:root{color-scheme:light;--paper:#fff;--ink:#263d4a;--muted:#6c7e87;--blue:#256678;--equipment:#c18a45;--line:#d7e2e6;--wash:#f1f5f6}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:14px/1.65 "Microsoft YaHei","Noto Sans CJK SC",sans-serif}main{max-width:1280px;margin:auto;padding:18px}header{margin-bottom:22px}h1{font:650 25px/1.4 "Noto Serif CJK SC","Microsoft YaHei",serif;margin:0}header p{color:var(--muted);margin:5px 0 0}.method-group{margin:0 0 22px}.group-head{display:flex;align-items:center;gap:12px;margin:0 0 9px}.group-head h2{font-size:16px;font-weight:650;margin:0}.group-head span{font-size:12px;color:var(--muted)}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.method{position:relative;border:1px solid var(--line);border-radius:4px;background:var(--paper);padding:0;text-align:left;color:var(--ink);font:inherit;cursor:pointer;overflow:hidden}.method[aria-pressed=true]{border:2px solid var(--blue)}.method:hover{border-color:var(--blue)}.method:focus-visible,button:focus-visible,a:focus-visible{outline:3px solid var(--equipment);outline-offset:3px}.method img{display:block;width:100%;height:auto;aspect-ratio:1170/398;object-fit:contain;background:var(--wash)}.card-text{padding:10px 12px}.card-text strong{display:block;font-size:15px;line-height:1.45}.card-text p{font-size:12px;line-height:1.6;color:var(--muted);margin:5px 0 8px;min-height:2.5em}.card-bottom{display:flex;justify-content:space-between;gap:8px;font-size:11px;color:var(--blue)}.tag{color:var(--muted)}.method[aria-pressed=true] .open::after{content:' · 已选'}.cards.single{grid-template-columns:1fr}.cards.single .method{display:grid;grid-template-columns:1fr 1fr;align-items:center}.cards.single img{aspect-ratio:1170/398}.cards.single .card-text{padding:16px 20px}.cards.single .card-text strong{font-size:18px}.classification{font-size:12px;color:var(--muted);margin:0 0 22px;padding:10px 12px;background:var(--wash);border-left:3px solid #a6c2cc}#viewer{border-top:2px solid var(--blue);padding-top:16px;scroll-margin-top:18px}.viewer-head{display:flex;align-items:center;justify-content:space-between;gap:15px}.viewer-head h2{margin:0;font-size:19px}.viewer-head div{display:flex;gap:16px;align-items:center}.viewer-head a{font-size:12px}button#back-to-catalog{font:inherit;font-size:12px;background:white;color:var(--blue);border:1px solid var(--line);border-radius:3px;padding:5px 10px;cursor:pointer}#description{margin:12px 0;font-size:14px;line-height:1.8}#physical{display:grid;grid-template-columns:1fr 1fr 1.2fr;gap:16px;margin:0 0 14px;padding:12px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}#physical div{min-width:0}dt{font-size:11px;color:var(--muted)}dd{margin:3px 0 0;font-size:13px;color:var(--ink)}iframe{width:100%;height:650px;display:block;border:1px solid var(--line);border-radius:4px;background:var(--wash)}#scope{font-size:12px;color:var(--muted);line-height:1.75;margin:8px 0}footer{display:flex;align-items:start;justify-content:space-between;gap:18px;margin-top:18px;padding-top:14px;border-top:1px solid var(--line);font-size:11px;color:var(--muted)}a{color:var(--blue);text-decoration:none}a:hover{text-decoration:underline}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}