:root{--brand:#059669;--line:#e5e7eb;--muted:#6b7280}*{box-sizing:border-box}body{margin:0;font:15px/1.75 -apple-system,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;color:#111827}.topbar,body{background:#fff}.topbar{display:flex;justify-content:space-between;align-items:center;padding:12px 24px;border-bottom:1px solid var(--line);position:-webkit-sticky;position:sticky;top:0;z-index:10}.brand{font-weight:600;color:var(--brand);text-decoration:none}.topbar nav a{margin-left:16px;color:#374151;text-decoration:none;font-size:14px}.shell{display:flex;max-width:1200px;margin:0 auto}.sidebar{width:250px;padding:20px 16px;border-right:1px solid var(--line);min-height:calc(100vh - 60px)}.sidebar-title{font-size:12px;color:var(--muted);margin-bottom:8px}.sidebar ul{list-style:none;padding:0;margin:0}.sidebar li{margin:6px 0}.sidebar a{color:#374151;text-decoration:none;font-size:14px}.sidebar a:hover{color:var(--brand)}.content{flex:1 1;padding:24px 32px;min-width:0}.content h1{font-size:26px;margin-top:0}.content h2{font-size:20px;margin-top:28px;border-bottom:1px solid var(--line);padding-bottom:6px}.content h3{font-size:16px;margin-top:20px}.content code{background:#f3f4f6;padding:2px 6px;border-radius:4px;font-size:13px}.content pre{background:#0b1a14;color:#e2e8f0;padding:14px;border-radius:8px;overflow:auto}.content pre code{background:none;color:inherit;padding:0}.content table{border-collapse:collapse;width:100%;margin:14px 0}.content td,.content th{border:1px solid var(--line);padding:8px 10px;font-size:14px;text-align:left}.content th{background:#fafafa}.content blockquote{margin:12px 0;padding:8px 14px;border-left:3px solid var(--brand);background:#f8fafc;color:#374151}.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));grid-gap:14px;gap:14px;margin-top:18px}.card{border:1px solid var(--line);border-radius:10px;padding:16px}.card h3{margin:0 0 6px;font-size:15px}.card p{margin:0;color:var(--muted);font-size:13px}.card a{color:var(--brand);text-decoration:none;font-size:13px}