:root{--bg:#f5f7f8;--panel:#fff;--text:#203b3a;--muted:#657775;--line:#e2e9e6;--soft:#eaf3ef;--blue:#286451;--nav:#203b3a;--shadow:0 4px 20px #243d3504}body{font-family:'Segoe UI',system-ui,sans-serif;font-size:14px;line-height:1.6;-webkit-font-smoothing:antialiased}body.dark{--bg:#111e21;--panel:#19292c;--text:#e5eeeb;--muted:#a4b8b3;--line:#2e4143;--soft:#243c39;--blue:#9fd5bd;--nav:#e5eeeb;--shadow:0 5px 24px #0000000a}button,input,select,textarea{font-family:inherit}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #79b7a0;outline-offset:4px}a,button{touch-action:manipulation}.btn,nav a,.stat,.material-card,.subject-card{transition:background .16s,box-shadow .16s,transform .16s,border-color .16s}
aside{width:246px;padding:30px 20px 20px;scrollbar-width:thin;scrollbar-color:var(--line) transparent}.brand{font-size:25px;letter-spacing:-1px;gap:10px;line-height:1.1}.brand-icon{width:40px;height:44px;background:var(--blue);color:var(--panel);border-radius:13px}.brand-icon svg{width:26px;height:26px}.brand small{font-size:8px;letter-spacing:1.6px;margin-top:8px;font-weight:600}.workspace{background:var(--bg);border-radius:13px;padding:13px 11px;margin:29px 0 27px}.avatar{background:#e2ede7;color:#376451;width:34px;height:34px;flex-shrink:0}.private-dot{color:#61a283}.nav-label{font-size:9px;font-weight:700;letter-spacing:1.9px;padding-left:13px;margin-bottom:9px}.nav-section{margin-top:25px}nav a,nav button{min-height:44px;padding:11px 13px;font-size:13px;gap:12px;margin:4px 0;border-radius:10px;font-weight:500}nav a.active{font-weight:700;position:relative}nav a.active:before{content:'';position:absolute;left:-20px;width:3px;height:23px;background:var(--blue);border-radius:0 4px 4px 0}.nav-icon{width:18px;height:18px;flex-shrink:0}.sidebar-note{padding:26px 12px 15px;font-size:12px}.sidebar-note p{line-height:1.7;margin:6px 0}.note-art{font-size:23px;color:#9bbaaa}.bottom-nav{padding-top:12px}.bottom-nav a,.bottom-nav button{font-size:12px;min-height:38px;padding-top:8px;padding-bottom:8px}
.shell{margin-left:246px;min-width:0}header{height:76px;padding:0 38px;gap:16px}#breadcrumb{font-size:11px}.local-badge{font-size:10px;background:var(--bg);padding:6px 11px;border:1px solid var(--line);border-radius:30px}.small-avatar{width:30px;height:30px}main{padding:28px 38px 48px;max-width:1480px}.context-bar{margin-bottom:30px;gap:20px}.context-bar .filters{gap:14px}.context-bar label{font-size:10px;font-weight:500}.context-bar select{margin-top:5px;min-width:112px;padding:8px 11px;font-size:11px}.context-bar form{background:var(--panel);border-radius:10px;max-width:380px;flex:1}.context-bar input{width:100%;min-width:0;font-size:11px;padding:11px 14px}.context-bar form button{font-size:22px;background:transparent;padding:0 14px}.heading-row{margin-bottom:24px;align-items:center;gap:24px}.heading-row>div:first-child{min-width:0}.heading-row .eyebrow{display:none}h1{font-size:31px;font-weight:700;letter-spacing:-1.2px;margin:0 0 7px;line-height:1.25}.subtitle{font-size:13px;margin:0}.heading-row .actions{gap:8px;flex-shrink:0}h2{font-size:17px;letter-spacing:-.4px;font-weight:650}h3{font-weight:650}.eyebrow{font-size:9px;letter-spacing:1.7px;font-weight:700}
