:root { color-scheme: light dark; --fg: #1d1d1f; --muted: #6e6e73; --bg: #ffffff; --line: #e5e5ea; --accent: #0a84ff; }
@media (prefers-color-scheme: dark) { :root { --fg: #f5f5f7; --muted: #a1a1a6; --bg: #000; --line: #2c2c2e; } }
* { box-sizing: border-box; }
body { margin: 0; padding: 32px 20px 64px; font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif; color: var(--fg); background: var(--bg); }
main { max-width: 680px; margin: 0 auto; }
nav { display: flex; gap: 20px; margin-bottom: 40px; font-size: 15px; }
nav a { color: var(--muted); text-decoration: none; }
nav a[aria-current] { color: var(--fg); font-weight: 600; }
h1 { font-size: 34px; letter-spacing: -0.02em; margin: 0 0 8px; }
h2 { font-size: 21px; margin: 36px 0 8px; }
p, li { color: var(--fg); }
.lede { color: var(--muted); font-size: 19px; margin-top: 0; }
a { color: var(--accent); }
hr { border: 0; border-top: 1px solid var(--line); margin: 40px 0; }
footer { color: var(--muted); font-size: 14px; }
.icon { width: 96px; height: 96px; border-radius: 22px; display: block; margin-bottom: 20px; }