:root{--bg:#ffffff;--fg:#1c1c1e;--muted:#6b7280;--line:#e6e6e9;--link:#2a5db0;--soft:#f6f7f9;--maxw:760px}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 system-ui,-apple-system,segoe ui,Roboto,Helvetica,Arial,sans-serif}a{color:var(--link);text-decoration:none}a:hover{text-decoration:underline}.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}header{border-bottom:1px solid var(--line);background:var(--bg)}.bar{display:flex;align-items:center;justify-content:space-between;height:60px}.brand{font-weight:700;font-size:20px;letter-spacing:.2px;color:var(--fg)}.brand:hover{text-decoration:none}nav a{color:var(--muted);margin-left:18px;font-size:15px}nav a:hover{color:var(--fg)}main{padding:40px 0 8px}h1{font-size:30px;line-height:1.25;margin:0 0 14px}h2{font-size:22px;margin:40px 0 14px;padding-bottom:6px;border-bottom:1px solid var(--line)}h3{margin:0 0 6px;font-size:17px}p{margin:0 0 16px}.muted{color:var(--muted)}.cards{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}.card{display:block;border:1px solid var(--line);border-radius:8px;padding:16px;background:var(--bg);color:inherit}.card:hover{text-decoration:none;border-color:#d4d4d8}.card p{font-size:14px;color:var(--muted);margin:0}.list{padding-left:18px}.list li{margin:6px 0}table{width:100%;border-collapse:collapse;font-size:15px;margin:6px 0 4px}th,td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line)}th{background:var(--soft);font-weight:600}footer{border-top:1px solid var(--line);margin-top:48px;color:var(--muted);font-size:14px}footer .wrap{padding-top:20px;padding-bottom:28px}@media(max-width:620px){.cards{grid-template-columns:1fr}.bar{height:auto;padding:12px 0;flex-direction:column;gap:8px}nav a{margin:0 9px}}