.btn{border:1px solid transparent;border-radius:9px;min-height:40px;padding:10px 15px;font-size:11px;font-weight:650;line-height:1.4}.btn:hover{box-shadow:0 4px 12px #1a50331c;transform:translateY(-1px)}.btn.secondary{color:var(--text);background:var(--panel);border-color:var(--line)}.btn.secondary:hover{background:var(--soft);border-color:#97b8a7}.text-link{font-size:11px;white-space:nowrap}.plain-button{font-size:11px;font-weight:600}.plain-button:hover,.text-link:hover{text-decoration:underline}.actions{gap:8px}
.hero{background:#deebe3;color:#214a3b;border:1px solid #d3e2d8;border-radius:20px;padding:30px 34px;min-height:272px;margin-bottom:20px;isolation:isolate}.hero-copy{position:relative;z-index:1}.hero .eyebrow{color:#4b715e;font-size:9px;display:flex;align-items:center;gap:7px;letter-spacing:1.2px}.day-dot{width:6px;height:6px;background:#6e957c;border-radius:50%}.hero h2{font-size:32px;letter-spacing:-1.2px;line-height:1.17;font-weight:650;margin:16px 0 12px}.hero p{font-size:12px;line-height:1.8;color:#526f60;margin:0 0 21px}.hero .btn{background:#245b47;color:#fff;padding:10px 15px;min-height:39px;box-shadow:none}.hero .btn span{margin-left:10px;font-size:16px}
.study-art{position:relative;flex:0 0 300px;height:240px;margin-left:auto;margin-right:4px}.art-orbit{position:absolute;width:237px;height:237px;top:3px;left:28px;border:1px solid #aec9b655;border-radius:50%;background:#c9dfcf66}.art-orbit:before{content:'';position:absolute;inset:17px;border:1px solid #b6cebc66;border-radius:50%}.art-notebook{position:absolute;width:157px;height:204px;top:15px;left:73px;transform:rotate(10deg);background:#fbf6e8;border:1px solid #f5eacd;border-left:12px solid #c9d6b7;border-radius:5px 13px 13px 5px;box-shadow:6px 12px 0 #95b49b33,0 16px 22px #33513a14;padding:24px 16px;color:#315742}.notebook-label{font-size:7px;letter-spacing:1.6px;font-weight:650}.notebook-title{font-family:Georgia,serif;font-size:23px;line-height:1.2;margin-top:16px;letter-spacing:-1px}.notebook-lines{height:22px;margin-top:12px;background:repeating-linear-gradient(to bottom,transparent 0 6px,#cdd5bf 6px 7px)}.notebook-star{position:absolute;bottom:8px;right:13px;font-size:33px;color:#a7b893}.art-check{position:absolute;bottom:6px;left:19px;padding:11px 14px;border:1px solid #f3f7ef;background:#fffef5;color:#46644f;border-radius:10px;box-shadow:0 5px 20px #35533d14;font-size:18px;transform:rotate(-5deg);display:flex;align-items:center;gap:9px}.art-check span{font-size:10px;font-weight:600}.art-spark{position:absolute;top:9px;right:6px;font-size:32px;color:#b1944b}.art-pencil{position:absolute;height:155px;width:10px;background:linear-gradient(to right,#c49a49 0 25%,#edc66d 25% 75%,#d4ad5e 75%);right:35px;top:84px;transform:rotate(24deg);border-radius:3px 3px 0 0}.art-pencil:after{content:'';position:absolute;top:100%;border-left:5px solid transparent;border-right:5px solid transparent;border-top:16px solid #a17d4d}
