/* Charte : Egonymous Design System (noir #000 et blanc #fff stricts, Jost 300/400/500,
   filets de 1 px, angles droits, aucune ombre). Police hébergée ici (licence OFL). */
@font-face{font-family:Jost;src:url(assets/jost.woff2) format("woff2");font-weight:300 500;font-display:swap}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{background:#fff;color:#000;font-family:Jost,system-ui,sans-serif;font-weight:300;
  font-size:18px;line-height:1.6}
img{display:block;max-width:100%;height:auto}
a{color:#000}
:focus-visible{outline:1px solid #000;outline-offset:4px}

/* Barre du haut */
.barre{position:sticky;top:0;z-index:10;background:#fff;border-bottom:1px solid #000;
  display:flex;align-items:center;justify-content:space-between;padding:14px clamp(20px,5vw,64px)}
.barre-marque{display:flex;align-items:center;gap:12px;text-decoration:none;
  font-weight:500;font-size:13px;letter-spacing:.25em}
.barre nav{display:flex;gap:clamp(14px,3vw,36px);align-items:center}
.barre nav a{text-decoration:none;font-weight:500;font-size:13px;letter-spacing:.12em;text-transform:uppercase}
.barre nav a:hover{text-decoration:underline;text-underline-offset:6px}
.barre-contact{border:1px solid #000;padding:8px 14px}
.barre-contact:hover{background:#000;color:#fff;text-decoration:none!important}

/* Commun */
.bloc,.ouverture{padding:clamp(72px,11vw,140px) clamp(20px,5vw,64px);max-width:1180px;margin:0 auto}
.bloc + .bloc{border-top:1px solid #000}
.surtitre{font-weight:500;font-size:12px;letter-spacing:.25em;text-transform:uppercase;margin-bottom:22px}
h1,h2,h3{font-weight:400;line-height:1.12;letter-spacing:-.01em}
h1{font-weight:300;font-size:clamp(42px,7.4vw,92px);margin-bottom:30px}
h2{font-size:clamp(30px,4.4vw,52px);margin-bottom:clamp(36px,5vw,60px);max-width:22ch}
h3{font-size:22px;margin-bottom:12px}
.numero{display:block;font-weight:500;font-size:12px;letter-spacing:.25em;margin-bottom:18px}

.bouton{display:inline-block;background:#000;color:#fff;border:1px solid #000;text-decoration:none;
  font-weight:500;font-size:13px;letter-spacing:.18em;text-transform:uppercase;padding:17px 28px;
  transition:background .15s,color .15s}
.bouton:hover{background:#fff;color:#000}
.bouton-creux{background:#fff;color:#000}
.bouton-creux:hover{background:#000;color:#fff}
.bouton-grand{font-size:clamp(14px,2.2vw,18px);letter-spacing:.12em;text-transform:none;padding:22px 34px}

.liste{list-style:none;margin:22px 0 32px}
.liste li{padding:11px 0 11px 26px;border-top:1px solid #000;position:relative}
.liste li:last-child{border-bottom:1px solid #000}
.liste li::before{content:"";position:absolute;left:4px;top:22px;width:8px;height:8px;border:1px solid #000;border-radius:50%}

/* Ouverture */
.ouverture{text-align:center;padding-top:clamp(56px,8vw,110px)}
.ouverture-logo{width:clamp(140px,18vw,200px);margin:0 auto clamp(40px,6vw,64px)}
.chapeau{font-size:clamp(19px,2.2vw,23px);max-width:40ch;margin:0 auto 44px}
.actions{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* Trois colonnes */
.trois{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid #000}
.trois li{padding:34px 34px 10px 0}
.trois li + li{border-left:1px solid #000;padding-left:34px}

/* Bloc noir */
.bloc-noir{max-width:none;background:#000;color:#fff;border-top:0!important}
.bloc-noir > *{max-width:1052px;margin-left:auto;margin-right:auto}
.bloc-noir h2{max-width:20ch;margin-left:auto;margin-right:auto}
.bloc-noir .soleil{filter:invert(1);margin-bottom:40px}
.bloc-noir + .bloc{border-top:0}
.deux{display:grid;grid-template-columns:1fr 1fr;gap:clamp(28px,5vw,72px);font-size:clamp(18px,1.9vw,21px)}

