:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color-scheme:light dark}
body{margin:0;min-height:100vh;display:grid;place-items:center;background:Canvas;color:CanvasText}
.card{width:min(38rem,calc(100% - 3rem));padding:2rem;border:1px solid color-mix(in srgb,CanvasText 18%,transparent);border-radius:1rem}
h1{margin:.6rem 0 1rem;font-size:1.65rem}
p{line-height:1.55}.meta{opacity:.6;font-size:.9rem}nav{display:flex;gap:1rem;margin-top:1.5rem}a{color:LinkText}