/* ═══════════════════════════════════════════════════════════════
   Menuiserie RIEU — Site vitrine
   Palette : marine #12294f · marine clair #1a3a6e · orange #e67e22
   ═══════════════════════════════════════════════════════════════ */
:root{
  --navy-dark:#0d1f3d;
  --navy:#1a3a6e;
  --navy-light:#2c4d84;
  --accent:#e67e22;
  --accent-dark:#c8681a;
  --cream:#faf7f2;
  --bg:#ffffff;
  --text:#25313f;
  --muted:#5c6b7a;
  --border:#e4e8ee;
  --radius:14px;
  --shadow:0 10px 40px rgba(13,31,61,.10);
  --shadow-lg:0 20px 60px rgba(13,31,61,.16);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Segoe UI',system-ui,-apple-system,sans-serif;
  color:var(--text); background:var(--bg); line-height:1.65;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{max-width:1280px;margin:0 auto;padding:0 32px}
.section{padding:110px 0}
.section-sm{padding:64px 0}
h1,h2,h3,h4{line-height:1.15;color:var(--navy-dark);font-weight:800}
h1{font-size:clamp(2.4rem,5.5vw,4.2rem);letter-spacing:-.02em}
h2{font-size:clamp(1.9rem,3.6vw,2.75rem);letter-spacing:-.015em}
h3{font-size:1.3rem;font-weight:700}
p{color:var(--muted);font-size:1.05rem}
.lede{font-size:1.2rem;color:var(--muted);max-width:640px}

.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(230,126,34,.1); color:var(--accent-dark);
  font-size:.78rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;
  padding:7px 166px;border-radius:100px;margin-bottom:20px;
}
.eyebrow::before{content:'';width:6px;height:6px;border-radius:50%;background:var(--accent)}

/* ── Boutons ── */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:16px 32px;border-radius:10px;font-weight:700;font-size:1rem;
  border:2px solid transparent;cursor:pointer;transition:all .22s cubic-bezier(.4,0,.2,1);
}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 8px 24px rgba(230,126,34,.32)}
.btn-accent:hover{background:var(--accent-dark);transform:translateY(-2px);box-shadow:0 12px 32px rgba(230,126,34,.4)}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:var(--navy-light);transform:translateY(-2px)}
.btn-outline{background:transparent;border-color:rgba(255,255,255,.4);color:#fff}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.08)}
.btn-outline-navy{background:transparent;border-color:var(--border);color:var(--navy)}
.btn-outline-navy:hover{border-color:var(--navy);background:var(--cream)}
.btn svg{width:18px;height:18px;transition:transform .2s}
.btn:hover svg{transform:translateX(3px)}

/* ══════════════════════════════════════
   NAV — bandeau de passage entre profils
   ══════════════════════════════════════ */
.nav{
  position:sticky;top:0;z-index:200;
  background:rgba(13,31,61,.92); backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(255,255,255,.08);
}
.nav-inner{
  max-width:1280px;margin:0 auto;padding:0 32px;height:76px;
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.logo{display:flex;align-items:center;gap:12px;font-weight:800;font-size:1.15rem;color:#fff}
.logo-mark{
  width:38px;height:38px;border-radius:9px;flex-shrink:0;
  background:linear-gradient(135deg,var(--accent),var(--accent-dark));
  display:flex;align-items:center;justify-content:center;color:#fff;font-weight:900;font-size:1rem;
}
.logo small{display:block;font-size:.68rem;font-weight:600;color:rgba(255,255,255,.55);letter-spacing:.06em;text-transform:uppercase;margin-top:1px}

.profile-switch{
  display:flex;align-items:center;gap:4px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);
  border-radius:100px;padding:5px;
}
.profile-switch a{
  padding:9px 18px;border-radius:100px;font-size:.86rem;font-weight:700;
  color:rgba(255,255,255,.65); transition:all .2s;white-space:nowrap;
}
.profile-switch a:hover{color:#fff}
.profile-switch a.active{background:var(--accent);color:#fff}

.nav-toggle{display:none;background:none;border:none;color:#fff;cursor:pointer;padding:8px}
.nav-toggle svg{width:26px;height:26px}

@media(max-width:760px){
  .nav-inner{height:64px;padding:0 20px}
  .profile-switch{
    position:fixed;top:64px;left:0;right:0;
    flex-direction:column;background:var(--navy-dark);border-radius:0;
    padding:12px;gap:2px;border:none;border-top:1px solid rgba(255,255,255,.08);
    transform:translateY(-8px);opacity:0;pointer-events:none;transition:all .22s;
  }
  .profile-switch.open{transform:translateY(0);opacity:1;pointer-events:auto}
  .profile-switch a{width:100%;text-align:center;padding:14px}
  .nav-toggle{display:block}
}

