:root { color-scheme: light dark; }
body { margin: 0; font-family: system-ui, -apple-system, sans-serif; display: grid; place-items: center; min-height: 100vh; background: #0f172a; color: #e2e8f0; }
main { text-align: center; padding: 2rem; }
h1 { font-size: 2.5rem; margin-bottom: 0.5rem; }
p { color: #94a3b8; }