:root { color-scheme: light dark; }
body { margin: 0; font-family: system-ui, sans-serif; line-height: 1.5; }
.skip-link { position: absolute; left: -999px; }
.skip-link:focus { left: 1rem; top: 1rem; }
header, main { padding: 1.5rem; max-width: 40rem; margin: 0 auto; }
a, button { min-height: 44px; }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; } }