:root {
  --fond: #f7f8f6;
  --carte: #ffffff;
  --texte: #1c2321;
  --doux: #5b6663;
  --vert: #0f7a4f;
  --vert-clair: #e3f2ea;
  --bord: #dde3e0;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fond: #111615;
    --carte: #1a2120;
    --texte: #e8eeec;
    --doux: #9aa7a3;
    --vert: #3fbf87;
    --vert-clair: #17332a;
    --bord: #2b3533;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--fond);
  color: var(--texte);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--vert); }
.page { max-width: 820px; margin: 0 auto; padding: 0 16px 64px; }
header.haut { display: flex; align-items: center; justify-content: space-between; padding: 20px 0; }
.logo { font-weight: 800; font-size: 22px; text-decoration: none; color: var(--texte); display: flex; align-items: center; gap: 10px; }
.logo svg { flex: none; }
nav a { margin-left: 18px; text-decoration: none; color: var(--doux); font-size: 15px; }
.hero { padding: 40px 0 24px; }
.hero h1 { font-size: clamp(30px, 6vw, 46px); line-height: 1.15; margin: 0 0 16px; letter-spacing: -0.02em; }
.hero p { font-size: 19px; color: var(--doux); margin: 0 0 28px; max-width: 620px; }
.bouton { display: inline-block; background: var(--vert); color: #fff; padding: 13px 22px; border-radius: 10px; text-decoration: none; font-weight: 600; }
.bouton.inactif { opacity: .55; pointer-events: none; }
.note { font-size: 14px; color: var(--doux); margin-top: 10px; }
.grille { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin: 40px 0; }
.bloc { background: var(--carte); border: 1px solid var(--bord); border-radius: 14px; padding: 20px; }
.bloc h3 { margin: 0 0 6px; font-size: 17px; }
.bloc p { margin: 0; color: var(--doux); font-size: 15px; }
.prix { background: var(--vert-clair); border-radius: 14px; padding: 22px; }
.doc h1 { font-size: 32px; margin: 24px 0 4px; }
.doc h2 { font-size: 21px; margin: 32px 0 8px; }
.doc .maj { color: var(--doux); font-size: 14px; }
.a-completer { background: #fff3c4; color: #5a4500; padding: 0 4px; border-radius: 4px; }
footer.bas { border-top: 1px solid var(--bord); margin-top: 56px; padding-top: 20px; font-size: 14px; color: var(--doux); }
footer.bas a { color: var(--doux); margin-right: 16px; }
@media (max-width: 520px) { nav a { margin-left: 12px; font-size: 14px; } }