:root{color-scheme:light dark;--fg:#1c1c1e;--muted:#6e6e73;--bg:#fff;--line:#d1d1d6;--link:#06c}
@media(prefers-color-scheme:dark){:root{--fg:#f2f2f7;--muted:#98989d;--bg:#000;--line:#38383a;--link:#4da3ff}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif}
main{max-width:720px;margin:0 auto;padding:32px 16px 64px}h1{font-size:34px;line-height:1.2;margin:8px 0 4px}h2{font-size:22px;margin:36px 0 8px}
p,li{margin:8px 0}.muted{color:var(--muted);font-size:15px}a{color:var(--link)}nav{font-size:15px;margin-bottom:24px}nav a{margin-right:16px}
footer{border-top:1px solid var(--line);margin-top:48px;padding-top:16px;font-size:15px;color:var(--muted)}