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.question-figure{display:block;max-width:min(72%,760px);max-height:260px;margin:14px auto;object-fit:contain;border-radius:12px;box-shadow:0 8px 24px rgba(23,35,58,.12)}
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button{border:0;background:#eff1f4;border-radius:50%;width:30px;height:30px;font-size:20px;cursor:pointer}.sim-stage{height:170px;background:#f4f6f8;border-radius:10px;position:relative;overflow:hidden;margin-bottom:18px}.sim-track{position:absolute;left:20px;right:20px;top:110px;height:2px;background:#536177}.sim-ball{position:absolute;top:69px;width:42px;height:42px;border-radius:50%;display:grid;place-items:center;font:10px "DM Mono";transition:left .8s ease}.sim-a{left:35px;background:#f29a70}.sim-b{left:285px;background:#78a0e7}.sim-controls label{display:grid;grid-template-columns:100px 1fr 38px;align-items:center;gap:8px;font-size:10px;margin:13px 0}.sim-controls input{accent-color:var(--blue)}.sim-controls output{font:9px "DM Mono"}.primary-btn{width:100%;border:0;background:var(--ink);color:#fff;border-radius:8px;height:38px;cursor:pointer;margin-top:8px}.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:15px}.result-grid 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.login-screen{position:fixed;inset:0;z-index:100;background:#f4f6f8;display:grid;grid-template-columns:minmax(320px,42%) 1fr}.login-screen.hidden{display:none!important}.login-visual{background:#172943;color:#fff;padding:8vh 8vw;display:flex;flex-direction:column;justify-content:center;position:relative;overflow:hidden}.login-visual:after{content:"";position:absolute;width:430px;height:430px;border:1px solid rgba(255,255,255,.08);border-radius:50%;right:-230px;bottom:-150px;box-shadow:0 0 0 80px rgba(255,255,255,.025),0 0 0 160px rgba(255,255,255,.018)}.login-brand-mark{width:48px;height:48px;border-radius:13px;background:#fff;color:#172943;display:grid;place-items:center;font:24px serif;margin-bottom:9px}.login-visual>span{font-size:11px;letter-spacing:.22em;color:#9eb5d0}.login-visual h1{font-size:38px;line-height:1.35;margin:7vh 0 14px;letter-spacing:.04em}.login-visual>p{color:#b5c3d2;font-size:12px;line-height:1.8;max-width:350px;margin-bottom:5vh}.login-feature{display:flex;align-items:center;gap:14px;padding:11px 0;border-top:1px solid rgba(255,255,255,.1);max-width:340px;font-size:11px;color:#dce4ee}.login-feature b{font:500 9px "DM Mono";color:#ef875e}.login-card-wrap{display:grid;place-items:center;padding:25px;overflow:auto}.login-card{width:min(390px,100%);background:#fff;padding:38px 42px;border-radius:14px;box-shadow:0 18px 50px rgba(24,39,61,.1)}.login-eyebrow{font:500 9px "DM Mono";letter-spacing:.17em;color:var(--orange)}.login-card h2{font-size:25px;margin:6px 0}.login-card>p{font-size:11px;color:#8a93a1;margin:0 0 23px}.login-card label{display:block;font-size:10px;font-weight:600;margin:13px 0;color:#4c5769}.login-card input{display:block;width:100%;height:41px;border:1px solid #dce1e8;border-radius:7px;margin-top:6px;padding:0 12px;outline:0;font:12px "Noto Sans SC"}.login-card input:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(39,95,223,.1)}.login-submit{width:100%;height:42px;border:0;border-radius:7px;background:#1a2c46;color:#fff;font-size:11px;font-weight:600;margin-top:7px;cursor:pointer}.login-submit span{float:right;margin-right:8px}.keyboard-toggle{width:100%;border:0;background:transparent;color:#657187;font-size:10px;margin-top:10px;cursor:pointer}.login-error{min-height:16px;font-size:9px;color:#d64c38}.soft-keyboard{display:grid;grid-template-columns:repeat(10,1fr);gap:3px;margin-top:8px}.soft-keyboard button{height:27px;border:1px solid #dfe3e9;background:#f8f9fb;border-radius:4px;font-size:9px;padding:0;cursor:pointer}.soft-keyboard .wide{grid-column:span 2}.demo-accounts{margin-top:17px;padding-top:13px;border-top:1px solid #edf0f3;display:flex;align-items:center;gap:5px}.demo-accounts>span{font-size:8px;color:#9aa2ae;flex:1}.demo-accounts button{border:1px solid #e0e4ea;background:#fff;border-radius:5px;padding:4px 6px;font-size:8px;cursor:pointer}.identity-pill{border:0;background:#eef2f7;border-radius:7px;padding:6px 9px;font-size:9px;cursor:pointer;max-width:80px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.quick-actions.four{grid-template-columns:repeat(4,1fr);gap:4px}.quick-actions.four button{padding:0 2px}
