:root { color-scheme: light dark; }
body {
  font: 16px/1.6 system-ui, sans-serif;
  margin: 0;
  display: grid;
  place-items: center;
  min-height: 100vh;
}
main { max-width: 40rem; padding: 2rem; }
h1 { margin-top: 0; }
.build { opacity: .6; font-size: .85rem; }
a { color: #3b82f6; }