:root { color-scheme: light dark; --fg: #1d2330; --muted: #6b7385; --bg: #f6f7f9; --accent: #2f6fde; }
@media (prefers-color-scheme: dark) { :root { --fg: #e4e7ee; --muted: #8c94a6; --bg: #14171d; --accent: #7aa7ff; } }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; background: var(--bg); color: var(--fg);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main { max-width: 34rem; padding: 2rem 1.25rem; }
h1 { font-size: 1.75rem; margin: 0 0 1rem; letter-spacing: -0.01em; }
h1 span { color: var(--accent); font-weight: 400; }
p { margin: 0 0 1rem; }
footer { margin-top: 2.5rem; font-size: 0.85rem; color: var(--muted); }
a { color: inherit; }