:root { --text: #1f1f1f; --muted: #666; --bg: #fff; --link: #2b5fd9; }
@media (prefers-color-scheme: dark) { :root { --text: #e8e8e8; --muted: #9a9a9a; --bg: #141414; --link: #8fb0ff; } }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
main { max-width: 36rem; margin: 0 auto; padding: 4rem 16px; }
h1 { font-size: 1.6rem; margin: 0 0 1.5rem; }
h2 { font-size: 1.05rem; margin: 2rem 0 0.5rem; }
p, li { color: var(--text); }
.muted { color: var(--muted); font-size: 0.9rem; }
a { color: var(--link); }