-spacing:.3px;margin:0 0 4px}.site-loader-subtext{color:var(--text-subtle);font-size:12px;font-weight:500;margin:0}@keyframes siteLoaderSpinOuter{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}@keyframes siteLoaderSpinInner{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}@keyframes siteLoaderPulseAura{0%{opacity:.5;transform:scale(.85)}to{opacity:.9;transform:scale(1.15)}}@keyframes siteLoaderLogoFloat{0%{transform:translateY(0) scale(.98)}to{transform:translateY(-3px) scale(1.02)}}@keyframes siteLoaderLaserTrack{0%{left:-50%}to{left:100%}}@keyframes siteLoaderDotBlink{0%,to{opacity:1;transform:scale(1)}50%{opacity:.3;transform:scale(.8)}}@keyframes siteLoaderTextPulse{0%{opacity:.8}to{color:var(--text-main-lighter);opacity:1}}@keyframes loaderFadeIn{0%{opacity:0;transform:translateY(10px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}.subjects-hub-container{margin:0 auto;max-width:1200px;min-height:100vh;padding:110px 2rem 4rem}.subjects-hub-header{margin-bottom:2.5rem;text-align:center}.subjects-hub-badge{align-items:center;background:#2563eb1a;border:1px solid #3b82f633;border-radius:20px;color:var(--accent-text);display:inline-flex;font-size:12px;font-weight:700;gap:6px;margin-bottom:12px;padding:6px 14px}.subjects-hub-title{color:var(--fg-0f172a);color:var(--text-color,var(--fg-0f172a));font-size:2.25rem;font-weight:850;letter-spacing:-.02em;margin-bottom:10px}.subjects-hub-subtitle{color:var(--fg-64748b);font-size:1.05rem;line-height:1.6;margin:0 auto;max-width:680px}.subjects-search-wrapper{margin-bottom:2.5rem;margin-left:auto;margin-right:auto;max-width:580px}.subjects-search-inner{align-items:center;display:flex;position:relative}.search-icon-decor{color:#94a3b8;left:18px;pointer-events:none;position:absolute;z-index:1}.subjects-search-input{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:rgba(var(--glass-900),.85);border:1px solid var(--line-e2e8f0);border-radius:30px;box-shadow:0 4px 12px #0000000a;color:var(--fg-1e293b);font-size:15px;padding:12px 20px 12px 48px;transition:all .2s ease;width:100%}.subjects-search-input:focus{background:var(--bg-ffffff);border-color:#3b82f6;box-shadow:0 0 0 3px #3b82f626;outline:none}.subjects-grid{grid-gap:1.75rem;display:grid;gap:1.75rem;grid-template-columns:repeat(auto-fill,minmax(320px,1fr))}.subject-hub-card{border:1px solid var(--border);border-radius:20px;box-shadow:0 8px 24px #0000000a;display:flex;flex-direction:column;justify-content:space-between;overflow:hidden;padding:24px;position:relative;transition:all .3s cubic-bezier(.16,1,.3,1)}.subject-hub-card:hover{border-color:#3b82f666;box-shadow:0 16px 36px #00000014;transform:translateY(-5px)}.subject-card-top{align-items:center;display:flex;justify-content:space-between;margin-bottom:16px}.subject-emoji-icon{align-items:center;background:rgba(var(--glass-900),.7);border-radius:14px;box-shadow:0 4px 10px #00000008;display:flex;font-size:32px;height:52px;justify-content:center;width:52px}.subject-status-pill{background:rgba(var(--glass-900),.6);border:1px solid;border-radius:20px;font-size:11px;font-weight:700;padding:4px 10px}.subject-card-body{flex-grow:1;margin-bottom:18px}.subject-board-tag{color:var(--fg-64748b);display:block;font-size:11px;font-weight:700;letter-spacing:.05em;margin-bottom:6px;text-transform:uppercase}.subject-card-title{color:var(--fg-0f172a);font-size:19px;font-weight:800;line-height:1.35;margin:0 0 8px}.subject-card-desc{color:var(--fg-64748b);font-size:13px;line-height:1.5;margin:0}.subject-card-main-action{margin-bottom:12px}.subject-select-btn{align-items:center;background:#2563eb;border:none;border-radius:12px;box-shadow:0 3px 10px #2563eb33;color:#fff;cursor:pointer;display:flex;font-size:14px;font-weight:700;gap:8px;justify-content:center;padding:12px 16px;transition:all .2s ease;width:100%}.subject-select-btn:hover{background:#1d4ed8;box-shadow:0 6px 16px #2563eb4d;transform:translateY(-1px)}.subject-card-actions{display:flex;gap:8px}.sub-action-btn{align-items:center;background:rgba(var(--glass-900),.6);border:1px solid var(--line-e2e8f0);border-radius:10px;color:var(--fg-334155);cursor:pointer;display:flex;flex:1 1;font-size:12px;font-weight:600;gap:5px;justify-content:center;padding:8px 10px;text-decoration:none;transition:all .2s ease}.sub-action-btn:hover{background:var(--bg-ffffff);border-color:var(--line-cbd5e1);transform:translateY(-1px)}.topic-action:hover{border-color:#93c5fd;color:var(--fg-2563eb)}.pastpaper-action:hover{border-color:#94a3b8;color:var(--fg-0f172a)}.practice-mode-selection-view{animation:fadeIn .3s ease}.subject-mode-nav-top{align-items:center;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;margin-bottom:24px}.subject-back-btn{align-items:center;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:rgba(var(--glass-900),.8);border:1px solid var(--line-e2e8f0);border-radius:20px;box-shadow:0 2px 8px #00000008;color:var(--fg-2563eb);cursor:pointer;display:inline-flex;font-size:13px;font-weight:700;gap:8px;padding:9px 18px;transition:all .2s ease}.subject-back-btn:hover{background:#2563eb;border-color:#2563eb;box-shadow:0 4px 12px #2563eb33;color:#fff;transform:translateX(-3px)}.subject-breadcrumbs{align-items:center;color:var(--fg-64748b);display:flex;font-size:13px;gap:8px}.crumb-link{background:none;border:0;color:inherit;cursor:pointer;font-weight:600;font:inherit;padding:0;transition:color .15s}.crumb-link:hover{color:var(--fg-2563eb);text-decoration:underline}.crumb-separator{color:#94a3b8}.current-crumb{color:var(--fg-0f172a);font-weight:700}.subject-selected-hero{-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:var(--bg-card);border:1px solid var(--line-e2e8f0);border-radius:24px;box-shadow:0 10px 30px #0000000a;margin-bottom:32px;padding:30px}.subject-hero-left{align-items:flex-start;display:flex;gap:22px}.subject-hero-icon-wrap{align-items:center;background:var(--bg-ffffff);border:1px solid var(--line-e2e8f0);border-radius:20px;box-shadow:0 6px 16px #0000000a;display:flex;flex-shrink:0;height:72px;justify-content:center;width:72px}.subject-hero-emoji{font-size:40px}.subject-hero-info{flex-grow:1}.subject-hero-badge-row{align-items:center;display:flex;flex-wrap:wrap;gap:10px;margin-bottom:8px}.subject-board-badge{background:#2563eb14;border-radius:20px;color:var(--fg-2563eb);display:inline-block;font-size:11px;font-weight:700;letter-spacing:.06em;padding:4px 10px;text-transform:uppercase}.subject-hero-title{color:var(--fg-0f172a);font-size:1.85rem;font-weight:850;letter-spacing:-.02em;margin:0 0 8px}.subject-hero-desc{color:var(--fg-64748b);font-size:14px;line-height:1.6;margin:0;max-width:750px}.practice-modes-section-title{margin-bottom:28px;text-align:center}.practice-modes-section-title h2{color:var(--fg-0f172a);font-size:1.6rem;font-weight:800;margin:0 0 6px}.practice-modes-section-title p{color:var(--fg-64748b);font-size:14px;margin:0}.practice-modes-grid{grid-gap:2rem;display:grid;gap:2rem;grid-template-columns:repeat(3,minmax(0,1fr));margin-bottom:40px}.practice-mode-card{background:var(--bg-ffffff);border:2px solid #0000;border-radius:24px;box-shadow:0 10px 30px #0000000a;display:flex;flex-direction:column;justify-content:space-between;padding:32px;position:relative;transition:all .3s cubic-bezier(.16,1,.3,1)}.mode-topic-card{background:linear-gradient(135deg,#2563eb17,#2563eb00 55%),var(--bg-card);border-color:#2563eb33}.mode-topic-card:hover{border-color:#2563eb;box-shadow:0 20px 40px #2563eb1f;transform:translateY(-6px)}.mode-pastpaper-card{background:linear-gradient(135deg,#64748b1a,#64748b00 55%),var(--bg-card);border-color:#47556933}.mode-pastpaper-card:hover{border-color:var(--line-334155);box-shadow:0 20px 40px #0f172a1f;transform:translateY(-6px)}.mode-worksheet-card{background:linear-gradient(135deg,#05966917,#05966900 55%),var(--bg-card);border-color:#05966933}.mode-worksheet-card:hover{border-color:#059669;box-shadow:0 20px 40px #0596691f;transform:translateY(-6px)}.worksheet-badge{color:var(--fg-15803d)}.worksheet-badge,.worksheet-icon-circle{background:#0596691a}.worksheet-cta-btn{background:#059669;color:#fff}.worksheet-cta-btn:hover{background:#047857;box-shadow:0 8px 20px #0596694d;transform:translateY(-2px)}.mode-card-badge{align-items:center;border-radius:20px;display:inline-flex;font-size:11px;font-weight:700;gap:6px;letter-spacing:.05em;margin-bottom:18px;padding:5px 12px;text-transform:uppercase;width:-webkit-fit-content;width:-moz-fit-content;width:fit-content}.topic-badge{background:#2563eb1a;color:var(--fg-2563eb)}.pastpaper-badge{background:#4755691a;color:var(--fg-334155)}.mode-card-header{align-items:center;display:flex;gap:16px;margin-bottom:16px}.mode-card-icon-circle{align-items:center;border-radius:16px;display:flex;flex-shrink:0;height:56px;justify-content:center;width:56px}.topic-icon-circle{background:#2563eb1a}.pastpaper-icon-circle{background:#64748b24;color:var(--fg-475569)}.mode-card-title{color:var(--fg-0f172a);font-size:1.4rem;font-weight:800;margin:0 0 4px}.mode-card-subtitle{color:var(--fg-64748b);font-size:12px;font-weight:600}.mode-card-description{color:var(--fg-475569);font-size:14px;line-height:1.6;margin-bottom:22px}.mode-card-features{background:var(--bg-f8fafc);border:1px solid var(--line-e2e8f0);border-radius:16px;display:flex;flex-direction:column;gap:12px;margin-bottom:28px;padding:16px}.mode-feature-item{align-items:flex-start;color:var(--fg-334155);display:flex;font-size:13px;gap:10px;line-height:1.45}.mode-card-cta-btn{align-items:center;border-radius:14px;box-shadow:0 4px 14px #00000014;cursor:pointer;display:flex;font-size:15px;font-weight:700;gap:8px;justify-content:center;padding:14px 24px;text-decoration:none;transition:all .2s ease}.topic-cta-btn{background:#2563eb;color:#fff}.topic-cta-btn:hover{background:#1d4ed8;box-shadow:0 8px 20px #2563eb4d;transform:translateY(-2px)}.pastpaper-cta-btn{background:#1e293b;color:#fff}.pastpaper-cta-btn:hover{background:#0f172a;box-shadow:0 8px 20px #0f172a4d;transform:translateY(-2px)}:root:not([data-theme=light]) .pastpaper-cta-btn{background:#475569}:root:not([data-theme=light]) .pastpaper-cta-btn:hover{background:#64748b}.board-tone-blue{--tone:#60a5fa;--tone-strong:#2563eb}.board-tone-teal{--tone:#2dd4bf;--tone-strong:#0f766e}.board-tone-slate{--tone:#94a3b8;--tone-strong:#475569}:root[data-theme=light] .board-tone-blue{--tone:#2563eb}:root[data-theme=light] .board-tone-teal{--tone:#0f766e}:root[data-theme=light] .board-tone-slate{--tone:#475569}.boards-grid{grid-gap:1.75rem;display:grid;gap:1.75rem;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));margin:0 auto;max-width:1000px}.board-hub-card{background:var(--bg-card);border:1px solid var(--border);border-radius:20px;border-top:4px solid var(--tone);box-shadow:0 8px 24px #0000000a;color:var(--text-main);display:flex;flex-direction:column;gap:16px;padding:28px;text-decoration:none;transition:transform .3s cubic-bezier(.16,1,.3,1),box-shadow .3s ease,border-color .3s ease}.board-hub-card:hover{border-color:var(--tone);box-shadow:0 16px 36px #00000014;color:var(--text-main);transform:translateY(-5px)}.board-hub-card:focus-visible{outline:3px solid var(--tone);outline-offset:3px}.board-card-head{align-items:center;display:flex;gap:14px}.board-card-mark{background:color-mix(in srgb,var(--tone) 14%,#0000);border-radius:14px;color:var(--tone);display:grid;flex-shrink:0;font-size:24px;font-weight:850;height:52px;place-items:center;width:52px}.board-card-kicker{color:var(--text-subtle);display:block;font-size:11px;font-weight:700;letter-spacing:.05em;text-transform:uppercase}.board-card-title{color:var(--text-main);display:block;font-size:26px;font-weight:850;letter-spacing:-.02em;line-height:1.2;margin-top:2px}.board-card-desc{color:var(--text-muted);font-size:14px;line-height:1.55}.board-card-subjects{grid-gap:8px;display:grid;gap:8px;list-style:none;margin:0;padding:0}.board-card-subjects li{align-items:center;background:var(--bg-section);border:1px solid var(--border);border-radius:12px;color:var(--text-main);display:flex;font-size:14px;font-weight:700;gap:10px;padding:9px 12px}.board-card-subject-code{color:var(--text-subtle);font-size:12px;font-weight:700;letter-spacing:.04em;margin-left:auto}.board-card-cta{align-items:center;background:var(--tone-strong);border-radius:12px;color:#fff;display:flex;font-size:14px;font-weight:700;gap:8px;justify-content:center;margin-top:auto;padding:12px 16px}.subjects-hub-badge.board-badge{background:color-mix(in srgb,var(--tone) 12%,#0000);border-color:color-mix(in srgb,var(--tone) 35%,#0000);color:var(--tone)}.subjects-hub-empty{color:var(--text-muted);margin:2rem auto;max-width:560px;text-align:center}@media (max-width:1100px){.practice-modes-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:900px){.practice-modes-grid{gap:1.5rem;grid-template-columns:1fr}}@media (max-width:768px){.subjects-hub-container{padding:95px 1.25rem 3rem}.subjects-hub-title{font-size:1.75rem}.boards-grid,.subjects-grid{grid-template-columns:1fr}.board-hub-card{padding:22px}.subject-hero-left{align-items:center;flex-direction:column;text-align:center}.subject-hero-badge-row{justify-content:center}.subject-mode-nav-top{align-items:flex-start;flex-direction:column}}.not-login{height:80vh}.not-login p{line-height:1.5rem;margin-bottom:1rem;width:300px}.not-login p,.not-login-btn{font-size:20px;text-align:center}.not-login-btn{animation:anime 16s linear infinite;background:var(--accent-primary);background-size:600%;border-radius:50px;color:#ffffffe6;padding:.6rem 1.5rem;width:180px}.user-container{padding-bottom:6.5rem}.profile-avataer img{width:150px}.user-name{margin-bottom:1rem;margin-top:.8rem;text-align:center}.user-name h2{margin:0}.user-name p{color:var(--fg-565555);font-size:15px}.user-info{background-color:var(--bg-f8fafc);border-radius:10px;box-shadow:0 4px 4px 0 #0000001a,0 6px 15px 0 rgba(0,0,0,calc(var(--shadow-k)*.19));margin-top:1.5rem;padding:1.3rem 1rem 1.3rem 0;width:350px}.info{border-bottom:1px solid #c3c2c2;color:var(--fg-383737);margin-bottom:.7rem;padding:1rem 0}.info i{margin-right:.5rem}.info i,.info p{font-size:18px}.info:last-child{border:0;margin-bottom:0}.user-btn{animation:anime 16s linear infinite;background:var(--accent-primary);background-size:600%;border-radius:50px;color:#ffffffe6;cursor:pointer;font-size:20px;margin-top:2.5rem;padding:.6rem 1.5rem;text-align:center;width:320px}.user-footer{color:var(--fg-565555);font-size:15px;margin-top:.8rem;text-align:center}.contact-mobile{padding:5.5rem 1rem 6rem}.icon{background-color:var(--accent-primary);border-radius:50%;height:50px;width:50px}.icon i{color:var(--text-main);font-size:20px}.info{margin-left:1rem}.social-link i{cursor:pointer;font-size:25px;margin-left:.5rem;margin-top:.3rem}.social-link i:first-child{margin-left:0}.contact-mobile-btn{animation:anime 16s linear infinite;background:var(--accent-primary);background-size:600%;border-radius:50px;color:#ffffffe6;cursor:pointer;font-size:20px;margin-top:1rem;padding:.6rem;text-align:center;width:100px}.contact-mobile-info{margin-bottom:.5rem}.contact-mobile-form{border:1px solid var(--accent-primary);border-radius:20px;margin-top:1rem;padding:1.5rem 1.8rem;width:90%}.contact-mobile-form input{border:1px solid gray;border-radius:5px;margin-bottom:.8rem;margin-top:.2rem;padding:.5rem 0;width:100%}.last-mobile-input{padding:.8rem 0!important}.contact-mobile-form p{font-size:30px;margin-bottom:1rem}.contact-mobile-container{margin-left:.1rem}.download-app img{cursor:pointer;margin-top:.5rem;width:51%}.install-ios{bottom:100px;position:fixed;transition:.7s}.install-down{bottom:-500px!important}.install-container{background-color:var(--bg-f8fafc);border-radius:15px;margin-right:1rem;padding:1rem;position:relative}.install-container,.install-header img{box-shadow:0 4px 4px 0 #0000001a,0 6px 15px 0 rgba(0,0,0,calc(var(--shadow-k)*.19))}.install-header img{border-radius:18px;margin-bottom:1rem;width:80px}.install-header p{font-weight:700}.install-body p{color:var(--fg-161616);font-size:13px;margin-bottom:.8rem;margin-top:.5rem;text-align:center}.install-footer{border-top:1px solid #afadad;padding-top:.6rem}.install-footer img{margin:0 .3rem;width:20px}.install-footer p{font-size:15px}.close-install{position:absolute;right:15px;top:6px}.close-install p{cursor:pointer;font-size:30px}@media only screen and (max-width:600px){.contact-mobile-form{padding:1.5rem 1.4rem;width:99%}.info{margin-left:.7rem}}.bluebook-modal-overlay{align-items:center;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#0f172abf;bottom:0;display:flex;justify-content:center;left:0;padding:20px;position:fixed;right:0;top:0;z-index:99999}.bluebook-modal-content{animation:modalPop .2s cubic-bezier(.175,.885,.32,1.275);background:#fff;border-radius:16px;box-shadow:0 20px 50px #00000040;display:flex;flex-direction:column;max-height:85vh;max-width:780px;overflow:hidden;width:100%}.bluebook-modal-header{align-items:center;background:#111b38;color:var(--fixed-50);display:flex;justify-content:space-between;padding:16px 24px}.bluebook-modal-title{align-items:center;display:flex;font-size:18px;font-weight:800;gap:10px}.bluebook-modal-close{background:#0000;border:none;color:var(--fixed-50);cursor:pointer;font-size:20px;opacity:.8;transition:opacity .2s ease}.bluebook-modal-close:hover{opacity:1}.bluebook-modal-body{background:var(--fixed-50);flex:1 1;overflow-y:auto;padding:24px}.bluebook-ref-grid{grid-gap:16px;display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));margin-bottom:20px}.ref-card{background:#fff;border:1px solid var(--fixed-300);border-radius:12px;box-shadow:0 2px 8px #00000008;padding:16px}.ref-card h4{border-bottom:2px solid var(--fixed-200);color:#111b38;font-size:14px;font-weight:800;margin:0 0 12px;padding-bottom:6px}.ref-formula-row{align-items:center;border-bottom:1px dashed var(--fixed-100);display:flex;font-size:13.5px;justify-content:space-between;padding:5px 0}.ref-formula-row span{color:#475569;font-weight:600}.ref-formula-row strong{color:var(--fixed-900);font-size:14.5px}.ref-note-box{background:#eff6ff;border:1px solid #bfdbfe;border-radius:10px;color:#1e40af;font-size:13px;line-height:1.5;padding:14px 18px}.bluebook-modal-footer{background:#fff;border-top:1px solid var(--fixed-200);display:flex;justify-content:flex-end;padding:14px 24px}.bluebook-btn-secondary{background:#111b38;border:none;border-radius:8px;color:var(--fixed-50);cursor:pointer;font-size:14px;font-weight:700;padding:10px 24px;transition:background .2s ease}.bluebook-btn-secondary:hover{background:var(--fixed-800)}.bluebook-review-container{background:var(--bg-f8fafc);box-sizing:border-box;display:flex;flex:1 1;flex-direction:column;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Inter,sans-serif;height:100%;min-height:0;overflow:hidden;position:relative;width:100%}.bluebook-review-header{background:var(--bg-ffffff);border-bottom:1px solid var(--line-e2e8f0);flex-shrink:0;padding:1.25rem 2rem 1rem}.bluebook-review-title-wrap{margin:0 auto;max-width:1200px}.bluebook-review-badge{align-items:center;background:var(--bg-eff6ff);border:1px solid var(--line-bfdbfe);border-radius:20px;color:var(--accent-active-text);display:inline-flex;font-size:11.5px;font-weight:700;gap:6px;letter-spacing:.5px;margin-bottom:.4rem;padding:3px 10px;text-transform:uppercase}.bluebook-review-heading{color:var(--fg-0f172a);font-size:1.5rem;font-weight:800;letter-spacing:-.02em;margin:0 0 .4rem}.bluebook-review-subtext{color:var(--fg-475569);font-size:13.5px;line-height:1.5;margin:0 0 1rem;max-width:900px}.bluebook-review-stats-bar{display:flex;flex-wrap:wrap;gap:10px;margin:0 auto;max-width:1200px}.bluebook-stat-pill{align-items:center;background:var(--bg-f1f5f9);border:1px solid var(--line-cbd5e1);border-radius:8px;display:flex;font-size:13px;gap:8px;padding:6px 14px}.bluebook-stat-pill .stat-label{color:var(--fg-475569);font-weight:600}.bluebook-stat-pill .stat-value{background:var(--bg-ffffff);border:1px solid var(--line-e2e8f0);border-radius:6px;color:var(--fg-0f172a);font-size:14px;font-weight:800;padding:2px 8px}.bluebook-stat-pill.answered{background:var(--bg-f0fdf4);border-color:var(--line-86efac)}.bluebook-stat-pill.answered .stat-icon{color:var(--success-text)}.bluebook-stat-pill.answered .stat-label{color:var(--fg-166534)}.bluebook-stat-pill.answered .stat-value{border-color:var(--line-bbf7d0);color:var(--fg-15803d)}.bluebook-stat-pill.unanswered{background:var(--bg-fff1f2);border-color:var(--line-fecdd3)}.bluebook-stat-pill.unanswered .stat-icon{color:var(--fg-e11d48)}.bluebook-stat-pill.unanswered .stat-label{color:var(--fg-9f1239)}.bluebook-stat-pill.unanswered .stat-value{border-color:var(--line-fecdd3);color:var(--fg-be123c)}.bluebook-stat-pill.flagged{background:var(--bg-fefce8);border-color:var(--line-fde047)}.bluebook-stat-pill.flagged .stat-icon{color:#ca8a04}.bluebook-stat-pill.flagged .stat-label{color:var(--fg-854d0e)}.bluebook-stat-pill.flagged .stat-value{border-color:var(--line-fef08a);color:var(--fg-a16207)}.bluebook-review-toolbar{align-items:center;background:var(--bg-ffffff);border-bottom:1px solid var(--line-e2e8f0);display:flex;flex-shrink:0;flex-wrap:wrap;gap:12px;justify-content:space-between;padding:.6rem 2rem}.bluebook-filter-tabs{display:flex;gap:6px;max-width:1200px}.bluebook-filter-tab{background:#0000;border:1px solid #0000;border-radius:6px;color:var(--fg-64748b);cursor:pointer;font-size:13px;font-weight:700;padding:6px 14px;transition:all .15s ease}.bluebook-filter-tab:hover{background:var(--bg-f1f5f9);color:var(--fg-0f172a)}.bluebook-filter-tab.active{background:var(--fixed-900);border-color:var(--fixed-900);color:var(--fixed-50)}.bluebook-review-legend{align-items:center;color:var(--fg-475569);display:flex;font-size:12px;font-weight:600;gap:16px}.legend-item{align-items:center;display:flex;gap:6px}.legend-box{align-items:center;border-radius:3px;display:inline-flex;font-size:9px;height:14px;justify-content:center;width:14px}.legend-box.answered{background:var(--accent-primary);border:1px solid var(--accent-active)}.legend-box.unanswered{background:var(--bg-ffffff);border:1.5px dashed var(--fixed-400)}.legend-box.flagged{color:var(--warning-text);font-size:13px}.bluebook-review-grid-wrap{box-sizing:border-box;flex:1 1;overflow-y:auto;padding:1.5rem 2rem}.bluebook-review-grid{grid-gap:14px;display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));margin:0 auto;max-width:1200px}.bluebook-review-card{align-items:center;background:var(--bg-ffffff);border:1.5px solid var(--line-e2e8f0);border-radius:10px;box-shadow:0 1px 3px #0000000d;cursor:pointer;display:flex;flex-direction:column;gap:6px;justify-content:center;padding:14px 10px 12px;position:relative;transition:all .2s cubic-bezier(.4,0,.2,1);-webkit-user-select:none;user-select:none}.bluebook-review-card:hover{border-color:var(--accent-primary);box-shadow:0 6px 16px #2563eb1f;transform:translateY(-2px)}.bluebook-review-card:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px #2563eb33;outline:none}.bluebook-review-card.is-answered{background:var(--bg-ffffff);border-color:var(--line-cbd5e1)}.bluebook-review-card.is-answered .bluebook-card-num-circle{background:#1e3a8a;border-color:var(--line-1e3a8a);color:var(--fixed-50)}.bluebook-review-card.is-unanswered{background:var(--bg-fafafa);border:1.5px dashed var(--fixed-400)}.bluebook-review-card.is-unanswered .bluebook-card-num-circle{background:var(--bg-ffffff);border:1.5px dashed var(--fixed-400);color:var(--fg-64748b)}.bluebook-card-flag-ribbon{color:var(--warning-text);filter:drop-shadow(0 1px 2px rgba(0,0,0,.15));font-size:16px;position:absolute;right:8px;top:-4px}.bluebook-card-num-circle{align-items:center;border-radius:50%;display:flex;font-size:15px;font-weight:800;height:38px;justify-content:center;transition:all .15s ease;width:38px}.bluebook-card-status{margin-top:2px}.status-badge{align-items:center;border-radius:4px;display:inline-flex;font-size:11px;font-weight:700;gap:4px;padding:2px 6px}.status-badge.answered{background:var(--bg-dcfce7);color:var(--fg-15803d)}.status-badge.unanswered{background:var(--bg-f1f5f9);color:var(--fg-64748b)}.bluebook-card-type{color:var(--fixed-400);font-size:10px;font-weight:700;letter-spacing:.5px;text-transform:uppercase}.bluebook-card-preview{background:var(--bg-f1f5f9);border-radius:4px;color:var(--fg-1e293b);font-size:11px;font-weight:600;max-width:90%;overflow:hidden;padding:2px 6px;text-overflow:ellipsis;white-space:nowrap}.bluebook-card-preview .preview-label{color:var(--fg-64748b);font-weight:500}.bluebook-review-empty{align-items:center;color:var(--fg-64748b);display:flex;flex-direction:column;justify-content:center;padding:3rem 1rem;text-align:center}.bluebook-review-empty i{color:var(--fixed-400);font-size:3rem;margin-bottom:1rem}.bluebook-review-reset-btn{background:var(--fixed-900);border:none;border-radius:6px;color:var(--fixed-50);cursor:pointer;font-weight:700;margin-top:1rem;padding:6px 14px}.bluebook-review-footer{align-items:center;background:var(--bg-ffffff);border-top:1px solid var(--line-cbd5e1);box-sizing:border-box;display:flex;flex-shrink:0;height:54px;justify-content:space-between;padding:0 24px;z-index:100}.bluebook-review-footer-center{color:var(--fg-334155);font-size:13.5px;font-weight:700}.bluebook-footer-btn.primary-submit{align-items:center;background:#16a34a;border:none;border-radius:6px;box-shadow:0 2px 6px #16a34a4d;color:var(--fixed-50);cursor:pointer;display:inline-flex;font-size:14px;font-weight:800;gap:8px;padding:8px 22px;transition:all .2s ease}.bluebook-footer-btn.primary-submit:hover:not(:disabled){background:#15803d;box-shadow:0 4px 10px #16a34a66;transform:translateY(-1px)}.bluebook-footer-btn.primary-submit:disabled{cursor:not-allowed;opacity:.7}.bluebook-confirm-overlay{align-items:center;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);background:#0f172aa6;display:flex;inset:0;justify-content:center;padding:1rem;position:fixed;z-index:9999}.bluebook-confirm-modal{animation:modalPop .2s cubic-bezier(.34,1.3,.64,1);background:var(--bg-ffffff);border-radius:14px;box-shadow:0 20px 40px rgba(0,0,0,calc(var(--shadow-k)*.2));max-width:440px;padding:1.75rem;text-align:center;width:100%}.bluebook-confirm-icon{align-items:center;background:var(--bg-fef2f2);border-radius:50%;color:var(--fg-dc2626);display:flex;font-size:1.5rem;height:52px;justify-content:center;margin:0 auto 1rem;width:52px}.bluebook-confirm-title{color:var(--fg-0f172a);font-size:1.25rem;font-weight:800;margin:0 0 .5rem}.bluebook-confirm-text{color:var(--fg-475569);font-size:14px;line-height:1.5;margin:0 0 1.5rem}.bluebook-confirm-actions{display:flex;gap:10px;justify-content:center}.bluebook-confirm-btn{border:none;border-radius:8px;cursor:pointer;font-size:13.5px;font-weight:700;padding:9px 18px;transition:all .15s ease}.bluebook-confirm-btn.secondary{background:var(--bg-f1f5f9);border:1px solid var(--line-cbd5e1);color:var(--fg-334155)}.bluebook-confirm-btn.secondary:hover{background:var(--bg-e2e8f0)}.bluebook-confirm-btn.danger{background:#dc2626;color:var(--fixed-50)}.bluebook-confirm-btn.danger:hover{background:#b91c1c}@media (max-width:640px){.bluebook-review-header{padding:1rem}.bluebook-review-heading{font-size:1.25rem}.bluebook-review-toolbar{padding:.5rem 1rem}.bluebook-review-grid-wrap{padding:1rem}.bluebook-review-grid{gap:8px;grid-template-columns:repeat(auto-fill,minmax(90px,1fr))}.bluebook-review-footer{padding:0 12px}.bluebook-review-footer-center{display:none}}.casio-body{background:linear-gradient(180deg,#2c2d30,#232427 55%,#1d1e20);border:1px solid #0b0b0c;border-radius:20px;box-shadow:0 18px 40px #00000073,inset 0 0 0 2px #3a3b3f,inset 0 1px 0 3px #ffffff0a;box-sizing:border-box;color:#f4f4f5;cursor:grab;font-family:Arial,Helvetica,sans-serif;padding:12px 12px 14px;position:relative;-webkit-user-select:none;user-select:none;width:284px}.casio-body button{cursor:pointer;font-family:inherit}.casio-head{display:flex;gap:10px;justify-content:space-between;margin-bottom:8px}.casio-logo{color:#e8e9ea;font-size:15px;font-weight:700;letter-spacing:.8px}.casio-model{color:#d4d4d8;font-size:9.5px;font-weight:700;margin-top:3px}.casio-vpam{color:#c4c4c8;font-size:7.5px;font-style:italic;font-weight:700;letter-spacing:.4px}.casio-solar{align-items:flex-end;display:flex;flex-direction:column;width:112px}.casio-solar-cell{background:linear-gradient(135deg,#3b2220,#2a1513);border:1px solid #111;border-radius:2px;height:28px;width:100%}.casio-edition{color:#c4c4c8;font-size:7.5px;margin-top:3px}.casio-lcd{background:linear-gradient(180deg,#dbe2df,#d3dbd7);border:2px solid #0e0f10;border-radius:3px;box-shadow:inset 0 1px 3px #00000059;box-sizing:border-box;color:#17191a;cursor:text;height:100px;margin-bottom:9px;overflow:hidden;padding:3px 7px 4px}.casio-lcd.is-off .casio-screen,.casio-lcd.is-off .casio-status{visibility:hidden}.casio-status{align-items:center;display:flex;font-size:8px;font-weight:700;gap:4px;height:11px;line-height:11px}.casio-status span{visibility:hidden}.casio-status span.on{visibility:visible}.casio-status .boxed{border:1px solid #17191a;border-radius:1px;font-size:7.5px;line-height:9px;padding:0 2px}.casio-status-gap{flex:1 1}.casio-screen{display:flex;flex-direction:column;height:80px;justify-content:space-between;overflow:hidden;position:relative}.casio-input-wrap{min-height:0;width:100%}.casio-input{--caret-color:#17191a;--selection-background-color:#17191a2e;--selection-color:#17191a;--contains-highlight-background-color:#0000;--primary-color:#17191a;background:#0000;border:none;color:#17191a;display:block;font-size:16px;min-height:30px;outline:none;padding:0;width:100%}.casio-input:focus,.casio-input:focus-within{box-shadow:none;outline:none}.casio-input::part(container){padding:0}.casio-input::part(content){padding:0}.casio-output{display:block;font-size:17px;line-height:1.1;margin-top:auto;overflow:hidden;text-align:right;white-space:nowrap}.casio-output .katex{font-size:1em}.casio-output-pair{font-size:13px;line-height:1.25;margin-top:auto;text-align:right}.casio-output-pair>span{display:block}.casio-error{background:#d7dfdb;display:flex;flex-direction:column;font-size:15px;font-weight:700;inset:0;justify-content:center;position:absolute;text-align:center}.casio-error-hint{font-size:9.5px;font-weight:400;margin-top:4px}.casio-notice{font-size:13px;font-weight:700;margin:auto}.casio-menu{grid-gap:1px 8px;align-content:center;display:grid;gap:1px 8px;grid-template-columns:1fr 1fr;height:100%}.casio-menu.wide{grid-template-columns:1fr}.casio-menu-title{font-size:14px;font-weight:700;grid-column:1/-1;margin:auto 0}.casio-menu-item{background:none;border:none;color:#17191a;font-size:11.5px;font-weight:700;line-height:15px;padding:0;text-align:left}.casio-menu.wide .casio-menu-item{font-size:11px;line-height:14px}.casio-menu-item:hover{text-decoration:underline}.casio-prompt{align-items:baseline;display:flex;flex-wrap:wrap;font-size:12px;gap:2px 6px;line-height:15px}.casio-prompt-title{flex-basis:100%;font-size:11.5px;overflow:hidden;white-space:nowrap}.casio-prompt-hint{font-size:9.5px;margin-left:auto}.casio-page{display:flex;flex-direction:column;font-size:15px;height:100%}.casio-table{font-size:11px;line-height:14px}.casio-table-row{display:grid;grid-template-columns:1fr 1.6fr;padding:0 3px;white-space:nowrap}.casio-table-row>*{overflow:hidden;text-align:right}.casio-table-row.head{border-bottom:1px solid #17191a;font-weight:700}.casio-table-row.current{background:#17191a;color:#d7dfdb}.casio-top-keys{grid-gap:4px;align-items:start;display:grid;gap:4px;grid-template-columns:1fr 74px 1fr}.casio-round-row,.casio-small-row{grid-gap:5px;display:grid;gap:5px;grid-template-columns:1fr 1fr}.casio-small-row{margin-top:3px}.casio-round{align-items:center;display:flex;flex-direction:column}.casio-round-label{font-size:7.5px;font-weight:700;height:11px;line-height:11px;white-space:nowrap}.casio-round-label.tone-gold,.legend-shift{color:#e9b949}.casio-round-label.tone-red,.legend-alpha{color:#f0666b}.legend-blue{color:#58b0ea}.casio-round-btn{background:radial-gradient(circle at 45% 35%,#9a9ca0 0,#6f7175 62%,#55575a 100%);border:1px solid #111;border-radius:50%;box-shadow:0 2px 2px #00000080;height:22px;padding:0;width:22px}.casio-round-btn:active{box-shadow:0 1px 1px #00000080;transform:translateY(1px)}.casio-round-btn.active{background:radial-gradient(circle at 45% 35%,#f3cf72 0,#c99a2e 100%)}.casio-dpad{background:radial-gradient(circle,#2b2c2f 0,#17181a 72%,#101112 100%);border-radius:50%;box-shadow:inset 0 1px 2px #ffffff14,0 1px 3px #0009;height:72px;margin:2px auto 0;position:relative;width:72px}.casio-dpad button{background:linear-gradient(145deg,#a9abae,#76787b);border:1px solid #1a1b1d;box-shadow:0 1px 2px #0000008c;height:24px;padding:0;position:absolute;width:24px}.casio-dpad button:active{background:linear-gradient(145deg,#8f9194,#636568)}.casio-dpad .dpad-up{border-radius:7px 7px 3px 3px;left:24px;top:2px}.casio-dpad .dpad-down{border-radius:3px 3px 7px 7px;bottom:2px;left:24px}.casio-dpad .dpad-left{border-radius:7px 3px 3px 7px;left:2px;top:24px}.casio-dpad .dpad-right{border-radius:3px 7px 7px 3px;right:2px;top:24px}.casio-dpad button:after{align-items:center;color:#26272a;display:flex;font-size:8px;inset:0;justify-content:center;position:absolute}.casio-dpad .dpad-up:after{content:"▲"}.casio-dpad .dpad-down:after{content:"▼"}.casio-dpad .dpad-left:after{content:"◀"}.casio-dpad .dpad-right:after{content:"▶"}.dpad-label{color:#9a9ca0;font-size:4.5px;font-weight:700;left:50%;letter-spacing:.2px;pointer-events:none;position:absolute;top:50%;transform:translate(-50%,-50%)}.casio-fn-grid{grid-gap:1px 4px;display:grid;gap:1px 4px;grid-template-columns:repeat(6,1fr);margin:2px 0 7px}.casio-key{display:flex;flex-direction:column;min-width:0}.casio-legend{align-items:flex-end;display:flex;font-size:6.8px;font-weight:700;gap:2px;height:10px;justify-content:space-between;line-height:10px;overflow:hidden;white-space:nowrap}.casio-key-num .casio-legend{gap:4px;justify-content:center}.casio-btn{align-items:center;border:1px solid #0d0e0f;box-shadow:0 2px 2px #00000080,inset 0 1px 0 #ffffff1f;color:#fff;display:flex;justify-content:center;padding:0;width:100%}.casio-btn:active{box-shadow:0 1px 1px #00000080,inset 0 1px 0 #ffffff14;transform:translateY(1px)}.casio-key-fn .casio-btn{background:linear-gradient(180deg,#3f4043,#28292b);border-radius:4px;font-size:10.5px;font-weight:700;height:21px}.casio-key-fn .casio-btn:hover{background:linear-gradient(180deg,#4a4b4f,#303134)}.casio-key-math{align-items:baseline;display:inline-flex;font-family:Times New Roman,Times,serif;font-size:12px}.casio-key-math i{font-style:italic}.casio-key-math sub,.casio-key-math sup{font-size:8px;line-height:0}.key-dms{font-size:11px;letter-spacing:-.5px}.key-word{font-size:13px}.key-slot{border:1px solid;display:inline-block;height:7px;margin-left:1px;width:6px}.key-slot.small{height:5px;width:4px}.key-fraction{align-items:center;display:inline-flex;flex-direction:column;gap:1px}.key-fraction .key-slot{height:5px;margin:0;width:6px}.key-bar{background:currentColor;height:1px;width:10px}.casio-num-grid{grid-gap:1px 5px;display:grid;gap:1px 5px;grid-template-columns:repeat(5,1fr)}.casio-key-num .casio-btn{background:linear-gradient(180deg,#8d8f92,#717376 55%,#5f6164);border-radius:6px;font-size:16px;font-weight:700;height:28px}.casio-key-num .casio-btn:hover{background:linear-gradient(180deg,#97999c,#7b7d80 55%,#68696d)}.casio-key-num .casio-btn.tone-green{background:linear-gradient(180deg,#a5cc4a,#86b02f 60%,#739a25);font-size:13px}.casio-key-num .casio-btn.tone-green:hover{background:linear-gradient(180deg,#afd655,#8fba38 60%,#7ca42c)}.casio-key-num .casio-key-math{font-family:Arial,Helvetica,sans-serif;font-size:11.5px}.casio-key-num .casio-key-math sup{font-size:8.5px}.bluebook-calc-overlay-window{animation:casio-pop-in .18s cubic-bezier(.16,1,.3,1);position:fixed;touch-action:none;transform-origin:top left;-webkit-user-select:none;user-select:none;z-index:999999}@keyframes casio-pop-in{0%{margin-top:-8px;opacity:0}to{margin-top:0;opacity:1}}.bluebook-calc-overlay-window.is-dragging .casio-body{cursor:grabbing}.casio-window-controls{display:flex;gap:3px;position:absolute;right:-9px;top:-9px;z-index:2}.casio-window-controls .casio-win-btn{background:#fff;border:1px solid #cbd5e1;border-radius:50%;box-shadow:0 1px 4px #00000040;color:#334155;height:22px;width:22px}.casio-win-btn{align-items:center;cursor:pointer;display:flex;font-size:11px;justify-content:center;padding:0;transition:background .15s ease,color .15s ease}.casio-window-controls .casio-win-btn:hover{background:#e2e8f0;color:#0f172a}.btn-pill-close:hover,.casio-window-controls .win-btn-close:hover{background:#e81123!important;color:#fff!important}.casio-minimized-pill{align-items:center;background:#1e293b;border:1px solid #475569;border-radius:20px;box-shadow:0 10px 25px #0006;cursor:grab;display:flex;gap:8px;padding:4px 6px 4px 12px;position:fixed;-webkit-user-select:none;user-select:none;z-index:999999}.casio-minimized-pill:active{cursor:grabbing}.pill-icon{color:#cbd5e1;font-size:13px}.pill-title{color:#f8fafc;cursor:pointer;font-size:12px;font-weight:700}.pill-title:hover{color:#38bdf8}.btn-pill-close,.btn-pill-expand{background:#0000;border:none;border-radius:12px;color:#cbd5e1;font-size:10px;height:24px;width:24px}.btn-pill-expand:hover{background:#334155;color:#fff}.all-questions-list{display:flex;flex-direction:column;flex-shrink:0;margin:0 auto;max-width:760px;width:100%}.question-clean .all-questions-list{max-width:720px}.all-questions-card{border-bottom:1.5px solid #cbd5e1;border-bottom:1.5px solid var(--line-cbd5e1,#cbd5e1);border-radius:0;cursor:pointer;outline:none;padding:18px 14px 16px;position:relative;text-align:left;transition:background-color .15s ease}.all-questions-card:hover{background:#f8fafc;background:var(--bg-f8fafc,#f8fafc)}.all-questions-card:focus-visible{border-radius:6px;box-shadow:inset 0 0 0 2px #2563eb;box-shadow:inset 0 0 0 2px var(--fg-2563eb,#2563eb)}.all-questions-list.after-open .all-questions-card:first-child{border-top:1.5px solid #cbd5e1;border-top:1.5px solid var(--line-cbd5e1,#cbd5e1)}.all-questions-card-head{align-items:center;display:flex;flex-wrap:wrap;gap:8px 12px;margin-bottom:10px}.all-questions-card-number{color:#0f172a;color:var(--fg-0f172a,#0f172a);font-size:17px;font-weight:700}.all-questions-status{background:#f1f5f9;background:var(--bg-f1f5f9,#f1f5f9);border-radius:999px;color:#64748b;color:var(--fg-64748b,#64748b);font-size:12.5px;font-weight:600;padding:2px 10px}.all-questions-status.done{background:#d1fae5;color:#047857}.all-questions-score{color:#334155;color:var(--fg-334155,#334155);font-size:13px;font-weight:600}.all-questions-flag{align-items:center;color:#b45309;display:inline-flex;font-size:12.5px;font-weight:600;gap:5px}.all-questions-card-body{max-height:420px;overflow:hidden;pointer-events:none;position:relative}.all-questions-card-body.clipped{-webkit-mask-image:linear-gradient(180deg,#000 80%,#0000);mask-image:linear-gradient(180deg,#000 80%,#0000)}.all-questions-card .question-html-clean{background:#0000!important}.all-questions-card-picture{border-radius:8px;display:block;margin:0 auto 10px;max-height:220px;max-width:100%}.all-questions-muted{color:#64748b;color:var(--fg-64748b,#64748b);font-style:italic;margin:0}.all-questions-choices{display:flex;flex-direction:column;gap:6px;list-style:none;margin:10px 0 0;padding:0}.all-questions-choices li{align-items:center;border:1px solid #e2e8f0;border:1px solid var(--line-e2e8f0,#e2e8f0);border-radius:8px;display:flex;gap:10px;padding:6px 10px}.all-questions-choices li.selected{background:#eff6ff;background:var(--bg-eff6ff,#eff6ff);border-color:#2563eb;border-color:var(--fg-2563eb,#2563eb)}.all-questions-choice-letter{align-items:center;border:1.5px solid #334155;border:1.5px solid var(--line-334155,#334155);border-radius:50%;display:inline-flex;flex-shrink:0;font-size:12px;font-weight:700;height:24px;justify-content:center;width:24px}.all-questions-choices li.selected .all-questions-choice-letter{background:#2563eb;background:var(--fg-2563eb,#2563eb);border-color:#2563eb;border-color:var(--fg-2563eb,#2563eb);color:#fff}.all-questions-card-foot{align-items:center;display:flex;flex-wrap:wrap;gap:8px 16px;justify-content:space-between;margin-top:12px}.all-questions-answer{color:#334155;color:var(--fg-334155,#334155);font-size:14px;min-width:0;overflow-wrap:anywhere}.all-questions-open{align-items:center;color:#2563eb;color:var(--fg-2563eb,#2563eb);display:inline-flex;font-size:14px;font-weight:600;gap:6px;margin-left:auto}.bluebook-question-inner-wrap.all-questions-open-question{border:2px solid #2563eb;border:2px solid var(--fg-2563eb,#2563eb);border-radius:12px;box-sizing:border-box;flex-shrink:0;margin-bottom:14px;margin-top:14px;padding:16px 16px 20px;scroll-margin-top:12px}.all-questions-toggle{align-items:center;display:inline-flex!important;gap:6px;white-space:nowrap}@media (max-width:640px){.all-questions-card{padding:14px 4px}.all-questions-card-body{max-height:320px}.bluebook-question-inner-wrap.all-questions-open-question{padding:12px 10px 16px}.all-questions-flag-text,.all-questions-toggle-text{display:none}}.pdf-noter-overlay{align-items:center;animation:noterFadeIn .2s ease-out;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#0a0f1de0;bottom:0;display:flex;flex-direction:column;justify-content:center;left:0;padding:16px;position:fixed;right:0;top:0;z-index:99999}@keyframes noterFadeIn{0%{opacity:0;transform:scale(.98)}to{opacity:1;transform:scale(1)}}.pdf-noter-container{background:var(--fixed-900);border:1px solid var(--fixed-700);border-radius:16px;box-shadow:0 25px 60px -15px #000000b3,0 0 0 1px #ffffff0d;display:flex;flex-direction:column;height:92vh;max-width:1100px;overflow:hidden;width:95vw}.pdf-noter-header{align-items:center;background:var(--fixed-800);border-bottom:1px solid var(--fixed-700);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;padding:10px 18px}.pdf-noter-title-box{align-items:center;display:flex;gap:10px}.pdf-noter-title{align-items:center;color:var(--fixed-50);display:flex;font-size:15px;font-weight:750;gap:8px;margin:0}.pdf-noter-badge{background:#1e3a8a;border-radius:6px;color:#93c5fd;font-size:11px;font-weight:700;padding:2px 8px}.pdf-noter-toolbar{align-items:center;display:flex;flex-wrap:wrap;gap:8px}.pdf-tool-group{background:var(--fixed-900);border:1px solid var(--fixed-700);border-radius:8px;gap:2px;padding:2px}.pdf-tool-btn,.pdf-tool-group{align-items:center;display:flex}.pdf-tool-btn{background:#0000;border:none;border-radius:6px;color:var(--fixed-400);cursor:pointer;font-size:12px;font-weight:600;gap:5px;padding:6px 10px;transition:all .15s ease}.pdf-tool-btn:hover{background:var(--fixed-800);color:var(--fixed-50)}.pdf-tool-btn.active{background:var(--accent-primary);box-shadow:0 1px 4px #2563eb66;color:var(--fixed-50)}.pdf-color-swatches{align-items:center;display:flex;gap:5px;padding:0 4px}.pdf-color-dot{border:2px solid #0000;border-radius:50%;cursor:pointer;height:20px;transition:transform .15s ease,border-color .15s ease;width:20px}.pdf-color-dot:hover{transform:scale(1.2)}.pdf-color-dot.active{border-color:var(--fixed-50);box-shadow:0 0 6px #ffffff80;transform:scale(1.25)}.pdf-color-native-input{background:#0000;border:none;border-radius:50%;cursor:pointer;height:22px;padding:0;width:22px}.pdf-width-btn{align-items:center;background:#0000;border:none;border-radius:4px;color:var(--fixed-400);cursor:pointer;display:flex;font-size:11px;font-weight:700;justify-content:center;padding:4px 8px}.pdf-width-btn.active{background:var(--fixed-700);color:#38bdf8}.pdf-noter-body{background:#fff;color:var(--fixed-900);flex:1 1;overflow-y:auto;position:relative}.pdf-noter-workspace{background:#fff;box-sizing:border-box;min-height:850px;padding:30px 40px 100px;position:relative;-webkit-user-select:none;user-select:none;width:100%}.pdf-noter-question-content{pointer-events:none}.pdf-noter-q-header{align-items:center;border-bottom:2px solid var(--fixed-200);display:flex;justify-content:space-between;margin-bottom:16px;padding-bottom:10px}.pdf-noter-q-num{align-items:center;color:#1e3a8a;display:flex;font-size:16px;font-weight:800;gap:8px}.pdf-noter-q-text{color:var(--fixed-900);font-size:15px;line-height:1.7;margin-bottom:16px;overflow:visible!important;overflow-wrap:break-word;word-break:break-word}.pdf-noter-q-text .katex,.pdf-noter-q-text span.katex{overflow:visible!important}.pdf-noter-q-pic{margin:16px 0;text-align:center}.pdf-noter-q-pic img{border:1px solid var(--fixed-300);border-radius:8px;max-height:320px;max-width:90%}.pdf-noter-choices-grid{grid-gap:10px;display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));margin-top:14px}.pdf-noter-choice-card{align-items:flex-start;background:var(--fixed-50);border:1.5px solid var(--fixed-300);border-radius:8px;color:var(--fixed-800);display:flex;font-size:13.5px;gap:10px;padding:8px 12px}.pdf-noter-choice-letter{align-items:center;background:#e0e7ff;border-radius:50%;color:var(--accent-primary);display:flex;flex-shrink:0;font-size:12px;font-weight:800;height:22px;justify-content:center;width:22px}.pdf-noter-whiteboard-area{align-items:center;background:var(--fixed-50);border:2px dashed var(--fixed-400);border-radius:12px;box-sizing:border-box;display:flex;flex-direction:column;justify-content:flex-start;margin-top:24px;min-height:440px;padding:16px}.pdf-noter-whiteboard-guide{align-items:center;border-bottom:1px dashed var(--fixed-300);color:var(--fixed-500);display:flex;font-size:13px;font-weight:600;gap:8px;justify-content:center;margin-bottom:12px;padding-bottom:10px;width:100%}.pdf-drawing-canvas,.pdf-drawing-canvas.tool-pen{cursor:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='32' height='32'%3E%3Cdefs%3E%3Cfilter id='a' x='-20%25' y='-20%25' width='140%25' height='140%25'%3E%3CfeDropShadow dx='1' dy='1' stdDeviation='.8' flood-color='rgba(0,0,0,0.6)'/%3E%3C/filter%3E%3C/defs%3E%3Cg filter='url(%23a)'%3E%3Cpath d='M25.5 3.5C27 5 27 7.5 25.5 9l-13 13L4 28l6-8.5 13-13c1-1 1.5-2 2.5-3Z' fill='%230f172a' stroke='%23fff' stroke-width='1.5' stroke-linejoin='round'/%3E%3Cpath fill='%2338bdf8' d='m4 28 2-6 4 4z'/%3E%3Cpath stroke='%2338bdf8' stroke-width='1.5' d='m11 18 4 4'/%3E%3Ccircle cx='3' cy='29' r='1.2' stroke='%23fff' stroke-width='.6'/%3E%3C/g%3E%3C/svg%3E") 3 29,crosshair!important;height:100%;left:0;position:absolute;top:0;touch-action:none;width:100%;z-index:10}.pdf-drawing-canvas.tool-eraser{cursor:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='28' height='28'%3E%3Cdefs%3E%3Cfilter id='a' x='-20%25' y='-20%25' width='140%25' height='140%25'%3E%3CfeDropShadow dx='1' dy='1' stdDeviation='.8' flood-color='rgba(0,0,0,0.5)'/%3E%3C/filter%3E%3C/defs%3E%3Cg filter='url(%23a)' stroke='%23fff'%3E%3Cpath d='m18 4 6 6-14 14H4v-6L18 4Z' fill='%23f43f5e' stroke-width='1.5' stroke-linejoin='round'/%3E%3Cpath d='m8 20-4 4h6l4-4Z' fill='%23cbd5e1'/%3E%3C/g%3E%3C/svg%3E") 4 24,cell!important}.pdf-drawing-canvas.tool-arrow,.pdf-drawing-canvas.tool-circle,.pdf-drawing-canvas.tool-line,.pdf-drawing-canvas.tool-rect{cursor:crosshair}.pdf-noter-footer{align-items:center;background:var(--fixed-800);border-top:1px solid var(--fixed-700);display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;padding:12px 20px}.pdf-footer-btn{align-items:center;border:none;border-radius:8px;cursor:pointer;display:inline-flex;font-size:13px;font-weight:700;gap:8px;padding:8px 16px;transition:all .15s ease}.pdf-footer-btn-primary{background:linear-gradient(135deg,#10b981,#059669);box-shadow:0 2px 8px #10b9814d;color:var(--fixed-50)}.pdf-footer-btn-primary:hover{background:linear-gradient(135deg,#059669,#047857)}.pdf-footer-btn-screenshot{background:linear-gradient(135deg,#0284c7,#0369a1);box-shadow:0 2px 8px #0284c759;color:var(--fixed-50)}.pdf-footer-btn-screenshot:hover{background:linear-gradient(135deg,#0369a1,#075985)}.pdf-footer-btn-secondary{background:var(--fixed-700);color:var(--fixed-100)}.pdf-footer-btn-secondary:hover{background:#475569}.pdf-footer-btn-amber{background:linear-gradient(135deg,#f59e0b,#d97706);box-shadow:0 2px 8px #f59e0b4d;color:var(--fixed-50)}.notes-box-modal{align-items:center;animation:noterFadeIn .2s ease-out;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#0a0f1dd9;bottom:0;display:flex;justify-content:center;left:0;padding:16px;position:fixed;right:0;top:0;z-index:100000}.notes-box-content{background:var(--fixed-900);border:1px solid var(--fixed-700);border-radius:16px;box-shadow:0 25px 50px -12px #000000b3;display:flex;flex-direction:column;max-height:88vh;max-width:850px;overflow:hidden;width:90vw}.notes-box-header{align-items:center;background:var(--fixed-800);border-bottom:1px solid var(--fixed-700);display:flex;justify-content:space-between;padding:14px 20px}.notes-box-grid{grid-gap:16px;display:grid;gap:16px;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));max-height:55vh;overflow-y:auto;padding:18px 20px}.notes-box-card{background:var(--fixed-800);border:1px solid var(--fixed-700);border-radius:12px;display:flex;flex-direction:column;overflow:hidden;transition:transform .15s ease,border-color .15s ease}.notes-box-card:hover{border-color:var(--accent-hover);transform:translateY(-2px)}.notes-box-thumb{background:#fff;border-bottom:1px solid var(--fixed-700);height:140px;object-fit:cover;width:100%}.notes-box-info{padding:10px 12px}.notes-box-footer,.notes-box-info{align-items:center;display:flex;justify-content:space-between}.notes-box-footer{background:var(--fixed-800);border-top:1px solid var(--fixed-700);flex-wrap:wrap;gap:10px;padding:14px 20px}.whatsapp-share-btn{background:#25d366!important;box-shadow:0 2px 10px #25d36659!important;color:var(--fixed-50)!important}.whatsapp-share-btn:hover{background:#1da851!important}.ai-scan-overlay{animation:ai-scan-fade-in .35s ease-out both;inset:0;overflow:hidden;pointer-events:none;position:fixed;z-index:9000}.ai-scan-tint{animation:ai-scan-glow 2.4s ease-in-out infinite;background:#3b82f608;box-shadow:inset 0 0 70px 6px #3b82f638;inset:0;position:absolute}.ai-scan-beam{animation:ai-scan-sweep 2.4s cubic-bezier(.45,0,.55,1) infinite alternate;background:linear-gradient(180deg,#3b82f600 0,#3b82f61a 35%,#63b3ff47 48%,#bae6fda6 50%,#63b3ff47 52%,#3b82f61a 65%,#3b82f600);height:140px;left:0;margin-top:-70px;position:absolute;right:0;top:0;will-change:transform}.ai-scan-beam:after{background:linear-gradient(90deg,#38bdf800,#38bdf8f2 20%,#fff 50%,#38bdf8f2 80%,#38bdf800);box-shadow:0 0 12px 2px #38bdf8bf,0 0 28px 6px #3b82f659;content:"";height:2px;left:0;margin-top:-1px;position:absolute;right:0;top:50%}@keyframes ai-scan-sweep{0%{transform:translateY(0)}to{transform:translateY(100vh)}}@keyframes ai-scan-glow{0%,to{opacity:.65}50%{opacity:1}}@keyframes ai-scan-fade-in{0%{opacity:0}to{opacity:1}}[data-theme=dark] .ai-scan-tint{box-shadow:inset 0 0 80px 8px #60a5fa4d}@media (prefers-reduced-motion:reduce){.ai-scan-beam{display:none}.ai-scan-tint{animation:none;opacity:.8}}.geometry-instruments-container{z-index:25}.geo-layer,.geometry-instruments-container{inset:0;pointer-events:none;position:absolute}.geo-layer{height:100%;overflow:visible;touch-action:none;-webkit-user-select:none;user-select:none;width:100%}.geo-layer text{font-family:Segoe UI,Roboto,Arial,sans-serif}.geo-layer text,.geo-scale{pointer-events:none}.geo-tick{stroke:#1e293b;stroke-width:.9}.geo-tick-major{stroke:#0f172a;stroke-width:1.3}.geo-number{fill:#0f172a;font-size:11px;font-weight:600}.geo-number-small{font-size:10px;letter-spacing:-.2px}.geo-number-inner{fill:#dc2626;font-size:9px;font-weight:600}.geo-unit{fill:#475569;font-size:10px;font-weight:600}.geo-arm-knob,.geo-close,.geo-handle,.geo-mark-btn{cursor:pointer;pointer-events:all}.geo-handle circle{fill:#fff;stroke:#2563eb;stroke-width:2;filter:drop-shadow(0 1px 2px rgba(15,23,42,.25))}.geo-handle{cursor:grab}.geo-icon{fill:none;stroke:#2563eb;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;pointer-events:none}.geo-close circle{fill:#fff;stroke:#cbd5e1;stroke-width:1.2}.geo-close .geo-icon{stroke:#64748b}.geo-close:hover circle{fill:#fef2f2;stroke:#fca5a5}.geo-close:hover .geo-icon{stroke:#dc2626}.geo-reading{fill:#0f172a;opacity:.9;pointer-events:none}.geo-reading-text{fill:#fff;font-size:13px;font-weight:700}.geo-reading-inner{fill:#fca5a5;font-size:12px;font-weight:700}.geo-ruler-body{fill:#f8fafcc7;stroke:#0f172a8c;stroke-width:1.2;cursor:move;filter:drop-shadow(0 2px 4px rgba(15,23,42,.18));pointer-events:all}.geo-protractor-body{fill:#dbeafe80;stroke:#1e3a8abf;stroke-width:1.4;cursor:move;filter:drop-shadow(0 2px 4px rgba(15,23,42,.16));pointer-events:all}.geo-baseline{stroke:#0f172a;stroke-width:1.2}.geo-guide{fill:none;stroke:#1e3a8a73;stroke-width:1}.geo-centre{fill:none;stroke:#dc2626;stroke-width:1.4}.geo-centre-cross{stroke:#dc2626;stroke-width:1.2}.geo-arm{stroke:#dc2626;stroke-width:1.6;stroke-dasharray:5 3;pointer-events:none}.geo-arm-knob circle{fill:#dc2626;stroke:#fff;stroke-width:2.5;filter:drop-shadow(0 1px 2px rgba(15,23,42,.3))}.geo-arm-knob{cursor:grab}.geo-mark-btn rect{fill:#fff}.geo-layer .geo-mark-btn text{fill:#0f172a;font-size:11.5px;font-weight:700}.geo-mark-btn:hover rect{fill:#dbeafe}.geo-compass-handle,.geo-compass-needle,.geo-compass-pencil{pointer-events:all}.geo-compass-needle{cursor:move}.geo-compass-pencil{cursor:ew-resize}.geo-compass-handle{cursor:grab}.geo-leg-hit{stroke:#0000;stroke-width:22;stroke-linecap:round}.geo-tip-hit{fill:#0000}.geo-leg-outline{stroke:#334155;stroke-width:10;stroke-linecap:round}.geo-leg{stroke:#cbd5e1;stroke-width:6.5;stroke-linecap:round}.geo-needle{stroke:#334155;stroke-width:2;stroke-linecap:round}.geo-pencil-wood{stroke:#f59e0b;stroke-width:7}.geo-grip-stem{stroke:#334155;stroke-width:6;stroke-linecap:round}.geo-grip{fill:#475569;stroke:#1e293b;stroke-width:1.5}.geo-compass-handle:hover .geo-grip{fill:#2563eb}.geo-hinge{fill:#1e293b}.geo-hinge-pin{fill:#e2e8f0}.geo-compass-guide{stroke:#2563eb73;stroke-width:1;stroke-dasharray:4 4}.geo-compass-guide,.geo-snap{fill:none;pointer-events:none}.geo-snap{stroke:#16a34a;stroke-width:2}.geo-dragging,.geo-dragging *{cursor:grabbing!important}:is(.exam-working-canvas-wrap,.qdraw-host) .geometry-instruments-container .geo-hint{background:#0f172adb;border-radius:8px;bottom:10px;color:#fff!important;font-family:Segoe UI,Roboto,Arial,sans-serif;font-size:12.5px!important;left:10px;line-height:1.4!important;max-width:calc(100% - 20px);padding:6px 10px;pointer-events:none;position:absolute}.exam-working-area-container{background:#fff;border:1.5px solid #cbd5e1;border-radius:8px;box-shadow:0 1px 3px #0000000a;margin:14px 0 10px;overflow:hidden;width:100%}.exam-working-toolbar{align-items:center;background:#f8fafc;border-bottom:1px solid #e2e8f0;display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;padding:6px 12px}.working-toolbar-left{align-items:center;display:flex;gap:6px}.working-label{align-items:center;color:#64748b!important;display:inline-flex;font-size:11px!important;font-weight:600!important;gap:5px;letter-spacing:.2px!important;text-transform:none!important}.working-ai-hint,.working-label{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif!important}.working-ai-hint{background:#eff6ff!important;border:1px solid #dbeafe!important;border-radius:3px!important;color:#3b82f6!important;font-size:10px!important;font-weight:500!important;padding:1px 5px!important}.working-ai-check{background:#f8fafc;background:var(--bg-f8fafc,#f8fafc);border-top:1px solid #e2e8f0;border-top:1px solid var(--line-e2e8f0,#e2e8f0);padding:8px 