:root{--bg:#fafaf9;--fg:#1c1917;--muted:#57534e;--link:#1d4ed8}
@media (prefers-color-scheme:dark){:root{--bg:#1c1917;--fg:#f5f5f4;--muted:#a8a29e;--link:#93c5fd}}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,sans-serif}
main{max-width:640px;margin:0 auto;padding:48px 16px}
h1{font-size:1.6rem;margin:0 0 8px}p,li{color:var(--muted)}a{color:var(--link)}