:root{color-scheme:dark;--bg:#0d1117;--fg:#c9d1d9;--muted:#8b949e;--link:#58a6ff;--border:#30363d;--card:#161b22;}
body{margin:0;font:18px/1.55 system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--fg)}
a{color:var(--link);text-decoration:none} a:hover{text-decoration:underline}
.container{max-width:1100px;margin:0 auto;padding:24px}
.nav{display:flex;gap:14px;padding:14px 24px;border-bottom:1px solid var(--border);background:rgba(13,17,23,.95);position:sticky;top:0}
.nav a{padding:6px 12px;border:1px solid var(--border);border-radius:6px;background:var(--card)}
ul{list-style:none;padding:0} li{padding:4px 0}