:root {
  --fond: #f6f5f2;
  --texte: #3a3a38;
  --police: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fond: #1c1c1b;
    --texte: #d6d5d0;
  }
}

html, body {
  margin: 0;
  height: 100%;
}

body {
  background: var(--fond);
  color: var(--texte);
  font-family: var(--police);
}

main {
  min-height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  box-sizing: border-box;
}

h1 {
  margin: 0;
  font-weight: 400;
  font-size: 1.5rem;
  letter-spacing: 0.02em;
}