:root { color-scheme: light dark; --text: #1d1d1f; --muted: #6e6e73; --bg: #fbfbfd; --accent: #2f7d4f; }
@media (prefers-color-scheme: dark) { :root { --text: #f5f5f7; --muted: #a1a1a6; --bg: #121214; --accent: #6cc58f; } }
body { font: 17px/1.55 -apple-system, BlinkMacSystemFont, system-ui, sans-serif; color: var(--text); background: var(--bg);
       max-width: 38rem; margin: 3rem auto; padding: 0 16px; }
h1 { font-size: 2rem; margin-bottom: .25rem; }
h2 { font-size: 1.15rem; margin-top: 2rem; }
p.lede, .muted { color: var(--muted); }
a { color: var(--accent); }
footer { margin-top: 3rem; font-size: .9rem; color: var(--muted); }