:root { color-scheme: light dark; --bg: #f4f6f8; --fg: #1a1d21; --accent: #0a84ff; }
@media (prefers-color-scheme: dark) { :root { --bg: #15181c; --fg: #e8eaed; } }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; background: var(--bg); color: var(--fg); font: 18px/1.5 -apple-system, system-ui, sans-serif; padding: 16px; }
main { max-width: 40rem; text-align: center; }
h1 { font-size: 2rem; margin: 1rem 0 .25rem; }
.stamp { color: var(--accent); font-weight: 600; margin-top: 0; }
.version { opacity: .6; font-size: .9rem; }