:root{--surface:#f7f7f5;--card:#fff;--ink:#16171a;--muted:#5a5d65;--line:#dcdcd7;--amber:#9a5200}
@media (prefers-color-scheme:dark){:root{--surface:#121315;--card:#1b1c1f;--ink:#ededef;--muted:#a4a7ae;--line:#2e3035;--amber:#ffc25e}}
*{box-sizing:border-box}
body{margin:0;background:var(--surface);color:var(--ink);font:16px/1.6 "Geist","Helvetica Neue",Arial,sans-serif}
main{max-width:720px;margin:0 auto;padding:48px 20px 64px}
h1{font-size:32px;line-height:1.2;letter-spacing:-.02em;margin:0 0 8px}
h2{font-size:20px;margin:32px 0 8px}
p,li{color:var(--ink)}
.muted{color:var(--muted);font-size:14px}
a{color:var(--amber)}
nav{display:flex;gap:16px;font-size:14px;margin-bottom:32px}
hr{border:0;border-top:1px solid var(--line);margin:48px 0}