:root { color-scheme: light dark; --text: #1d1d1f; --muted: #6e6e73; --bg: #ffffff; --accent: #4f4fe0; }
@media (prefers-color-scheme: dark) { :root { --text: #f5f5f7; --muted: #a1a1a6; --bg: #1c1c1e; --accent: #9a9aff; } }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.55 -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif; }
main { max-width: 680px; margin: 0 auto; padding: 56px 20px 80px; }
h1 { font-size: 34px; line-height: 1.15; margin: 0 0 8px; }
h2 { font-size: 21px; margin: 36px 0 6px; }
p, li { color: var(--text); }
.lede, .meta { color: var(--muted); }
a { color: var(--accent); }
nav { margin-bottom: 40px; font-weight: 600; }
nav a { margin-right: 18px; text-decoration: none; }