:root{--bg:#fbfaf7;--fg:#1d1d1b;--muted:#5f5d57;--line:#e4e1d9;--link:#2f5d50}
@media (prefers-color-scheme:dark){:root{--bg:#161614;--fg:#ecebe6;--muted:#a9a69c;--line:#2e2d29;--link:#8fc4b3}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Helvetica,Arial,sans-serif}
main{max-width:720px;margin:0 auto;padding:48px 16px 64px}h1{font-size:1.9rem;line-height:1.2;margin:0 0 4px}h2{font-size:1.15rem;margin:32px 0 8px}
p,li{color:var(--fg)}.muted{color:var(--muted);font-size:.9rem}a{color:var(--link)}nav{display:flex;gap:16px;margin-bottom:32px;font-size:.95rem}
footer{margin-top:48px;padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-size:.85rem}