:root { color-scheme: dark; }
body {
  margin: 0;
  min-height: 100vh;
  background: #101114;
  color: #d7dbe2;
  font: 16px/1.5 ui-sans-serif, system-ui, sans-serif;
}
main { max-width: 36rem; margin: 12vh auto; padding: 0 1.5rem; }
.mark { letter-spacing: 0.18em; text-transform: uppercase; color: #8b93a1; font-size: 12px; }
h1 { font-weight: 560; font-size: 2rem; margin: 0.2rem 0 0.8rem; }
p { margin: 0; color: #b7bec9; }