@import url('/static/vendor/katex.css');
:root{--bg:#f6f7f2;--surface:#fff;--ink:#263f38;--muted:#7a8880;--line:#e6ebe2;--green:#266f60;--green-dark:#175346;--mint:#eaf3e9;--gold:#d8ab55;--soft-gold:#fbf2dc;--red:#be5f4d;--shadow:0 5px 24px #273f3408;--radius:20px;font-family:Inter,'PingFang SC','Microsoft YaHei',sans-serif;color:var(--ink);font-size:14px}
*{box-sizing:border-box}body{margin:0;background:var(--bg)}button,input,select,textarea{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:var(--green)}button:disabled{cursor:wait;opacity:.6}button{color:inherit}button:focus-visible,a:focus-visible{outline:3px solid #d6ad58;outline-offset:3px}input:focus,textarea:focus,select:focus{border-color:#7daa98;outline:3px solid #edf5ec}button svg{flex-shrink:0}h1,h2,h3,h4,p{margin:0}h1{font-size:27px;font-weight:650;letter-spacing:-.7px}h2{font-size:18px;font-weight:650}h3{font-size:16px}small{font-size:12px}button{border:0;background:none}input,select,textarea{border:1px solid var(--line);background:#fff;border-radius:11px;padding:11px 12px;color:var(--ink);width:100%;min-width:0}textarea{resize:vertical;line-height:1.7}input[type=checkbox]{width:18px;height:18px;accent-color:var(--green)}label{display:block;font-weight:500;font-size:13px}label>input,label>select,label>textarea{margin-top:8px}form label{margin-bottom:17px}.muted{color:var(--muted)}.small{font-size:12px}.strong{font-weight:650}.row{display:flex;align-items:center;gap:12px}.between{display:flex;align-items:center;justify-content:space-between;gap:14px}.stack{display:flex;flex-direction:column;gap:16px}.wrap{flex-wrap:wrap}.grow{flex:1;min-width:0}.hidden{display:none!important}.spacer{margin-top:24px}.divider{height:1px;background:var(--line);margin:22px 0}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--line);background:white;padding:10px 16px;border-radius:10px;font-weight:550;font-size:13px;white-space:nowrap;transition:background .15s,transform .15s;min-height:40px}.btn:hover{background:#f3f6ef;transform:translateY(-1px)}.btn.primary{background:var(--green);border-color:var(--green);color:#fff}.btn.primary:hover{background:var(--green-dark)}.btn.soft{background:var(--mint);border-color:transparent;color:var(--green)}.btn.tiny{padding:6px 10px;min-height:32px;font-size:12px}.btn.danger{color:var(--red)}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:35px;height:35px;border-radius:9px}.icon-btn:hover{background:var(--mint)}.pill{display:inline-flex;align-items:center;gap:6px;padding:5px 10px;border-radius:7px;background:#f2f5ed;color:#607365;font-size:11px;font-weight:550;white-space:nowrap}.pill.gold{background:var(--soft-gold);color:#a47a30}.pill.green{background:var(--mint);color:var(--green)}.pill.red{background:#fbefeb;color:var(--red)}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:23px;box-shadow:var(--shadow)}.section-heading{margin-bottom:20px}.eyebrow{font-size:11px;letter-spacing:2px;color:#8c9b8c;font-weight:650;text-transform:uppercase}.page-head{margin-bottom:28px}.page-head p{color:var(--muted);margin-top:10px;line-height:1.7}.grid2{display:grid;grid-template-columns:1fr 1fr;gap:20px}.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.boot{height:100vh;display:grid;place-content:center;text-align:center;gap:18px}.spinner{display:inline-block;width:20px;height:20px;border:2px solid #d6e7d9;border-top-color:var(--green);border-radius:50%;animation:spin 1s linear infinite;margin:auto}@keyframes spin{to{transform:rotate(360deg)}}@keyframes enter{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}