12px}.working-ai-check .working-ai-check-btn{background:#2563eb;border:none;border-radius:6px;color:#fff!important;cursor:pointer;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif!important;font-size:14px!important;font-weight:700!important;padding:8px 14px}.working-ai-check-btn:hover:not(:disabled){background:#1d4ed8}.working-ai-check-btn:disabled{cursor:not-allowed;opacity:.55}.working-ai-check .working-ai-status{color:#475569!important;color:var(--fg-475569,#475569)!important;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif!important;font-size:13px!important;line-height:1.5!important;margin:6px 0 0}.working-ai-check .working-ai-status.working-ai-error{color:#dc2626!important;font-weight:600!important}.ai-working-marks{background:#fff;background:var(--bg-ffffff,#fff);border:1px solid #e2e8f0;border:1px solid var(--line-e2e8f0,#e2e8f0);border-left:4px solid #2563eb;border-radius:6px;margin-top:8px;padding:10px 12px;text-align:left}.ai-working-marks-head{align-items:center;display:flex;flex-wrap:wrap;font-size:13px;gap:8px;justify-content:space-between}.ai-working-marks .ai-working-marks-score{color:#1d4ed8!important;color:var(--fg-1d4ed8,#1d4ed8)!important;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif!important;font-size:20px!important;font-weight:800!important;line-height:1.3!important}.ai-working-marks-full{border-left-color:#16a34a}.ai-working-marks.ai-working-marks-full .ai-working-marks-score{color:#16a34a!important}.ai-working-marks-some{border-left-color:#d97706}.ai-working-marks.ai-working-marks-some .ai-working-marks-score{color:#d97706!important}.ai-working-marks-none{border-left-color:#dc2626}.ai-working-marks.ai-working-marks-none .ai-working-marks-score{color:#dc2626!important}.ai-working-marks .ai-working-marks-feedback,.ai-working-marks .ai-working-marks-line{color:#334155!important;color:var(--fg-334155,#334155)!important;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif!important;font-size:14px!important;line-height:1.5!important;margin:6px 0 0}.ai-working-marks .ai-working-marks-feedback{font-weight:600!important}.ai-working-marks .ai-working-marks-line .ai-mark-yes{color:#16a34a!important;font-family:inherit!important;font-size:14px!important;font-weight:700!important}.ai-working-marks .ai-working-marks-line .ai-mark-no{color:#dc2626!important;font-family:inherit!important;font-size:14px!important;font-weight:700!important}.ai-working-marks .ai-working-marks-note{color:#64748b!important;color:var(--fg-64748b,#64748b)!important;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif!important;font-size:11px!important;line-height:1.4!important;margin:8px 0 0}.working-fullscreen-btn{background:#eff6ff;border:1px solid #bfdbfe;border-radius:5px;color:#2563eb;cursor:pointer;font-size:11.5px;font-weight:600;padding:4px 8px}.working-fullscreen-btn:hover{background:#dbeafe}.exam-working-canvas-wrap{background-color:#fbfcfd;background-image:radial-gradient(#cbd5e1 1.2px,#0000 0);background-size:18px 18px;cursor:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none'%3E%3Cpath d='M19.07 4.93a2 2 0 0 0-2.83 0L4.5 16.67 3 21l4.33-1.5L19.07 7.76a2 2 0 0 0 0-2.83z' fill='%232563eb' stroke='%23fff' stroke-width='1.5' stroke-linejoin='round'/%3E%3Cpath fill='%230f172a' d='m3 21 1.5-4.33 2.83 2.83z'/%3E%3Ccircle cx='3' cy='21' r='1.2' fill='%23fff'/%3E%3Ccircle cx='3' cy='21' r='.6' fill='%23000'/%3E%3C/svg%3E") 3 21,auto;height:180px;overflow:hidden;position:relative;touch-action:none;width:100%}.exam-working-canvas-wrap.paper-graph{background-color:#fff;background-image:linear-gradient(#2563eb52 1px,#0000 0),linear-gradient(90deg,#2563eb52 1px,#0000 0),linear-gradient(#2563eb1f 1px,#0000 0),linear-gradient(90deg,#2563eb1f 1px,#0000 0);background-size:37.8px 37.8px,37.8px 37.8px,7.56px 7.56px,7.56px 7.56px}.exam-working-canvas-wrap.paper-plain{background-color:#fff;background-image:none}.exam-working-canvas-wrap.tool-pen,.exam-working-canvas-wrap.tool-pen canvas,.exam-working-canvas-wrap.tool-smartpen,.exam-working-canvas-wrap.tool-smartpen canvas{cursor:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none'%3E%3Cpath d='M19.07 4.93a2 2 0 0 0-2.83 0L4.5 16.67 3 21l4.33-1.5L19.07 7.76a2 2 0 0 0 0-2.83z' fill='%232563eb' stroke='%23fff' stroke-width='1.5' stroke-linejoin='round'/%3E%3Cpath fill='%230f172a' d='m3 21 1.5-4.33 2.83 2.83z'/%3E%3Ccircle cx='3' cy='21' r='1.2' fill='%23fff'/%3E%3Ccircle cx='3' cy='21' r='.6' fill='%23000'/%3E%3C/svg%3E") 3 21,auto}.exam-working-canvas-wrap.tool-eraser,.exam-working-canvas-wrap.tool-eraser canvas{cursor:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' fill='none'%3E%3Crect x='3' y='4' width='14' height='12' rx='2' fill='%23fb7185' stroke='%23fff' stroke-width='1.5'/%3E%3Crect x='3' y='10' width='14' height='6' rx='1' fill='%23fff'/%3E%3Cpath stroke='%23cbd5e1' d='M3 10h14'/%3E%3C/svg%3E") 4 15,auto}.exam-working-canvas-wrap.tool-arrow,.exam-working-canvas-wrap.tool-arrow canvas,.exam-working-canvas-wrap.tool-circle,.exam-working-canvas-wrap.tool-circle canvas,.exam-working-canvas-wrap.tool-line,.exam-working-canvas-wrap.tool-line canvas,.exam-working-canvas-wrap.tool-rect,.exam-working-canvas-wrap.tool-rect canvas{cursor:crosshair}.exam-working-canvas-wrap.tool-text,.exam-working-canvas-wrap.tool-text canvas{cursor:text}.exam-working-canvas{display:block;height:100%;touch-action:none;width:100%}.working-watermark-hint{color:#94a3b8;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:13px;font-style:italic;left:14px;opacity:.6;pointer-events:none;position:absolute;top:10px;-webkit-user-select:none;user-select:none}.exam-working-area-container.collapsed{border-color:#e2e8f0;box-shadow:none;margin:6px 0 10px}.exam-working-area-container.collapsed .exam-working-toolbar{border-bottom:none;padding:6px 12px}.working-collapse-btn,.working-expand-btn{align-items:center;background:#fff;border:1px solid #cbd5e1;border-radius:5px;color:#334155;cursor:pointer;display:inline-flex;font-size:11px;font-weight:700;justify-content:center;padding:3px 10px;transition:all .12s ease}.working-collapse-btn:hover,.working-expand-btn:hover{background:#f1f5f9;border-color:#94a3b8;color:#0f172a}.working-resize-handle{align-items:center;background:#f8fafc;border-top:1px solid #e2e8f0;cursor:ns-resize;display:flex;height:14px;justify-content:center;touch-action:none;transition:background .15s ease;-webkit-user-select:none;user-select:none;width:100%}.working-resize-handle:active,.working-resize-handle:hover{background:#e2e8f0}.resize-handle-bar{background:#cbd5e1;border-radius:4px;height:4px;transition:all .15s ease;width:42px}.working-resize-handle:active .resize-handle-bar,.working-resize-handle:hover .resize-handle-bar{background:#475569;width:56px}.exam-working-canvas-wrap .exam-working-canvas{position:relative}.working-snip-picture{display:block;pointer-events:none;position:absolute;-webkit-user-select:none;user-select:none}.working-snip-remove{align-items:center;background:#fff;border:1px solid #cbd5e1;border-radius:50%;color:#475569;cursor:pointer;display:flex;font-size:11px;height:22px;justify-content:center;padding:0;position:absolute;width:22px;z-index:3}.working-snip-remove:hover{background:#f1f5f9;color:#0f172a}.working-snip-overlay{background:#0f172a38;cursor:crosshair;overflow:hidden;position:fixed;touch-action:none;-webkit-user-select:none;user-select:none;z-index:10050}.working-snip-overlay.has-area{background:#0000}.working-snip-area{border:2px dashed #2563eb;box-shadow:0 0 0 9999px #0f172a38;position:absolute}.working-snip-hint{align-items:center;background:#fff;border-radius:10px;box-shadow:0 6px 20px #0f172a2e;color:#1e293b;cursor:default;display:flex;font-family:sans-serif;font-family:var(--font-body,sans-serif);font-size:14px;font-weight:500;gap:12px;left:50%;max-width:calc(100% - 24px);padding:8px 8px 8px 16px;position:absolute;top:12px;transform:translateX(-50%);white-space:nowrap}.working-snip-hint span{overflow:hidden;text-overflow:ellipsis}.working-snip-hint button{background:#f1f5f9;border:none;border-radius:7px;color:#1e293b;cursor:pointer;flex-shrink:0;font-family:inherit;font-size:13px;font-weight:500;padding:5px 12px}.working-snip-hint button:hover{background:#e2e8f0}.ai-working-marks-score svg{vertical-align:-3px}@media (max-width:640px){.working-snip-hint{white-space:normal;width:calc(100% - 24px)}}.ai-working-marks .ai-voice-feedback{margin-top:8px}.ai-working-marks .ai-voice-feedback-button{align-items:center;background:#eff6ff;background:var(--bg-eff6ff,#eff6ff);border:1px solid #bfdbfe;border:1px solid var(--line-bfdbfe,#bfdbfe);border-radius:999px;color:#1d4ed8;color:var(--fg-1d4ed8,#1d4ed8);cursor:pointer;display:inline-flex;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif!important;font-size:14px!important;font-weight:700!important;gap:6px;min-height:36px;padding:6px 14px}.ai-working-marks .ai-voice-feedback-button:hover{background:#dbeafe;background:var(--bg-dbeafe,#dbeafe)}.ai-working-marks .ai-voice-feedback-button:focus-visible{outline:2px solid #2563eb;outline-offset:2px}.ai-working-marks .ai-voice-feedback-loading{cursor:progress}.ai-working-marks .ai-voice-feedback-text{color:#334155!important;color:var(--fg-334155,#334155)!important;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif!important;font-size:14px!important;line-height:1.5!important;margin:6px 0 0}.ai-voice-spin{animation:ai-voice-spin .9s linear infinite}@keyframes ai-voice-spin{to{transform:rotate(1turn)}}@media (prefers-reduced-motion:reduce){.ai-voice-spin{animation:none}}.exam-working-area-container .working-paper-switch{align-items:center;display:flex;flex-wrap:wrap;gap:6px;padding:6px 2px}.exam-working-area-container .working-paper-label{color:#64748b;color:var(--fg-64748b,#64748b);font-size:13px;font-weight:600;margin-right:2px}.exam-working-area-container .working-paper-option{align-items:center;background:#0000;border:1px solid #0000;border-radius:999px;color:#475569;color:var(--fg-475569,#475569);cursor:pointer;display:inline-flex;font-family:inherit;font-size:13px;font-weight:600;gap:6px;padding:3px 10px 3px 4px}.exam-working-area-container .working-paper-option:hover{background:#f8fafc;background:var(--bg-f8fafc,#f8fafc)}.exam-working-area-container .working-paper-option.active{background:#eff6ff;border-color:#bfdbfe;color:#1d4ed8}.exam-working-area-container .working-paper-option .wk-paper-sample{border-radius:999px;height:16px;width:22px}.wk-bar{align-items:stretch;background:#fff;border:1px solid #e2e8f0;border-radius:10px;box-shadow:0 1px 3px #0f172a14,0 4px 12px #0f172a0d;cursor:grab;display:flex;flex-wrap:wrap;font-family:Segoe UI,Roboto,Arial,sans-serif;gap:2px;padding:4px;touch-action:none;user-select:none;-webkit-user-select:none}.wk-bar.wk-floating{border-color:#cbd5e1;box-shadow:0 4px 10px #0f172a1f,0 14px 34px #0f172a2e;box-sizing:border-box;max-width:calc(100vw - 16px);position:fixed;z-index:9500}.wk-bar.wk-collapsed{display:inline-flex}.wk-bar.wk-dragging{cursor:grabbing;opacity:.94}.wk-bar.wk-dragging .wk-btn{pointer-events:none}html.wk-bar-dragging,html.wk-bar-dragging *{cursor:grabbing!important}.wk-grip{align-items:center;border-radius:6px;display:inline-flex;justify-content:center;margin-right:2px;width:18px}:is(.exam-working-area-container,.qdraw-host,.wk-float-layer) .wk-bar .wk-grip,:is(.exam-working-area-container,.qdraw-host,.wk-float-layer) .wk-bar .wk-grip *{color:#94a3b8!important}.wk-grip:hover{background:#f1f5f9}.wk-menus-up .wk-menu{bottom:calc(100% + 6px);top:auto}.wk-dock-slot{align-items:center;background:#fff;border:1px dashed #cbd5e1;border-radius:8px;cursor:pointer;display:inline-flex;font-family:Segoe UI,Roboto,Arial,sans-serif;gap:6px;padding:5px 10px}.wk-dock-slot:hover{background:#eff6ff;border-color:#93c5fd}:is(.exam-working-area-container,.qdraw-host) .wk-dock-slot,:is(.exam-working-area-container,.qdraw-host) .wk-dock-slot *{color:#475569!important;font-size:12px!important;font-weight:500!important;line-height:1.2!important}.wk-group{align-items:stretch;display:flex;gap:2px}.wk-group+.wk-group{border-left:1px solid #e2e8f0;margin-left:2px;padding-left:4px}.wk-btn{align-items:center;background:#0000;border:none;border-radius:8px;cursor:pointer;display:inline-flex;flex-direction:column;font-family:inherit;gap:3px;height:52px;justify-content:center;min-width:50px;padding:4px 4px 3px;transition:background .12s ease}:is(.exam-working-area-container,.qdraw-host,.wk-float-layer) .wk-bar .wk-btn,:is(.exam-working-area-container,.qdraw-host,.wk-float-layer) .wk-bar .wk-btn *{color:#334155!important}.wk-btn:hover:not(:disabled){background:#f1f5f9}.wk-btn:focus-visible,.wk-menu-item:focus-visible,.wk-swatch:focus-visible,.wk-width:focus-visible{outline:2px solid #2563eb;outline-offset:1px}.wk-btn.active{background:#eff6ff}:is(.exam-working-area-container,.qdraw-host,.wk-float-layer) .wk-bar .wk-btn.active,:is(.exam-working-area-container,.qdraw-host,.wk-float-layer) .wk-bar .wk-btn.active *{color:#2563eb!important}.wk-btn:disabled{cursor:not-allowed;opacity:.38}:is(.exam-working-area-container,.qdraw-host,.wk-float-layer) .wk-bar .wk-btn.wk-danger:hover:not(:disabled),:is(.exam-working-area-container,.qdraw-host,.wk-float-layer) .wk-bar .wk-btn.wk-danger:hover:not(:disabled) *{color:#dc2626!important}.wk-btn.wk-danger:hover:not(:disabled){background:#fef2f2}.wk-btn-icon{align-items:center;display:inline-flex;height:22px;justify-content:center;position:relative}.wk-caret{bottom:0;position:absolute;right:-13px}:is(.exam-working-area-container,.qdraw-host,.wk-float-layer) .wk-btn .wk-btn-label{font-size:11px!important;font-weight:500!important;line-height:1.1!important;white-space:nowrap}.wk-format-icon{display:inline-flex;position:relative}.wk-format-swatch{border:1.5px solid #fff;border-radius:50%;bottom:-2px;height:9px;position:absolute;right:-3px;width:9px}.wk-done-group{margin-left:auto}.wk-btn.wk-done{background:#2563eb}.wk-btn.wk-done:hover:not(:disabled){background:#1d4ed8}:is(.exam-working-area-container,.qdraw-host,.wk-float-layer) .wk-bar .wk-btn.wk-done,:is(.exam-working-area-container,.qdraw-host,.wk-float-layer) .wk-bar .wk-btn.wk-done *{color:#fff!important}.wk-menu-anchor{display:flex;position:relative}.wk-menu{background:#fff;border:1px solid #e2e8f0;border-radius:10px;box-shadow:0 10px 28px #0f172a29;left:0;padding:8px;position:absolute;top:calc(100% + 6px);z-index:60}.wk-draw-menu{grid-gap:4px;display:grid;gap:4px;grid-template-columns:repeat(3,76px)}.wk-menu-item{align-items:center;background:#0000;border:none;border-radius:8px;cursor:pointer;display:flex;flex-direction:column;font-family:inherit;gap:4px;padding:8px 4px 6px}.wk-menu-item:hover{background:#f1f5f9}.wk-menu-item.active{background:#eff6ff}:is(.exam-working-area-container,.qdraw-host,.wk-float-layer) .wk-menu .wk-menu-item,:is(.exam-working-area-container,.qdraw-host,.wk-float-layer) .wk-menu .wk-menu-item *{color:#334155!important}:is(.exam-working-area-container,.qdraw-host,.wk-float-layer) .wk-menu .wk-menu-item.active,:is(.exam-working-area-container,.qdraw-host,.wk-float-layer) .wk-menu .wk-menu-item.active *{color:#2563eb!important}:is(.exam-working-area-container,.qdraw-host,.wk-float-layer) .wk-menu .wk-menu-item span{font-size:11.5px!important;font-weight:500!important;line-height:1.2!important}.wk-format-menu{width:176px}:is(.exam-working-area-container,.qdraw-host,.wk-float-layer) .wk-menu .wk-menu-title{color:#64748b!important;font-size:11px!important;font-weight:600!important;letter-spacing:.04em;line-height:1.2!important;margin:2px 2px 6px;text-transform:uppercase}.wk-swatches{display:flex;gap:8px;margin:0 2px 12px}.wk-swatch{border:3px solid #fff;border-radius:50%;box-shadow:0 0 0 1px #cbd5e1;cursor:pointer;height:28px;padding:0;width:28px}.wk-swatch.active{box-shadow:0 0 0 2px #2563eb}.wk-widths{display:flex;flex-direction:column;gap:2px}.wk-width{align-items:center;background:#0000;border:none;border-radius:6px;cursor:pointer;display:flex;height:28px;padding:0 10px}.wk-width span{border-radius:4px;display:block;width:100%}.wk-width:hover{background:#f1f5f9}.wk-width.active{background:#eff6ff;box-shadow:inset 0 0 0 1px #bfdbfe}:is(.exam-working-area-container,.qdraw-host,.wk-float-layer) .wk-menu .wk-menu-title-gap{margin-top:12px}.wk-papers{grid-gap:6px;display:grid;gap:6px;grid-template-columns:repeat(3,1fr)}.wk-paper{align-items:center;background:#0000;border:none;border-radius:6px;cursor:pointer;display:flex;flex-direction:column;font-family:inherit;gap:4px;padding:4px}.wk-paper:hover{background:#f1f5f9}.wk-paper.active{background:#eff6ff;box-shadow:inset 0 0 0 1px #bfdbfe}.wk-paper-sample{background-color:#fff;border:1px solid #cbd5e1;border-radius:4px;display:block;height:28px;width:40px}.wk-paper-sample.paper-dots{background-image:radial-gradient(#94a3b8 1px,#0000 0);background-size:7px 7px}.wk-paper-sample.paper-graph{background-image:linear-gradient(#2563eb73 1px,#0000 0),linear-gradient(90deg,#2563eb73 1px,#0000 0),linear-gradient(#2563eb26 1px,#0000 0),linear-gradient(90deg,#2563eb26 1px,#0000 0);background-size:14px 14px,14px 14px,3.5px 3.5px,3.5px 3.5px}:is(.exam-working-area-container,.qdraw-host,.wk-float-layer) .wk-menu .wk-paper-name{color:#334155!important;font-size:11px!important;font-weight:500!important;line-height:1.2!important}.exam-working-area-container .exam-working-canvas-wrap .working-text-input,.qdraw-host .qdraw-text-layer .working-text-input{background:#ffffffe6;border:1px dashed #93c5fd;border-radius:3px;color:#0f172a!important;color:var(--wk-text-color,#0f172a)!important;font-family:Segoe UI,Roboto,Arial,sans-serif!important;line-height:1.3!important;margin:0;min-width:120px;outline:none;overflow:hidden;padding:0 2px;position:absolute;resize:none;white-space:pre;z-index:30}@media (max-width:640px){.wk-btn{height:48px;min-width:46px;padding:4px 3px 3px}:is(.exam-working-area-container,.qdraw-host,.wk-float-layer) .wk-btn .wk-btn-label{font-size:10px!important}.wk-group{display:contents}}.qdraw-host{position:relative}.qdraw-host.qdraw-host-column{display:flex;flex-direction:column;gap:6px}.qdraw-canvas{left:0;top:0;z-index:20}.qdraw-canvas,.qdraw-text-layer{pointer-events:none;position:absolute}.qdraw-text-layer{inset:0;z-index:30}.qdraw-text-layer .working-text-input{pointer-events:auto}.qdraw-bar-dock{background:#fffffff7;border-bottom:1px solid #e2e8f0;margin:0 -6px 12px;padding:6px 6px 4px;position:-webkit-sticky;position:sticky;top:0;z-index:40}.qdraw-host .qdraw-bar-dock .qdraw-note{color:#475569!important;font-family:Segoe UI,Roboto,Arial,sans-serif!important;font-size:12.5px!important;line-height:1.4!important;margin:6px 4px 0}.qdraw-active [data-draw-block]{cursor:crosshair;touch-action:none;user-select:none;-webkit-user-select:none}.qdraw-active.qdraw-tool-pen [data-draw-block],.qdraw-active.qdraw-tool-smartpen [data-draw-block]{cursor:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none'%3E%3Cpath d='M19.07 4.93a2 2 0 0 0-2.83 0L4.5 16.67 3 21l4.33-1.5L19.07 7.76a2 2 0 0 0 0-2.83z' fill='%232563eb' stroke='%23fff' stroke-width='1.5' stroke-linejoin='round'/%3E%3Cpath fill='%230f172a' d='m3 21 1.5-4.33 2.83 2.83z'/%3E%3C/svg%3E") 3 21,crosshair}.qdraw-active.qdraw-tool-text [data-draw-block]{cursor:text}.qdraw-active.qdraw-tool-eraser [data-draw-block]{cursor:url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' fill='none'%3E%3Crect x='3' y='4' width='14' height='12' rx='2' fill='%23fb7185' stroke='%23fff' stroke-width='1.5'/%3E%3Crect x='3' y='10' width='14' height='6' rx='1' fill='%23fff'/%3E%3C/svg%3E") 4 15,auto}.qdraw-active [data-draw-block]{border-radius:2px;outline:1px dashed #2563eb59;outline-offset:6px}.qdraw-host>.geometry-instruments-container .geo-hint.geo-hint{bottom:84px;left:50%;max-width:min(560px,calc(100vw - 32px));position:fixed;transform:translateX(-50%);z-index:60}.question-draw-btn{align-items:center;background:#fff;border:1px solid #cbd5e1;border-radius:8px;color:#1e293b;cursor:pointer;display:inline-flex;font-family:inherit;font-size:13.5px;font-weight:500;gap:6px;height:34px;padding:0 12px;white-space:nowrap}.question-draw-btn:hover{background:#f1f5f9}.question-draw-btn.active{background:#2563eb;border-color:#2563eb;color:#fff}.question-draw-btn svg{flex-shrink:0}@media (max-width:640px){.question-draw-btn .question-draw-label-long{display:none}}.ms-overlay{background:#0f172a99;color-scheme:light;display:flex;inset:0;justify-content:center;overflow-y:auto;padding:24px 16px;position:fixed;z-index:100500}.ms-sheet{background:#fff;border-radius:4px;box-shadow:0 20px 50px #0f172a4d;color:#000;font-family:Arial,Helvetica Neue,Helvetica,sans-serif;height:-webkit-fit-content;height:-moz-fit-content;height:fit-content;padding:32px 36px 24px;width:min(1080px,100%)}.ms-sheet *{box-sizing:border-box}.ms-head{align-items:flex-end;border-bottom:3px solid #000;display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;padding-bottom:14px}.ms-sheet .ms-kicker{color:#1d4ed8;font-size:12px;font-weight:700;letter-spacing:.08em;margin:0 0 4px;text-transform:uppercase}.ms-sheet .ms-title{color:#000;font-size:22px;font-weight:700;line-height:1.25;margin:0}.ms-sheet .ms-sub{color:#475569;font-size:13px;margin:6px 0 0}.ms-total{align-items:baseline;display:flex;gap:8px}.ms-total-big{font-size:40px;font-weight:700;line-height:1}.ms-total-of{color:#334155;font-size:15px}.ms-total-pct{background:#000;border-radius:3px;color:#fff;font-size:15px;font-weight:700;padding:3px 10px}.ms-stats{border-bottom:1px solid #cbd5e1;color:#334155;display:flex;flex-wrap:wrap;font-size:14px;gap:8px 28px;padding:12px 0}.ms-stats strong{color:#000}.ms-sheet .ms-key{color:#334155;font-size:12.5px;line-height:1.8;margin:12px 0 14px}.ms-table-wrap{overflow-x:auto;width:100%}.ms-table{border-collapse:collapse;font-size:14px;line-height:1.45;width:100%}.ms-table th{background:#d9d9d9;font-size:13.5px;font-weight:700;text-align:left;vertical-align:bottom}.ms-table td,.ms-table th{border:1px solid #000;padding:8px 10px}.ms-table td{vertical-align:top}.ms-table td.ms-q,.ms-table th:first-child{white-space:nowrap;width:72px}.ms-table th:nth-child(3){width:15%}.ms-table td.ms-mark,.ms-table th:nth-child(4){text-align:center;width:76px}.ms-table th:nth-child(5){width:27%}.ms-q strong{font-size:15px}.ms-part{font-weight:700;margin-left:4px}.ms-html,.ms-html p{color:#000;font-family:inherit;font-size:14px;margin:0;overflow-wrap:anywhere}.ms-html .katex{font-size:1.05em}.ms-html svg{height:auto;max-width:100%}.ms-muted{color:#64748b}.ms-mark strong{display:block;font-size:15px}.ms-mark-codes{color:#334155;display:block;font-size:12px;margin-top:2px}.ms-you-top{align-items:center;display:flex;flex-wrap:wrap;gap:6px 10px;justify-content:space-between}.ms-your-answer{align-items:center;border-radius:3px;display:inline-flex;gap:6px;padding:2px 8px}.ms-your-answer.right{background:#dcfce7}.ms-your-answer.wrong{background:#fee2e2}.ms-tick{font-weight:700}.ms-your-answer.right .ms-tick{color:#15803d}.ms-your-answer.wrong .ms-tick{color:#b91c1c}.ms-score-pill{border:1px solid;border-radius:10px;display:inline-block;font-size:12.5px;font-weight:700;padding:1px 8px;white-space:nowrap}.ms-score-pill.full{background:#f0fdf4;border-color:#86efac;color:#15803d}.ms-score-pill.some{background:#fffbeb;border-color:#fcd34d;color:#b45309}.ms-score-pill.none{background:#fef2f2;border-color:#fca5a5;color:#b91c1c}.ms-ai{margin-top:8px}.ms-codes{display:flex;flex-wrap:wrap;gap:4px}.ms-code{border-radius:3px;display:inline-block;font-size:12px;font-weight:700;line-height:20px;padding:0 6px}.ms-code.yes{background:#dcfce7;color:#15803d}.ms-code.no{background:#fee2e2;color:#b91c1c}.ms-sheet .ms-ai-note{color:#334155;font-size:12.5px;line-height:1.45;margin:6px 0 0}.ms-total-row td{background:#f8fafc;padding:6px 10px;text-align:right}.ms-total-text{align-items:center;display:inline-flex;font-weight:700;gap:10px}.ms-show-question{background:none;border:none;color:#1d4ed8;cursor:pointer;float:left;font-family:inherit;font-size:13px;padding:2px 0}.ms-show-question:hover{text-decoration:underline}.ms-question-row td{background:#fff}.ms-question-pic{display:block;margin-bottom:8px;max-height:320px;max-width:100%}.ms-sheet div.question-html-clean.ms-question-html{background:#0000;color:#000;font-size:15px;padding:0}.ms-note-row td{background:#fff}.ms-actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:flex-end;margin-top:20px}.ms-actions a{text-decoration:none}.ms-btn{align-items:center;background:#fff;border:1px solid #94a3b8;border-radius:6px;color:#0f172a;cursor:pointer;display:inline-flex;font-family:inherit;font-size:14px;font-weight:600;gap:8px;height:40px;padding:0 16px}.ms-btn:hover{background:#f1f5f9}.ms-btn-primary{background:#0f172a;border-color:#0f172a;color:#fff}.ms-btn-primary:hover{background:#1e293b}@media (max-width:760px){.ms-sheet{padding:20px 16px}.ms-table thead{display:none}.ms-table,.ms-table tbody,.ms-table td,.ms-table tr{display:block;width:100%!important}.ms-table tbody.ms-question{border:1px solid #000;margin-bottom:14px}.ms-table td{border:none;border-bottom:1px solid #e2e8f0}.ms-table td[data-label]:before{color:#64748b;content:attr(data-label);display:block;font-size:11px;font-weight:700;margin-bottom:2px;text-transform:uppercase}.ms-table td.ms-mark,.ms-total-row td{text-align:left}.ms-show-question{display:block;float:none;margin-bottom:4px}}@media print{body *{visibility:hidden}.ms-overlay,.ms-overlay *{visibility:visible}.ms-overlay{background:#fff;inset:0;overflow:visible;padding:0;position:absolute}.ms-sheet{box-shadow:none;padding:0;width:100%}.ms-actions,.ms-show-question{display:none!important}.ms-table tbody.ms-question{break-inside:avoid;page-break-inside:avoid}}.ms-overlay.ms-marking{align-items:center}.ms-marking-card{background:#fff;border-radius:12px;box-shadow:0 20px 50px #0f172a4d;color:#0f172a;font-family:Arial,Helvetica Neue,Helvetica,sans-serif;max-width:380px;padding:28px 28px 22px;text-align:center}.ms-marking-card p{color:#475569;font-size:14px;line-height:1.5;margin:6px 0 0}.ms-marking-card p strong{color:#0f172a;font-size:17px}.ms-marking-spinner{animation:ms-spin .9s linear infinite;border:4px solid #dbeafe;border-radius:50%;border-top-color:#2563eb;height:36px;margin:0 auto 12px;width:36px}@keyframes ms-spin{to{transform:rotate(1turn)}}.edexcel-math-box-wrapper{align-items:center;display:inline-flex;min-width:140px;vertical-align:middle}.edexcel-math-box-prefix{color:#1e293b;font-family:Cambria,Georgia,serif;font-size:16px;font-weight:700;margin-right:8px;-webkit-user-select:none;user-select:none}.edexcel-mathlive-mount-point{align-items:center;display:inline-flex;width:100%}.edexcel-mathlive-field{align-items:center;background:#fff;border:1.8px solid #94a3b8;border-radius:6px;box-shadow:inset 0 1px 2px #0000000d;color:#0f172a;cursor:text;display:inline-flex;font-size:19px;max-width:320px;min-height:46px;min-width:140px;outline:none;padding:4px 10px;transition:all .15s ease-in-out}.edexcel-mathlive-field:hover{border-color:#64748b;box-shadow:0 1px 4px #00000014}.edexcel-mathlive-field:focus,.edexcel-mathlive-field:focus-within{background:#fbfdff!important;border-color:#2563eb!important;box-shadow:0 0 0 3px #2563eb2e,inset 0 1px 2px #0000000a!important}.edexcel-mathlive-field .ML__menu-toggle,.edexcel-mathlive-field .ML__toggles,.edexcel-mathlive-field .ML__virtual-keyboard-toggle,.edexcel-mathlive-field::part(menu-toggle),.edexcel-mathlive-field::part(virtual-keyboard-toggle),math-field::part(menu-toggle),math-field::part(virtual-keyboard-toggle){display:none!important;height:0!important;opacity:0!important;pointer-events:none!important;visibility:hidden!important;width:0!important}.edexcel-mathlive-field .ML__fraction{margin:0 2px}@media (max-width:640px){.edexcel-mathlive-field{min-width:120px;width:100%}}.pro-math-dock{--kb-bg:#f6f7f9;--kb-key:#fff;--kb-key-hover:#f1f4f8;--kb-key-alt:#eceff3;--kb-key-alt-hover:#e2e6ec;--kb-line:#e3e6eb;--kb-text:#1e293b;--kb-muted:#64748b;--kb-accent:#1f5fd8;--kb-accent-soft:#e8effd;background:var(--kb-bg);border:1px solid var(--kb-line);border-radius:14px;box-sizing:border-box;font-family:Outfit,Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;margin-top:14px;overflow:hidden;-webkit-user-select:none;user-select:none;width:100%}.pro-dock-header{align-items:center;background:#fff;border-bottom:1px solid var(--kb-line);display:flex;gap:8px;justify-content:space-between;padding:6px 8px}.pro-tabs{display:flex;gap:2px}.pro-tab{background:#0000;border:none;border-radius:8px;color:var(--kb-muted);cursor:pointer;font:inherit;font-size:13px;font-weight:600;padding:6px 12px;transition:background .12s ease,color .12s ease}.pro-tab:hover{color:var(--kb-text)}.pro-tab.active{background:var(--kb-accent-soft);color:var(--kb-accent)}.pro-header-actions{align-items:center;display:flex;gap:4px}.pro-clear-btn{background:#0000;border:none;border-radius:8px;color:var(--kb-muted);cursor:pointer;font:inherit;font-size:12.5px;font-weight:600;padding:6px 8px}.pro-clear-btn:hover{background:#fff1f2;color:#be123c}.pro-hide-btn{align-items:center;background:var(--kb-key-alt);border:none;border-radius:8px;color:#475569;cursor:pointer;display:flex;font-size:12px;height:28px;justify-content:center;width:32px}.pro-hide-btn:hover{background:var(--kb-key-alt-hover);color:var(--kb-text)}.pro-dock-body{box-sizing:border-box;padding:8px}.pro-split{grid-gap:12px;display:grid;gap:12px;grid-template-columns:1fr 1fr}.pro-pad{grid-gap:6px;display:grid;gap:6px;grid-template-columns:repeat(4,1fr)}.pro-key{align-items:center;background:var(--kb-key);border:1px solid var(--kb-line);border-radius:9px;box-shadow:0 1px 0 var(--kb-line);box-sizing:border-box;color:var(--kb-text);cursor:pointer;display:flex;font:inherit;font-size:16px;font-weight:500;height:44px;justify-content:center;line-height:1;min-width:0;padding:0 2px;touch-action:manipulation;transition:background .08s ease;white-space:nowrap}.pro-key:hover{background:var(--kb-key-hover)}.pro-key:active{background:var(--kb-key-alt-hover);box-shadow:none;transform:translateY(1px)}.pro-clear-btn:focus-visible,.pro-hide-btn:focus-visible,.pro-key:focus-visible,.pro-tab:focus-visible{outline:2px solid var(--kb-accent);outline-offset:1px}.pro-key.num{font-size:18px;font-weight:600}.pro-key.op{background:var(--kb-key-alt);font-size:18px}.pro-key.op:hover{background:var(--kb-key-alt-hover)}.pro-key.wide{grid-column:span 2}.pro-key sup{font-size:.62em;line-height:0;margin-left:1px;vertical-align:.55em}.pro-key.var,.pro-var{font-style:italic}.pro-key.letter,.pro-key.var,.pro-var{font-family:Georgia,Times New Roman,serif;font-size:17px}.pro-vector{font-size:14px;font-weight:600;text-decoration:overline}.pro-fraction-symbol{align-items:center;display:inline-flex;flex-direction:column;font-size:12px;line-height:1}.frac-line{background:currentColor;height:1.5px;margin:2px 0;width:14px}.pro-alpha{display:flex;flex-direction:column;gap:6px;margin:0 auto;max-width:640px}.pro-alpha-row{display:flex;gap:5px;justify-content:center}.pro-key.alpha{flex:1 1;font-family:Georgia,Times New Roman,serif;font-size:17px;max-width:48px}.pro-key.alpha-wide{flex:1.5 1;max-width:72px}.pro-key.space{color:var(--kb-muted);flex:4 1;font-size:13px;max-width:220px}@media (max-width:640px){.pro-dock-body{padding:6px}.pro-split{gap:8px}.pro-alpha,.pro-alpha-row,.pro-pad{gap:4px}.pro-key{border-radius:7px;font-size:15px;height:40px}.pro-key.num,.pro-key.op{font-size:17px}.pro-tab{padding:5px 9px}}@media (max-width:380px){.pro-split{gap:6px}.pro-pad{gap:3px}.pro-key{font-size:14px}}.ge-root{--ge-font:"Times New Roman",Times,"Nimbus Roman No9 L",serif;--ge-math-font:"Times New Roman","Cambria Math",Georgia,serif;--ge-ink:#000;--ge-muted:#1e293b;--ge-paper:#fff;--ge-grid-minor:#cbd5e1;--ge-grid-major:#475569;--ge-frame:#000;--ge-axis:#000;--ge-student:#000;--ge-student-soft:#00000014;--ge-ok:#059669;--ge-wrong:#dc2626;--ge-style:#d97706;--ge-solution:#1d4ed8;--ge-given:#000;--ge-toolbar-bg:#fff;--ge-btn-hover:#f1f5f9;--ge-radius:0px;background:var(--ge-paper);border:1.5px solid #000;border-radius:var(--ge-radius);box-shadow:none;color:var(--ge-ink);font-family:var(--ge-font);outline:none;overflow:hidden;user-select:none;-webkit-user-select:none}.ge-root:focus-visible{box-shadow:0 0 0 2px #000}.ge-toolbar{align-items:center;background:var(--ge-toolbar-bg);border-bottom:1.5px solid #000;display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;padding:6px 10px}.ge-actions,.ge-tools{display:flex;flex-wrap:wrap;gap:5px}.ge-btn{align-items:center;-webkit-appearance:none;appearance:none;background:#fff;border:1px solid #000;border-radius:2px;color:#000;cursor:pointer;display:inline-flex;font:600 13px/1 var(--ge-font);gap:5px;padding:5px 10px;transition:background .12s ease,color .12s ease}.ge-btn:hover:not(:disabled){background:#f1f5f9;color:#000}.ge-btn:active:not(:disabled){transform:translateY(1px)}.ge-btn:focus-visible{outline:2px solid var(--ge-ink);outline-offset:1px}.ge-btn:disabled{cursor:default;opacity:.35}.ge-tool.is-active{background:#000;border-color:#000;box-shadow:none;color:#fff}.ge-icon-btn{padding:5px 8px}.ge-readonly .ge-toolbar{display:none}.ge-canvas{background:var(--ge-paper);padding:8px}.ge-svg{cursor:crosshair;display:block;height:auto;margin:0 auto;max-height:74vh;max-height:var(--ge-max-height,74vh);touch-action:none;width:100%}.ge-readonly .ge-svg{cursor:default}.ge-svg[data-tool=erase]{cursor:not-allowed}.ge-svg text{font-family:var(--ge-font);pointer-events:none}.ge-paper{fill:var(--ge-paper)}.ge-grid-minor{stroke:var(--ge-grid-minor);stroke-width:.65}.ge-grid-major{stroke:var(--ge-grid-major);stroke-width:1.15}.ge-frame{fill:none;stroke:var(--ge-frame);stroke-width:1.5}.ge-axis{stroke:var(--ge-axis);stroke-width:1.8}.ge-arrowhead{fill:var(--ge-axis)}.ge-tick{stroke:var(--ge-axis);stroke-width:1.3}.ge-tick-label{fill:#000!important;font-feature-settings:"tnum";font-family:Times New Roman,Times,serif!important;font-size:13.5px;font-variant-numeric:tabular-nums;font-weight:400}.ge-origin-label{font-size:13.5px!important;font-style:normal!important}.ge-axis-name,.ge-origin-label{fill:#000!important;font-family:var(--ge-math-font)!important;font-weight:400!important}.ge-axis-name{font-size:16px!important;font-style:italic!important}.ge-axis-title{fill:#000!important;font-family:Times New Roman,Times,serif!important;font-size:14.5px;font-weight:400}.ge-given-shape{fill:#4755691f;stroke:var(--ge-given);stroke-width:2;stroke-linejoin:round}.ge-shape-label{fill:var(--ge-ink);font:italic 700 17px var(--ge-math-font)!important}.ge-given-curve,.ge-given-line{stroke:var(--ge-given);stroke-width:2;fill:none}.ge-given-line.is-dashed{stroke-dasharray:8 6}.ge-given-point{stroke:var(--ge-ink);stroke-width:2.2;stroke-linecap:round}.ge-given-label{fill:var(--ge-ink);font:italic 700 15px var(--ge-math-font)!important}.ge-point{stroke:var(--ge-student);stroke-width:2.3;stroke-linecap:round}.ge-ghost-cross{stroke:var(--ge-student);stroke-opacity:.45;stroke-width:1.8;stroke-linecap:round;pointer-events:none}.ge-line{stroke:var(--ge-student);stroke-width:2.2;stroke-linecap:round}.ge-line.is-dashed{stroke-dasharray:10 7}.ge-line.is-preview{stroke-opacity:.45;stroke-dasharray:4 5}.ge-curve{stroke:var(--ge-student);stroke-width:2.2;fill:none;stroke-linecap:round;stroke-linejoin:round}.ge-handle{fill:#fff;stroke:var(--ge-student);stroke-width:1.8}.ge-handle.is-pending{fill:var(--ge-student);animation:ge-pulse 1.1s ease-in-out infinite;transform-box:fill-box;transform-origin:center}.ge-poly{fill:var(--ge-student-soft);stroke:var(--ge-student);stroke-width:2;stroke-linejoin:round}.ge-vertex{fill:var(--ge-student);stroke:#fff;stroke-width:1.5}.ge-vertex-index{fill:var(--ge-student);font-size:10px;font-weight:700}.ge-region{fill:var(--ge-student-soft)}.ge-region-unwanted{stroke:none}.ge-hatch-line{stroke:#334155;stroke-width:2}.ge-region-badge{fill:#fff;stroke:#0f172a;stroke-width:2}.ge-region-label{fill:#0f172a;font:italic 700 18px var(--ge-math-font)!important}.ge-region-label.is-ghost{fill-opacity:.45}.ge-curve.is-ok,.ge-handle.is-ok,.ge-line.is-ok,.ge-point.is-ok,.ge-region-badge.is-ok{stroke:var(--ge-ok)}.ge-vertex.is-ok{fill:var(--ge-ok)}.ge-poly.is-ok{stroke:var(--ge-ok);fill:#05966924}.ge-region.is-ok{fill:#05966929}.ge-handle.is-wrong,.ge-line.is-wrong,.ge-point.is-wrong,.ge-region-badge.is-wrong{stroke:var(--ge-wrong)}.ge-vertex.is-wrong{fill:var(--ge-wrong)}.ge-region.is-wrong{fill:#dc262624}.ge-handle.is-style,.ge-line.is-style{stroke:var(--ge-style)}.ge-line.is-wrong,.ge-point.is-wrong,.ge-vertex.is-wrong{animation:ge-shake .4s ease;transform-box:fill-box;transform-origin:center}.ge-sol-curve,.ge-sol-line{stroke:var(--ge-solution);stroke-width:4.5;stroke-opacity:.45;fill:none;stroke-linecap:round}.ge-sol-line.is-dashed{stroke-dasharray:12 8}.ge-sol-poly{fill:#2563eb1f;stroke:var(--ge-solution);stroke-width:3.5;stroke-opacity:.55;stroke-dasharray:8 6}.ge-sol-point{fill:none;stroke:var(--ge-solution);stroke-width:2.4;stroke-opacity:.8}.ge-sol-region{fill:#2563eb29}.ge-layer-solution{animation:ge-fade .35s ease}.ge-crosshair{stroke:#0f172a;stroke-opacity:.15;stroke-width:1;stroke-dasharray:3 3;pointer-events:none}.ge-ghost{fill:var(--ge-student);fill-opacity:.35;pointer-events:none}.ge-ghost-region{fill:var(--ge-student-soft);stroke:var(--ge-student);stroke-opacity:.5;stroke-width:1.5;stroke-dasharray:3 3}.ge-tag-bg{fill:var(--ge-ink);fill-opacity:.88;pointer-events:none}.ge-tag-text{fill:#fff;font-feature-settings:"tnum";font-size:12px;font-variant-numeric:tabular-nums;font-weight:600}.ge-status{border-top:1px solid #f1f5f9;color:var(--ge-muted);font-size:12px;min-height:20px;padding:7px 12px 8px;transition:color .2s ease,background .2s ease}.ge-status-warn{background:#fff7ed;color:#9a3412}.ge-readonly .ge-status{display:none}@keyframes ge-pulse{0%,to{transform:scale(1)}50%{transform:scale(1.35)}}@keyframes ge-shake{0%,to{transform:translateX(0)}25%{transform:translateX(-3px)}75%{transform:translateX(3px)}}@keyframes ge-fade{0%{opacity:0}to{opacity:1}}@media (max-width:560px){.ge-btn span{display:none}.ge-btn{padding:9px}}@media (prefers-reduced-motion:reduce){.ge-layer-solution,.ge-root *{animation:none!important;transition:none!important}}.drfrost-part-control-bar{align-items:center;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;margin:12px 0 16px}.drfrost-check-btn{align-items:center;-webkit-appearance:none;appearance:none;background:#0284c7;border:none;border-radius:6px;box-shadow:0 2px 6px #0284c740;color:#fff;cursor:pointer;display:inline-flex;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:13.5px;font-weight:700;gap:7px;padding:7px 16px;transition:all .2s ease}.drfrost-check-btn:hover{background:#0369a1;box-shadow:0 4px 10px #0284c759;transform:translateY(-1px)}.drfrost-check-btn:active{transform:translateY(1px)}.drfrost-ms-btn{align-items:center;-webkit-appearance:none;appearance:none;background:#f8fafc;border:1px solid #cbd5e1;border-radius:6px;color:#334155;cursor:pointer;display:inline-flex;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:13px;font-weight:600;gap:6px;padding:6px 14px;transition:all .15s ease}.drfrost-ms-btn:hover{background:#f1f5f9;border-color:#94a3b8;color:#0f172a}.drfrost-part-feedback-box{align-items:center;border-radius:8px;display:flex;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:13.5px;gap:10px;line-height:1.5;margin:8px 0 14px;padding:10px 14px}.drfrost-part-feedback-box.correct{background:#ecfdf5;border:1px solid #a7f3d0;color:#065f46}.drfrost-retry-btn{align-items:center;-webkit-appearance:none;appearance:none;background:#d97706;border:none;border-radius:6px;box-shadow:0 2px 6px #d9770640;color:#fff;cursor:pointer;display:inline-flex;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:13.5px;font-weight:700;gap:7px;padding:7px 16px;transition:all .2s ease}.drfrost-retry-btn:hover{background:#b45309;box-shadow:0 4px 10px #d9770659;transform:translateY(-1px)}.drfrost-completed-badge{align-items:center;background:#ecfdf5;border:1.5px solid #10b981;border-radius:6px;color:#047857;display:inline-flex;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:13.5px;font-weight:700;gap:7px;padding:7px 16px}.drfrost-part-feedback-box.warning{background:#fffbeb;border:1px solid #fde68a;color:#92400e}.drfrost-part-feedback-box.incorrect{background:#fef2f2;border:1px solid #fecaca;color:#991b1b}.drfrost-part-badge{align-items:center;background:#0f172a;border-radius:5px;color:#fff;display:inline-flex;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:13px;font-weight:700;padding:3px 9px}.drfrost-part-stem{line-height:1.4}.drfrost-part-marks,.drfrost-part-stem{color:#000;font-family:Times New Roman,Times,serif;font-size:18.5px;font-weight:700}.drfrost-part-marks{white-space:nowrap}.drfrost-part-markscheme-drawer{animation:ge-fade .25s ease;background:#f8fafc;border:1px solid #e2e8f0;border-left:4px solid #0284c7;border-radius:6px;color:#1e293b;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:13.5px;line-height:1.6;margin:8px 0 18px;padding:14px 18px}.drfrost-part-markscheme-title{align-items:center;color:#0369a1;display:flex;font-weight:700;gap:6px;margin-bottom:6px}.exam-cf-input.cell-correct{background-color:#ecfdf5!important;border-color:#10b981!important;color:#065f46!important}.exam-cf-input.cell-incorrect{background-color:#fef2f2!important;border-color:#ef4444!important;color:#991b1b!important}.ge-readonly-grid .ge-status,.ge-readonly-grid .ge-toolbar{display:none!important}.gq-root{color:#0f172a;color:var(--fg-0f172a,#0f172a);font-family:inherit;margin:8px auto;max-width:720px;width:100%}.gq-part+.gq-part{border-top:1px solid #e2e8f0;border-top:1px solid var(--bg-e2e8f0,#e2e8f0);margin-top:28px;padding-top:22px}.gq-part-head{align-items:baseline;display:flex;font-family:Times New Roman,Times,serif;font-size:17px;gap:10px;margin-bottom:12px}.gq-part-prompt{flex:1 1;min-width:0}.gq-part-prompt p,.gq-part-prompt>div{margin:0!important}.gq-part-label,.gq-part-marks{font-weight:700}.gq-part-marks{margin-left:auto}.gq-grid{background:#fff;border-radius:8px}.gq-grid-static{margin-bottom:14px}.gq-grid-static .ge-status,.gq-grid-static .ge-toolbar{display:none}.gq-table{background:#fff;border-collapse:collapse;color:#000;font-family:Times New Roman,Times,serif;font-size:17px;margin:4px auto;min-width:300px}.gq-table td,.gq-table th{border:1px solid #000;padding:7px 16px;text-align:center}.gq-table th{font-weight:700}.gq-input{background:#fff;border:1px solid #94a3b8;border-radius:6px;color:#000;font:inherit;font-size:16px;outline:none;padding:6px 10px}.gq-input:focus{border-color:#2563eb;box-shadow:0 0 0 3px #2563eb26}.gq-input:disabled{background:#f8fafc}.gq-input.is-ok{background:#ecfdf5;border-color:#059669}.gq-input.is-wrong{background:#fef2f2;border-color:#dc2626}.gq-cell{text-align:center;width:90px}.gq-calc{align-items:center;display:inline-flex;gap:10px}.gq-calc-label{color:#475569;color:var(--fg-475569,#475569);font-weight:600}.gq-calc .gq-input{width:130px}.gq-calc-unit{font-size:17px;font-weight:600}.gq-describe{grid-gap:12px;display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(170px,1fr))}.gq-field{color:#475569;color:var(--fg-475569,#475569);display:flex;flex-direction:column;font-size:13.5px;font-weight:600;gap:5px}.gq-check-row{align-items:center;display:flex;flex-wrap:wrap;gap:12px;margin-top:14px}.gq-check-btn{align-items:center;background:#2563eb;border:0;border-radius:8px;color:#fff;cursor:pointer;display:inline-flex;font-size:15px;font-weight:600;gap:7px;padding:9px 20px}.gq-check-btn:hover{background:#1d4ed8}.gq-check-btn.is-retry{background:#f59e0b}.gq-check-btn.is-retry:hover{background:#d97706}.gq-tries{color:#64748b;color:var(--fg-64748b,#64748b);font-size:13.5px}.gq-score{border-radius:999px;font-size:14px;font-weight:700;padding:5px 12px}.gq-score-full{background:#dcfce7;color:#166534}.gq-score-some{background:#fef3c7;color:#92400e}.gq-score-none{background:#fee2e2;color:#991b1b}.gq-link{align-items:center;background:none;border:0;color:#2563eb;cursor:pointer;display:inline-flex;font-size:14px;font-weight:600;gap:6px;padding:0}.gq-link:hover{text-decoration:underline}.gq-result{background:#f8fafc;background:var(--bg-f8fafc,#f8fafc);border-left:4px solid #94a3b8;border-radius:6px;font-size:14.5px;line-height:1.5;margin-top:12px;padding:10px 14px}.gq-result-full{border-left-color:#059669}.gq-result-some{border-left-color:#f59e0b}.gq-result-none{border-left-color:#dc2626}.gq-result-title{display:block}.gq-result ul{margin:4px 0 0;padding-left:18px}.gq-reveal{font-weight:600;margin:6px 0 0}.gq-total{font-size:15.5px;font-weight:700;margin-top:22px}.gq-scheme{margin-top:14px}.gq-scheme-body{background:#f8fafc;background:var(--bg-f8fafc,#f8fafc);border:1px solid #e2e8f0;border:1px solid var(--bg-e2e8f0,#e2e8f0);border-radius:8px;margin-top:10px;padding:12px 14px}.gq-empty-note{color:#b45309;font-size:13.5px;font-weight:600}.graph-mode-switch{background:#f8fafc;background:var(--bg-f8fafc,#f8fafc);border:1px solid #e2e8f0;border:1px solid var(--bg-e2e8f0,#e2e8f0);border-radius:10px;display:inline-flex;flex-wrap:wrap;gap:4px;margin:4px 0 12px;padding:4px}.graph-mode-option{align-items:center;background:#0000;border:0;border-radius:7px;color:#475569;color:var(--fg-475569,#475569);cursor:pointer;display:inline-flex;font-size:14px;font-weight:600;gap:6px;padding:7px 14px}.graph-mode-option:hover:not(:disabled){color:#0f172a;color:var(--fg-0f172a,#0f172a)}.graph-mode-option.active{background:#fff;box-shadow:0 1px 3px #0f172a1f;color:#1d4ed8}.graph-mode-option:disabled{cursor:default;opacity:.55}.graph-paper-answer{margin:6px 0 10px}.graph-paper-hint{align-items:center;color:#64748b;color:var(--fg-64748b,#64748b);display:flex;flex-wrap:wrap;font-size:14px;gap:10px;margin-bottom:10px}.graph-paper-draw-btn{align-items:center;background:#eff6ff;border:1px solid #bfdbfe;border-radius:999px;color:#1d4ed8;cursor:pointer;display:inline-flex;font-size:13.5px;font-weight:600;gap:6px;padding:5px 12px}.graph-paper-draw-btn:hover{background:#dbeafe}.graph-paper-grid+.graph-paper-grid{margin-top:26px}.graph-paper-stem{align-items:baseline;color:#000;color:var(--fg-000000,#000);display:flex;font-family:Times New Roman,Times,serif;font-size:16px;gap:8px;margin-bottom:8px}.graph-paper-marks{font-weight:700;margin-left:auto}.graph-paper-figure{background:#fff;border-radius:4px;display:flex;justify-content:center}.graph-paper-figure svg{display:block;height:auto;max-width:640px;width:100%}.interactive-cards-wrapper{align-items:center;background:#0000;border:none;display:flex;flex-direction:column;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;margin:16px auto;max-width:580px;padding:4px 0}.interactive-cards-row{gap:20px;margin:12px 0 16px;max-width:100%;overflow-x:auto;padding:8px 6px}.interactive-card,.interactive-cards-row{align-items:center;display:flex;justify-content:center}.interactive-card{background:#fff;border:1.8px solid #1e293b;border-radius:4px;flex-shrink:0;height:60px;position:relative;transition:border-color .15s ease,box-shadow .15s ease,background .15s ease;width:60px}.interactive-card.is-fixed{background:#fff;border-color:#1e293b;cursor:default}.interactive-card.is-fixed .card-val-text{color:#0f172a;font-family:Times New Roman,Times,serif;font-size:24px;font-weight:700;line-height:1}.interactive-card.is-input{background:#fff;cursor:text}.interactive-card.is-input:hover{border-color:#2563eb}.interactive-card.is-input.is-focused{border-color:#2563eb;box-shadow:0 0 0 3px #2563eb33}.card-num-input{background:#0000;border:none;caret-color:#2563eb;color:#0f172a;font-family:Times New Roman,Times,serif;font-size:24px;font-weight:700;height:100%;outline:none;padding:0;text-align:center;width:100%}.interactive-card.is-correct{background:#f0fdf4!important;border-color:#10b981!important}.interactive-card.is-correct .card-num-input{color:#065f46!important}.interactive-card.is-incorrect{background:#fef2f2!important;border-color:#ef4444!important}.interactive-card.is-incorrect .card-num-input{color:#991b1b!important}.card-status-sign{align-items:center;border:1.5px solid #fff;border-radius:50%;box-shadow:0 2px 4px #00000040;color:#fff;display:flex;font-size:12px;font-weight:800;height:20px;justify-content:center;position:absolute;right:-8px;top:-8px;-webkit-user-select:none;user-select:none;width:20px;z-index:10}.card-status-sign.correct{background:#10b981}.card-status-sign.incorrect{background:#ef4444}@media (max-width:600px){.interactive-cards-row{gap:10px}.interactive-card{height:48px;width:48px}.card-num-input,.interactive-card.is-fixed .card-val-text{font-size:20px}}.sparx-graph-wrapper{background:#fff;border:2px solid #000;border-radius:4px;box-shadow:0 4px 16px #00000014;color:#111827;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;margin:16px auto 20px;max-width:720px;overflow:hidden;width:100%}[data-theme=dark] .sparx-graph-wrapper,body.dark .sparx-graph-wrapper{background:#fff;border-color:#000}.sparx-toolbar{background:#fff;border-bottom:1.5px solid #000;flex-wrap:wrap;justify-content:space-between;padding:8px 12px}.sparx-tool-group,.sparx-toolbar{align-items:center;display:flex;gap:8px}.sparx-tool-btn{align-items:center;border-radius:4px;cursor:pointer;display:inline-flex;font-size:13.5px;font-weight:700;gap:8px;padding:6px 14px;transition:all .15s ease;-webkit-user-select:none;user-select:none}.sparx-btn-point{background:#fff;border:1.5px solid #000;color:#000}.sparx-btn-point.active{background:#000;border-color:#000;color:#fff}.sparx-btn-delete{background:#fff;border:1.5px solid #000;color:#000}.sparx-btn-delete.active{background:#dc2626;border-color:#dc2626;color:#fff}.sparx-btn-curve{background:#fff;border:1.5px solid #0284c7;color:#0284c7}.sparx-btn-curve.active{background:#0284c7;border-color:#0284c7;color:#fff}.sparx-btn-freehand{background:#fff;border:1.5px solid #7c3aed;color:#7c3aed}.sparx-btn-freehand.active{background:#7c3aed;border-color:#7c3aed;color:#fff}.sparx-tool-btn:hover:not(.active){background:#f3f4f6}.sparx-icon-btn{align-items:center;background:#fff;border:1.5px solid #9ca3af;border-radius:4px;color:#111827;cursor:pointer;display:inline-flex;font-size:14px;height:32px;justify-content:center;transition:all .15s ease;width:32px}.sparx-icon-btn:hover:not(:disabled){background:#f3f4f6;border-color:#4b5563}.sparx-icon-btn:disabled{border-color:#d1d5db;cursor:not-allowed;opacity:.35}.sparx-canvas-container{background:#fff;display:flex;justify-content:center;overflow:hidden;padding:16px 20px 12px;position:relative;width:100%}svg.sparx-svg-graph{cursor:crosshair;display:block;height:auto;max-width:100%;touch-action:none;-webkit-user-select:none;user-select:none}.sparx-coord-bubble{background:#000;border-radius:5px;box-shadow:0 3px 8px #00000059;color:#fff;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:12.5px;font-weight:700;padding:4px 9px;pointer-events:none;position:absolute;transform:translate(-50%,-135%);white-space:nowrap;z-index:20}.sparx-coord-bubble:after{border-color:#000 #0000 #0000;border-style:solid;border-width:5px 5px 0;bottom:-5px;content:"";left:50%;position:absolute;transform:translateX(-50%)}.sparx-footer-bar{align-items:center;background:#fff;border-top:1px solid #e5e7eb;color:#374151;display:flex;flex-wrap:wrap;font-size:13px;gap:8px;justify-content:space-between;padding:8px 14px}.sparx-footer-tip{align-items:center;display:flex;gap:6px}.sparx-plotted-readout{color:#111827;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;font-size:12.5px;font-weight:600}.tree-diagram-scroll{margin:14px 0 18px;overflow-x:auto;width:100%}.tree-diagram{background:#fff;border:1px solid #000;border-radius:4px;margin:0 auto;max-width:640px;min-width:520px;position:relative;width:100%}.tree-diagram-svg{display:block;height:100%;inset:0;position:absolute;width:100%}.tree-diagram-blank{position:absolute;transform:translate(-50%,-50%)}.tree-diagram-blank .edexcel-math-box-wrapper{min-width:0}.tree-diagram-blank .edexcel-mathlive-field{font-size:16px;justify-content:center;max-width:74px;min-height:48px;min-width:74px;padding:2px 4px;width:74px}.tree-diagram-blank.is-correct .edexcel-mathlive-field{background:#f0fdf4;border-color:#15803d}.tree-diagram-blank.is-incorrect .edexcel-mathlive-field{background:#fef2f2;border-color:#dc2626}.report-modal-overlay{align-items:center;animation:reportFadeIn .2s cubic-bezier(.16,1,.3,1);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#0f172abf;bottom:0;display:flex;justify-content:center;left:0;padding:16px;position:fixed;right:0;top:0;z-index:10000}@keyframes reportFadeIn{0%{opacity:0}to{opacity:1}}.report-modal-dialog{animation:reportSlideUp .25s cubic-bezier(.16,1,.3,1);background:var(--bg-ffffff);border-radius:14px;box-shadow:0 20px 40px -10px rgba(0,0,0,calc(var(--shadow-k)*.3)),0 0 0 1px #e2e8f0cc;display:flex;flex-direction:column;max-width:540px;overflow:hidden;width:100%}@keyframes reportSlideUp{0%{opacity:0;transform:translateY(18px) scale(.97)}to{transform:translateY(0) scale(1)}}.report-modal-header{align-items:center;background:var(--bg-f8fafc);border-bottom:1px solid var(--line-e2e8f0);display:flex;justify-content:space-between;padding:18px 22px}.report-modal-title-wrap{align-items:center;display:flex;gap:12px}.report-badge-icon{align-items:center;background:var(--bg-fee2e2);border-radius:10px;color:var(--error-text);display:flex;flex-shrink:0;font-size:17px;height:38px;justify-content:center;width:38px}.report-modal-header h3{color:var(--fg-0f172a);font-size:17px;font-weight:700;line-height:1.25;margin:0}.report-modal-subtitle{color:var(--fg-64748b);font-size:12px;font-weight:500;margin:3px 0 0}.report-close-btn{align-items:center;background:#0000;border:none;border-radius:8px;color:var(--fg-64748b);cursor:pointer;display:flex;font-size:16px;height:32px;justify-content:center;transition:all .15s ease;width:32px}.report-close-btn:hover{background:var(--bg-e2e8f0);color:var(--fg-0f172a)}.report-modal-body{display:flex;flex-direction:column;gap:14px;max-height:calc(85vh - 90px);overflow-y:auto;padding:20px 22px}.report-section-label{color:var(--fg-1e293b);display:block;font-size:13px;font-weight:700;margin-bottom:4px}.report-optional{color:#94a3b8;font-size:11.5px;font-weight:400}.report-reasons-grid{display:flex;flex-direction:column;gap:8px}.report-reason-card{align-items:flex-start;background:var(--bg-ffffff);border:1.5px solid var(--line-e2e8f0);border-radius:10px;cursor:pointer;display:flex;gap:12px;padding:10px 14px;transition:all .18s ease}.report-reason-card:hover{background:var(--bg-f8fafc);border-color:var(--line-cbd5e1)}.report-reason-card.active{background:var(--bg-fff5f5);border-color:#ef4444;box-shadow:0 0 0 1px #ef444433}.report-reason-radio{color:#94a3b8;font-size:15px;margin-top:2px;transition:color .15s}.report-reason-card.active .report-reason-radio{color:var(--error-text)}.report-reason-content{flex:1 1}.report-reason-title{align-items:center;color:var(--fg-0f172a);display:flex;font-size:13.5px;font-weight:700;gap:8px}.report-reason-icon{color:var(--fg-64748b);font-size:14px}.report-reason-card.active .report-reason-icon{color:var(--error-text)}.report-reason-desc{color:var(--fg-64748b);font-size:11.5px;line-height:1.4;margin:2px 0 0}.report-comment-wrap{display:flex;flex-direction:column;gap:6px;position:relative}.report-comment-wrap textarea{border:1.5px solid var(--line-e2e8f0);border-radius:8px;box-sizing:border-box;color:var(--fg-0f172a);font-family:inherit;font-size:13px;outline:none;padding:10px 12px;resize:vertical;transition:border-color .15s ease,box-shadow .15s ease;width:100%}.report-comment-wrap textarea:focus{border-color:#ef4444;box-shadow:0 