/* Vitrine IBU : identité propre (nuit E-DEFENCE, cyan, motif de carte), photos domaine public, captures réelles. */
:root { --nuit: #0a1f44; --nuit-2: #10295a; --cyan: #06b6d4; --cyan-sombre: #0e7490; --sable: #f5f1ea; --texte: #12213b; --doux: #5b6b85; --bord: #d9e1ee; --blanc: #ffffff; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; font-family: 'Segoe UI', Arial, sans-serif; color: var(--texte); background: var(--blanc); font-size: 16px; line-height: 1.55; }
img { max-width: 100%; display: block; }
a { color: var(--cyan-sombre); }
.cadre { width: 100%; max-width: 1180px; margin: 0 auto; padding: 0 24px; }
.cadre.etroit { max-width: 820px; }
.sur { text-transform: uppercase; letter-spacing: 2px; font-size: 12px; font-weight: 700; color: var(--cyan-sombre); margin: 0 0 8px; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 14px; }
h2 { font-size: 32px; }
p { text-align: justify; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 10px 18px; border-radius: 10px; font-weight: 600; text-decoration: none; border: 2px solid transparent; font-size: 15px; cursor: pointer; }
.btn.cyan { background: var(--cyan); color: #07111f; }
.btn.cyan:hover { background: #22c7e3; }
.btn.ligne { border-color: var(--nuit); color: var(--nuit); background: transparent; }
.btn.ligne-clair { border-color: #fff; color: #fff; }
.btn.grand { padding: 13px 22px; font-size: 16px; }
.cartouche { background: #fff; border-radius: 10px; padding: 6px 12px; display: inline-flex; align-items: center; }
.cartouche img { height: 34px; width: auto; }

/* En-tête */
.entete { position: sticky; top: 0; z-index: 20; background: rgba(10, 31, 68, .97); box-shadow: 0 2px 14px rgba(0,0,0,.18); }
.entete-in { display: flex; align-items: center; gap: 18px; min-height: 70px; }
.nav { display: flex; gap: 20px; margin-left: auto; }
.nav a { color: #d6e2f3; text-decoration: none; font-size: 15px; }
.nav a:hover { color: #fff; }
.langues { display: inline-flex; border: 1px solid rgba(255,255,255,.3); border-radius: 99px; overflow: hidden; }
.langues button { border: 0; background: transparent; color: #b9c8e0; padding: 5px 10px; font: inherit; font-size: 12px; font-weight: 700; cursor: pointer; }
.langues button.actif { background: var(--cyan); color: #07111f; }
.burger { display: none; background: transparent; border: 0; padding: 6px; cursor: pointer; }
.burger span { display: block; width: 24px; height: 2px; background: #fff; margin: 5px 0; }

/* Accueil */
.hero { background: radial-gradient(1200px 500px at 85% 10%, #12397a 0%, var(--nuit) 60%); color: #fff; overflow: hidden; }
.hero-in { display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; padding: 64px 24px 72px; }
.hero h1 { font-size: 46px; }
.hero .sur { color: var(--cyan); }
.lead { font-size: 18px; color: #d6e2f3; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; margin: 26px 0 10px; }
.hero .btn.ligne { border-color: #fff; color: #fff; }
.note { font-size: 13px; color: #9fb3d4; }
.hero-visuel { position: relative; padding-bottom: 50px; }
.carrousel { position: relative; aspect-ratio: 4 / 3; border-radius: 18px; overflow: hidden; border: 6px solid rgba(255,255,255,.08); box-shadow: 0 30px 60px rgba(0,0,0,.35); }
.diapo { position: absolute; inset: 0; margin: 0; opacity: 0; transition: opacity .9s ease; }
.diapo.actif { opacity: 1; }
.diapo img { width: 100%; height: 100%; object-fit: cover; }
.points { position: absolute; bottom: 12px; left: 0; right: 0; display: flex; justify-content: center; gap: 8px; }
.points button { width: 10px; height: 10px; border-radius: 50%; border: 0; background: rgba(255,255,255,.5); cursor: pointer; padding: 0; }
.points button.actif { background: var(--cyan); }
.carte-ibu { position: absolute; left: -28px; bottom: 0; background: linear-gradient(135deg, #12397a, var(--nuit)); border: 1px solid var(--cyan); border-radius: 16px; padding: 16px 20px; display: grid; gap: 3px; box-shadow: 0 18px 40px rgba(0,0,0,.4); min-width: 290px; }
.carte-ibu::after { content: ""; position: absolute; right: 14px; top: 14px; width: 34px; height: 26px; border-radius: 5px; background: linear-gradient(135deg, #f4d58d, #c79a3b); }
.carte-ibu .et { color: var(--cyan); font-size: 11px; letter-spacing: 3px; font-weight: 700; }
.carte-ibu .num { font-family: Consolas, 'Courier New', monospace; font-size: 22px; letter-spacing: 1px; }
.carte-ibu .lig { font-size: 12px; color: #b9c8e0; }
.carte-ibu .ex { font-size: 11px; color: #7f93b5; }

/* Atouts */
.atouts { background: var(--cyan); color: #07111f; }
.atouts-in { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 28px 24px; }
.atouts strong { display: block; font-size: 36px; line-height: 1; margin-bottom: 6px; }
.atouts span { font-size: 14px; }