.shell{min-height:100vh;padding-left:234px}.sidebar{position:fixed;inset:0 auto 0 0;width:234px;background:#fff;border-right:1px solid var(--line);padding:32px 20px 20px;display:flex;flex-direction:column;z-index:20}.brand{display:flex;align-items:center;gap:11px;margin:0 9px 38px}.brand-mark{width:43px;height:43px;border-radius:14px;background:var(--green);display:grid;place-content:center;color:#fff7df}.brand strong{font-size:20px;letter-spacing:1px;display:block}.brand small{font-size:9px;letter-spacing:2.5px;color:#9baba0;display:block;margin-top:5px}.nav-label{font-size:10px;letter-spacing:1.7px;color:#a2afa6;padding:0 15px;margin-bottom:12px}.nav-item{display:flex;align-items:center;gap:12px;padding:13px 15px;border-radius:11px;color:#77877d;width:100%;text-align:left;margin-bottom:6px;font-weight:500}.nav-item:hover{background:#f8faf5}.nav-item.active{background:var(--mint);color:var(--green);font-weight:650}.nav-item.active:after{content:'';width:5px;height:5px;border-radius:50%;background:var(--green);margin-left:auto}.sidebar-bottom{margin-top:auto;padding-top:36px}.sidebar-note{border:1px solid var(--line);background:#fcfcf8;padding:16px;border-radius:14px;line-height:1.8;margin-bottom:17px;font-size:12px}.sidebar-note strong{display:block;margin:6px 0}.account{display:flex;align-items:center;gap:9px;padding:12px 7px 0;border-top:1px solid var(--line)}.avatar{width:35px;height:35px;border-radius:50%;background:#f3e8d3;color:#a18146;display:grid;place-content:center;font-size:12px}.topbar{height:82px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;padding:0 38px;background:#fcfdf9}.breadcrumb{color:#94a095;font-size:12px;display:flex;align-items:center;gap:12px}.breadcrumb strong{font-weight:500;color:#556d60}.top-tools{display:flex;align-items:center;gap:17px}.grade-select{width:auto;max-width:145px;background:transparent;font-size:12px;border:0;padding:7px 10px}.top-date{font-size:12px;color:#8a988e}.content{max-width:1500px;margin:0 auto;padding:32px 38px 40px;animation:enter .2s}.mobile-menu{display:none}.hero{background:#eaf1e5;border:1px solid #e2e9db;border-radius:23px;position:relative;overflow:hidden;min-height:238px;padding:29px 31px;display:flex;align-items:center;margin-bottom:22px}.hero-copy{position:relative;z-index:1;max-width:65%}.hero h2{font-size:28px;line-height:1.55;letter-spacing:-.6px;margin:12px 0}.hero p{font-size:13px;color:#738771;line-height:1.9;margin-bottom:20px}.hero .owl{width:260px;height:230px;position:absolute;right:18px;bottom:0}.hero .eyebrow{color:#7a957b}.hero h2 em{font-style:normal;color:var(--green)}.stats-row{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin:22px 0 28px}.stat-card{padding:18px 20px;display:flex;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);border-radius:16px}.stat-icon{height:41px;width:41px;display:grid;place-content:center;border-radius:13px;color:var(--green);background:#eff5ec}.stat-card:nth-child(2) .stat-icon{background:#fff6e4;color:#b18a3f}.stat-card:nth-child(3) .stat-icon{background:#eaf1f7;color:#6e8eab}.stat-card:nth-child(4) .stat-icon{background:#f5edee;color:#af8186}.stat-value{font-size:25px;font-weight:650;line-height:1.2;font-variant-numeric:tabular-nums}.stat-value small{font-size:11px;font-weight:400;color:#8c9a8f;margin-left:5px}.stat-label{font-size:11px;color:#879488;margin-top:5px}.home-columns{display:grid;grid-template-columns:minmax(0,1fr) 