:root {
  --fond: #fafaf9;
  --texte: #1c1917;
  --discret: #57534e;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fond: #0c0a09;
    --texte: #f5f5f4;
    --discret: #a8a29e;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1rem;
  box-sizing: border-box;
  background: var(--fond);
  color: var(--texte);
  font: 1rem/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  text-align: center;
}

h1 { margin: 0; font-size: 2.5rem; letter-spacing: -0.02em; }
p { margin: 0.5rem 0 0; color: var(--discret); }