:root { --bg: #ffffff; --fg: #1c1c1e; --muted: #6e6e73; --card: #f2f2f7; --brand: #F26B1D; }
@media (prefers-color-scheme: dark) { :root { --bg: #000; --fg: #f5f5f7; --muted: #a1a1a6; --card: #1c1c1e; --brand: #FF8A3D; } }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--fg); font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, sans-serif; }
main { max-width: 720px; margin: 0 auto; padding: 48px 16px 64px; }
h1 { font-size: 34px; line-height: 1.15; margin: 0 0 12px; }
h2 { font-size: 22px; margin: 32px 0 8px; }
p, li { color: var(--fg); }
.muted { color: var(--muted); }
a { color: var(--brand); }
.card { background: var(--card); border-radius: 16px; padding: 16px 20px; margin: 16px 0; }
nav { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 40px; font-size: 15px; }