305px;gap:24px}.subject-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.subject-card{background:white;border:1px solid var(--line);border-radius:16px;padding:21px;text-align:left;transition:transform .2s,border-color .2s}.subject-card:hover{transform:translateY(-3px);border-color:#9cbeaa}.subject-card .subject-symbol{width:43px;height:43px;border-radius:12px;display:grid;place-content:center;background:#eaf3ee;color:#5f8b76;margin-bottom:18px}.subject-card:nth-child(2) .subject-symbol{background:#fff1e1;color:#b99765}.subject-card:nth-child(3) .subject-symbol{background:#eaf1fb;color:#7891b0}.subject-card h3{margin-bottom:7px;font-size:15px}.subject-card p{font-size:11px;line-height:1.6;color:#96a194}.subject-card .chevron{float:right;color:#9eb0a1;margin-top:3px}.task-row{display:flex;gap:12px;align-items:flex-start;padding:15px 0;border-bottom:1px solid #edf0e9}.task-row:last-child{border:0}.task-row input{margin-top:3px}.task-row h4{font-weight:500;line-height:1.6;font-size:13px}.task-row.done h4{text-decoration:line-through;color:#99a399}.task-row p{font-size:11px;color:#94a08f;margin-top:7px}.text-link{color:var(--green);font-size:12px;display:inline-flex;align-items:center;gap:5px;padding:5px 0}.focus-card{background:#f9f4e9;border-color:#efe6d2}.focus-circle{width:143px;height:143px;border-radius:50%;border:7px solid #e6dec9;display:flex;align-items:center;justify-content:center;flex-direction:column;margin:24px auto}.focus-circle strong{font-size:29px;font-weight:500;letter-spacing:1px;font-variant-numeric:tabular-nums}.focus-circle small{color:#a99c82;font-size:11px;margin-top:5px}.focus-select{font-size:12px;background:#fffdf8;padding:8px}.full{width:100%}.recent-row{border-bottom:1px solid var(--line);padding:14px 0;display:flex;gap:13px;align-items:center}.recent-row:last-child{border:0}.recent-row h4{font-size:13px;font-weight:500;margin-bottom:5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.recent-row p{font-size:11px;color:var(--muted)}.hint-box{border-left:3px solid #d8ba7b;background:#fbf7ec;border-radius:0 10px 10px 0;padding:12px 15px;font-size:12px;line-height:1.8;color:#897755}.footer-note{font-size:11px;color:#a0aaa0;text-align:center;margin-top:30px;line-height:1.8}
.chat-layout{display:grid;grid-template-columns:210px minmax(0,1fr);gap:18px;height:calc(100vh - 146px);min-height:550px}.chat-history{border:1px solid var(--line);border-radius:17px;background:#fff;padding:16px;overflow-y:auto}.history-item{display:block;width:100%;text-align:left;margin-top:8px;border-radius:9px;padding:12px;color:#728476;font-size:12px;line-height:1.6;overflow:hidden}.history-item:hover,.history-item.active{background:var(--mint);color:var(--green)}.history-item strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:500}.history-item small{display:block;font-size:10px;color:#9aa594;margin-top:5px}.chat-main{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:18px;min-width:0;overflow:hidden}.chat-toolbar{padding:16px 22px;border-bottom:1px solid var(--line);gap:8px;display:flex;align-items:center;flex-wrap:wrap}.chat-toolbar select{width:auto;max-width:140px;font-size:12px;padding:8px}.chat-scroll{flex:1;overflow-y:auto;padding:22px 28px;scroll-behavior:smooth}.chat-welcome{max-width:610px;text-align:center;margin:20px auto}.chat-welcome .brand-mark{margin:0 auto 18px;width:57px;height:57px;border-radius:18px}.chat-welcome h2{font-size:24px;margin-bottom:12px}.chat-welcome>p{font-size:13px;color:var(--muted);line-height:1.9}.starter-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:30px;text-align:left}.starter{border:1px