0 0 3px #ef44441f}.report-char-count{align-self:flex-end;color:#94a3b8;font-size:11px}.report-error-msg{align-items:center;background:var(--bg-fef2f2);border:1px solid var(--line-fecaca);border-radius:8px;color:var(--fg-b91c1c);display:flex;font-size:12.5px;font-weight:600;gap:8px;padding:10px 12px}.report-modal-footer{align-items:center;border-top:1px solid var(--line-e2e8f0);display:flex;gap:10px;justify-content:flex-end;padding-top:10px}.report-btn-secondary{background:var(--bg-f1f5f9);border:1px solid var(--line-cbd5e1);border-radius:8px;color:var(--fg-475569);cursor:pointer;font-size:13px;font-weight:700;padding:8px 16px;transition:all .15s}.report-btn-secondary:hover:not(:disabled){background:var(--bg-e2e8f0);color:var(--fg-0f172a)}.report-btn-primary{align-items:center;background:linear-gradient(135deg,#ef4444,#dc2626);border:none;border-radius:8px;box-shadow:0 2px 8px #ef44444d;color:#fff;cursor:pointer;display:inline-flex;font-size:13px;font-weight:700;gap:8px;padding:8px 18px;transition:all .15s}.report-btn-primary:hover:not(:disabled){background:linear-gradient(135deg,#dc2626,#b91c1c);box-shadow:0 4px 12px #ef444466;transform:translateY(-1px)}.report-btn-primary:disabled,.report-btn-secondary:disabled{cursor:not-allowed;opacity:.6}.report-spinner{animation:reportSpin .6s linear infinite;border:2px solid #fff6;border-radius:50%;border-top-color:#fff;height:14px;width:14px}@keyframes reportSpin{to{transform:rotate(1turn)}}.report-success-state{align-items:center;display:flex;flex-direction:column;gap:12px;padding:40px 24px;text-align:center}.report-success-icon{animation:reportPop .3s cubic-bezier(.175,.885,.32,1.275);color:var(--success-text);font-size:48px}@keyframes reportPop{0%{opacity:0;transform:scale(.5)}to{opacity:1;transform:scale(1)}}.report-success-state h4{color:var(--fg-0f172a);font-size:18px;font-weight:800;margin:0}.report-success-state p{color:var(--fg-64748b);font-size:13.5px;line-height:1.5;margin:0 0 12px;max-width:380px}:root{--bluebook-black:#000;--bluebook-navy:#111b38;--bluebook-bg:#fff;--bluebook-text-dark:#0f172a;--bluebook-text-muted:#475569;--bluebook-border:#cbd5e1}.student-mistakes-container{--bg:#f1f5f9;--surface:#fff;--surface-hover:#f8fafc;--surface-muted:#f1f5f9;--border:#cbd5e1;--border-light:#e2e8f0;--text:#0f172a;--text-light:#94a3b8;background-color:#fff;color:#0f172a;display:flex;flex-direction:column;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;height:100vh;margin:0;overflow:hidden;padding:0;width:100vw}.bluebook-question-text-body,.bluebook-question-text-body *,.bluebook-question-text-body .katex,.bluebook-question-text-body .katex *,.bluebook-question-text-body .question-html-clean,.bluebook-question-text-body .question-html-clean *{color:#0f172a!important}.bluebook-exam-body{flex:1 1;min-height:0;width:100%}.bluebook-calc-dock,.bluebook-exam-body{display:flex;overflow:hidden;position:relative}.bluebook-calc-dock{background:#fff;border-right:2px solid #cbd5e1;box-shadow:4px 0 15px #0000000d;flex-direction:column;flex-shrink:0;height:100%;-webkit-user-select:none;user-select:none;width:460px;z-index:50}.bluebook-calc-dock-header{align-items:center;background:#f8fafc;border-bottom:1px solid #e2e8f0;display:flex;flex-shrink:0;height:40px;justify-content:space-between;padding:0 16px}.bluebook-calc-dock-title{align-items:center;color:#0f172a;display:flex;font-size:13px;font-weight:700;gap:8px}.bluebook-calc-dock-close{background:#fff;border:1px solid #cbd5e1;border-radius:6px;color:#475569;cursor:pointer;font-size:12px;font-weight:700;padding:2px 10px;transition:all .2s ease}.bluebook-calc-dock-close:hover{background:#fee2e2;border-color:#fca5a5;color:#dc2626}.bluebook-calc-iframe{border:none;height:calc(100% - 40px);width:100%}.bluebook-calc-resize-handle{align-items:center;background:#0000;bottom:0;cursor:col-resize;display:flex;justify-content:center;position:absolute;right:-4px;top:0;transition:background .2s ease;width:10px;z-index:100}.bluebook-calc-resize-handle:active,.bluebook-calc-resize-handle:hover{background:#2563eb33}.resize-handle-bar{background:var(--fixed-400);border-radius:2px;height:36px;width:3px}.bluebook-calc-resize-handle:hover .resize-handle-bar{background:var(--accent-primary)}.bluebook-question-main-area{box-sizing:border-box;display:flex;flex:1 1;flex-direction:column;height:100%;overflow-y:auto;padding:8px 32px 16px}.bluebook-question-inner-wrap{display:flex;flex-direction:column;gap:6px;margin:0 auto;max-width:760px;width:100%}.bluebook-top-bar{align-items:center;background:#fff;border-bottom:1px solid #e2e8f0;box-sizing:border-box;display:flex;flex-shrink:0;font-size:14px;font-weight:600;height:46px;justify-content:space-between;padding:6px 24px}.bluebook-directions-dropdown{align-items:center;border-radius:6px;color:#111b38;cursor:pointer;display:flex;font-weight:700;gap:6px;padding:3px 8px;transition:background .2s ease}.bluebook-directions-dropdown:hover{background:#f1f5f9}.bluebook-timer-capsule{align-items:center;background:#f1f5f9;border:1px solid #cbd5e1;border-radius:50px;color:#0f172a;display:flex;font-weight:700;gap:8px;padding:2px 12px}.bluebook-timer-toggle{background:#fff;border:1px solid #cbd5e1;border-radius:20px;color:#475569;cursor:pointer;font-size:11.5px;padding:1px 8px}.bluebook-tools-group{align-items:center;display:flex;gap:10px}.bluebook-tool-item{align-items:center;background:#0000;border:none;border-radius:6px;color:#111b38;cursor:pointer;display:flex;font-size:13px;font-weight:700;gap:5px;padding:3px 8px;transition:background .2s ease}.bluebook-tool-item:hover{background:#f1f5f9}.bluebook-exit-btn{align-items:center;background:#fef2f2;border:1px solid #fca5a5;border-radius:6px;color:#ef4444;cursor:pointer;display:flex;font-size:12.5px;font-weight:700;gap:5px;padding:3px 10px;transition:all .2s ease}.bluebook-exit-btn:hover{background:#ef4444;color:#fff}.bluebook-practice-banner{background:#111b38;color:#fff;flex-shrink:0;font-size:10.5px;font-weight:800;letter-spacing:1.5px;padding:3.5px;text-align:center;text-transform:uppercase}.bluebook-question-container{background:#0000;border:none;border-radius:0;box-shadow:none;padding:0}.bluebook-question-header-bar{align-items:center;border-bottom:1px dashed #cbd5e1;display:flex;gap:12px;margin-bottom:12px;padding-bottom:8px}.bluebook-question-badge{background:#000;border-radius:4px;color:#fff;flex-shrink:0;font-size:13.5px;font-weight:800;justify-content:center;min-width:20px;text-align:center}.bluebook-flag-btn,.bluebook-question-badge{align-items:center;display:inline-flex;padding:3px 10px}.bluebook-flag-btn{background:#fff;border:1px solid #cbd5e1;border-radius:4px;color:#334155;cursor:pointer;font-size:12.5px;font-weight:700;gap:6px;transition:all .2s ease}.bluebook-flag-btn:hover{background:#f8fafc;border-color:#94a3b8}.bluebook-flag-btn.flagged{background:#fffbeb;border-color:#f59e0b;color:#b45309}.bluebook-report-btn{align-items:center;background:#fff;border:1px solid #cbd5e1;border-radius:4px;color:#475569;cursor:pointer;display:inline-flex;font-size:12.5px;font-weight:700;gap:6px;margin-left:8px;padding:3px 10px;transition:all .2s ease}.bluebook-report-btn:hover{background:#fff1f2;border-color:#fca5a5;color:#e11d48}.bluebook-report-btn i{color:#94a3b8;transition:color .2s ease}.bluebook-report-btn:hover i{color:#e11d48}.bluebook-elimination-toggle-btn{align-items:center;background:#2563eb;border:none;border-radius:4px;color:#fff;cursor:pointer;display:flex;font-size:11.5px;font-weight:800;gap:4px;padding:3px 9px;transition:all .2s ease}.bluebook-elimination-toggle-btn.active{background:#1d4ed8;box-shadow:inset 0 2px 4px #0003}.elim-icon-abc{letter-spacing:.5px;text-decoration:line-through}.bluebook-delete-btn{align-items:center;background:#fef2f2;border:1px solid #fca5a5;border-radius:4px;color:#ef4444;cursor:pointer;display:flex;font-size:12px;font-weight:700;gap:5px;padding:2px 8px}.bluebook-delete-btn:hover{background:#ef4444;color:#fff}.bluebook-question-text-body{color:var(--fixed-900);font-family:Times New Roman,Times,Nimbus Roman No9 L,serif;font-size:18.5px;font-weight:400;line-height:1.68;margin-bottom:8px;margin-top:0;text-align:left}.bluebook-question-text-body .question-html-clean,.bluebook-question-text-body .question-html-clean p,.bluebook-question-text-body p{font-size:18.5px!important;line-height:1.68!important}.bluebook-question-text-body .katex,.bluebook-question-text-body .question-html-clean .katex{font-size:1.08em!important}.bluebook-question-text-body .katex-display,.bluebook-question-text-body .question-html-clean .katex-display{font-size:1.12em!important;margin:.6em 0!important}.bluebook-answer-card{background:#0000;border:none;border-radius:0;box-shadow:none;margin-top:2px;padding:0}.bluebook-choice-list{display:flex;flex-direction:column;gap:8px}.bluebook-choice-row{align-items:center;display:flex;gap:10px}.bluebook-choice-card{align-items:center;background:#fff;border:1.5px solid #cbd5e1;border-radius:8px;box-sizing:border-box;cursor:pointer;display:flex;flex:1 1;gap:14px;outline:none;padding:9px 16px;text-align:left;transition:border-color .15s ease,background .15s ease}.bluebook-choice-card *{pointer-events:none}.bluebook-choice-card:hover{background:#f8fafc;border-color:#475569}.bluebook-choice-card.selected{background:#fff;border:2px solid #000;box-shadow:none}.bluebook-choice-card.eliminated{opacity:.45}.bluebook-choice-card.eliminated .bluebook-choice-text{text-decoration:line-through}.bluebook-choice-badge{align-items:center;background:#fff;border:1.5px solid #94a3b8;border-radius:50%;color:#0f172a;display:flex;flex-shrink:0;font-family:Times New Roman,Times,serif;font-size:15px;font-weight:800;height:32px;justify-content:center;transition:all .15s ease;width:32px}.bluebook-choice-card.selected .bluebook-choice-badge{background:#000;border-color:#000;color:#fff}.bluebook-choice-text,.bluebook-choice-text *,.bluebook-choice-text.question-html-clean,.bluebook-choice-text.question-html-clean p{color:#000;font-family:Times New Roman,Times,serif!important;font-size:18px!important;font-weight:500;line-height:1.55!important}.bluebook-choice-card.selected .bluebook-choice-text,.bluebook-choice-card.selected .bluebook-choice-text *,.bluebook-choice-card.selected .question-html-clean,.bluebook-choice-card.selected .question-html-clean *{color:#0f172a!important}.bluebook-choice-text .katex{font-size:1.06em!important}.bluebook-eliminate-btn{align-items:center;background:#fff;border:1px solid #cbd5e1;border-radius:50%;color:#64748b;cursor:pointer;display:flex;font-size:11px;font-weight:800;height:26px;justify-content:center;outline:none;text-decoration:line-through;transition:all .15s ease;width:26px}.bluebook-eliminate-btn:hover{background:#fee2e2;border-color:#ef4444;color:#dc2626}.bluebook-eliminate-btn.active{background:#ef4444;border-color:#dc2626;color:#fff}.bluebook-spr-container{background:#0000;display:flex;flex-direction:column;gap:8px;margin-top:4px;padding:4px 0}.bluebook-spr-title{color:#0f172a;font-size:12.5px;font-weight:800;letter-spacing:.5px;text-transform:uppercase}.bluebook-spr-box{background:#fff;border:1.5px solid #475569;border-radius:8px;box-sizing:border-box;color:#0f172a;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:18px;font-weight:700;height:42px;outline:none;padding:0 12px;transition:border-color .15s ease;width:140px}.bluebook-spr-box:focus{border-color:#000;box-shadow:0 0 0 2px #0000001a}.bluebook-spr-preview-line{color:#0f172a;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:14px;font-weight:700;margin-top:4px}.bluebook-bottom-bar{align-items:center;background:#fff;border-top:1px solid #e2e8f0;box-sizing:border-box;display:flex;flex-shrink:0;height:50px;justify-content:space-between;padding:0 24px;position:relative;z-index:100}.bluebook-footer-btn{background:#000;border:none;border-radius:6px;color:#fff;cursor:pointer;font-size:13.5px;font-weight:800;padding:7px 18px;transition:all .2s ease}.bluebook-footer-btn:hover{background:#334155}.bluebook-footer-btn.secondary{background:#f1f5f9;border:1px solid #cbd5e1;color:#0f172a}.bluebook-footer-btn.secondary:hover{background:#e2e8f0}.bluebook-question-picker-btn{align-items:center;background:#000;border:none;border-radius:20px;box-shadow:0 2px 6px #00000026;color:#fff;cursor:pointer;display:flex;font-size:13px;font-weight:700;gap:8px;padding:5px 16px;transition:background .2s ease}.bluebook-question-picker-btn:hover{background:#334155}.bluebook-palette-modal{background:#fff;border:1px solid #cbd5e1;border-radius:12px;bottom:56px;box-shadow:0 10px 30px #00000026;left:50%;max-width:90vw;padding:14px;position:absolute;transform:translateX(-50%);width:360px;z-index:200}.bluebook-palette-modal-header{align-items:center;border-bottom:1px solid #e2e8f0;color:#0f172a;display:flex;font-size:13px;font-weight:700;justify-content:space-between;margin-bottom:10px;padding-bottom:8px}.bluebook-palette-close{background:#0000;border:none;color:#64748b;cursor:pointer;font-size:14px}.bluebook-palette-grid{grid-gap:8px;display:grid;gap:8px;grid-template-columns:repeat(6,1fr);max-height:220px;overflow-y:auto}.bluebook-palette-num{align-items:center;background:#fff;border:1px solid #cbd5e1;border-radius:50%;color:#0f172a;cursor:pointer;display:flex;font-size:13px;font-weight:700;height:36px;justify-content:center;position:relative;transition:all .15s ease;width:36px}.bluebook-palette-num:hover{border-color:#000;color:#000}.bluebook-palette-num.current{background:#000;border-color:#000;color:#fff}.bluebook-palette-num.flagged:after{content:"🔖";font-size:10px;position:absolute;right:-4px;top:-6px}.retry-feedback-banner{align-items:center;border-radius:8px;display:flex;font-size:13.5px;font-weight:700;gap:10px;margin-top:8px;padding:8px 12px}.retry-feedback-banner.success{background-color:#dcfce7;border:1px solid #86efac;color:#15803d}.retry-feedback-banner.wrong{background-color:#fee2e2;border:1px solid #fca5a5;color:#b91c1c}.bluebook-question-text-body,.bluebook-question-text-body .question-html-clean,.bluebook-question-text-body .question-html-clean p,.bluebook-question-text-body div,.bluebook-question-text-body p{text-align:left!important}.bluebook-question-inner-wrap{align-items:stretch!important}.bluebook-content-wrapper,.bluebook-question-container,.bluebook-split-pane-left,.question-display{text-align:left!important}.exam-table-container{-webkit-overflow-scrolling:touch;margin:16px 0;overflow-x:auto;width:100%}.exam-table{background:#fff;border:1.5px solid #334155;border-collapse:collapse;box-shadow:0 1px 3px #0000000d;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:15px;margin:0 auto;min-width:280px;width:auto}.exam-table td,.exam-table th{border:1px solid #64748b;color:#0f172a;padding:8px 16px;text-align:center;vertical-align:middle}.exam-table th{background:#f1f5f9;border-bottom:2px solid #334155;color:#1e293b;font-weight:700}.exam-table tr:nth-child(2n) td{background:#f8fafc}.exam-diagram-container{align-items:center;display:flex;flex-direction:column;justify-content:center;margin:16px 0;max-width:100%;position:relative;-webkit-user-select:none;user-select:none}.exam-diagram-badge{align-self:flex-end;background:#f8fafc;border:1px dashed #94a3b8;border-radius:4px;color:#64748b;font-size:11px;font-style:italic;font-weight:600;margin-bottom:6px;padding:2px 8px}.exam-diagram-svg{background:#fff;border-radius:6px;filter:drop-shadow(0 1px 3px rgba(0,0,0,.06));height:auto;max-width:100%}.spr-multipart-wrapper{display:flex;flex-direction:column;gap:10px;margin-top:4px;width:100%}.spr-part-card{align-items:center;background:#f8fafc;border:1.5px solid #cbd5e1;border-radius:8px;display:flex;gap:12px;padding:8px 12px;transition:all .15s ease}.spr-part-card.active{background:#eff6ff;border-color:#2563eb;box-shadow:0 0 0 2px #2563eb1f}.spr-part-badge{color:#1e293b;font-size:13.5px;font-weight:800;min-width:65px;text-transform:uppercase}.spr-part-input{background:#fff;border:1.5px solid #94a3b8;border-radius:6px;color:#0f172a;flex:1 1;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;font-size:16px;font-weight:700;height:40px;max-width:240px;outline:none;padding:0 12px}.spr-part-input:focus{border-color:#2563eb;box-shadow:0 0 0 2px #2563eb26}.scientific-math-dock{background:#f8fafc;border:1.5px solid #e2e8f0;border-radius:10px;box-shadow:0 2px 8px #0000000a;display:flex;flex-direction:column;gap:8px;margin-top:10px;padding:10px;-webkit-user-select:none;user-select:none}.math-dock-header{align-items:center;display:flex;justify-content:space-between;padding:0 4px}.math-dock-title{align-items:center;color:#475569;display:flex;font-size:11.5px;font-weight:700;gap:6px;letter-spacing:.5px;text-transform:uppercase}.math-dock-toggle-btn{background:#0000;border:none;border-radius:4px;color:#2563eb;cursor:pointer;font-size:11.5px;font-weight:600;padding:2px 6px}.math-dock-toggle-btn:hover{background:#e2e8f0}.math-keys-grid{display:flex;flex-wrap:wrap;gap:6px}.math-key-btn{align-items:center;background:#fff;border:1.5px solid #cbd5e1;border-radius:6px;box-shadow:0 1px 2px #0000000a;color:#0f172a;cursor:pointer;display:inline-flex;font-size:14.5px;font-weight:700;height:38px;justify-content:center;min-width:42px;padding:0 8px;touch-action:manipulation;transition:all .12s ease}.math-key-btn:hover{background:#e2e8f0;border-color:#94a3b8;transform:translateY(-1px)}.math-key-btn:active{background:#cbd5e1;transform:translateY(1px)}.math-key-btn.action-key{background:#fef2f2;border-color:#fca5a5;color:#dc2626;font-size:13px}.math-key-btn.action-key:hover{background:#fee2e2}.math-key-btn.variable-key{color:#1d4ed8;font-family:Times New Roman,Times,serif;font-size:16px;font-style:italic}.math-key-btn.symbol-key{color:#047857;font-weight:800}.math-key-btn.nav-key{background:#e0f2fe;border-color:#bae6fd;color:#0284c7;font-size:14px;font-weight:800}.math-key-btn.nav-key:hover{background:#bae6fd;border-color:#7dd3fc;color:#0369a1}.spr-live-preview-box{align-items:center;background:#fff;border:1px solid #e2e8f0;border-radius:6px;display:flex;gap:10px;margin-top:8px;min-height:40px;padding:8px 12px}.spr-preview-label{color:#64748b;font-size:11.5px;font-weight:700;letter-spacing:.5px;text-transform:uppercase;white-space:nowrap}.spr-preview-content{align-items:center;color:#0f172a;display:flex;font-size:16px;overflow-x:auto}.edexcel-question-wrapper{display:flex;flex-direction:column;gap:14px;width:100%}.edexcel-intro-statement{color:#000;font-family:Times New Roman,Times,serif;font-size:18.5px;line-height:1.68;margin-bottom:10px}.edexcel-part-block{background:#fff;border-radius:8px;display:flex;flex-direction:column;margin-bottom:16px;margin-top:8px;padding:6px 2px}.edexcel-part-header{align-items:flex-start;display:flex;font-size:18px;gap:8px;line-height:1.65}.edexcel-part-letter{font-size:18.5px;font-weight:700;padding-top:1px;white-space:nowrap}.edexcel-part-letter,.edexcel-part-statement{color:#000;font-family:Times New Roman,Times,serif}.edexcel-part-statement{flex:1 1;font-size:18px;line-height:1.65}.edexcel-answer-row{align-items:center;display:flex;gap:12px;justify-content:flex-end;margin-bottom:14px;margin-top:12px;width:100%}.edexcel-dots-leader{border-bottom:2px dotted #94a3b8;flex:1 1;height:1px;margin:0 12px;opacity:.7}.edexcel-answer-group{align-items:center;display:inline-flex;flex-shrink:0;gap:12px}.edexcel-answer-label{color:#000;font-family:Times New Roman,Cambria,Georgia,serif;font-size:17.5px;font-weight:700;letter-spacing:.3px;white-space:nowrap}@media (max-width:640px){.edexcel-answer-row{flex-wrap:wrap;gap:8px;justify-content:flex-start}.edexcel-dots-leader{display:none}.edexcel-answer-group{justify-content:space-between;width:100%}}.bluebook-exam-body,.bluebook-question-container,.bluebook-question-inner-wrap,.bluebook-question-main-area,.bluebook-question-text-body,.interactive-graph-question-box,.interactive-graph-wrapper,.student-mistakes-container{background:#fff!important;background-color:#fff!important}.bluebook-question-text-body:not(:where(.question-clean *)),.bluebook-question-text-body:not(:where(.question-clean *)) .question-html-clean,.bluebook-question-text-body:not(:where(.question-clean *)) .question-html-clean p,.bluebook-question-text-body:not(:where(.question-clean *)) div,.bluebook-question-text-body:not(:where(.question-clean *)) p,.bluebook-question-text-body:not(:where(.question-clean *)) span{color:#000!important;font-family:Times New Roman,Times,Nimbus Roman No9 L,serif!important;font-size:18.5px!important;line-height:1.68!important;text-align:left!important}.bluebook-question-badge{background:#0000!important;border:none!important;border-radius:0!important;box-shadow:none!important;color:#000!important;display:inline-block!important;font-family:Times New Roman,Times,serif!important;font-size:22px!important;font-weight:700!important;line-height:1!important;margin-right:12px!important;padding:0!important}.bluebook-question-header-bar{align-items:baseline!important;border-bottom:none!important;display:flex!important;margin-bottom:12px!important;padding-bottom:4px!important}.exam-table,.q-table,.question-html-clean table{background:#fff!important;border:1.5px solid #000!important;border-collapse:collapse!important;margin:16px auto!important}.exam-table th,.q-table th,.question-html-clean th{font-weight:700!important;padding:9px 18px!important}.exam-table td,.exam-table th,.q-table td,.q-table th,.question-html-clean td,.question-html-clean th{background:#fff!important;border:1px solid #000!important;color:#000!important;font-family:Times New Roman,Times,serif!important;font-size:17px!important;text-align:center!important}.exam-table td,.q-table td,.question-html-clean td{padding:8px 18px!important}.exam-answer-input,.exam-cf-input{background:#fff!important;border:1px solid #000!important;border-radius:0!important;color:#000!important;font-family:Times New Roman,Times,serif!important;font-size:17px!important;font-weight:400!important;outline:none!important;text-align:center!important}.exam-answer-input:focus,.exam-cf-input:focus{border-color:#000!important;box-shadow:0 0 0 1.5px #000!important}.bluebook-top-bar{background:#fff!important;border-bottom:1px solid #cbd5e1!important}.bluebook-practice-banner{background:#fff!important;border-bottom:2px solid #000!important;border-top:1px solid #e2e8f0!important;color:#000!important;font-family:Times New Roman,Times,serif!important;font-size:13.5px!important;font-weight:700!important;letter-spacing:1.5px!important;padding:7px 16px!important;text-transform:uppercase!important}.bluebook-bottom-bar{background:#fff!important;border-top:1.5px solid #000!important;box-shadow:none!important}.bluebook-footer-btn,.bluebook-question-picker-btn{background:#fff!important;border:1px solid #000!important;border-radius:2px!important;color:#000!important;font-family:Times New Roman,Times,serif!important;font-size:14px!important;font-weight:700!important}.bluebook-footer-btn:hover,.bluebook-question-picker-btn:hover{background:#f8fafc!important}.homework-part{border-top:1px solid #e2e8f0;border-top:1px solid var(--line-e2e8f0,#e2e8f0);margin-top:22px;padding-top:16px}.homework-part-text{align-items:flex-start;display:flex;gap:8px}.bluebook-question-text-body .homework-part-label{flex-shrink:0;font-weight:700!important}.homework-part-note{color:#475569;color:var(--fg-475569,#475569);font-size:13px;margin:8px 0 0}.homework-working{--q-text:#1e293b;--q-muted:#64748b;--q-line:#e2e8f0;--q-line-strong:#cbd5e1;--q-accent:#2563eb}.homework-working .question-part-links{align-items:center;display:flex;flex-wrap:wrap;gap:6px 20px;margin-top:8px}.homework-working .question-link{background:none;border:none;color:var(--q-muted);cursor:pointer;font-size:14px;font-weight:500;padding:2px 0}.homework-working .question-link:hover{color:var(--q-text);text-decoration:underline}.homework-working .working-ai-check-btn,.homework-working .working-toggle{align-items:center;display:inline-flex;gap:6px}.homework-working .working-ai-stars,.homework-working .working-ai-stars *{color:var(--q-accent);flex-shrink:0}.homework-working .working-marks-note{background:#eff6ff;border-radius:9px;color:#1d4ed8;font-size:12px;font-weight:500;line-height:18px;padding:0 7px}.homework-working .working-quiet,.homework-working .working-quiet.collapsed{background:#0000;border:none;border-radius:0;box-shadow:none;margin:0;overflow:visible}.homework-working .working-quiet .exam-working-toolbar{background:#f8fafc;border:1px solid var(--q-line);border-bottom:none;border-radius:8px 8px 0 0;display:block;margin-top:10px;padding:6px}.homework-working .working-quiet .exam-working-canvas-wrap{border-left:1px solid var(--q-line);border-right:1px solid var(--q-line)}.homework-working .working-quiet .working-resize-handle{border:1px solid var(--q-line);border-radius:0 0 8px 8px;border-top:none}.homework-working .working-quiet .working-ai-check{background:#0000;border:none;margin-top:8px;padding:0}.homework-working .working-ai-check .working-ai-check-btn{background:#fff;border:1px solid var(--q-line-strong);border-radius:8px;color:var(--q-text)!important;font-size:14px!important;font-weight:500!important}.homework-working .working-ai-check .working-ai-check-btn:hover:not(:disabled){background:#f8fafc}.guided-check-container{align-items:flex-start;display:flex;flex-direction:column;margin-bottom:16px;margin-top:20px}.guided-check-answer-btn{align-items:center;background:#2563eb;border:none;border-radius:8px;box-shadow:0 4px 12px #2563eb40;color:#fff!important;cursor:pointer;display:inline-flex;font-size:14px;font-weight:700;gap:8px;padding:10px 24px;transition:all .2s ease}.guided-check-answer-btn:hover:not(:disabled){background:#1d4ed8;box-shadow:0 6px 16px #2563eb59;transform:translateY(-1px)}.guided-check-answer-btn:active:not(:disabled){transform:translateY(0)}.guided-check-answer-btn:disabled{cursor:not-allowed;opacity:.6}.bluebook-footer-btn.bluebook-check-btn{align-items:center;background:#2563eb;border:none;border-radius:6px;box-shadow:0 2px 8px #2563eb40;color:#fff!important;display:inline-flex;font-size:13.5px;font-weight:800;gap:6px;padding:7px 18px;transition:all .2s ease}.bluebook-footer-btn.bluebook-check-btn:hover:not(:disabled){background:#1d4ed8;box-shadow:0 4px 12px #2563eb59}.bluebook-footer-btn.bluebook-check-btn:disabled{cursor:not-allowed;opacity:.6}.guided-try-again{background:#fff7ed;border:1px solid #fdba74;border-radius:8px;color:#9a3412;font-size:14px;line-height:1.5;margin-bottom:10px;padding:10px 14px}.guided-locked-note{align-items:center;background:#f0fdf4;border:1px solid #86efac;border-radius:8px;color:#166534;display:inline-flex;flex-wrap:wrap;font-size:14px;font-weight:600;gap:8px;padding:9px 14px}.guided-locked-link{background:none;border:none;color:#1d4ed8;cursor:pointer;font-weight:700;padding:0;text-decoration:underline}.guided-locked-link:disabled{display:none}.bluebook-choice-card:disabled{cursor:not-allowed;opacity:.75}.bluebook-choice-card.selected:disabled{opacity:1}:root[data-theme=dark]{--bluebook-bar:#475569;--bluebook-bar-raised:#536379;--bluebook-bar-line:#64748b;--bluebook-bar-btn:#5b6b82;--bluebook-bar-btn-hover:#66768e;--bluebook-bar-btn-line:#7a8aa0}:root[data-theme=dark] .bluebook-top-bar{background:var(--bluebook-bar)!important;border-bottom:1px solid var(--bluebook-bar-line)!important}:root[data-theme=dark] .bluebook-practice-banner{background:var(--bluebook-bar-raised)!important;border-bottom:1px solid var(--bluebook-bar-line)!important;border-top:none!important;color:#fff!important}:root[data-theme=dark] .bluebook-bottom-bar{background:var(--bluebook-bar)!important;border-top:1px solid var(--bluebook-bar-line)!important}:root[data-theme=dark] .bluebook-directions-dropdown,:root[data-theme=dark] .bluebook-tool-item{color:#fff}:root[data-theme=dark] .bluebook-directions-dropdown:hover,:root[data-theme=dark] .bluebook-tool-item:hover{background:var(--bluebook-bar-raised)}:root[data-theme=dark] .bluebook-timer-capsule{background:var(--bluebook-bar-raised);border-color:var(--bluebook-bar-line);color:#fff}:root[data-theme=dark] .bluebook-timer-toggle{background:var(--bluebook-bar);border-color:var(--bluebook-bar-line);color:#fff}:root[data-theme=dark] .bluebook-exit-btn{background:#ef444447;border-color:#faa9;color:#ffe1e1}:root[data-theme=dark] .bluebook-exit-btn:hover{background:#ef4444;color:#fff}:root[data-theme=dark] .bluebook-footer-btn,:root[data-theme=dark] .bluebook-question-picker-btn{background:var(--bluebook-bar-btn)!important;border:1px solid var(--bluebook-bar-btn-line)!important;color:#fff!important}:root[data-theme=dark] .bluebook-footer-btn:hover,:root[data-theme=dark] .bluebook-question-picker-btn:hover{background:var(--bluebook-bar-btn-hover)!important}:root[data-theme=dark] .bluebook-palette-modal{background:var(--bg-card);border-color:var(--border-dark)}:root[data-theme=dark] .bluebook-palette-modal-header{border-bottom-color:var(--bg-card-header);color:var(--text-main)}:root[data-theme=dark] .bluebook-palette-close{color:var(--text-subtle)}:root[data-theme=dark] .bluebook-palette-num{background:var(--bg-card-header);border-color:var(--border-dark);color:var(--text-main)}:root[data-theme=dark] .bluebook-palette-num:hover{border-color:var(--accent-light);color:var(--text-main)}:root[data-theme=dark] .bluebook-palette-num.current{background:var(--accent-primary);border-color:var(--accent-primary);color:#fff}:root[data-theme=dark] .bluebook-exam-body,:root[data-theme=dark] .bluebook-question-main-area{background:#f6f7f9}:root[data-theme=dark] .bluebook-end-exam-footer-btn{background:#ef444447!important;border-color:#faa9!important;color:#ffe1e1!important}.homework-working-only{align-items:center;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between}.homework-working-only .homework-part-note{flex:1 1 260px;margin:0}.homework-working-only .text-error{flex-basis:100%}.question-html,.question-html-clean{background-color:#fff!important;box-sizing:border-box;color:#000!important;font-family:Times New Roman,Times,Nimbus Roman No9 L,serif!important;font-size:18.5px!important;letter-spacing:0;line-height:1.68!important;max-width:100%;overflow-wrap:break-word;padding:4px 0;white-space:normal;word-break:break-word}.bluebook-choice-card,.bluebook-choice-card *,.bluebook-choice-card .question-html-clean,.bluebook-choice-card .question-html-clean *,.bluebook-question-text-body,.bluebook-question-text-body *,.bluebook-question-text-body .question-html-clean,.bluebook-question-text-body .question-html-clean *{color:#0f172a!important}:root[data-theme=dark] .form-body-list .question-html-clean,:root[data-theme=dark] .form-body-list .question-html-clean *{color:#f8fafc;color:var(--text-main,#f8fafc)}.question-html-clean:dir(rtl),.question-html-clean[dir=rtl],.question-html:dir(rtl),.question-html[dir=rtl]{direction:rtl;font-family:Noto Sans Arabic,Arial,sans-serif;text-align:right}.question-html h1,.question-html-clean h1{font-size:1.35em;margin:.8em 0 .4em}.question-html h1,.question-html h2,.question-html-clean h1,.question-html-clean h2{color:#000!important;font-family:Times New Roman,Times,serif!important;font-weight:700}.question-html h2,.question-html-clean h2{font-size:1.2em;margin:.7em 0 .3em}.question-html h3,.question-html-clean h3{color:#000!important;font-family:Times New Roman,Times,serif!important;font-size:1.05em;font-weight:700;margin:.6em 0 .3em}.question-html p,.question-html-clean p{color:#000!important;font-family:Times New Roman,Times,serif!important;font-size:18.5px!important;line-height:1.68;margin:.6em 0;text-align:left!important}.question-html b,.question-html strong,.question-html-clean b,.question-html-clean strong{font-weight:700}.question-html em,.question-html i,.question-html-clean em,.question-html-clean i{font-style:italic}.question-html u,.question-html-clean u{text-decoration:underline}.question-html ol,.question-html ul,.question-html-clean ol,.question-html-clean ul{margin:.5em 0;padding-left:1.6em}.question-html li,.question-html-clean li{margin:.3em 0}.question-html img,.question-html-clean img{border:1px solid var(--border-light,var(--text-main-lighter));border-radius:8px;display:block;height:auto!important;margin:.6em auto;max-height:380px;max-width:100%!important;object-fit:contain;width:auto!important}.question-html blockquote,.question-html-clean blockquote{background:#eff6ff;background:var(--sat-light-blue,#eff6ff);border-left:3px solid var(--sat-blue,var(--accent-primary));border-radius:0 10px 10px 0;border-radius:0 var(--radius,10px) var(--radius,10px) 0;color:var(--text-dim);color:var(--text-muted,var(--text-dim));font-style:italic;margin:.8em 0;padding:.6em 1em}.question-html code,.question-html-clean code{background:var(--text-main-light);background:var(--surface-muted,var(--text-main-light));border:1px solid var(--border-light,var(--text-main-lighter));border-radius:4px;font-family:monospace;font-family:var(--font-mono,monospace);font-size:.88em;padding:.15em .4em}.question-html span,.question-html-clean span{display:inline}.question-html br,.question-html-clean br{content:"";display:block;margin:.2em 0}.question-html-clean:empty,.question-html:empty{display:none}.question-html .katex,.question-html-clean .katex{font-size:1.06em}.question-html .katex-display,.question-html-clean .katex-display{font-size:1.1em;margin:.5em 0;max-width:100%;overflow-x:auto;overflow-y:hidden;padding:.2em 0}.question-html table,.question-html-clean table{background:#fff!important;border:1.5px solid #000!important;border-collapse:collapse!important;box-sizing:border-box!important;display:table!important;font-size:17px!important;margin:14px 0!important;max-width:100%!important;table-layout:auto!important;width:auto!important}.question-html td,.question-html th,.question-html-clean td,.question-html-clean th{background:#fff!important;border:1px solid #000!important;color:#000!important;font-family:Times New Roman,Times,serif!important;font-size:17px!important;overflow-wrap:break-word;padding:8px 16px!important;text-align:left;white-space:nowrap;word-break:normal}.question-html th,.question-html-clean th{background:#fff!important;font-family:Times New Roman,Times,serif!important;font-weight:700!important}@media (max-width:768px){.question-html,.question-html-clean{font-size:17px!important;line-height:1.7}}@media (prefers-contrast:high){.question-html,.question-html-clean{color:#000}}.dfm-cards-container,.edexcel-cards-row{flex-wrap:wrap!important;gap:16px!important;margin:28px auto!important;max-width:100%!important;padding:8px 0!important}.dfm-card,.dfm-cards-container,.edexcel-card-box,.edexcel-cards-row{align-items:center!important;display:flex!important;justify-content:center!important}.dfm-card,.edexcel-card-box{background:#fff!important;border:1.5px solid #111!important;border-radius:3px!important;box-shadow:0 1px 3px #0000000d!important;box-sizing:border-box!important;font-family:Times New Roman,serif,Cambria Math!important;font-size:26px!important;font-weight:600!important;height:60px!important;position:relative!important;transition:all .15s ease-in-out!important;width:74px!important}.dfm-card.fixed-card,.edexcel-card-box.fixed-card{background:#fff!important;border:1.5px solid #111!important;color:#111!important;-webkit-user-select:none!important;user-select:none!important}.dfm-card.empty-card,.edexcel-card-box.empty-card{background:#fff!important;border:1.5px solid #111!important;cursor:text!important;padding:0!important}.dfm-card.empty-card:hover,.edexcel-card-box.empty-card:hover{border-color:#0284c7!important}.dfm-card.empty-card:focus-within,.edexcel-card-box.empty-card:focus-within{border-color:#0284c7!important;box-shadow:0 0 0 3px #0284c747!important}.dfm-card.is-correct,.edexcel-card-box.is-correct{background:#f0fdf4!important;border-color:#16a34a!important}.edexcel-card-box.is-correct .edexcel-card-input{color:#15803d!important}.dfm-card.is-incorrect,.edexcel-card-box.is-incorrect{background:#fef2f2!important;border-color:#dc2626!important}.edexcel-card-box.is-incorrect .edexcel-card-input{color:#b91c1c!important}.dfm-card-input,.edexcel-card-input{background:#0000!important;border:none!important;box-sizing:border-box!important;color:#0284c7!important;cursor:text!important;font-family:Times New Roman,serif,Cambria Math!important;font-size:26px!important;font-weight:600!important;height:100%!important;line-height:1!important;outline:none!important;padding:0!important;text-align:center!important;width:100%!important}.edexcel-card-input::placeholder{color:#0000!important}[data-theme=dark] .edexcel-card-box.fixed-card,body.dark .edexcel-card-box.fixed-card{background:#1e293b!important;border-color:#94a3b8!important;color:#f8fafc!important}[data-theme=dark] .edexcel-card-box.empty-card,body.dark .edexcel-card-box.empty-card{background:#0f172a!important;border-color:#94a3b8!important}[data-theme=dark] .edexcel-card-box.empty-card:focus-within,body.dark .edexcel-card-box.empty-card:focus-within{border-color:#38bdf8!important;box-shadow:0 0 0 3px #38bdf84d!important}[data-theme=dark] .edexcel-card-input,body.dark .edexcel-card-input{color:#38bdf8!important}.dfm-action-bar{display:flex!important;flex-wrap:wrap!important;gap:12px!important;margin:18px 0!important}.dfm-action-bar,.dfm-btn{align-items:center!important}.dfm-btn{border:1px solid #0000!important;border-radius:6px!important;cursor:pointer!important;display:inline-flex!important;font-family:inherit!important;font-size:14px!important;font-weight:600!important;gap:8px!important;justify-content:center!important;line-height:1.4!important;outline:none!important;padding:8px 16px!important;transition:all .15s ease-in-out!important;-webkit-user-select:none!important;user-select:none!important}.dfm-btn-check{background:#0284c7!important;border-color:#0284c7!important;box-shadow:0 1px 2px #0284c733!important;color:#fff!important}.dfm-btn-check:hover{background:#0369a1!important;border-color:#0369a1!important}.dfm-btn-check:active{transform:translateY(1px)!important}.dfm-btn-check:disabled{cursor:not-allowed!important;opacity:.7!important}.dfm-btn-ms{background:#fff!important;border:1px solid #cbd5e1!important;box-shadow:0 1px 2px #0000000d!important;color:#334155!important}.dfm-btn-ms:hover{background:#f8fafc!important;border-color:#94a3b8!important;color:#0f172a!important}.dfm-btn-ms:active{transform:translateY(1px)!important}.dfm-btn-icon{flex-shrink:0!important;height:16px!important;width:16px!important}.dfm-feedback-badge{align-items:center!important;animation:dfmFadeIn .2s ease-out!important;border-radius:6px!important;display:flex!important;font-size:14px!important;font-weight:600!important;gap:10px!important;margin:12px 0 16px!important;padding:10px 16px!important}.dfm-feedback-badge.dfm-feedback-success{background:#ecfdf5!important;border:1px solid #a7f3d0!important;color:#065f46!important}.dfm-feedback-badge.dfm-feedback-error{background:#fef2f2!important;border:1px solid #fecaca!important;color:#991b1b!important}.dfm-mark-scheme-drawer{animation:dfmSlideDown .2s ease-out!important;background:#f8fafc!important;border:1px solid #cbd5e1!important;border-left:4px solid #0284c7!important;border-radius:6px!important;margin:14px 0 20px!important;padding:16px 20px!important}.dfm-ms-title{align-items:center!important;border-bottom:1px solid #e2e8f0!important;color:#0f172a!important;display:flex!important;font-size:15px!important;font-weight:700!important;gap:8px!important;margin-bottom:10px!important;padding-bottom:8px!important}.dfm-ms-content{color:#334155!important;font-size:14px!important;line-height:1.7!important}@keyframes dfmFadeIn{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}@keyframes dfmSlideDown{0%{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}.edexcel-table-cell-box.edexcel-card-box.empty-card,.exam-table .edexcel-card-box.empty-card{background:#0284c70f!important;border:2px dashed #0284c7!important;border-radius:6px!important;font-size:16px!important;height:36px!important;margin:2px auto!important;width:68px!important}.edexcel-table-cell-box.edexcel-card-box.empty-card:focus-within,.exam-table .edexcel-card-box.empty-card:focus-within{background:#fff!important;border-color:#0284c7!important;border-style:solid!important;box-shadow:0 0 0 3px #0284c740!important}.edexcel-table-cell-box.edexcel-card-box.empty-card .edexcel-card-input,.exam-table .edexcel-card-box.empty-card .edexcel-card-input{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif!important;font-size:16px!important;font-weight:700!important}.edexcel-table-cell-box.edexcel-card-box.empty-card .edexcel-card-input::placeholder,.exam-table .edexcel-card-box.empty-card .edexcel-card-input::placeholder{color:#64748b!important;font-size:14px!important;font-weight:500!important;opacity:.75!important}.edexcel-table-cell-box.edexcel-card-box.is-correct,.exam-table .edexcel-card-box.is-correct{background:#dcfce7!important;border:2px solid #16a34a!important}.edexcel-table-cell-box.edexcel-card-box.is-incorrect,.exam-table .edexcel-card-box.is-incorrect{background:#fee2e2!important;border:2px solid #dc2626!important}.copilot-bubble .question-html-clean,.copilot-msg-content.question-html-clean{background-color:initial!important;color:inherit!important;font-family:inherit!important;font-size:inherit!important;line-height:1.55!important}span[style*=inline-block]>span.question-html-clean,td>span.question-html-clean{background-color:initial!important;color:inherit!important}:root[data-theme=dark] span.question-html-clean{border-radius:4px;padding:1px 6px}:root[data-theme=dark] span[style*=inline-block]>span.question-html-clean,:root[data-theme=dark] td>span.question-html-clean{padding:0}.question-pocket{background:#1b3a6b;background:var(--sat-navy,#1b3a6b);border:none;border-radius:50%;bottom:1.5rem;box-shadow:var(--shadow-lg);color:var(--fixed-50);cursor:pointer;font-size:1.56rem;height:68px;left:1.5rem;position:fixed;transition:background-color .15s ease,transform .15s ease;width:68px;z-index:999}.question-pocket:hover{background:var(--accent-primary);background:var(--sat-blue,var(--accent-primary));transform:scale(1.05)}.question-pocket.hide-question-pocket{display:none!important}.pocket-number{background:#dc2626;background:var(--error,#dc2626);border:2px solid #fff;border-radius:50%;height:26px;position:absolute;right:-2px;top:-2px;width:26px}.pocket-number p{color:var(--text-main);font-size:.8rem;font-weight:700;margin:0}.question-end-btn{justify-content:flex-end;margin-top:1.25rem;max-width:1100px;width:100%}.question-end-btn button{align-items:center;background:#1b3a6b;background:var(--sat-navy,#1b3a6b);border:none;border-radius:10px;border-radius:var(--radius,10px);color:var(--fixed-50);cursor:pointer;display:flex;font-family:Inter,sans-serif;font-family:var(--font-body,"Inter",sans-serif);font-size:.95rem;font-weight:600;gap:.5rem;padding:.65rem 2rem;transition:background-color .15s ease}.question-end-btn button:hover{background:var(--accent-primary);background:var(--sat-blue,var(--accent-primary))}.question-end-btn button:disabled{cursor:not-allowed;opacity:.6}.question-list-popup{-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);background:#0f172a8c;inset:0;position:fixed;transition:background-color .3s ease;z-index:5000}.question-list-container{background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));border-radius:20px;border-radius:var(--radius-xl,20px);box-shadow:0 20px 40px rgba(0,0,0,calc(var(--shadow-k)*.15));left:50%;max-height:85vh;overflow-y:auto;padding:2.5rem;position:absolute;top:60px;transform:translateX(-50%);transition:top .4s cubic-bezier(.34,1.2,.64,1);width:min(1100px,96vw)}.update-popup-head p{font-size:1.6rem}.question-list-right-side{flex-wrap:wrap;gap:.6rem}.question-list-right-side button{background:var(--text-main-light);background:var(--surface-muted,var(--text-main-light));border:1px solid var(--border,var(--text-muted));border-radius:6px;border-radius:var(--radius-sm,6px);color:var(--bg-card);color:var(--text,var(--bg-card));cursor:pointer;font-family:Inter,sans-serif;font-family:var(--font-body,"Inter",sans-serif);font-size:.8rem;font-weight:500;padding:.4rem .8rem;transition:all .15s ease}.question-list-right-side button:hover{background:var(--bg-fef2f2);background:var(--error-bg,var(--bg-fef2f2));border-color:#dc2626;border-color:var(--error,#dc2626);color:#dc2626;color:var(--error,#dc2626)}.question-list-close{align-items:center;border:1px solid var(--border,var(--text-muted));border-radius:50%;color:var(--text-dim);color:var(--text-muted,var(--text-dim));cursor:pointer;display:flex;flex-shrink:0;font-size:1rem;height:28px;justify-content:center;transition:all .15s ease;width:28px}.question-list-close:hover{background:var(--bg-fef2f2);background:var(--error-bg,var(--bg-fef2f2));border-color:#dc2626;border-color:var(--error,#dc2626);color:#dc2626;color:var(--error,#dc2626)}.force-flash-toggle{align-items:center;background:var(--text-main-light);background:var(--surface-muted,var(--text-main-light));border:1px solid var(--border,var(--text-muted));border-radius:20px;color:var(--text-dim);color:var(--text-muted,var(--text-dim));cursor:pointer;display:flex;font-size:.8rem;font-weight:600;gap:6px;padding:6px 12px;transition:all .15s ease}.force-flash-toggle.force-flash-active{background:var(--bg-ecfdf5);border-color:#16a34a;border-color:var(--success,#16a34a);color:var(--success-text)}.add-to-popup-body{margin-bottom:1rem;max-height:72vh;overflow-y:auto;padding-right:2px}.question-form-body.form-body-list{background:#223149;background:var(--surface,#223149);border:1px solid var(--border-light,var(--line-334155));border-radius:10px;border-radius:var(--radius,10px);color:#f8fafc;color:var(--text-main,#f8fafc);margin-bottom:.6rem;padding:.85rem 1rem;position:relative}:root[data-theme=light] .question-form-body.form-body-list{background:#f8fafc;border-color:#e2e8f0;color:#0f172a}.remove-question{align-items:center;background:var(--bg-fef2f2);background:var(--error-bg,var(--bg-fef2f2));border:1px solid var(--line-fecaca);border-radius:50%;cursor:pointer;display:flex;height:26px;justify-content:center;position:absolute;right:8px;top:8px;transition:background .15s ease;width:26px}.remove-question i{color:var(--fg-dc2626);color:var(--error-text,var(--fg-dc2626));font-size:.75rem}.remove-question:hover{background:var(--bg-fee2e2)}.assignment-title,.timer{margin-bottom:.75rem}.assignment-title p,.timer p{color:var(--text-dim);color:var(--text-muted,var(--text-dim));font-size:.75rem;font-weight:700;letter-spacing:.06em;margin-bottom:.35rem;text-transform:uppercase}.assignment-title input,.timer input{background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));border:1px solid var(--border,var(--text-muted));border-radius:6px;border-radius:var(--radius-sm,6px);color:var(--bg-card);color:var(--text,var(--bg-card));font-family:Inter,sans-serif;font-family:var(--font-body,"Inter",sans-serif);font-size:.9rem;outline:none;padding:8px 12px;transition:border-color .15s ease;width:100%}.assignment-title input:focus,.timer input:focus{border-color:var(--sat-blue,var(--accent-primary));box-shadow:0 0 0 3px #2563eb1a}.date-faild{gap:1rem}.date-faild>div{flex:1 1}.select-container{align-items:flex-end;gap:.75rem;margin-bottom:.75rem}.select-class select{background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));border:1px solid var(--border,var(--text-muted));border-radius:6px;border-radius:var(--radius-sm,6px);color:var(--bg-card);color:var(--text,var(--bg-card));outline:none;padding:8px 12px;width:100%}.select-class select,.select-container button{font-family:Inter,sans-serif;font-family:var(--font-body,"Inter",sans-serif);font-size:.9rem}.select-container button{background:#1b3a6b;background:var(--sat-navy,#1b3a6b);border:none;border-radius:6px;border-radius:var(--radius-sm,6px);color:var(--fixed-50);cursor:pointer;font-weight:600;padding:8px 14px;transition:background-color .15s ease;white-space:nowrap}.select-container button:hover{background:var(--accent-primary);background:var(--sat-blue,var(--accent-primary))}.class-selector-container{gap:.5rem;margin-bottom:.75rem}.class-selector{align-items:center;background:var(--bg-eff6ff);background:var(--sat-light-blue,var(--bg-eff6ff));border:1px solid var(--line-bfdbfe);border-radius:20px;display:flex;gap:.4rem;padding:4px 10px 4px 12px}.class-selector p:first-child{color:var(--fg-1b3a6b);color:var(--sat-navy-text,var(--fg-1b3a6b));font-size:.82rem;font-weight:600;margin:0}.class-selector>div{align-items:center;background:#1b3a6b;background:var(--sat-navy,#1b3a6b);border-radius:50%;cursor:pointer;display:flex;height:18px;justify-content:center;width:18px}.class-selector>div p{color:var(--text-main);font-size:.65rem;font-weight:700;line-height:1;margin:0}.update-popup-footer{border-top:1px solid var(--border-light,var(--text-main-lighter));gap:.5rem;margin-top:.5rem}.result-popup{background:#0f172a99}.result-popup-container{background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));transition:all .35s cubic-bezier(.34,1.2,.64,1);width:min(520px,92vw)}.result-popup-container.expanded{max-height:88vh!important;overflow-y:auto!important;padding:2rem 2.25rem!important;top:40px!important;width:min(920px,96vw)!important}.detailed-correction{box-sizing:border-box!important;max-width:100%!important}.detailed-correction img{border-radius:6px;box-sizing:border-box;display:block;height:auto!important;margin:10px auto;max-width:100%!important}.detailed-correction table{border-collapse:collapse;box-sizing:border-box;max-width:100%!important;width:100%!important}.detailed-correction td,.detailed-correction th{font-size:13.5px!important;padding:6px 10px!important;word-break:normal}.result-popup-head{margin-bottom:1.25rem}.result-popup-head img{height:72px;width:72px}.result-popup-head>p{color:var(--bg-card);color:var(--text,var(--bg-card));font-size:1rem;font-weight:700;margin:0}.result-popup-body th{font-size:.75rem;font-weight:700;padding:.55rem 1rem}.result-popup-body td{font-size:1.2rem;padding:.85rem 1rem}.result-popup-body .button{display:block;margin:0 auto}@media (max-width:600px){.question-list-container{padding:1.25rem 1rem}.update-popup-head p{font-size:.9rem}.question-end-btn button{font-size:.9rem;padding:.6rem 1.5rem}.result-popup-container{padding:1.5rem 1.25rem;top:50px}}.question-clean{--q-text:#1e293b;--q-muted:#64748b;--q-line:#e2e8f0;--q-line-strong:#cbd5e1;--q-accent:#2563eb;--q-accent-dark:#1d4ed8;--q-right:#15803d;--q-wrong:#b91c1c;font-family:var(--font-body);height:100dvh}body:has(.question-clean){overflow:hidden}#root:has(.question-clean){height:100dvh;overflow:clip}.question-icon-btn{align-items:center;background:#0000;border:none;border-radius:8px;color:var(--q-muted);cursor:pointer;display:inline-flex;font-size:16px;height:36px;justify-content:center;padding:0;width:36px}.question-icon-btn.active,.question-icon-btn:hover{background:#f1f5f9;color:var(--q-text)}.question-icon-btn:focus-visible,.question-link:focus-visible,.question-menu-item:focus-visible,.question-menu-text-btn:focus-visible{outline:2px solid var(--q-accent);outline-offset:2px}.question-icon-btn.flagged{color:var(--q-accent)}.question-clean .bluebook-question-text-body .question-link,.question-link{background:none;border:none;color:var(--q-muted)!important;cursor:pointer;font-family:var(--font-body)!important;font-size:14px!important;font-weight:500;padding:2px 0}.question-clean .bluebook-question-text-body .question-link:hover,.question-link:hover{color:var(--q-text)!important;text-decoration:underline}.question-menu{display:inline-flex;position:relative}.question-menu-text-btn{background:#fff;border:1px solid var(--q-line-strong);border-radius:8px;color:var(--q-text);cursor:pointer;font-family:var(--font-body);font-size:13px;font-weight:500;padding:6px 12px}.question-menu-text-btn:hover{background:#f8fafc}.question-menu-list{background:#fff;border:1px solid var(--q-line);border-radius:10px;box-shadow:0 8px 24px #0f172a24;min-width:200px;padding:4px;position:absolute;right:0;top:calc(100% + 6px);z-index:60}.question-menu-item{align-items:center;background:none;border:none;border-radius:6px;color:var(--q-text);cursor:pointer;display:flex;font-family:var(--font-body);font-size:14px;font-weight:400;gap:10px;padding:8px 10px;text-align:left;width:100%}.question-menu-item i{color:var(--q-muted);text-align:center;width:16px}.question-menu-item:hover:not(:disabled){background:#f1f5f9}.question-menu-item:disabled{cursor:not-allowed;opacity:.6}.question-menu-item.danger,.question-menu-item.danger i{color:var(--q-wrong)}.question-clean .question-topbar{border-bottom:none!important;gap:8px;height:52px;padding:0 12px;position:relative;z-index:40}.question-topbar-title{color:var(--q-muted);flex:1 1;font-size:14px;font-weight:500;min-width:0;overflow:hidden;text-align:center;text-overflow:ellipsis;white-space:nowrap}.question-topbar-tools{align-items:center;display:flex;gap:2px}.question-progress{background:var(--q-line);flex-shrink:0;height:3px}.question-progress-fill{background:var(--q-accent);height:100%;transition:width .25s ease}.question-directions{background:#f8fafc;border-bottom:1px solid var(--q-line);color:#475569;flex-shrink:0;font-size:14px;line-height:1.6;padding:12px 24px}:root[data-theme=dark] .question-topbar .question-icon-btn,:root[data-theme=dark] .question-topbar-title{color:var(--text-main-lighter)}:root[data-theme=dark] .question-topbar .question-icon-btn.active,:root[data-theme=dark] .question-topbar .question-icon-btn:hover{background:var(--bg-card-header);color:var(--text-main)}:root[data-theme=dark] .question-clean .question-progress{background:var(--border-dark)}.question-clean .bluebook-question-main-area{padding:28px 24px 40px;scrollbar-gutter:stable both-edges}.question-clean .bluebook-question-inner-wrap{gap:8px;max-width:720px}.question-clean .bluebook-question-header-bar{align-items:center!important;gap:12px;margin-bottom:8px!important;padding-bottom:0!important}.question-clean .bluebook-question-badge{color:var(--q-text)!important;font-family:var(--font-body)!important;font-size:18px!important;font-weight:600!important;margin-right:0!important}.question-header-actions{align-items:center;display:flex;gap:6px;margin-left:auto}.question-difficulty,.question-score{color:var(--q-muted);font-size:13px}.question-score{font-weight:500}.question-score.full{color:var(--q-right)}.question-score.none{color:var(--q-wrong)}.question-clean .bluebook-question-text-body{font-family:var(--font-body);font-size:17.5px;line-height:1.7;margin-bottom:0}.question-clean .bluebook-question-text-body *,.question-clean .bluebook-question-text-body .katex *,.question-clean .bluebook-question-text-body .question-html-clean,.question-clean .bluebook-question-text-body .question-html-clean *{color:var(--q-text)!important}.question-clean .edexcel-part-statement,.question-clean .question-html-clean,.question-clean .question-html-clean h1,.question-clean .question-html-clean h2,.question-clean .question-html-clean h3,.question-clean .question-html-clean p{font-family:var(--font-body)!important;font-size:17.5px!important;line-height:1.7!important}.question-clean .bluebook-question-text-body .question-html-clean .katex{font-size:1.18em!important}.question-clean .question-html-clean p:first-child{margin-top:0}.question-clean .question-html-clean p:last-child{margin-bottom:0}.question-clean .question-html-clean table{border:1px solid var(--q-line-strong)!important}.question-clean .question-html-clean td,.question-clean .question-html-clean th{border:1px solid var(--q-line-strong)!important;font-family:var(--font-body)!important;font-size:16px!important}.question-clean .question-html-clean th{background:#f8fafc!important;font-weight:600!important}.question-clean .bluebook-question-text-body .dfm-card,.question-clean .bluebook-question-text-body .dfm-card-input,.question-clean .bluebook-question-text-body .edexcel-card-box,.question-clean .bluebook-question-text-body .edexcel-card-input{font-family:var(--font-body)!important}.question-clean .edexcel-intro-statement{margin-bottom:8px}.question-clean .edexcel-part-block{border-radius:0;margin:20px 0 0;padding:0}.question-clean .edexcel-part-header{font-size:17.5px;gap:10px;line-height:1.7}.question-clean .edexcel-part-letter{font-family:var(--font-body)!important;font-size:17.5px!important;font-weight:600!important;line-height:1.7!important;padding-top:4px}.question-clean .edexcel-part-statement{min-width:0}.question-clean .bluebook-question-text-body .question-part-marks{color:var(--q-muted)!important;flex-shrink:0;font-size:13px!important;line-height:1.7!important;padding-top:6px;white-space:nowrap}.question-clean .edexcel-answer-row{justify-content:flex-start;margin:10px 0 0}.question-clean .edexcel-answer-group{flex-shrink:1;gap:8px;min-width:0}.question-clean .edexcel-answer-label{font-family:var(--font-body)!important;font-size:17.5px!important;font-weight:500!important}.question-clean .edexcel-mathlive-field{border:1px solid var(--q-line-strong);border-radius:8px;box-shadow:none;font-size:18px;min-height:44px}.question-clean .edexcel-mathlive-field:hover{border-color:#94a3b8;box-shadow:none}.question-clean .bluebook-question-text-body .dfm-btn-check,.question-clean .bluebook-question-text-body .drfrost-check-btn{background:#fff!important;border:1px solid var(--q-line-strong)!important;border-radius:8px!important;box-shadow:none!important;color:var(--q-text)!important;flex-shrink:0;font-family:var(--font-body)!important;font-size:14px!important;font-weight:500!important;height:44px;padding:0 16px!important;transform:none!important}.question-clean .bluebook-question-text-body .dfm-btn-check:hover,.question-clean .bluebook-question-text-body .drfrost-check-btn:hover{background:#f8fafc!important;border-color:#94a3b8!important}.question-clean .dfm-action-bar{gap:16px!important;margin:10px 0!important}.question-part-links{align-items:center;display:flex;flex-wrap:wrap;gap:6px 20px;margin-top:8px}.question-clean .question-plotted-points{background:#f8fafc;border:1px solid var(--q-line);border-radius:8px;color:var(--q-text);font-family:var(--font-body);font-size:14px;min-width:min(320px,100%);padding:8px 12px}.question-clean .dfm-feedback-badge,.question-clean .drfrost-part-feedback-box{background:#f8fafc!important;border:none!important;border-radius:8px!important;font-family:var(--font-body);font-size:14px!important;padding:10px 14px!important}.question-clean .bluebook-question-text-body .dfm-feedback-badge *,.question-clean .bluebook-question-text-body .drfrost-part-feedback-box *{font-size:14px!important}.question-clean .drfrost-part-feedback-box{margin:0!important}.question-clean .drfrost-part-feedback-box>span:last-child{background:none!important;border:none!important;padding:0!important}.question-clean .bluebook-question-text-body .dfm-feedback-success,.question-clean .bluebook-question-text-body .dfm-feedback-success *,.question-clean .bluebook-question-text-body .drfrost-part-feedback-box.correct,.question-clean .bluebook-question-text-body .drfrost-part-feedback-box.correct *{color:var(--q-right)!important}.question-clean .bluebook-question-text-body .dfm-feedback-error,.question-clean .bluebook-question-text-body .dfm-feedback-error *,.question-clean .bluebook-question-text-body .drfrost-part-feedback-box.incorrect,.question-clean .bluebook-question-text-body .drfrost-part-feedback-box.incorrect *,.question-clean .bluebook-question-text-body .drfrost-part-feedback-box.try-again,.question-clean .bluebook-question-text-body .drfrost-part-feedback-box.try-again *{color:var(--q-wrong)!important}.question-clean .bluebook-question-text-body .working-toggle{align-items:center;display:inline-flex;gap:6px}.question-clean .bluebook-question-text-body .working-ai-stars,.question-clean .bluebook-question-text-body .working-ai-stars *{color:var(--q-accent)!important;flex-shrink:0}.question-clean .bluebook-question-text-body .working-marks-note{background:#eff6ff;border-radius:9px;color:#1d4ed8!important;font-size:12px!important;font-weight:500;line-height:18px!important;padding:0 7px}.question-clean .working-ai-check-btn{align-items:center;display:inline-flex;gap:6px}.question-clean .bluebook-question-text-body .question-html-clean svg,.question-clean .bluebook-question-text-body img,.question-clean .question-html-clean :is(div,figure,center):has(svg,img){background:#0000!important;border:none!important;border-radius:0!important;box-shadow:none!important}.question-clean .question-html-clean svg>rect[x="0"][y="0"][width="100%"][height="100%"]{stroke:none!important}.question-clean .bluebook-question-text-body .working-snip-picture{background:#fff!important}.question-clean .ge-root,.question-clean .sparx-graph-wrapper,.question-clean .tree-diagram{background:#0000;border:none;border-radius:0;box-shadow:none;overflow:visible}.question-clean .ge-root:focus-visible{box-shadow:none}.question-clean .sparx-graph-wrapper{margin:12px 0}.question-clean .ge-toolbar,.question-clean .sparx-toolbar{background:#0000;border-bottom:none;padding:0 0 10px}.question-clean .ge-canvas,.question-clean .sparx-canvas-container{background:#0000;padding:0}.question-clean .sparx-footer-bar{background:#0000;border-top:none;padding:8px 0 0}.question-clean .ge-btn:not(.is-active),.question-clean .sparx-icon-btn,.question-clean .sparx-tool-btn:not(.active){border:1px solid var(--q-line-strong)}.question-clean .ge-btn,.question-clean .sparx-icon-btn,.question-clean .sparx-tool-btn{border-radius:6px;font-family:var(--font-body);font-size:13px;font-weight:500}.question-mark-scheme{margin-top:16px}.question-clean .dfm-mark-scheme-drawer,.question-clean .drfrost-part-markscheme-drawer{background:#f8fafc!important;border:none!important;border-radius:8px!important;margin:10px 0!important;padding:14px 16px!important}.question-clean .dfm-ms-title,.question-clean .drfrost-part-markscheme-title{border:none!important;font-size:13px!important;font-weight:600!important;margin-bottom:6px!important;padding-bottom:0!important}.question-clean .dfm-mark-scheme-drawer .question-html-clean,.question-clean .dfm-mark-scheme-drawer .question-html-clean p,.question-clean .drfrost-part-markscheme-drawer .question-html-clean,.question-clean .drfrost-part-markscheme-drawer .question-html-clean p{background:#0000!important;font-size:15.5px!important}.question-clean .bluebook-choice-card,.question-clean .bluebook-choice-card :not(.katex,.katex *){font-family:var(--font-body)!important}.question-clean .bluebook-question-text-body .sparx-tool-btn.active,.question-clean .bluebook-question-text-body .sparx-tool-btn.active *{color:#fff!important}.question-clean .working-quiet{background:#0000;border:none;border-radius:0;box-shadow:none;margin:0;overflow:visible}.question-clean .working-quiet.collapsed{margin:0}.question-clean .working-quiet .exam-working-toolbar{background:#f8fafc;border:1px solid var(--q-line);border-bottom:none;border-radius:8px 8px 0 0;display:block;margin-top:10px;padding:6px}.question-clean .working-quiet .exam-working-canvas-wrap{border-left:1px solid var(--q-line);border-right:1px solid var(--q-line)}.question-clean .working-quiet .working-resize-handle{border:1px solid var(--q-line);border-radius:0 0 8px 8px;border-top:none}.question-clean .working-quiet .working-ai-check{background:#0000;border:none;margin-top:8px;padding:0}.question-clean .bluebook-question-text-body .working-ai-check .working-ai-check-btn{background:#fff;border:1px solid var(--q-line-strong);border-radius:8px;color:var(--q-text)!important;font-family:var(--font-body)!important;font-size:14px!important;font-weight:500!important}.question-clean .bluebook-question-text-body .working-ai-check .working-ai-check-btn:hover:not(:disabled){background:#f8fafc}.question-keypad-slot{background:#f8fafc;flex-shrink:0}.question-keypad-slot:not(:empty){border-top:1px solid var(--q-line)}.question-keypad-slot .pro-math-dock{border:none;border-radius:0;box-shadow:none;margin:0 auto;max-width:680px}.question-keypad-slot .pro-dock-header{border-bottom:none;flex-wrap:nowrap;padding:4px 8px}@media (min-width:641px){.question-keypad-slot .pro-tab{padding:5px 11px}.question-keypad-slot .pro-dock-body{padding:4px 8px 8px}.question-keypad-slot .pro-split{gap:10px}.question-keypad-slot .pro-alpha,.question-keypad-slot .pro-pad{gap:5px}.question-keypad-slot .pro-key{height:38px}}@media (min-width:641px) and (pointer:coarse){.question-keypad-slot .pro-key{height:40px}}body:has(.question-clean) .ai-copilot-trigger-wrapper,body:has(.question-clean) .copilot-floating-btn{margin-bottom:64px;margin-top:-64px}body:has(.question-clean) .ai-copilot-trigger-wrapper{margin-left:172px}body:has(.question-clean) .ai-copilot-trigger{background:#fff;border:1px solid #cbd5e1;box-shadow:0 2px 8px #0f172a1f;color:var(--accent-primary);padding:8px}body:has(.question-clean) .ai-copilot-trigger .trigger-drag-handle,body:has(.question-clean) .ai-copilot-trigger .trigger-pulse,body:has(.question-clean) .ai-copilot-trigger>span{display:none}body:has(.question-keypad-slot:not(:empty)) .ai-copilot-trigger-wrapper,body:has(.question-keypad-slot:not(:empty)) .copilot-floating-btn{display:none}.question-clean .bluebook-footer-btn,.question-clean .bluebook-question-picker-btn{border:1px solid var(--q-line-strong)!important;border-radius:8px!important;font-family:var(--font-body)!important;font-size:14px!important;font-weight:500!important}.question-clean .bluebook-bottom-bar{border-top:1px solid var(--q-line)!important}.question-clean .bluebook-footer-btn:not(.secondary){background:var(--q-accent)!important;border-color:var(--q-accent)!important;color:#fff!important}.question-clean .bluebook-footer-btn:not(.secondary):hover{background:var(--q-accent-dark)!important}:root[data-theme=dark] .question-clean .bluebook-bottom-bar{border-top:1px solid var(--border-dark)!important}@media (max-width:640px){.question-clean .bluebook-question-main-area{padding:16px 16px 28px}.question-clean .edexcel-part-statement,.question-clean .question-html-clean,.question-clean .question-html-clean p{font-size:16.5px!important}.question-clean .edexcel-answer-row{flex-wrap:nowrap}.question-clean .edexcel-answer-group{justify-content:flex-start}.question-clean .edexcel-math-box-wrapper{flex:1 1;min-width:0}}.question-clock{align-items:center;background:#f1f5f9;border:1px solid #0000;border-radius:8px;color:var(--q-text);cursor:pointer;display:inline-flex;font-family:var(--font-body);font-size:13px;gap:6px;height:34px;padding:0 12px;white-space:nowrap}.question-clock:hover{border-color:var(--q-line-strong)}.question-clock .question-clock-label{color:var(--q-muted)}.question-clock .question-clock-time{font-feature-settings:"tnum";font-variant-numeric:tabular-nums;font-weight:700}.question-clock.low{background:#fef2f2;color:#b91c1c}.question-clock.low .question-clock-time,.question-clock.low i{color:#b91c1c}.question-clock.is-hidden{background:#0000}:root[data-theme=dark] .question-clock{background:#ffffff14;color:var(--text-main)}.question-time-warning{background:#b91c1c;border-radius:10px;box-shadow:0 8px 24px #0f172a40;color:#fff;font-size:15px;font-weight:600;left:50%;padding:10px 18px;position:fixed;top:64px;transform:translateX(-50%);z-index:9000}.question-part-mark{border:1px solid;border-radius:12px;flex-shrink:0;font-size:12px;font-weight:700;margin-left:12px;padding:2px 8px}.question-part-mark.full{background:#dcfce7;border-color:#86efac;color:#15803d}.question-part-mark.some{background:#fef3c7;border-color:#fde047;color:#b45309}.question-part-mark.none{background:#fee2e2;border-color:#fca5a5;color:#b91c1c}.question-clean .bluebook-question-text-body .question-part-mark.full{color:#15803d!important}.question-clean .bluebook-question-text-body .question-part-mark.some{color:#b45309!important}.question-clean .bluebook-question-text-body .question-part-mark.none{color:#b91c1c!important}.question-clean .edexcel-answer-row.working-only-row{flex-wrap:wrap;gap:10px;justify-content:space-between}.question-clean .working-only-row .homework-part-note{flex:1 1 260px;margin:0}@media (max-width:640px){.question-clock .question-clock-label{display:none}}:root[data-theme=dark] .question-clock .question-clock-label{color:var(--text-main-lighter)}:root[data-theme=dark] .question-clock.low{background:#dc262640;color:#fecaca}:root[data-theme=dark] .question-clock.low .question-clock-time,:root[data-theme=dark] .question-clock.low i{color:#fecaca}.difficulty-tabs-bar{background:#fff;border-bottom:1px solid #e2e8f0;display:flex;flex-shrink:0;gap:8px;justify-content:center;overflow-x:auto;padding:8px 12px;scrollbar-width:none}.difficulty-tabs-bar::-webkit-scrollbar{display:none}.difficulty-tab{align-items:center;background:#e2e8f0;border:none;border-radius:20px;color:#475569;cursor:pointer;display:inline-flex;flex-shrink:0;font-size:13px;font-weight:700;gap:6px;line-height:1.2;padding:6px 14px;transition:background .2s ease,color .2s ease;white-space:nowrap}.difficulty-tab:hover:not(:disabled):not(.active){background:#cbd5e1}.difficulty-tab.active{background:#2563eb;background:var(--accent-primary,#2563eb);color:#fff}.difficulty-tab:disabled{cursor:not-allowed;opacity:.45}.difficulty-tab:focus-visible{outline:2px solid #2563eb;outline:2px solid var(--accent-primary,#2563eb);outline-offset:2px}.difficulty-tab-count{background:#0f172a14;border-radius:10px;font-size:11px;font-weight:700;min-width:20px;padding:1px 6px;text-align:center}.difficulty-tab.active .difficulty-tab-count{background:#ffffff40}.difficulty-tabs-choice{margin-bottom:20px}.difficulty-tabs-choice-label{color:#64748b;font-size:13px;font-weight:700;margin-bottom:8px}.difficulty-tabs-bar.in-modal{background:#0000;border-bottom:none;flex-wrap:wrap;overflow:visible;padding:0}@media (max-width:600px){.difficulty-tabs-bar:not(.in-modal){gap:6px;justify-content:flex-start}.difficulty-tab{font-size:12px;padding:6px 11px}}:root[data-theme=dark] .difficulty-tabs-bar:not(.in-modal){background:#0f172a;background:var(--bg-card,#0f172a);border-bottom-color:#334155;border-bottom-color:var(--border-dark,#334155)}:root[data-theme=dark] .difficulty-tab:not(.active){background:#1e293b;background:var(--bg-card-header,#1e293b);color:#cbd5e1;color:var(--text-main-lighter,#cbd5e1)}:root[data-theme=dark] .difficulty-tab:hover:not(:disabled):not(.active){background:#334155;background:var(--border-dark,#334155)}:root[data-theme=dark] .difficulty-tab-count{background:#ffffff1a}:root[data-theme=dark] .difficulty-tabs-choice-label{color:#cbd5e1;color:var(--text-main-lighter,#cbd5e1)}.practice-blocked-note{background:var(--warning-bg);border:1px solid var(--warning);border-radius:10px;color:var(--warning-text);font-size:14px;font-weight:600;line-height:1.4;margin:0 0 12px;padding:10px 14px}.verify{height:100vh}.verify-logo{margin-bottom:1.5rem}.verify-logo img{width:200px}.verify-title p{color:var(--fg-282727);font-size:25px}.verify-title{margin-bottom:2rem}.verify-input input{border:1px solid #b8b6b6;border-radius:8px;font-size:1.125rem;height:45px;margin-right:.6rem;outline:none;text-align:center;width:42px}.verify-input input::-webkit-inner-spin-button,.verify-input input::-webkit-outer-spin-button{display:none}.verify-btn{margin-right:.7rem;width:300px}.verify-btn button{background-color:var(--accent-primary);border:none;border-radius:10px;color:var(--fixed-50);cursor:pointer;font-size:1.3rem;font-weight:500;margin-top:1.5rem;padding:.8rem 0;text-align:center;width:100%}.verify-footer{text-align:center}.verify-footer p:first-child{color:#868585;font-size:15px;margin-top:1rem}.verify-footer p:last-child{color:var(--fg-5d17eb);cursor:pointer;font-size:17px;font-weight:450;margin-top:.2rem}.res-pas-email{height:100vh}.res-pas-email-logo{margin-bottom:1.5rem}.res-pas-email-logo img{width:280px}.res-pas-email-title p{color:var(--fg-282727);font-size:25px}.res-pas-email-title{margin-bottom:1.6rem}.res-pas-email-input input{border:1px solid #9a9898;border-radius:20px;font-size:17px;margin-bottom:1.3rem;padding:.8rem 1rem;width:340px}.res-email-btn{animation:anime 16s linear infinite;background:var(--accent-primary);background-size:600%;border-radius:15px;color:#ffffffe6;cursor:pointer;font-size:20px;padding:.6rem 1.5rem;text-align:center;width:340px}.res-pas-code{height:100vh}.res-pas-code-logo{margin-bottom:1.5rem}.res-pas-code-logo img{width:280px}.res-pas-code-title p{color:var(--fg-282727);font-size:25px}.res-pas-code-title{margin-bottom:2rem}.res-pas-code-input input{border:1px solid #b8b6b6;border-radius:8px;font-size:1.125rem;height:45px;margin-right:.6rem;outline:none;text-align:center;width:42px}.res-pas-code-input input::-webkit-inner-spin-button,.res-pas-code-input input::-webkit-outer-spin-button{display:none}.res-pas-code-btn{margin-right:.7rem;width:300px}.res-pas-code-btn button{background-color:var(--accent-primary);border:none;border-radius:10px;color:var(--fixed-50);cursor:pointer;font-size:1.3rem;font-weight:500;margin-top:1.5rem;padding:.8rem 0;text-align:center;width:100%}.reset-password{height:100vh}.reset-password-logo{margin-bottom:1.5rem}.reset-password-logo img{width:280px}.reset-password-title p{color:var(--fg-282727);font-size:25px}.reset-password-title{margin-bottom:1.6rem}.reset-password-input input{border:1px solid #9a9898;border-radius:20px;margin-bottom:1rem;padding:.8rem 1rem;width:340px}.reset-password-btn{animation:anime 16s linear infinite;background:var(--accent-primary);background-size:600%;border-radius:15px;color:#ffffffe6;cursor:pointer;font-size:20px;margin-top:1rem;padding:.6rem 1.5rem;text-align:center;width:340px}@keyframes anime{0%{background-position:0 50%}50%{background-position:100% 50%}to{background-position:0 50%}}.unit-container{background:var(--bg-main);min-height:100vh;padding:2rem 2.5rem}.unit-search-input{-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:var(--bg-card);border:1px solid var(--border);border-radius:.5rem;color:var(--text-main);font-size:1rem;padding:.75rem 1rem;transition:all .3s ease;width:100%}.unit-search-input::placeholder{color:var(--text-muted)}.unit-search-input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px #2e6be633;outline:none}.unit-card{backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);background:var(--bg-card);border:1px solid var(--border);border-radius:1rem;box-shadow:0 8px 32px 0 rgba(0,0,0,calc(var(--shadow-k)*.37));color:var(--text-main);cursor:pointer;margin-bottom:1.25rem;padding:1rem 1.5rem;transition:transform .25s ease,box-shadow .25s ease}.unit-card:hover{box-shadow:0 12px 40px 0 rgba(0,0,0,calc(var(--shadow-k)*.45));transform:translateY(-4px)}.unit-header{align-items:center;display:flex;font-size:1.1rem;font-weight:600;justify-content:space-between}.unit-toggle-icon{color:var(--accent-text);font-size:1.2rem}.unit-chapters{display:flex;flex-direction:column;gap:.5rem;margin-top:.75rem}.unit-chapter-card{background:var(--accent-primary);border-radius:.75rem;color:var(--fixed-50);display:block;font-size:1rem;padding:.6rem 1rem;text-decoration:none;transition:background .3s ease,transform .2s ease}.unit-chapter-card:hover{background:var(--accent-active);transform:translateY(-2px)}.dwon,.unit,.unit-chapter{display:none}@media only screen and (max-width:992px){.unit-container{padding:2rem 1.5rem}}@media only screen and (max-width:768px){.unit-container{padding:2rem 1rem}}.teachers-list-container{background-color:var(--bg-f9f9f9);border-radius:15px;margin:2rem 0;padding:2rem;width:100%}.teachers-list-title{align-items:center;color:var(--fg-333333);display:flex;font-size:1.8rem;gap:.5rem;margin-bottom:2rem}.teachers-empty-state{background:var(--bg-ffffff);border:2px dashed var(--line-e0e0e0);border-radius:10px;padding:3rem 2rem;text-align:center}.teachers-empty-state h3{color:var(--accent-text);font-size:1.5rem;margin-bottom:1rem}.teachers-empty-state p{color:#999;font-size:1rem}.teachers-grid{grid-gap:2rem;display:grid;gap:2rem;grid-template-columns:repeat(auto-fill,minmax(350px,1fr))}.teacher-card{background:var(--bg-ffffff);border:2px solid var(--line-e0e0e0);border-radius:12px;box-shadow:0 4px 12px #0000001a;overflow:hidden;transition:all .3s ease}.teacher-card:hover{border-color:var(--accent-primary);box-shadow:0 8px 20px #667eea26;transform:translateY(-4px)}.teacher-card-header{align-items:center;background:var(--accent-primary);color:#fff;display:flex;justify-content:space-between;padding:1.5rem}.teacher-info h3{font-size:1.3rem;font-weight:700;margin:0}.teacher-meta{font-size:.9rem;margin:.5rem 0 0;opacity:.9}.teacher-actions{align-items:center;display:flex;gap:.5rem}.delete-btn,.expand-btn{align-items:center;background-color:#fff3;border:none;border-radius:6px;color:#fff;cursor:pointer;display:flex;justify-content:center;padding:.5rem;transition:all .3s ease}.delete-btn:hover,.expand-btn:hover{background-color:#fff6;transform:scale(1.1)}.delete-btn:hover{background-color:#ff6b6bcc}.teacher-card-content{max-height:500px;overflow-y:auto;padding:1.5rem}.groups-list{display:flex;flex-direction:column;gap:1.5rem}.group-item{background-color:var(--bg-f9f9f9);border-left:4px solid var(--accent-primary);border-radius:6px;padding:1rem}.group-name{align-items:center;display:flex;gap:.5rem;margin-bottom:1rem}.group-icon{font-size:1.2rem}.group-name h4{color:var(--fg-333333);font-size:1.1rem;font-weight:600;margin:0}.students-list{gap:.5rem}.student-item{align-items:center;background-color:var(--bg-ffffff);border:1px solid var(--line-e0e0e0);border-radius:4px;display:flex;gap:.6rem;padding:.6rem}.student-icon{font-size:1rem}.student-item p{color:var(--fg-666666);font-size:.95rem}.teacher-timestamp{border-top:1px solid var(--line-e0e0e0);margin-top:1rem;padding-top:1rem}.teacher-timestamp small{color:#999;font-size:.8rem}.teacher-card-content::-webkit-scrollbar{width:6px}.teacher-card-content::-webkit-scrollbar-track{background:var(--bg-f1f1f1);border-radius:10px}.teacher-card-content::-webkit-scrollbar-thumb{background:var(--accent-primary);border-radius:10px}.teacher-card-content::-webkit-scrollbar-thumb:hover{background:var(--accent-active)}@media (max-width:1200px){.teachers-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}}@media (max-width:768px){.teachers-list-container{margin:1rem 0;padding:1.5rem}.teachers-list-title{font-size:1.5rem;margin-bottom:1.5rem}.teachers-grid{gap:1.5rem;grid-template-columns:1fr}.teacher-card-header{padding:1rem}.teacher-info h3{font-size:1.1rem}.teacher-card-content{padding:1rem}.group-item{padding:.8rem}.group-name h4{font-size:1rem}.student-item{font-size:.9rem;padding:.5rem}}@media (max-width:480px){.teachers-list-container{padding:1rem}.teachers-list-title{font-size:1.3rem;margin-bottom:1rem}.teacher-card-header{align-items:flex-start;flex-direction:column;gap:1rem}.teacher-actions{align-self:flex-end}.teacher-info h3{font-size:1rem}.teacher-meta{font-size:.8rem}}.dashboard-school{padding:0 2.2rem 6.5rem}.dashboard-school-header{font-size:30px;font-weight:700;line-height:2.2rem;margin-top:1rem;padding-left:.3rem}.dashboard-school-header p:last-child{color:orange}.dashboard-school-body{margin-top:.5rem}.dashboard-school-body a{cursor:pointer;margin-top:.8rem;width:33%}@media only screen and (max-width:1100px){.dashboard-school-header{font-size:25px;line-height:2rem}.dashboard-school-body a{width:50%}}@media only screen and (max-width:768px){.dashboard-school-body a{width:100%}.dashboard-school{padding:0 1.2rem 6.5rem}.dashboard-school-body a{margin-top:.3rem}}@media only screen and (max-width:600px){.dashboard-school{padding:0 1rem 6.5rem}.dashboard-school-header{font-size:19px;line-height:1.3rem;margin:.5rem 0}}@media (min-width:769px){.dashboard-school{padding-top:80px}}.student-container{padding:6.5rem 2.2rem 7rem;position:relative}.student-header{margin-top:.5rem}.student-header input{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;color:var(--text-main);font-size:15px;outline:none;padding:.85rem 1.25rem;transition:all .2s ease;width:97%}.student-header input::placeholder{color:var(--text-subtle)}.student-header input:focus{background:var(--bg-card);border-color:var(--accent-primary);box-shadow:0 0 0 3px #6366f133}.student-header div{background-color:var(--accent-primary);border-radius:50%;color:var(--fixed-50);cursor:pointer;font-size:23px;height:50px;margin-left:.8rem;width:50px}.student-body{margin-top:2rem}.student-name img{margin-right:.3rem;width:22px}.student-body table{border-collapse:collapse;width:100%}.student-header-body tr{color:var(--text-subtle);font-size:15px;font-weight:600}.student-header-body:after{content:"@";display:block;line-height:20px;text-indent:-99999px}.student-header-body td{color:var(--text-subtle);overflow:hidden;padding:.75rem 1rem;text-overflow:ellipsis;white-space:nowrap}.student-row{background:#223149;background:var(--bg-card,#223149);border:1px solid #394e72;border:1px solid var(--border-dark,#394e72);border-radius:12px;box-shadow:0 4px 12px rgba(0,0,0,calc(var(--shadow-k)*.2));font-size:15px;transition:all .2s ease}.student-row:hover{background:#2c3d5a;background:var(--surface-hover,#2c3d5a);border-color:#60a5fa;border-color:var(--accent-light,#60a5fa)}.student-row tr{background:#0000}.student-row td{color:var(--text-muted);font-size:14.5px;overflow:hidden;padding:.95rem 1rem;text-overflow:ellipsis;white-space:nowrap}.student-row td.student-name p{color:#f8fafc;font-weight:600;margin:0}.student-action{color:var(--fg-indigo-400)}.student-action span{align-items:center;display:inline-flex;justify-content:center;transition:transform .15s ease,opacity .15s ease}.student-action span:hover{opacity:.85;transform:scale(1.12)}.student-action span:first-child{color:var(--fg-indigo-400)!important}.student-action span:last-child{color:var(--error-text)!important}.student-footer{bottom:40px;position:absolute}.student-footer button{background:none;background:var(--accent-primary);background-clip:padding-box,border-box;background-origin:padding-box,border-box;border:2px solid #0000;border-radius:20px;cursor:pointer;font-family:system-ui;font-size:1.1rem;height:50px;margin-right:.7rem;text-decoration:inherit;width:120px}.add-student-popup,.remove-student-popup,.update-student-popup{backdrop-filter:blur(8px)!important;-webkit-backdrop-filter:blur(8px)!important;background-color:#050810bf!important;transition:.3s ease;z-index:100005!important}.student-popup-hide{opacity:0!important;pointer-events:none!important;transition:.3s ease}.add-student-popup .add-student-container,.remove-student-popup .remove-student-container,.student-container .add-student-container,.student-container .remove-student-container,.student-container .update-student-container,.update-student-popup .update-student-container{background:#223149!important;background:var(--bg-card,#223149)!important;border:1px solid #394e72!important;border:1px solid var(--border-dark,#394e72)!important;border-radius:18px!important;box-shadow:0 25px 60px -15px rgba(0,0,0,calc(var(--shadow-k)*.7)),0 0 0 1px #ffffff0d!important;color:#f8fafc!important;color:var(--text-main,#f8fafc)!important;max-height:82vh!important;max-width:92vw!important;overflow-y:auto!important;padding:1.75rem!important;position:absolute;top:90px;transition:transform .4s cubic-bezier(.16,1,.3,1),opacity .3s ease,top .4s ease!important;width:460px!important}.add-student-popup .add-student-container::-webkit-scrollbar,.remove-student-popup .remove-student-container::-webkit-scrollbar,.student-container .add-student-container::-webkit-scrollbar,.student-container .remove-student-container::-webkit-scrollbar,.student-container .update-student-container::-webkit-scrollbar,.update-student-popup .update-student-container::-webkit-scrollbar{width:6px}.student-container .add-student-container::-webkit-scrollbar-track,.student-container .remove-student-container::-webkit-scrollbar-track,.student-container .update-student-container::-webkit-scrollbar-track{background:#0000}.student-container .add-student-container::-webkit-scrollbar-thumb,.student-container .remove-student-container::-webkit-scrollbar-thumb,.student-container .update-student-container::-webkit-scrollbar-thumb{background:var(--border-dark);border-radius:4px}.update-top{opacity:0!important;top:-1200px!important;transition:.5s ease}.add-popup-head,.update-popup-head{border-bottom:1px solid #ffffff14!important;margin-bottom:1.1rem!important;padding-bottom:.9rem!important}.remove-student-popup .remove-student-container,.student-container .remove-student-container{max-height:none!important;max-width:90vw!important;overflow-y:visible!important;padding:1.75rem!important;width:420px!important}.remove-popup-body{padding:1.2rem 0 1.5rem!important}.remove-popup-body p{color:var(--text-muted)!important;font-size:15.5px!important;line-height:1.5!important;margin:0!important}.remove-btn-cancel{background:var(--bg-card)!important;border:1px solid var(--border-dark)!important;border-radius:10px!important;color:var(--text-muted)!important;cursor:pointer!important;font-size:14px!important;font-weight:600!important;height:auto!important;padding:.7rem 1.5rem!important;transition:all .2s ease!important;width:auto!important}.remove-btn-cancel:hover{background:var(--border-dark)!important;color:var(--text-bright)!important}.remove-btn-danger{background:linear-gradient(135deg,#ef4444,#dc2626)!important;border:none!important;border-radius:10px!important;box-shadow:0 4px 14px #ef444459!important;color:#fff!important;cursor:pointer!important;font-size:14px!important;font-weight:600!important;height:auto!important;padding:.7rem 1.6rem!important;transition:all .2s ease!important;width:auto!important}.remove-btn-danger:hover{background:linear-gradient(135deg,#dc2626,#b91c1c)!important;box-shadow:0 6px 18px #ef444473!important;transform:translateY(-1px)}.add-popup-head p,.update-popup-head p{align-items:center;color:#fff!important;display:flex;font-size:20px!important;font-weight:700!important;gap:8px;margin:0!important}.add-popup-body,.update-popup-body{padding:.2rem 0!important}.add-popup-body label,.update-popup-body label{color:var(--text-subtle)!important;display:block!important;font-size:12.5px!important;font-weight:600!important;letter-spacing:.5px;margin-bottom:.4rem!important;text-transform:uppercase}.add-popup-body input,.update-popup-body input{background:#182337!important;background:var(--bg-main,#182337)!important;border:1px solid #394e72!important;border:1px solid var(--border-dark,#394e72)!important;border-radius:10px!important;box-sizing:border-box!important;color:#f8fafc!important;color:var(--text-main,#f8fafc)!important;font-size:14.5px!important;margin-bottom:.85rem!important;outline:none!important;padding:.78rem 1rem!important;transition:border-color .2s ease,box-shadow .2s ease!important;width:100%!important}.add-popup-body input:focus,.update-popup-body input:focus{border-color:var(--accent-primary)!important;box-shadow:0 0 0 3px #6366f140!important}.add-popup-body input::placeholder,.update-popup-body input::placeholder{color:#71839e!important;color:var(--text-dim,#71839e)!important}.show-password{gap:8px!important;margin-bottom:.85rem!important}.show-password input{accent-color:var(--accent-primary)!important;height:16px!important;width:16px!important}.show-password input,.show-password p{cursor:pointer!important;margin:0!important}.show-password p{color:#cbd5e1!important;color:var(--text-muted,#cbd5e1)!important;font-size:13.5px!important}.add-popup-select-class,.update-popup-select-class{background-color:#182337!important;background-color:var(--bg-main,#182337)!important;border:1px solid #394e72!important;border:1px solid var(--border-dark,#394e72)!important;border-radius:10px!important;box-shadow:none!important;display:flex;height:46px!important;margin:.5rem 0 1.2rem!important;overflow:hidden;position:relative;width:100%}.add-popup-select-class select,.update-popup-select-class select{appearance:none!important;-webkit-appearance:none!important;background-color:#182337!important;background-color:var(--bg-main,#182337)!important;border:0!important;color:#f8fafc!important;color:var(--text-main,#f8fafc)!important;cursor:pointer!important;font-size:14.5px!important;height:100%!important;outline:none!important;padding:0 45px 0 14px!important;width:100%!important}.add-popup-select-class select option,.update-popup-select-class select option{background-color:#223149!important;background-color:var(--bg-card,#223149)!important;color:#f8fafc!important;color:var(--text-main,#f8fafc)!important}.add-popup-select-class:after,.update-popup-select-class:after{align-items:center;background-color:var(--bg-card)!important;border-left:1px solid var(--border-dark)!important;bottom:0;color:var(--accent-text)!important;content:"▼"!important;display:flex;font-size:11px!important;justify-content:center;pointer-events:none;position:absolute;right:0;top:0;width:38px}.update-popup-footer{border-top:1px solid #ffffff14;display:flex;gap:10px;justify-content:flex-end;margin-top:1.25rem;padding-top:1rem}.popup-btn{background:#1e293b!important;border:1px solid var(--line-334155)!important;border-radius:10px!important;color:#94a3b8!important;cursor:pointer;font-size:14px!important;font-weight:600!important;height:auto!important;padding:.7rem 1.4rem!important;transition:all .2s ease;width:auto!important}.popup-btn:hover{background:#334155!important;color:#fff!important}.popup-btn2{background:var(--accent-primary);border:none!important;border-radius:10px!important;box-shadow:0 4px 12px #6366f159!important;color:#fff!important;cursor:pointer;font-size:14px!important;font-weight:600!important;height:auto!important;min-width:90px;padding:.7rem 1.6rem!important;transition:all .2s ease;width:auto!important}.popup-btn2:hover{box-shadow:0 6px 16px #6366f180!important;opacity:.92;transform:translateY(-1px)}@media only screen and (max-width:768px){.student-container{padding:0 1.2rem 12rem}.student-body{overflow-x:auto}.student-footer{bottom:120px}.add-student-container,.remove-student-container,.update-student-container{width:70%}}@media only screen and (max-width:600px){.student-container{padding:0 1rem 12rem}.add-student-container,.remove-student-container,.update-student-container{width:95%}.student-header div{height:47px}}:root[data-theme=light] .student-header input{background:#fff;border:1.5px solid #cbd5e1;color:#0f172a}:root[data-theme=light] .student-header input::placeholder{color:var(--text-subtle)}:root[data-theme=light] .student-header-body td,:root[data-theme=light] .student-header-body tr{color:#64748b}:root[data-theme=light] .student-row{background:#fff;border:1px solid #e2e8f0;box-shadow:0 2px 6px #0000000d}:root[data-theme=light] .student-row:hover{background:#f8fafc;border-color:#cbd5e1}:root[data-theme=light] .student-row td{color:#334155}:root[data-theme=light] .student-row td.student-name p{color:#0f172a}:root[data-theme=light] .add-student-popup .add-student-container,:root[data-theme=light] .remove-student-popup .remove-student-container,:root[data-theme=light] .student-container .add-student-container,:root[data-theme=light] .student-container .remove-student-container,:root[data-theme=light] .student-container .update-student-container,:root[data-theme=light] .update-student-popup .update-student-container{background:#fff!important;border:1px solid #e2e8f0!important;box-shadow:0 20px 45px rgba(0,0,0,calc(var(--shadow-k)*.12))!important;color:#0f172a!important}:root[data-theme=light] .add-popup-head,:root[data-theme=light] .update-popup-head{border-bottom:1px solid #e2e8f0!important}:root[data-theme=light] .add-popup-head p,:root[data-theme=light] .update-popup-head p{color:#0f172a!important}:root[data-theme=light] .add-popup-body label,:root[data-theme=light] .update-popup-body label{color:#475569!important}:root[data-theme=light] .add-popup-body input,:root[data-theme=light] .update-popup-body input{background:#f8fafc!important;border:1px solid #cbd5e1!important;color:#0f172a!important}:root[data-theme=light] .add-popup-body input::placeholder,:root[data-theme=light] .update-popup-body input::placeholder{color:var(--text-subtle)!important}:root[data-theme=light] .show-password p{color:#475569!important}:root[data-theme=light] .add-popup-select-class,:root[data-theme=light] .update-popup-select-class{background:#f8fafc!important;border:1px solid #cbd5e1!important}:root[data-theme=light] .add-popup-select-class select,:root[data-theme=light] .update-popup-select-class select{background-color:#f8fafc!important;color:#0f172a!important}:root[data-theme=light] .add-popup-select-class select option,:root[data-theme=light] .update-popup-select-class select option{background-color:#fff!important;color:#0f172a!important}:root[data-theme=light] .add-popup-select-class:after,:root[data-theme=light] .update-popup-select-class:after{background-color:#f1f5f9!important;border-left:1px solid #cbd5e1!important;color:var(--accent-text)!important}:root[data-theme=light] .popup-btn{background:#f1f5f9!important;border:1px solid #cbd5e1!important;color:#475569!important}:root[data-theme=light] .remove-popup-body p{color:#334155!important}:root[data-theme=light] .remove-btn-cancel{background:#f1f5f9!important;border:1px solid #cbd5e1!important;color:#475569!important}.class-container{margin:0 auto;max-width:1200px;padding:6.5rem 2.2rem 7rem;position:relative}.class-header{align-items:center;background:var(--accent-primary);border:1px solid rgba(var(--hairline),.15);border-radius:12px;box-shadow:0 4px 14px #6366f14d;color:#fff;cursor:pointer;display:inline-flex;font-size:15.5px;font-weight:600;gap:10px;margin-bottom:1.5rem;padding:.75rem 1.4rem;transition:all .2s ease}.class-header:hover{box-shadow:0 6px 20px #6366f173;transform:translateY(-2px)}.class-header p{margin:0}.class-header p:first-child{align-items:center;background-color:#ffffff40;border-radius:50%;color:#fff;display:flex;font-size:17px;font-weight:700;height:26px;justify-content:center;padding:0;width:26px}.class-item{background-color:#223149;background-color:var(--bg-card,#223149);border:1px solid #394e72;border:1px solid var(--border-dark,#394e72);border-radius:14px;box-shadow:0 4px 16px rgba(0,0,0,calc(var(--shadow-k)*.25));color:#f8fafc;color:var(--text-main,#f8fafc);margin-top:.75rem;padding:1.1rem 1.4rem;transition:all .2s ease}.class-item:hover{background-color:#2c3d5a;background-color:var(--surface-hover,#2c3d5a);border-color:#60a5fa;border-color:var(--accent-light,#60a5fa)}.class-item p{color:#f8fafc;font-size:16.5px;font-weight:600;margin:0}.class-icon span{align-items:center;background:rgba(var(--hairline),.05);border:1px solid rgba(var(--hairline),.08);border-radius:8px;display:inline-flex;height:34px;justify-content:center;transition:all .15s ease;width:34px}.class-icon span:hover{background:rgba(var(--hairline),.12);transform:scale(1.1)}.dropbtn{background-color:var(--accent-primary);border:none;border-radius:8px;color:#fff;cursor:pointer;font-size:13px;font-weight:600;padding:6px 12px;transition:background .15s ease}.dropbtn:hover{background-color:#2563eb}.dropdown{display:inline-block;position:relative}.dropdown-content{background-color:#223149;background-color:var(--bg-card,#223149);border:1px solid #394e72;border:1px solid var(--border-dark,#394e72);border-radius:10px;box-shadow:0 10px 25px rgba(0,0,0,calc(var(--shadow-k)*.5));cursor:pointer;display:none;min-width:155px;overflow:hidden;position:absolute;right:0;z-index:100}.dropdown-content p{color:#f8fafc;font-size:14px;margin:0;padding:10px 14px;transition:background .15s ease}.dropdown-content p:hover{background-color:rgba(var(--hairline),.08);color:var(--fg-blue-400)}.dropdown:hover .dropdown-content{display:block}.add-class-popup,.add-to-class-popup,.remove-class-popup,.update-class-popup{backdrop-filter:blur(8px)!important;-webkit-backdrop-filter:blur(8px)!important;background-color:#050810bf!important;bottom:0;left:0;position:fixed;right:0;top:0;transition:.3s ease;z-index:100005!important}.class-popup-hide{opacity:0!important;pointer-events:none!important;transition:.3s ease}.add-class-container,.add-to-class-container,.remove-class-container,.update-class-container{background:#223149!important;background:var(--bg-card,#223149)!important;border:1px solid #394e72!important;border:1px solid var(--border-dark,#394e72)!important;border-radius:18px!important;box-shadow:0 25px 60px -15px rgba(0,0,0,calc(var(--shadow-k)*.7)),0 0 0 1px #ffffff0d!important;color:#f8fafc!important;color:var(--text-main,#f8fafc)!important;max-height:82vh!important;max-width:92vw!important;overflow-y:auto!important;padding:1.75rem!important;position:absolute;top:90px;transition:transform .4s cubic-bezier(.16,1,.3,1),opacity .3s ease,top .4s ease!important;width:480px!important}.add-popup-head,.add-to-popup-head,.update-popup-head{border-bottom:1px solid #ffffff14!important;margin-bottom:1.1rem!important;padding-bottom:.9rem!important}.add-popup-head p,.add-to-popup-head p,.update-popup-head p{color:#f8fafc!important;color:var(--text-main,#f8fafc)!important;font-size:1.25rem!important;font-weight:700!important;margin:0!important}.add-popup-body label,.add-to-popup-body label{color:#cbd5e1;color:var(--text-muted,#cbd5e1);display:block;font-size:13.5px;font-weight:600;margin-bottom:6px}.add-popup-body input,.add-popup-select-class select{background:#182337;background:var(--bg-main,#182337);border:1px solid #394e72;border:1px solid var(--border-dark,#394e72);border-radius:10px;box-sizing:border-box;color:#f8fafc;color:var(--text-main,#f8fafc);font-size:14.5px;outline:none;padding:.75rem 1rem;transition:border-color .15s ease;width:100%}.add-popup-body input:focus,.add-popup-select-class select:focus{border-color:var(--accent-primary)}.student-list-container,.teacher-list-container{max-height:70vh!important}.class-top{opacity:0!important;top:-1200px!important;transition:.5s ease}.add-to-popup-body,.remove-popup-body{padding:.8rem 0}.remove-popup-body p{color:#cbd5e1;color:var(--text-muted,#cbd5e1);font-size:16px}.student-item{background-color:#2c3d5a;background-color:var(--surface-hover,#2c3d5a);border:1px solid #394e72;border:1px solid var(--border-dark,#394e72);border-radius:10px;color:#f8fafc;color:var(--text-main,#f8fafc);margin-bottom:.6rem;padding:.85rem 1rem}.student-item p{color:#f8fafc;font-size:15.5px;font-weight:500;margin:0}.student-item i{color:var(--error-text);cursor:pointer;font-size:18px;transition:transform .15s ease}.student-item i:hover{transform:scale(1.15)}.front-layer{background-color:#050505cc;bottom:0;left:0;position:absolute;right:0;top:0}:root[data-theme=light] .class-item{background-color:#fff;border:1px solid #e2e8f0;box-shadow:0 4px 15px #0000000f;color:#0f172a}:root[data-theme=light] .class-item p{color:#0f172a}:root[data-theme=light] .add-class-container,:root[data-theme=light] .add-to-class-container,:root[data-theme=light] .remove-class-container,:root[data-theme=light] .update-class-container{background:#fff!important;border:1px solid #e2e8f0!important;box-shadow:0 25px 60px -15px rgba(0,0,0,calc(var(--shadow-k)*.15))!important;color:#0f172a!important}:root[data-theme=light] .add-popup-head p,:root[data-theme=light] .add-to-popup-head p,:root[data-theme=light] .update-popup-head p{color:#0f172a!important}:root[data-theme=light] .add-popup-body input,:root[data-theme=light] .add-popup-select-class select{background:#f8fafc;border:1px solid #cbd5e1;color:#0f172a}:root[data-theme=light] .student-item{background-color:#f8fafc;border:1px solid #e2e8f0;color:#0f172a}:root[data-theme=light] .student-item p{color:#0f172a}.loader-percentage{background:var(--bg-ffffff);border:2px solid #fff;color:red;display:block;height:32px;overflow:hidden;position:relative;width:200px}.loader-percentage:before{animation:loading 10s linear infinite;background:red;width:0}.loader-percentage:after,.loader-percentage:before{content:"";height:100%;left:0;position:absolute;top:0}.loader-percentage:after{animation:percentage 10s linear infinite;color:#0ff;font-size:24px;line-height:32px;mix-blend-mode:difference;text-align:center;width:100%}@keyframes loading{0%{width:0}to{width:100%}}@keyframes percentage{0%{content:"0%"}5%{content:"5%"}10%{content:"10%"}20%{content:"20%"}30%{content:"30%"}40%{content:"40%"}50%{content:"50%"}60%{content:"60%"}70%{content:"70%"}80%{content:"80%"}90%{content:"90%"}95%{content:"95%"}96%{content:"96%"}97%{content:"97%"}98%{content:"98%"}99%{content:"99%"}to{content:"100%"}}@media only screen and (max-width:992px){.add-class-container,.add-to-class-container,.remove-class-container,.update-class-container{width:50%}}@media only screen and (max-width:768px){.class-container{padding:0 1.2rem 6.5rem}.add-class-container,.add-to-class-container,.remove-class-container,.update-class-container{width:70%}}@media only screen and (max-width:600px){.class-container{padding:0 1rem 6.5rem}.add-class-container,.add-to-class-container,.remove-class-container,.update-class-container{width:95%}}.subject-container{padding:5.5rem 2.2rem 6.5rem}.subject-header{background-color:var(--accent-primary);border-radius:20px;color:var(--fixed-50);cursor:pointer;font-size:18px;font-weight:500;margin-bottom:1.5rem;padding:.65rem .8rem}.subject-header p{margin-right:.5rem}.subject-header p:first-child{background-color:var(--bg-f8fafc);border-radius:50%;color:var(--fg-5d17eb);padding:.75rem 1rem}.subject-item{background-color:var(--bg-f8fafc);border-radius:10px;box-shadow:0 4px 4px 0 #0000001a,0 6px 15px 0 rgba(0,0,0,calc(var(--shadow-k)*.19));margin-top:.5rem;padding:1rem .8rem}.subject-item p{font-size:17px}.subject-icon i{background-color:var(--bg-f8fafc);border-radius:10px;box-shadow:0 4px 4px 0 #0000001a,0 6px 15px 0 #0000001a;cursor:pointer;font-size:20px;margin-right:.4rem;padding:.5rem}.subject-icon i:first-child{color:var(--fg-5d17eb)}.subject-icon:last-child{color:red}.add-subject-popup,.remove-subject-popup,.update-subject-popup{background-color:#05050580;bottom:0;left:0;position:fixed;right:0;top:0;transition:.5s}.class-subject-hide{background-color:initial!important;transition:.5s}.add-subject-container,.remove-subject-container,.update-subject-container{background-color:var(--bg-f8fafc);border-radius:10px;max-height:80vh;overflow-y:scroll;padding:1rem;position:absolute;top:120px;transition:.7s;width:40%}.subject-top{top:-1200px;transition:.7s}.remove-popup-body{padding:.8rem 0}.remove-popup-body h3,.remove-popup-body p{text-align:center}.remove-popup-body p{font-size:19px;margin-bottom:.3rem}@media only screen and (max-width:992px){.add-subject-container,.remove-subject-container,.update-subject-container{width:50%}}@media only screen and (max-width:768px){.subject-container{padding:0 1.2rem 6.5rem}.add-subject-container,.remove-subject-container,.update-subject-container{width:70%}}@media only screen and (max-width:600px){.subject-container{padding:0 1rem 6.5rem}.add-subject-container,.remove-subject-container,.update-subject-container{width:95%}}.teacher-container{padding:6.5rem 2.2rem 7rem;position:relative}.teacher-header{margin-top:.5rem}.teacher-header input{background:var(--bg-card);border:1px solid var(--border);border-radius:12px;color:var(--text-main);font-size:15px;outline:none;padding:.85rem 1.25rem;transition:all .2s ease;width:97%}.teacher-header input:focus{background:var(--bg-card);border-color:var(--accent-primary);box-shadow:0 0 0 3px #2e6be633}.teacher-header div{background-color:var(--accent-primary);border-radius:50%;color:var(--fixed-50);cursor:pointer;font-size:23px;height:50px;margin-left:.8rem;width:50px}.teacher-body{margin-top:2rem}.teacher-name img{margin-right:.3rem;width:22px}.teacher-body table{border-collapse:collapse;width:100%}.teacher-header-body tr{color:var(--text-subtle);font-size:17px}.teacher-header-body:after{content:"@";display:block;line-height:20px;text-indent:-99999px}.teacher-header-body td{overflow:hidden;padding:0 1rem;text-overflow:ellipsis;white-space:nowrap}.teacher-row{background:var(--bg-card);border-radius:10px;box-shadow:0 4px 4px 0 #0000001a,0 6px 15px 0 rgba(0,0,0,calc(var(--shadow-k)*.19));font-size:18px}.teacher-row td{overflow:hidden;padding:1rem;text-overflow:ellipsis;white-space:nowrap}.teacher-action i{cursor:pointer;font-size:23px;margin-right:.7rem}.teacher-action i:first-child{color:var(--fg-5d17eb)}.teacher-action i:last-child{color:#ff3131}.teacher-footer{bottom:40px;position:absolute}.teacher-footer button{background:none;background:var(--accent-primary);background-clip:padding-box,border-box;background-origin:padding-box,border-box;border:2px solid #0000;border-radius:20px;cursor:pointer;font-family:system-ui;font-size:1.1rem;height:50px;margin-right:.7rem;text-decoration:inherit;width:120px}.add-student-popup,.remove-student-popup,.update-student-popup{background-color:#05050580;bottom:0;left:0;position:fixed;right:0;top:0;transition:.5s}.student-popup-hide{background-color:initial!important;transition:.5s}.teacher-container .add-student-container,.teacher-container .remove-student-container,.teacher-container .update-student-container{background-color:#223149;background-color:var(--bg-card,#223149);border:1px solid #394e72;border:1px solid var(--border-dark,#394e72);border-radius:16px;color:#f8fafc;color:var(--text-main,#f8fafc);max-height:80vh;overflow-y:scroll;padding:1.5rem;position:absolute;top:120px;transition:.7s;width:40%}.teacher-container .update-top{top:-1200px;transition:.7s}.teacher-container .add-popup-head,.teacher-container .update-popup-head{border-bottom:1px solid var(--border-dark,var(--line-334155));padding-bottom:.7rem}.teacher-container .add-popup-head p,.teacher-container .update-popup-head p{color:#f8fafc;color:var(--text-main,#f8fafc);font-size:20px;font-weight:700}.teacher-container .add-popup-body,.teacher-container .update-popup-body{padding:.8rem 0}.teacher-container .add-popup-body label,.teacher-container .update-popup-body label{color:#94a3b8;color:var(--text-muted,#94a3b8);display:block;font-size:13px;font-weight:600;margin-bottom:.3rem}.teacher-container .add-popup-body input,.teacher-container .update-popup-body input{background:#182337;background:var(--bg-main,#182337);border:1px solid #394e72;border:1px solid var(--border-dark,#394e72);border-radius:10px;color:#f8fafc;color:var(--text-main,#f8fafc);margin-bottom:.6rem;outline:none;padding:.75rem .85rem;width:100%}.teacher-container .show-password input{width:18px}.teacher-container .show-password p{color:#cbd5e1;color:var(--text-muted,#cbd5e1);font-size:14px;margin-bottom:.3rem}.teacher-container .add-popup-select-class select,.teacher-container .update-popup-select-class select{-webkit-appearance:none;appearance:none;background-color:#182337;background-color:var(--bg-main,#182337);border:0;box-shadow:none;color:#f8fafc;color:var(--text-main,#f8fafc);cursor:pointer;flex:1 1;font-size:15px;outline:none;padding:0 10px}.teacher-container .add-popup-select-class,.teacher-container .update-popup-select-class{background-color:#182337;background-color:var(--bg-main,#182337);border:1px solid #394e72;border:1px solid var(--border-dark,#394e72);border-radius:.4em;display:flex;height:2.5em;margin:.5rem 0;overflow:hidden;padding-left:.5rem;position:relative;width:100%}.teacher-container .add-popup-select-class:after,.teacher-container .update-popup-select-class:after{background-color:var(--accent-primary);color:#fff;content:"\25BC";padding:.7em;pointer-events:none;position:absolute;right:0;top:0;transition:all .25s ease}.popup-btn{background-color:#ff3131}.popup-btn2{background-color:var(--accent-primary);margin-left:.5rem;width:100px}.class-info{cursor:pointer;font-size:20px}@media only screen and (max-width:992px){.add-student-container,.remove-student-container,.update-student-container{width:50%}}@media only screen and (max-width:768px){.teacher-container{padding:0 1.2rem 12rem}.teacher-body{overflow-x:auto}.teacher-footer{bottom:120px}.add-student-container,.remove-student-container,.update-student-container{width:70%}}@media only screen and (max-width:600px){.teacher-container{padding:0 1rem 12rem}.add-student-container,.remove-student-container,.update-student-container{width:95%}.teacher-header div{height:47px}}.attempt-history-modal{align-items:center;background:#0009;bottom:0;display:flex;justify-content:center;left:0;padding:20px;position:fixed;right:0;top:0;z-index:10000}.attempt-history-content{background:var(--bg-ffffff);border-radius:16px;box-shadow:0 10px 40px rgba(0,0,0,calc(var(--shadow-k)*.2));max-height:90vh;max-width:800px;overflow-y:auto;position:relative;width:100%}.attempt-history-header{align-items:center;background:var(--bg-ffffff);border-bottom:2px solid var(--line-e5e7eb);display:flex;justify-content:space-between;padding:24px;position:-webkit-sticky;position:sticky;top:0;z-index:1}.attempt-history-header h2{color:var(--fg-1f2937);font-size:24px;font-weight:600;margin:0}.close-btn{align-items:center;background:none;border:none;border-radius:8px;color:var(--fg-6b7280);cursor:pointer;display:flex;font-size:32px;height:40px;justify-content:center;transition:all .2s;width:40px}.close-btn:hover{background:var(--bg-f3f4f6);color:var(--fg-1f2937)}.statistics-section{grid-gap:16px;background:var(--bg-f9fafb);border-bottom:2px solid var(--line-e5e7eb);display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));padding:24px}.stat-card{border:1px solid var(--line-e5e7eb);box-shadow:0 2px 8px #00000014;padding:16px;text-align:center}.stat-label{color:var(--fg-6b7280);font-size:12px;font-weight:500;letter-spacing:.5px;margin-bottom:8px}.stat-value{color:var(--fg-1f2937);font-size:24px}.stat-value.highlight-green{color:var(--success-text)}.stat-value.highlight-blue{color:var(--fg-0284c7)}.attempts-list{padding:24px}.attempts-list h3{color:var(--fg-1f2937);font-size:18px;font-weight:600;margin:0 0 16px}.no-attempts{color:var(--fg-6b7280);padding:40px;text-align:center}.attempts-table{overflow-x:auto}.attempts-table table{border-collapse:collapse;width:100%}.attempts-table thead{background:var(--bg-f9fafb)}.attempts-table th{border-bottom:2px solid var(--line-e5e7eb);color:var(--fg-6b7280);font-size:12px;font-weight:600;letter-spacing:.5px;padding:12px 16px;text-align:left;text-transform:uppercase}.attempts-table tbody tr{border-bottom:1px solid var(--line-e5e7eb);transition:background .2s}.attempts-table tbody tr:hover{background:var(--bg-f9fafb)}.attempts-table tbody tr.current-attempt{background:var(--bg-dbeafe)}.attempts-table tbody tr.current-attempt:hover{background:var(--bg-bfdbfe)}.attempts-table td{color:var(--fg-374151);padding:16px}.attempt-number{color:var(--fg-1f2937);font-size:16px;font-weight:600}.current-badge{background:var(--accent-primary);border-radius:12px;color:#fff;font-size:11px;font-weight:600;letter-spacing:.5px;margin-left:8px;padding:2px 8px;text-transform:uppercase}.score{font-size:16px;font-weight:600}.score.completed-score{color:var(--success-text)}.score.in-progress-score{color:#9ca3af}.date-cell{color:var(--fg-6b7280);font-size:14px}.attempt-history-footer{background:var(--bg-f9fafb);border-top:2px solid var(--line-e5e7eb);display:flex;justify-content:center;padding:24px}.attempt-history-footer .button{background:var(--accent-primary);border:none;border-radius:8px;color:#fff;cursor:pointer;font-size:16px;font-weight:600;padding:12px 32px;transition:all .2s}.attempt-history-footer .button:hover{background:#0369a1;box-shadow:0 4px 12px #0284c74d;transform:translateY(-1px)}.error-message,.loading{color:var(--fg-6b7280);padding:40px;text-align:center}.error-message{color:var(--fg-dc2626)}@media (max-width:640px){.attempt-history-content{border-radius:0;margin:0;max-height:100vh}.statistics-section{grid-template-columns:repeat(2,1fr)}.stat-value{font-size:20px}.attempts-table{font-size:14px}.attempts-table td,.attempts-table th{padding:8px 12px}}.lce-banners{display:flex;flex-direction:column;gap:10px;margin:0 0 18px}.lce-banner{align-items:center;background:linear-gradient(90deg,#e0282824,#e028280a);border:1px solid #e0282873;border-radius:14px;display:flex;flex-wrap:wrap;gap:14px;padding:12px 16px}.lce-live-tag{align-items:center;background:#e02828;border-radius:6px;color:#fff;display:inline-flex;font-size:12px;font-weight:800;gap:6px;letter-spacing:.06em;padding:4px 10px}.lce-dot{animation:lce-pulse 1.4s ease-in-out infinite;background:var(--bg-ffffff);border-radius:50%;height:8px;width:8px}@keyframes lce-pulse{0%,to{opacity:1}50%{opacity:.3}}.lce-text{display:flex;flex:1 1;flex-direction:column;gap:2px;min-width:180px}.lce-text strong{color:#fff;color:var(--text-main,#fff);font-size:15px}.lce-text span{color:#94a3b8;color:var(--text-subtle,#94a3b8);font-size:13px}.lce-join,.lce-start{align-items:center;background:#2563eb;background:var(--accent-primary,#2563eb);border:0;border-radius:10px;color:#fff;cursor:pointer;display:inline-flex;font-size:14px;font-weight:700;gap:8px;padding:10px 18px;transition:filter .15s,transform .15s}:root[data-brand=ais]:not([data-theme=light]) .lce-join,:root[data-brand=ais]:not([data-theme=light]) .lce-start{color:#1b3a6b}.lce-join:hover,.lce-start:hover{filter:brightness(1.08);transform:translateY(-1px)}.lce-start-live{background:#e02828;color:#fff!important}@media (max-width:600px){.lce-join{justify-content:center;width:100%}}.lce-launch-backdrop{align-items:center;background:#02061799;display:flex;inset:0;justify-content:center;padding:16px;position:fixed;z-index:100000}.lce-launch{align-items:center;background:#223149;background:var(--bg-card,#223149);border:1px solid #394e72;border:1px solid var(--border,#394e72);border-radius:16px;box-shadow:0 24px 60px rgba(0,0,0,calc(var(--shadow-k)*.35));color:#f8fafc;color:var(--text-main,#f8fafc);display:flex;flex-direction:column;gap:12px;padding:28px 24px 22px;position:relative;text-align:center;width:min(420px,100%)}.lce-launch h3{font-size:19px;margin:0}.lce-launch p{color:#94a3b8;color:var(--text-subtle,#94a3b8);font-size:14px;margin:0}.lce-launch-icon{align-items:center;background:#2563eb;background:var(--accent-primary,#2563eb);border-radius:14px;color:#fff;display:inline-flex;height:54px;justify-content:center;width:54px}:root[data-brand=ais]:not([data-theme=light]) .lce-launch-icon,:root[data-brand=ais]:not([data-theme=light]) .lce-launch-primary{color:#1b3a6b}.lce-launch-close{background:#0000;border:0;border-radius:8px;color:inherit;cursor:pointer;height:32px;inset-inline-end:10px;position:absolute;top:10px;width:32px}.lce-launch-close:hover{background:rgba(var(--hairline),.08);background:var(--surface-hover,rgba(var(--hairline),.08))}.lce-launch-primary{background:#2563eb;background:var(--accent-primary,#2563eb);border:0;border-radius:10px;color:#fff;font-size:14px;font-weight:700;gap:8px;margin-top:4px;padding:10px 18px}.lce-launch-link,.lce-launch-primary{align-items:center;cursor:pointer;display:inline-flex}.lce-launch-link{background:#0000;border:0;color:#60a5fa;color:var(--accent-primary,#60a5fa);font-size:13px;font-weight:600;gap:6px;text-decoration:none}.lce-launch-link:hover{text-decoration:underline}.lce-launch-hint{color:#94a3b8;color:var(--text-subtle,#94a3b8);font-size:12px;line-height:1.5;margin:-4px 0 0}.lce-launch-hint a{color:#60a5fa;color:var(--accent-primary,#60a5fa)}.lce-launch-check{align-items:center;color:#94a3b8;color:var(--text-subtle,#94a3b8);display:flex;font-size:12px;gap:8px}.student-dashboard-container{background:var(--text-main-light);background:var(--bg,var(--text-main-light));min-height:calc(100vh - 68px);padding:6rem 2rem 5rem}.dashboard-main-menu{margin:0 auto;max-width:900px}.welcome-header{margin-bottom:2rem}.welcome-header .class-name{color:var(--bg-card);color:var(--text,var(--bg-card));font-size:1.5rem;font-weight:700;margin:0}.dashboard-cards{grid-gap:1.25rem;display:grid;gap:1.25rem;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}.dashboard-card{background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));border:1px solid var(--border-light,var(--text-main-lighter));border-radius:14px;border-radius:var(--radius-lg,14px);box-shadow:var(--shadow);cursor:pointer;display:flex;flex-direction:column;overflow:hidden;padding:1.75rem;position:relative;transition:box-shadow .2s ease,transform .2s ease}.dashboard-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}.dashboard-card:before{content:"";height:3px;left:0;position:absolute;right:0;top:0}.homework-card:before{background:var(--accent-primary);background:var(--sat-blue,var(--accent-primary))}.practice-card:before{background:#16a34a;background:var(--success,#16a34a)}.card-icon-wrapper{align-items:center;border-radius:10px;border-radius:var(--radius,10px);display:flex;height:56px;justify-content:center;margin-bottom:1.25rem;width:56px}.homework-card .card-icon-wrapper{background:var(--bg-eff6ff);background:var(--sat-light-blue,var(--bg-eff6ff));color:var(--accent-primary);color:var(--sat-blue,var(--accent-primary))}.practice-card .card-icon-wrapper{background:var(--bg-ecfdf5);color:var(--success-text)}.card-stats{border-bottom:1px solid var(--border-light,var(--text-main-lighter));border-top:1px solid var(--border-light,var(--text-main-lighter));display:flex;flex-wrap:wrap;gap:1.5rem;margin-bottom:1.25rem;padding:.85rem 0}.stat-item{display:flex;flex-direction:column;gap:.2rem}.stat-number{color:var(--bg-card);color:var(--text,var(--bg-card));font-size:1.5rem;font-weight:700;line-height:1}.stat-label{color:var(--text-dim);color:var(--text-muted,var(--text-dim));font-size:.75rem;font-weight:600;letter-spacing:.05em;text-transform:uppercase}.no-data{color:var(--text-subtle);color:var(--text-light,var(--text-subtle));font-size:.875rem;font-style:italic}.card-button{align-items:center;border:none;border-radius:10px;border-radius:var(--radius,10px);color:var(--fixed-50);cursor:pointer;display:flex;font-family:Inter,sans-serif;font-family:var(--font-body,"Inter",sans-serif);font-size:.9rem;font-weight:600;gap:.4rem;justify-content:center;letter-spacing:.02em;margin-top:auto;padding:.7rem 1.5rem;transition:opacity .15s ease}.card-button:hover{opacity:.9}.homework-card .card-button{background:#1b3a6b;background:var(--sat-navy,#1b3a6b)}.practice-card .card-button{background:#16a34a;background:var(--success,#16a34a)}.homework-text,.practice-text{font-size:.95rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase}@keyframes subtlePulse{0%,to{box-shadow:var(--shadow)}50%{box-shadow:0 0 0 4px #2563eb26,var(--shadow-lg)}}.pulse-animation{animation:subtlePulse 2.5s ease-in-out infinite}.practice-options-section{margin:0 auto;max-width:780px}.practice-options-grid{grid-gap:1.25rem;display:grid;gap:1.25rem;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));margin-top:1.5rem}.practice-option{align-items:center;background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));border:1px solid var(--border-light,var(--text-main-lighter));border-radius:14px;border-radius:var(--radius-lg,14px);box-shadow:var(--shadow);color:inherit;cursor:pointer;display:flex;flex-direction:column;overflow:hidden;padding:1.75rem;position:relative;text-align:center;text-decoration:none;transition:box-shadow .2s ease,transform .2s ease}.practice-option:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}.practice-option:before{content:"";height:3px;left:0;position:absolute;right:0;top:0}.practice-option.mental-math:before{background:var(--accent-primary);background:var(--sat-blue,var(--accent-primary))}.practice-option.masterminds:before{background:#16a34a;background:var(--success,#16a34a)}.practice-option-icon{font-size:2.5rem;margin-bottom:.75rem}.practice-option h3{color:var(--bg-card);color:var(--text,var(--bg-card));font-size:1.1rem;font-weight:700;margin:0 0 .5rem}.practice-option p{color:var(--text-dim);color:var(--text-muted,var(--text-dim));font-size:.875rem;line-height:1.5;margin-bottom:1.25rem}.practice-option-btn{align-items:center;border:none;border-radius:10px;border-radius:var(--radius,10px);color:var(--fixed-50);cursor:pointer;display:flex;font-family:Inter,sans-serif;font-family:var(--font-body,"Inter",sans-serif);font-size:.875rem;font-weight:600;gap:.4rem;justify-content:center;padding:.65rem 1.5rem;transition:opacity .15s ease;width:100%}.practice-option-btn:hover{opacity:.9}.mental-math .practice-option-btn{background:#1b3a6b;background:var(--sat-navy,#1b3a6b)}.masterminds .practice-option-btn{background:#16a34a;background:var(--success,#16a34a)}.section-header{align-items:center;display:flex;gap:1rem;margin-bottom:1.5rem}.section-header h2{font-size:1.3rem;font-weight:700;margin:0}.back-button,.section-header h2{color:var(--bg-card);color:var(--text,var(--bg-card))}.back-button{align-items:center;background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));border:1px solid var(--border,var(--text-muted));border-radius:10px;border-radius:var(--radius,10px);cursor:pointer;display:flex;font-family:Inter,sans-serif;font-family:var(--font-body,"Inter",sans-serif);font-size:.875rem;font-weight:600;gap:.4rem;padding:.5rem 1rem;transition:all .15s ease}.back-button:hover{background:var(--bg-eff6ff);background:var(--sat-light-blue,var(--bg-eff6ff));border-color:var(--sat-blue,var(--accent-primary));color:var(--accent-primary);color:var(--sat-blue,var(--accent-primary))}.homework-section{margin:0 auto;max-width:700px}.student-dashboard-body{background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));border:1px solid var(--border-light,var(--text-main-lighter));border-radius:14px;border-radius:var(--radius-lg,14px);box-shadow:var(--shadow);padding:1rem 1.25rem}.class-info{border-bottom:1px solid var(--border-light,var(--text-main-lighter));color:var(--text-dim);color:var(--text-muted,var(--text-dim));font-size:.75rem;font-weight:700;letter-spacing:.06em;margin-bottom:.75rem;padding-bottom:.6rem;text-transform:uppercase}.teacher-item{align-items:center;background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));border:1px solid var(--border-light,var(--text-main-lighter));border-radius:10px;border-radius:var(--radius,10px);box-shadow:none;color:var(--bg-card);color:var(--text,var(--bg-card));cursor:pointer;display:flex;justify-content:space-between;margin-top:.6rem;padding:1rem 1.25rem;transition:all .15s ease}.teacher-item:hover{background:var(--bg-eff6ff);background:var(--sat-light-blue,var(--bg-eff6ff));border-color:var(--sat-blue,var(--accent-primary));box-shadow:none;transform:none}.teacher-info{display:flex;flex-direction:column;gap:.2rem}.teacher-name{color:var(--bg-card);color:var(--text,var(--bg-card));font-size:.95rem;font-weight:600;margin:0}.subject-name{color:var(--text-dim);color:var(--text-muted,var(--text-dim));font-size:.8rem;margin:0}.assignment-popup{-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);background:#0f172a8c;inset:0;position:fixed;transition:background-color .3s ease;z-index:5000}.class-popup-hide{-webkit-backdrop-filter:none!important;backdrop-filter:none!important;background:#0000!important}.assignment-popup-container{background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));border-radius:20px;border-radius:var(--radius-xl,20px);box-shadow:0 20px 40px rgba(0,0,0,calc(var(--shadow-k)*.12));left:50%;max-height:80vh;overflow-y:auto;padding:1.5rem;position:absolute;top:60px;transform:translateX(-50%);transition:top .4s cubic-bezier(.34,1.2,.64,1);width:min(620px,92vw)}.popup-top{top:-1200px!important}.update-popup-head{align-items:center;border-bottom:1px solid var(--border-light,var(--text-main-lighter));display:flex;justify-content:space-between;margin-bottom:1rem;padding-bottom:.85rem}.update-popup-head p{color:var(--bg-card);color:var(--text,var(--bg-card));font-size:1rem;font-weight:700;margin:0}.popup-close-btn{border:1px solid var(--border,var(--text-muted));color:var(--text-dim);color:var(--text-muted,var(--text-dim));flex-shrink:0;font-size:.9rem;height:32px;transition:all .15s ease;width:32px}.popup-close-btn:hover{background:var(--bg-fef2f2);background:var(--error-bg,var(--bg-fef2f2));border-color:#dc2626;border-color:var(--error,#dc2626);color:#dc2626;color:var(--error,#dc2626)}.assignment-popup-body{background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));border:1px solid var(--border-light,var(--text-main-lighter));border-radius:14px;border-radius:var(--radius-lg,14px);margin-bottom:1rem;padding:1.25rem;position:relative}.assignment-popup-body:before{background:var(--accent-primary);background:var(--sat-blue,var(--accent-primary));border-radius:14px 14px 0 0;border-radius:var(--radius-lg,14px) var(--radius-lg,14px) 0 0;content:"";height:3px;left:0;position:absolute;right:0;top:0}.completed-assignment{border-color:var(--line-bbf7d0);opacity:.85}.completed-assignment:before{background:#16a34a;background:var(--success,#16a34a)}.assignment-item h2{color:var(--bg-card);color:var(--text,var(--bg-card));font-size:1.1rem;font-weight:700;margin:0 0 .5rem}.assignment-body-container{flex-wrap:wrap;gap:1rem;margin-top:.5rem}.assignment-body{align-items:center;display:flex;gap:.4rem}.assignment-body i{color:var(--accent-text);color:var(--sat-blue-text,var(--accent-text));font-size:.9rem}.assignment-body p{color:var(--text-dim);color:var(--text-muted,var(--text-dim));font-size:.875rem;font-weight:500}.assignment-text{margin-top:.75rem}.assignment-text p{color:var(--text-dim);color:var(--text-muted,var(--text-dim));font-size:.875rem;line-height:1.5}.assignment-poster{align-items:center;display:flex;flex-shrink:0;justify-content:flex-end}.assignment-poster img{height:auto;object-fit:contain;width:90px}.assignment-footer{align-items:center;border-top:1px solid var(--border-light,var(--text-main-lighter));display:flex;flex-wrap:wrap;gap:.75rem;justify-content:space-between;margin-top:1rem;padding-top:.75rem}.text-footer p{color:var(--text-dim);color:var(--text-muted,var(--text-dim));font-size:.78rem;margin-bottom:.15rem}.assignment-footer>div:last-child{align-items:center;display:flex;flex-wrap:wrap;gap:.6rem}.assignment-footer button{animation:none;background:#1b3a6b;background:var(--sat-navy,#1b3a6b);border:none;border-radius:10px;border-radius:var(--radius,10px);box-shadow:none;color:var(--fixed-50);cursor:pointer;font-family:Inter,sans-serif;font-family:var(--font-body,"Inter",sans-serif);font-size:.875rem;font-weight:600;letter-spacing:.01em;padding:.55rem 1.25rem;text-transform:none;transition:background-color .15s ease}.assignment-footer button:hover{background:var(--accent-primary);background:var(--sat-blue,var(--accent-primary))}.draft-assignments-section{background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));border-left:3px solid #d97706;border:1px solid var(--line-fde68a);border-left:3px solid var(--warning,#d97706);border-radius:14px;border-radius:var(--radius-lg,14px);box-shadow:var(--shadow-sm);margin-bottom:1.5rem;padding:1.25rem}.draft-section-title{align-items:center;color:var(--bg-card);color:var(--text,var(--bg-card));display:flex;font-size:.9rem;font-weight:700;gap:.4rem;letter-spacing:.05em;margin-bottom:1rem;text-transform:uppercase}.draft-assignments-list{display:flex;flex-direction:column;gap:.75rem}.draft-assignment-card{align-items:center;background:var(--text-main);background:var(--surface-muted,var(--text-main));border:1px solid var(--border-light,var(--text-main-lighter));border-radius:10px;border-radius:var(--radius,10px);display:flex;justify-content:space-between;padding:.85rem 1rem;transition:box-shadow .15s ease}.draft-assignment-card:hover{box-shadow:var(--shadow-sm)}.draft-info{flex:1 1;padding-right:1rem}.draft-assignment-id{color:var(--bg-card);color:var(--text,var(--bg-card));font-size:.875rem;font-weight:600;margin:0 0 .3rem}.draft-current-q,.draft-progress,.draft-time,.draft-timestamp{align-items:center;color:var(--text-dim);color:var(--text-muted,var(--text-dim));display:flex;font-size:.78rem;gap:.3rem;margin:.2rem 0}.draft-actions{display:flex;flex-shrink:0;gap:.5rem}.btn-discard,.btn-resume{border:none;border-radius:6px;border-radius:var(--radius-sm,6px);cursor:pointer;font-family:Inter,sans-serif;font-family:var(--font-body,"Inter",sans-serif);font-size:.8rem;font-weight:600;padding:.45rem .85rem;transition:opacity .15s ease}.btn-resume{background:#16a34a;background:var(--success,#16a34a);color:var(--fixed-50)}.btn-discard{background:#dc2626;background:var(--error,#dc2626);color:var(--fixed-50)}.btn-discard:hover,.btn-resume:hover{opacity:.85}@media (max-width:992px){.assignment-popup-container{width:80vw}.practice-options-grid{grid-template-columns:1fr}}@media (max-width:768px){.student-dashboard-container{padding:5.5rem 1rem 1.25rem}.assignment-popup-container{width:88vw}.dashboard-card{padding:1.5rem 1.25rem}.assignment-poster{display:none}.section-header{flex-wrap:wrap}}@media (max-width:600px){.student-dashboard-container{padding:5.5rem 1rem 1rem}.assignment-popup-container{width:95vw}.section-header{align-items:flex-start;flex-direction:column}.back-button{justify-content:center;width:100%}.draft-assignment-card{align-items:flex-start;flex-direction:column}.draft-info{padding-bottom:.75rem;padding-right:0}.draft-actions{width:100%}.btn-discard,.btn-resume{flex:1 1;justify-content:center}}@media (max-width:462px){.dashboard-cards{grid-template-columns:1fr}.stat-number{font-size:1.3rem}}.assignment-btn{align-items:center;border:none;border-radius:50px;box-shadow:0 10px 20px rgba(0,0,0,calc(var(--shadow-k)*.15));color:var(--fixed-50);cursor:pointer;display:flex;font-size:1.1rem;font-weight:700;gap:8px;letter-spacing:1px;padding:1rem 2.2rem;text-transform:uppercase;transition:all .3s cubic-bezier(.4,0,.2,1)}.assignment-btn.completed{background:linear-gradient(135deg,#10b981,#059669);border:3px solid var(--line-a7f3d0);color:var(--fixed-50)}.assignment-btn.completed:hover{background:linear-gradient(135deg,#047857,#10b981);box-shadow:0 15px 30px #10b98159;transform:translateY(-2px)}.assignment-btn.resume,.assignment-btn.resume-yellow{background:linear-gradient(135deg,#eab308,#ca8a04);border:3px solid var(--line-fef08a);color:var(--text-main)}.assignment-btn.resume-yellow:hover,.assignment-btn.resume:hover{background:linear-gradient(135deg,#a16207,#eab308);box-shadow:0 15px 30px #eab30859;transform:translateY(-2px)}.assignment-btn.start{background:linear-gradient(135deg,var(--accent-primary) 0,var(--accent-hover) 100%);border:3px solid var(--line-bfdbfe);color:var(--fixed-50)}.assignment-btn.start:hover{background:linear-gradient(135deg,var(--accent-active) 0,var(--accent-primary) 100%);box-shadow:0 15px 30px #2563eb59;transform:translateY(-2px)}.fullpage-countdown-overlay{align-items:center;animation:fadeIn .3s ease-out forwards;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#0f172aeb;display:flex;height:100vh;justify-content:center;left:0;position:fixed;top:0;width:100vw;z-index:9999999}.fullpage-countdown-content{align-items:center;display:flex;flex-direction:column;gap:2rem}.fullpage-countdown-ring{align-items:center;animation:pulseRing .9s ease-in-out infinite;background:linear-gradient(135deg,var(--accent-hover) 0,#8b5cf6 100%);border-radius:50%;box-shadow:0 0 50px #8b5cf680;display:flex;height:200px;justify-content:center;width:200px}.fullpage-countdown-number{animation:scaleDigit .9s ease-in-out infinite;color:var(--text-main);font-size:6rem;font-weight:800;text-shadow:0 10px 20px #0000004d}.fullpage-countdown-text{color:var(--text-main);font-size:2rem;font-weight:700;letter-spacing:2px;text-shadow:0 5px 15px #0000004d;text-transform:uppercase}@keyframes pulseRing{0%,to{box-shadow:0 0 50px #8b5cf680;transform:scale(1)}50%{box-shadow:0 0 80px #8b5cf6cc;transform:scale(1.08)}}@keyframes scaleDigit{0%,to{transform:scale(1)}50%{transform:scale(1.15)}}.student-course-container{background-color:var(--bg-main);box-sizing:border-box;color:var(--text-main);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;margin:0 auto;max-width:1400px;min-height:100vh;padding:95px 24px 70px}.student-header-banner-premium{align-items:center;background:radial-gradient(circle at 80% 40%,#2563eb38 0,rgba(var(--glass-900),.95) 75%),var(--bg-card);border:1px solid rgba(var(--hairline),.12);border-radius:20px;box-shadow:0 16px 36px rgba(0,0,0,calc(var(--shadow-k)*.5)),0 0 25px #2563eb1f;box-sizing:border-box;color:var(--text-main);display:flex;flex-wrap:wrap;gap:20px;justify-content:space-between;margin-bottom:24px;padding:28px 32px}.student-header-banner-premium h2{align-items:center;color:var(--text-main);display:flex;font-size:26px;font-weight:850;gap:10px;letter-spacing:-.02em;margin:0 0 6px}.student-header-banner-premium p{color:var(--text-subtle);font-size:14px;line-height:1.5;margin:0}.back-btn-student-view{align-items:center;background:rgba(var(--hairline),.08);border:1px solid rgba(var(--hairline),.15);border-radius:30px;color:var(--text-muted);cursor:pointer;display:inline-flex;font-size:12px;font-weight:700;gap:6px;margin-bottom:12px;padding:6px 14px;transition:all .2s ease;width:-webkit-fit-content;width:-moz-fit-content;width:fit-content}.back-btn-student-view:hover{background:rgba(var(--hairline),.18);color:var(--text-main)}.progress-container-pill{display:flex;flex-direction:column;gap:6px;width:100%}.progress-label-row{align-items:center;display:flex;font-size:12px;font-weight:700;justify-content:space-between}.progress-bar-bg{background:var(--bg-card-header);border-radius:10px;height:7px;overflow:hidden;width:100%}.progress-bar-fill{background:linear-gradient(90deg,var(--accent-hover) 0,#10b981 100%);border-radius:10px;height:100%;transition:width .4s ease}.courses-grid{grid-gap:22px;display:grid;gap:22px;grid-template-columns:repeat(auto-fill,minmax(340px,1fr))}.course-card-premium-student{background:var(--bg-card);border:1px solid var(--bg-card-header);border-radius:18px;box-shadow:0 12px 30px rgba(0,0,0,calc(var(--shadow-k)*.45));cursor:pointer;display:flex;flex-direction:column;padding:24px;position:relative;transition:all .28s cubic-bezier(.16,1,.3,1)}.course-card-premium-student:hover{border-color:#60a5fa66;box-shadow:0 18px 40px rgba(0,0,0,calc(var(--shadow-k)*.6)),0 0 25px #2563eb2e;transform:translateY(-5px)}.course-card-premium-student h3{color:var(--text-main);font-size:18px;font-weight:800;margin:0 0 8px}.course-card-premium-student p{color:var(--text-subtle);flex:1 1;font-size:13.5px;line-height:1.6;margin:0 0 16px}.course-card-footer{align-items:center;border-top:1px solid rgba(var(--hairline),.08);display:flex;gap:10px;justify-content:space-between;margin-top:18px;padding-top:14px}.teacher-tag{background:rgba(var(--hairline),.06);border:1px solid rgba(var(--hairline),.12);border-radius:8px;color:var(--text-muted);font-size:12px;font-weight:600;padding:5px 12px}.enter-course-link,.teacher-tag{align-items:center;display:inline-flex;gap:6px}.enter-course-link{background:#2563eb26;border:1px solid #60a5fa59;border-radius:8px;color:var(--fg-blue-300);font-size:12.5px;font-weight:750;padding:6px 14px;transition:all .2s ease}.course-card-premium-student:hover .enter-course-link{background:#2563eb4d;border-color:var(--accent-light);color:var(--text-main);transform:translateX(2px)}.student-workspace-layout{grid-gap:20px;align-items:start;box-sizing:border-box;display:grid;gap:20px;grid-template-columns:310px minmax(0,1fr);width:100%}.student-timeline-sidebar{background:var(--bg-card);border:1px solid var(--bg-card-header);border-radius:18px;box-shadow:0 12px 30px rgba(0,0,0,calc(var(--shadow-k)*.45));display:flex;flex-direction:column;min-width:0;padding:18px}.student-timeline-sidebar h3{align-items:center;color:var(--text-main);display:flex;font-size:15px;font-weight:800;gap:8px;margin:0 0 16px}.student-timeline-list{display:flex;flex-direction:column;gap:10px;max-height:75vh;overflow-y:auto}.student-timeline-card{align-items:center;background:var(--bg-card-header);border:1px solid var(--border-dark);border-radius:14px;cursor:pointer;display:flex;gap:12px;min-width:0;padding:12px 14px;transition:all .2s ease}.student-timeline-card:hover{background:var(--surface-raised);border-color:#475569;transform:translateX(3px)}.student-timeline-card.active{background:#2563eb29;border-color:var(--accent-light);box-shadow:0 0 16px #2563eb33}.student-timeline-card.completed{border-left:4px solid #10b981}.student-node-circle{align-items:center;background:var(--bg-card);border:1px solid #475569;border-radius:50%;color:var(--text-subtle);display:flex;flex-shrink:0;font-size:12px;font-weight:800;height:28px;justify-content:center;width:28px}.student-timeline-card.active .student-node-circle{background:linear-gradient(135deg,var(--accent-primary),var(--accent-hover));border-color:#93c5fd;box-shadow:0 0 10px #2563eb99;color:var(--fixed-50)}.student-timeline-card.completed .student-node-circle{background:#10b981;border-color:#34d399;color:var(--fixed-50)}.student-timeline-info h4{color:var(--text-main);font-size:13.5px;font-weight:750;margin:0 0 3px;word-break:break-word}.date-tag{color:var(--text-subtle);font-size:11px}.student-study-center{background:var(--bg-card);border:1px solid var(--bg-card-header);border-radius:18px;box-shadow:0 12px 30px rgba(0,0,0,calc(var(--shadow-k)*.45));box-sizing:border-box;min-height:600px;min-width:0;padding:24px}.study-center-header{align-items:center;border-bottom:1px solid rgba(var(--hairline),.08);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;margin-bottom:22px;padding-bottom:16px}.study-center-header h3{color:var(--text-main);font-size:18px;font-weight:850;margin:0}.session-progress-pill{align-items:center;border-radius:20px;display:inline-flex;font-size:12px;font-weight:750;gap:6px;padding:5px 14px}.session-progress-pill.completed{background:#10b98126;border:1px solid #34d39959;color:var(--fg-emerald-300)}.session-progress-pill.active{background:#2563eb26;border:1px solid #60a5fa59;color:var(--fg-blue-300)}.study-media-grid{grid-gap:14px;display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));margin-bottom:24px}.study-recording-card,.study-video-card{align-items:center;background:var(--bg-card-header);border:1px solid var(--border-dark);border-radius:14px;display:flex;justify-content:space-between;padding:16px 18px;text-decoration:none;transition:all .2s ease}.study-recording-card:hover,.study-video-card:hover{border-color:var(--accent-light);box-shadow:0 8px 20px rgba(0,0,0,calc(var(--shadow-k)*.4));transform:translateY(-2px)}.study-recording-card h5,.study-video-card h5{color:var(--text-main);font-size:14px;font-weight:750;margin:0 0 4px}.card-action-text{color:var(--accent-light);font-size:11.5px;font-weight:650}.play-btn-circle,.rec-btn-circle{align-items:center;background:linear-gradient(135deg,var(--accent-primary),var(--accent-hover));border-radius:50%;color:var(--fixed-50);display:flex;flex-shrink:0;font-size:13px;height:36px;justify-content:center;width:36px}.materials-section-premium{background:var(--surface-inset);border:1px solid var(--border-dark);border-radius:14px;margin-bottom:22px;padding:16px 18px}.materials-section-premium h4{align-items:center;color:var(--text-main);display:flex;font-size:14px;font-weight:800;gap:8px;margin:0 0 12px}.student-pdf-pills-row{display:flex;flex-wrap:wrap;gap:10px}.student-pdf-download-pill{align-items:center;background:var(--bg-card-header);border:1px solid var(--border-dark);border-radius:8px;color:var(--text-muted);display:inline-flex;font-size:12.5px;font-weight:650;gap:6px;padding:7px 14px;text-decoration:none;transition:all .2s ease}.student-pdf-download-pill:hover{background:var(--surface-raised);border-color:var(--accent-light);color:var(--text-main);transform:translateY(-2px)}.homework-section-premium{margin-bottom:24px}.homework-section-premium h4{align-items:center;display:flex;font-size:15px;font-weight:800;gap:8px;margin:0 0 14px}.student-hw-list{display:flex;flex-direction:column;gap:12px}.student-hw-card{align-items:center;background:var(--bg-card-header);border:1px solid var(--border-dark);border-radius:14px;box-shadow:0 4px 12px rgba(0,0,0,calc(var(--shadow-k)*.2));display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;padding:16px 20px;transition:all .2s ease}.student-hw-card:hover{border-color:#475569;transform:translateY(-2px)}.hw-card-info h5{color:var(--text-main);font-size:15px;font-weight:750;margin:0 0 4px}.hw-card-info p{color:var(--text-subtle);font-size:12.5px;margin:0}.hw-mark-display{background:#10b98126;border:1px solid #34d39959;border-radius:8px;color:var(--fg-emerald-300);font-size:12.5px;margin-top:8px;padding:3px 10px}.btn-hw-start,.hw-mark-display{align-items:center;display:inline-flex;font-weight:750;gap:6px}.btn-hw-start{border-radius:10px;cursor:pointer;font-size:13px;padding:9px 18px;text-decoration:none;transition:all .2s ease;white-space:nowrap}.btn-hw-start:hover{transform:translateY(-2px)}.completion-action-bar{border-top:1px solid rgba(var(--hairline),.08);display:flex;justify-content:flex-end;margin-top:30px;padding-top:20px}.mark-complete-btn-student{background:linear-gradient(135deg,#10b981,#059669);border:1px solid rgba(var(--hairline),.2);border-radius:10px;box-shadow:0 4px 14px #10b98166;color:var(--fixed-50);cursor:pointer;font-size:13.5px;font-weight:750;padding:10px 22px;transition:all .2s ease}.mark-complete-btn-student:hover{box-shadow:0 6px 18px #10b98199;transform:translateY(-2px)}.completed-badge-premium{align-items:center;background:#10b9812e;border:1px solid #34d39966;border-radius:10px;color:var(--fg-emerald-300);display:inline-flex;font-size:13px;font-weight:750;gap:6px;padding:8px 18px}@media (max-width:1024px){.student-workspace-layout{grid-template-columns:1fr}}.lcr-btn{align-items:center;background:#223149;background:var(--bg-card,#223149);border:1px solid #394e72;border:1px solid var(--border,#394e72);border-radius:10px;color:#f8fafc;color:var(--text-main,#f8fafc);cursor:pointer;display:inline-flex;font-size:14px;font-weight:700;gap:8px;padding:9px 16px;transition:filter .15s,transform .15s}.lcr-btn:hover{filter:brightness(1.08);transform:translateY(-1px)}.lcr-btn-student{margin:0 0 14px}.lcr-count{background:#2563eb;background:var(--accent-primary,#2563eb);border-radius:999px;color:#fff;font-size:12px;min-width:20px;padding:1px 6px;text-align:center}:root[data-brand=ais]:not([data-theme=light]) .lcr-count{color:#1b3a6b}.lcr-backdrop{align-items:center;background:#02061799;display:flex;inset:0;justify-content:center;padding:16px;position:fixed;z-index:100000}.lcr-dialog{background:#223149;background:var(--bg-card,#223149);border:1px solid #394e72;border:1px solid var(--border,#394e72);border-radius:16px;box-shadow:0 24px 60px rgba(0,0,0,calc(var(--shadow-k)*.35));color:#f8fafc;color:var(--text-main,#f8fafc);display:flex;flex-direction:column;max-height:calc(100vh - 32px);overflow:hidden;width:min(720px,100%)}.lcr-head{align-items:center;border-bottom:1px solid #394e72;border-bottom:1px solid var(--border,#394e72);display:flex;gap:10px;padding:14px 16px}.lcr-head strong{flex:1 1;font-size:16px}.lcr-icon{align-items:center;background:#0000;border:0;border-radius:8px;color:inherit;cursor:pointer;display:inline-flex;height:34px;justify-content:center;width:34px}.lcr-icon:hover{background:rgba(var(--hairline),.08);background:var(--surface-hover,rgba(var(--hairline),.08))}.lcr-icon:disabled{cursor:default;opacity:.4}.lcr-danger:hover{color:var(--error-text)}.lcr-player{background:#000}.lcr-player video{background:#000;display:block;max-height:50vh;width:100%}.lcr-player span{background:#0b1220;color:#cbd5e1;display:block;font-size:13px;padding:8px 16px}.lcr-error{color:var(--error-text)}.lcr-error,.lcr-note{font-size:13px;margin:10px 16px 0}.lcr-note{align-items:center;display:flex;gap:6px}.lcr-copied,.lcr-note{color:#22c55e;color:var(--success-text,#22c55e)}.lcr-list{overflow-y:auto;padding:8px}.lcr-empty{color:#94a3b8;color:var(--text-subtle,#94a3b8);font-size:14px;padding:24px 12px;text-align:center}.lcr-row{align-items:center;border-radius:12px;display:flex;gap:12px;padding:10px}.lcr-active,.lcr-row:hover{background:rgba(var(--hairline),.06);background:var(--surface-hover,rgba(var(--hairline),.06))}.lcr-thumb{align-items:center;background:#2563eb;background:var(--accent-primary,#2563eb);border:0;border-radius:8px;color:#fff;cursor:pointer;display:inline-flex;flex-shrink:0;height:40px;justify-content:center;width:64px}:root[data-brand=ais]:not([data-theme=light]) .lcr-thumb{color:#1b3a6b}.lcr-thumb:disabled{background:#25354f;background:var(--surface-muted,#25354f);color:#94a3b8;color:var(--text-subtle,#94a3b8);cursor:default}.lcr-info{display:flex;flex:1 1;flex-direction:column;gap:2px;min-width:0}.lcr-info strong{font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lcr-info span{font-size:12px}.lcr-chip,.lcr-info span{color:#94a3b8;color:var(--text-subtle,#94a3b8)}.lcr-chip{background:#25354f;background:var(--surface-muted,#25354f);border-radius:999px;flex-shrink:0;font-size:11px;font-weight:700;padding:2px 8px}.lcr-rec{background:#e0282826}.lcr-failed,.lcr-rec{color:var(--error-text)}.lcr-failed{background:#ef44441f}.lcr-actions{display:flex;flex-shrink:0;gap:2px}.lcr-clip{margin-inline-start:28px;padding-block:6px}.lcr-thumb-clip{background:#25354f;background:var(--surface-muted,#25354f);height:32px;width:44px}.lcr-thumb-clip,:root[data-brand=ais]:not([data-theme=light]) .lcr-thumb-clip{color:#60a5fa;color:var(--accent-primary,#60a5fa)}.lcr-sub{align-items:center;background:#0000;border:0;border-radius:8px;color:#94a3b8;color:var(--text-subtle,#94a3b8);display:flex;font-size:12px;font-weight:600;gap:6px;margin:0 0 4px;margin-inline-start:38px;padding:4px 8px}.lcr-sub-toggle{color:#60a5fa;color:var(--accent-primary,#60a5fa);cursor:pointer}.lcr-sub-toggle:hover{background:rgba(var(--hairline),.06);background:var(--surface-hover,rgba(var(--hairline),.06))}.lcr-sub-failed{color:var(--error-text)}.lcr-child-clips .lcr-list{padding:0}.lcr-child-clips .lcr-clip{margin-inline-start:0}.lcr-child-clips .lcr-player{border-radius:12px;margin-bottom:8px;overflow:hidden}.lcr-hint{color:#94a3b8;color:var(--text-subtle,#94a3b8);font-size:13px;margin:0 0 10px}.lcr-page{align-items:flex-start;background:#0f172a;background:var(--bg-main,#0f172a);color:#f8fafc;color:var(--text-main,#f8fafc);display:flex;justify-content:center;min-height:100vh;padding:32px 16px}.lcr-page-card{background:#223149;background:var(--bg-card,#223149);border:1px solid #394e72;border:1px solid var(--border,#394e72);border-radius:16px;overflow:hidden;width:min(960px,100%)}.lcr-page-card .lcr-player video{max-height:70vh}.lcr-page-head{align-items:center;display:flex;gap:12px;padding:16px}.lcr-page-head .lcr-info strong{font-size:17px;white-space:normal}.lcr-page-msg{align-items:center;display:flex;flex-direction:column;font-size:15px;gap:14px;padding:40px 20px;text-align:center}.lcr-page-msg .lcr-btn{text-decoration:none}@media (max-width:600px){.lcr-clip{margin-inline-start:12px}.lcr-sub{margin-inline-start:16px}.lcr-thumb{width:44px}.lcr-btn-student{justify-content:center;width:100%}}.sa-root{--sa-surface:var(--bg-card,#263248);--sa-ink:var(--text-main,#f0f4fa);--sa-ink-2:var(--text-subtle,#98a6bb);--sa-line:var(--border-dark,#3f4e69);--sa-s1:#3987e5;--sa-s2:#d95926;--sa-heat-0:#98a6bb29;--sa-heat-1:#184f95;--sa-heat-2:#256abf;--sa-heat-3:#3987e5;--sa-heat-4:#86b6ef;--sa-tip-bg:#0f172a;--sa-tip-ink:#f0f4fa;color:var(--sa-ink);display:flex;flex-direction:column;font-family:inherit;gap:16px;min-width:0}:root[data-theme=light] .sa-root{--sa-s1:#2a78d6;--sa-s2:#eb6834;--sa-heat-0:#e6ebf2;--sa-heat-1:#b7d3f6;--sa-heat-2:#6da7ec;--sa-heat-3:#2a78d6;--sa-heat-4:#184f95;--sa-tip-bg:#121b2b}.sa-root *,.sa-root :after,.sa-root :before{box-sizing:border-box}.sa-tiles{grid-gap:12px;display:grid;gap:12px;grid-template-columns:repeat(4,minmax(0,1fr))}.sa-tile{background:var(--sa-surface);border:1px solid var(--sa-line);border-radius:12px;min-width:0;padding:14px 16px}.sa-tile-label{color:var(--sa-ink-2);font-size:12px;font-weight:600}.sa-tile-value{font-feature-settings:"tnum";font-size:28px;font-variant-numeric:tabular-nums;font-weight:800;line-height:1.2;margin-top:4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sa-tile-value-text{-webkit-line-clamp:2;-webkit-box-orient:vertical;display:-webkit-box;font-size:18px;line-height:1.3;overflow-wrap:anywhere;padding:3px 0;white-space:normal}.sa-tile-note{color:var(--sa-ink-2);font-size:12px;margin-top:2px}.sa-grid{grid-gap:16px;display:grid;gap:16px;grid-template-columns:repeat(2,minmax(0,1fr))}.sa-span-2{grid-column:1/-1;min-width:0}.sa-stack{display:flex;flex-direction:column;gap:16px;min-width:0}.sa-stack>.sa-card{height:auto}.sa-card{background:var(--sa-surface);border:1px solid var(--sa-line);border-radius:12px;height:100%;min-width:0;padding:16px 18px}.sa-card-head{align-items:flex-start;display:flex;gap:12px;justify-content:space-between;margin-bottom:12px}.sa-card-title{color:var(--sa-ink);font-size:16px;font-weight:700;margin:0}.sa-card-sub{color:var(--sa-ink-2);font-size:12.5px;margin:2px 0 0}.sa-note{font-size:12px;margin:-4px 0 8px}.sa-muted,.sa-note{color:var(--sa-ink-2)}.sa-muted{font-weight:400}.sa-link-btn{background:none;border:1px solid var(--sa-line);border-radius:8px;color:var(--sa-ink);cursor:pointer;font-family:inherit;font-size:12.5px;font-weight:600;padding:5px 10px;white-space:nowrap}.sa-link-btn:hover{border-color:var(--sa-s1)}.sa-link-btn:focus-visible{outline:2px solid var(--sa-s1);outline-offset:2px}.sa-more{margin-top:10px}.sa-legend{display:flex;flex-wrap:wrap;font-size:13px;gap:6px 18px;margin-bottom:8px}.sa-legend-item{align-items:center;display:inline-flex;gap:6px}.sa-legend-latest{color:var(--sa-ink-2)}.sa-swatch{border-radius:50%;display:inline-block;height:12px;width:12px}.sa-swatch.sa-s1{background:var(--sa-s1)}.sa-swatch.sa-s2{background:var(--sa-s2)}.sa-plot{min-width:0;overflow:hidden;position:relative;width:100%}.sa-plot svg{display:block;touch-action:pan-y}.sa-gridline{stroke:var(--sa-line);stroke-width:1;opacity:.7}.sa-axis-text{fill:var(--sa-ink-2);font-family:inherit;font-size:11px}.sa-crosshair{stroke:var(--sa-ink-2);stroke-width:1;stroke-dasharray:3 3}.sa-line{fill:none;stroke-width:2;stroke-linejoin:round;stroke-linecap:round}.sa-s1 .sa-line{stroke:var(--sa-s1)}.sa-s2 .sa-line{stroke:var(--sa-s2)}.sa-dot{stroke:var(--sa-surface);stroke-width:2}.sa-s1 .sa-dot{fill:var(--sa-s1)}.sa-s2 .sa-dot{fill:var(--sa-s2)}.sa-tooltip{background:var(--sa-tip-bg);border-radius:8px;box-shadow:0 6px 20px #0000004d;color:var(--sa-tip-ink);font-size:12px;line-height:1.45;padding:8px 10px;pointer-events:none;position:absolute;z-index:5}.sa-tip-title{font-weight:700;margin-bottom:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sa-tip-row{display:flex;gap:10px;justify-content:space-between}.sa-bars{display:flex;flex-direction:column;gap:2px;list-style:none;margin:0;padding:0}.sa-bar-row{grid-gap:10px;align-items:center;border-radius:6px;display:grid;font-size:13px;gap:10px;grid-template-columns:minmax(80px,34%) minmax(0,1fr) auto;padding:5px 6px}.sa-bar-row-active{background:#7f7f7f1a}.sa-bar-name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sa-bar-track{display:block;height:14px;position:relative}.sa-bar-track:before{background:var(--sa-line);content:"";inset:0;opacity:.35}.sa-bar-fill,.sa-bar-track:before{border-radius:0 4px 4px 0;position:absolute}.sa-bar-fill{background:var(--sa-s1);bottom:0;left:0;top:0}.sa-bar-value{font-feature-settings:"tnum";font-size:12.5px;font-variant-numeric:tabular-nums;min-width:72px;text-align:right;white-space:nowrap}.sa-heat{stroke:var(--sa-surface);stroke-width:1}.sa-heat-active{stroke:var(--sa-ink);stroke-width:1.5}.sa-heat-0{fill:var(--sa-heat-0);background:var(--sa-heat-0)}.sa-heat-1{fill:var(--sa-heat-1);background:var(--sa-heat-1)}.sa-heat-2{fill:var(--sa-heat-2);background:var(--sa-heat-2)}.sa-heat-3{fill:var(--sa-heat-3);background:var(--sa-heat-3)}.sa-heat-4{fill:var(--sa-heat-4);background:var(--sa-heat-4)}.sa-heat-legend{align-items:center;color:var(--sa-ink-2);display:flex;font-size:11.5px;gap:4px;margin-top:10px}.sa-heat-key{border-radius:3px;display:inline-block;height:12px;width:12px}.sa-heat-legend span:first-child{margin-right:2px}.sa-heat-legend span:last-child{margin-left:2px}.sa-table-wrap{max-height:320px;overflow:auto}.sa-table{border-collapse:collapse;font-size:13px;width:100%}.sa-table td,.sa-table th{border-bottom:1px solid var(--sa-line);padding:7px 8px;text-align:left}.sa-table th{background:var(--sa-surface);color:var(--sa-ink-2);font-weight:600;position:-webkit-sticky;position:sticky;top:0}.sa-num{font-feature-settings:"tnum";font-variant-numeric:tabular-nums;text-align:right!important;white-space:nowrap}.sa-status{align-items:center;background:var(--sa-surface);border:1px solid var(--sa-line);border-radius:12px;color:var(--sa-ink-2);display:flex;font-size:14px;gap:10px;justify-content:center;padding:28px 20px;text-align:center}.sa-status-error{color:#ef4444;color:var(--error-text,#ef4444)}.sa-empty-small{color:var(--sa-ink-2);font-size:13px;margin:4px 0}.sa-spinner{animation:sa-spin .8s linear infinite;border:2px solid var(--sa-line);border-radius:50%;border-top-color:var(--sa-s1);height:18px;width:18px}@keyframes sa-spin{to{transform:rotate(1turn)}}@media (max-width:900px){.sa-tiles{grid-template-columns:repeat(2,minmax(0,1fr))}.sa-grid{grid-template-columns:minmax(0,1fr)}}@media (max-width:420px){.sa-tile-value{font-size:22px}.sa-bar-row{gap:8px;grid-template-columns:minmax(70px,40%) minmax(0,1fr) auto}.sa-bar-value{min-width:0}.sa-card{padding:14px}}@media (prefers-reduced-motion:reduce){.sa-spinner{animation:none}}.student-analysis-page{background:var(--bg-main);color:var(--text-main);min-height:100vh}.student-analysis-main{margin:0 auto;max-width:1120px;padding:24px 16px 96px}@media (min-width:769px){.student-analysis-main{padding-top:96px}}.student-analysis-head{margin-bottom:18px}.student-analysis-head h1{color:var(--text-main);font-size:26px;font-weight:800;margin:10px 0 4px}.student-analysis-head p{color:var(--text-subtle);font-size:14px;margin:0}.student-analysis-back{color:var(--text-subtle);display:inline-block;font-size:13px;font-weight:600;text-decoration:none}.student-analysis-back:hover{color:var(--text-main)}.trial-banner{background:var(--accent-primary);box-shadow:0 2px 8px rgba(0,0,0,calc(var(--shadow-k)*.15));padding:.875rem 1.5rem;position:-webkit-sticky;position:sticky;top:0;z-index:100}.trial-banner-content{align-items:center;display:flex;gap:1rem;justify-content:space-between;margin:0 auto;max-width:1200px}.trial-banner-text{color:#fff;flex:1 1;font-size:15px;font-weight:600;margin:0}.trial-banner-btn{background:var(--bg-ffffff);border:none;border-radius:8px;color:var(--accent-text);cursor:pointer;font-size:14px;font-weight:700;padding:.625rem 1.5rem;transition:all .2s ease;white-space:nowrap}.trial-banner-btn:hover{box-shadow:0 4px 12px rgba(0,0,0,calc(var(--shadow-k)*.2));transform:translateY(-2px)}.trial-banner-btn:active{transform:translateY(0)}@media only screen and (max-width:600px){.trial-banner{padding:.75rem 1rem}.trial-banner-content{flex-direction:column;gap:.75rem;text-align:center}.trial-banner-text{font-size:13px}.trial-banner-btn{font-size:13px;padding:.5rem 1.25rem}}.upgrade-prompt{animation:slideIn .4s ease;background:var(--accent-primary);border-radius:16px;box-shadow:0 10px 40px #667eea4d;margin:1.5rem 0;padding:2rem}@keyframes slideIn{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}.upgrade-prompt-icon{margin-bottom:1rem;text-align:center}.upgrade-prompt-icon span{animation:bounce 2s infinite;display:inline-block;font-size:48px}@keyframes bounce{0%,to{transform:translateY(0)}50%{transform:translateY(-10px)}}.upgrade-prompt-content{color:#fff;text-align:center}.upgrade-prompt-title{color:#fff;font-size:26px;font-weight:800;margin:0 0 .75rem}.upgrade-prompt-message{color:#fffffff2;font-size:16px;line-height:1.5;margin:0 0 1.5rem}.upgrade-prompt-features{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#ffffff1a;border-radius:12px;display:flex;flex-direction:column;gap:.75rem;margin-bottom:1.5rem;padding:1.25rem}.upgrade-feature-item{align-items:center;color:#fff;display:flex;font-size:15px;gap:.75rem;text-align:left}.upgrade-check{align-items:center;background:rgba(var(--glass-900),.95);border-radius:50%;display:flex;flex-shrink:0;font-size:16px;height:24px;justify-content:center;width:24px}.upgrade-check,.upgrade-prompt-btn{color:var(--accent-text);font-weight:700}.upgrade-prompt-btn{background:var(--bg-ffffff);border:none;border-radius:12px;box-shadow:0 4px 15px rgba(0,0,0,calc(var(--shadow-k)*.2));cursor:pointer;font-size:18px;max-width:300px;padding:1rem 2.5rem;transition:all .3s ease;width:100%}.upgrade-prompt-btn:hover{background:var(--bg-f8f9fa);box-shadow:0 6px 25px rgba(0,0,0,calc(var(--shadow-k)*.3));transform:translateY(-3px)}.upgrade-prompt-btn:active{transform:translateY(-1px)}.upgrade-prompt-note{color:#ffffffd9;font-size:13px;margin:1rem 0 0}@media only screen and (max-width:768px){.upgrade-prompt{padding:1.5rem}.upgrade-prompt-title{font-size:22px}.upgrade-prompt-message{font-size:15px}.upgrade-prompt-btn{font-size:16px;padding:.875rem 2rem}}@media only screen and (max-width:600px){.upgrade-prompt{padding:1.25rem}.upgrade-prompt-icon span{font-size:40px}.upgrade-prompt-title{font-size:20px}.upgrade-feature-item{font-size:14px}}.question-html{color:var(--fg-333333);font-size:16px;line-height:1.6}.question-html p{margin-bottom:1em}.question-html b,.question-html strong{font-weight:700}.question-html em,.question-html i{font-style:italic}.question-html u{text-decoration:underline}.question-html ol,.question-html ul{margin-bottom:1em;padding-left:2em}.question-html br,.question-html li{margin-bottom:.5em}.question-html br{display:block}.question-html span{display:inline}.question-html img{border-radius:4px;height:auto;margin:1em 0;max-width:100%}.teacher-dashboard-container{font-family:Inter,-apple-system,BlinkMacSystemFont,sans-serif;margin:40px auto;max-width:1200px;padding:0 24px}.dashboard-header-banner{align-items:center;background:radial-gradient(circle at 85% 30%,#2563eb2e 0,#182337f2 70%),var(--bg-card);border:1px solid rgba(var(--hairline),.12);border-radius:16px;box-shadow:0 8px 32px rgba(0,0,0,calc(var(--shadow-k)*.3));display:flex;justify-content:space-between;margin-bottom:40px;padding:32px}.dashboard-header-title h2{align-items:center;color:var(--text-main);display:flex;font-size:28px;font-weight:800;margin:0 0 8px}.dashboard-header-title p{color:var(--text-subtle);font-size:16px;margin:0}.header-stat-badge{align-items:center;background:#2563eb26;border:1px solid #60a5fa4d;border-radius:12px;display:flex;flex-direction:column;padding:16px 28px}.stat-badge-value{color:var(--accent-light);font-size:32px;font-weight:800;line-height:1;margin-bottom:4px}.stat-badge-label{color:var(--fg-blue-300);font-size:13px;font-weight:600;letter-spacing:.5px;text-transform:uppercase}.teacher-kpi-stats-grid{grid-gap:20px;display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));margin-bottom:32px}.kpi-stat-card-premium{align-items:center;background:var(--bg-card);border:1px solid var(--border-dark);border-radius:16px;box-shadow:0 4px 14px rgba(0,0,0,calc(var(--shadow-k)*.15));display:flex;gap:18px;padding:22px 24px;transition:transform .2s ease,box-shadow .2s ease}.kpi-stat-card-premium:hover{box-shadow:0 8px 24px rgba(0,0,0,calc(var(--shadow-k)*.25));transform:translateY(-2px)}.kpi-icon-wrap{align-items:center;border-radius:14px;display:flex;flex-shrink:0;font-size:22px;height:52px;justify-content:center;width:52px}.kpi-icon-blue{background:var(--bg-eff6ff);color:var(--accent-text)}.kpi-icon-purple{background:var(--bg-f5f3ff);color:var(--fg-7c3aed)}.kpi-icon-emerald{background:var(--bg-ecfdf5);color:var(--success-text)}.kpi-stat-info h4{color:var(--text-subtle);font-size:13px;font-weight:700;letter-spacing:.5px;margin:0 0 4px;text-transform:uppercase}.kpi-stat-info .kpi-number{color:var(--text-main);font-size:28px;font-weight:800;line-height:1.1;margin:0}.teacher-quick-actions-bar{align-items:center;display:flex;flex-wrap:wrap;gap:12px}.teacher-action-btn-pill{align-items:center;border:none;border-radius:10px;cursor:pointer;display:inline-flex;font-size:14px;font-weight:700;gap:8px;padding:10px 20px;text-decoration:none;transition:all .2s ease}.teacher-action-btn-pill.primary{background:var(--accent-primary);box-shadow:0 4px 12px #2563eb40;color:#fff}.teacher-action-btn-pill.primary:hover{background:var(--accent-active);transform:translateY(-1px)}.teacher-action-btn-pill.secondary{background:rgba(var(--hairline),.08);border:1.5px solid rgba(var(--hairline),.16);color:var(--text-main)}.teacher-action-btn-pill.secondary:hover{background:rgba(var(--hairline),.16);border-color:rgba(var(--hairline),.3);transform:translateY(-1px)}.teacher-section-title-wrap{align-items:center;display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;margin:36px 0 20px}.teacher-section-title-wrap h3{align-items:center;color:var(--text-main);display:flex;font-size:22px;font-weight:800;gap:10px;margin:0}.classes-roster-grid{grid-gap:22px;display:grid;gap:22px;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));margin-bottom:40px}.class-roster-card{background:var(--bg-card);border:1.5px solid var(--border-dark);border-radius:16px;box-shadow:0 4px 14px rgba(0,0,0,calc(var(--shadow-k)*.15));display:flex;flex-direction:column;justify-content:space-between;padding:22px 24px;transition:all .2s ease}.class-roster-card:hover{border-color:#93c5fd;box-shadow:0 10px 24px #2563eb14;transform:translateY(-2px)}.class-card-top{align-items:flex-start;display:flex;justify-content:space-between;margin-bottom:16px}.class-badge-icon{align-items:center;background:var(--bg-eff6ff);border-radius:12px;color:var(--accent-text);display:flex;font-size:18px;font-weight:800;height:44px;justify-content:center;width:44px}.class-roster-name{color:var(--text-main);font-size:18px;font-weight:800;margin:0 0 6px}.class-student-count-pill{align-items:center;background:rgba(var(--hairline),.08);border-radius:20px;color:var(--text-muted);display:inline-flex;font-size:12.5px;font-weight:700;gap:6px;padding:4px 10px}.class-roster-preview-avatars{align-items:center;display:flex;gap:-8px;margin:14px 0 20px}.roster-mini-avatar{align-items:center;background:var(--bg-e0e7ff);border:2px solid #fff;border-radius:50%;color:var(--fg-4338ca);display:flex;font-size:12px;font-weight:800;height:32px;justify-content:center;margin-right:-8px;width:32px}.class-roster-actions{display:flex;gap:10px;margin-top:auto}.class-roster-btn{align-items:center;border:none;border-radius:8px;cursor:pointer;display:inline-flex;flex:1 1;font-size:13px;font-weight:700;gap:6px;justify-content:center;padding:9px 12px;transition:all .15s ease}.class-roster-btn.primary{background:var(--accent-primary);color:#fff}.class-roster-btn.primary:hover{background:var(--accent-active)}.class-roster-btn.secondary{background:rgba(var(--hairline),.08);border:1px solid var(--border-dark);color:var(--text-main)}.class-roster-btn.secondary:hover{background:rgba(var(--hairline),.16)}.roster-drawer-modal-backdrop{animation:fadeInBackdrop .25s ease;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#0f172a99;display:flex;inset:0;justify-content:flex-end;position:fixed;z-index:9999}@keyframes fadeInBackdrop{0%{opacity:0}to{opacity:1}}.roster-drawer-panel{animation:slideInRight .3s cubic-bezier(.16,1,.3,1);background:var(--bg-card);border-left:1px solid var(--border-dark);box-shadow:-10px 0 30px rgba(0,0,0,calc(var(--shadow-k)*.4));display:flex;flex-direction:column;height:100%;width:min(520px,92vw)}@keyframes slideInRight{0%{transform:translateX(100%)}to{transform:translateX(0)}}.roster-drawer-header{align-items:flex-start;background:var(--bg-card-header);border-bottom:1px solid var(--border-dark);display:flex;justify-content:space-between;padding:24px 28px}.roster-drawer-title-group h3{color:var(--text-main);font-size:20px;font-weight:800;margin:0 0 6px}.roster-drawer-title-group p{color:var(--text-subtle);font-size:13.5px;margin:0}.roster-drawer-close-btn{align-items:center;background:rgba(var(--hairline),.08);border:1px solid var(--border-dark);border-radius:8px;color:var(--text-muted);cursor:pointer;display:flex;font-size:16px;height:36px;justify-content:center;transition:all .15s ease;width:36px}.roster-drawer-close-btn:hover{background:var(--bg-fee2e2);border-color:#fca5a5;color:var(--fg-dc2626)}.roster-drawer-search-box{border-bottom:1px solid var(--border-dark);padding:16px 28px;position:relative}.roster-drawer-search-box input{background:rgba(var(--hairline),.05);border:1.5px solid var(--border-dark);border-radius:10px;box-sizing:border-box;color:var(--text-main);font-size:14px;outline:none;padding:10px 14px 10px 38px;transition:border-color .2s ease;width:100%}.roster-drawer-search-box input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px #2563eb1f}.roster-search-icon{color:var(--text-subtle);font-size:14px;left:40px;position:absolute;top:50%;transform:translateY(-50%)}.roster-drawer-body{display:flex;flex:1 1;flex-direction:column;gap:12px;overflow-y:auto;padding:20px 28px}.roster-student-item-card{align-items:center;background:var(--bg-main);border:1.5px solid var(--border-dark);border-radius:12px;display:flex;gap:14px;justify-content:space-between;padding:14px 16px;transition:all .15s ease}.roster-student-item-card:hover{background:rgba(var(--hairline),.04);border-color:#60a5fa;transform:translateX(2px)}.roster-student-info{align-items:center;display:flex;gap:12px;min-width:0}.roster-student-avatar{align-items:center;background:var(--bg-eff6ff);border-radius:50%;color:var(--accent-text);display:flex;flex-shrink:0;font-size:15px;font-weight:800;height:40px;justify-content:center;width:40px}.roster-student-details h5{color:var(--text-main);font-size:14.5px;font-weight:700;margin:0 0 2px}.roster-student-details h5,.roster-student-details span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.roster-student-details span{color:var(--text-subtle);display:block;font-size:12px}.roster-student-history-link{align-items:center;background:var(--bg-eff6ff);border:1px solid var(--line-bfdbfe);border-radius:8px;color:var(--accent-text);display:inline-flex;font-size:12px;font-weight:700;gap:5px;padding:6px 12px;text-decoration:none;transition:all .15s ease;white-space:nowrap}.roster-student-history-link:hover{background:var(--accent-primary);border-color:var(--accent-primary);color:#fff}.assignments-search-input{background:rgba(var(--hairline),.05);border:1.5px solid var(--border-dark);border-radius:10px;color:var(--text-main);font-size:14px;min-width:260px;outline:none;padding:10px 16px;transition:border-color .2s ease}.assignments-search-input:focus{border-color:var(--accent-primary)}.assignments-grid-container{grid-gap:24px;display:grid;gap:24px;grid-template-columns:1fr}.empty-assignments-box{background:var(--bg-card);border:2px dashed var(--border-dark);border-radius:16px;margin:20px 0;padding:64px 32px;text-align:center}.empty-box-icon{color:var(--text-subtle);font-size:48px;margin-bottom:20px}.empty-assignments-box h3{color:var(--text-main);font-size:22px;font-weight:700;margin:0 0 12px}.empty-assignments-box