:root { color-scheme: light dark; --bg: #f7f7f8; --fg: #1d1d1f; --muted: #6e6e73; --accent: #2563eb; }
@media (prefers-color-scheme: dark) { :root { --bg: #111113; --fg: #f2f2f4; --muted: #a1a1a6; --accent: #60a5fa; } }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--fg);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
main { max-width: 32rem; margin: 0 auto; padding: 20vh 16px 0; }
h1 { font-size: 1.75rem; margin: 0 0 .5rem; }
p { color: var(--muted); margin: .25rem 0; }
a { color: var(--accent); }