:root{--bg:#fafaf9;--fg:#1c1917;--muted:#57534e;--accent:#b91c1c}
@media (prefers-color-scheme:dark){:root{--bg:#1c1917;--fg:#f5f5f4;--muted:#a8a29e;--accent:#f87171}}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,sans-serif}
main{max-width:720px;margin:0 auto;padding:48px 16px}
h1{font-size:2rem;margin:0 0 8px}h2{font-size:1.2rem;margin-top:32px}
p,li{color:var(--muted)}a{color:var(--accent)}
nav{display:flex;gap:16px;margin-bottom:32px;font-size:.95rem}
footer{margin-top:48px;font-size:.85rem;color:var(--muted)}