:root{--navy:#091733;--blue:#4369ef;--mint:#45dbbb;--text:#172640;--muted:#63718a;--line:#e2e7f0;--bg:#f4f6fb}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.7 system-ui,'Microsoft YaHei',sans-serif}button,a,input{-webkit-tap-highlight-color:transparent}button{font:inherit;cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible{outline:3px solid #7996ff;outline-offset:3px}header{height:76px;display:flex;align-items:center;justify-content:space-between;background:white;border-bottom:1px solid var(--line);padding:0 max(24px,calc((100vw - 1250px)/2))}.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:20px}.mark{background:var(--navy);color:var(--mint);display:grid;place-items:center;width:36px;height:36px;border-radius:10px}.header-note{font-size:14px;color:var(--muted)}main{max-width:1300px;margin:auto;padding:34px 25px 70px}.eyebrow{color:var(--blue);font-size:14px;font-weight:700;letter-spacing:2px}h1{font-size:32px;line-height:1.3;margin:8px 0 14px}h2{font-size:21px;margin:0}h3{font-size:18px;margin:0 0 10px}p{margin:9px 0}.muted{color:var(--muted);font-size:14px}.lead{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:27px}.numbers{display:flex;gap:34px}.numbers strong{display:block;font-size:31px;line-height:1.3;color:var(--navy);font-variant-numeric:tabular-nums}.numbers span{font-size:14px;color:var(--muted)}.tabs{display:flex;gap:8px;border-bottom:1px solid var(--line);margin-bottom:24px}.tab{border:0;background:transparent;padding:13px 23px;color:var(--muted);border-bottom:3px solid transparent;font-weight:700}.tab.active{color:var(--blue);border-color:var(--blue)}.bank-layout{display:grid;grid-template-columns:210px minmax(0,1fr);gap:25px}.sidebar{align-self:start;background:var(--navy);border-radius:18px;padding:20px 13px;color:white}.sidebar h3{font-size:15px;padding:0 10px;color:#b6c5e3}.filter{display:flex;justify-content:space-between;align-items:center;gap:8px;width:100%;border:0;border-radius:9px;color:#b9c6e0;background:transparent;padding:10px;text-align:left;font-size:14px;margin:3px 0}.filter.active{background:#2b426b;color:white}.filter small{font-size:12px;white-space:nowrap}.filter.active small{color:#d7e3ff}.section-title{display:flex;justify-content:space-between;gap:15px;align-items:center;margin:0 0 14px}.cards{display:grid;grid-template-columns:1fr 1fr;gap:16px}.material-card{background:white;border:1px solid var(--line);border-radius:16px;padding:22px;display:flex;flex-direction:column;gap:10px}.material-card.pending{background:#f9fafc}.material-card h3{margin:3px 0;font-size:19px}.card-top{display:flex;justify-content:space-between;font-size:13px;color:var(--muted)}.badge{display:inline-block;border-radius:5px;background:#eef2ff;color:#4865b6;padding:2px 7px;font-size:12px}.badge.wait{background:#edf0f4;color:#69758a}.card-summary{color:var(--muted);font-size:14px;flex:1}.tags{font-size:13px;color:#53657f;min-height:22px}.button{border:0;border-radius:9px;padding:11px 16px;background:var(--navy);color:white;font-weight:650;font-size:14px;display:inline-block;text-align:center}.button:hover{background:#23395c}.button.secondary{background:white;border:1px solid var(--line);color:var(--text)}.button:disabled{background:#d9dfec;color:#67748a;cursor:not-allowed}.material-card .button{align-self:flex-start;margin-top:5px}.notice{background:#eaf0ff;color:#3d5686;border-radius:11px;padding:12px 16px;font-size:14px;margin:16px 0 22px}.notice.pending{background:#fff5df;color:#805d16}.practice-head{display:flex;justify-content:space-between;gap:20px;align-items:center;margin:20px 0}.practice-head h1{font-size:27px;margin-bottom:5px}.timer{background:var(--navy);color:white;border-radius:12px;padding:12px 20px;text-align:center;min-width:128px}.timer strong{display:block;font-size:28px;font-variant-numeric:tabular-nums;line-height:1.4}.timer span{font-size:12px;color:#b9c8e4}.practice-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:22px;align-items:start}.paper{background:white;border:1px solid var(--line);border-radius:16px;padding:25px;min-width:0}.material-paper{position:sticky;top:20px;max-height:calc(100vh - 40px);overflow:auto}.material-body{font-size:16px;line-height:1.95}.material-body p{margin:14px 0}.table-scroll{overflow:auto;margin:18px 0}table{border-collapse:collapse;min-width:100%;font-size:14px;line-height:1.6}td,th{padding:9px 10px;border:1px solid var(--line);text-align:right;white-space:nowrap}td:first-child,th:first-child{text-align:left}th{background:#edf2fb;font-weight:600}.table-label{font-size:13px;color:var(--muted);white-space:pre-wrap}.question{padding:25px 0;border-bottom:1px solid var(--line)}.question:first-child{padding-top:0}.question h2{font-size:17px;font-weight:600;line-height:1.85;margin:10px 0}.qmeta{font-size:13px;color:var(--muted);display:flex;gap:10px;align-items:center}.options{display:grid;grid-template-columns:1fr;gap:9px}.option{display:flex;align-items:baseline;gap:12px;border:1px