:root { color-scheme: light dark; --fg: #1a1a1a; --bg: #fafafa; --accent: #f38020; }
@media (prefers-color-scheme: dark) { :root { --fg: #eee; --bg: #121212; } }
* { box-sizing: border-box; }
body { margin: 0; font: 18px/1.6 system-ui, sans-serif; color: var(--fg); background: var(--bg); }
main { max-width: 40rem; margin: 15vh auto; padding: 0 1rem; }
h1 { margin: 0 0 .5rem; }
a { color: var(--accent); }