html,body{height:100%;margin:0}
body{display:flex;align-items:center;justify-content:center;font-family:system-ui,sans-serif;background:#fafafa;color:#222}
main{text-align:center}
h1{font-size:3rem;letter-spacing:.1em;margin:0 0 .5rem}
p{color:#666;margin:0}
@media (prefers-color-scheme:dark){body{background:#111;color:#eee}p{color:#aaa}}