:root { color-scheme: light dark; --bg: #f7f6f2; --fg: #1d1d1b; --mute: #6b6b66; }
@media (prefers-color-scheme: dark) { :root { --bg: #161615; --fg: #ecebe6; --mute: #9a9a94; } }
html, body { margin: 0; height: 100%; background: var(--bg); color: var(--fg);
  font: 18px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
main { min-height: 100%; display: grid; place-content: center; text-align: center; padding: 0 16px; }
h1 { font-size: clamp(2rem, 8vw, 3.5rem); margin: 0 0 .25em; letter-spacing: -.02em; }
p { margin: 0; color: var(--mute); }