:root { --bg: #fbfaf7; --ink: #1c1917; --muted: #57534e; --link: #1f4a2c; }
@media (prefers-color-scheme: dark) { :root { --bg: #171614; --ink: #f5f5f4; --muted: #a8a29e; --link: #9fd27a; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 18px/1.6 system-ui, -apple-system, sans-serif; }
main, footer { max-width: 40rem; margin: 0 auto; padding: 0 16px; }
main { padding-top: 12vh; padding-bottom: 3rem; }
h1 { font-size: 2.2rem; line-height: 1.1; margin: 0 0 1rem; }
h2 { font-size: 1.15rem; margin: 2rem 0 0.4rem; }
a { color: var(--link); }
footer { padding-bottom: 2rem; color: var(--muted); font-size: 0.9rem; }
code { font-size: 0.9em; }