p{color:var(--text-subtle);font-size:16px;margin:0 auto 28px;max-width:500px}.create-first-assignment-btn{background:var(--accent-primary);border-radius:8px;box-shadow:0 4px 12px #2563eb33;color:#fff;display:inline-block;font-size:16px;font-weight:600;padding:14px 32px;text-decoration:none;transition:all .2s ease}.create-first-assignment-btn:hover{background:var(--accent-active);transform:translateY(-2px)}.assignment-executive-card{background:var(--bg-card);border:1px solid var(--border-dark);border-radius:16px;box-shadow:0 4px 12px rgba(0,0,0,calc(var(--shadow-k)*.15));overflow:hidden;transition:all .2s ease}.assignment-executive-card:hover{border-color:#6366f166;box-shadow:0 8px 24px rgba(0,0,0,calc(var(--shadow-k)*.25));transform:translateY(-2px)}.executive-card-header{align-items:center;background:var(--bg-card-header);border-bottom:1px solid var(--border-dark);display:flex;justify-content:space-between;padding:24px 28px}.executive-title-area{align-items:center;display:flex;gap:12px}.assignment-status-dot{background:#10b981;border-radius:50%;box-shadow:0 0 10px #10b98166;height:10px;width:10px}.assignment-executive-title{color:var(--text-main);font-size:20px;font-weight:700;margin:0}.executive-meta-badges{align-items:center;display:flex;gap:12px}.meta-badge{align-items:center;border-radius:20px;display:flex;font-size:13px;font-weight:600;gap:6px;padding:6px 12px}.points-badge{background:var(--bg-fef3c7);border:1px solid var(--line-fde68a);color:var(--warning-text)}.questions-badge{background:var(--bg-f1f5f9);border:1px solid var(--line-e2e8f0);color:var(--fg-475569)}.students-badge{background:var(--bg-f0fdf4);border:1px solid var(--line-dcfce7);color:var(--success-text)}.executive-card-body{align-items:center;display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;padding:24px 28px}.executive-classes-assigned{align-items:center;display:flex;gap:12px}.assigned-label{color:var(--text-dim);font-size:14px;font-weight:600}.assigned-tags-list{display:flex;flex-wrap:wrap;gap:8px}.class-tag-badge{background:var(--bg-e0f2fe);border:1px solid var(--line-bae6fd);border-radius:6px;color:var(--fg-0369a1);font-size:13px;font-weight:600;padding:4px 12px}.general-badge{background:var(--bg-f1f5f9);border-color:var(--line-e2e8f0);color:var(--text-dim)}.executive-timing-info{align-items:center;display:flex;gap:16px}.timing-tag{align-items:center;color:var(--text-dim);display:flex;font-size:13px;gap:6px}.executive-card-actions{align-items:center;background:var(--bg-f8fafc);border-top:1px solid var(--fixed-100);display:flex;justify-content:space-between;padding:16px 28px}.action-btn-group-left,.action-btn-group-right{align-items:center;display:flex;gap:12px}.executive-action-btn{align-items:center;border:none;border-radius:8px;cursor:pointer;display:flex;font-size:14px;font-weight:600;gap:8px;padding:10px 20px;text-decoration:none;transition:all .2s ease}.primary-action-btn{background:var(--accent-primary);box-shadow:0 2px 8px #2563eb26;color:#fff}.primary-action-btn:hover{background:var(--accent-active);transform:translateY(-1px)}.pdf-action-btn{background:var(--bg-f1f5f9);border:1px solid var(--line-e2e8f0);color:var(--fg-dc2626)}.pdf-action-btn:hover{background:var(--bg-fee2e2);border-color:#fca5a5;transform:translateY(-1px)}.secondary-action-btn{background:var(--bg-ffffff);border:1px solid var(--line-cbd5e1);color:var(--fg-475569)}.secondary-action-btn:hover{background:var(--bg-f1f5f9);color:var(--fg-1e293b);transform:translateY(-1px)}.delete-action-btn{background:var(--bg-ffffff);border:1px solid #fca5a5;color:var(--error-text)}.delete-action-btn:hover{background:var(--bg-fef2f2);border-color:#ef4444;color:var(--fg-dc2626);transform:translateY(-1px)}@media (max-width:768px){.dashboard-header-banner{flex-direction:column;gap:20px;padding:24px;text-align:center}.executive-card-header{gap:16px}.executive-card-body,.executive-card-header{align-items:flex-start;flex-direction:column;padding:20px}.executive-card-actions{flex-direction:column;gap:16px;padding:20px}.action-btn-group-left,.action-btn-group-right{flex-direction:column;width:100%}.executive-action-btn{justify-content:center;width:100%}}:root[data-theme=light] .dashboard-header-banner{background:linear-gradient(135deg,#fff,#f8fafc);border:1px solid #e2e8f0;box-shadow:0 4px 20px #00000008}:root[data-theme=light] .dashboard-header-title h2{color:#0f172a}:root[data-theme=light] .dashboard-header-title p{color:#64748b}:root[data-theme=light] .header-stat-badge{background:#eff6ff;border:1px solid #bfdbfe}:root[data-theme=light] .stat-badge-value{color:var(--accent-text)}:root[data-theme=light] .stat-badge-label{color:#1d4ed8}:root[data-theme=light] .teacher-action-btn-pill.secondary{background:#fff;border:1.5px solid #cbd5e1;color:#334155}:root[data-theme=light] .teacher-action-btn-pill.secondary:hover{background:#f8fafc;border-color:#94a3b8}:root[data-theme=light] .kpi-stat-card-premium{background:#fff;border:1px solid #e2e8f0;box-shadow:0 4px 14px #00000008}:root[data-theme=light] .kpi-stat-info h4{color:#64748b}:root[data-theme=light] .kpi-stat-info .kpi-number,:root[data-theme=light] .teacher-section-title-wrap h3{color:#0f172a}:root[data-theme=light] .class-roster-card{background:#fff;border:1.5px solid #e2e8f0;box-shadow:0 4px 14px #00000008}:root[data-theme=light] .class-roster-name{color:#0f172a}:root[data-theme=light] .class-student-count-pill{background:#f1f5f9;color:#475569}:root[data-theme=light] .class-roster-btn.secondary{background:#fff;border:1px solid #cbd5e1;color:#334155}:root[data-theme=light] .class-roster-btn.secondary:hover{background:#f8fafc}:root[data-theme=light] .roster-drawer-panel{background:#fff;border-left:1px solid #e2e8f0;box-shadow:-10px 0 30px rgba(0,0,0,calc(var(--shadow-k)*.15))}:root[data-theme=light] .roster-drawer-header{background:#f8fafc;border-bottom:1px solid #e2e8f0}:root[data-theme=light] .roster-drawer-title-group h3{color:#0f172a}:root[data-theme=light] .roster-drawer-title-group p{color:#64748b}:root[data-theme=light] .roster-drawer-close-btn{background:#fff;border:1px solid #cbd5e1;color:#64748b}:root[data-theme=light] .roster-drawer-search-box{border-bottom:1px solid #e2e8f0}:root[data-theme=light] .roster-drawer-search-box input{background:#fff;border:1.5px solid #cbd5e1;color:#0f172a}:root[data-theme=light] .roster-student-item-card{background:#fff;border:1.5px solid #e2e8f0}:root[data-theme=light] .roster-student-item-card:hover{background:#f8fafc;border-color:#93c5fd}:root[data-theme=light] .roster-student-details h5{color:#0f172a}:root[data-theme=light] .roster-student-details span{color:#64748b}:root[data-theme=light] .assignments-search-input{background:#fff;border:1.5px solid #cbd5e1;color:#0f172a}:root[data-theme=light] .empty-assignments-box{background:#fff;border:2px dashed #cbd5e1}:root[data-theme=light] .empty-assignments-box h3{color:#334155}:root[data-theme=light] .empty-assignments-box p{color:#64748b}:root[data-theme=light] .assignment-executive-card{background:#fff;border:1px solid #e2e8f0;box-shadow:0 4px 12px #00000008}:root[data-theme=light] .assignment-executive-card:hover{border-color:#cbd5e1;box-shadow:0 8px 24px #0000000f}:root[data-theme=light] .executive-card-header{background:#f8fafc;border-bottom:1px solid #e2e8f0}:root[data-theme=light] .assignment-executive-title{color:#0f172a}@media (min-width:769px){.teacher-dashboard-container{margin-top:95px}}.course-studio-page-wrapper{background-color:var(--bg-main);box-sizing:border-box;color:var(--text-main);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;min-height:100vh}.course-studio-inner{margin:0 auto;max-width:1280px;padding:95px 24px 70px}.studio-unified-header-card{align-items:center;background:radial-gradient(circle at 85% 30%,#2563eb38 0,rgba(var(--glass-900),.95) 70%),var(--bg-card);border:1px solid rgba(var(--hairline),.12);border-radius:20px;box-shadow:0 16px 36px rgba(0,0,0,calc(var(--shadow-k)*.5)),0 0 25px #2563eb1a;display:flex;gap:24px;justify-content:space-between;margin-bottom:26px;overflow:hidden;padding:28px 32px;position:relative}.studio-badge-pill{align-items:center;background:#2563eb26;border:1px solid #60a5fa4d;border-radius:50px;color:var(--accent-light);display:inline-flex;font-size:11.5px;font-weight:750;gap:6px;letter-spacing:.03em;margin-bottom:8px;padding:4px 10px}.studio-main-title{color:var(--text-main);font-size:26px;font-weight:850;letter-spacing:-.02em;margin:0 0 6px}.title-gradient-blue{-webkit-text-fill-color:#0000;background:linear-gradient(135deg,var(--accent-light) 0,var(--fg-violet-400) 100%);-webkit-background-clip:text}.studio-subtitle{color:var(--text-subtle);font-size:14px;line-height:1.5;margin:0;max-width:520px}.studio-header-right{align-items:center;display:flex;flex-shrink:0;gap:18px}.studio-stat-strip{align-items:center;background:rgba(var(--glass-900),.7);border:1px solid rgba(var(--hairline),.1);border-radius:14px;display:flex;gap:16px;padding:8px 16px}.stat-strip-item{align-items:center;display:flex;flex-direction:column}.stat-strip-num{color:var(--text-main);font-size:18px;font-weight:900;line-height:1.1}.stat-strip-label{color:var(--text-subtle);font-size:10.5px;font-weight:700;letter-spacing:.05em;margin-top:2px;text-transform:uppercase}.stat-strip-divider{background:rgba(var(--hairline),.12);height:24px;width:1px}.btn-create-course-glow{align-items:center;background:linear-gradient(135deg,var(--accent-primary) 0,var(--accent-active) 100%);border:1px solid rgba(var(--hairline),.25);border-radius:12px;box-shadow:0 8px 22px #2563eb73;color:var(--fixed-50);cursor:pointer;display:inline-flex;font-size:13.5px;font-weight:750;gap:8px;padding:11px 20px;transition:all .25s ease;white-space:nowrap}.btn-create-course-glow:hover{background:linear-gradient(135deg,var(--accent-hover) 0,var(--accent-primary) 100%);box-shadow:0 12px 30px #2563eba6;transform:translateY(-2px)}.studio-error-banner{background:#ef444426;border:1px solid #ef444459;border-radius:12px;color:var(--fg-red-300);font-size:13.5px;margin-bottom:20px;padding:12px 18px}.studio-toolbar-row{align-items:center;display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between;margin-bottom:26px}.studio-search-bar{flex:1 1;min-width:280px;position:relative}.studio-search-bar .search-icon-svg{color:var(--text-subtle);left:14px;pointer-events:none;position:absolute;top:50%;transform:translateY(-50%)}.studio-search-bar input{background:var(--bg-card);border:1px solid var(--bg-card-header);border-radius:12px;box-sizing:border-box;color:var(--text-main);font-size:13.5px;padding:11px 16px 11px 40px;transition:all .2s ease;width:100%}.studio-search-bar input:focus{background:var(--surface-open);border-color:var(--accent-light);box-shadow:0 0 16px #2563eb59;outline:none}.studio-sort-bar{align-items:center;display:flex;gap:10px}.sort-label-text{color:var(--text-subtle);font-size:13px;font-weight:600}.studio-sort-select{background:var(--bg-card);border:1px solid var(--bg-card-header);border-radius:12px;color:var(--text-main);cursor:pointer;font-size:13px;font-weight:600;outline:none;padding:10px 14px;transition:border-color .2s ease}.studio-sort-select:focus{border-color:var(--accent-light)}.studio-bento-grid{grid-gap:24px;display:grid;gap:24px;grid-template-columns:repeat(auto-fill,minmax(350px,1fr))}.bento-course-card{background:var(--bg-card);border:1px solid var(--bg-card-header);border-radius:18px;box-shadow:0 12px 30px rgba(0,0,0,calc(var(--shadow-k)*.45));display:flex;flex-direction:column;overflow:hidden;position:relative;transition:all .28s cubic-bezier(.16,1,.3,1)}.bento-course-card:hover{border-color:#60a5fa66;box-shadow:0 18px 40px rgba(0,0,0,calc(var(--shadow-k)*.6)),0 0 25px #2563eb2e;transform:translateY(-5px)}.bento-card-cover{align-items:center;display:flex;height:80px;justify-content:space-between;padding:16px 20px;position:relative}.bento-cover-icon{align-items:center;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:rgba(var(--hairline),.18);border:1px solid rgba(var(--hairline),.3);border-radius:12px;display:flex;height:40px;justify-content:center;width:40px}.bento-status-pill{align-items:center;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#00000073;border:1px solid #ffffff40;border-radius:30px;color:#fff;display:inline-flex;font-size:11px;font-weight:750;gap:6px;padding:4px 10px}.pulse-dot{background:#34d399;border-radius:50%;box-shadow:0 0 8px #34d399;height:7px;width:7px}.bento-card-body{display:flex;flex:1 1;flex-direction:column;padding:22px 20px 18px}.bento-course-title{color:var(--text-main);font-size:18px;font-weight:800;letter-spacing:-.01em;line-height:1.35;margin:0 0 8px}.bento-course-description{color:var(--text-subtle);flex:1 1;font-size:13px;line-height:1.55;margin:0 0 16px}.bento-badges-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}.bento-badge-chip{align-items:center;background:rgba(var(--glass-800),.7);border:1px solid rgba(var(--hairline),.08);border-radius:30px;color:var(--text-muted);display:inline-flex;font-size:12px;font-weight:650;gap:6px;padding:5px 12px}.bento-action-footer{align-items:center;border-top:1px solid rgba(var(--hairline),.08);display:flex;gap:10px;padding-top:16px}.btn-enter-studio{align-items:center;background:linear-gradient(135deg,var(--accent-primary) 0,var(--accent-hover) 100%);border:1px solid rgba(var(--hairline),.2);border-radius:10px;box-shadow:0 4px 14px #2563eb66;color:var(--fixed-50);cursor:pointer;display:inline-flex;flex:1 1;font-size:13px;font-weight:750;gap:7px;justify-content:center;padding:10px 16px;transition:all .2s ease}.btn-enter-studio:hover{background:linear-gradient(135deg,var(--accent-hover) 0,var(--accent-primary) 100%);box-shadow:0 6px 18px #2563eb99;transform:translateY(-2px)}.btn-delete-icon{align-items:center;background:#ef44441a;border:1px solid #ef444440;border-radius:10px;color:var(--fg-red-400);cursor:pointer;display:flex;height:38px;justify-content:center;transition:all .2s ease;width:38px}.btn-delete-icon:hover{background:#ef444440;border-color:#ef4444;color:var(--text-main)}.studio-empty-card{align-items:center;background:var(--bg-card);border:1px dashed var(--border-dark);border-radius:18px;display:flex;flex-direction:column;grid-column:1/-1;justify-content:center;padding:50px 20px;text-align:center}.studio-empty-card h3{color:var(--text-main);font-size:18px;font-weight:800;margin:14px 0 6px}.studio-empty-card p{color:var(--text-subtle);font-size:13.5px;margin:0}.studio-spinner{animation:spin .8s linear infinite;border:3px solid #60a5fa33;border-radius:50%;border-top:3px solid var(--accent-light);height:34px;margin-bottom:12px;width:34px}.modal-glass-backdrop{align-items:center;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);background:#000000d1;box-sizing:border-box;display:flex;inset:0;justify-content:center;padding:20px;position:fixed;z-index:100000}.modal-glass-container{animation:modalPop .25s cubic-bezier(.16,1,.3,1);background:var(--bg-card);border:1px solid rgba(var(--hairline),.16);border-radius:20px;box-shadow:0 25px 60px rgba(0,0,0,calc(var(--shadow-k)*.85)),0 0 35px #2563eb40;box-sizing:border-box;display:flex;flex-direction:column;max-width:540px;overflow:hidden;width:100%}.modal-glass-header{align-items:center;border-bottom:1px solid rgba(var(--hairline),.1);display:flex;justify-content:space-between;padding:20px 24px}.modal-header-title-box{align-items:center;display:flex;gap:12px}.modal-title-icon{align-items:center;background:#2563eb2e;border:1px solid #60a5fa59;border-radius:10px;display:flex;height:38px;justify-content:center;width:38px}.modal-header-title-box h3{color:var(--text-main);font-size:17px;font-weight:800;margin:0 0 2px}.modal-header-title-box p{color:var(--text-subtle);font-size:12.5px;margin:0}.modal-close-icon-btn{align-items:center;background:#0000;border:none;border-radius:8px;color:var(--text-subtle);cursor:pointer;display:flex;justify-content:center;padding:6px;transition:all .2s ease}.modal-close-icon-btn:hover{background:var(--bg-card-header);color:var(--text-main)}.modal-glass-body{display:flex;flex-direction:column;gap:16px;max-height:65vh;overflow-y:auto;padding:22px 24px}.modal-input-field{display:flex;flex-direction:column;gap:6px}.modal-input-field label{color:var(--text-muted);font-size:13px;font-weight:700}.req-star{color:var(--fg-red-400)}.modal-input-field input,.modal-input-field textarea{background:var(--bg-card-header);border:1px solid var(--border-dark);border-radius:10px;box-sizing:border-box;color:var(--text-main);font-family:inherit;font-size:13.5px;outline:none;padding:10px 14px;transition:border-color .2s ease,box-shadow .2s ease;width:100%}.modal-input-field input:focus,.modal-input-field textarea:focus{border-color:var(--accent-light);box-shadow:0 0 14px #2563eb4d}.student-header-flex{align-items:center;display:flex;justify-content:space-between}.selected-count-badge{background:#2563eb33;border:1px solid #60a5fa66;border-radius:20px;color:var(--accent-light);font-size:11px;font-weight:800;padding:2px 8px}.modal-student-search-bar{margin-top:4px;position:relative}.modal-student-search-bar .search-icon-svg{color:var(--text-subtle);left:12px;pointer-events:none;position:absolute;top:50%;transform:translateY(-50%)}.modal-student-search-bar input{padding-left:36px}.modal-students-scroll-box{background:var(--bg-main);border:1px solid var(--bg-card-header);border-radius:12px;display:flex;flex-direction:column;gap:6px;margin-top:6px;max-height:180px;overflow-y:auto;padding:8px}.modal-student-item{align-items:center;background:var(--bg-card-header);border:1px solid #0000;border-radius:8px;cursor:pointer;display:flex;justify-content:space-between;padding:8px 12px;transition:all .15s ease}.modal-student-item:hover{background:var(--border-dark)}.modal-student-item.selected{background:#2563eb38;border-color:#60a5fa80}.student-item-left{align-items:center;display:flex;gap:10px}.student-avatar-letter{align-items:center;background:#60a5fa40;border-radius:50%;color:var(--accent-light);display:flex;font-size:12px;font-weight:800;height:28px;justify-content:center;width:28px}.student-text-group{display:flex;flex-direction:column}.student-name{color:var(--text-main);font-size:13px;font-weight:700}.student-email{color:var(--text-subtle);font-size:11px}.status-chip-selected{align-items:center;background:#10b98126;border:1px solid #34d39959;color:var(--fg-emerald-400);display:inline-flex;font-weight:750;gap:4px}.status-chip-add,.status-chip-selected{border-radius:20px;font-size:11px;padding:2px 8px}.status-chip-add{background:rgba(var(--hairline),.06);color:var(--text-subtle);font-weight:650}.no-students-txt{color:var(--text-subtle);font-size:12.5px;margin:0;padding:16px;text-align:center}.modal-glass-footer{background:rgba(var(--glass-900),.5);border-top:1px solid rgba(var(--hairline),.1);display:flex;gap:12px;justify-content:flex-end;padding:16px 24px}.btn-modal-cancel{background:#0000;border:1px solid var(--border-dark);border-radius:10px;color:var(--text-muted);cursor:pointer;font-size:13px;font-weight:650;padding:9px 18px;transition:all .2s ease}.btn-modal-cancel:hover{background:var(--bg-card-header);color:var(--text-main)}.btn-modal-submit{background:linear-gradient(135deg,var(--accent-primary) 0,var(--accent-active) 100%);border:1px solid rgba(var(--hairline),.2);border-radius:10px;box-shadow:0 4px 14px #2563eb66;color:var(--fixed-50);cursor:pointer;font-size:13px;font-weight:750;padding:9px 20px;transition:all .2s ease}.btn-modal-submit:hover:not(:disabled){background:linear-gradient(135deg,var(--accent-hover) 0,var(--accent-primary) 100%);box-shadow:0 6px 18px #2563eb99;transform:translateY(-2px)}.btn-modal-submit:disabled{cursor:not-allowed;opacity:.6}@media (max-width:900px){.studio-unified-header-card{align-items:flex-start;flex-direction:column}.studio-header-right{flex-wrap:wrap;justify-content:space-between;width:100%}.studio-bento-grid{grid-template-columns:1fr}}.class-link-hint{color:var(--text-subtle);font-size:12px;margin:0}.class-link-chips{display:flex;flex-wrap:wrap;gap:8px}.class-link-chip{align-items:center;background:var(--bg-card-header);border:1px solid var(--border-dark);border-radius:20px;color:var(--text-main);cursor:pointer;display:inline-flex;font-size:12.5px;font-weight:700;gap:5px;padding:6px 12px;transition:all .15s ease}.class-link-chip:hover{background:var(--border-dark)}.class-link-chip.selected{background:#10b98126;border-color:#34d39973;color:var(--fg-emerald-400)}.class-link-chip:focus-visible{outline:2px solid var(--fg-emerald-400);outline-offset:2px}.modal-student-item.from-class{cursor:default}.mq-page{background:var(--bg-main);color:var(--text-main);min-height:100vh}.mq-page,.mq-page *,.mq-page :after,.mq-page :before{box-sizing:border-box}.mq-inner{margin:0 auto;max-width:1200px;padding:95px 24px 70px}.mq-back{align-items:center;color:var(--text-muted);display:inline-flex;font-size:14px;gap:6px;margin-bottom:14px;text-decoration:none}.mq-back:hover{color:var(--accent-light)}.mq-header h1{font-size:28px;font-weight:800;letter-spacing:-.02em;margin:6px 0}.mq-header p{color:var(--text-muted);line-height:1.55;margin:0;max-width:720px}.mq-badge{align-items:center;background:var(--bg-eff6ff);border:1px solid var(--line-bfdbfe);border-radius:999px;color:var(--accent-light);display:inline-flex;font-size:12px;font-weight:700;gap:6px;padding:3px 10px}.mq-panel{background:var(--bg-card);border:1px solid var(--border);border-radius:14px;padding:18px 20px}.mq-panel h2{align-items:center;display:flex;font-size:17px;gap:8px;margin:0 0 14px}.mq-upload{margin:22px 0 18px}.mq-upload-fields{grid-gap:12px;display:grid;gap:12px;grid-template-columns:repeat(2,minmax(0,1fr))}.mq-drop{align-items:flex-start;background:var(--bg-main);border:1.5px dashed var(--border);border-radius:12px;color:var(--text-main);cursor:pointer;display:flex;flex-direction:column;font:inherit;gap:4px;min-height:78px;padding:16px;text-align:left}.mq-drop span{color:var(--text-muted);font-size:13.5px;word-break:break-word}.mq-drop:focus-visible,.mq-drop:hover{border-color:var(--accent-primary)}.mq-drop.has-file{border-color:var(--accent-primary);border-style:solid}.mq-drop.has-file span{color:var(--accent-light)}.mq-upload-actions{margin-top:14px}.mq-subject{display:flex;flex-direction:column;font-size:14px;font-weight:600;gap:6px;grid-column:1/-1;order:-1}.mq-subject>span{align-items:baseline;display:flex;flex-wrap:wrap;gap:4px 8px}.mq-subject select{max-width:420px}.mq-row{align-items:center;display:flex;flex-wrap:wrap;gap:8px}.mq-row-end{justify-content:flex-end}.mq-hint{font-size:12.5px;font-weight:400}.mq-hint,.mq-muted{color:var(--text-muted)}.mq-muted{font-size:14px;margin:0}.mq-label{color:var(--text-muted);display:block;font-size:12px;font-weight:700;letter-spacing:.04em;margin-bottom:6px;text-transform:uppercase}.mq-btn{align-items:center;background:var(--bg-card-header);border:1px solid var(--border);border-radius:9px;color:var(--text-main);cursor:pointer;display:inline-flex;font:inherit;font-size:14px;font-weight:600;gap:6px;justify-content:center;min-height:36px;padding:7px 14px;text-decoration:none}.mq-btn:hover:not(:disabled){border-color:var(--accent-primary)}.mq-btn:disabled{cursor:not-allowed;opacity:.5}.mq-btn-primary{background:var(--accent-primary);border-color:var(--accent-primary);color:#fff}.mq-btn-primary:hover:not(:disabled){background:var(--accent-hover)}.mq-btn-ghost{background:#0000}.mq-btn-danger{color:var(--fg-dc2626)}.mq-btn-danger:hover:not(:disabled){border-color:var(--fg-dc2626)}.mq-icon-btn{align-items:center;background:#0000;border:none;border-radius:8px;color:var(--text-muted);cursor:pointer;display:inline-flex;flex-shrink:0;height:32px;justify-content:center;width:32px}.mq-icon-btn:hover:not(:disabled){background:var(--bg-card-header);color:var(--text-main)}.mq-error{background:var(--bg-fef2f2);border:1px solid var(--line-fecaca);border-radius:9px;color:var(--fg-dc2626);font-size:14px;margin:10px 0 0;padding:9px 12px}.mq-notice{align-items:flex-start;background:var(--bg-eff6ff);border:1px solid var(--line-bfdbfe);border-radius:10px;display:flex;font-size:14px;gap:10px;justify-content:space-between;line-height:1.5;margin-bottom:18px;padding:11px 14px}.mq-spin{animation:mq-spin 1s linear infinite}@keyframes mq-spin{to{transform:rotate(1turn)}}@media (prefers-reduced-motion:reduce){.mq-spin{animation:none}}.mq-layout{grid-gap:20px;align-items:start;display:grid;gap:20px;grid-template-columns:270px minmax(0,1fr)}.mq-sidebar{position:-webkit-sticky;position:sticky;top:90px}.mq-sidebar h3{color:var(--text-muted);font-size:13px;letter-spacing:.04em;margin:18px 0 8px;text-transform:uppercase}.mq-nav{display:flex;flex-direction:column;gap:4px}.mq-import-btn,.mq-nav button{background:#0000;border:none;border-radius:8px;color:var(--text-main);cursor:pointer;font:inherit;text-align:left}.mq-nav button{font-weight:600;padding:8px 10px}.mq-imports li:hover,.mq-nav button:hover{background:var(--bg-card-header)}.mq-imports li.is-active,.mq-nav button.is-active{background:var(--bg-eff6ff);color:var(--accent-light)}.mq-imports{display:flex;flex-direction:column;gap:2px;list-style:none;margin:0;max-height:420px;overflow-y:auto;padding:0}.mq-imports li{align-items:center;border-radius:8px;display:flex}.mq-import-btn{display:flex;flex:1 1;flex-direction:column;gap:2px;min-width:0;padding:8px 10px}.mq-import-name{font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mq-import-status{align-items:center;color:var(--text-muted);display:inline-flex;flex-wrap:wrap;font-size:12.5px;gap:4px}.mq-text-bad{color:var(--fg-dc2626)}.mq-main{min-width:0}.mq-main-head{align-items:center;display:flex;gap:12px;justify-content:space-between;margin-bottom:12px}.mq-main-head h2{font-size:20px;margin:0;overflow-wrap:anywhere}.mq-check-all{cursor:pointer;display:inline-flex;font-size:14px;gap:6px;white-space:nowrap}.mq-check-all,.mq-state{align-items:center;color:var(--text-muted)}.mq-state{display:flex;gap:12px;margin-bottom:14px}.mq-state p{margin:0}.mq-state-bad{border-color:var(--line-fecaca);color:var(--fg-dc2626)}.mq-notes{border:1px solid var(--border);border-radius:10px;color:var(--text-muted);font-size:14px;margin:0 0 14px;padding:10px 14px 10px 30px}.mq-bulk,.mq-notes{background:var(--bg-card)}.mq-bulk{align-items:center;border:1px solid var(--accent-primary);border-radius:12px;box-shadow:0 8px 22px rgba(0,0,0,calc(var(--shadow-k)*.35));display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px;padding:10px 12px;position:-webkit-sticky;position:sticky;top:74px;z-index:5}.mq-bulk>span{font-weight:700;margin-right:4px}.mq-list{display:flex;flex-direction:column;gap:14px}.mq-load-more{display:flex;margin:16px auto 0}.mq-card{background:var(--bg-card);border:1px solid var(--border);border-radius:14px;padding:16px 18px}.mq-card.is-selected{border-color:var(--accent-primary)}.mq-card-head{align-items:flex-start;display:flex;gap:10px}.mq-check{cursor:pointer;padding-top:2px}.mq-check input,.mq-check-all input,.mq-class-option input{accent-color:var(--accent-primary);height:17px;width:17px}.mq-card-title{display:flex;flex:1 1;flex-direction:column;gap:2px;min-width:0}.mq-meta{color:var(--text-muted);font-size:13px}.mq-chips{display:flex;flex-wrap:wrap;gap:6px;margin:10px 0 0}.mq-chip{align-items:center;background:var(--bg-card-header);border:1px solid var(--border);border-radius:999px;color:var(--text-muted);display:inline-flex;font-size:12px;font-weight:600;gap:4px;padding:3px 9px;white-space:nowrap}.mq-chip-link{color:var(--accent-light);text-decoration:none}.mq-chip-link:hover{border-color:var(--accent-primary)}.mq-chip-draft{background:var(--bg-fef3c7);border-color:var(--line-fde68a);color:var(--fg-b45309)}.mq-chip-approved,.mq-chip-good{background:var(--bg-dcfce7);border-color:var(--line-bbf7d0);color:var(--fg-15803d)}.mq-chip-warn{border-color:var(--line-fde68a);white-space:normal}.mq-chip-warn,.mq-warnings{background:var(--bg-fef3c7);color:var(--fg-b45309)}.mq-warnings{border:1px solid var(--line-fde68a);border-radius:10px;display:flex;flex-direction:column;font-size:13.5px;gap:4px;list-style:none;margin:10px 0 0;padding:10px 12px}.mq-warnings li{align-items:flex-start;display:flex;gap:6px}.mq-warnings svg{flex-shrink:0;margin-top:2px}.mq-diagram-needed{border:1px dashed var(--fg-b45309);border-radius:10px;font-size:14px;margin-top:10px;padding:12px}.mq-diagram-needed p{line-height:1.5;margin:0 0 10px}.mq-diagram-needed svg{vertical-align:-2px}.mq-question{border-radius:10px;line-height:1.6;margin-top:14px;overflow-x:auto;padding:14px 16px}.mq-picture{margin-top:12px}.mq-picture img{background:#fff;border:1px solid var(--border);border-radius:8px;display:block;margin-bottom:8px;max-height:360px;max-width:100%}.mq-answer{margin-top:14px}.mq-answer-text{background:var(--bg-main);border:1px solid var(--border);border-radius:8px;display:block;font-size:14px;margin-bottom:6px;overflow-wrap:anywhere;padding:8px 10px;white-space:pre-wrap}.mq-missing{color:var(--fg-dc2626);font-size:14px}.mq-options{display:flex;flex-wrap:wrap;gap:6px}.mq-option{align-items:center;border:1px solid var(--border);border-radius:8px;display:inline-flex;font-size:14px;gap:4px;padding:5px 10px}.mq-option p{display:inline;margin:0}.mq-option.is-correct{border-color:var(--fg-15803d);color:var(--fg-15803d)}.mq-explanation{font-size:14px;margin-top:12px}.mq-explanation summary{color:var(--accent-light);cursor:pointer;font-weight:600}.mq-explanation>div{border-radius:10px;margin-top:8px;overflow-x:auto;padding:12px 14px}.mq-todo{color:var(--fg-b45309);font-size:13.5px;margin:12px 0 0}.mq-card-actions{border-top:1px solid var(--border);flex-wrap:wrap;gap:8px;padding-top:12px}.mq-card-actions,.mq-edit{display:flex;margin-top:14px}.mq-edit{flex-direction:column;gap:12px}.mq-edit label,.mq-modal-body label{display:flex;flex-direction:column;font-size:13.5px;font-weight:600;gap:5px}.mq-edit-grid{grid-gap:12px;display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}.mq-page input:not([type=checkbox]),.mq-page select,.mq-page textarea{background:var(--bg-main);border:1px solid var(--border);border-radius:8px;color:var(--text-main);font:inherit;font-size:14px;font-weight:400;padding:8px 10px;width:100%}.mq-page textarea{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:13px;line-height:1.5;resize:vertical}.mq-page input:focus,.mq-page select:focus,.mq-page textarea:focus{border-color:var(--accent-primary);outline:2px solid var(--accent-primary);outline-offset:0}.mq-preview>div{border:1px dashed var(--border);border-radius:10px;overflow-x:auto;padding:12px 14px}.mq-modal-backdrop{align-items:center;background:#080c1499;display:flex;inset:0;justify-content:center;padding:16px;position:fixed;z-index:1000}.mq-modal{background:var(--bg-card);border:1px solid var(--border);border-radius:16px;box-shadow:0 24px 60px #0006;color:var(--text-main);max-height:calc(100vh - 32px);max-width:560px;overflow-y:auto;width:100%}.mq-modal-head{align-items:center;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;padding:16px 20px}.mq-modal-head h3{font-size:18px;margin:0}.mq-modal-body{display:flex;flex-direction:column;gap:14px;padding:18px 20px 20px}.mq-classes{border:1px solid var(--border);border-radius:10px;display:flex;flex-wrap:wrap;gap:8px 16px;margin:0;max-height:180px;overflow-y:auto;padding:10px 12px}.mq-classes legend{font-size:13.5px;font-weight:600;padding:0 4px}.mq-modal-body .mq-class-option{align-items:center;cursor:pointer;flex-direction:row;font-weight:500;gap:6px}.mq-created{align-items:center;text-align:center}.mq-created svg{color:var(--fg-15803d)}.mq-created p{margin:0}@media (max-width:900px){.mq-layout{grid-template-columns:minmax(0,1fr)}.mq-sidebar{position:static}.mq-imports{max-height:220px}}@media (max-width:600px){.mq-inner{padding:80px 16px 90px}.mq-header h1{font-size:24px}.mq-upload-fields{grid-template-columns:minmax(0,1fr)}.mq-card,.mq-panel{padding:14px}.mq-bulk{top:64px}.mq-bulk .mq-btn,.mq-card-actions .mq-btn{flex:1 1 auto}}.mq-chip-published{background:var(--bg-eff6ff);border-color:var(--line-bfdbfe);color:var(--accent-light);white-space:normal}.mq-modal-wide{max-width:720px}.mq-modal-head h3{align-items:center;display:flex;gap:8px}.mq-sections{grid-gap:10px;border:none;display:grid;gap:10px;grid-template-columns:repeat(3,minmax(0,1fr));margin:0;padding:0}.mq-sections legend{font-size:13.5px;font-weight:600;margin-bottom:8px;padding:0}.mq-modal-body .mq-section-option{align-items:flex-start;background:var(--bg-main);border:1.5px solid var(--border);border-radius:12px;cursor:pointer;display:flex;flex-direction:column;gap:4px;padding:12px;position:relative}.mq-section-option input{opacity:0;pointer-events:none;position:absolute}.mq-section-option svg{color:var(--accent-light)}.mq-section-option strong{font-size:14.5px}.mq-section-option span{color:var(--text-muted);font-size:12.5px;font-weight:400;line-height:1.4}.mq-section-option.is-active,.mq-section-option:hover{border-color:var(--accent-primary)}.mq-section-option.is-active{background:var(--bg-eff6ff)}.mq-section-option:has(input:focus-visible){outline:2px solid var(--accent-primary);outline-offset:2px}.mq-topic-list{display:flex;flex-direction:column;gap:8px;max-height:340px;overflow-y:auto;padding-right:4px}.mq-modal-body .mq-topic-row{grid-gap:10px;align-items:center;display:grid;font-weight:400;gap:10px;grid-template-columns:minmax(0,1fr) minmax(0,260px)}.mq-topic-q{font-size:13.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mq-done-links{display:flex;flex-direction:column;gap:6px;list-style:none;margin:0;padding:0}.mq-done-links a{color:var(--accent-light);font-weight:600}@media (max-width:600px){.mq-modal-body .mq-topic-row,.mq-sections{grid-template-columns:minmax(0,1fr)}.mq-modal-body .mq-topic-row{gap:4px}.mq-topic-q{white-space:normal}}body,html{background-color:var(--bg-main)!important;margin:0;overflow-x:hidden!important;padding:0}.curriculum-page-wrapper{background-color:var(--bg-main);box-sizing:border-box;color:var(--text-main);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;max-width:100vw;min-height:100vh;overflow-x:hidden}.curriculum-inner-container{box-sizing:border-box;margin:0 auto;max-width:1380px;padding:95px 20px 70px}.curriculum-header-card{align-items:center;background:radial-gradient(circle at 85% 30%,#2563eb38 0,#182337f2 70%),var(--bg-card);border:1px solid rgba(var(--hairline),.12);border-radius:20px;box-shadow:0 16px 36px rgba(0,0,0,calc(var(--shadow-k)*.5)),0 0 25px #2563eb1a;box-sizing:border-box;display:flex;flex-wrap:wrap;gap:20px;justify-content:space-between;margin-bottom:24px;padding:24px 30px}.curriculum-header-left{display:flex;flex-direction:column;gap:8px;min-width:0}.btn-back-courses{align-items:center;background:rgba(var(--hairline),.08);border:1px solid rgba(var(--hairline),.15);border-radius:30px;color:var(--text-muted);cursor:pointer;display:inline-flex;font-size:12px;font-weight:700;gap:6px;padding:6px 14px;transition:all .2s ease;width:-webkit-fit-content;width:-moz-fit-content;width:fit-content}.btn-back-courses:hover{background:rgba(var(--hairline),.18);color:var(--text-main)}.curriculum-course-title{align-items:center;color:var(--text-main);display:flex;font-size:26px;font-weight:850;gap:10px;letter-spacing:-.02em;margin:0;word-break:break-word}.curriculum-course-desc{color:var(--text-subtle);font-size:13.5px;line-height:1.5;margin:0}.btn-enrolled-students-pill{align-items:center;background:#2563eb26;border:1px solid #60a5fa59;border-radius:12px;color:var(--fg-blue-300);cursor:pointer;display:inline-flex;font-size:13px;font-weight:750;gap:8px;padding:9px 18px;transition:all .2s ease;white-space:nowrap}.btn-enrolled-students-pill:hover{background:#2563eb47;border-color:var(--accent-light);box-shadow:0 4px 14px #2563eb66;color:var(--text-main);transform:translateY(-2px)}.curriculum-workspace-layout{grid-gap:20px;align-items:start;box-sizing:border-box;display:grid;gap:20px;grid-template-columns:310px minmax(0,1fr);width:100%}.curriculum-left-sidebar{background:var(--bg-card);border:1px solid var(--bg-card-header);border-radius:18px;box-shadow:0 12px 30px rgba(0,0,0,calc(var(--shadow-k)*.45));box-sizing:border-box;display:flex;flex-direction:column;min-width:0;padding:18px}.sidebar-title-row{align-items:center;display:flex;justify-content:space-between;margin-bottom:16px}.sidebar-title-row h3{color:var(--text-main);font-size:15px;font-weight:800;margin:0}.btn-add-session-glow{align-items:center;background:linear-gradient(135deg,var(--accent-primary) 0,var(--accent-active) 100%);border:1px solid rgba(var(--hairline),.2);border-radius:10px;color:#fff;cursor:pointer;display:inline-flex;font-size:12px;font-weight:750;gap:5px;padding:6px 12px;transition:all .2s ease}.btn-add-session-glow:hover{background:linear-gradient(135deg,var(--accent-hover) 0,var(--accent-primary) 100%);box-shadow:0 4px 14px #2563eb80;transform:translateY(-2px)}.timeline-list{display:flex;flex-direction:column;gap:10px;max-height:75vh;overflow-y:auto}.timeline-item-card{align-items:flex-start;background:var(--bg-card-header);border:1px solid var(--border-dark);border-radius:14px;cursor:pointer;display:flex;gap:10px;min-width:0;padding:12px 14px;transition:all .2s ease}.timeline-item-card:hover{background:var(--bg-card-header);border-color:#475569;transform:translateX(3px)}.timeline-item-card.active-session{background:#2563eb29;border-color:var(--accent-light);box-shadow:0 0 16px #2563eb33}.timeline-node-circle{align-items:center;background:var(--bg-card);border:1px solid #475569;border-radius:50%;color:var(--text-subtle);display:flex;flex-shrink:0;font-size:12px;font-weight:800;height:26px;justify-content:center;width:26px}.timeline-item-card.active-session .timeline-node-circle{background:linear-gradient(135deg,var(--accent-primary),var(--accent-hover));border-color:#93c5fd;box-shadow:0 0 10px #2563eb99;color:#fff}.timeline-session-title{color:var(--text-main);font-size:13.5px;font-weight:750;line-height:1.35;margin:0 0 4px;word-break:break-word}.timeline-badges-strip{display:flex;flex-wrap:wrap;gap:5px}.timeline-mini-badge{background:rgba(var(--hairline),.08);border:1px solid rgba(var(--hairline),.1);border-radius:10px;color:var(--text-muted);font-size:10px;font-weight:700;padding:2px 7px}.timeline-mini-badge.hw{background:#2563eb33;border-color:#60a5fa59;color:var(--fg-blue-300)}.timeline-mini-badge.cw{background:#a855f733;border-color:#c084fc59;color:var(--fg-purple-400)}.timeline-mini-badge.pdf{background:#10b98133;border-color:#34d39959;color:var(--fg-emerald-300)}.curriculum-right-workspace{background:var(--bg-card);border:1px solid var(--bg-card-header);border-radius:18px;box-shadow:0 12px 30px rgba(0,0,0,calc(var(--shadow-k)*.45));box-sizing:border-box;min-height:600px;min-width:0;padding:22px}.workspace-header{align-items:center;border-bottom:1px solid rgba(var(--hairline),.08);display:flex;flex-wrap:wrap;gap:14px;justify-content:space-between;margin-bottom:20px;padding-bottom:16px}.workspace-header-info h3{color:var(--text-main);font-size:17px;font-weight:850;margin:0 0 4px}.meta-tag{color:var(--text-subtle);font-size:12.5px}.meta-tag strong{color:var(--accent-light)}.workspace-action-buttons{align-items:center;display:flex;gap:8px}.btn-danger-glass{align-items:center;background:#ef44441a;border:1px solid #ef44444d;border-radius:10px;color:var(--fg-red-400);cursor:pointer;display:inline-flex;font-size:12.5px;font-weight:700;gap:6px;padding:8px 14px;transition:all .2s ease}.btn-danger-glass:hover{background:#ef444438;border-color:#ef4444}.btn-save-session-glow{align-items:center;background:linear-gradient(135deg,#10b981,#059669);border:1px solid rgba(var(--hairline),.2);border-radius:10px;box-shadow:0 4px 14px #10b98166;color:#fff;cursor:pointer;display:inline-flex;font-size:13px;font-weight:750;gap:6px;padding:8px 18px;transition:all .2s ease}.btn-save-session-glow:hover{box-shadow:0 6px 18px #10b98199;transform:translateY(-2px)}.workspace-tabs-nav{border-bottom:1px solid rgba(var(--hairline),.08);display:flex;gap:6px;margin-bottom:22px;max-width:100%;overflow-x:auto;padding-bottom:10px}.workspace-tab-btn{align-items:center;background:#0000;border:1px solid #0000;border-radius:10px;color:var(--text-subtle);cursor:pointer;display:inline-flex;font-size:12.5px;font-weight:700;gap:6px;padding:8px 13px;transition:all .2s ease;white-space:nowrap}.workspace-tab-btn:hover{background:var(--bg-card-header);color:var(--text-main)}.workspace-tab-btn.active-tab{background:#2563eb2e;border-color:#60a5fa66;box-shadow:0 0 12px #2563eb40;color:var(--accent-light)}.detail-form-grid{grid-gap:16px;box-sizing:border-box;display:grid;gap:16px;grid-template-columns:repeat(2,1fr);width:100%}.detail-form-grid .form-group.full-width{grid-column:1/-1}.form-group,.form-group-premium{display:flex;flex-direction:column;gap:6px;margin-bottom:8px;min-width:0}.form-group label,.form-group-premium label{align-items:center;color:var(--text-muted);display:flex;font-size:12.5px;font-weight:750;gap:6px}.form-group input,.form-group select,.form-group textarea,.form-group-premium input,.form-group-premium select,.form-group-premium textarea{background:var(--bg-card-header);border:1px solid var(--border-dark);border-radius:10px;box-sizing:border-box;color:var(--text-main);font-family:inherit;font-size:13.5px;outline:none;padding:10px 14px;transition:border-color .2s ease,box-shadow .2s ease;width:100%}.form-group input:focus,.form-group select:focus,.form-group textarea:focus,.form-group-premium input:focus,.form-group-premium select:focus,.form-group-premium textarea:focus{background:var(--bg-section);border-color:var(--accent-light);box-shadow:0 0 14px #2563eb59}.hw-creator-overlay{--hwc-surface:var(--bg-card,#223149);--hwc-surface-2:var(--bg-section,#131c2d);--hwc-surface-3:var(--bg-main,#182337);--hwc-border:var(--border-dark,#394e72);--hwc-text:var(--text-main,#f8fafc);--hwc-text-muted:var(--text-subtle,#9fb1cb);--hwc-text-dim:var(--text-dim,#71839e);--hwc-accent:var(--accent-primary,#2563eb);--hwc-accent-text:var(--accent-light,#60a5fa);--hwc-accent-soft:#2563eb24;--hwc-accent-ring:#2563eb59;--hwc-success:#10b981;--hwc-success-soft:#10b98124;--hwc-danger:#ef4444;--hwc-danger-soft:#ef44441f;--hwc-guided:#a855f7;--hwc-guided-soft:#a855f724;--hwc-skeleton:#94a3b824;--hwc-skeleton-shine:#94a3b842;align-items:center;animation:fadeIn .2s ease-out;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);background:#020617b8;box-sizing:border-box;display:flex;inset:0;justify-content:center;padding:20px;position:fixed;z-index:1000000}:root[data-theme=light] .hw-creator-overlay{--hwc-accent-text:#1d4ed8;--hwc-accent-soft:#2563eb14;--hwc-skeleton:#64748b1f;--hwc-skeleton-shine:#64748b33;background:#0f172a73}.hw-creator-drawer{animation:modalPop .25s cubic-bezier(.16,1,.3,1);background:var(--hwc-surface);border:1px solid var(--hwc-border);border-radius:20px;box-shadow:0 25px 60px rgba(0,0,0,calc(var(--shadow-k)*.45));box-sizing:border-box;color:var(--hwc-text);display:flex;flex-direction:column;max-height:calc(100vh - 40px);max-width:680px;overflow:hidden;transition:max-width .25s ease;width:100%}.hw-creator-drawer.is-wide{max-width:820px}.hw-creator-drawer *,.hw-creator-drawer :after,.hw-creator-drawer :before{box-sizing:border-box}.hw-creator-header{align-items:center;display:flex;flex-shrink:0;justify-content:space-between;padding:18px 24px 12px}.hw-creator-header h3{color:var(--hwc-text);font-size:18px;font-weight:800;margin:0 0 2px}.hw-creator-header p{color:var(--hwc-text-muted);font-size:12.5px;margin:0}.hw-creator-body{-webkit-overflow-scrolling:touch;flex:1 1;min-height:300px;overflow-y:auto;padding:18px 24px 22px}.hw-creator-footer{align-items:center;background:var(--hwc-surface-2);border-top:1px solid var(--hwc-border);display:flex;flex-shrink:0;gap:12px;justify-content:space-between;padding:14px 24px}.hwc-stepper{border-bottom:1px solid var(--hwc-border);display:flex;flex-shrink:0;gap:6px;list-style:none;margin:0;padding:4px 24px 14px}.hwc-step{flex:1 1;min-width:0;position:relative}.hwc-step:not(:last-child):after{background:var(--hwc-border);border-radius:2px;content:"";height:2px;left:34px;position:absolute;right:4px;top:14px}.hwc-step.is-done:not(:last-child):after{background:var(--hwc-accent)}.hwc-step button{align-items:flex-start;background:none;border:none;color:inherit;cursor:default;display:flex;flex-direction:column;font:inherit;gap:6px;padding:0;text-align:left;width:100%}.hwc-step button:not(:disabled){cursor:pointer}.hwc-step-dot{align-items:center;background:var(--hwc-surface-2);border:2px solid var(--hwc-border);border-radius:50%;color:var(--hwc-text-muted);display:inline-flex;font-size:12px;font-weight:800;height:28px;justify-content:center;position:relative;transition:all .2s ease;width:28px;z-index:1}.hwc-step.is-current .hwc-step-dot{border-color:var(--hwc-accent);box-shadow:0 0 0 4px var(--hwc-accent-soft);color:var(--hwc-accent-text)}.hwc-step.is-done .hwc-step-dot{background:var(--hwc-accent);border-color:var(--hwc-accent);color:#fff}.hwc-step button:not(:disabled):hover .hwc-step-dot{box-shadow:0 0 0 4px var(--hwc-accent-soft)}.hwc-step-text{display:flex;flex-direction:column;max-width:100%;min-width:0}.hwc-step-label{color:var(--hwc-text-muted);font-size:12px;font-weight:700}.hwc-step.is-current .hwc-step-label{color:var(--hwc-text)}.hwc-step-value{color:var(--hwc-text-dim);font-size:11px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.hwc-step-head{align-items:center;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;margin-bottom:14px}.hwc-step-head h4{color:var(--hwc-text);font-size:15px;font-weight:750;margin:0}.hwc-step-head h4 strong{color:var(--hwc-accent-text)}.hwc-search{align-items:center;color:var(--hwc-text-muted);display:flex;max-width:100%;position:relative;width:220px}.hwc-search svg{left:11px;pointer-events:none;position:absolute}.hwc-search input{background:var(--hwc-surface-3);border:1px solid var(--hwc-border);border-radius:10px;color:var(--hwc-text);font-size:13px;outline:none;padding:8px 30px 8px 34px;transition:border-color .15s ease,box-shadow .15s ease;width:100%}.hwc-input:focus,.hwc-search input:focus{border-color:var(--hwc-accent);box-shadow:0 0 0 3px var(--hwc-accent-soft)}.hwc-search button{background:none;border:none;color:var(--hwc-text-muted);cursor:pointer;font-size:12px;padding:4px 6px;position:absolute;right:6px}.hwc-search.is-inline{flex:1 1;min-width:180px;width:auto}.hwc-section-label{color:var(--hwc-accent-text);font-size:11.5px;font-weight:750;letter-spacing:.04em;margin-bottom:8px;text-transform:uppercase}.hwc-recent{border-bottom:1px dashed var(--hwc-border);margin-bottom:20px;padding-bottom:16px}.hwc-recent-list{display:flex;gap:8px;overflow-x:auto;padding-bottom:2px}.hwc-recent-chip{align-items:flex-start;background:var(--hwc-accent-soft);border:1px solid var(--hwc-accent-ring);border-radius:10px;cursor:pointer;display:flex;flex:0 0 auto;flex-direction:column;gap:2px;max-width:220px;padding:8px 12px;text-align:left;transition:transform .15s ease,border-color .15s ease}.hwc-recent-chip:hover{border-color:var(--hwc-accent);transform:translateY(-1px)}.hwc-recent-name,.hwc-recent-path{max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.hwc-recent-name{color:var(--hwc-text);font-size:13px;font-weight:700}.hwc-recent-path{color:var(--hwc-text-muted);font-size:11px}.hwc-grid{grid-gap:10px;display:grid;gap:10px;grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}.hwc-grid.is-tight{gap:8px;grid-template-columns:repeat(auto-fill,minmax(190px,1fr))}.hwc-card{align-items:center;background:var(--hwc-surface-3);border:1px solid var(--hwc-border);border-radius:14px;color:var(--hwc-text);cursor:pointer;display:flex;font:inherit;gap:10px;justify-content:space-between;padding:16px;text-align:left;transition:border-color .15s ease,transform .15s ease,box-shadow .15s ease;width:100%}.hwc-card:focus-visible,.hwc-card:hover{border-color:var(--hwc-accent);box-shadow:0 6px 16px var(--hwc-accent-soft);outline:none;transform:translateY(-2px)}.hwc-card.is-small{border-radius:10px;padding:11px 14px}.hwc-card-text{display:flex;flex-direction:column;gap:3px;min-width:0}.hwc-card-title{color:var(--hwc-text);font-size:14px;font-weight:700}.hwc-card.is-small .hwc-card-title{font-size:13px;font-weight:650}.hwc-card-meta{color:var(--hwc-text-muted);font-size:12px}.hwc-card-arrow{align-items:center;background:var(--hwc-accent-soft);border-radius:50%;color:var(--hwc-accent-text);display:inline-flex;flex-shrink:0;font-size:18px;height:26px;justify-content:center;line-height:1;transition:transform .15s ease;width:26px}.hwc-card:hover .hwc-card-arrow{transform:translateX(2px)}.hwc-units{display:flex;flex-direction:column;gap:16px}.hwc-skeleton{animation:hwcShimmer 1.3s ease-in-out infinite;background:linear-gradient(90deg,var(--hwc-skeleton) 25%,var(--hwc-skeleton-shine) 50%,var(--hwc-skeleton) 75%);background-size:200% 100%;border-radius:12px}@keyframes hwcShimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.hwc-empty{background:var(--hwc-surface-2);border:1px dashed var(--hwc-border);border-radius:14px;padding:36px 20px;text-align:center}.hwc-empty-icon{font-size:30px;margin-bottom:8px}.hwc-empty h5{color:var(--hwc-text);font-size:15px;font-weight:750;margin:0 0 4px}.hwc-empty p{color:var(--hwc-text-muted);font-size:13px;margin:0 0 12px}.hwc-link-btn{background:none;border:none;color:var(--hwc-accent-text);cursor:pointer;font:inherit;font-size:12.5px;font-weight:700;padding:4px 2px;white-space:nowrap}.hwc-link-btn:hover{text-decoration:underline}.hwc-muted{color:var(--hwc-text-muted);font-size:12px}.hwc-details{display:flex;flex-direction:column;gap:16px}.hwc-panel{background:var(--hwc-surface-2);border:1px solid var(--hwc-border);border-radius:14px;padding:16px}.hwc-panel-head{align-items:flex-start;display:flex;gap:12px;justify-content:space-between;margin-bottom:14px}.hwc-panel-head h4{color:var(--hwc-text);font-size:15px;font-weight:750;margin:0}.hwc-panel-head p{color:var(--hwc-text-muted);font-size:12.5px;margin:2px 0 0}.hwc-toolbar{align-items:center;display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}.hwc-chip-btn{background:var(--hwc-surface-3);border:1px solid var(--hwc-border);border-radius:10px;color:var(--hwc-text);cursor:pointer;font-size:12.5px;font-weight:650;padding:8px 12px;transition:border-color .15s ease;white-space:nowrap}.hwc-chip-btn:hover{border-color:var(--hwc-accent)}.hwc-question-list{display:flex;flex-direction:column;gap:8px;max-height:420px;overflow-y:auto;padding-right:4px}.hwc-question{background:var(--hwc-surface-3);border:1px solid var(--hwc-border);border-radius:10px;cursor:pointer;outline:none;padding:11px 14px 11px 16px;position:relative;transition:border-color .15s ease,background .15s ease}.hwc-question:before{background:#0000;border-radius:0 4px 4px 0;bottom:8px;content:"";left:0;position:absolute;top:8px;transition:background .15s ease;width:4px}.hwc-question:focus-visible,.hwc-question:hover{border-color:var(--hwc-accent-ring)}.hwc-question.is-selected{background:var(--hwc-accent-soft);border-color:var(--hwc-accent-ring)}.hwc-question.is-selected:before{background:var(--hwc-accent)}.hwc-question-head{align-items:center;display:flex;gap:8px;margin-bottom:6px}.hwc-check{align-items:center;border:2px solid var(--hwc-border);border-radius:5px;color:#fff;display:inline-flex;flex-shrink:0;height:18px;justify-content:center;transition:all .15s ease;width:18px}.hwc-question.is-selected .hwc-check{background:var(--hwc-accent);border-color:var(--hwc-accent)}.hwc-qnum{color:var(--hwc-accent-text);font-size:12px;font-weight:800}.hwc-tag{background:var(--hwc-surface-2);border:1px solid var(--hwc-border);border-radius:5px;color:var(--hwc-text-muted);font-size:11px;font-weight:600;padding:1px 7px}.hwc-preview-btn{font-size:12px;margin-left:auto}.hwc-question-text{color:var(--hwc-text);font-size:13.5px;line-height:1.6;overflow-wrap:anywhere;word-break:break-word}.hwc-question:not(.is-selected) .hwc-question-text{color:var(--hwc-text-muted)}.hwc-question-text.is-clamped{-webkit-line-clamp:2;-webkit-box-orient:vertical;display:-webkit-box;overflow:hidden}.hwc-question-text.is-clamped img{display:none}.hwc-question-img{border:1px solid var(--hwc-border);border-radius:8px;display:block;margin:10px auto 0;max-height:220px;max-width:100%}.hwc-choices{grid-gap:6px;border-top:1px solid var(--hwc-border);display:grid;gap:6px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));margin-top:10px;padding-top:8px}.hwc-choice{align-items:flex-start;background:var(--hwc-surface-2);border:1px solid var(--hwc-border);border-radius:6px;color:var(--hwc-text);display:flex;font-size:12px;gap:8px;padding:6px 10px;word-break:break-word}.hwc-choice-letter{color:var(--hwc-accent-text);font-weight:800;min-width:14px}.hwc-field{margin-bottom:14px}.hwc-field:last-child{margin-bottom:0}.hwc-field>label{color:var(--hwc-text);display:block;font-size:13px;font-weight:700;margin-bottom:7px}.hwc-required{color:var(--hwc-danger)}.hwc-input{background:var(--hwc-surface-3);border:1px solid var(--hwc-border);border-radius:10px;color:var(--hwc-text);font-size:14px;outline:none;padding:10px 14px;transition:border-color .15s ease,box-shadow .15s ease;width:100%}.hwc-segments{display:flex;flex-wrap:wrap;gap:6px}.hwc-segment{background:var(--hwc-surface-3);border:1px solid var(--hwc-border);border-radius:10px;color:var(--hwc-text);cursor:pointer;font-size:13px;font-weight:650;min-height:38px;padding:8px 14px;transition:all .15s ease}.hwc-segment:hover{border-color:var(--hwc-accent-ring)}.hwc-segment-input.is-active,.hwc-segment.is-active{background:var(--hwc-accent-soft);border-color:var(--hwc-accent);color:var(--hwc-accent-text)}.hwc-segment-input{font-size:13px;min-height:38px;padding:8px 10px;width:96px}.hwc-mode-grid{grid-gap:10px;display:grid;gap:10px;grid-template-columns:1fr 1fr}.hwc-mode{background:var(--hwc-surface-3);border:1.5px solid var(--hwc-border);border-radius:12px;cursor:pointer;display:flex;flex-direction:column;font:inherit;gap:4px;padding:12px 14px;text-align:left;transition:all .15s ease}.hwc-mode.is-active{background:var(--hwc-accent-soft);border-color:var(--hwc-accent)}.hwc-mode.is-guided.is-active{background:var(--hwc-guided-soft);border-color:var(--hwc-guided)}.hwc-mode-title{color:var(--hwc-text);font-size:13px;font-weight:700}.hwc-field-hint,.hwc-mode-desc{color:var(--hwc-text-muted);font-size:11.5px}.hwc-field-hint{margin:6px 0 0}.hwc-summary{background:var(--hwc-success-soft);border:1px solid #10b98159;border-radius:14px;padding:14px 16px}.hwc-summary-title{color:var(--hwc-text);font-size:14.5px;font-weight:750;margin-bottom:6px;word-break:break-word}.hwc-summary-stats{color:var(--hwc-text-muted);display:flex;flex-wrap:wrap;font-size:12.5px;gap:4px 0}.hwc-summary-stats span:not(:last-child):after{color:var(--hwc-text-dim);content:"·";margin:0 8px}.hwc-summary-stats strong{color:var(--hwc-text)}.hwc-error{background:var(--hwc-danger-soft);border:1px solid #ef444459;border-radius:10px;color:var(--hwc-danger);font-size:13px;font-weight:600;padding:10px 14px}.hwc-footer-info{color:var(--hwc-text-muted);font-size:13px;min-width:0}.hwc-footer-info strong{color:var(--hwc-text)}.hwc-footer-warn{color:var(--hwc-danger);font-weight:650}.hwc-footer-actions{display:flex;gap:10px;margin-left:auto}.hw-creator-footer .btn-primary-premium{color:#fff;min-width:160px}.hwc-selection{align-items:center;background:var(--hwc-accent-soft);border:1px solid var(--hwc-accent-ring);border-radius:14px;display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;padding:14px 16px}.hwc-selection-main{flex:1 