/* Sections */
.section { padding: 80px 0; }
.section.clair { background: var(--sable); }
.section.sombre { background: var(--nuit); color: #e8f0fa; }
.section.sombre .sur { color: var(--cyan); }
.etapes { list-style: none; padding: 0; margin: 30px 0 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; counter-reset: e; }
.etapes li { background: #fff; border: 1px solid var(--bord); border-radius: 14px; padding: 20px; position: relative; }
.etapes li:not(:last-child)::after { content: ""; position: absolute; right: -14px; top: 38px; width: 10px; height: 10px; border-top: 2px solid var(--cyan); border-right: 2px solid var(--cyan); transform: rotate(45deg); }
.etapes .n { display: inline-flex; width: 36px; height: 36px; border-radius: 50%; background: var(--nuit); color: var(--cyan); align-items: center; justify-content: center; font-weight: 700; margin-bottom: 12px; }
.etapes h3 { font-size: 17px; }
.etapes p { font-size: 14px; margin: 0; text-align: left; }
.bloc { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; padding: 34px 0; }
.bloc.inverse .bloc-media { order: 2; }
.bloc-media img { border-radius: 16px; }
.bloc-media.photo img { aspect-ratio: 4 / 3; object-fit: cover; width: 100%; box-shadow: 0 20px 40px rgba(10,31,68,.18); }
.bloc-media.capture { background: var(--nuit); border-radius: 18px; padding: 14px; box-shadow: 0 20px 40px rgba(10,31,68,.25); }
.bloc-media.capture img { border-radius: 10px; }
.coches { list-style: none; padding: 0; margin: 0; }
.coches li { padding: 6px 0 6px 30px; position: relative; }
.coches li::before { content: ""; position: absolute; left: 4px; top: 13px; width: 12px; height: 7px; border-left: 2px solid var(--cyan-sombre); border-bottom: 2px solid var(--cyan-sombre); transform: rotate(-45deg); }
.lien { font-weight: 600; text-decoration: none; border-bottom: 2px solid var(--cyan); }
.tuiles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 26px; }
.tuile { background: var(--nuit-2); border: 1px solid #23427c; border-radius: 14px; padding: 22px; }
.tuile svg { width: 34px; height: 34px; fill: none; stroke: var(--cyan); stroke-width: 1.8; margin-bottom: 10px; }
.tuile p { font-size: 14px; color: #b9c8e0; text-align: left; }
.pourqui { display: grid; grid-template-columns: .9fr 1.1fr; gap: 48px; align-items: center; }
.pourqui-photo img { border-radius: 18px; aspect-ratio: 4 / 5; object-fit: cover; width: 100%; }
.cibles { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.cibles div { border-left: 4px solid var(--cyan); background: #f6f9fc; padding: 14px 16px; border-radius: 0 12px 12px 0; }
.cibles h3 { font-size: 17px; margin-bottom: 6px; }
.cibles p { font-size: 14px; margin: 0; text-align: left; }
.partenaires { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 24px; }
.partenaire { background: #fff; border-radius: 14px; padding: 22px; border: 1px solid var(--bord); }
.partenaire .cartouche { border: 1px solid var(--bord); margin-bottom: 12px; }
.partenaire p { font-size: 14px; margin: 0; text-align: left; }
details { border-bottom: 1px solid var(--bord); padding: 14px 0; }
summary { font-weight: 600; cursor: pointer; font-size: 17px; }
details p { margin: 10px 0 0; color: #33445f; }
.final { position: relative; color: #fff; text-align: center; overflow: hidden; }
.final > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.final::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(10,31,68,.92), rgba(10,31,68,.7)); z-index: 1; }
.final-in { position: relative; z-index: 2; padding: 90px 24px; }
.final h2 { font-size: 36px; }
.final p { text-align: center; color: #d6e2f3; max-width: 640px; margin: 0 auto; }
.final .cta { justify-content: center; }
.pied { background: #071630; color: #b9c8e0; padding: 46px 0 20px; font-size: 14px; }
.pied-in { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 30px; }
.pied h3 { color: #fff; font-size: 15px; }
.pied a { display: block; color: #b9c8e0; text-decoration: none; padding: 3px 0; }
.pied a:hover { color: #fff; }
.pied p { text-align: left; }
.credits { font-size: 12px; color: #7f93b5; margin-top: 24px; }

@media (max-width: 1000px) {
  .etapes { grid-template-columns: 1fr 1fr; }
  .etapes li::after { display: none; }
  .tuiles { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 860px) {
  .burger { display: block; }
  .nav { display: none; position: absolute; top: 70px; left: 0; right: 0; background: var(--nuit); flex-direction: column; padding: 14px 24px; gap: 12px; }
  .nav.ouvert { display: flex; }
  .entete-in { gap: 10px; }
  .entete .btn.cyan { padding: 8px 12px; font-size: 14px; margin-left: auto; }
  .hero-in, .bloc, .pourqui { grid-template-columns: 1fr; gap: 30px; }
  .bloc.inverse .bloc-media { order: 0; }
  .hero h1 { font-size: 32px; }
  .carte-ibu { left: 10px; right: 10px; min-width: 0; }
  .atouts-in { grid-template-columns: 1fr 1fr; }
  .partenaires, .cibles, .pied-in { grid-template-columns: 1fr; }
  .pourqui-photo img { aspect-ratio: 16 / 10; }
  h2 { font-size: 26px; }
}
@media (max-width: 480px) {
  .cadre { padding: 0 16px; }
  .hero-in { padding: 40px 16px 56px; }
  .etapes, .tuiles, .atouts-in { grid-template-columns: 1fr; }
  .entete .cartouche img { height: 28px; }
  .langues button { padding: 4px 7px; }
  .carte-ibu .num { font-size: 18px; }
  .section { padding: 56px 0; }
  p { text-align: left; }
}