:root {
  --fond: #f4efe6;
  --encre: #142a4a;
  --doux: #5d6b82;
  --accent: #b4532a;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fond: #0f1b30;
    --encre: #f4efe6;
    --doux: #9aa8bf;
    --accent: #e08a5b;
  }
}
* { box-sizing: border-box; margin: 0; }
html, body { height: 100%; }
body {
  background: var(--fond);
  color: var(--encre);
  font-family: Georgia, "Times New Roman", serif;
  display: grid;
  place-items: center;
  padding: 24px;
  text-align: center;
}
.surtitre {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--doux);
  margin-bottom: 1.4rem;
}
h1 {
  font-size: clamp(2.4rem, 9vw, 5.5rem);
  line-height: 1.05;
  font-weight: 700;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.filet {
  display: block;
  width: 64px;
  height: 3px;
  background: var(--accent);
  margin: 2rem auto;
}
.bientot {
  font-size: clamp(1.3rem, 4vw, 2rem);
  font-style: italic;
  color: var(--accent);
}