:root { color-scheme: light dark; }
html, body { margin: 0; padding: 0; height: 100%; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; }
body { display: grid; place-items: center; background: #fafafa; color: #111; }
@media (prefers-color-scheme: dark) { body { background: #111; color: #fafafa; } }
main { text-align: center; max-width: 36rem; padding: 2rem; }
h1 { font-size: 2.5rem; margin: 1rem 0 0.25rem; letter-spacing: -0.02em; }
p { margin: 0.5rem 0; font-size: 1.1rem; }
.muted { opacity: 0.65; font-size: 0.95rem; }