.record-control{color:#d74b3a;font-size:12px}.record-control.active{background:#fff0ed;border-color:#e7a79c;animation:pulseRecord 1.3s infinite}@keyframes pulseRecord{50%{box-shadow:0 0 0 4px rgba(215,75,58,.1)}}body[data-role="student"] .record-control{display:none}
.reveal-answer{width:100%;height:31px;border:1px solid #d9e2f1;background:#f5f8fd;color:var(--blue);border-radius:6px;font-size:9px;margin-top:9px;cursor:pointer}.reveal-answer span{float:right;margin-right:6px;font:9px "DM Mono"}.answer-preview{font-size:9px;line-height:1.65;color:#536074}.answer-step{margin-top:7px;padding:7px 8px;border-left:2px solid var(--blue);background:#f7f9fc;border-radius:0 4px 4px 0}.answer-step b{color:var(--blue);margin-right:5px}
.import-summary{font-size:10px;color:#6e7889;margin-bottom:12px}.import-draft{border:1px solid #e0e5eb;border-radius:8px;padding:11px;margin:8px 0;display:grid;grid-template-columns:20px 1fr;gap:5px 8px}.import-draft input{accent-color:var(--blue)}.import-draft strong{font-size:11px}.import-draft p{grid-column:2;font-size:9px;color:#667185;line-height:1.6;margin:0}.import-warning{grid-column:2;color:#b46a22!important;background:#fff8ed;padding:5px 7px;border-radius:4px}.import-publish{width:100%;height:37px;border:0;border-radius:7px;background:var(--ink);color:#fff;font-size:10px;margin-top:12px;cursor:pointer}
.note-card{background:linear-gradient(135deg,#f6fbf8,#fff)}.note-section{border-bottom:1px solid #e6e9ed;padding:13px 0}.note-section h3{font-size:12px;margin:0 0 6px}.note-section p{font-size:9px;color:#667185;line-height:1.65}.method-chip{display:block;background:#eef7f3;color:#26725b;border-radius:5px;padding:6px 8px;margin:5px 0;font-size:9px}
@media(max-width:760px){.login-screen{grid-template-columns:1fr}.login-visual{display:none}.login-card-wrap{padding:13px}.login-card{padding:28px 25px}.session-actions .identity-pill{display:none}}
.bank-toolbar{display:flex;align-items:center;gap:8px;margin-bottom:14px}.bank-toolbar input{flex:1;min-width:0;height:36px;border:1px solid #d8dee6;border-radius:8px;padding:0 12px;font:inherit}.bank-toolbar button{height:36px;border:0;background:var(--ink);color:#fff;border-radius:8px;padding:0 14px;cursor:pointer}.bank-stat{margin-left:auto;font-size:11px;color:#667085;background:#f3f5f8;border-radius:8px;padding:8px 10px;white-space:nowrap}.bank-stat b{font:600 12px "DM Mono";color:var(--ink)}.bank-layout{display:grid;grid-template-columns:1fr 1fr;gap:12px;min-height:0}.bank-results,.bank-detail{min-height:420px;border:1px solid #e5e9ef;border-radius:10px;background:#fbfcfe;overflow:auto;padding:10px}.bank-item{width:100%;border:1px solid #e2e8f0;background:#fff;border-radius:10px;padding:10px;text-align:left;cursor:pointer;display:block;margin-bottom:8px}.bank-item:hover,.bank-item.active{border-color:var(--blue);box-shadow:0 0 0 1px rgba(37,99,235,.08)}.bank-item strong{display:block;font-size:12px;margin-bottom:4px}.bank-item span{display:block;font-size:9px;color:#8590a0;margin-bottom:6px}.bank-item p{font-size:10px;line-height:1.55;color:#556070;margin:0}.bank-empty{margin:0;padding:14px;font-size:11px;color:#7b8794}.bank-detail-head strong{display:block;font-size:13px}.bank-detail-head span{display:block;font-size:10px;color:#6c7887;margin-top:3px}.bank-meta{font:400 10px "DM Mono";color:#8993a2;margin:10px 0 12px}.bank-preview{font-size:11px;line-height:1.6;color:#465165;background:#eef3fb;border-radius:8px;padding:10px;margin:0 0 12px}.bank-json{font:400 10px "DM Mono";white-space:pre-wrap;word-break:break-word;background:#fff;border:1px solid #e5e9ef;border-radius:8px;padding:10px;margin:0 0 10px;max-height:240px;overflow:auto}