/* ══════════════════════════════════════
   HERO générique
   ══════════════════════════════════════ */
.hero{
  position:relative;background:var(--navy-dark);color:#fff;overflow:hidden;
  padding:120px 0 100px;
}
.hero::before{
  content:'';position:absolute;inset:0;
  background:
    radial-gradient(ellipse 900px 500px at 15% -10%, rgba(230,126,34,.25), transparent 60%),
    radial-gradient(ellipse 700px 600px at 100% 110%, rgba(44,77,132,.5), transparent 60%);
  pointer-events:none;
}
.hero-grid{
  position:absolute;inset:0;opacity:.35;pointer-events:none;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 85%);
}
.hero-inner{position:relative;z-index:1}
.hero h1{color:#fff;max-width:780px}
.hero .lede{color:rgba(255,255,255,.72);margin-top:22px}
.hero-actions{display:flex;gap:16px;margin-top:38px;flex-wrap:wrap}

/* ── Hero en 2 colonnes avec vignette photo (pages profil) ── */
.hero-split-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center}
@media(max-width:900px){.hero-split-grid{grid-template-columns:1fr;gap:32px}}
.hero-media{position:relative;border-radius:18px;overflow:hidden;aspect-ratio:4/3;box-shadow:0 20px 60px rgba(0,0,0,.35)}
.hero-media img{width:100%;height:100%;object-fit:cover;display:block}
.hero-media .cap{position:absolute;left:14px;bottom:14px;background:rgba(13,31,61,.72);backdrop-filter:blur(66px);color:#fff;font-size:.72rem;font-weight:700;padding:7px 13px;border-radius:100px}
.hero-stats{display:flex;gap:44px;margin-top:64px;flex-wrap:wrap}
.hero-stat b{display:block;font-size:2.1rem;font-weight:800;color:#fff}
.hero-stat span{font-size:.85rem;color:rgba(255,255,255,.55);text-transform:uppercase;letter-spacing:.05em}

/* ── Badge RGE / Qualibat flottant ── */
.badge-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:36px}
.trust-badge{
  display:flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
  padding:11px 18px;border-radius:11px;font-size:.85rem;font-weight:700;color:#fff;
}
.trust-badge svg{width:20px;height:20px;color:var(--accent);flex-shrink:0}

/* ══════════════════════════════════════
   Cartes de choix (page d'accueil)
   ══════════════════════════════════════ */
.choice-wrap{
  min-height:100vh;display:flex;flex-direction:column;
  background:var(--navy-dark);position:relative;overflow:hidden;
}
.choice-wrap::before{
  content:'';position:absolute;inset:0;
  background:
    radial-gradient(ellipse 1000px 600px at 50% -10%, rgba(230,126,34,.18), transparent 60%);
  pointer-events:none;
}
.choice-header{position:relative;z-index:1;text-align:center;padding:90px 32px 20px}
.choice-header h1{color:#fff}
.choice-header p{color:rgba(255,255,255,.65);margin:18px auto 0;max-width:560px;font-size:1.1rem}

.choice-grid{
  position:relative;z-index:1;flex:1;
  display:grid;grid-template-columns:repeat(4,1fr);gap:18px;
  max-width:1320px;margin:64px auto 0;padding:0 32px 0;
  width:100%;
}
.choice-card{
  position:relative;overflow:hidden;
  background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.09);
  border-radius:20px;padding:44px 34px 40px;
  display:flex;flex-direction:column;min-height:380px;
  transition:all .35s cubic-bezier(.4,0,.2,1);
}
.choice-card:hover{
  border-color:rgba(230,126,34,.5);
  transform:translateY(-8px);box-shadow:0 24px 60px rgba(0,0,0,.35);
}
.choice-card::before{
  content:'';position:absolute;inset:0;z-index:0;
  background-image:var(--bg,none);background-size:cover;background-position:center;
  opacity:0;transform:scale(1.06);
  transition:opacity .45s cubic-bezier(.4,0,.2,1),transform .6s cubic-bezier(.4,0,.2,1);
}
.choice-card::after{
  content:'';position:absolute;inset:0;z-index:0;
  background:linear-gradient(180deg,rgba(13,31,61,.55) 0%,rgba(13,31,61,.88) 100%);
  opacity:0;transition:opacity .45s cubic-bezier(.4,0,.2,1);
}
.choice-card:hover::before{opacity:.55;transform:scale(1)}
.choice-card:hover::after{opacity:1}
.choice-card>*{position:relative;z-index:1}
.choice-icon{
  width:60px;height:60px;border-radius:14px;
  background:linear-gradient(135deg,var(--accent),var(--accent-dark));
  display:flex;align-items:center;justify-content:center;margin-bottom:28px;
  box-shadow:0 10px 26px rgba(230,126,34,.3);
}
.choice-icon svg{width:30px;height:30px;color:#fff}
.choice-card h3{color:#fff;font-size:1.5rem;margin-bottom:12px}
.choice-card p{color:rgba(255,255,255,.6);font-size:.98rem;flex:1}
.choice-cta{
  display:inline-flex;align-items:center;gap:8px;margin-top:26px;
  font-weight:700;color:var(--accent);font-size:.95rem;
}
.choice-card:hover .choice-cta svg{transform:translateX(4px)}
.choice-cta svg{width:16px;height:16px;transition:transform .2s}