solid var(--line);border-radius:12px;padding:16px;background:#fcfdf9;font-size:12px;line-height:1.8;text-align:left;transition:border .15s}.starter:hover{border-color:#91b7a1}.starter strong{font-size:13px;display:block;margin-bottom:4px}.message{margin-bottom:26px;max-width:95%}.message.user{margin-left:auto;max-width:85%;width:fit-content}.message.user .message-body{background:#eef4eb;padding:13px 18px;border-radius:16px 4px 16px 16px}.message.user .prose{font-size:14px;white-space:pre-wrap}.message.assistant .message-body{padding-left:39px}.message-label{display:flex;align-items:center;gap:9px;font-size:12px;color:#78917e;margin-bottom:10px}.message-label .brand-mark{width:29px;height:29px;border-radius:9px}.message-actions{display:flex;align-items:center;gap:7px;margin-top:12px}.message-actions button{font-size:11px;color:#8b9d8e;padding:5px 7px;border-radius:6px}.message-actions button:hover{background:var(--mint);color:var(--green)}.prose{font-size:14px;line-height:1.95;overflow-wrap:anywhere}.prose p{margin:0 0 12px}.prose p:last-child{margin:0}.prose h1,.prose h2,.prose h3{font-size:17px;margin:18px 0 10px}.prose ul,.prose ol{padding-left:24px;margin:10px 0}.prose pre{overflow:auto;background:#f3f5ef;padding:16px;border-radius:9px;font-size:12px;white-space:pre-wrap}.prose blockquote{border-left:3px solid #a4bd9f;padding-left:15px;margin:12px 0;color:#76876e}.prose table{border-collapse:collapse;display:block;overflow-x:auto;font-size:13px}.prose td,.prose th{border:1px solid var(--line);padding:7px 12px}.prose code{font-size:12px;background:#f2f5ed;border-radius:4px;padding:2px 4px}.prose .katex{font-size:1.1em}.prose .katex-display{overflow-x:auto;overflow-y:hidden;padding:5px 0}.composer-wrap{padding:12px 22px 15px;border-top:1px solid #eef1ea;background:#fff}.composer{border:1px solid #dce5d8;background:#fbfcf9;border-radius:14px;padding:12px}.composer:focus-within{border-color:#87af99}.composer textarea{border:0;background:transparent;padding:0;min-height:52px;max-height:160px;outline:none!important;font-size:14px}.composer-actions{display:flex;justify-content:space-between;align-items:center;margin-top:5px}.composer .icon-btn{color:#8aa08b}.composer-help{font-size:10px;text-align:center;color:#a2aba0;margin-top:9px}.attachment-chip{display:inline-flex;gap:7px;align-items:center;padding:6px 9px;margin:0 6px 8px 0;background:#eef4e9;border-radius:7px;font-size:11px}.message-attachments{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}.message-attachments img{max-width:200px;max-height:160px;border-radius:9px}.chat-error{border:1px solid #efd7cd;background:#fff7f2;padding:10px 14px;border-radius:9px;color:#aa6c54;font-size:12px;margin:8px 0}.thinking{display:flex;gap:9px;align-items:center;color:#8a9b8b;font-size:12px}
.panel-tabs{display:flex;gap:8px;margin:20px 0}.tab{padding:9px 16px;border-radius:9px;color:#8b998e;background:white;border:1px solid var(--line);font-size:12px}.tab.active{background:var(--green);color:white;border-color:var(--green)}.filter-row{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:20px}.filter-row input{max-width:280px}.filter-row select{max-width:160px}.quiz-intro{max-width:650px}.quiz-form{max-width:720px}.quiz-form label{font-size:13px}.quiz-question{padding:26px;margin-bottom:18px}.question-number{width:30px;height:30px;display:grid;place-content:center;background:var(--mint);color:var(--green);border-radius:9px;font-weight:650;flex-shrink:0}.question-title{display:flex;align-items:flex-start;gap:13px;margin-bottom:20px}.quiz-option{display:flex;align-items:flex-start;gap:12px;width:100%;text-align:left;border:1px