.panel{border:1px solid var(--line);background:var(--surface);padding:26px;border-radius:10px;margin:22px 0;min-width:0}.panel h2,.panel h3{margin-bottom:15px}.panel p{overflow-wrap:anywhere}.small{font-size:12px}.notice{font-size:13px;color:var(--muted);margin:12px 0;overflow-wrap:anywhere}.notice[data-error=true]{color:var(--accent)}.module-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:30px 0 16px}.module-heading .actions{margin:0}.module-intro{margin-bottom:25px}.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:20px}.news-card{border:1px solid var(--line);border-radius:8px;padding:24px;min-width:0;background:var(--surface);display:flex;flex-direction:column}.news-card h2,.news-card h3{font-size:21px;line-height:1.5;overflow-wrap:anywhere;margin:11px 0}.news-card h3 a:hover{color:var(--green)}.news-card p{font-size:13px;color:var(--muted);margin:10px 0;overflow-wrap:anywhere}.news-card .news-source{margin-top:auto;padding-top:15px;font-size:12px;color:var(--green);overflow-wrap:anywhere}.news-cover{background:linear-gradient(125deg,var(--wash),var(--bg));border:1px solid var(--line);border-radius:6px;font:36px Georgia,serif;letter-spacing:-.05em;color:var(--green);padding:28px;min-height:118px;display:flex;align-items:end;justify-content:space-between}.news-cover small{font:10px 'Segoe UI',sans-serif;letter-spacing:.09em}.news-detail-copy{max-width:820px}.news-detail-copy h1{font-size:35px}.news-detail-copy h2{font-size:23px;margin:28px 0 12px}.news-detail-copy p,.news-detail-copy li{font-size:15px;line-height:1.9;white-space:pre-wrap;overflow-wrap:anywhere}.pagination{display:flex;gap:20px;align-items:center;justify-content:center;margin:30px 0}.pagination span{font-size:13px;color:var(--muted)}.button:disabled{cursor:not-allowed;opacity:.5}.battle-hero{display:grid;grid-template-columns:1.1fr 1fr;gap:32px;background:var(--wash);border:1px solid var(--line);padding:38px;border-radius:13px;margin-bottom:28px}.battle-hero h2{font-size:25px}.battle-hero p{font-size:13px;color:var(--muted);margin:15px 0}.countdown{font-size:clamp(36px,6vw,64px);font-weight:600;color:var(--green);font-variant-numeric:tabular-nums;line-height:1.5;margin-top:18px}.quote-box{border-left:1px solid var(--line);padding-left:30px}.quote-modes{display:flex;gap:7px;flex-wrap:wrap}.quote-modes .button{padding:7px 12px;font-size:12px}.quote-modes button[aria-pressed=true],button[data-trend][aria-pressed=true]{background:var(--green);color:var(--surface)}blockquote{font:24px/1.7 Georgia,'Songti SC','SimSun',serif;margin:23px 0;color:var(--green);min-height:124px}.timeline{padding-left:22px}.timeline li{padding:10px 0;font-size:14px;overflow-wrap:anywhere}.timeline li strong{display:block}.timeline a{color:var(--green);text-decoration:underline}.study-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:23px}.study-grid .panel{margin:0}.panel form{display:grid;gap:14px;margin-top:18px}.panel label,.transfer label,#mistake-form label{display:grid;gap:7px;font-size:13px}.panel input:not([type=checkbox]),.panel textarea,#mistake-form input:not([type=checkbox]),#mistake-form textarea,#mistake-form select{width:100%;background:var(--bg);border:1px solid var(--line);border-radius:6px;padding:10px 12px;min-height:44px}.panel textarea,#mistake-form textarea{font:14px/1.8 Consolas,'Microsoft YaHei',monospace;resize:vertical}.panel .inline-form{display:flex;align-items:end;flex-wrap:wrap;gap:15px}.inline-form label{flex:1;min-width:160px}.inline-form .check-label{display:flex;gap:8px;align-items:center;min-height:44px}.goal-list{padding:0;list-style:none;margin:0}.goal-list li{padding:15px 0;border-bottom:1px solid var(--line)}.goal-list strong{font-size:16px;display:block;overflow-wrap:anywhere}.goal-list small{color:var(--muted);font-size:12px}.goal-list .actions{gap:7px;margin:8px 0 0}.goal-list .button{font-size:11px;padding:5px 9px}.metric-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:15px;margin:16px 0}.metric{border:1px solid