:root { color-scheme: light; font: 17px/1.6 system-ui, sans-serif; }
body { margin: 0; color: #183044; background: #f6f8fa; }
main { box-sizing: border-box; max-width: 46rem; margin: 4rem auto; padding: 2rem; background: white; }
h1 { line-height: 1.2; }
a { color: #0755a5; }
a:focus-visible { outline: 3px solid #ef9d22; outline-offset: 3px; }
@media (max-width: 600px) { main { margin: 0; min-height: 100vh; padding: 1.25rem; } }