solid var(--line);padding:13px 16px;border-radius:10px;margin:9px 0;line-height:1.65;background:#fcfdf9;font-size:13px}.quiz-option .letter{border:1px solid #dde6d9;border-radius:6px;min-width:24px;height:24px;display:grid;place-content:center;font-size:11px;color:#92a18d}.quiz-option.selected{background:#edf4e8;border-color:#82ab8b}.quiz-option.correct{background:#eef6ec;border-color:#82ad88}.quiz-option.wrong{background:#fff1ec;border-color:#d6a392}.answer-explanation{background:#f5f8ef;border-radius:10px;padding:15px;margin-top:16px;line-height:1.8;font-size:13px}.quiz-result{display:flex;align-items:center;gap:25px;background:#eaf2e5;padding:28px;border-radius:18px;margin-bottom:24px}.quiz-result .score{font-size:38px;color:var(--green);font-weight:650}.quiz-result h2{margin-bottom:8px}.quiz-result p{font-size:13px;color:#7d9179}.table-list{width:100%;border-collapse:collapse;font-size:13px}.table-list th{text-align:left;color:#9aa58f;font-size:11px;font-weight:500;padding:12px;border-bottom:1px solid var(--line)}.table-list td{padding:16px 12px;border-bottom:1px solid var(--line)}.table-list tr:last-child td{border:0}.mistake-card{margin-bottom:16px}.mistake-card .prose{font-size:13px;margin:18px 0}.mistake-answer{background:#f6f8f0;border-radius:10px;padding:16px;margin:15px 0}.review-actions{display:flex;gap:9px;flex-wrap:wrap}.empty{text-align:center;padding:42px 20px;color:#7a8e7c}.empty-icon{width:65px;height:65px;display:grid;place-content:center;margin:0 auto 18px;background:#f1f5eb;border-radius:20px;color:#98b08f}.empty h3{font-size:16px;font-weight:550;margin-bottom:10px;color:#647d65}.empty p{font-size:12px;line-height:1.9;max-width:400px;margin:0 auto 17px}.file-card{border:1px solid var(--line);border-radius:15px;padding:20px;background:#fff;display:flex;flex-direction:column;gap:14px}.file-card h3{font-size:14px;overflow-wrap:anywhere;line-height:1.65}.file-card .file-icon{color:#84a18a;background:#edf4ea;width:41px;height:45px;border-radius:10px;display:grid;place-content:center}.file-card p{font-size:11px;color:#9aa592;line-height:1.7}.note-preview{line-height:1.8;font-size:12px;color:#91a08e;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;white-space:pre-wrap}.bars{display:flex;align-items:flex-end;height:170px;gap:9px;padding:12px 0 0}.bar-column{flex:1;min-width:0;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;height:100%;gap:7px}.bar{width:100%;max-width:30px;background:#a8c3a0;min-height:3px;border-radius:5px 5px 0 0}.bar-column small{font-size:9px;color:#a3ae9d}.bar-column .bar-value{font-size:10px;color:#718a6d}.subject-progress{margin:21px 0}.progress-track{height:7px;background:#eff3e9;border-radius:20px;margin-top:10px;overflow:hidden}.progress-fill{height:100%;background:#8db08c;border-radius:20px}.badge-card{background:#fff;border:1px solid var(--line);border-radius:15px;padding:22px;text-align:center;opacity:.45;filter:grayscale(1)}.badge-card.earned{opacity:1;filter:none;background:#fffcf3;border-color:#eddfb8}.badge-card .badge-icon{color:#b99a58;margin-bottom:12px}.badge-card h3{font-size:13px;margin-bottom:7px}.badge-card p{font-size:11px;line-height:1.7;color:#a7a28f}.settings-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:22px}.settings-grid h2{margin-bottom:23px}.settings-grid .hint-box{margin:18px 