.stats{gap:14px;margin-bottom:28px}.dashboard-stats{grid-template-columns:repeat(4,minmax(0,1fr))}.stat{padding:18px 16px;border-radius:14px;gap:12px;position:relative;min-width:0}.stat strong{font-size:26px;font-weight:650;letter-spacing:-1px}.stat small{font-size:10px;line-height:1.5;margin-top:3px}.icon{width:39px;height:39px;font-size:20px;border-radius:11px;flex-shrink:0}.stat:nth-child(2) .icon{background:#edf0fa;color:#6d7fa8}.stat:nth-child(3) .icon{background:#faf0db;color:#9c7933}.stat:nth-child(4) .icon{background:#f4eaf0;color:#a37691}.stat-arrow{margin-left:auto;align-self:flex-start;color:var(--muted);font-size:13px}.stat:hover{border-color:#99b6a8;box-shadow:0 5px 15px #244e3910;transform:translateY(-2px)}.section-intro{margin:5px 0 16px}.section-intro .eyebrow{margin-bottom:4px}.section-intro h2{font-size:21px;letter-spacing:-.7px}.grid{gap:20px}.dashboard-day{grid-template-columns:1.1fr 1fr;align-items:start}.dashboard-day>.wide{margin-top:0}.dashboard-study{margin-top:22px;grid-template-columns:1fr 1.1fr}.card{padding:23px;border-radius:18px;min-width:0}.card-head{gap:14px;padding-bottom:16px;border-bottom:1px solid var(--line)}.section-kicker{display:block;font-size:8px;letter-spacing:1.4px;color:var(--muted);font-weight:650;margin-bottom:5px}.card-head p{margin:4px 0 0}.list-row{padding:17px 0;gap:14px}.list-row:last-child{border-bottom:0}.class-time{min-width:45px;border-right:1px solid var(--line);padding-right:13px;line-height:1.2}.class-time strong{font-size:12px}.class-time small{font-size:10px;margin-top:5px}.class-detail{flex:1;min-width:0;font-size:12px}.class-detail small{font-size:10px}.class-row .btn{font-size:10px;min-height:32px;padding:7px 10px}.today-card>.plain-button{margin-top:12px;padding-left:0}
.empty{padding:30px 12px 22px}.empty .empty-icon{width:49px;height:49px;font-size:22px;background:var(--soft);color:var(--blue);margin-bottom:12px}.empty h3{font-size:13px}.empty p{font-size:11px;line-height:1.8}.tag{font-size:9px;padding:4px 10px}.status-note{border-left-color:#8cad97;font-size:12px;line-height:1.8}.subject-mark{width:46px;height:46px;font-size:18px;border-radius:13px}.feature-list{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.subject-card:hover{border-color:#a5c0b3;transform:translateY(-2px)}.subject-card h2{font-size:18px}.subject-card p{line-height:1.8}.subject-card .actions{margin-top:20px}.subject-card .plain-button{padding:7px 4px}.subject-card .plain-button.danger{margin-left:auto}
.homework-card{padding:20px 0;gap:13px}.homework-content h3{font-size:14px;line-height:1.5}.homework-content p{font-size:12px}.homework-card-top{font-size:11px}.task-check{width:29px;height:29px;border-width:1.5px;border-radius:9px;font-size:20px;border-color:#a4bdb0}.task-state{font-size:9px}.task-deadline strong{font-size:11px}.task-deadline{gap:6px}.homework-content .unavailable{font-size:10px}.homework-content .plain-button{font-size:10px;padding:5px}.homework-footer{padding-top:15px}.homework-panel .empty{padding-top:38px;padding-bottom:30px}.homework-panel .card-head .btn{font-size:10px;min-height:34px;padding:8px 10px}.task-group-title{color:var(--muted);font-size:12px;text-transform:uppercase;letter-spacing:1px}
.material-grid{gap:14px}.material-card{border-radius:13px}.material-card:hover{border-color:#99b7a7;box-shadow:0 6px 20px #1a43300a}.material-info{padding:15px}.material-info h3{font-size:14px;line-height:1.5}.thumb,.file-placeholder{height:155px}.file-placeholder{font-size:32px}.library-filters{padding:0 0 16px;margin:0 0 10px;border-bottom:1px solid var(--line)}.library-filters input{min-height:38px}.day-column{border-radius:14px;padding:18px}.day-column h2{font-size:12px;padding-bottom:6px}.schedule-item{border-top:0;border-left:3px solid #8bae98;background:var(--bg);border-radius:0 9px 9px 0;padding:12px 10px;margin-top:13px}.schedule-item h3{font-size:12px}.schedule-item small{font-size:10px}.schedule-item p{margin:7px 0}.schedule-item .actions{flex-wrap:wrap}.exam-card h3{font-size:14px}.exam-card .actions{margin-top:12px}