.choice-footer{position:relative;z-index:1;text-align:center;padding:50px 32px 60px;color:rgba(255,255,255,.4);font-size:.85rem}

.choice-card.depannage{
  background:rgba(230,126,34,.07);border-color:rgba(230,126,34,.28);
  cursor:pointer;
}
.choice-card.depannage:hover{background:rgba(230,126,34,.12);border-color:var(--accent)}
.choice-card.depannage .choice-icon{background:linear-gradient(135deg,#e74c3c,#c0392b);box-shadow:0 10px 26px rgba(231,76,60,.32)}

@media(max-width:1100px){
  .choice-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .choice-grid{grid-template-columns:1fr;gap:16px;margin-top:44px}
  .choice-card{min-height:auto}
}

/* ── Blobs animés (fond dynamique) ── */
.choice-wrap .blob{
  position:absolute;border-radius:50%;filter:blur(70px);pointer-events:none;z-index:0;
  opacity:.55;animation:blobFloat 18s ease-in-out infinite;
}
.choice-wrap .blob-1{width:520px;height:520px;background:radial-gradient(circle,rgba(230,126,34,.35),transparent 70%);top:-160px;left:-120px;animation-delay:0s}
.choice-wrap .blob-2{width:460px;height:460px;background:radial-gradient(circle,rgba(44,77,132,.5),transparent 70%);bottom:-180px;right:-100px;animation-delay:-6s}
.choice-wrap .blob-3{width:340px;height:340px;background:radial-gradient(circle,rgba(230,126,34,.2),transparent 70%);top:40%;left:55%;animation-delay:-12s}
@keyframes blobFloat{
  0%,100%{transform:translate(0,0) scale(1)}
  33%{transform:translate(40px,-30px) scale(1.08)}
  66%{transform:translate(-30px,25px) scale(.95)}
}
@media(prefers-reduced-motion:reduce){.choice-wrap .blob{animation:none}}

/* ══════════════════════════════════════
   Modale (dépannage, etc.)
   ══════════════════════════════════════ */
.modal-overlay{
  position:fixed;inset:0;background:rgba(13,31,61,.72);backdrop-filter:blur(4px);
  z-index:500;display:flex;align-items:center;justify-content:center;padding:24px;
  opacity:0;pointer-events:none;transition:opacity .25s;
}
.modal-overlay.open{opacity:1;pointer-events:auto}
.modal-box{
  background:#fff;border-radius:20px;max-width:480px;width:100%;
  padding:36px 34px;position:relative;box-shadow:var(--shadow-lg);
  transform:translateY(16px) scale(.98);transition:transform .25s;
}
.modal-overlay.open .modal-box{transform:translateY(0) scale(1)}
.modal-close{
  position:absolute;top:16px;right:16px;width:34px;height:34px;border-radius:50%;
  border:none;background:var(--cream);color:var(--navy);cursor:pointer;
  display:flex;align-items:center;justify-content:center;font-size:1.1rem;
}
.modal-close:hover{background:var(--border)}
.modal-box h3{margin-bottom:8px}
.modal-box .lede{font-size:.95rem;margin-bottom:24px}
.modal-actions{display:flex;flex-direction:column;gap:12px}
.modal-call{
  display:flex;align-items:center;gap:14px;background:var(--cream);
  border-radius:14px;padding:16px 18px;border:1.5px solid var(--border);
}
.modal-call svg{width:26px;height:26px;color:var(--accent);flex-shrink:0}
.modal-call b{display:block;color:var(--navy);font-size:1.15rem}
.modal-call span{font-size:.8rem;color:var(--muted)}
.modal-divider{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:.78rem;margin:2px 0}
.modal-divider::before,.modal-divider::after{content:'';flex:1;height:1px;background:var(--border)}
.modal-form{display:flex;flex-direction:column;gap:12px}
.modal-form input,.modal-form textarea{
  width:100%;padding:11px 13px;border:1.5px solid var(--border);border-radius:8px;
  font-size:.9rem;font-family:inherit;
}
.modal-form textarea{resize:vertical}
.modal-msg{font-size:.82rem;text-align:center;display:none}