0}.toggle-row{display:flex;align-items:center;justify-content:space-between;margin:20px 0}.settings-note{font-size:12px;color:#83917d;line-height:1.9}.login-page{min-height:100vh;display:grid;grid-template-columns:1.05fr 1fr;background:#fafbf6}.login-story{background:#eaf1e5;padding:70px 12%;display:flex;flex-direction:column;justify-content:center;position:relative}.login-story .brand{margin:0 0 45px}.login-story h1{font-size:39px;line-height:1.6;letter-spacing:-1px}.login-story>p{font-size:14px;color:#7b9179;line-height:1.9;margin:22px 0}.login-story .owl{max-width:310px;width:70%;margin:15px auto 0}.login-form-wrap{display:flex;align-items:center;justify-content:center;padding:40px}.login-form{max-width:370px;width:100%}.login-form h2{font-size:27px;margin-bottom:12px}.login-form>p{color:#9aa58e;font-size:13px;line-height:1.7}.login-tabs{display:flex;background:#edf1e6;padding:5px;border-radius:11px;margin:28px 0 24px}.login-tabs button{flex:1;padding:10px;border-radius:7px;font-size:13px;color:#8b9c80}.login-tabs .active{background:white;box-shadow:0 2px 8px #45583a0a;color:#366b50}.login-note{font-size:11px;color:#a0aa96;line-height:1.9;margin-top:26px}.error-text{color:var(--red);font-size:12px;line-height:1.7;margin:10px 0}.modal-backdrop{position:fixed;inset:0;background:#1e352d55;backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;padding:24px;z-index:60}.modal{width:100%;max-width:570px;max-height:90vh;overflow-y:auto;background:#fff;border-radius:21px;padding:28px;box-shadow:0 20px 90px #1d39232a;animation:enter .2s}.modal.wide{max-width:850px}.modal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.modal-head h2{font-size:21px}.modal-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:24px}.modal .hint-box{margin-bottom:20px}#toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%) translateY(15px);background:#2a4e3d;color:#fff;padding:13px 22px;border-radius:11px;box-shadow:0 5px 25px #20392820;z-index:100;font-size:13px;opacity:0;pointer-events:none;transition:.2s;max-width:90vw}#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}.loading-panel{display:flex;align-items:center;justify-content:center;gap:14px;padding:45px;color:#879a7f}.loading-panel .spinner{margin:0}.offline-panel{text-align:center;padding:70px 20px}.floating-focus{position:fixed;right:25px;bottom:24px;z-index:30;background:var(--green);color:white;box-shadow:0 4px 20px #213c3e20;border-radius:14px;padding:12px 18px;display:flex;align-items:center;gap:12px;font-variant-numeric:tabular-nums}.button-group{display:flex;gap:9px;flex-wrap:wrap}.no-margin{margin:0}.print-only{display:none}
@media(min-width:1500px){.content{padding-top:40px}.hero{min-height:260px}.hero .owl{right:55px;width:285px;height:250px}.subject-card{padding:25px}}
@media(max-width:1200px){.shell{padding-left:206px}.sidebar{width:206px;padding-left:14px;padding-right:14px}.content{padding:26px}.topbar{padding:0 26px}.home-columns{grid-template-columns:minmax(0,1fr) 270px;gap:18px}.stat-card{padding:15px 12px;gap:9px}.stat-icon{width:34px;height:34px}.stat-value{font-size:23px}.subject-card{padding:17px}.chat-layout{grid-template-columns:180px minmax(0,1fr)}.chat-scroll{padding:20px}.hero h2{font-size:25px}.hero .owl{width:220px}.hero-copy{max-width:65%}}
@media(max-width:1020px){.home-columns{grid-template-columns:1fr}.home-right{display:grid;grid-template-columns:1fr 1fr;gap:18px}.home-right .card{margin:0}.sidebar-note{display:none}.hero .owl{right:20px}.grid3{grid-template-columns:1fr 1fr}.settings-grid{grid-template-columns:1fr}.chat-history{display:none}.chat-layout{grid-template-columns:1fr}.chat-toolbar .history-toggle{display:inline-flex!important}.top-date{display:none}.login-story{padding:45px 10%}.login-story h1{font-size:31px}}
