:root{color:#25231f;font-synthesis:none;text-rendering:optimizelegibility;background:#f6f3ed;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:#f6f3ed;min-width:320px;min-height:100vh}button,input,select,textarea{font:inherit}button{color:inherit}ul{margin:0;padding:0;list-style:none}.app-shell{grid-template-columns:330px 1fr;min-height:100vh;display:grid}.sidebar{background:#efe9de;border-right:1px solid #ded5c6;height:100vh;padding:26px 20px 60px;position:sticky;top:0;overflow:auto}.brand{align-items:center;gap:12px;margin-bottom:20px;display:flex}.brand-mark{color:#fff;letter-spacing:-.03em;background:#1f5144;border-radius:13px;flex:none;place-items:center;width:46px;height:46px;font-weight:800;display:grid}.brand h1{margin:0;font-size:17px}.brand p{color:#736d63;margin:3px 0 0;font-size:12px}.eyebrow{color:#8a6b42;letter-spacing:.12em;text-transform:uppercase;font-size:11px;font-weight:800}.book-picker{gap:7px;margin-bottom:4px;display:grid}.book-picker select{color:#2c2924;cursor:pointer;background:#fffdfa;border:1px solid #d8cfbf;border-radius:10px;width:100%;padding:10px 12px}.book-edition{color:#766f64;font-size:12px}.search{background:#faf8f4;border:1px solid #d8cfbf;border-radius:10px;outline:none;width:100%;margin:16px 0 12px;padding:11px 13px}.search:focus{border-color:#729185;box-shadow:0 0 0 3px #3d705f1f}.chapter-nav{gap:6px;display:grid}.nav-chapter{border-radius:10px}.nav-chapter summary{cursor:pointer;color:#57513f;border-radius:9px;justify-content:space-between;align-items:center;gap:8px;padding:8px 10px;font-size:13px;font-weight:750;list-style:none;display:flex}.nav-chapter summary::-webkit-details-marker{display:none}.nav-chapter summary:before{content:"▸";color:#a39a8b;flex:none;font-size:11px;transition:transform .15s}.nav-chapter[open]>summary:before{transform:rotate(90deg)}.nav-chapter summary:hover{background:#ffffff80}.chapter-title{flex:1;min-width:0}.section-link{text-align:left;cursor:pointer;background:0 0;border:0;border-radius:9px;justify-content:space-between;align-items:center;gap:10px;width:100%;margin:1px 0;padding:8px 10px 8px 26px;font-size:13px;display:flex}.section-link:hover{background:#ffffff80}.section-link.active{background:#fffdfa;box-shadow:inset 3px 0 #2f6b5a}.section-name{flex:1;min-width:0}.count{color:#5d574f;text-align:center;background:#ded8cd;border-radius:999px;flex:none;min-width:24px;padding:2px 7px;font-size:11px}.nav-chapter .count{background:#e2dccd}.section-link.active .count{color:#285c4d;background:#dcebe5}.topbar,.nav-backdrop{display:none}.main-col{min-width:0}.content{width:100%;max-width:1020px;margin:0 auto;padding:44px 48px 96px}.content-header{justify-content:space-between;align-items:flex-start;gap:24px;margin-bottom:28px;display:flex}.content-header h2{letter-spacing:-.02em;margin:6px 0 8px;font-family:Georgia,Noto Serif SC,Songti SC,serif;font-size:clamp(26px,3.6vw,40px);font-weight:600}.breadcrumb{color:#777066;margin:0;font-size:13px}.source-note{color:#386653;white-space:nowrap;background:#e6eee9;border-radius:999px;flex:none;padding:9px 12px;font-size:12px}.question-list{gap:24px;display:grid}.question-card{content-visibility:auto;contain-intrinsic-size:auto 420px;background:#fffdfa;border:1px solid #e3dcd0;border-radius:18px;padding:24px;box-shadow:0 10px 32px #503f2a0f}.question-meta{justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:16px;display:flex}.q-tags{flex-wrap:wrap;gap:6px;display:flex}.q-tag{color:#6b6355;background:#efe9dd;border-radius:999px;padding:3px 9px;font-size:12px;font-weight:650}.q-tag.type-single-choice{color:#3d6b3f;background:#e2ecdf}.q-tag.type-multiple-choice{color:#3a5a80;background:#e0e9f2}.q-tag.type-short-answer{color:#8a5a24;background:#f3e8d8}.q-tag.type-comprehensive{color:#7d3a52;background:#efe0e6}.q-tag.q-id{color:#9a917f;background:0 0;border:1px dashed #cfc6b6;font-weight:500}.q-pos{color:#a29a8d;flex:none;font-size:12px}.md-p{white-space:pre-wrap;line-height:1.75}.stem{font-size:15px}.md-table-scroll{margin:10px 0;overflow-x:auto}.md-table{border-collapse:collapse;min-width:50%;font-size:13.5px}.md-table th,.md-table td{text-align:left;border:1px solid #d9d0c2;padding:6px 12px}.md-table th{background:#f3eee4;font-weight:700}.options{gap:8px;margin-top:18px;display:grid}.options-raw{background:#faf7f2;border:1px dashed #d9d1c3;border-radius:10px;margin-top:18px;padding:12px 14px;font-size:14.5px}.stem-extra{margin-top:10px}.error-detail{color:#a29a8d;word-break:break-all;font-size:12.5px}.option{cursor:pointer;text-align:left;background:#faf7f2;border:1px solid #d9d1c3;border-radius:12px;align-items:flex-start;gap:12px;width:100%;padding:10px 