.bank-layout{grid-template-columns:1fr}.bank-results,.bank-detail{min-height:220px}.bank-actions{display:flex;gap:8px;margin:0 0 12px}.bank-actions button{flex:1;height:34px;border:0;border-radius:8px;background:#172943;color:#fff;cursor:pointer}.bank-actions button:last-child{background:#eef3fb;color:#172943}.auto-analysis{border:1px solid #e5e9ef;border-radius:10px;background:#fff;padding:10px;margin:0 0 12px}.auto-analysis>strong{display:block;font-size:12px;margin-bottom:8px}.auto-tag-row{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:10px}.auto-tag-chip{display:inline-flex;align-items:center;padding:4px 8px;border-radius:999px;background:#edf3ff;color:#2447a6;font-size:9px}.auto-candidate-list{display:grid;gap:8px}.auto-candidate{border:1px solid #e4e8ee;border-radius:8px;background:#fafbfd;padding:8px}.auto-candidate-head{display:flex;align-items:flex-start;gap:8px}.auto-candidate-head input{margin-top:2px}.auto-candidate-title{font-size:10px;font-weight:600;color:#314059;margin-bottom:4px}.auto-candidate p{margin:6px 0 0;font-size:9px;line-height:1.5;color:#566070}.auto-candidate-btn-row{display:flex;gap:6px;margin-top:8px}.auto-candidate-btn{flex:1;border:0;background:#172943;color:#fff;border-radius:6px;height:28px;padding:0 10px;font-size:9px;cursor:pointer}.auto-candidate-btn.secondary{background:#eef3fb;color:#172943}.tag-tree{display:grid;gap:8px;max-height:320px;overflow:auto;padding:4px 0 10px}.tag-tree-item{display:flex;align-items:center;gap:8px;padding-left:calc(var(--depth, 0) * 14px);font-size:11px}.tag-tree-item input{accent-color:var(--blue)}.tag-tree-actions{display:flex;gap:8px;margin-top:10px}.tag-tree-actions .secondary-btn{flex:1;height:34px;border:1px solid #d9e2f1;background:#fff;color:#172943;border-radius:8px;cursor:pointer}.tag-tree-actions .primary-btn{flex:1;height:34px;margin-top:0}.pdf-preview{border:1px solid #e5e9ef;border-radius:10px;background:#fff;padding:10px;margin:0 0 12px}.pdf-preview>strong{display:block;font-size:12px;margin-bottom:8px}.pdf-page-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:8px}.pdf-page-card{border:1px solid #e4e8ee;border-radius:8px;background:#fdfefe;padding:8px}.pdf-page-card img{width:100%;aspect-ratio:3/4;object-fit:contain;background:#f4f6f8;border-radius:6px}.pdf-page-label{font-size:9px;color:#6d7888;margin-top:6px}.pdf-page-card p{font-size:9px;line-height:1.5;color:#566070;margin:6px 0 0;max-height:54px;overflow:hidden}
.drawer.bank-mode{width:min(920px,calc(100vw - 68px))}.drawer.bank-mode .bank-layout{grid-template-columns:minmax(260px,.8fr) minmax(360px,1.2fr)}.drawer.bank-mode .bank-results,.drawer.bank-mode .bank-detail{min-height:calc(100vh - 245px);max-height:calc(100vh - 245px)}
body.question-bank-workspace .drawer.bank-mode{width:calc(100vw - 68px);box-shadow:none;transition:transform .2s ease;padding:24px 32px}body.question-bank-workspace .drawer.bank-mode .bank-layout{grid-template-columns:minmax(300px,.7fr) minmax(480px,1.3fr)}body.question-bank-workspace .drawer.bank-mode .bank-results,body.question-bank-workspace .drawer.bank-mode .bank-detail{min-height:calc(100vh - 245px);max-height:calc(100vh - 245px)}
@media(max-width:900px){.drawer.bank-mode{width:calc(100vw - 68px)}.drawer.bank-mode .bank-layout{grid-template-columns:1fr}.drawer.bank-mode .bank-results,.drawer.bank-mode .bank-detail{min-height:220px;max-height:none}.bank-toolbar{flex-wrap:wrap}.bank-toolbar input{flex-basis:100%}.bank-stat{margin-left:0}}