/* Exemple */
.exemple{display:grid;grid-template-columns:1fr 1.05fr;gap:clamp(36px,6vw,80px);align-items:center}
.note{font-size:14px;margin-top:16px}
.exemple-cadre{display:block;border:1px solid #000;text-decoration:none;transition:transform .2s}
.exemple-cadre:hover{transform:translateY(-4px)}
.cadre-barre{display:flex;align-items:center;gap:7px;border-bottom:1px solid #000;padding:12px 16px;
  font-size:13px;font-weight:400}
.cadre-barre i{width:9px;height:9px;border:1px solid #000;border-radius:50%}
.cadre-barre span{margin-left:10px}
.cadre-corps{display:flex;flex-direction:column;align-items:center;justify-content:center;
  text-align:center;aspect-ratio:4/3;padding:30px}
.cadre-titre{font-weight:300;font-size:clamp(34px,4.6vw,56px);line-height:1.05}
.cadre-sous{font-weight:500;font-size:12px;letter-spacing:.25em;text-transform:uppercase;margin-top:16px}
.cadre-trait{width:48px;border-top:1px solid #000;margin:28px 0}
.cadre-lien{font-weight:500;font-size:13px;letter-spacing:.15em;text-transform:uppercase}

/* Prix */
.tarifs{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid #000}
.tarif{padding:clamp(28px,4vw,48px)}
.tarif + .tarif{border-left:1px solid #000}
.montant{font-weight:300;font-size:clamp(40px,5.4vw,62px);line-height:1.1;margin-top:18px}
.a-partir{font-size:18px;letter-spacing:0}
.ttc{font-weight:500;font-size:13px;letter-spacing:.12em;text-transform:uppercase;margin-top:8px}
.tarif .liste{margin-bottom:0}
.options{margin-top:32px;display:grid;grid-template-columns:1fr 1fr;gap:clamp(20px,4vw,48px)}
.options strong{font-weight:500}

/* Étapes */
.etapes{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid #000}
.etapes li{padding:28px 24px 0 0}
.etapes li + li{padding-left:24px;border-left:1px solid #000}
.etapes .numero{font-size:40px;font-weight:300;letter-spacing:0;margin-bottom:10px}

/* Qui */
.qui{max-width:44em;font-size:clamp(19px,2vw,22px)}
.qui p + p{margin-top:20px}
.signature{font-weight:400;font-size:30px;letter-spacing:.02em}

/* Contact */
.bloc-contact{text-align:center}
.bloc-contact h2{margin-left:auto;margin-right:auto;margin-bottom:18px}
.bloc-contact p{margin-bottom:36px}

/* Pied */
.pied{border-top:1px solid #000;padding:56px clamp(20px,5vw,64px) 40px;text-align:center;font-size:14px}
.pied img{margin:0 auto 28px}
.pied details{max-width:640px;margin:0 auto}
.pied summary{cursor:pointer;font-weight:500;font-size:12px;letter-spacing:.25em;text-transform:uppercase;list-style:none}
.pied summary::-webkit-details-marker{display:none}
.pied details p{margin-top:12px;text-align:left}
.copyright{margin-top:28px;font-weight:500;font-size:12px;letter-spacing:.25em}

/* Téléphone et tablette */
@media (max-width:860px){
  body{font-size:17px}
  .trois,.etapes{grid-template-columns:1fr}
  .trois li,.trois li + li,.etapes li,.etapes li + li{border-left:0;padding:26px 0;border-bottom:1px solid #000}
  .deux,.exemple,.tarifs,.options{grid-template-columns:1fr}
  .tarif + .tarif{border-left:0;border-top:1px solid #000}
  .exemple-cadre{order:-1}
}
@media (max-width:520px){
  .barre-marque span{display:none}
  .barre nav a:not(.barre-contact){font-size:12px;letter-spacing:.08em}
  .actions .bouton{width:100%;text-align:center}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}