.form input,.form select,.form textarea{border-radius:10px;font-size:13px}.form label{font-size:12px}.form input:focus,.form textarea:focus,.form select:focus{border-color:#8bad9b}.form input[type=file]{padding:15px;border-style:dashed}.form input[type=file]::file-selector-button{background:var(--soft);border:0;border-radius:6px;padding:8px 12px;color:var(--blue);margin-right:12px;font:inherit}.form .btn{font-size:12px}.tabs{gap:7px}.tab{border-radius:8px;font-size:12px}.tab.chosen{box-shadow:inset 0 -2px var(--blue)}dialog{border-radius:20px;padding:27px;box-shadow:0 24px 100px #061e2b44}dialog::backdrop{background:#10272499}.dialog-head h2{font-size:21px}.dialog-actions{margin-top:16px}.auth-card{padding:34px;max-width:530px}.auth-card>.brand-icon{font-size:27px}.auth-card>h1{font-size:29px}.auth-card .tabs{justify-content:space-between}.auth-card .tab{padding:10px}.auth-card .form input{font-size:16px}footer{padding:20px 38px;font-size:10px;background:var(--bg)}#toast{border:1px solid var(--line);box-shadow:0 8px 25px #0002;font-size:13px;border-radius:12px;max-width:90vw}main:focus{outline:0}.heading-row+.card{margin-top:0}.preserve{line-height:1.8}.ai-panel{border-radius:16px}
body.dark .hero{background:#29433b;border-color:#365347;color:#e6efe7}body.dark .hero .eyebrow,body.dark .hero p{color:#bbcebf}body.dark .hero .btn{background:#dcebdd;color:#214434}body.dark .art-orbit{background:#789c7d1a;border-color:#8eac8f33}body.dark .stat:nth-child(2) .icon{background:#2d394b;color:#b9c9e7}body.dark .stat:nth-child(3) .icon{background:#433d2b;color:#e2c487}body.dark .stat:nth-child(4) .icon{background:#41323f;color:#d7b4ce}body.dark .brand-icon{background:#a2ccb5;color:#19352c}
@media(min-width:1600px){main{padding-top:34px}.hero{min-height:300px}.hero h2{font-size:36px}.study-art{margin-right:70px}}
@media(max-width:1200px){aside{width:220px;padding:25px 16px}.shell{margin-left:220px}.brand{font-size:22px}nav a.active:before{left:-16px}main{padding:26px 26px 40px}header{padding:0 26px}.hero{padding:26px;min-height:254px}.hero h2{font-size:29px}.study-art{flex-basis:245px;transform:scale(.9);transform-origin:right center}.stat{padding:16px 12px;gap:10px}.stat-arrow{display:none}.dashboard-day{grid-template-columns:1fr 1fr}.class-row{flex-wrap:wrap}.class-row .btn{margin-left:59px}.heading-row{flex-wrap:wrap}.heading-row .actions{flex-shrink:1}.feature-list{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:1000px) and (min-width:761px){.dashboard-day,.dashboard-study{grid-template-columns:1fr}.dashboard-stats{grid-template-columns:repeat(2,minmax(0,1fr))}.study-art{flex-basis:185px;transform:scale(.72);margin-left:-30px}.hero h2{font-size:28px}.hero{padding:24px}.context-bar{flex-wrap:wrap}.context-bar form{max-width:none}.hero-copy{min-width:260px}.stat-arrow{display:block}.class-row .btn{margin-left:0}.class-row{flex-wrap:nowrap}.sidebar-note{display:none}.bottom-nav{margin-top:auto}}