@media(max-width:900px){body.question-bank-workspace .drawer.bank-mode .bank-layout{grid-template-columns:1fr}body.question-bank-workspace .drawer.bank-mode .bank-results,body.question-bank-workspace .drawer.bank-mode .bank-detail{min-height:220px;max-height:none}}
@media(max-width:760px){.drawer.bank-mode,body.question-bank-workspace .drawer.bank-mode{width:calc(100vw - 54px);padding:20px 24px}}
.pdf-open-btn{height:30px;border:1px solid #cad6e8;background:#eef3fb;color:#172943;border-radius:7px;padding:0 12px;font-size:10px;cursor:pointer;margin:0 0 10px}.pdf-open-btn:disabled{opacity:.55;cursor:wait}
.pdf-preview-status{margin:0 0 10px;font-size:10px;line-height:1.5;color:#677386}
.pdf-page-badge{display:inline-flex;align-items:center;align-self:flex-start;font:500 8px "DM Mono";letter-spacing:.08em;text-transform:uppercase;border-radius:999px;padding:3px 6px;margin-top:6px;background:#eef3fb;color:#2447a6}
.layout-analysis{border:1px solid #e5e9ef;border-radius:10px;background:#fff;padding:10px;margin:0 0 12px}.layout-analysis>strong{display:block;font-size:12px;margin-bottom:8px}.layout-analysis-list{display:grid;gap:8px}.layout-analysis-item{border:1px solid #e5e9ef;border-radius:8px;background:#fbfcfe;padding:8px}.layout-analysis-item b{display:block;font-size:11px}.layout-analysis-item span{display:block;font-size:9px;color:#667185;margin-top:3px}.layout-analysis-blocks{display:flex;flex-wrap:wrap;gap:5px;margin-top:8px}.layout-chip{display:inline-flex;align-items:center;max-width:100%;border-radius:999px;padding:3px 7px;font-size:8px;line-height:1.3;background:#f3f6fb;color:#44546b}.layout-chip.formula{background:#fff4e8;color:#b55a13}.layout-chip.figure{background:#eef8f2;color:#1d7a4e}
.layout-chip{border:0;cursor:pointer}.layout-chip:hover{filter:brightness(.98)}
.block-editor{display:grid;gap:12px;margin:10px 0 8px}.block-editor label{display:grid;gap:6px;font-size:10px;color:#556070}.block-editor input,.block-editor textarea{width:100%;border:1px solid #dce2ea;border-radius:8px;padding:10px 11px;font:11px "Noto Sans SC",sans-serif;color:#172943;background:#fff}.block-editor textarea{resize:vertical;min-height:120px}.block-editor-actions{display:flex;gap:8px;justify-content:flex-end;margin-top:6px}.block-editor-actions .secondary-btn{height:34px;border:1px solid #d9e2f1;background:#fff;color:#172943;border-radius:8px;padding:0 12px;cursor:pointer}.block-editor-actions .primary-btn{width:auto;height:34px;margin-top:0;padding:0 14px}
.block-preview{border:1px solid #dce2ea;border-radius:8px;background:#f8fbff;padding:10px;font-size:11px;line-height:1.6;color:#1d2d4d}.figure-preview{min-height:44px;background:#f8fafc}.formula-preview{font-family:"Times New Roman",serif;font-size:14px;letter-spacing:0}
.formula-render{display:inline-flex;align-items:center;max-width:100%;overflow:auto;vertical-align:middle}.formula-render math{font-size:1.05em;line-height:1.2}.formula-render-block{display:block}.formula-render-block math{font-size:1.15em}.formula-fallback{font-family:"Times New Roman",serif}
.formula-strip{display:grid;gap:8px;margin:10px 0 0}.formula-chip{border:1px solid #cfdaf0;background:#f6f9ff;color:#1d3667;border-radius:8px;padding:8px 10px;font:500 10px "DM Mono";line-height:1.5;word-break:break-word}.formula-chip .formula-render{display:inline-flex;max-width:100%}.formula-chip .formula-render math{font-size:1em}
.login-method-tabs{display:grid;grid-template-columns:1fr 1fr;gap:4px;background:#f1f3f6;border-radius:8px;padding:3px;margin:0 0 16px}.login-method-tabs button{height:32px;border:0;border-radius:6px;background:transparent;color:#687386;font-size:10px;cursor:pointer}.login-method-tabs button.active{background:#fff;color:#172943;font-weight:600;box-shadow:0 1px 4px rgba(23,35,58,.1)}.mini-program-login{text-align:center;padding:4px 0 2px}.mini-program-qr{width:210px;height:210px;margin:0 auto 12px;border:1px solid #e2e7ed;border-radius:8px;padding:8px;background:#fff}.mini-program-qr img{display:block;width:100%;height:100%}.mini-program-login strong{font-size:13px}.mini-program-login p{font-size:10px;color:#7a8493;margin:6px 0 12px}.mini-program-login>button{border:0;background:transparent;color:var(--blue);font-size:10px;cursor:pointer}
