:root { color-scheme: light dark; }
* { margin: 0; box-sizing: border-box; }
body {
  font-family: system-ui, sans-serif;
  display: grid;
  place-items: center;
  min-height: 100vh;
  background: #0b0e14;
  color: #e6edf3;
}
main { max-width: 40rem; padding: 2rem; line-height: 1.6; }
h1 { font-size: 2.5rem; margin-bottom: 1rem; }
code { background: #1c2333; padding: 0.15em 0.4em; }
p + p { margin-top: 0.75rem; }