:root {
  --encre: #141414;
  --gris: #5c5f66;
  --filet: #141414;
  --fond: #ffffff;
  --fond-2: #f4f5f7;
  --bleu: #1f4e79;
  --bleu-clair: #dfe9f3;
  --ok: #1b7a43;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Hanken Grotesk", system-ui, sans-serif;
  color: var(--encre);
  background: var(--fond);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.cadre { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 24px; }

/* barre */
.barre { position: sticky; top: 0; z-index: 10; background: rgba(255,255,255,.94); backdrop-filter: blur(8px); border-bottom: 1px solid var(--filet); }
.barre-in { display: flex; align-items: center; gap: 32px; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; font-size: 20px; letter-spacing: .02em; }
.logo img { border-radius: 7px; }
.liens { display: flex; gap: 28px; margin-left: auto; }
.liens a { text-decoration: none; font-weight: 500; font-size: 15px; padding: 4px 0; border-bottom: 2px solid transparent; }
.liens a:hover { border-color: var(--encre); }

/* boutons */
.bouton { display: inline-block; background: var(--encre); color: #fff; text-decoration: none; font-weight: 600; padding: 16px 26px; border: 1px solid var(--encre); transition: background .15s; }
.bouton:hover { background: var(--bleu); border-color: var(--bleu); }
.bouton.petit { padding: 10px 16px; font-size: 14px; }
.bouton.inverse { background: #fff; color: var(--encre); border-color: #fff; }
.bouton.inverse:hover { background: var(--bleu-clair); }
.lien-fleche { font-weight: 600; text-decoration: none; border-bottom: 2px solid var(--encre); padding-bottom: 2px; }
.lien-fleche::after { content: " \2192"; }

/* titres */
.surtitre { font-size: 13px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--bleu); margin-bottom: 18px; }
.surtitre.clair { color: #9cc0e3; }
h1 { font-size: clamp(44px, 8vw, 104px); line-height: .98; font-weight: 800; letter-spacing: -.035em; }
h2 { font-size: clamp(32px, 4.6vw, 58px); line-height: 1.04; font-weight: 800; letter-spacing: -.03em; max-width: 18ch; }
h3 { font-size: 21px; font-weight: 700; letter-spacing: -.01em; margin-bottom: 8px; }
.bleu { color: var(--bleu); }

/* hero */
.hero { padding-top: 88px; padding-bottom: 72px; border-bottom: 1px solid var(--filet); }
.hero-bas { display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; align-items: end; margin-top: 48px; }
.chapeau { font-size: 20px; color: var(--gris); max-width: 52ch; }
.actions { display: flex; align-items: center; gap: 28px; flex-wrap: wrap; justify-content: flex-end; }

/* demo */
.demo { display: grid; grid-template-columns: 420px 1fr; gap: 72px; align-items: center; padding-top: 72px; padding-bottom: 72px; border-bottom: 1px solid var(--filet); }
.tel { border: 1px solid var(--filet); background: var(--fond-2); }
.tel-tete { display: flex; align-items: center; gap: 12px; padding: 14px 16px; background: #fff; border-bottom: 1px solid var(--filet); }
.tel-tete small { display: block; color: var(--ok); font-size: 12px; }
.avatar { width: 38px; height: 38px; border-radius: 50%; overflow: hidden; display: block; }
.avatar img { width: 100%; height: 100%; display: block; }
.fil { display: flex; flex-direction: column; gap: 8px; padding: 18px 14px 22px; font-size: 15px; }
.bulle { max-width: 84%; padding: 10px 13px; border-radius: 16px; line-height: 1.4; }
.bulle.moi { align-self: flex-end; background: var(--bleu); color: #fff; border-bottom-right-radius: 4px; }
.bulle.lui { align-self: flex-start; background: #fff; border-bottom-left-radius: 4px; box-shadow: 0 1px 0 rgba(0,0,0,.06); }
.bulle.piece { display: flex; flex-direction: column; border-left: 4px solid var(--bleu); }
.piece-titre { font-weight: 700; font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--bleu); margin-bottom: 2px; }
.piece-ligne { color: var(--gris); font-size: 14px; }
.bulle.ok { color: var(--ok); font-weight: 600; }
.points { list-style: none; display: grid; gap: 0; }
.points li { padding: 26px 0; border-top: 1px solid var(--filet); font-size: 18px; color: var(--gris); }
.points li:last-child { border-bottom: 1px solid var(--filet); }
.points strong { display: block; color: var(--encre); font-size: 22px; margin-bottom: 4px; }

/* sections */
.section { padding-top: 96px; padding-bottom: 96px; }
.tete-section { margin-bottom: 56px; }
.grille { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--filet); border-left: 1px solid var(--filet); }
.grille article { padding: 32px 28px 36px; border-right: 1px solid var(--filet); border-bottom: 1px solid var(--filet); }
.grille p, .etapes p, .offres p { color: var(--gris); }
.num { display: block; font-weight: 800; color: var(--bleu); font-size: 15px; margin-bottom: 28px; }

.bande { background: var(--encre); color: #fff; }
.etapes { list-style: none; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid #3a3a3a; }
.etapes li { padding: 32px 28px 8px 0; }
.etapes li + li { padding-left: 28px; border-left: 1px solid #3a3a3a; }
.etapes span { display: block; font-size: 64px; font-weight: 800; line-height: 1; color: #9cc0e3; margin-bottom: 20px; }
.bande .etapes p { color: #b8bcc4; }

.deux { display: grid; grid-template-columns: 1fr 1fr; gap: 0 56px; }
.liste { list-style: none; }
.liste li { padding: 20px 0; border-top: 1px solid var(--filet); color: var(--gris); }
.liste strong { color: var(--encre); }

.offres { display: grid; grid-template-columns: 1fr 1fr; border: 1px solid var(--filet); }
.offres article { padding: 40px 36px; }
.offres article + article { border-left: 1px solid var(--filet); }
.offres h3 { font-size: 30px; }
.adresse { margin-top: 28px; font-weight: 700; color: var(--bleu) !important; font-size: 17px; }

.contact { background: var(--bleu); color: #fff; }
.contact h2 { max-width: 20ch; margin-bottom: 20px; }
.contact p { font-size: 20px; color: #d6e3f0; max-width: 56ch; margin-bottom: 36px; }

.pied { display: flex; gap: 24px; flex-wrap: wrap; justify-content: space-between; padding-top: 28px; padding-bottom: 40px; font-size: 14px; color: var(--gris); }
.pied span:first-child { font-weight: 800; color: var(--encre); }

/* telephone */
@media (max-width: 900px) {
  .liens { display: none; }
  .barre-in { justify-content: space-between; }
  .hero { padding-top: 56px; }
  .hero-bas, .demo, .deux, .offres { grid-template-columns: 1fr; }
  .actions { justify-content: flex-start; }
  .demo { gap: 40px; }
  .grille, .etapes { grid-template-columns: 1fr; }
  .etapes li + li { padding-left: 0; border-left: 0; border-top: 1px solid #3a3a3a; }
  .offres article + article { border-left: 0; border-top: 1px solid var(--filet); }
  .section { padding-top: 64px; padding-bottom: 64px; }
}
@media (max-width: 480px) {
  .cadre { padding: 0 16px; }
  .bouton.petit { padding: 9px 12px; font-size: 13px; }
  .chapeau { font-size: 18px; }
}