:root { color-scheme: light dark; --fg: #1d1d1f; --muted: #6e6e73; --bg: #fff; --link: #0066cc; }
@media (prefers-color-scheme: dark) { :root { --fg: #f5f5f7; --muted: #a1a1a6; --bg: #000; --link: #2997ff; } }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.5 -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif; }
main { max-width: 640px; margin: 0 auto; padding: 64px 16px; }
h1 { font-size: 32px; margin: 0 0 8px; }
.muted { color: var(--muted); }
a { color: var(--link); }