:root {
  --fond: #faf8f6;
  --doux: #f3ece2;
  --encre: #141414;
  --gris: #5f5a54;
  --ligne: #e4dcd0;
  --or: #b88a2e;
  --blanc: #ffffff;
  --rayon: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--fond);
  color: var(--encre);
  font: 400 17px/1.6 'Jost', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}
img, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
h1, h2, h3, h4 { font-weight: 500; line-height: 1.15; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(2.4rem, 5.5vw, 4rem); font-weight: 400; }
h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); font-weight: 400; }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }
.largeur { width: min(1160px, 100% - 32px); margin-inline: auto; }
.etroit { width: min(760px, 100% - 32px); }
.centre { text-align: center; }
.surtitre { text-transform: uppercase; letter-spacing: .18em; font-size: .78rem; color: var(--gris); margin-bottom: .9em; }

/* Boutons */
.bouton {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .95em 1.8em; border-radius: 999px;
  background: var(--encre); color: var(--blanc); text-decoration: none;
  font-weight: 500; letter-spacing: .02em;
  transition: transform .2s, background .2s;
}
.bouton:hover { transform: translateY(-2px); background: #2b2b2b; }
.bouton.clair { background: transparent; color: var(--encre); box-shadow: inset 0 0 0 1.5px var(--encre); }
.bouton.clair:hover { background: var(--encre); color: var(--blanc); }
.bouton.petit { padding: .6em 1.3em; font-size: .92rem; }
.bouton.large { width: 100%; margin: 6px 0 28px; }
.bouton:focus-visible, .pastille:focus-visible, summary:focus-visible { outline: 3px solid var(--or); outline-offset: 3px; }

/* En-tête */
.entete { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--fond) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--ligne); }
.entete-ligne { display: flex; align-items: center; gap: 28px; height: 68px; }
.marque img { width: 150px; }
.menu { display: flex; gap: 26px; margin-left: auto; }
.menu a { text-decoration: none; color: var(--gris); font-size: .95rem; }
.menu a:hover { color: var(--encre); }

/* Accroche */
.accroche { padding: 56px 0 72px; background: linear-gradient(180deg, var(--fond), var(--doux)); }
.accroche-grille { display: grid; grid-template-columns: 1fr 1.1fr; gap: 48px; align-items: center; }
.chapeau { font-size: 1.12rem; color: var(--gris); max-width: 32em; }
.prix-ligne { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin: 22px 0; }
.prix-ligne.centre { justify-content: center; }
.prix { font-size: 2rem; font-weight: 500; }
.etiquette { background: var(--blanc); border: 1px solid var(--ligne); border-radius: 999px; padding: .3em .9em; font-size: .88rem; color: var(--gris); }
.actions { display: flex; gap: 12px; flex-wrap: wrap; }
.garanties { list-style: none; padding: 0; margin: 28px 0 0; display: flex; gap: 22px; flex-wrap: wrap; color: var(--gris); font-size: .9rem; }
.garanties li::before { content: '✓'; color: var(--or); margin-right: 7px; font-weight: 600; }
.accroche-photo { margin: 0; }
.accroche-photo img, .produit-photo img, .photo-large img { border-radius: var(--rayon); }

/* Blocs */
.bloc { padding: 88px 0; }
.fond-doux { background: var(--doux); }
.video-cadre { margin-top: 36px; border-radius: var(--rayon); overflow: hidden; background: #000; box-shadow: 0 30px 60px -30px rgba(40, 30, 20, .45); }
.video-cadre video { width: 100%; aspect-ratio: 16 / 9; }

.trois { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.point, .info { background: var(--fond); border-radius: var(--rayon); padding: 30px; }
.point .numero { display: block; font-size: 3rem; font-weight: 300; line-height: 1; margin-bottom: 14px; color: var(--or); }
.point p, .info p { color: var(--gris); margin: 0; }

/* Produit */
.produit-grille { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: start; }
.produit-photo { margin: 0; position: sticky; top: 92px; }
.libelle { margin: 0 0 10px; }
.pastilles { display: flex; gap: 12px; margin-bottom: 14px; }
.pastille {
  width: 40px; height: 40px; border-radius: 50%; border: 0; cursor: pointer;
  background: var(--c); box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .18), 0 0 0 3px var(--fond), 0 0 0 4px transparent;
  transition: box-shadow .2s;
}
.pastille.actif { box-shadow: inset 0 0 0 1px rgba(0, 0, 0, .18), 0 0 0 3px var(--fond), 0 0 0 5px var(--encre); }
.note { font-size: .93rem; color: var(--gris); }
.caracteristiques { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--ligne); }
.caracteristiques li { display: grid; grid-template-columns: 120px 1fr; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--ligne); font-size: .96rem; }
.caracteristiques span { color: var(--gris); }

/* Étapes */
.etapes { list-style: none; padding: 0; margin: 40px 0 48px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.etapes li span { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; border: 1.5px solid var(--encre); margin-bottom: 16px; font-weight: 500; }
.etapes p { color: var(--gris); margin: 0; }
.photo-large { margin: 0; }

/* Pour qui */
.deux { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.liste-puces { list-style: none; margin: 0; padding: 0; }
.liste-puces li { padding: 14px 0; border-bottom: 1px solid var(--ligne); font-size: 1.08rem; }
.liste-puces li::before { content: '—'; color: var(--or); margin-right: 12px; }

/* Questions */
details { border-bottom: 1px solid var(--ligne); padding: 6px 0; }
details:first-of-type { margin-top: 28px; border-top: 1px solid var(--ligne); }
summary { cursor: pointer; list-style: none; padding: 16px 32px 16px 0; font-weight: 500; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: '+'; position: absolute; right: 4px; top: 12px; font-size: 1.4rem; font-weight: 300; transition: transform .2s; }
details[open] summary::after { transform: rotate(45deg); }
details p { color: var(--gris); }

/* Dernier appel */
.final { background: var(--encre); color: var(--blanc); }
.final .symbole { margin: 0 auto 24px; filter: invert(1); }
.final .etiquette { background: transparent; color: #d8d2c8; border-color: #4a4640; }
.final .bouton { background: var(--blanc); color: var(--encre); }
.final .bouton:hover { background: var(--doux); }

/* Pied de page */
.pied { padding: 64px 0 28px; border-top: 1px solid var(--ligne); font-size: .95rem; }
.pied-grille { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 32px; }
.pied-logo { width: 120px; margin-bottom: 16px; }
.pied h4 { font-size: .8rem; text-transform: uppercase; letter-spacing: .16em; color: var(--gris); margin-bottom: 14px; }
.pied p { margin: 0 0 8px; color: var(--gris); }
.pied a { text-decoration: none; }
.pied a:hover { color: var(--encre); text-decoration: underline; }
.copyright { margin-top: 40px; color: var(--gris); font-size: .85rem; }

/* Téléphone et tablette */
@media (max-width: 860px) {
  .menu { display: none; }
  .entete-ligne { justify-content: space-between; }
  .accroche { padding: 32px 0 56px; }
  .accroche-grille, .produit-grille, .deux { grid-template-columns: 1fr; gap: 32px; }
  .accroche-photo { order: -1; }
  .produit-photo { position: static; }
  .trois, .etapes { grid-template-columns: 1fr; }
  .bloc { padding: 64px 0; }
  .pied-grille { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .bouton { transition: none; }
}