var(--line);background:var(--wash);padding:17px;border-radius:8px;min-width:0}.metric strong{font-size:27px;display:block;font-variant-numeric:tabular-nums;overflow-wrap:anywhere}.metric span{color:var(--muted);font-size:12px}.bar-chart{display:flex;gap:5px;align-items:end;height:175px;border-bottom:1px solid var(--line);padding-top:20px;margin:20px 0 45px}.bar-slot{flex:1;min-width:0;height:100%;display:flex;flex-direction:column;justify-content:end;align-items:center;position:relative}.bar-slot i{display:block;width:min(75%,30px);min-height:3px;background:var(--green);border-radius:4px 4px 0 0}.bar-slot span{font-size:9px;color:var(--muted);position:absolute;top:100%;padding-top:7px;white-space:nowrap}.heatmap{display:grid;grid-template-columns:repeat(15,minmax(0,1fr));gap:7px;margin:24px 0}.heat-cell{aspect-ratio:1;max-height:35px;min-height:10px;border:1px solid var(--line);border-radius:4px;background:var(--bg)}.heat-cell[data-level='1']{background:var(--wash)}.heat-cell[data-level='2']{background:var(--green);opacity:.45}.heat-cell[data-level='3']{background:var(--green);opacity:.72}.heat-cell[data-level='4']{background:var(--green)}.transfer summary{cursor:pointer;min-height:44px;display:flex;align-items:center;font-weight:600}.transfer>p{font-size:13px;color:var(--muted);margin:15px 0}.transfer label{margin:15px 0}.mistake-list{display:grid;gap:22px;margin:20px 0}.mistake-card{padding:25px;border:1px solid var(--line);background:var(--surface);border-radius:10px;min-width:0}.mistake-card h3{font-size:20px;overflow-wrap:anywhere}.math-copy{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.95;font-size:15px;margin:14px 0;max-width:100%;overflow-x:auto}.katex-display{overflow:auto hidden;max-width:100%;padding:8px 0}.mistake-meta{display:flex;flex-wrap:wrap;gap:8px;font-size:11px;color:var(--muted)}.mistake-meta span{padding:2px 8px;border:1px solid var(--line);border-radius:4px}.mistake-card details{margin:17px 0}.mistake-card details summary{cursor:pointer;font-size:13px;color:var(--green);min-height:44px;display:flex;align-items:center}.mistake-card h4{font-size:13px;margin:15px 0 0;color:var(--muted)}.attachments{display:flex;flex-wrap:wrap;gap:14px;margin:15px 0}.attachments img{max-width:100%;max-height:250px;object-fit:contain;border:1px solid var(--line);border-radius:7px}.attachment-wrap{max-width:250px;min-width:0}.form-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}#mistake-dialog{width:min(820px,calc(100% - 24px))}#mistake-form{display:grid;gap:17px}#review-dialog{width:min(760px,calc(100% - 24px))}.privacy-gate{background:var(--wash)}.weakness-row{display:flex;flex-wrap:wrap;gap:12px;font-size:12px;margin:13px 0}.weakness-row span{border:1px solid var(--line);border-radius:5px;padding:6px 10px}.home-news{margin-top:35px}.study-feedback{font-size:13px;color:var(--muted)}
@media(min-width:801px) and (max-width:1240px){.site-header{flex-wrap:wrap;padding:17px 0;gap:10px}.site-header nav{order:3;width:100%;justify-content:center;gap:23px}.site-header .header-actions{margin-left:auto}}
@media(max-width:900px){.news-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.battle-hero{padding:27px;gap:22px}.metric-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:650px){.panel{padding:20px;margin:19px 0}.news-grid,.study-grid,.battle-hero{grid-template-columns:1fr}.news-card{padding:21px}.battle-hero{padding:25px 21px}.quote-box{border-left:0;border-top:1px solid var(--line);padding:23px 0 0}.quote-box blockquote{min-height:0;font-size:22px}.module-heading{align-items:start;flex-direction:column}.metric-grid{gap:10px}.metric{padding:14px}.metric strong{font-size:23px}.heatmap{grid-template-columns:repeat(10,minmax(0,1fr));gap:6px}.form-row{grid-template-columns:1fr}.mistake-card{padding:20px}.news-detail-copy h1{font-size:27px}.pagination{gap:13px}.bar-chart{height:145px}.bar-slot span{font-size:8px}.study-grid .panel{margin:0}.study-grid{gap:19px}.actions .button{font-size:12px;padding:8px 12px}}
@media(prefers-reduced-motion:reduce){.countdown,.bar-slot i{transition:none}}