
:root{--ink:#1c2430;--muted:#5e6a78;--line:#d7dfeb;--paper:#f5f7fb;--panel:#ffffff;--accent:#1565c0;--accent-2:#ff8f00;--shadow:0 16px 42px rgba(21,58,104,.08)}*{box-sizing:border-box}body{margin:0;font-family:"PingFang SC","Noto Sans CJK SC",system-ui,sans-serif;background:linear-gradient(180deg,#f8fbff 0,#f2f6fb 100%);color:var(--ink);line-height:1.7}a{text-decoration:none;color:inherit}.topbar{position:sticky;top:0;z-index:10;display:flex;justify-content:space-between;align-items:center;padding:14px 26px;background:rgba(248,251,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(21,101,192,.12)}.brand{font-weight:800;color:var(--ink)}nav a{margin-left:16px;color:var(--muted)}nav a:hover,.brand:hover{color:var(--accent)}main,section{padding-inline:clamp(20px,4vw,72px)}.hero{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(280px,.92fr);gap:34px;align-items:center;min-height:80vh;padding-top:42px;padding-bottom:44px}.hero h1{margin:0 0 14px;font-size:clamp(34px,5vw,58px);line-height:1.08;letter-spacing:0}.hero p{font-size:18px;color:#465363}.hero figure{margin:0;padding:18px;border:1px solid rgba(21,101,192,.12);border-radius:8px;background:rgba(255,255,255,.85);box-shadow:var(--shadow)}.hero img{width:100%;max-height:560px;object-fit:contain;background:#fff;border:1px solid var(--line)}.hero figcaption{margin-top:10px;color:var(--muted);font-size:14px}.eyebrow{margin:0 0 10px;color:var(--accent-2);font-weight:800}.cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}.cta a{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:10px 16px;border-radius:6px;border:1px solid var(--accent)}.cta a:first-child{background:var(--accent);color:#fff}.cta a:last-child{color:var(--accent);background:transparent}.band,.grid-section{padding-top:22px;padding-bottom:16px}.band h2,.grid-section h2{margin:0 0 12px;font-size:26px;line-height:1.2;letter-spacing:0}.route{display:flex;flex-wrap:wrap;gap:10px}.route span,.tag{display:inline-flex;align-items:center;padding:8px 12px;border:1px solid rgba(21,101,192,.14);border-radius:999px;background:#fff;color:#26435e;margin:4px 6px 0 0}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}.card{display:block;padding:18px;border:1px solid rgba(21,101,192,.14);border-radius:8px;background:rgba(255,255,255,.9);box-shadow:var(--shadow);min-height:170px}.card:hover{transform:translateY(-2px);border-color:rgba(21,101,192,.28)}.card span{display:block;color:var(--accent-2);font-size:13px;font-weight:800}.card h3{margin:10px 0 8px;font-size:22px;line-height:1.25;letter-spacing:0}.card p{margin:0;color:var(--muted)}.layout{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:24px;padding-top:30px;padding-bottom:40px}.content{padding:26px;border:1px solid rgba(21,101,192,.14);border-radius:8px;background:rgba(255,255,255,.88);box-shadow:var(--shadow)}.content.narrow{max-width:980px;margin:32px auto}.content h1{margin:0 0 14px;font-size:38px;line-height:1.15;letter-spacing:0}.content h2{margin-top:28px;margin-bottom:10px;font-size:24px;line-height:1.2;letter-spacing:0}.callout{padding:16px 18px;border-left:4px solid var(--accent);border-radius:6px;background:linear-gradient(135deg,rgba(21,101,192,.08),rgba(255,143,0,.08))}.deep-card{padding:16px;border:1px solid rgba(21,101,192,.14);border-radius:8px;background:#fff;margin:14px 0}.deep-card h3{margin-top:0;margin-bottom:8px;font-size:19px}.source{font-size:14px;color:var(--muted)}.section-note{margin:0 0 10px;color:var(--muted)}.side{position:sticky;top:74px;align-self:start;padding:16px;border:1px solid rgba(21,101,192,.14);border-radius:8px;background:rgba(255,255,255,.94);box-shadow:var(--shadow);max-height:calc(100vh - 92px);overflow:auto}.viewer{padding:10px;border:1px solid var(--line);border-radius:8px;background:#fff}.viewer img{width:100%;aspect-ratio:4/3;object-fit:contain;background:#fafcff;border:1px solid var(--line)}.viewer p{margin:8px 0 0}.viewer b{display:block}.viewer span{display:block;color:var(--muted);font-size:13px}.plate-group{margin-top:14px}.plate-group h3{margin:0 0 8px;font-size:14px;color:var(--accent-2)}.plate-group-list{display:grid;grid-template-columns:1fr;gap:8px}.plate-pick{display:grid;grid-template-columns:72px 1fr;gap:10px;align-items:center;padding:8px;border:1px solid rgba(21,101,192,.12);border-radius:8px;background:#fff;color:var(--ink);cursor:pointer;text-align:left}.plate-pick img{width:100%;aspect-ratio:4/3;object-fit:contain;background:#f7faff;border:1px solid var(--line)}.plate-pick span{font-size:13px;line-height:1.35}.plate-pick:hover{border-color:rgba(21,101,192,.3)}.visual-strip{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}.visual-card{display:block;padding:8px;border:1px solid rgba(21,101,192,.14);border-radius:8px;background:#fff;color:var(--ink)}.visual-card img{width:100%;aspect-ratio:4/3;object-fit:contain;background:#f7faff;border:1px solid var(--line)}.visual-card span{display:block;margin-top:8px;font-size:13px;font-weight:700;line-height:1.35}.visual-card small{display:block;margin-top:4px;color:var(--muted)}.image-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}.image-card img{width:100%;aspect-ratio:4/3;object-fit:contain;background:#f7faff;border:1px solid var(--line);border-radius:6px}.plate-large img{width:100%;max-height:76vh;object-fit:contain;background:#fff;border:1px solid var(--line);border-radius:8px}.learn-nav{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;margin-top:28px}.learn-nav a{display:inline-flex;align-items:center;min-height:40px;padding:9px 12px;border:1px solid rgba(21,101,192,.16);border-radius:6px;background:#fff}.learn-nav a:hover{border-color:rgba(21,101,192,.32)}details{margin:24px 0;padding:16px;border:1px solid rgba(21,101,192,.14);border-radius:8px;background:#fff}summary{cursor:pointer;font-weight:800}table{width:100%;border-collapse:collapse;background:#fff;border:1px solid rgba(21,101,192,.14);border-radius:8px;overflow:hidden}th,td{padding:12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}input.search{width:100%;min-height:42px;padding:10px 12px;border:1px solid rgba(21,101,192,.18);border-radius:6px;background:#fff}@media(max-width:920px){.hero,.layout{grid-template-columns:1fr}.side{position:static;max-height:none}.topbar{padding:12px 16px}nav a{margin-left:10px}.content{padding:18px}.learn-nav{display:block}.learn-nav a{display:block;margin-bottom:10px}}
