:root { color-scheme: light dark; --bg: #fafaf8; --text: #1d1d1b; --muted: #6b6b66; }
@media (prefers-color-scheme: dark) { :root { --bg: #161615; --text: #ececea; --muted: #a3a39e; } }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.6 system-ui, sans-serif; }
main { max-width: 640px; margin: 0 auto; padding: 48px 16px; }
h1 { font-size: 1.6rem; margin: 0 0 8px; }
h2 { font-size: 1.1rem; margin: 28px 0 6px; }
p, li { color: var(--text); }
.muted { color: var(--muted); font-size: 0.9rem; }
a { color: inherit; }