@media(max-width:760px){aside{width:260px;padding:25px 20px;box-shadow:none}.shell{margin-left:0}.brand{font-size:25px}header{height:64px;padding:0 18px;gap:12px}#breadcrumb{font-size:10px}.local-badge{display:none}.small-avatar{margin-left:auto}#menu{font-size:19px;width:30px;padding:0}main{padding:23px 18px 34px}.context-bar{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:25px}.context-bar .filters{margin:0;gap:10px}.context-bar select{min-width:110px;font-size:11px}.context-bar form{flex-basis:100%;margin:0;max-width:none}.context-bar input{padding:10px 12px}.heading-row{display:block;margin-bottom:21px}h1{font-size:27px}.subtitle{font-size:12px}.heading-row .actions{margin:17px 0 0;gap:8px}.heading-row .btn{padding:10px 13px;min-height:39px}.hero{padding:24px;min-height:240px;border-radius:17px;margin-bottom:16px}.hero h2{font-size:29px;margin-top:14px}.hero p{font-size:11px}.hero .eyebrow{font-size:8px;letter-spacing:1px}.study-art{display:none}.hero:after{content:'✳';position:absolute;right:-18px;bottom:-58px;color:#a9c6b15c;font-size:190px;z-index:0;line-height:1}.hero-copy{z-index:1}.stats,.dashboard-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin-bottom:25px}.stat{display:flex;padding:15px 12px;gap:10px;min-height:88px}.stat .icon{width:33px;height:33px;font-size:17px;margin:0}.stat strong{font-size:24px}.stat small{font-size:10px;max-width:95px}.stat-arrow{display:none}.section-intro h2{font-size:20px}.grid,.dashboard-day,.dashboard-study{grid-template-columns:1fr;gap:16px}.dashboard-study{margin-top:16px}.card{padding:20px;border-radius:16px}.card-head{gap:10px;padding-bottom:15px}.card-head h2{font-size:16px}.section-kicker{font-size:7px}.text-link{font-size:10px}.class-row{flex-wrap:nowrap;gap:12px}.class-row .btn{margin-left:0;font-size:9px;padding:7px 8px}.class-detail{font-size:12px}.class-time{min-width:43px;padding-right:10px}.feature-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.subject-card{padding:17px}.subject-card h2{font-size:15px}.subject-card .actions{gap:3px}.subject-card .btn{padding:8px 9px;font-size:10px}.subject-card .plain-button{font-size:10px}.subject-card .subject-mark{width:36px;height:36px;font-size:14px}.material-grid{gap:10px}.material-info{padding:12px}.material-info h3{font-size:12px}.thumb,.file-placeholder{height:125px}.homework-content h3{font-size:13px}.homework-card-top{font-size:10px}.homework-content p{font-size:11px}.homework-panel .card-head .btn{font-size:9px;padding:8px}.homework-filters{gap:12px}.homework-filters select,.homework-filters input{font-size:12px;width:100%}.homework-filters label{min-width:0}.card .status-note{font-size:11px;padding:12px}.library-filters{gap:12px;margin-top:0}.library-filters label{width:100%}.library-filters input,.library-filters select{width:100%;margin-top:5px}.auth-card{padding:24px 20px}.auth-card .tab{padding:9px 7px;font-size:11px}dialog{padding:22px 19px;border-radius:16px}.dialog-head h2{font-size:19px}.form input,.form select,.form textarea{font-size:16px}footer{padding:20px 18px;font-size:9px;gap:12px}footer a{margin-left:auto}body.menu-open:before{content:'';position:fixed;inset:0;background:#0d252c88;z-index:4}body.menu-open aside{box-shadow:10px 0 40px #0003}body.menu-open #menu{position:relative;z-index:6;background:var(--panel);border-radius:7px}body.menu-open header{position:relative;z-index:5}}