12px;line-height:1.6;transition:border-color .12s,background .12s;display:flex}.option:hover:not(:disabled){border-color:#6c9183}.option:disabled{cursor:default}.opt-letter{color:#4c463c;background:#e9e2d5;border-radius:8px;flex:none;place-items:center;width:26px;height:26px;font-size:13px;font-weight:800;display:grid}.option.selected{background:#eef4f1;border-color:#2f6b5a}.option.selected .opt-letter{color:#fff;background:#2f6b5a}.option.correct{background:#e9f3ec;border-color:#3d8a5f}.option.correct .opt-letter{color:#fff;background:#3d8a5f}.option.wrong{background:#f9eeec;border-color:#c05b4d}.option.wrong .opt-letter{color:#fff;background:#c05b4d}.opt-text{white-space:pre-wrap;flex:1;min-width:0}.draft-answer{resize:vertical;color:#292721;background:#faf8f4;border:1px solid #d7cfc3;border-radius:10px;outline:none;width:100%;min-height:130px;margin-top:18px;padding:14px;line-height:1.65}.draft-answer:focus{border-color:#6c9183;box-shadow:0 0 0 3px #3d705f1a}.card-actions{flex-wrap:wrap;align-items:center;gap:14px;margin-top:16px;display:flex}.primary-btn{color:#fff;cursor:pointer;background:#292721;border:0;border-radius:10px;padding:11px 18px;font-weight:700}.primary-btn:hover:not(:disabled){background:#3c3932}.primary-btn:disabled{opacity:.45;cursor:default}.ghost-btn{cursor:pointer;color:#5d564b;background:0 0;border:1px solid #cfc6b6;border-radius:10px;padding:9px 14px;font-size:13px}.ghost-btn:hover{background:#f3eee4}.verdict{color:#8a5a24;font-size:14px;font-weight:700}.verdict.ok{color:#2f6b4a}.answer-panel{border-top:1px dashed #d6cec2;margin-top:20px;padding-top:18px}.answer-block{margin-bottom:20px}.answer-block h3{color:#855f35;letter-spacing:.08em;margin:0 0 10px;font-size:12px;font-weight:800}.answer-block .md{font-size:14px}.answer-missing{color:#6d6254;background:#f4efe6;border-radius:10px;margin:0;padding:14px 16px;font-size:13px;line-height:1.6}.provenance{color:#9a917f;word-break:break-all;margin-bottom:18px;font-size:12px;line-height:1.6}.match-list{gap:14px;display:grid}.match{background:#fbf8f1;border:1px solid #e4dccc;border-radius:12px;padding:14px 16px}.match.current{background:#f2f7f4;border-color:#9dbfb2}.match-head{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.relation-badge{border-radius:999px;padding:2px 9px;font-size:11px;font-weight:800}.relation-badge.direct{color:#285c4d;background:#dcebe5}.relation-badge.supporting{color:#7a6440;background:#ece4d4}.match-path{color:#6f695e;font-size:12.5px;font-weight:650}.current-badge{color:#fff;background:#2f6b5a;border-radius:999px;padding:2px 8px;font-size:11px;font-weight:700}.match-title{color:#35322b;margin-top:5px;font-size:14px;font-weight:700}.match-pages{color:#93897a;margin-top:3px;font-size:12px}.match-kp,.match-reason{margin:9px 0 0;font-size:13.5px;line-height:1.7}.match-reason{color:#6f695e}.match-label{color:#7a6a4d;background:#eee7d8;border-radius:6px;margin-right:8px;padding:1px 7px;font-size:11px;font-weight:800;display:inline-block}.match-actions{gap:14px;margin-top:10px;display:flex}.link-btn{cursor:pointer;color:#2f6b5a;text-underline-offset:3px;background:0 0;border:0;padding:0;font-size:13px;font-weight:700;text-decoration:underline}.section-text{color:#45413a;background:#fff;border:1px solid #e0d8c9;border-radius:10px;max-height:480px;margin-top:12px;padding:14px 16px;font-size:13px;overflow:auto}.section-text .md-p{line-height:1.8}.state-inline{color:#8a8172;padding:12px;font-size:13px}.empty{color:#777066;text-align:center;border:1px dashed #d3cabe;border-radius:18px;place-items:center;gap:8px;min-height:220px;padding:40px;display:grid}.empty strong{color:#3b3832}@media (width<=900px){.app-shell{display:block}.sidebar{z-index:50;width:min(330px,88vw);height:100dvh;transition:transform .2s;position:fixed;inset:0 auto 0 0;transform:translate(-102%);box-shadow:0 0 48px #28201440}.sidebar.open{transform:none}.nav-backdrop.show{z-index:40;background:#2b251c66;display:block;position:fixed;inset:0}.topbar{z-index:30;background:#f6f3ed;border-bottom:1px solid #e0d8ca;align-items:center;gap:12px;padding:10px 14px;display:flex;position:sticky;top:0}.menu-btn{cursor:pointer;background:#fffdfa;border:1px solid #d5ccbd;border-radius:10px;flex:none;width:38px;height:38px;font-size:16px}.topbar-title{text-overflow:ellipsis;white-space:nowrap;font-size:14px;font-weight:700;overflow:hidden}.content{padding:22px 14px 72px}.content-header{flex-direction:column;gap:12px;margin-bottom:20px}.source-note{white-space:normal}.question-card{border-radius:14px;padding:16px 14px}.question-meta{flex-direction:column;gap:8px}}