:root { --bg: #fafafa; --fg: #1c1c1e; --muted: #5f6368; --accent: #2b4c8c; }
@media (prefers-color-scheme: dark) { :root { --bg: #121212; --fg: #e8eaed; --muted: #9aa0a6; --accent: #8ab4f8; } }
* { 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: 680px; margin: 0 auto; padding: 48px 16px 64px; }
h1 { font-size: 2.2rem; margin: 0 0 8px; }
h2 { font-size: 1.2rem; margin-top: 2rem; }
p, li { color: var(--fg); }
.muted { color: var(--muted); }
a { color: var(--accent); }
footer { margin-top: 3rem; font-size: 0.9rem; color: var(--muted); }