@media(max-width:370px){.feature-list{grid-template-columns:1fr}.heading-row .btn{font-size:10px;padding:9px 11px}.class-row{flex-wrap:wrap}.class-row .btn{margin-left:55px}.stat{padding:12px 9px;gap:8px}.stat small{font-size:9px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{transition:none!important;scroll-behavior:auto!important}}

@media(max-height:850px){aside{padding-top:22px;padding-bottom:18px}.sidebar-note{display:none}.bottom-nav{margin-top:auto}.workspace{padding:10px 11px;margin:18px 0}.nav-section{margin-top:15px}nav a,nav button{min-height:36px;padding-top:8px;padding-bottom:8px;margin-top:2px;margin-bottom:2px}.bottom-nav a,.bottom-nav button{min-height:34px}}
@media(max-width:760px){body.menu-open header{position:static;z-index:auto}body.menu-open #menu{position:fixed;top:17px;left:218px;z-index:7;width:28px;height:30px;background:var(--panel)}body.menu-open #menu:after{content:'×';font-size:26px;position:absolute;inset:0;line-height:30px;background:var(--panel);border-radius:6px}}
.ai-intro{background:var(--soft);margin-bottom:22px}.ai-intro h2{font-size:23px;margin:14px 0 9px;max-width:580px}.ai-intro>p{max-width:750px;font-size:13px}.ai-steps{display:flex;gap:23px;flex-wrap:wrap;margin:24px 0}.ai-steps span{display:flex;align-items:center;gap:9px;font-size:12px}.ai-steps b{display:grid;place-items:center;width:27px;height:27px;background:var(--panel);border:1px solid var(--line);border-radius:50%;color:var(--blue)}.ai-hub-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(255px,1fr));gap:18px}.ai-hub-card{display:flex;flex-direction:column}.ai-hub-meta{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:10px}.ai-hub-card h2{font-size:19px;margin:19px 0 0}.ai-hub-card>p{font-size:12px}.ai-hub-card .actions{margin-top:auto;padding-top:18px}.ai-preview{padding:13px;background:var(--bg);border-radius:10px}.ai-export>summary{font-size:16px;font-weight:650;cursor:pointer}.ai-export>summary span{display:block;font-size:11px;font-weight:400;color:var(--muted);margin:5px 0 0 17px}.ai-export[open]>summary{padding-bottom:18px;border-bottom:1px solid var(--line);margin-bottom:18px}body[data-page=material] .ai-panel{margin-top:0}.ai-warning{color:#9c592c!important}body.dark .ai-warning{color:#edc199!important}@media(max-width:760px){.ai-intro h2{font-size:20px}.ai-steps{display:grid;gap:13px}.ai-hub-grid{grid-template-columns:1fr}.ai-hub-card h2{font-size:18px}.ai-panel .card-head{align-items:flex-start}.ai-result>p{font-size:13px}}
.ai-page-selection{max-height:270px;overflow:auto;border:1px solid var(--line);border-radius:12px;padding:0 12px;margin:18px 0;overscroll-behavior:contain}.ai-page-selection .select-row{gap:12px;padding:12px 0;align-items:center}.ai-page-selection .select-row img{width:50px;height:64px;object-fit:contain;background:var(--bg);border-radius:6px;flex-shrink:0}.ai-page-selection .select-row span{min-width:0}.ai-page-selection .select-row:last-child{border-bottom:0}@media(max-width:760px){.ai-page-selection{max-height:230px}.ai-page-selection .select-row span{font-size:11px}}

.notification-panel{margin:0 0 23px}.notification-panel>p{font-size:13px;max-width:850px}.notification-panel .notification-state{font-size:12px;color:var(--blue);font-weight:600}.notification-panel [hidden]{display:none!important}.notification-panel .actions{margin-top:16px}.notification-panel .card-head{flex-wrap:wrap}