:root { --bg: #0f172a; --text: #e2e8f0; --muted: #94a3b8; --link: #60a5fa; color-scheme: dark; }
@media (prefers-color-scheme: light) { :root { --bg: #fff; --text: #1e293b; --muted: #64748b; --link: #1d4ed8; color-scheme: light; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; padding: 24px 16px 48px; }
main { max-width: 640px; margin: 0 auto; }
h1 { font-size: 26px; margin: 16px 0 4px; }
h2 { font-size: 18px; margin: 28px 0 8px; }
ul { padding-left: 20px; }
li { margin-bottom: 6px; }
a { color: var(--link); }
.small { color: var(--muted); font-size: 14px; }