solid var(--line);border-radius:9px;background:#fff;padding:11px 14px;text-align:left;font-size:15px;color:var(--text)}.option span{font-weight:700;color:#677796}.option.selected{background:#edf2ff;border-color:var(--blue);box-shadow:inset 3px 0 var(--blue)}.option.correct{border-color:#229977;background:#ebfaf4}.option.wrong{border-color:#d77272;background:#fff0f0}.option:disabled{cursor:default;color:var(--text);opacity:1}.answer-line{font-weight:650;font-size:14px;margin:15px 0 0;color:#178263}.answer-line.wrong{color:#b74444}.explanation{margin-top:14px;background:#f5f8fc;border-radius:10px;padding:15px;font-size:14px;line-height:1.85}.explanation h3{font-size:15px;color:#355ba5;margin-top:14px}.explanation h3:first-child{margin-top:0}.explanation ol{padding-left:23px;margin:8px 0}.explanation li{margin:8px 0}.submit-box{padding-top:20px;position:sticky;bottom:0;background:white}.submit-box .button{width:100%}.progress{height:5px;background:#e7ecf5;border-radius:8px;overflow:hidden;margin:10px 0}.progress i{display:block;background:var(--blue);height:100%}.result{background:#e9f8f3;border:1px solid #b7e7d7;padding:20px;border-radius:13px;margin:15px 0;color:#216851}.result strong{font-size:24px}.actions{display:flex;gap:10px;margin-top:15px;flex-wrap:wrap}.empty{background:white;border:1px solid var(--line);border-radius:15px;padding:25px}.target{border:1px solid #c2cffb;background:#f4f6ff;border-radius:11px;padding:16px!important;margin:14px 0}.back{font-size:14px;color:var(--muted)}.coverage{font-size:14px;color:var(--muted);margin:20px 0}.error{padding:30px;background:white;border-radius:15px}@media(max-width:900px){.practice-layout{grid-template-columns:1fr}.material-paper{position:static;max-height:none}.numbers{gap:20px}.cards{grid-template-columns:1fr}.bank-layout{grid-template-columns:185px minmax(0,1fr)}}@media(max-width:600px){header{height:64px;padding:0 18px}.brand{font-size:17px}.header-note{display:none}main{padding:24px 16px 40px}h1{font-size:27px}.lead{display:block}.numbers{margin-top:22px;gap:32px}.numbers strong{font-size:25px}.bank-layout{grid-template-columns:1fr}.sidebar{display:flex;gap:6px;overflow:auto;padding:10px;border-radius:12px}.sidebar h3{display:none}.filter{width:auto;white-space:nowrap;padding:7px 11px;gap:8px;flex-shrink:0}.cards{gap:12px}.paper{padding:18px}.practice-head h1{font-size:22px}.timer{padding:9px 12px;min-width:100px}.timer strong{font-size:23px}.tab{padding:12px 15px}.section-title{align-items:start}.material-card{padding:19px}.practice-head{align-items:start}}
:root .material-tabs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:20px 0}.material-tab{padding:13px 16px;border:1px solid var(--line);border-radius:11px;background:white;color:var(--text);text-align:left}.material-tab.active{border-color:var(--blue);background:#edf2ff}.material-tab b{display:block;font-size:16px}.material-tab span{display:block;font-size:13px;color:var(--muted);margin-top:3px}.set-list{padding-left:22px;margin:4px 0 10px;font-size:14px;line-height:2;color:#53657f}@media(max-width:600px){:root .material-tabs{grid-template-columns:1fr 1fr}.material-tab{padding:10px}.material-tab span{font-size:12px}}
.evidence-mark{background:#ffe59a;color:#553500;border-bottom:2px solid #c78a11;border-radius:3px;padding:2px 0;box-decoration-break:clone;-webkit-box-decoration-break:clone;scroll-margin:90px 20px}.evidence-mark:focus{outline:2px solid #b77800;outline-offset:3px}.evidence-note{padding:10px 12px;border-left:3px solid #dca226;background:#fff7df;color:#76540d;font-size:14px}.locate-button{padding:7px 11px;border:1px solid #dbb65d;background:#fff6dc;color:#735009;border-radius:7px;font-size:14px}.locate-button[aria-pressed=true]{border-color:#a2720c;font-weight:650}
.source-figure{margin:20px 0;padding:12px;border:1px solid var(--line);border-radius:10px;background:white}.source-figure figcaption{font-size:14px;font-weight:600;margin-bottom:10px}.source-figure figcaption small{font-size:12px;font-weight:400;color:var(--muted);display:block}.image-button{display:block;width:100%;padding:0;border:0;background:white;cursor:zoom-in}.image-button img{display:block;width:100%;height:auto}.zoom-link{border:0;background:transparent;color:#3156ac;font-size:14px;text-decoration:underline;text-underline-offset:3px;padding:8px 0;cursor:zoom-in}.option-chart{max-width:calc(100% - 28px);width:auto;height:auto;max-height:280px;object-fit:contain}.option-zooms{display:flex;gap:18px;flex-wrap:wrap}.evidence-figure{border:2px solid #c78a11;background:#fffae9;box-shadow:0 0 0 3px #ffecb780}.image-dialog{width:min(96vw,1500px);max-width:96vw;max-height:94vh;border:0;border-radius:14px;padding:20px;color:var(--text)}.image-dialog::backdrop{background:#07142bbf}.dialog-head{display:flex;justify-content:space-between;gap:15px;align-items:center}.image-scroll{overflow:auto;max-height:75vh}.image-scroll img{display:block;max-width:none}.dialog-head b{font-size:16px}