@media(max-width:760px){:root{font-size:14px}.shell{padding-left:0}.sidebar{transform:translateX(-100%);transition:transform .2s;width:234px;box-shadow:12px 0 40px #25392d1a}.shell.menu-open .sidebar{transform:translateX(0)}.mobile-menu{display:inline-flex}.topbar{height:65px;padding:0 17px}.breadcrumb{font-size:11px}.top-tools{gap:6px}.content{padding:22px 16px 32px}h1{font-size:23px}.page-head{margin-bottom:22px}.page-head p{font-size:12px}.hero{min-height:218px;padding:23px}.hero-copy{max-width:70%}.hero h2{font-size:23px}.hero p{font-size:11px;max-width:210px}.hero .owl{right:-42px;width:195px;height:180px;bottom:0;opacity:.9}.hero .eyebrow{font-size:9px;letter-spacing:1px}.hero .btn{font-size:12px;padding:9px 12px}.stats-row{grid-template-columns:1fr 1fr;gap:10px;margin-bottom:23px}.stat-card{padding:16px}.subject-grid{gap:10px}.subject-card{padding:16px 12px}.subject-card h3{font-size:14px}.subject-card p{font-size:10px}.subject-card .subject-symbol{width:36px;height:36px;margin-bottom:14px}.home-right{grid-template-columns:1fr}.grid2,.grid3{grid-template-columns:1fr}.card{padding:19px;border-radius:17px}.section-heading h2{font-size:16px}.chat-layout{height:calc(100dvh - 95px);min-height:430px;gap:0}.content:has(.chat-layout){padding:15px 10px}.chat-toolbar{padding:12px;gap:7px}.chat-toolbar select{max-width:125px;font-size:11px;padding:7px}.chat-scroll{padding:16px 13px}.chat-welcome{margin-top:20px}.chat-welcome h2{font-size:21px}.chat-welcome>p{font-size:12px}.starter-grid{gap:9px;margin-top:22px}.starter{padding:12px;font-size:11px}.starter strong{font-size:12px}.composer-wrap{padding:10px}.message{max-width:100%}.message.assistant .message-body{padding-left:9px}.message.user{max-width:92%}.composer-help{font-size:9px}.quiz-question{padding:18px}.question-title{gap:9px}.quiz-option{padding:12px}.table-list{font-size:11px}.table-list th,.table-list td{padding:12px 6px}.table-list .hide-mobile{display:none}.login-page{grid-template-columns:1fr}.login-story{padding:25px 30px 20px}.login-story .brand{margin-bottom:18px}.login-story h1{font-size:26px}.login-story>p{font-size:12px;margin:12px 0}.login-story .owl{display:none}.login-form-wrap{padding:30px 25px 45px}.login-form h2{font-size:23px}.modal-backdrop{padding:12px}.modal{padding:22px;max-height:94dvh}.filter-row{gap:8px}.filter-row input{max-width:none}.filter-row select{max-width:130px}.quiz-result{padding:20px;gap:18px}.bars{gap:5px}.floating-focus{right:14px;bottom:16px;font-size:12px}.button-group .btn{padding:9px 12px;font-size:12px}}
@media print{.sidebar,.topbar,.btn,.icon-btn,.message-actions,.composer-wrap,.chat-history,.footer-note,.floating-focus,#toast,.modal-backdrop{display:none!important}.shell{padding:0}.content{padding:0;max-width:none}.card{box-shadow:none;break-inside:avoid;border:1px solid #ddd}.chat-layout{display:block;height:auto}.chat-main{border:0}.chat-scroll{overflow:visible}.chat-toolbar{display:none}.print-only{display:block}body{background:white}.prose{color:#111}.mistake-answer{display:block!important}}
.quiz-option:disabled{opacity:1;cursor:default}.quiz-option.correct .letter{background:var(--green);border-color:var(--green);color:white}.quiz-option.wrong .letter{background:#b97560;border-color:#b97560;color:white}