1;min-width:0}.hwc-selection-count{color:var(--hwc-text);font-size:14px}.hwc-selection-sources{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.hwc-source-chip{background:var(--hwc-surface);border:1px solid var(--hwc-border);border-radius:999px;color:var(--hwc-text-muted);font-size:11.5px;max-width:100%;overflow:hidden;padding:3px 9px;text-overflow:ellipsis;white-space:nowrap}.hwc-source-chip strong{color:var(--hwc-accent-text);margin-left:2px}.hwc-selection-actions{display:flex;flex-wrap:wrap;gap:8px}.hwc-chip-btn.is-primary{background:var(--hwc-accent);border-color:var(--hwc-accent);color:#fff}.hwc-chip-btn:disabled{cursor:not-allowed;opacity:.5}.hwc-review-list{display:flex;flex-direction:column;gap:10px}.hwc-review-item{background:var(--hwc-surface-3);border:1px solid var(--hwc-border);border-radius:12px;padding:12px 14px}.hwc-review-item .hwc-question-head{margin-bottom:8px}.hwc-review-source{color:var(--hwc-text-dim);font-size:11.5px;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.hwc-review-actions{display:inline-flex;flex-shrink:0;gap:4px;margin-left:auto}.hwc-review-actions button{background:var(--hwc-surface-2);border:1px solid var(--hwc-border);border-radius:8px;color:var(--hwc-text);cursor:pointer;font-size:13px;height:30px;line-height:1;width:30px}.hwc-review-actions button:hover:not(:disabled){border-color:var(--hwc-accent)}.hwc-review-actions button:disabled{cursor:not-allowed;opacity:.35}.hwc-review-actions button.is-remove:hover{border-color:var(--hwc-danger);color:var(--hwc-danger)}.hwc-notice{background:#eab3081f;border:1px solid #eab30866;border-radius:10px;color:var(--hwc-text);font-size:12.5px;line-height:1.5;margin-bottom:14px;padding:10px 12px}@media (max-width:640px){.hw-creator-overlay{align-items:stretch;padding:0}.hw-creator-drawer,.hw-creator-drawer.is-wide{border:none;border-radius:0;height:100vh;height:100dvh;max-height:none;max-width:none}.hw-creator-body,.hw-creator-footer,.hw-creator-header,.hwc-stepper{padding-left:16px;padding-right:16px}.hwc-step-value{display:none}.hwc-step-label{font-size:11px}.hwc-step:not(:last-child):after{left:32px}.hwc-search{width:100%}.hwc-input,.hwc-search input{font-size:16px;min-height:44px}.hwc-choices,.hwc-grid,.hwc-grid.is-tight,.hwc-mode-grid{grid-template-columns:1fr}.hwc-card,.hwc-card.is-small{min-height:52px}.hwc-chip-btn,.hwc-segment,.hwc-segment-input{min-height:44px}.hwc-question-list{max-height:none;overflow:visible}.hw-creator-footer{flex-wrap:wrap;padding-bottom:calc(14px + env(safe-area-inset-bottom))}.hwc-footer-info{text-align:center;width:100%}.hwc-footer-info:empty{display:none}.hwc-footer-actions{width:100%}.hwc-footer-actions button{flex:1 1;min-height:46px}.hw-creator-footer .btn-primary-premium{min-width:0}}.drawer-overlay{align-items:center;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);background:#000000d9;box-sizing:border-box;display:flex;inset:0;justify-content:center;opacity:0;padding:20px;pointer-events:none;position:fixed;transition:opacity .2s ease;z-index:1000000}.drawer-overlay.open{opacity:1;pointer-events:auto}.drawer-container{animation:modalPop .25s cubic-bezier(.16,1,.3,1);background:var(--bg-card);border:1px solid rgba(var(--hairline),.16);border-radius:22px;box-shadow:0 25px 60px rgba(0,0,0,calc(var(--shadow-k)*.85)),0 0 35px #2563eb40;box-sizing:border-box;display:flex;flex-direction:column;height:85vh;max-height:85vh;max-width:600px;overflow:hidden;width:100%}.drawer-header{align-items:center;border-bottom:1px solid rgba(var(--hairline),.1);display:flex;flex-shrink:0;justify-content:space-between;padding:18px 24px}.drawer-header h3{color:var(--text-main);font-size:18px;font-weight:800;margin:0 0 4px}.drawer-header p{color:var(--text-subtle);font-size:12.5px;margin:0}.drawer-controls{align-items:center;background:rgba(var(--glass-900),.6);border-bottom:1px solid rgba(var(--hairline),.08);display:flex;flex-shrink:0;gap:10px;padding:14px 24px}.drawer-close-btn{align-items:center;background:rgba(var(--hairline),.08);border:1px solid rgba(var(--hairline),.12);border-radius:50%;color:var(--text-subtle);cursor:pointer;display:flex;height:34px;justify-content:center;transition:all .2s ease;width:34px}.drawer-close-btn:hover{background:var(--bg-card-header);border-color:var(--accent-light);color:var(--text-main)}.drawer-body{-webkit-overflow-scrolling:touch;display:flex;flex:1 1;flex-direction:column;gap:14px;min-height:0;overflow-y:auto!important;padding:16px 20px 24px}.drawer-body::-webkit-scrollbar{width:10px}.drawer-body::-webkit-scrollbar-track{background:rgba(var(--glass-900),.7);border-radius:8px}.drawer-body::-webkit-scrollbar-thumb{background:#475569;border:2px solid var(--bg-card);border-radius:8px}.drawer-body::-webkit-scrollbar-thumb:hover{background:var(--accent-light)}.drawer-footer{background:rgba(var(--glass-900),.9);border-top:1px solid rgba(var(--hairline),.1);display:flex;flex-shrink:0;gap:12px;justify-content:flex-end;padding:16px 24px}.btn-secondary-premium{background:#0000;border:1px solid var(--border-dark);border-radius:10px;color:var(--text-muted);cursor:pointer;font-size:13px;font-weight:650;padding:9px 18px;transition:all .2s ease}.btn-secondary-premium:hover{background:var(--bg-card-header);color:var(--text-main)}.btn-primary-premium{background:linear-gradient(135deg,var(--accent-primary) 0,var(--accent-active) 100%);border:1px solid rgba(var(--hairline),.2);border-radius:10px;box-shadow:0 4px 14px #2563eb66;color:#fff;cursor:pointer;font-size:13px;font-weight:750;padding:9px 20px;transition:all .2s ease}.btn-primary-premium:hover:not(:disabled){background:linear-gradient(135deg,var(--accent-hover) 0,var(--accent-primary) 100%);box-shadow:0 6px 18px #2563eb99;transform:translateY(-2px)}.btn-primary-premium:disabled{cursor:not-allowed;opacity:.6}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes modalPop{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@media (max-width:1024px){.curriculum-workspace-layout,.detail-form-grid{grid-template-columns:1fr}}.class-report-card{background:#223149;background:var(--bg-card,#223149);border:1px solid #394e72;border:1px solid var(--border-dark,#394e72);border-radius:18px;box-shadow:0 16px 36px rgba(0,0,0,calc(var(--shadow-k)*.5));overflow:hidden;transition:all .2s ease}.class-report-table{border-collapse:collapse;text-align:left;width:100%}.class-report-thead-tr{background:var(--bg-card);border-bottom:1px solid var(--border-dark)}.class-report-th-student{background:var(--bg-card);color:var(--text-muted);font-size:13.5px;font-weight:800;left:0;min-width:220px;padding:16px 20px;position:-webkit-sticky;position:sticky;z-index:3}.class-report-th-assignment{color:var(--fg-blue-300);font-size:13px;font-weight:700;min-width:130px;padding:16px 14px;text-align:center}.class-report-th-assignment.test{color:var(--fg-indigo-300)}.class-report-th-pts{color:var(--fg-64748b);font-size:11px;font-weight:600}.class-report-th-completed{background:#10b98126;color:var(--fg-emerald-300)}.class-report-th-avg,.class-report-th-completed{font-size:13px;font-weight:800;min-width:120px;padding:16px;text-align:center}.class-report-th-avg{background:#a855f726;color:var(--fg-violet-400)}.class-report-row{border-bottom:1px solid var(--border-dark);transition:background .15s ease}.class-report-row.even{background:#0000}.class-report-row.odd{background:rgba(var(--glass-800),.35)}.class-report-td-student{left:0;padding:14px 20px;position:-webkit-sticky;position:sticky;transition:background .15s ease;z-index:2}.class-report-td-student.even{background:#223149;background:var(--bg-card,#223149)}.class-report-td-student.odd{background:#2c3d5a;background:var(--surface-hover,#2c3d5a)}.class-report-student-link{align-items:center;display:inline-flex;gap:6px;text-decoration:none}.class-report-student-name{color:var(--fg-sky-400);font-size:14px;font-weight:750;transition:color .15s ease}.class-report-student-name:hover{color:var(--fg-blue-400);text-decoration:underline}.class-report-student-email{color:var(--fg-64748b);font-size:11.5px;margin-top:2px}.class-report-score-chip{align-items:center;border-radius:10px;display:inline-flex;flex-direction:column;justify-content:center;min-width:60px;padding:4px 10px}.class-report-score-chip.hw{background:#10b98126;border:1px solid #34d39959}.class-report-score-chip.hw .score-val{color:var(--fg-emerald-400);font-size:13px;font-weight:800}.class-report-score-chip.hw .score-pct{color:var(--fg-emerald-300);font-size:10.5px;font-weight:700}.class-report-score-chip.test{background:#818cf826;border:1px solid #a5b4fc59}.class-report-score-chip.test .score-val{color:var(--fg-indigo-300);font-size:13px;font-weight:800}.class-report-score-chip.test .score-pct{color:var(--fg-violet-300);font-size:10.5px;font-weight:700}.class-report-missing-chip{background:rgba(var(--hairline),.04);border:1px solid rgba(var(--hairline),.08);border-radius:8px;color:var(--fg-64748b);display:inline-block;font-size:12px;font-weight:600;padding:4px 10px}.class-report-progress-chip{background:#eab3081a;border:1px solid #eab30859;border-radius:8px;color:var(--fg-amber-400);cursor:help;display:inline-block;font-size:12px;font-weight:700;padding:4px 10px}.class-report-badge-stat{align-items:center;border-radius:20px;display:inline-flex;font-size:12.5px;font-weight:800;gap:4px;padding:5px 12px}.class-report-badge-stat.stat-all{background:#10b98133;border:1px solid #34d39966;color:var(--fg-emerald-400)}.class-report-badge-stat.stat-part{background:#f59e0b33;border:1px solid #fbbf2466;color:var(--fg-amber-400)}.class-report-badge-stat.stat-none{background:#ef444433;border:1px solid #f8717166;color:var(--fg-red-400)}.class-report-badge-stat.stat-med{background:#3b82f633;border:1px solid #60a5fa66;color:var(--fg-blue-400)}.btn-sheet-switcher{align-items:center;border-radius:12px;display:flex;font-size:13.5px;gap:7px;padding:10px 22px;transition:all .2s ease}.btn-sheet-switcher.active-hw{background:#10b98133;border:1.5px solid #34d399;color:var(--fg-emerald-400);cursor:default;font-weight:800}.btn-sheet-switcher.active-tests{background:#818cf833;border:1.5px solid #818cf8;color:var(--fg-indigo-300);cursor:default;font-weight:800}.btn-sheet-switcher.inactive{background:#0000;border:1.5px solid var(--border-dark);color:var(--text-subtle);cursor:pointer;font-weight:700}.btn-sheet-switcher.inactive:hover{border-color:#64748b;color:var(--text-muted)}.btn-export-pdf-report{align-items:center;background:#2563eb40;border:1px solid #3b82f673;border-radius:12px;color:var(--fg-blue-300);cursor:pointer;display:flex;font-size:13px;font-weight:750;gap:6px;padding:9px 18px;transition:all .2s ease;white-space:nowrap}.btn-export-pdf-report:hover:not(:disabled){background:#2563eb66;color:#fff}:root[data-theme=light] .curriculum-header-card{background:linear-gradient(135deg,#fff,#f0f7ff);border:1px solid #cbd5e1;box-shadow:0 10px 25px -5px #0000000d,0 8px 10px -6px #00000008}:root[data-theme=light] .curriculum-course-title{color:#0f172a}:root[data-theme=light] .curriculum-course-desc{color:#475569}:root[data-theme=light] .curriculum-course-desc strong{color:#0f172a!important}:root[data-theme=light] .btn-back-courses{background:#fff;border:1px solid #cbd5e1;color:#475569}:root[data-theme=light] .btn-back-courses:hover{background:#f1f5f9;border-color:#94a3b8;color:#0f172a}:root[data-theme=light] .btn-enrolled-students-pill{background:#eff6ff;border:1px solid #bfdbfe;color:var(--accent-text)}:root[data-theme=light] .btn-enrolled-students-pill:hover{background:#dbeafe;color:#1d4ed8}:root[data-theme=light] .btn-export-pdf-report{background:linear-gradient(135deg,#2563eb,#1d4ed8);border:1px solid #1e40af;box-shadow:0 4px 14px #2563eb40;color:#fff!important}:root[data-theme=light] .btn-export-pdf-report:hover:not(:disabled){background:linear-gradient(135deg,#1d4ed8,#1e40af)}:root[data-theme=light] .btn-sheet-switcher.active-hw{background:#ecfdf5;border:1.5px solid #059669;color:#047857}:root[data-theme=light] .btn-sheet-switcher.active-tests{background:#eef2ff;border:1.5px solid var(--accent-primary);color:#4338ca}:root[data-theme=light] .btn-sheet-switcher.inactive{background:#fff;border:1.5px solid #cbd5e1;color:#64748b}:root[data-theme=light] .btn-sheet-switcher.inactive:hover{background:#f8fafc;border-color:#94a3b8;color:#0f172a}:root[data-theme=light] .class-report-card{background:#fff;border:1px solid #cbd5e1;box-shadow:0 4px 20px #0000000d}:root[data-theme=light] .class-report-thead-tr{background:#f1f5f9;border-bottom:1px solid #cbd5e1}:root[data-theme=light] .class-report-th-student{background:#f1f5f9;color:#0f172a}:root[data-theme=light] .class-report-th-assignment{color:#1e40af}:root[data-theme=light] .class-report-th-assignment.test{color:#4338ca}:root[data-theme=light] .class-report-th-pts{color:#64748b}:root[data-theme=light] .class-report-th-completed{background:#d1fae5;color:#065f46}:root[data-theme=light] .class-report-th-avg{background:#ede9fe;color:#164599}:root[data-theme=light] .class-report-row{border-bottom:1px solid #e2e8f0}:root[data-theme=light] .class-report-row.even{background:#fff}:root[data-theme=light] .class-report-row.odd{background:#f8fafc}:root[data-theme=light] .class-report-row:hover{background:#f0f7ff!important}:root[data-theme=light] .class-report-td-student.even{background:#fff}:root[data-theme=light] .class-report-td-student.odd{background:#f8fafc}:root[data-theme=light] .class-report-row:hover .class-report-td-student{background:#f0f7ff!important}:root[data-theme=light] .class-report-student-name{color:#0284c7}:root[data-theme=light] .class-report-student-name:hover{color:#0369a1}:root[data-theme=light] .class-report-student-email{color:#64748b}:root[data-theme=light] .class-report-score-chip.hw{background:#ecfdf5;border:1px solid #a7f3d0}:root[data-theme=light] .class-report-score-chip.hw .score-val{color:var(--success-text)}:root[data-theme=light] .class-report-score-chip.hw .score-pct{color:#047857}:root[data-theme=light] .class-report-score-chip.test{background:#eef2ff;border:1px solid #c7d2fe}:root[data-theme=light] .class-report-score-chip.test .score-val{color:#4338ca}:root[data-theme=light] .class-report-score-chip.test .score-pct{color:var(--accent-text)}:root[data-theme=light] .class-report-missing-chip{background:#f1f5f9;border:1px solid #e2e8f0;color:#64748b}:root[data-theme=light] .class-report-progress-chip{background:#fefce8;border:1px solid #fde047;color:#a16207}:root[data-theme=light] .class-report-badge-stat.stat-all{background:#ecfdf5;border:1px solid #a7f3d0;color:#047857}:root[data-theme=light] .class-report-badge-stat.stat-part{background:#fffbeb;border:1px solid #fde68a;color:#b45309}:root[data-theme=light] .class-report-badge-stat.stat-none{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c}:root[data-theme=light] .class-report-badge-stat.stat-med{background:#eff6ff;border:1px solid #bfdbfe;color:#1d4ed8}:root[data-theme=light] .curriculum-left-sidebar,:root[data-theme=light] .curriculum-right-workspace{background:#fff;border:1px solid #cbd5e1;box-shadow:0 4px 16px #0000000d}:root[data-theme=light] .timeline-item-card{background:#f8fafc;border:1px solid #e2e8f0}:root[data-theme=light] .timeline-item-card:hover{background:#f1f5f9;border-color:#cbd5e1}:root[data-theme=light] .timeline-item-card.active-session{background:#eff6ff;border-color:#3b82f6;box-shadow:0 0 16px #2563eb1a}:root[data-theme=light] .timeline-node-circle{background:#fff;border:1px solid #cbd5e1;color:#64748b}:root[data-theme=light] .timeline-session-title{color:#0f172a}:root[data-theme=light] .workspace-header{border-bottom:1px solid #e2e8f0}:root[data-theme=light] .workspace-header-info h3{color:#0f172a}:root[data-theme=light] .btn-add-session-glow,:root[data-theme=light] .btn-save-session-glow{color:#fff!important}:root[data-theme=light] .drawer-controls{background:var(--bg-card)}:root[data-theme=light] .drawer-body::-webkit-scrollbar-track{background:var(--bg-card)}:root[data-theme=light] .drawer-footer{background:var(--bg-card)}:root[data-theme=light] .class-report-row.odd{background:#0f172a0a}.hwv-open-link{color:inherit;cursor:pointer;text-decoration:none}.hwv-open-link-title{align-items:center;display:flex;gap:6px;word-break:break-word}.hwv-open-link:focus-visible .hwv-open-link-title,.hwv-open-link:hover .hwv-open-link-title{text-decoration:underline;text-underline-offset:3px}.hwv-open-link-icon{color:var(--text-subtle);flex-shrink:0;opacity:0;transition:opacity .15s ease}.hwv-open-link:focus-visible .hwv-open-link-icon,.hwv-open-link:hover .hwv-open-link-icon{opacity:.8}.hwv-th-link{color:inherit;display:block;line-height:1.3;text-decoration:none;word-break:break-word}.hwv-th-link:focus-visible,.hwv-th-link:hover{text-decoration:underline;text-underline-offset:3px}.time_item{background-color:initial!important;font-size:18px}.question-container{align-items:center;background-color:var(--text-main-light);background-color:var(--bg,var(--text-main-light));display:flex;flex-direction:column;min-height:calc(100vh - 68px);padding:2.5rem 2.5rem 6rem}.question-number{border:1px solid var(--border-light,var(--text-main-lighter));border-radius:14px;border-radius:var(--radius-lg,14px);box-shadow:var(--shadow-sm);flex-wrap:wrap;gap:6px;margin-bottom:1.25rem;max-width:1100px;padding:.75rem 1rem;width:100%}.question-number,.question-number p{background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));display:flex;justify-content:center}.question-number p{align-items:center;border:1.5px solid var(--border,var(--text-muted));border-radius:50%;color:var(--text-dim);color:var(--text-muted,var(--text-dim));cursor:pointer;font-size:.8rem;font-weight:600;height:34px;margin:0;transition:all .15s ease;-webkit-user-select:none;user-select:none;width:34px}.question-number p:hover{background:var(--bg-eff6ff);background:var(--sat-light-blue,var(--bg-eff6ff));border-color:var(--sat-blue,var(--accent-primary));color:var(--accent-primary);color:var(--sat-blue,var(--accent-primary))}.question-number p.active-question{background-color:#1b3a6b;background-color:var(--sat-navy,#1b3a6b);border-color:var(--sat-navy,var(--line-1b3a6b));color:var(--fixed-50)}.question-number p.has-answer{background:var(--bg-eff6ff);background:var(--sat-light-blue,var(--bg-eff6ff));border-color:var(--sat-blue,var(--accent-primary));color:var(--accent-primary);color:var(--sat-blue,var(--accent-primary))}.question-container.calculator-open{padding-left:420px;transition:all .3s cubic-bezier(.4,0,.2,1)}@media (max-width:992px){.question-container.calculator-open{padding-left:0}}.question-content-wrapper{align-items:stretch;display:flex;flex-direction:column;gap:1.25rem;max-width:860px;width:100%}.question-form{background:#0000;border:none;border-radius:0;box-shadow:none;flex:1.2 1;min-width:0;overflow:visible}.question-form-head{align-items:center;background:#0000;border-bottom:2px dashed var(--line-cbd5e1);display:flex;justify-content:space-between;margin-bottom:1rem;padding:0 0 .75rem}.question-form-head>p{color:#f8fafc;color:var(--text-main,#f8fafc);font-size:1.4rem;font-weight:700;letter-spacing:.04em;margin:0}:root[data-theme=light] .question-form-head>p{color:#0f172a}.end-head{align-items:center;display:flex;gap:.6rem}.flash-mode-button,.fullscreen-button{align-items:center;background:#ffffff1f;border:1px solid #fff3;border-radius:6px;border-radius:var(--radius-sm,6px);color:#ffffffd9;cursor:pointer;display:flex;height:32px;justify-content:center;position:relative;transition:all .15s ease;width:32px}.fullscreen-button:hover{background:#ffffff38;border-color:#fff6}.flash-mode-button{font-size:.95rem}.flash-mode-button.flash-active{background:#d97706;background:var(--warning,#d97706);border-color:#f59e0b;color:var(--fixed-50)}.flash-mode-button:hover{background:#ffffff38}.flash-mode-button.flash-locked{cursor:not-allowed;opacity:.6}.flash-speed-control{align-items:center;display:flex;gap:6px}.flash-speed-control label{color:#ffffffbf;font-size:.75rem;letter-spacing:.02em;white-space:nowrap}.flash-speed-control select{background:#ffffff1f;border:1px solid #ffffff4d;border-radius:5px;color:var(--text-main);cursor:pointer;font-size:.78rem;outline:none;padding:3px 6px}.timer{font-feature-settings:"tnum";align-items:center;background:#ffffff1f;border:1px solid #fff3;border-radius:20px;color:#ffffffe6;display:flex;font-size:.85rem;font-variant-numeric:tabular-nums;font-weight:600;gap:4px;letter-spacing:.02em;padding:4px 10px}.timer .time_item{color:var(--text-main);font-size:.85rem;font-weight:700}.question-form-body{min-height:180px;padding:1.5rem 1.5rem 1.25rem}.question-img{margin-bottom:1rem}.question-img img{border:1px solid var(--border-light,var(--text-main-lighter));border-radius:10px;border-radius:var(--radius,10px);margin:0 auto;max-height:280px;max-width:100%;object-fit:contain;width:auto}.flash-mode-question{align-items:center;display:flex;justify-content:center;min-height:120px;padding:1rem}.start-flash-btn{background:var(--accent-primary);background:var(--sat-blue,var(--accent-primary));border:none;border-radius:10px;border-radius:var(--radius,10px);color:var(--fixed-50);cursor:pointer;font-family:Inter,sans-serif;font-family:var(--font-body,"Inter",sans-serif);font-size:1rem;font-weight:600;padding:.75rem 2.5rem;transition:background-color .15s ease}.start-flash-btn:hover{background:var(--accent-active);background:var(--sat-hover-blue,var(--accent-active))}.flash-line{color:var(--bg-card);color:var(--text,var(--bg-card));font-size:1.4rem;font-weight:600;padding:.5rem;text-align:center}.flash-fade-out{animation:flashReveal .15s ease-in}@keyframes flashReveal{0%{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}.flash-answer-text{color:var(--fg-1b3a6b);color:var(--sat-navy-text,var(--fg-1b3a6b));font-size:1.6rem;font-weight:800;letter-spacing:.15em;text-transform:uppercase}.math-keyboard{margin-top:1rem}.math-keyboard>p{color:var(--text-dim);color:var(--text-muted,var(--text-dim));font-size:.8rem;font-weight:600;letter-spacing:.06em;margin-bottom:.5rem;text-transform:uppercase}.answer-input-container{position:relative;width:100%}.mcq-container{padding:1.25rem}.essay-container,.mcq-container{background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));border:1px solid var(--border-light,var(--text-main-lighter));border-radius:14px;border-radius:var(--radius-lg,14px);box-shadow:var(--shadow);flex-shrink:0;width:420px}.essay-container{display:flex;flex-direction:column;gap:1.25rem;padding:1.5rem}.essay-title{border-bottom:1px solid var(--border-light,var(--text-main-lighter));color:var(--text-dim);color:var(--text-muted,var(--text-dim));font-size:.75rem;font-weight:700;letter-spacing:.08em;margin:0;padding-bottom:.75rem;text-transform:uppercase}.essay-input-wrapper{display:flex;flex-direction:column;gap:1rem;width:100%}.essay-submit-btn{align-items:center;background:var(--accent-primary);background:var(--sat-blue,var(--accent-primary));border:none;border-radius:10px;border-radius:var(--radius,10px);color:var(--fixed-50);cursor:pointer;display:flex;font-size:.95rem;font-weight:600;gap:.5rem;justify-content:center;padding:.75rem 1.5rem;transition:background-color .15s ease;width:100%}.essay-submit-btn:hover{background:var(--accent-active);background:var(--sat-hover-blue,var(--accent-active))}.mcq-title{border-bottom:1px solid var(--border-light,var(--text-main-lighter));color:var(--text-dim);color:var(--text-muted,var(--text-dim));font-size:.75rem;font-weight:700;letter-spacing:.08em;margin:0 0 1rem;padding-bottom:.75rem;text-transform:uppercase}.mcq-answer-layout{counter-reset:choice-counter;display:flex;flex-direction:column;gap:.6rem}.mcq-choice{background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));border:1.5px solid var(--border,var(--text-muted));border-radius:10px;border-radius:var(--radius,10px);counter-increment:choice-counter;cursor:pointer;gap:.85rem;padding:.7rem 1rem;position:relative;-webkit-user-select:none;user-select:none}.mcq-choice,.mcq-choice:before{align-items:center;display:flex;transition:all .15s ease}.mcq-choice:before{background:var(--text-main);background:var(--surface-muted,var(--text-main));border:1.5px solid var(--border,var(--text-muted));border-radius:50%;color:var(--text-dim);color:var(--text-muted,var(--text-dim));content:counter(choice-counter,upper-alpha);flex-shrink:0;font-size:.8rem;font-weight:700;height:28px;justify-content:center;width:28px}.mcq-choice input[type=radio]{height:0;opacity:0;pointer-events:none;position:absolute;width:0}.mcq-choice:hover{background:var(--bg-eff6ff);background:var(--sat-light-blue,var(--bg-eff6ff))}.mcq-choice:hover,.mcq-choice:hover:before{border-color:var(--sat-blue,var(--accent-primary))}.mcq-choice:hover:before{background:var(--bg-ffffff);color:var(--accent-text);color:var(--sat-blue-text,var(--accent-text))}.mcq-choice.selected{background:var(--bg-eff6ff);background:var(--sat-light-blue,var(--bg-eff6ff));border-color:var(--sat-navy,var(--line-1b3a6b))}.mcq-choice.selected:before{background:#1b3a6b;background:var(--sat-navy,#1b3a6b);border-color:var(--sat-navy,var(--line-1b3a6b));color:var(--fixed-50)}.mcq-text{color:var(--bg-card);color:var(--text,var(--bg-card));flex:1 1;font-size:.95rem;font-weight:500;line-height:1.5}.mcq-error{font-size:.85rem;margin-top:.5rem}.graph-container{width:360px}.graph-answer-layout{grid-gap:.75rem;counter-reset:choice-counter;display:grid;gap:.75rem;grid-template-columns:repeat(2,1fr)}.graph-choice{align-items:center;background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));border:1.5px solid var(--border,var(--text-muted));border-radius:10px;border-radius:var(--radius,10px);counter-increment:choice-counter;cursor:pointer;display:flex;flex-direction:column;gap:.4rem;padding:.6rem;position:relative;transition:all .15s ease}.graph-choice:after{background:var(--text-main-light);background:var(--surface-muted,var(--text-main-light));border-radius:4px;color:var(--text-dim);color:var(--text-muted,var(--text-dim));content:counter(choice-counter,upper-alpha);font-size:.72rem;font-weight:700;left:8px;padding:1px 5px;position:absolute;top:6px}.graph-choice input[type=radio]{display:none}.graph-choice img{border-radius:6px;height:auto;max-height:130px;object-fit:contain;width:100%}.graph-choice:hover{border-color:var(--sat-blue,var(--accent-primary))}.graph-choice.selected,.graph-choice:hover{background:var(--bg-eff6ff);background:var(--sat-light-blue,var(--bg-eff6ff))}.graph-choice.selected{border-color:var(--sat-navy,var(--line-1b3a6b));box-shadow:0 0 0 2px #1b3a6b;box-shadow:0 0 0 2px var(--sat-navy,#1b3a6b)}.assignment-error-ops{gap:1rem;min-height:60vh;padding:2rem}.end-exam-error{margin-top:.5rem;max-width:780px;width:100%}.result-popup{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background-color:#0f172a99;inset:0;position:fixed;transition:background-color .3s ease;z-index:10000}.result-popup-hide{-webkit-backdrop-filter:none!important;backdrop-filter:none!important;background-color:initial!important}.result-popup-container{background-color:var(--bg-ffffff);background-color:var(--surface,var(--bg-ffffff));border-radius:20px;border-radius:var(--radius-xl,20px);box-shadow:0 20px 40px rgba(0,0,0,calc(var(--shadow-k)*.15));left:50%;padding:2rem;position:absolute;top:80px;transform:translateX(-50%);transition:top .4s cubic-bezier(.34,1.2,.64,1);width:min(560px,90vw)}.popup-top{top:-600px!important}.result-popup-head{border-bottom:1px solid var(--border-light,var(--text-main-lighter));margin-bottom:1.5rem;padding-bottom:1.25rem;text-align:center}.result-popup-head img{height:80px;margin:0 auto .75rem;object-fit:contain;width:80px}.result-popup-head p{color:var(--bg-card);color:var(--text,var(--bg-card));font-size:1.1rem;font-weight:700;margin:0}.result-popup-body{margin-bottom:1.5rem}.result-popup-body table{border-collapse:collapse;font-size:.9rem;width:100%}.result-popup-body th{background:#1b3a6b;background:var(--sat-navy,#1b3a6b);color:var(--fixed-50);font-size:.78rem;font-weight:600;letter-spacing:.04em;padding:.6rem 1rem;text-align:center;text-transform:uppercase}.result-popup-body th:first-child{border-radius:8px 0 0 8px}.result-popup-body th:last-child{border-radius:0 8px 8px 0}.result-popup-body td{border-bottom:1px solid var(--border-light,var(--text-main-lighter));color:var(--bg-card);color:var(--text,var(--bg-card));font-size:1.15rem;font-weight:700;padding:.8rem 1rem;text-align:center}.result-popup-actions{display:flex;flex-wrap:wrap;gap:.75rem;justify-content:center}.btn-download{align-items:center;background-color:#16a34a!important;background-color:var(--success,#16a34a)!important;display:flex;gap:.4rem}.btn-download:hover{background-color:#15803d!important}.model-answer-popup{-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);background-color:#0f172a8c;inset:0;position:fixed;transition:background-color .3s ease;z-index:10000}.answer-popup-hide{-webkit-backdrop-filter:none!important;backdrop-filter:none!important;background-color:initial!important}.popup-container{background-color:var(--bg-ffffff);background-color:var(--surface,var(--bg-ffffff));border-radius:20px;border-radius:var(--radius-xl,20px);box-shadow:0 20px 40px rgba(0,0,0,calc(var(--shadow-k)*.12));left:50%;padding:1.75rem;position:absolute;top:80px;transform:translateX(-50%);transition:top .4s cubic-bezier(.34,1.2,.64,1);width:min(480px,90vw)}.popup-container.popup-top{top:-600px!important}.popup-head{border-bottom:1px solid var(--border-light,var(--text-main-lighter));margin-bottom:1rem;padding-bottom:.75rem}.popup-head p{color:var(--bg-card);color:var(--text,var(--bg-card));font-size:1rem;font-weight:700;margin:0}.popup-body{margin-bottom:1.25rem}.popup-body p{color:var(--text-dim);color:var(--text-muted,var(--text-dim));font-size:.9rem}.report-popup-container{width:min(560px,90vw)}.report-popup-container.popup-top{top:-600px!important}.report-head p{font-size:1rem;font-weight:700}.assignment-popup-head{align-items:center;display:flex;gap:.75rem;margin-bottom:1rem}.assignment-popup-head img{flex-shrink:0;height:36px;object-fit:contain;width:36px}.first-ans{flex-wrap:wrap;gap:.75rem;margin-top:.5rem}.first-ans p{color:var(--text-dim);color:var(--text-muted,var(--text-dim));font-size:.9rem;font-weight:600}.answer-line{color:var(--text-muted);font-size:1.1rem}.checking-overlay{align-items:center;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#0f172ab3;display:flex;inset:0;justify-content:center;position:fixed;z-index:99999}.checking-content{align-items:center;background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));border-radius:20px;border-radius:var(--radius-xl,20px);box-shadow:0 20px 40px rgba(0,0,0,calc(var(--shadow-k)*.15));display:flex;flex-direction:column;gap:1rem;padding:2rem 2.5rem}.checking-spinner{animation:rotation .7s linear infinite;border:3px solid var(--border,var(--text-muted));border-radius:50%;border-top-color:var(--sat-blue,var(--accent-primary));height:40px;width:40px}.checking-text{color:var(--bg-card);color:var(--text,var(--bg-card));font-size:.95rem;font-weight:600;margin:0;text-align:center}.exit-dialog-overlay{align-items:center;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);background:#0f172aa6;display:flex;inset:0;justify-content:center;padding:1rem;position:fixed;z-index:99999}.exit-dialog{background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));border-radius:20px;border-radius:var(--radius-xl,20px);box-shadow:0 20px 40px rgba(0,0,0,calc(var(--shadow-k)*.15));max-width:420px;padding:2rem;text-align:center;width:100%}.exit-dialog-icon{color:var(--warning-text);font-size:2.5rem;margin-bottom:1rem}.exit-dialog h3{color:var(--bg-card);color:var(--text,var(--bg-card));font-size:1.2rem;font-weight:700;margin:0 0 .75rem}.exit-dialog p{color:var(--text-dim);color:var(--text-muted,var(--text-dim));font-size:.9rem;line-height:1.6;margin-bottom:1.5rem}.exit-dialog-actions{display:flex;gap:.75rem;justify-content:center}.exit-dialog-btn{border:none;border-radius:10px;border-radius:var(--radius,10px);cursor:pointer;font-family:Inter,sans-serif;font-family:var(--font-body,"Inter",sans-serif);font-size:.9rem;font-weight:600;padding:.65rem 1.5rem;transition:all .15s ease}.cancel-btn{background:var(--text-main-light);background:var(--surface-muted,var(--text-main-light));border:1px solid var(--border,var(--text-muted));color:var(--bg-card);color:var(--text,var(--bg-card))}.cancel-btn:hover{background:var(--text-main-lighter);background:var(--border-light,var(--text-main-lighter))}.confirm-btn{background:#dc2626;background:var(--error,#dc2626);color:var(--fixed-50)}.confirm-btn:hover{background:#b91c1c}.mobile-assignment-header{align-items:center;background:#1b3a6b;background:var(--sat-navy,#1b3a6b);border-radius:10px;border-radius:var(--radius,10px);display:flex;justify-content:space-between;margin-bottom:1rem;padding:.5rem 1rem;width:100%}.mobile-exit-btn{align-items:center;background:#ffffff26;border:none;border-radius:50%;color:var(--text-main);cursor:pointer;display:flex;font-size:1rem;height:34px;justify-content:center;width:34px}.mobile-header-info{flex:1 1;text-align:center}.mobile-question-indicator{color:#ffffffe6;font-size:.9rem;font-weight:700}.whiteboard-container{bottom:0;left:0;pointer-events:none;position:fixed;right:0;z-index:500}.whiteboard{background:rgba(var(--glass-900),.95);border-top:2px solid var(--border,var(--text-muted));height:280px;pointer-events:all;transition:height .25s ease}.whiteboard.close{border-top:none;height:0;overflow:hidden}.whiteboard-color{background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));border:1px solid var(--border-light,var(--text-main-lighter));border-radius:10px;border-radius:var(--radius,10px);bottom:280px;box-shadow:var(--shadow);display:flex;gap:6px;left:10px;padding:6px;pointer-events:all;position:fixed;z-index:501}.whiteboard-color .black,.whiteboard-color .blue,.whiteboard-color .red{border:2px solid #0000;border-radius:50%;cursor:pointer;height:22px;transition:border-color .15s ease;width:22px}.whiteboard-color .black{background:var(--bg-card)}.whiteboard-color .blue{background:var(--accent-primary);background:var(--sat-blue,var(--accent-primary))}.whiteboard-color .red{background:#dc2626;background:var(--error,#dc2626)}.whiteboard-color .black:hover,.whiteboard-color .blue:hover,.whiteboard-color .red:hover{border-color:var(--border,var(--text-muted))}.whiteboard-modify{background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));border:1px solid var(--border-light,var(--text-main-lighter));border-radius:10px;border-radius:var(--radius,10px);bottom:288px;box-shadow:var(--shadow);gap:8px;padding:6px 10px;pointer-events:all;position:fixed;right:10px;z-index:501}.whiteboard-modify i{border-radius:4px;color:var(--text-dim);color:var(--text-muted,var(--text-dim));cursor:pointer;font-size:1rem;padding:4px;transition:color .15s ease,background .15s ease}.whiteboard-modify i:hover{background:var(--bg-eff6ff);background:var(--sat-light-blue,var(--bg-eff6ff));color:var(--accent-primary);color:var(--sat-blue,var(--accent-primary))}.close-whiteboard{bottom:280px;left:50%;pointer-events:all;position:fixed;transform:translateX(-50%);z-index:502}.close-whiteboard p{align-items:center;background:#1b3a6b;background:var(--sat-navy,#1b3a6b);border-radius:50%;box-shadow:var(--shadow);color:var(--fixed-50);cursor:pointer;display:flex;font-size:.9rem;font-weight:700;height:28px;justify-content:center;width:28px}.whiteboard-img-container{bottom:280px;left:50%;max-width:200px;pointer-events:all;position:fixed;transform:translateX(-50%);transition:opacity .2s ease;z-index:501}.close-whiteboard-img{opacity:0;pointer-events:none}.whiteboard-img img{border:1px solid var(--border,var(--text-muted));border-radius:10px;border-radius:var(--radius,10px);width:100%}.x-img{background:#dc2626;background:var(--error,#dc2626);border-radius:50%;cursor:pointer;height:22px;position:absolute;right:-8px;top:-8px;width:22px}.x-img p{color:var(--text-main);font-size:.7rem;font-weight:700;margin:0}.mobile-fullscreen{background:var(--bg-ffffff);background:var(--surface,var(--bg-ffffff));min-height:100vh;padding:.5rem}@media (max-width:900px){.question-content-wrapper{flex-direction:column}.essay-container,.graph-container,.mcq-container{max-width:100%;width:100%}.graph-answer-layout{grid-template-columns:repeat(2,1fr)}}@media (max-width:600px){.question-container{padding:1rem .75rem 5rem}.question-number p{font-size:.75rem;height:30px;width:30px}.question-form-body{padding:1.1rem 1rem 1rem}.mcq-choice{gap:.7rem;padding:.6rem .8rem}.mcq-choice:before{font-size:.72rem;height:24px;width:24px}.result-popup-container{padding:1.5rem 1.25rem;top:50px;width:92vw}.popup-container{padding:1.5rem;width:92vw}.graph-answer-layout{grid-template-columns:repeat(2,1fr)}}@media (max-width:400px){.question-number p{font-size:.7rem;height:28px;width:28px}.graph-answer-layout{grid-template-columns:1fr 1fr}}.scratchboard-outer{margin:10px auto 0;max-width:1100px;width:100%}.scratchboard-toggle-btn{align-items:center;background:linear-gradient(135deg,#1e3a5f 0,var(--accent-primary) 100%);border:none;border-radius:10px;box-shadow:0 2px 8px #2563eb40;color:var(--fixed-50);cursor:pointer;display:flex;font-size:13.5px;font-weight:600;gap:8px;letter-spacing:.01em;padding:9px 18px;transition:all .2s}.scratchboard-toggle-btn:hover{box-shadow:0 4px 14px #2563eb66;transform:translateY(-1px)}.scratchboard-toggle-btn.open{background:linear-gradient(135deg,#374151,#4b5563);box-shadow:0 2px 8px rgba(0,0,0,calc(var(--shadow-k)*.2))}.scratchboard-panel{animation:scratchSlideIn .22s cubic-bezier(.22,1,.36,1);border:2px solid var(--accent-primary);border-radius:12px;box-shadow:0 4px 20px #2563eb26;margin-top:8px;overflow:hidden}@keyframes scratchSlideIn{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.scratch-toolbar{align-items:center;background:var(--bg-card-header);display:flex;flex-wrap:wrap;gap:8px;padding:8px 14px}.scratch-toolbar-label{color:var(--text-subtle);font-size:12px;font-weight:600;letter-spacing:.05em;margin-right:2px;text-transform:uppercase}.scratch-color-btn{border:2px solid #0000;border-radius:50%;cursor:pointer;height:24px;padding:0;transition:all .15s;width:24px}.scratch-color-btn:hover{border-color:#ffffff80;transform:scale(1.2)}.scratch-color-btn.active{border-color:var(--fixed-50);box-shadow:0 0 0 2px var(--accent-primary);transform:scale(1.15)}.scratch-toolbar-sep{background:#ffffff26;height:20px;margin:0 4px;width:1px}.scratch-tool-btn{background:#ffffff14;border:1px solid #ffffff1f;border-radius:6px;color:var(--text-muted);cursor:pointer;font-size:13px;padding:5px 10px;transition:all .15s}.scratch-tool-btn:hover{background:#ffffff26;color:var(--text-main)}.scratch-toolbar-hint{color:var(--text-dim);font-size:11px;font-style:italic;margin-left:auto}.scratchboard-canvas-wrap{background:var(--bg-ffffff);border-top:1px solid #2563eb4d;line-height:0}.scratchboard-canvas-wrap canvas{display:block!important;width:100%!important}.scratch-thumb-cell{text-align:center}.scratch-thumb{border:1px solid var(--line-e2e8f0);border-radius:6px;cursor:pointer;height:56px;object-fit:cover;transition:transform .15s,box-shadow .15s;width:80px}.scratch-thumb:hover{box-shadow:0 4px 12px rgba(0,0,0,calc(var(--shadow-k)*.15));transform:scale(1.08)}.scratch-lightbox{align-items:center;animation:fadeInOverlay .2s ease;background:#000c;display:flex;inset:0;justify-content:center;position:fixed;z-index:9999}.scratch-lightbox img{background-color:var(--bg-f8fafc)!important;border-radius:12px;box-shadow:0 20px 60px rgba(0,0,0,calc(var(--shadow-k)*.5));max-height:85vh;max-width:90vw;padding:12px}.img-popup-container img,.model-answer-popup img,.popup-body img{background-color:var(--bg-f8fafc)!important;border-radius:8px;padding:10px}.scratch-lightbox-close{align-items:center;background:#ffffff1a;border:1px solid #fff3;border-radius:50%;color:var(--text-main);cursor:pointer;display:flex;font-size:18px;height:40px;justify-content:center;position:absolute;right:24px;top:20px;transition:all .15s;width:40px}.scratch-lightbox-close:hover{background:#ef44444d;border-color:#ef4444}.interactive-graph-question-box{background:#0000;border:none;border-radius:0;box-shadow:none;box-sizing:border-box;padding:0}.hw-finish-summary{align-items:center;display:flex;flex-direction:column;gap:14px;padding:8px 0;text-align:center}.hw-finish-score{display:flex;flex-direction:column;gap:2px}.hw-finish-score span,.hw-finish-stats span{color:var(--fg-64748b);font-size:12px;font-weight:700;letter-spacing:.05em;text-transform:uppercase}.hw-finish-score strong{color:var(--fg-1d4ed8);font-size:34px;font-weight:800}.hw-finish-score em{color:var(--fg-475569);font-style:normal;font-weight:700}.hw-finish-stats{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}.hw-finish-stats>div{background:var(--bg-f1f5f9);border:1px solid var(--line-e2e8f0);border-radius:10px;display:flex;flex-direction:column;gap:2px;min-width:120px;padding:10px 14px}.hw-finish-stats strong{color:var(--fg-0f172a);font-size:17px}.hw-finish-hint{color:var(--fg-64748b);font-size:13px;margin:0}.assignment-report-container{background:var(--bg-main);font-family:var(--font-body);font-size:18px;padding:1rem 2rem 6rem}.assignment-report-body{background-color:var(--bg-f8fafc);border-radius:15px;box-shadow:0 6px 15px #0000001a;overflow-x:auto;padding:1rem}.assignment-report-body table{border-collapse:collapse;border-radius:12px;overflow:hidden;width:100%}.assignment-report-body th{background:var(--bg-card-header);border-bottom:3px solid var(--accent-primary);color:var(--text-main);font-size:18px;font-weight:700;padding:12px;text-transform:uppercase}.assignment-report-body td{color:var(--fg-0f172a);font-size:17px;padding:10px;text-align:center}.assignment-report-body tr:nth-child(2n),.assignment-report-body tr:nth-child(odd){background-color:var(--bg-card)}.assignment-report-body tr:hover{background-color:var(--surface-hover);transition:.3s ease-in-out}:root[data-theme=dark] .assignment-report-body td{color:#f8fafc;color:var(--text-main,#f8fafc)}:root[data-theme=dark] .assignment-report-body tr:nth-child(2n){background-color:#ffffff05}:root[data-theme=dark] .assignment-report-body tr:nth-child(odd){background-color:#ffffff0d}:root[data-theme=dark] .assignment-report-body tr:hover{background-color:#6366f126}.question-assignment-title{color:var(--fg-333333);font-size:16px;font-weight:700;line-height:1.6;max-width:100%}.assignment-report-body td:nth-child(2),.question-assignment-title{word-wrap:break-word;overflow-wrap:break-word;text-align:left;white-space:normal}.assignment-report-body td:nth-child(2){max-width:400px;min-width:200px}.assignment-report-body table{table-layout:auto}.assignment-report-body td img{border-radius:6px;height:auto;max-width:100%}.assignment-report-body .katex-display{max-width:100%;overflow-x:auto;overflow-y:hidden}.assignment-report-body .katex{font-size:.95em;white-space:normal}.success{color:var(--success-text);font-weight:700}.wrong{color:var(--fg-e63946);font-weight:700}.not-answered{color:#ff6f00;font-weight:700}tfoot td{font-size:18px;padding:12px}.result p,.timer p,tfoot td{background:var(--bg-card-header);color:var(--fg-2d3436);font-weight:700}.result p,.timer p{border-radius:8px;font-size:22px;margin-left:.4rem;padding:.3rem .8rem}.timer{margin-left:1rem}.img-popup-container{background-color:var(--bg-f8fafc);border:4px solid var(--accent-primary);border-radius:15px;max-height:80vh;overflow-y:scroll;padding:1rem;position:absolute;top:50px;transition:.7s;width:60%}.update-grade{background-color:var(--bg-f8fafc);border:3px solid var(--border-dark);border-radius:12px;box-shadow:0 6px 15px rgba(0,0,0,calc(var(--shadow-k)*.2));padding:1.2rem 1.5rem;width:42%}.update-grade p{color:var(--fg-444444);font-size:20px;font-weight:700}.update-grade input{border:2px solid var(--border-dark);border-radius:6px;font-size:16px;margin-top:1rem;padding:.5rem;width:100%}.update-grade .button{background:var(--accent-primary);border:none;border-radius:8px;color:#222;cursor:pointer;font-weight:700;margin-top:1rem;padding:.5rem 1rem}.update-grade .button:first-of-type{margin-right:1rem}.update-grade .button:hover{background:var(--accent-primary);color:#fff;transition:.3s}@media only screen and (max-width:992px){.img-popup-container{width:70%}.update-grade{width:60%}}@media only screen and (max-width:768px){.assignment-report-container{padding:0 1rem 6rem}.img-popup-container,.update-grade{width:80%}}@media only screen and (max-width:600px){.assignment-report-container{padding:0 .8rem 6rem}.img-popup-container,.update-grade{width:95%}}@media (min-width:769px){.assignment-report-container{padding-top:80px}}.created{font-size:18px!important;margin-left:-.1rem;margin-top:.4rem}.update-popup-head{border-bottom:1px solid #b5b4b4;padding-bottom:.7rem;position:relative}.popup-close-btn{align-items:center;background:#0000;border:none;border-radius:50%;color:var(--fg-5d17eb);cursor:pointer;display:flex;font-size:24px;height:40px;justify-content:center;padding:.5rem;position:absolute;right:0;top:0;transition:all .3s ease;width:40px}.popup-close-btn:hover{background-color:#5d17eb1a;transform:scale(1.1)}.popup-close-btn:active{transform:scale(.95)}.teacher-reports-container{background-color:var(--bg-main);box-sizing:border-box;color:var(--text-main);font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;min-height:100vh;padding-bottom:80px}.reports-content{margin:0 auto;max-width:1400px;padding:100px 24px 60px}.reports-header{background:radial-gradient(circle at 50% 30%,#2563eb2e 0,#182337f2 75%),var(--bg-card);border:1px solid rgba(var(--hairline),.12);border-radius:20px;box-shadow:0 16px 36px rgba(0,0,0,calc(var(--shadow-k)*.5)),0 0 25px #2563eb1f;margin-bottom:36px;padding:36px 30px;position:relative;text-align:center}.reports-header h1{align-items:center;color:var(--text-main);display:flex;flex-wrap:wrap;font-size:2.2rem;font-weight:850;gap:12px;justify-content:center;letter-spacing:-.02em;margin:0 0 10px}.reports-header p{color:var(--text-subtle);font-size:14px;line-height:1.6;margin:0 auto;max-width:700px}.bulk-actions{align-items:center;display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-bottom:32px}.btn-deselect-all,.btn-download-combined,.btn-select-all{align-items:center;border:1px solid #0000;border-radius:12px;cursor:pointer;display:inline-flex;font-size:13.5px;font-weight:750;gap:8px;padding:12px 22px;text-decoration:none;transition:all .25s cubic-bezier(.16,1,.3,1)}.btn-select-all{background:linear-gradient(135deg,#0284c7,#0369a1);border-color:rgba(var(--hairline),.2);box-shadow:0 4px 14px #0284c759;color:#fff}.btn-select-all:hover{background:linear-gradient(135deg,#38bdf8,#0284c7);box-shadow:0 6px 18px #0284c78c;transform:translateY(-2px)}.btn-deselect-all{background:var(--bg-card-header);border:1px solid var(--border-dark);color:var(--text-muted)}.btn-deselect-all:hover{background:var(--border-dark);color:var(--text-main);transform:translateY(-2px)}.btn-download-combined{background:linear-gradient(135deg,#10b981,#059669);border-color:rgba(var(--hairline),.2);box-shadow:0 4px 14px #10b98159;color:#fff}.btn-download-combined:hover{background:linear-gradient(135deg,#34d399,#059669);box-shadow:0 6px 18px #10b9818c;transform:translateY(-2px)}.students-list{display:flex;flex-direction:column;gap:16px}.student-card{align-items:center;background:var(--bg-card);border:1px solid var(--bg-card-header);border-radius:18px;box-shadow:0 8px 24px rgba(0,0,0,calc(var(--shadow-k)*.35));display:flex;flex-wrap:wrap;gap:20px;justify-content:space-between;padding:22px 26px;transition:all .25s cubic-bezier(.16,1,.3,1)}.student-card:hover{border-color:#60a5fa66;box-shadow:0 14px 32px rgba(0,0,0,calc(var(--shadow-k)*.5)),0 0 20px #2563eb26;transform:translateY(-3px)}.student-card.selected{background:#2563eb14;border-color:var(--accent-hover)}.student-main-info{align-items:center;display:flex;flex:1 1;gap:16px;min-width:280px}.student-checkbox{accent-color:var(--accent-primary);border-radius:6px;cursor:pointer;height:20px;width:20px}.student-details{display:flex;flex-direction:column;gap:8px}.student-name-row{align-items:center;display:flex;flex-wrap:wrap;gap:10px}.student-name-row h3{color:var(--text-main);font-size:17px;font-weight:800;margin:0}.status-badge-completed{background:#10b98126;border:1px solid #34d39959;border-radius:20px;color:var(--fg-emerald-300)}.status-badge-completed,.status-badge-pending{align-items:center;display:inline-flex;font-size:11.5px;font-weight:750;gap:4px;padding:3px 10px}.status-badge-pending{background:#eab30826;border:1px solid #facc1559;border-radius:20px;color:var(--fg-yellow-300)}.student-metrics-strip{display:flex;flex-wrap:wrap;gap:8px}.metric-pill{align-items:center;background:var(--bg-card-header);border:1px solid var(--border-dark);border-radius:8px;color:var(--text-subtle);display:inline-flex;font-size:12px;gap:4px;padding:5px 12px}.metric-pill strong{color:var(--text-main);font-weight:750}.metric-pill.mark strong{color:var(--accent-light)}.metric-pill.percentage strong{color:var(--fg-emerald-400)}.student-timestamp{color:var(--text-dim);font-size:11.5px;margin:0}.student-actions-group{align-items:center;display:flex;gap:10px}.btn-view-details{align-items:center;background:linear-gradient(135deg,#0284c7,#0369a1);border:1px solid rgba(var(--hairline),.15);border-radius:10px;color:#fff;cursor:pointer;display:inline-flex;font-size:13px;font-weight:750;gap:6px;padding:9px 16px;text-decoration:none;transition:all .2s ease}.btn-view-details:hover{box-shadow:0 4px 14px #0284c773;transform:translateY(-2px)}.btn-individual-pdf{align-items:center;background:linear-gradient(135deg,var(--accent-primary) 0,var(--accent-active) 100%);border:1px solid rgba(var(--hairline),.15);border-radius:10px;color:#fff;cursor:pointer;display:inline-flex;font-size:13px;font-weight:750;gap:6px;padding:9px 16px;transition:all .2s ease}.btn-individual-pdf:hover{background:linear-gradient(135deg,var(--accent-hover) 0,var(--accent-primary) 100%);box-shadow:0 4px 14px #2563eb80;transform:translateY(-2px)}.reports-empty-box{background:var(--bg-card);border:1px dashed var(--border-dark);border-radius:18px;color:var(--text-subtle);padding:60px 30px;text-align:center}.reports-empty-box h3{color:var(--text-main);font-size:18px;margin:14px 0 6px}.student-attempts-row{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.attempt-chip{background:#131c2d;background:var(--bg-section,#131c2d);border:1px solid #394e72;border:1px solid var(--border-dark,#394e72);border-radius:999px;color:#cbd5e1;color:var(--text-muted,#cbd5e1);font-size:12px;padding:4px 10px}.attempt-chip strong{color:#f8fafc;color:var(--text-main,#f8fafc)}.attempt-chip.is-best{background:#10b9811f;border-color:#10b98180}.attempt-chip.is-open{border-style:dashed;opacity:.85}.attempt-chip{align-items:center;display:inline-flex;flex-wrap:wrap;gap:4px}.attempt-manual{color:var(--warning-text);font-weight:600}.attempt-actions{align-items:center;display:inline-flex;flex-wrap:wrap;gap:4px;margin-left:6px}.attempt-action{background:#0000;border:1px solid #394e72;border:1px solid var(--border-dark,#394e72);border-radius:999px;color:#f8fafc;color:var(--text-main,#f8fafc);cursor:pointer;font-size:11px;padding:2px 8px}.attempt-action:hover:not(:disabled){border-color:#3b82f6}.attempt-action.is-primary{background:#2563eb;border-color:#2563eb;color:#fff}.attempt-action:disabled{cursor:default;opacity:.5}.attempt-mark-input{background:#131c2d;background:var(--bg-section,#131c2d);border:1px solid #394e72;border:1px solid var(--border-dark,#394e72);border-radius:6px;color:#f8fafc;color:var(--text-main,#f8fafc);font-size:12px;padding:2px 6px;width:64px}.counting-rule-note{color:#cbd5e1;color:var(--text-muted,#cbd5e1);font-size:13px;margin:0 0 12px}.mark-error{background:#ef44441f;border:1px solid #ef444466;border-radius:8px;color:var(--fg-red-300);font-size:13px;margin:0 0 12px;padding:8px 12px}.trial-devices{color:#cbd5e1;color:var(--text-muted,#cbd5e1);display:flex;flex-direction:column;font-size:12px;gap:4px;margin-top:8px}.trial-devices-row{align-items:center;display:flex;flex-wrap:wrap;gap:6px}.trial-devices-row.is-many .trial-devices-label strong{color:var(--warning-text)}.trial-device{background:#131c2d;background:var(--bg-section,#131c2d);border:1px solid #394e72;border:1px solid var(--border-dark,#394e72);border-radius:6px;overflow-wrap:anywhere;padding:3px 8px}.trial-device strong{color:#f8fafc;color:var(--text-main,#f8fafc)}.student-devices{position:relative}.student-devices-panel{background:#0f1626;background:var(--bg-card,#0f1626);border:1px solid #394e72;border:1px solid var(--border-dark,#394e72);border-radius:10px;box-shadow:0 10px 30px rgba(0,0,0,calc(var(--shadow-k)*.35));color:#cbd5e1;color:var(--text-muted,#cbd5e1);font-size:12px;padding:12px;position:absolute;right:0;top:calc(100% + 6px);width:min(420px,calc(100vw - 32px));z-index:20}.student-devices-panel p{margin:0 0 6px}.student-devices-title{color:#f8fafc;color:var(--text-main,#f8fafc);font-weight:700;margin-top:8px!important}.student-device{align-items:center;border-top:1px solid #394e72;border-top:1px solid var(--border-dark,#394e72);display:flex;gap:8px;justify-content:space-between;overflow-wrap:anywhere;padding:6px 0}.student-device strong{color:#f8fafc;color:var(--text-main,#f8fafc)}.student-device.is-ended{opacity:.75}.student-devices-error{color:var(--fg-red-400)}.student-history-container{background-color:var(--bg-main);min-height:100vh}.history-content{margin:0 auto;max-width:1200px;padding:80px 20px 20px}.history-header{background:var(--bg-ffffff);border-radius:12px;box-shadow:0 2px 10px #0000001a;margin-bottom:30px;padding:30px}.student-header-info{align-items:center;display:flex;gap:20px}.history-icon{color:var(--accent-text);flex-shrink:0}.history-header h1{color:var(--fg-333333);font-size:28px;font-weight:600;margin:0}.student-email{color:var(--fg-666666);font-size:16px;margin-top:5px}.stats-overview{grid-gap:20px;display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));margin-bottom:30px}.stat-card{align-items:center;background:var(--bg-ffffff);border-radius:12px;box-shadow:0 2px 10px #0000001a;display:flex;gap:15px;padding:20px;transition:all .3s ease}.stat-card:hover{box-shadow:0 4px 15px rgba(0,0,0,calc(var(--shadow-k)*.15));transform:translateY(-2px)}.stat-icon{align-items:center;background-color:var(--bg-f3e5f5);border-radius:10px;color:var(--fg-9c27b0);display:flex;height:50px;justify-content:center;width:50px}.stat-info{flex:1 1}.stat-label{color:var(--fg-666666);font-size:14px;margin:0}.stat-value{color:var(--fg-333333);font-size:28px;font-weight:700;margin:5px 0 0}.assignments-history{background:var(--bg-ffffff);border-radius:12px;box-shadow:0 2px 10px #0000001a;padding:30px}.assignments-history h2{align-items:center;color:var(--fg-333333);display:flex;font-size:24px;gap:10px;margin-bottom:25px}.assignments-list{display:flex;flex-direction:column;gap:20px}.assignment-history-card{align-items:center;border:2px solid var(--line-e0e0e0);border-radius:12px;display:flex;gap:20px;padding:20px;position:relative;transition:all .3s ease}.assignment-history-card:hover{border-color:var(--accent-primary);box-shadow:0 4px 12px #667eea33;transform:translateY(-2px)}.assignment-number{align-items:center;background:var(--accent-primary);border-radius:50%;color:#fff;display:flex;flex-shrink:0;font-size:18px;font-weight:700;height:50px;justify-content:center;width:50px}.assignment-main-info{flex:1 1}.assignment-title{color:var(--fg-333333);font-size:18px;font-weight:600;margin:0 0 