.topic-workbench{position:fixed;inset:0;z-index:95;background:#f5f7fb;display:flex;flex-direction:column;overflow:hidden}.topic-workbench.hidden{display:none!important}.topic-topbar{height:72px;background:#fff;border-bottom:1px solid var(--line);display:grid;grid-template-columns:minmax(240px,320px) 1fr auto;align-items:center;padding:0 18px;gap:12px}.topic-topbar-mid{display:flex;align-items:center;justify-content:center;gap:12px}.topic-status{font-size:11px;color:#2c6b4f;background:#edf8f3;border:1px solid #cfe8dd;border-radius:999px;padding:7px 11px}.topic-topbar-actions{display:flex;gap:8px}.topic-action,.topic-basket-import,.topic-panel-actions button{height:34px;border:0;border-radius:8px;background:#172943;color:#fff;padding:0 12px;font-size:11px;cursor:pointer}.topic-action.secondary,.topic-panel-actions .secondary{background:#edf3fb;color:#172943}.topic-grid{min-height:0;flex:1;display:grid;grid-template-columns:minmax(280px,.9fr) minmax(360px,1.2fr) minmax(260px,.75fr);gap:12px;padding:12px}.topic-panel{min-height:0;background:#fff;border:1px solid var(--line);border-radius:10px;padding:12px;overflow:auto}.topic-panel-head{display:flex;flex-direction:column;gap:3px;margin-bottom:10px}.topic-panel-head strong{font-size:13px}.topic-panel-head span{font-size:9px;color:#7b8493}.topic-source textarea{width:100%;min-height:calc(100% - 112px);resize:none;border:1px solid #dce2ea;border-radius:8px;padding:10px;font:11px "Noto Sans SC",sans-serif;color:#172943;background:#fff;outline:0}.topic-source textarea:focus{border-color:var(--blue);box-shadow:0 0 0 3px rgba(39,95,223,.1)}.topic-panel-actions{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}.topic-hint{margin-top:10px;font-size:10px;color:#6f7a8b;line-height:1.5}.topic-results-list{display:grid;gap:8px}.topic-result-card{border:1px solid #e1e7ef;border-radius:8px;background:#fbfcfe;padding:10px}.topic-result-head{display:flex;justify-content:space-between;gap:8px;align-items:start}.topic-result-head strong{font-size:12px}.topic-result-head span{font-size:9px;color:#788294;text-align:right}.topic-result-card p{font-size:10px;line-height:1.55;color:#515d6e;margin:6px 0 0}.topic-result-actions{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-top:10px;flex-wrap:wrap}.topic-result-check{display:inline-flex;align-items:center;gap:5px;font-size:10px;color:#4d5664}.topic-result-check input{accent-color:var(--blue)}.topic-result-actions button{height:30px;border:0;border-radius:7px;background:#eef3fb;color:#172943;padding:0 10px;font-size:10px;cursor:pointer}.topic-basket-list{display:grid;gap:8px}.topic-basket-item{border:1px solid #e1e7ef;border-radius:8px;background:#fff;padding:10px}.topic-basket-item strong{display:block;font-size:12px}.topic-basket-item span{display:block;font-size:9px;color:#798395;margin-top:3px}.topic-basket-item p{font-size:10px;line-height:1.55;color:#536072;margin:6px 0 0}.topic-basket-actions{display:flex;gap:6px;margin-top:8px}.topic-basket-actions button{height:28px;border:0;border-radius:6px;background:#eef3fb;color:#172943;padding:0 10px;font-size:9px;cursor:pointer}.topic-basket-import{width:100%;margin-top:10px}
@media(max-width:1100px){.topic-topbar{grid-template-columns:1fr;justify-items:stretch;height:auto;padding:12px 14px}.topic-topbar-mid{justify-content:flex-start;flex-wrap:wrap}.topic-topbar-actions{justify-content:flex-start;flex-wrap:wrap}.topic-grid{grid-template-columns:1fr;overflow:auto}.topic-source textarea{min-height:240px}.topic-workbench{overflow:auto}}