:root { --bg: #fbfaf7; --fg: #1d1d1b; --muted: #6b6a66; --link: #1f5fbf; }
@media (prefers-color-scheme: dark) { :root { --bg: #151514; --fg: #ecebe7; --muted: #9a9993; --link: #7fb0ff; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 48px 16px 24px; }
h1 { font-size: 2rem; margin: 0 0 8px; }
h2 { font-size: 1.15rem; margin: 28px 0 6px; }
.lead { font-size: 1.15rem; color: var(--muted); }
.muted { color: var(--muted); }
a { color: var(--link); }
footer { max-width: 720px; margin: 0 auto; padding: 24px 16px 48px; color: var(--muted); font-size: 0.9rem; }