10px}.assignment-meta{display:flex;flex-wrap:wrap;gap:20px;margin-bottom:12px}.meta-item{align-items:center;color:var(--fg-666666);display:flex;font-size:13px;gap:6px}.assignment-details-row{display:flex;flex-wrap:wrap;gap:30px}.detail-item{align-items:center;display:flex;gap:8px}.detail-label{color:var(--fg-666666);font-size:14px;font-weight:500}.detail-value{color:var(--fg-333333);font-size:14px;font-weight:600}.assignment-score-section{flex-shrink:0;gap:15px}.assignment-score-section,.score-circle{align-items:center;display:flex;flex-direction:column}.score-circle{background-color:var(--bg-f8f9fa);border:4px solid var(--success);border-radius:50%;height:100px;justify-content:center;width:100px}.percentage{color:var(--success-text);font-size:24px;font-weight:700}.grade-letter{color:var(--success-text);font-size:16px;font-weight:600}.view-details-btn{align-items:center;background-color:var(--accent-primary);border:none;border-radius:8px;color:#fff;cursor:pointer;display:flex;font-size:14px;font-weight:600;gap:6px;padding:10px 20px;text-decoration:none;transition:all .3s ease}.view-details-btn:hover{background-color:var(--accent-active);box-shadow:0 4px 12px #667eea66;color:#fff;transform:translateY(-2px)}.error-state,.loading-state{padding:60px 20px;text-align:center}.loading-state i{color:var(--success-text);font-size:48px;margin-bottom:20px}.loading-state h2{color:var(--fg-666666);font-size:20px}.error-state{background-color:var(--bg-fff3cd);border:1px solid #ffc107;border-radius:8px;margin:50px auto;max-width:600px}.error-state i{color:var(--error-text);font-size:48px;margin-bottom:20px}.error-state h2{color:var(--fg-856404);margin-bottom:15px}.error-state p{color:var(--fg-856404);font-size:16px}.error-details{color:var(--fg-666666);font-family:monospace;font-size:14px;margin-top:10px}.error-actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:25px}.btn-logout,.btn-retry{align-items:center;border:none;border-radius:5px;cursor:pointer;display:flex;font-size:16px;gap:8px;padding:12px 30px;transition:all .3s ease}.btn-logout{background-color:var(--success);color:#fff}.btn-logout:hover{background-color:#218838}.btn-retry{background-color:var(--accent-primary);color:#fff}.btn-retry:hover{background-color:#0056b3}.no-assignments{padding:60px 20px;text-align:center}.no-assignments i{color:#ccc;font-size:64px;margin-bottom:20px}.no-assignments h3{color:var(--fg-666666);margin-bottom:10px}.no-assignments p{color:#999;font-size:16px}.back-btn{align-items:center;background-color:var(--accent-primary);border-radius:8px;color:#fff;display:flex;font-weight:600;gap:8px;padding:10px 20px;text-decoration:none;transition:all .3s ease}.back-btn:hover{background-color:var(--accent-active);color:#fff;transform:translateY(-2px)}@media only screen and (max-width:768px){.history-content{padding:15px}.history-header{padding:20px}.student-header-info{align-items:flex-start;flex-direction:column;gap:15px}.history-header h1{font-size:22px}.stats-overview{gap:15px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}.stat-value{font-size:24px}.assignment-history-card{align-items:flex-start;flex-direction:column}.assignment-score-section{flex-direction:row;justify-content:space-between;width:100%}.assignments-history{padding:20px}.assignments-history h2{font-size:20px}}@media only screen and (max-width:600px){.history-header h1{font-size:20px}.stat-card{padding:15px}.stat-icon{height:40px;width:40px}.stat-value{font-size:20px}.assignment-title{font-size:16px}.assignment-number{font-size:16px;height:40px;width:40px}.score-circle{height:80px;width:80px}.percentage{font-size:20px}.grade-letter{font-size:14px}}.hwv-page{--hwv-ok:#4ade80;--hwv-ok-bg:#22c55e24;--hwv-bad:#f87171;--hwv-bad-bg:#ef44441f;--hwv-mid:#fbbf24;--hwv-mid-bg:#f59e0b24;--hwv-accent:#93c5fd;--hwv-accent-bg:#2563eb2e;--hwv-accent-border:#60a5fa8c;--hwv-soft:#94a3b81f;background:var(--bg-main);color:var(--text-main);font-family:Inter,-apple-system,sans-serif;font-family:var(--font-body,"Inter",-apple-system,sans-serif);min-height:100vh;overflow-x:clip;width:100%}:root[data-theme=light] .hwv-page{--hwv-ok:#15803d;--hwv-ok-bg:#16a34a1a;--hwv-bad:#dc2626;--hwv-bad-bg:#dc262614;--hwv-mid:#b45309;--hwv-mid-bg:#d977061a;--hwv-accent:#1d4ed8;--hwv-accent-bg:#2563eb14;--hwv-accent-border:#2563eb59;--hwv-soft:#0f172a0d}.hwv-btn{align-items:center;background:#0000;border:1px solid var(--border-dark);border-radius:8px;color:var(--text-muted);cursor:pointer;display:inline-flex;font-family:inherit;font-size:12.5px;font-weight:650;gap:6px;line-height:1.2;padding:6px 10px;transition:background .15s ease,border-color .15s ease,color .15s ease;white-space:nowrap}.hwv-btn:hover:not(:disabled){background:var(--hwv-soft);border-color:var(--fixed-400);color:var(--text-main)}.hwv-btn:disabled{cursor:not-allowed;opacity:.45}.hwv-btn:focus-visible,.hwv-chip-stat.is-button:focus-visible,.hwv-people-toggle:focus-visible,.hwv-person-link:focus-visible,.hwv-select:focus-visible{outline:2px solid #60a5fa;outline-offset:2px}.hwv-btn.is-on{background:var(--hwv-accent-bg);border-color:var(--hwv-accent-border);color:var(--hwv-accent)}.hwv-btn.is-primary{background:#2563eb;border-color:#2563eb;color:#fff}.hwv-btn.is-primary:hover:not(:disabled){background:#1d4ed8;border-color:#1d4ed8;color:#fff}.hwv-icon-btn{padding:6px 8px}.hwv-btn-close:hover:not(:disabled){background:var(--hwv-bad-bg);border-color:var(--hwv-bad);color:var(--hwv-bad)}.hwv-spin{animation:hwv-spin .9s linear infinite}@keyframes hwv-spin{to{transform:rotate(1turn)}}.hwv-chev{flex-shrink:0;transform:rotate(-90deg);transition:transform .2s ease}.hwv-expl-toggle.is-open .hwv-chev,.is-open>.hwv-chev{transform:rotate(0deg)}.hwv-topbar{background:var(--bg-card);border-bottom:1px solid var(--border-dark);box-shadow:0 2px 14px rgba(0,0,0,calc(var(--shadow-k)*.18));position:-webkit-sticky;position:sticky;top:0;z-index:30}.hwv-topbar-row{align-items:center;display:flex;flex-wrap:wrap;gap:8px 14px;padding:8px 16px}.hwv-title-block{flex:1 1 240px;gap:10px;min-width:0}.hwv-hw-badge,.hwv-title-block{align-items:center;display:flex}.hwv-hw-badge{background:#2563eb33;border-radius:10px;color:var(--fg-blue-400);flex-shrink:0;height:34px;justify-content:center;width:34px}.hwv-title-text{min-width:0}.hwv-title{color:var(--text-main);font-size:16px;font-weight:800;line-height:1.25;margin:0}.hwv-meta,.hwv-title{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.hwv-meta{color:var(--text-subtle);font-size:12px}.hwv-summary{align-items:center;display:flex;flex-wrap:wrap;gap:6px}.hwv-chip-stat{align-items:center;background:var(--hwv-soft);border:1px solid var(--border-dark);border-radius:999px;color:var(--text-muted);display:inline-flex;font-family:inherit;font-size:12px;font-weight:650;gap:5px;line-height:1.3;padding:4px 10px;white-space:nowrap}.hwv-chip-stat strong{color:var(--text-main);font-weight:800}.hwv-chip-stat.tone-good strong{color:var(--hwv-ok)}.hwv-chip-stat.tone-mid strong{color:var(--hwv-mid)}.hwv-chip-stat.tone-bad strong{color:var(--hwv-bad)}.hwv-chip-stat.is-button{cursor:pointer}.hwv-chip-stat.is-button:hover:not(:disabled){border-color:var(--fixed-400)}.hwv-chip-stat.is-button:disabled{cursor:default;opacity:.7}.hwv-controls{display:flex;flex-wrap:wrap;margin-left:auto}.hwv-controls,.hwv-sort{align-items:center;gap:6px}.hwv-sort{color:var(--text-subtle);display:inline-flex;font-size:12px;font-weight:650}.hwv-select{background:var(--bg-card);border:1px solid var(--border-dark);border-radius:8px;color:var(--text-main);cursor:pointer;font-family:inherit;font-size:12.5px;font-weight:600;max-width:100%;padding:5px 8px}.hwv-notstarted{align-items:center;border-top:1px solid var(--border-dark);display:flex;flex-wrap:wrap;gap:6px;max-height:30vh;overflow-y:auto;padding:8px 16px 10px}.hwv-notstarted-label{color:var(--text-subtle);font-size:12px;font-weight:800;margin-right:2px}.hwv-person-plain{background:var(--hwv-soft);border:1px solid var(--border-dark);border-radius:999px;color:var(--text-main);display:inline-flex;font-size:12px;font-weight:600;padding:3px 10px}.hwv-main{display:flex;flex-direction:column;gap:18px;margin:0 auto;max-width:1040px;padding:20px 16px 64px}.hwv-banner{background:var(--hwv-soft);border:1px dashed var(--border-dark);border-radius:10px;color:var(--text-muted);font-size:13.5px;font-weight:600;padding:10px 14px}.hwv-state{align-items:center;display:flex;flex-direction:column;gap:12px;justify-content:center;min-height:80vh;padding:24px 16px;text-align:center}.hwv-state.is-inline{min-height:40vh}.hwv-state h2{color:var(--text-main);font-size:19px;font-weight:800;margin:0}.hwv-state p{color:var(--text-subtle);font-size:14px;margin:0;max-width:460px}.hwv-state-actions{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:6px}.hwv-card{background:var(--bg-card);border:1px solid var(--border-dark);border-radius:14px;box-shadow:0 4px 14px rgba(0,0,0,calc(var(--shadow-k)*.16));overflow:hidden;scroll-margin-top:130px}.hwv-card-head{border-bottom:1px solid var(--border-dark);flex-wrap:wrap;gap:8px 12px;padding:10px 14px}.hwv-card-head,.hwv-card-title{align-items:center;display:flex}.hwv-card-title{flex:1 1 auto;flex-wrap:wrap;gap:6px 8px;min-width:0}.hwv-qnum{color:var(--text-main);font-size:15px;font-weight:800;margin-right:2px}.hwv-tag{background:var(--hwv-soft);border-radius:999px;color:var(--text-muted);font-size:11.5px;font-weight:700;padding:2px 8px;white-space:nowrap}.hwv-card-present{margin-left:4px}.hwv-stats{align-items:center;display:flex;flex-wrap:wrap;font-size:12.5px;font-weight:700;gap:6px 10px;margin-left:auto}.hwv-stats.is-empty{color:var(--text-subtle);font-style:italic;font-weight:600}.hwv-stat{font-feature-settings:"tnum";font-variant-numeric:tabular-nums;white-space:nowrap}.hwv-stat.ok{color:var(--hwv-ok)}.hwv-stat.bad{color:var(--hwv-bad)}.hwv-stat.skip{color:var(--text-subtle);font-weight:600}.hwv-stats-bar{background:#94a3b840;border-radius:999px;display:flex;height:6px;overflow:hidden;width:96px}.hwv-stats-bar>span{height:100%;transition:width .3s ease}.hwv-stats-bar .seg-ok{background:#22c55e}.hwv-stats-bar .seg-bad{background:#ef4444}.hwv-stats-bar .seg-skip{background:#94a3b8;opacity:.6}.hwv-stats-pct{font-feature-settings:"tnum";border-radius:999px;font-variant-numeric:tabular-nums;font-weight:800;padding:2px 9px;white-space:nowrap}.hwv-stats-pct.tone-good{background:var(--hwv-ok-bg);color:var(--hwv-ok)}.hwv-stats-pct.tone-mid{background:var(--hwv-mid-bg);color:var(--hwv-mid)}.hwv-stats-pct.tone-bad{background:var(--hwv-bad-bg);color:var(--hwv-bad)}.hwv-stats-pct.tone-none{color:var(--text-subtle);font-weight:600;padding-left:0}.hwv-paper{--text:#0f172a;--text-main:#0f172a;--text-muted:#475569;--surface:#fff;--surface-muted:#f1f5f9;--border-light:#e2e8f0;--border-color:#cbd5e1;--text-main-lighter:#e2e8f0;--text-main-light:#f1f5f9;background:var(--bg-ffffff);color:var(--fg-0f172a);padding:18px 22px 20px}.hwv-paper .question-html-clean,.hwv-paper .question-html-clean *,.hwv-paper .question-html-clean .katex,.hwv-paper .question-html-clean .katex *{color:var(--fg-0f172a)!important}.hwv-paper span.question-html-clean,.hwv-paper span.question-html-clean *,.hwv-paper span.question-html-clean .katex *{color:#0f172a!important}.hwv-paper .hwv-accepted-chip.question-html-clean{background:#f0fdf4!important;border-color:#86efac;border-radius:999px!important}.hwv-paper .hwv-accepted-chip.question-html-clean,.hwv-paper .hwv-accepted-chip.question-html-clean *{color:#15803d!important}.hwv-paper .hwv-common-chip{background:#fef2f2;border-color:#fecaca}.hwv-paper .hwv-common-chip span.question-html-clean{background:#0000!important}.hwv-paper .hwv-common-chip small,.hwv-paper .hwv-common-chip span.question-html-clean{color:#b91c1c!important}.hwv-paper .hwv-qtext{font-size:17px;line-height:1.65}.hwv-qpic{margin-bottom:12px;text-align:center}.hwv-qpic img{border:1px solid var(--line-e2e8f0);border-radius:8px;margin:0 auto;max-height:320px;max-width:100%}.hwv-paper-note{color:var(--fg-64748b);font-size:13px;font-style:italic;margin:10px 0 0}.hwv-choices{display:flex;flex-direction:column;gap:8px;margin-top:14px}.hwv-choices.is-graph-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr))}.hwv-choice{align-items:center;background:var(--bg-ffffff);border:1.5px solid var(--line-cbd5e1);border-radius:8px;display:flex;gap:12px;min-width:0;overflow:hidden;padding:9px 14px;position:relative}.hwv-choice>:not(.hwv-choice-fill){position:relative;z-index:1}.hwv-choice-fill{background:#2563eb17;bottom:0;left:0;pointer-events:none;position:absolute;top:0;transition:width .3s ease;z-index:0}.hwv-choices.is-revealed .hwv-choice:not(.is-correct) .hwv-choice-fill{background:#dc262614}.hwv-choice.is-correct{background:var(--bg-f0fdf4);border-color:#16a34a;box-shadow:inset 0 0 0 1px #16a34a}.hwv-choice.is-correct .hwv-choice-fill{background:#16a34a29}.hwv-choice-badge{align-items:center;background:var(--bg-ffffff);border:1.5px solid var(--line-0f172a);border-radius:50%;color:var(--fg-0f172a);display:flex;flex:0 0 auto;font-size:14px;font-weight:800;height:28px;justify-content:center;width:28px}.hwv-choice.is-correct .hwv-choice-badge{background:#16a34a;border-color:#16a34a;color:#fff}.hwv-paper .hwv-choice-text{flex:1 1 auto;font-size:16px;min-width:0;padding:0}.hwv-paper .hwv-choice-text p{margin:0}.hwv-choice-graph{display:flex;flex:1 1 auto;justify-content:center;min-width:0}.hwv-choice-graph img{margin:0 auto;max-height:180px;max-width:100%}.hwv-choice.is-graph{flex-wrap:wrap}.hwv-choice-check{color:var(--fg-15803d)}.hwv-choice-check,.hwv-choice-count{flex:0 0 auto;font-size:12.5px;font-weight:800;white-space:nowrap}.hwv-choice-count{font-feature-settings:"tnum";background:var(--bg-f8fafc);border:1px solid var(--line-e2e8f0);border-radius:999px;color:var(--fg-1e293b);font-variant-numeric:tabular-nums;padding:2px 8px}.hwv-choice-count small{color:var(--fg-64748b);font-size:11.5px;font-weight:600}.hwv-answer-note{align-items:center;background:var(--bg-f0fdf4);border:1px solid var(--line-bbf7d0);border-radius:8px;color:var(--fg-14532d);display:flex;flex-wrap:wrap;font-size:14px;gap:6px 8px;margin-top:12px;padding:9px 14px}.hwv-answer-note .question-html-clean{font-size:15px;padding:0}.hwv-answer-note-pic{border-radius:6px;max-height:160px}.hwv-spr-label{color:var(--fg-64748b);font-size:11.5px;font-weight:800;letter-spacing:.06em;margin-top:14px;text-transform:uppercase}.hwv-accepted,.hwv-common-wrong{align-items:center;display:flex;flex-wrap:wrap;gap:6px 8px;margin-top:8px}.hwv-accepted-label,.hwv-common-label{font-size:12px;font-weight:800;margin-right:2px}.hwv-accepted-label{color:var(--fg-15803d)}.hwv-common-label{color:var(--fg-b91c1c)}.hwv-paper .hwv-accepted-chip{background:var(--bg-f0fdf4);border:1px solid var(--line-86efac);border-radius:999px;display:inline-flex;font-size:14.5px;font-weight:700;padding:3px 12px}.hwv-common-chip{align-items:center;background:var(--bg-fef2f2);border:1px solid var(--line-fecaca);border-radius:999px;display:inline-flex;font-size:14px;gap:6px;padding:3px 10px}.hwv-common-chip .question-html-clean{font-size:14px;padding:0}.hwv-common-chip small{color:var(--fg-b91c1c);font-size:11.5px;font-weight:800}.hwv-expl{border-top:1px dashed var(--line-cbd5e1);margin-top:14px;padding-top:10px}.hwv-expl-toggle{align-items:center;background:none;border:none;color:var(--fg-1d4ed8);cursor:pointer;display:inline-flex;font-family:inherit;font-size:13.5px;font-weight:700;gap:6px;padding:4px 0}.hwv-expl-toggle:hover{text-decoration:underline}.hwv-expl-body{background:var(--bg-f8fafc);border:1px solid var(--line-e2e8f0);border-radius:8px;margin-top:8px;padding:10px 14px}.hwv-expl-pic{border-radius:8px;margin:10px auto 0;max-height:320px;max-width:100%}.hwv-people{border-top:1px solid var(--border-dark);display:flex;flex-direction:column;gap:10px;padding:12px 14px 14px}.hwv-people-toggle{align-items:center;background:none;border:none;color:var(--text-main);cursor:pointer;display:inline-flex;font-family:inherit;font-size:13px;font-weight:800;gap:6px;padding:2px 0}.hwv-people-toggle.tone-wrong{color:var(--hwv-bad)}.hwv-people-toggle.tone-skip{color:var(--text-subtle)}.hwv-people-toggle.tone-right{color:var(--hwv-ok)}.hwv-people-list{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.hwv-people-note{color:var(--hwv-ok);font-size:13px;font-weight:650;margin:0}.hwv-person{align-items:center;background:var(--hwv-soft);border:1px solid var(--border-dark);border-radius:999px;display:inline-flex;font-size:12.5px;max-width:100%;min-width:0;overflow:hidden}.hwv-person.tone-wrong{background:var(--hwv-bad-bg);border-color:#ef444466}.hwv-person.tone-right{background:var(--hwv-ok-bg);border-color:#22c55e59}.hwv-person-link{align-items:center;border-radius:999px;color:var(--text-main);display:inline-flex;gap:7px;min-width:0;padding:4px 11px;text-decoration:none}.hwv-person-name{font-weight:700;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.hwv-person-link:hover .hwv-person-name{text-decoration:underline}.hwv-person-answer{align-items:center;color:var(--hwv-bad);display:inline-flex;font-size:12px;font-weight:700;gap:4px;max-width:240px;min-width:0;overflow:hidden;white-space:nowrap}.hwv-person-answer.is-blank{color:var(--text-subtle);font-style:italic;font-weight:600}.hwv-person-answer-text{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.hwv-person-answer-text div,.hwv-person-answer-text p{display:inline;margin:0}.hwv-person-answer-text br{display:none}.hwv-person-answer .katex{font-size:1em}.hwv-person-answer img{background:var(--bg-ffffff);border-radius:4px;display:inline-block;max-height:28px;width:auto}.hwv-person-letter{border:1px solid;border-radius:50%;flex-shrink:0;font-size:10.5px;font-weight:800;height:18px;justify-content:center;width:18px}.hwv-person-letter,.hwv-person-steps{align-items:center;display:inline-flex}.hwv-person-steps{color:var(--text-subtle);padding:4px 10px 4px 2px}.hwv-person-steps:hover{color:var(--text-main)}.hwv-page.is-present .hwv-main{max-width:1180px;padding-bottom:110px}.hwv-page.is-present .hwv-card{box-shadow:0 10px 32px rgba(0,0,0,calc(var(--shadow-k)*.25))}.hwv-page.is-present .hwv-qnum{font-size:20px}.hwv-page.is-present .hwv-paper{padding:28px 36px 30px}.hwv-page.is-present .hwv-paper .hwv-qtext{font-size:22px;line-height:1.6}.hwv-page.is-present .hwv-qpic img{max-height:420px}.hwv-page.is-present .hwv-choices{gap:10px;margin-top:20px}.hwv-page.is-present .hwv-choice{padding:12px 18px}.hwv-page.is-present .hwv-paper .hwv-choice-text{font-size:19px}.hwv-page.is-present .hwv-choice-badge{font-size:16px;height:34px;width:34px}.hwv-page.is-present .hwv-choice-count{font-size:14px}.hwv-page.is-present .hwv-choice-graph img{max-height:240px}.hwv-present-nav{align-items:center;background:var(--bg-card);border:1px solid var(--border-dark);border-radius:999px;bottom:16px;box-shadow:0 10px 30px rgba(0,0,0,calc(var(--shadow-k)*.35));display:flex;gap:8px;left:50%;max-width:calc(100vw - 32px);padding:8px 10px;position:fixed;transform:translateX(-50%);z-index:40}.hwv-present-nav .hwv-btn{border-radius:999px;font-size:13.5px;padding:7px 14px}.hwv-present-counter{font-feature-settings:"tnum";color:var(--text-main);font-size:15px;font-variant-numeric:tabular-nums;font-weight:800;min-width:64px;text-align:center}@media (max-width:900px){.hwv-controls{margin-left:0}}@media (max-width:720px){.hwv-topbar{position:relative}.hwv-card{scroll-margin-top:12px}.hwv-main{gap:14px;padding:14px 12px 56px}.hwv-card-present{order:1}.hwv-stats{margin-left:0;order:2;width:100%}.hwv-paper{padding:14px 14px 16px}.hwv-paper .hwv-qtext{font-size:16px}.hwv-choice{gap:10px;padding:8px 10px}.hwv-person-answer{max-width:150px}.hwv-page.is-present .hwv-paper{padding:18px 16px 20px}.hwv-page.is-present .hwv-paper .hwv-qtext{font-size:18px}.hwv-page.is-present .hwv-paper .hwv-choice-text{font-size:16.5px}.hwv-present-nav{bottom:10px;gap:4px;padding:6px}.hwv-present-nav .hwv-btn{padding:7px 10px}}.parent-portal-page{background-color:var(--bg-main);color:var(--text-main-light);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;min-height:100vh;padding-bottom:60px}.parent-portal-container{margin:0 auto;max-width:1380px;padding:30px 24px}.parent-header-card{align-items:center;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:linear-gradient(135deg,rgba(var(--glass-800),.7) 0,rgba(var(--glass-900),.85) 100%);border:1px solid rgba(var(--hairline),.08);border-radius:18px;box-shadow:0 10px 30px -10px rgba(0,0,0,calc(var(--shadow-k)*.5));display:flex;justify-content:space-between;margin-bottom:28px;padding:26px 32px}.parent-role-badge{align-items:center;background:#3b82f626;border:1px solid #3b82f64d;border-radius:999px;color:var(--accent-light);display:inline-flex;font-size:.82rem;font-weight:600;gap:6px;margin-bottom:10px;padding:4px 12px}.parent-header-card h1{font-size:1.85rem;font-weight:800;letter-spacing:-.02em;margin:0 0 6px}.parent-name-highlight{-webkit-text-fill-color:#0000;background:linear-gradient(135deg,var(--accent-light) 0,var(--fg-violet-400) 100%);-webkit-background-clip:text}.parent-header-subtitle{color:var(--text-subtle);font-size:.95rem;margin:0}.parent-refresh-btn{align-items:center;background:rgba(var(--hairline),.06);border:1px solid rgba(var(--hairline),.12);border-radius:10px;color:var(--text-muted);cursor:pointer;display:inline-flex;font-size:.9rem;font-weight:500;gap:8px;padding:9px 18px;transition:all .2s ease}.parent-refresh-btn:hover{background:rgba(var(--hairline),.12);border-color:rgba(var(--hairline),.25);color:var(--text-main)}.spinning{animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}.parent-empty-card,.parent-error-card,.parent-loading-state{background:rgba(var(--glass-900),.6);border:1px solid rgba(var(--hairline),.06);border-radius:16px;margin-top:20px;padding:60px 20px;text-align:center}.portal-spinner{animation:spin .8s linear infinite;border:3px solid #3b82f633;border-radius:50%;border-top:3px solid var(--accent-hover);height:40px;margin:0 auto 16px;width:40px}.parent-empty-card .empty-icon{color:var(--fg-475569);margin-bottom:16px}.parent-empty-card h2{color:var(--text-main-lighter);font-size:1.4rem;margin-bottom:8px}.parent-empty-card p{color:var(--text-subtle);line-height:1.5;margin:0 auto;max-width:500px}.parent-dashboard-grid{grid-gap:24px;align-items:start;display:grid;gap:24px;grid-template-columns:310px 1fr}.children-sidebar{background:rgba(var(--glass-900),.7);border:1px solid rgba(var(--hairline),.08);border-radius:16px;padding:18px}.sidebar-section-title{align-items:center;border-bottom:1px solid rgba(var(--hairline),.06);color:var(--text-subtle);display:flex;font-size:.85rem;font-weight:700;gap:8px;letter-spacing:.05em;margin-bottom:14px;padding-bottom:14px;text-transform:uppercase}.children-list{display:flex;flex-direction:column;gap:10px}.child-card-pill{align-items:flex-start;background:rgba(var(--glass-800),.4);border:1px solid rgba(var(--hairline),.05);border-radius:12px;cursor:pointer;display:flex;gap:12px;padding:14px;transition:all .2s ease}.child-card-pill:hover{background:rgba(var(--glass-800),.7);border-color:#6366f14d}.child-card-pill.active{background:linear-gradient(135deg,#3b82f626,#6366f11f);border:1px solid #3b82f680;box-shadow:0 4px 14px #3b82f61f}.child-card-avatar{align-items:center;background:var(--accent-primary);border-radius:10px;color:var(--fixed-50);display:flex;flex-shrink:0;font-size:1.1rem;font-weight:700;height:40px;justify-content:center;width:40px}.child-card-info{flex:1 1;min-width:0}.child-name-row{align-items:center;display:flex;justify-content:space-between;margin-bottom:2px}.child-name{color:var(--text-main);font-size:.95rem;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.viewing-badge{background:var(--accent-hover);border-radius:999px;color:var(--fixed-50);font-size:.7rem;font-weight:600;padding:2px 7px}.child-class-name{color:var(--text-subtle);display:block;font-size:.8rem;margin-bottom:8px}.child-quick-stats{display:flex;flex-wrap:wrap;gap:6px}.stat-pill-sm{align-items:center;background:#10b9811f;border:1px solid #10b98140;border-radius:6px;color:var(--fg-emerald-400);display:inline-flex;font-size:.75rem;font-weight:600;gap:4px;padding:2px 8px}.stat-pill-sm.mistakes{background:#ef44441f;border-color:#ef444440;color:var(--fg-red-400)}.child-detail-content{background:rgba(var(--glass-900),.7);border:1px solid rgba(var(--hairline),.08);border-radius:16px;padding:24px}.active-child-banner{margin-bottom:24px}.active-child-headline{align-items:center;display:flex;flex-wrap:wrap;gap:12px;margin-bottom:18px}.active-child-headline h2{font-size:1.5rem;font-weight:700;margin:0}.child-email-tag{background:rgba(var(--hairline),.06);border-radius:6px;color:var(--text-muted);font-size:.85rem;padding:4px 10px}.child-badge-tag{background:#a855f726;border:1px solid #a855f74d;border-radius:6px;color:var(--accent-text);font-size:.85rem;font-weight:600;padding:4px 10px}.child-metrics-row{grid-gap:16px;display:grid;gap:16px;grid-template-columns:repeat(3,1fr)}.metric-box{background:rgba(var(--glass-800),.4);border:1px solid rgba(var(--hairline),.06);border-radius:12px;gap:14px;padding:16px}.metric-box,.metric-icon-wrap{align-items:center;display:flex}.metric-icon-wrap{border-radius:10px;height:44px;justify-content:center;width:44px}.metric-icon-wrap.primary{background:#3b82f626;color:var(--accent-light)}.metric-icon-wrap.success{background:#10b98126;color:var(--fg-emerald-400)}.metric-icon-wrap.warning{background:#ef444426;color:var(--fg-red-400)}.metric-text{display:flex;flex-direction:column}.metric-label{color:var(--text-subtle);font-size:.8rem;font-weight:500}.metric-value{color:var(--text-main);font-size:1.35rem;font-weight:800}.child-detail-tabs{border-bottom:1px solid rgba(var(--hairline),.08);display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px;padding-bottom:12px}.tab-btn{align-items:center;background:none;border:none;border-radius:10px;color:var(--text-subtle);cursor:pointer;display:inline-flex;font-size:.95rem;font-weight:600;gap:8px;padding:10px 18px;transition:all .2s ease}.tab-btn:hover{background:rgba(var(--hairline),.05);color:var(--text-main-light)}.tab-btn.active{background:#3b82f626;border:1px solid #3b82f64d;color:var(--accent-light)}.empty-tab-state,.tab-loading-state{color:var(--text-subtle);padding:48px 20px;text-align:center}.empty-tab-state h4{color:var(--text-main-lighter);font-size:1.15rem;margin:12px 0 6px}.empty-tab-state p{font-size:.9rem;line-height:1.4;margin:0 auto;max-width:440px}.assignments-table-wrapper{border:1px solid rgba(var(--hairline),.06);border-radius:12px;overflow-x:auto}.parent-data-table{border-collapse:collapse;font-size:.92rem;text-align:left;width:100%}.parent-data-table th{background:rgba(var(--glass-800),.6);border-bottom:1px solid rgba(var(--hairline),.08);color:var(--text-subtle);font-weight:600;padding:14px 18px}.parent-data-table td{border-bottom:1px solid rgba(var(--hairline),.04);color:var(--text-muted);padding:14px 18px}.parent-data-table tr:hover td{background:rgba(var(--hairline),.02)}.assign-title-cell{display:flex;flex-direction:column}.assign-title-text{color:var(--text-main);font-weight:600}.assign-total-points{color:var(--text-dim);font-size:.78rem;margin-top:2px}.score-badge{border-radius:6px;display:inline-block;font-size:.85rem;font-weight:700;padding:4px 10px}.score-badge.high-score{background:#10b98126;border:1px solid #10b9814d;color:var(--fg-emerald-400)}.score-badge.mid-score{background:#eab30826;border:1px solid #eab3084d;color:var(--fg-yellow-400)}.score-badge.low-score{background:#ef444426;border:1px solid #ef44444d;color:var(--fg-red-400)}.best-score-text{color:var(--fg-sky-400);font-weight:600}.attempts-pill{background:rgba(var(--hairline),.06);border-radius:6px;font-size:.8rem;padding:3px 8px}.date-cell{color:var(--text-subtle);font-size:.85rem}.mistakes-grid{display:flex;flex-direction:column;gap:16px}.parent-mistake-card{background:rgba(var(--glass-800),.4);border:1px solid rgba(var(--hairline),.06);border-left:4px solid #ef4444;border-radius:12px;padding:18px 20px}.mistake-card-top{align-items:center;display:flex;justify-content:space-between;margin-bottom:12px}.mistake-idx{color:var(--fg-red-400);font-size:.8rem;font-weight:700;letter-spacing:.05em;text-transform:uppercase}.mistake-source-tag{background:rgba(var(--hairline),.06);border-radius:6px;color:var(--text-subtle);font-size:.78rem;padding:3px 9px}.mistake-question-body{color:var(--text-main-lighter);font-size:.96rem;line-height:1.6;margin-bottom:12px}.mistake-image-preview{margin:12px 0;max-width:100%}.mistake-image-preview img{border:1px solid rgba(var(--hairline),.1);border-radius:8px;max-height:260px;max-width:100%}.mistake-correct-banner{align-items:center;background:#10b9811a;border:1px solid #10b98140;border-radius:8px;color:var(--fg-emerald-400);display:flex;font-size:.9rem;gap:8px;margin-bottom:10px;padding:10px 14px}.mistake-explanation-box{background:rgba(var(--glass-900),.5);border:1px solid rgba(var(--hairline),.05);border-radius:8px;color:var(--text-muted);font-size:.88rem;line-height:1.5;padding:12px 14px}.explanation-label{color:var(--text-subtle);display:block;font-size:.78rem;font-weight:700;letter-spacing:.04em;margin-bottom:4px;text-transform:uppercase}@media (max-width:900px){.child-metrics-row,.parent-dashboard-grid{grid-template-columns:1fr}.parent-header-card{align-items:flex-start;flex-direction:column;gap:16px}}@media (min-width:769px){.parent-portal-container{padding-top:95px}}.cp-md{color:inherit;font-size:.9rem;line-height:1.6;min-width:0;overflow-wrap:anywhere}.cp-md>:first-child{margin-top:0}.cp-md>:last-child{margin-bottom:0}.cp-md p{margin:0 0 .6em}.cp-md h4,.cp-md h5{color:inherit;font-weight:700;line-height:1.35;margin:.9em 0 .35em}.cp-md h4{font-size:1rem}.cp-md h5{font-size:.92rem}.cp-md strong{font-weight:650}.cp-md ol,.cp-md ul{margin:.2em 0 .7em;padding-inline-start:1.35em}.cp-md li{margin:.2em 0}.cp-md li>ol,.cp-md li>ul{margin:.15em 0 .25em}.cp-md li::marker{color:var(--cp-muted)}.cp-md a{color:var(--cp-link);text-decoration:underline;text-underline-offset:2px}.cp-md code{border-radius:5px;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.85em;padding:.1em .35em}.cp-md code,.cp-md pre{background:var(--cp-code)}.cp-md pre{border-radius:8px;margin:.4em 0 .8em;overflow-x:auto;padding:10px 12px}.cp-md pre code{background:none;font-size:.82rem;padding:0}.cp-md blockquote{border-inline-start:3px solid var(--cp-line);color:var(--cp-text-soft);margin:.4em 0 .8em;padding:2px 0 2px 12px}.cp-md hr{border:0;border-top:1px solid var(--cp-line);margin:.9em 0}.cp-md-table{margin:.4em 0 .8em;overflow-x:auto}.cp-md table{border-collapse:collapse;font-size:.84rem;min-width:60%}.cp-md td,.cp-md th{border-bottom:1px solid var(--cp-line);padding:5px 10px;text-align:start}.cp-md th{color:var(--cp-text-soft);font-weight:650}.cp-md .katex{direction:ltr;font-size:1.05em;unicode-bidi:isolate}.cp-md .katex-display{direction:ltr;margin:.5em 0 .8em;max-width:100%;overflow-x:auto;overflow-y:hidden;padding:4px 0}.cp-md .katex-display>.katex{font-size:1.12em}.cp-md .katex-error{color:inherit!important;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.85em}.cp-md.on-accent a,.cp-md.on-accent li::marker{color:inherit}.cp-md.on-accent code,.cp-md.on-accent pre{background:#ffffff2e}.ai-copilot-trigger-wrapper{align-items:center;display:flex;position:fixed;touch-action:none;-webkit-user-select:none;user-select:none;z-index:9999}.ai-copilot-trigger-wrapper.dragging{cursor:grabbing}.ai-copilot-trigger{align-items:center;background:var(--accent-primary);border:none;border-radius:9999px;box-shadow:0 8px 22px -6px #2e6be68c;color:#fff;cursor:grab;display:flex;font-family:inherit;font-size:14px;font-weight:600;gap:8px;padding:11px 18px 11px 15px;transition:transform .2s cubic-bezier(.16,1,.3,1),box-shadow .2s ease;white-space:nowrap}.ai-copilot-trigger:hover{box-shadow:0 12px 26px -6px #2e6be6a6;transform:translateY(-2px)}.ai-copilot-trigger:active{cursor:grabbing;transform:scale(.98)}.trigger-close-badge{align-items:center;background:var(--cp-window);border:1px solid var(--cp-line);border-radius:50%;box-shadow:0 2px 6px var(--cp-shadow);color:var(--cp-muted);cursor:pointer;display:flex;height:20px;justify-content:center;opacity:0;position:absolute;right:-6px;top:-6px;transition:opacity .15s ease,background .15s ease,color .15s ease;width:20px;z-index:2}.ai-copilot-trigger-wrapper:hover .trigger-close-badge,.trigger-close-badge:focus-visible{opacity:1}@media (hover:none){.trigger-close-badge{opacity:1}}.trigger-close-badge:hover{background:#ef4444;border-color:#dc2626;color:#fff}.acd-restore-pill{align-items:center;background:var(--accent-primary);border:none;border-radius:999px;bottom:24px;box-shadow:0 6px 16px #2e6be666;color:#fff;cursor:pointer;font-size:12px;font-weight:700;gap:6px;padding:8px 13px;right:24px;z-index:9999}.acd-restore-pill,.ai-copilot-drawer{display:flex;font-family:inherit;position:fixed}.ai-copilot-drawer{animation:acd-appear .25s cubic-bezier(.16,1,.3,1);background:var(--cp-window);border:1px solid var(--cp-line);border-radius:18px;box-shadow:0 24px 48px -12px var(--cp-shadow);color:var(--cp-text);flex-direction:column;height:640px;max-height:calc(100vh - 48px);max-width:calc(100vw - 32px);overflow:hidden;transition:width .25s cubic-bezier(.16,1,.3,1),height .25s cubic-bezier(.16,1,.3,1);width:420px;z-index:10000}.ai-copilot-drawer.is-dragging{transition:none;-webkit-user-select:none;user-select:none}.ai-copilot-drawer.expanded{height:820px;width:720px}@keyframes acd-appear{0%{opacity:0;transform:translateY(14px) scale(.98)}to{opacity:1;transform:none}}.acd-header{align-items:center;border-bottom:1px solid var(--cp-line);cursor:grab;display:flex;gap:8px;justify-content:space-between;padding:10px 10px 10px 14px;touch-action:none;-webkit-user-select:none;user-select:none}.ai-copilot-drawer.is-dragging .acd-header{cursor:grabbing}.acd-header-brand{align-items:center;display:flex;gap:10px;min-width:0}.acd-header-icon{align-items:center;background:var(--accent-primary);border-radius:9px;color:#fff;display:flex;flex-shrink:0;height:30px;justify-content:center;width:30px}.acd-header-title{font-size:.95rem;font-weight:650;white-space:nowrap}.acd-header-actions{gap:2px}.acd-header-actions,.acd-icon-btn{align-items:center;display:flex;flex-shrink:0}.acd-icon-btn{background:#0000;border:none;border-radius:8px;color:var(--cp-muted);cursor:pointer;height:32px;justify-content:center;transition:background .15s ease,color .15s ease;width:32px}.acd-icon-btn.is-active,.acd-icon-btn:hover:not(:disabled){background:var(--cp-hover);color:var(--cp-text)}.acd-icon-btn:disabled{cursor:default;opacity:.4}.acd-icon-btn.is-close:hover{background:#ef444424;color:var(--fg-red-400)}.acd-settings{background:var(--cp-header);border-bottom:1px solid var(--cp-line);display:flex;flex-direction:column;gap:10px;padding:14px 16px}.acd-settings-title{font-size:.88rem;font-weight:650}.acd-settings-desc{color:var(--cp-muted);font-size:.8rem;line-height:1.5;margin:0}.acd-settings-desc a{color:var(--cp-link)}.acd-key-input{background:var(--cp-window);border:1px solid var(--cp-line);border-radius:9px;box-sizing:border-box;color:var(--cp-text);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.82rem;outline:none;padding:9px 12px;width:100%}.acd-key-input:focus{border-color:var(--cp-chip-line);box-shadow:0 0 0 3px var(--cp-chip)}.acd-settings-actions{display:flex;gap:8px}.acd-btn{background:#0000;border:1px solid var(--cp-line);border-radius:8px;color:var(--cp-text);cursor:pointer;font-family:inherit;font-size:.82rem;font-weight:600;padding:7px 14px}.acd-btn.is-primary{background:var(--accent-primary);border-color:#0000;color:#fff}.acd-settings-note{color:var(--cp-muted);font-size:.76rem}.acd-messages{flex:1 1;gap:18px;overflow-y:auto;padding:18px 16px 8px;scrollbar-width:thin}.acd-empty,.acd-messages{display:flex;flex-direction:column}.acd-empty{align-items:center;margin:auto 0;padding:8px 4px;text-align:center}.acd-empty-icon{align-items:center;background:var(--cp-chip);border-radius:12px;color:var(--cp-link);display:flex;height:40px;justify-content:center;margin-bottom:12px;width:40px}.acd-empty-title{color:var(--cp-text);font-size:1.05rem;font-weight:650;margin:0 0 6px}.acd-empty-text{color:var(--cp-muted);font-size:.84rem;line-height:1.5;margin:0 0 18px;max-width:320px}.acd-suggestions{display:flex;flex-direction:column;gap:6px;width:100%}.acd-suggestion{background:#0000;border:1px solid var(--cp-line);border-radius:10px;color:var(--cp-text-soft);cursor:pointer;font-family:inherit;font-size:.84rem;padding:10px 12px;text-align:start;transition:background .15s ease,border-color .15s ease;width:100%}.acd-suggestion:hover:not(:disabled){background:var(--cp-hover);border-color:var(--cp-chip-line);color:var(--cp-text)}.acd-msg{display:flex;flex-direction:column;min-width:0}.acd-msg.is-user{align-items:flex-end}.acd-msg-body{max-width:100%;min-width:0}.acd-msg.is-user .acd-msg-body{background:var(--accent-primary);border-radius:16px 16px 4px 16px;color:#fff;max-width:85%;padding:8px 13px}.acd-msg.is-ai .acd-msg-body{color:var(--cp-text);padding:0 2px}.acd-msg.is-error .acd-msg-body{background:#ef444414;border:1px solid #ef44444d;border-radius:10px;padding:10px 12px}.acd-msg-image{border-radius:10px;margin-bottom:6px;max-width:220px;overflow:hidden}.acd-msg-image img{display:block;max-height:180px;object-fit:cover;width:100%}.acd-typing{display:flex;gap:4px;padding:6px 2px}.acd-typing span{animation:acd-bounce 1.4s ease-in-out infinite both;background:var(--cp-muted);border-radius:50%;height:6px;width:6px}.acd-typing span:first-child{animation-delay:-.32s}.acd-typing span:nth-child(2){animation-delay:-.16s}@keyframes acd-bounce{0%,80%,to{opacity:.5;transform:scale(.4)}40%{opacity:1;transform:scale(1)}}.acd-cards{display:flex;flex-direction:column;gap:8px;margin-top:10px}.acd-card{background:var(--cp-panel);border:1px solid var(--cp-line);border-radius:12px;padding:12px 14px}.acd-card.is-error{border-color:#ef444459}.acd-card-label{align-items:center;color:var(--cp-muted);display:flex;font-size:.76rem;font-weight:600;gap:6px;margin-bottom:4px}.acd-card-label.is-done{color:var(--fg-emerald-400)}.acd-card.is-error .acd-card-label{color:var(--fg-red-400)}.acd-card-title{color:var(--cp-text);font-size:.9rem;font-weight:650}.acd-card-text{color:var(--cp-text-soft);font-size:.84rem}.acd-card-meta{color:var(--cp-muted);font-size:.78rem;margin-top:3px}.acd-card-btn{align-items:center;background:var(--accent-primary);border:none;border-radius:8px;color:#fff;cursor:pointer;display:inline-flex;font-family:inherit;font-size:.82rem;font-weight:600;gap:6px;margin-top:10px;padding:7px 12px}.acd-card-btn:hover{filter:brightness(1.1)}.acd-results{display:flex;flex-direction:column;margin-top:4px;max-height:260px;overflow-y:auto}.acd-result{border-top:1px solid var(--cp-line);padding:8px 0}.acd-result:first-child{border-top:none}.acd-result-snippet{-webkit-line-clamp:3;-webkit-box-orient:vertical;color:var(--cp-text-soft);display:-webkit-box;font-size:.84rem;line-height:1.5;overflow:hidden}.acd-weak-list{font-size:.82rem;list-style:none;margin:8px 0 0;padding:0}.acd-weak-list li{border-top:1px solid var(--cp-line);display:flex;gap:12px;justify-content:space-between;padding:4px 0}.acd-weak-count{color:var(--fg-red-400);white-space:nowrap}.acd-composer-wrap{padding:8px 12px 12px}.acd-composer{background:var(--cp-panel);border:1px solid var(--cp-line);border-radius:14px;display:flex;flex-direction:column;transition:border-color .15s ease,box-shadow .15s ease}.acd-composer:focus-within{border-color:var(--cp-chip-line);box-shadow:0 0 0 3px var(--cp-chip)}.acd-input{background:#0000;border:none;box-sizing:border-box;color:var(--cp-text);display:block;font-family:inherit;font-size:.9rem;line-height:1.45;max-height:132px;outline:none;overflow-y:auto;padding:11px 14px 4px;resize:none;width:100%}.acd-input::placeholder{color:var(--cp-muted)}.acd-composer-bar{align-items:center;display:flex;gap:4px;padding:4px 6px 6px}.acd-spacer{flex:1 1}.acd-send-btn{align-items:center;background:var(--accent-primary);border:none;border-radius:50%;color:#fff;cursor:pointer;display:flex;flex-shrink:0;height:34px;justify-content:center;transition:opacity .15s ease,transform .15s ease;width:34px}.acd-send-btn:hover:not(:disabled){transform:scale(1.05)}.acd-send-btn:disabled{cursor:default;opacity:.35}.acd-attachment{align-items:center;align-self:flex-start;background:var(--cp-hover);border-radius:10px;display:flex;gap:8px;margin:8px 8px 0;max-width:calc(100% - 16px);padding:4px}.acd-attachment img{border-radius:7px;display:block;flex-shrink:0;height:36px;object-fit:cover;width:36px}.acd-attachment span{color:var(--cp-text-soft);font-size:.78rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.acd-attachment button{align-items:center;background:#0000;border:none;border-radius:6px;color:var(--cp-muted);cursor:pointer;display:flex;flex-shrink:0;height:24px;justify-content:center;width:24px}.acd-attachment button:hover{background:var(--cp-hover);color:var(--cp-text)}@media (max-width:768px){.ai-copilot-drawer{z-index:100000000}.acd-restore-pill{bottom:96px}}@media (max-width:640px){.ai-copilot-trigger{font-size:13px;padding:10px 15px 10px 13px}.ai-copilot-drawer,.ai-copilot-drawer.expanded{border-bottom:none;border-radius:18px 18px 0 0;bottom:0;height:88vh;height:88dvh;left:0!important;max-height:88dvh;max-width:100vw;right:0;top:auto!important;width:100vw}.acd-header{cursor:default}.acd-expand-btn{display:none}.acd-input{font-size:16px}}.copilot-floating-btn{align-items:center;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:var(--accent-primary);border:1px solid #ffffff40;border-radius:999px;bottom:26px;box-shadow:0 10px 25px -5px #2563eb73,0 8px 10px -6px #2563eb4d;color:#fff;display:flex;font-family:inherit;font-size:.95rem;font-weight:600;gap:10px;padding:12px 14px 12px 16px;position:fixed;right:26px;touch-action:none;transition:transform .2s cubic-bezier(.4,0,.2,1),box-shadow .2s ease;user-select:none;-webkit-user-select:none;z-index:9999}.copilot-floating-btn:not(.is-dragging){cursor:grab}.copilot-floating-btn.is-dragging{box-shadow:0 20px 40px -5px #2563eba6!important;cursor:grabbing!important;transform:scale(1.05)!important;transition:none!important}.copilot-floating-btn:hover:not(.is-dragging){border-color:#ffffff80;box-shadow:0 16px 32px -4px #2563eb99;transform:translateY(-2px) scale(1.02)}.copilot-dismiss-btn{align-items:center;background:#00000040;border:1px solid #ffffff26;border-radius:50%;color:#ffffffbf;cursor:pointer;display:inline-flex;flex-shrink:0;height:20px;justify-content:center;margin-left:2px;transition:all .15s ease;width:20px}.copilot-dismiss-btn:hover{background:#ef4444;border-color:#ef4444;color:#fff;transform:scale(1.15)}.copilot-restore-pill{align-items:center;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:var(--cp-inset);border:1px solid var(--cp-chip-line);border-radius:999px;bottom:20px;box-shadow:0 4px 12px rgba(0,0,0,calc(var(--shadow-k)*.25));color:var(--cp-link);cursor:pointer;display:inline-flex;font-size:11.5px;font-weight:700;gap:5px;padding:6px 12px;position:fixed;right:20px;transition:all .2s ease;z-index:9999}.copilot-restore-pill:hover{background:var(--accent-primary);border-color:#60a5fa;color:#fff;transform:scale(1.05)}.copilot-btn-icon-wrapper{align-items:center;display:flex;justify-content:center;position:relative}.copilot-sparkle-icon{animation:pulse-sparkle 2s ease-in-out infinite;color:#fff;height:12px;position:absolute;right:-8px;top:-5px;width:12px}.copilot-btn-label{letter-spacing:.01em}.copilot-live-dot{animation:pulse-dot 2s infinite;background-color:#22c55e;border-radius:50%;box-shadow:0 0 0 3px #22c55e59;height:8px;width:8px}@keyframes pulse-dot{0%,to{opacity:1;transform:scale(1)}50%{opacity:.7;transform:scale(1.3)}}@keyframes pulse-sparkle{0%,to{transform:rotate(0deg) scale(1)}50%{transform:rotate(15deg) scale(1.15)}}.copilot-drawer-container{animation:copilot-slide-up .3s cubic-bezier(.16,1,.3,1);bottom:24px;max-width:calc(100vw - 32px);position:fixed;right:24px;width:420px;z-index:10000}@keyframes copilot-slide-up{0%{opacity:0;transform:translateY(16px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}.copilot-card{background:var(--cp-window);border:1px solid var(--cp-line);border-radius:18px;box-shadow:0 24px 48px -12px var(--cp-shadow);color:var(--cp-text);display:flex;flex-direction:column;height:640px;max-height:calc(100vh - 48px);overflow:hidden}.copilot-header{align-items:center;border-bottom:1px solid var(--cp-line);display:flex;gap:8px;justify-content:space-between;padding:10px 10px 10px 14px}.copilot-header-info{align-items:center;display:flex;gap:10px;min-width:0}.copilot-header-text{min-width:0}.copilot-avatar{align-items:center;background:var(--accent-primary);border-radius:10px;display:flex;flex-shrink:0;height:32px;justify-content:center;position:relative;width:32px}.copilot-status-indicator{background-color:#22c55e;border:2px solid var(--cp-window);border-radius:50%;bottom:-2px;height:9px;position:absolute;right:-2px;width:9px}.copilot-status-indicator.speaking{animation:pulse-dot 1s infinite;background-color:#38bdf8}.copilot-title{color:var(--cp-text);font-size:.95rem;font-weight:650;line-height:1.25;margin:0;white-space:nowrap}.copilot-subtitle{color:var(--cp-muted);font-size:.72rem;margin:1px 0 0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.copilot-speaking-text{align-items:center;color:var(--cp-link);display:inline-flex;gap:3px}.audio-wave-bar{animation:audio-wave 1s ease-in-out infinite;background:currentColor;border-radius:2px;display:inline-block;height:9px;width:2px}.audio-wave-bar:nth-child(2){animation-delay:.2s;height:12px}.audio-wave-bar:nth-child(3){animation-delay:.4s;height:7px;margin-right:3px}@keyframes audio-wave{0%,to{transform:scaleY(.4)}50%{transform:scaleY(1.3)}}.copilot-listening-text{color:#f43f5e;font-weight:600}.copilot-header-actions{align-items:center;display:flex;flex-shrink:0;gap:2px}.copilot-action-btn{align-items:center;background:#0000;border:none;border-radius:8px;color:var(--cp-muted);cursor:pointer;display:flex;height:32px;justify-content:center;transition:background .15s ease,color .15s ease;width:32px}.copilot-action-btn:hover:not(:disabled){background:var(--cp-hover);color:var(--cp-text)}.copilot-action-btn:disabled{cursor:default;opacity:.4}.copilot-action-btn.muted{opacity:.6}.copilot-lang-btn{font-family:inherit;font-size:.78rem;font-weight:700}.copilot-action-btn.close:hover{background:#ef444424;color:var(--fg-red-400)}.copilot-messages-area{display:flex;flex:1 1;flex-direction:column;gap:18px;overflow-y:auto;padding:18px 16px 8px;scrollbar-width:thin}.copilot-empty{align-items:center;display:flex;flex-direction:column;margin:auto 0;padding:8px 4px;text-align:center}.copilot-empty-icon{align-items:center;background:var(--cp-chip);border-radius:12px;color:var(--cp-link);display:flex;height:40px;justify-content:center;margin-bottom:12px;width:40px}.copilot-empty-title{color:var(--cp-text);font-size:1.05rem;font-weight:650;margin:0 0 6px}.copilot-empty-text{color:var(--cp-muted);font-size:.84rem;line-height:1.5;margin:0 0 18px;max-width:320px}.copilot-suggestions{display:flex;flex-direction:column;gap:6px;width:100%}.copilot-suggestion{background:#0000;border:1px solid var(--cp-line);border-radius:10px;color:var(--cp-text-soft);cursor:pointer;font-family:inherit;font-size:.84rem;padding:10px 12px;text-align:start;transition:background .15s ease,border-color .15s ease;width:100%}.copilot-suggestion:hover:not(:disabled){background:var(--cp-hover);border-color:var(--cp-chip-line);color:var(--cp-text)}.copilot-msg-row{display:flex;flex-direction:column;min-width:0;position:relative}.copilot-msg-row.user{align-items:flex-end}.copilot-msg-row.assistant{align-items:stretch}.copilot-msg-bubble{font-size:.9rem;line-height:1.6;max-width:100%;min-width:0}.copilot-msg-bubble.user{background:var(--accent-primary);border-radius:16px 16px 4px 16px;color:#fff;max-width:85%;padding:8px 13px}.copilot-msg-bubble.assistant{color:var(--cp-text);padding:0 2px}.copilot-msg-row.error .copilot-msg-bubble.assistant{background:#ef444414;border:1px solid #ef44444d;border-radius:10px;padding:10px 12px}.copilot-msg-tools{display:flex;margin-top:2px;opacity:0;transition:opacity .15s ease}.copilot-msg-row:hover .copilot-msg-tools,.copilot-msg-tools:focus-within{opacity:1}@media (hover:none){.copilot-msg-tools{opacity:1}}.copilot-msg-replay-btn{align-items:center;background:#0000;border:none;border-radius:6px;color:var(--cp-muted);cursor:pointer;display:flex;height:26px;justify-content:center;width:26px}.copilot-msg-replay-btn:hover{background:var(--cp-hover);color:var(--cp-text)}.copilot-typing{align-items:center;display:flex;gap:10px;min-height:24px}.copilot-typing-dots{display:flex;gap:4px}.copilot-typing-dots span{animation:typing-bounce 1.4s ease-in-out infinite both;background-color:var(--cp-muted);border-radius:50%;height:6px;width:6px}.copilot-typing-dots span:first-child{animation-delay:-.32s}.copilot-typing-dots span:nth-child(2){animation-delay:-.16s}@keyframes typing-bounce{0%,80%,to{opacity:.5;transform:scale(.4)}40%{opacity:1;transform:scale(1)}}.copilot-typing-label{color:var(--cp-muted);font-size:.8rem}.copilot-msg-img-container{border-radius:10px;margin-bottom:6px;max-width:220px;overflow:hidden}.copilot-msg-img{display:block;max-height:180px;object-fit:cover;width:100%}.copilot-composer-wrap{padding:8px 12px 12px}.copilot-speech-banner{align-items:center;display:flex;gap:8px;padding:0 4px 8px}.copilot-mic-pulse-ring{animation:pulse-dot 1s infinite;background-color:#f43f5e;border-radius:50%;box-shadow:0 0 0 3px #f43f5e4d;flex-shrink:0;height:8px;width:8px}.copilot-speech-text{color:var(--cp-text-soft);font-size:.8rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.copilot-composer{background:var(--cp-panel);border:1px solid var(--cp-line);border-radius:14px;display:flex;flex-direction:column;transition:border-color .15s ease,box-shadow .15s ease}.copilot-composer:focus-within{border-color:var(--cp-chip-line);box-shadow:0 0 0 3px var(--cp-chip)}.copilot-text-input{background:#0000;border:none;box-sizing:border-box;color:var(--cp-text);display:block;font-family:inherit;font-size:.9rem;line-height:1.45;max-height:132px;outline:none;overflow-y:auto;padding:11px 14px 4px;resize:none;width:100%}.copilot-text-input::placeholder{color:var(--cp-muted)}.copilot-composer-bar{align-items:center;display:flex;gap:4px;padding:4px 6px 6px}.copilot-composer-spacer{flex:1 1}.copilot-tool-btn{align-items:center;background:#0000;border:none;border-radius:9px;color:var(--cp-muted);cursor:pointer;display:flex;flex-shrink:0;height:34px;justify-content:center;transition:background .15s ease,color .15s ease;width:34px}.copilot-tool-btn:hover:not(:disabled){background:var(--cp-hover);color:var(--cp-text)}.copilot-tool-btn:disabled{cursor:default;opacity:.45}.copilot-mic-btn.listening{animation:pulse-mic 1.5s infinite;background:#f43f5e;color:#fff}@keyframes pulse-mic{0%{box-shadow:0 0 0 0 #f43f5e80}70%{box-shadow:0 0 0 8px #f43f5e00}to{box-shadow:0 0 0 0 #f43f5e00}}.copilot-send-btn{align-items:center;background:var(--accent-primary);border:none;border-radius:50%;color:#fff;cursor:pointer;display:flex;flex-shrink:0;height:34px;justify-content:center;transition:opacity .15s ease,transform .15s ease;width:34px}.copilot-send-btn:hover:not(:disabled){transform:scale(1.05)}.copilot-send-btn:disabled{cursor:default;opacity:.35}.copilot-attachment{align-items:center;align-self:flex-start;background:var(--cp-hover);border-radius:10px;display:flex;gap:8px;margin:8px 8px 0;max-width:calc(100% - 16px);padding:4px}.copilot-attachment-thumb{border-radius:7px;display:block;flex-shrink:0;height:36px;object-fit:cover;width:36px}.copilot-attachment-label{color:var(--cp-text-soft);font-size:.78rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.copilot-attachment-remove{align-items:center;background:#0000;border:none;border-radius:6px;color:var(--cp-muted);cursor:pointer;display:flex;flex-shrink:0;height:24px;justify-content:center;width:24px}.copilot-attachment-remove:hover{background:var(--cp-hover);color:var(--cp-text)}@media (max-width:768px){.copilot-drawer-container{z-index:100000000}.copilot-floating-btn,.copilot-restore-pill{bottom:96px}}@media (max-width:480px){.copilot-drawer-container{bottom:0;left:0;max-width:100%;right:0;width:100%}.copilot-card{border-radius:18px 18px 0 0;height:88vh;height:88dvh;max-height:88dvh}.copilot-floating-btn{font-size:.88rem;padding:10px 16px;right:16px}.copilot-text-input{font-size:16px}}.copilot-action-card{background:var(--cp-panel);border:1px solid var(--cp-line);border-radius:12px;margin-top:10px;padding:12px 14px}.copilot-action-card.danger{border-color:#ef444473}.copilot-action-card.status-done{border-color:#22c55e73}.copilot-action-card.status-failed{border-color:#ef44448c}.copilot-action-card.status-cancelled,.copilot-action-card.status-expired{opacity:.6}.copilot-action-head{align-items:center;display:flex;gap:8px;justify-content:space-between;margin-bottom:4px}.copilot-action-title{color:var(--cp-text-soft);font-size:.8rem;font-weight:650}.copilot-action-card.danger .copilot-action-title{color:var(--fg-red-400)}.copilot-action-badge{align-items:center;background:var(--cp-hover);border-radius:999px;color:var(--cp-text-soft);display:inline-flex;font-size:.7rem;gap:4px;padding:2px 8px;white-space:nowrap}.copilot-action-card.status-done .copilot-action-badge{background:#22c55e26;color:var(--fg-emerald-400)}.copilot-action-card.status-failed .copilot-action-badge{background:#ef444426;color:var(--fg-red-400)}.copilot-action-summary{color:var(--cp-text);font-size:.85rem;font-weight:600}.copilot-action-details{color:var(--cp-text-soft);font-size:.78rem;margin:6px 0 0;padding-left:16px}.copilot-action-details li{margin:2px 0}.copilot-action-result{color:var(--fg-red-400);font-size:.78rem;margin-top:6px}.copilot-action-buttons{display:flex;gap:8px;margin-top:10px}.copilot-action-cancel,.copilot-action-confirm{align-items:center;border:1px solid #0000;border-radius:8px;cursor:pointer;display:inline-flex;flex:1 1;font-size:.82rem;font-weight:600;gap:6px;justify-content:center;padding:7px 10px;transition:filter .15s ease}.copilot-action-confirm{background:var(--accent-primary);color:#fff}.copilot-action-card.danger .copilot-action-confirm{background:#dc2626}.copilot-action-cancel{background:#0000;border-color:var(--cp-line);color:var(--cp-text)}.copilot-action-cancel:hover:not(:disabled),.copilot-action-confirm:hover:not(:disabled){filter:brightness(1.15)}.copilot-action-cancel:disabled,.copilot-action-confirm:disabled{cursor:not-allowed;opacity:.5}.copilot-nav-chip{align-items:center;background:var(--cp-chip);border:1px solid var(--cp-chip-line);border-radius:8px;color:var(--cp-chip-text);cursor:pointer;display:inline-flex;font-size:.78rem;gap:6px;margin-top:8px;padding:5px 10px}.copilot-wa-list{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.copilot-wa-link{align-items:center;background:#22c55e26;border:1px solid #22c55e66;border-radius:8px;color:var(--fg-emerald-400);display:inline-flex;font-size:.78rem;gap:5px;padding:5px 10px;text-decoration:none}.copilot-wa-link:hover{background:#22c55e40}.copilot-wa-missing{background:var(--cp-hover);border-radius:8px;color:var(--cp-muted);font-size:.78rem;padding:5px 10px}.copilot-inline-status{align-items:center;color:var(--cp-muted);display:flex;font-size:.75rem;gap:6px;margin-top:6px}.copilot-msg-img-note{font-size:.75rem;margin-bottom:4px;opacity:.8}.copilot-spin{animation:copilot-spin 1s linear infinite}@keyframes copilot-spin{to{transform:rotate(1turn)}}.copilot-action-btn:disabled{cursor:not-allowed;opacity:.5}