/* ══════════════════════════════════════
   Sections communes
   ══════════════════════════════════════ */
.section-head{max-width:640px;margin-bottom:56px}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}

.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:28px}
@media(max-width:860px){.grid-3{grid-template-columns:1fr 1fr}.grid-2{grid-template-columns:1fr}}
@media(max-width:600px){.grid-3{grid-template-columns:1fr}}

.card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:34px 30px;transition:all .25s}
.card:hover{box-shadow:var(--shadow);transform:translateY(-4px);border-color:transparent}
.card-icon{
  width:52px;height:52px;border-radius:12px;background:var(--cream);
  display:flex;align-items:center;justify-content:center;margin-bottom:20px;
}
.card-icon svg{width:26px;height:26px;color:var(--accent)}
.card h3{margin-bottom:10px}
.card p{font-size:.95rem}

/* ── Bloc image placeholder (à remplacer par vraies photos) ── */
.ph{
  position:relative;border-radius:var(--radius);overflow:hidden;
  background:linear-gradient(135deg,var(--navy) 0%,var(--navy-light) 55%,var(--accent-dark) 130%);
  background-size:cover;background-position:center;
  aspect-ratio:4/3;display:flex;align-items:flex-end;
  isolation:isolate;
}
.ph::after{
  content:'';position:absolute;inset:0;
  background-image:
    repeating-linear-gradient(45deg,rgba(255,255,255,.04) 0 2px,transparent 2px 14px);
  z-index:0;
}
.ph-tag{
  position:relative;z-index:1;margin:18px;
  background:rgba(13,31,61,.55);backdrop-filter:blur(6px);
  color:rgba(255,255,255,.85);font-size:.72rem;font-weight:700;
  padding:7px 13px;border-radius:100px;letter-spacing:.03em;
}
.ph.square{aspect-ratio:1/1}
.ph.wide{aspect-ratio:16/9}
.ph.tall{aspect-ratio:3/4}

/* ── Bandes alternées texte/image ── */
.split{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.split.reverse .split-media{order:2}
@media(max-width:860px){.split{grid-template-columns:1fr;gap:36px}.split.reverse .split-media{order:0}}
.split ul.check-list{margin-top:24px;display:flex;flex-direction:column;gap:14px}
.check-list li{display:flex;gap:12px;align-items:flex-start;color:var(--text);font-size:1rem}
.check-list svg{width:22px;height:22px;color:var(--accent);flex-shrink:0;margin-top:1px}

/* ── Bande couleur pleine largeur ── */
.band{background:var(--navy-dark);color:#fff;position:relative;overflow:hidden}
.band::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(ellipse 800px 400px at 90% 0%,rgba(230,126,34,.2),transparent 60%);
}
.band .section-head h2, .band h2{color:#fff}
.band p{color:rgba(255,255,255,.68)}

/* ── Zone chips (départements) ── */
.zone-chips{display:flex;flex-wrap:wrap;gap:12px;margin-top:8px}
.zone-chip{
  display:flex;align-items:center;gap:10px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);
  padding:14px 22px;border-radius:12px;
}
.zone-chip b{font-size:1.3rem;color:var(--accent);font-weight:800}
.zone-chip span{font-size:.82rem;color:rgba(255,255,255,.65)}

/* ── Timeline / process ── */
.process{display:grid;grid-template-columns:repeat(4,1fr);gap:0;position:relative}
.process-step{position:relative;padding:0 24px 0 0}
.process-step::before{
  content:attr(data-n);position:absolute;top:0;left:0;
  font-size:2.6rem;font-weight:900;color:var(--border);line-height:1;
}
.process-step{padding-top:56px}
.process-step h3{font-size:1.05rem;margin-bottom:8px}
.process-step p{font-size:.9rem}
.process-step:not(:last-child)::after{
  content:'';position:absolute;top:26px;left:56px;right:0;height:2px;
  background:repeating-linear-gradient(90deg,var(--border) 0 6px,transparent 6px 12px);
}
@media(max-width:900px){.process{grid-template-columns:1fr 1fr;row-gap:40px}}
@media(max-width:560px){.process{grid-template-columns:1fr}}

/* ── CTA final ── */
.cta-block{
  background:linear-gradient(135deg,var(--navy) 0%,var(--navy-dark) 100%);
  border-radius:28px;padding:70px 60px;color:#fff;text-align:center;
  position:relative;overflow:hidden;
}
.cta-block::before{
  content:'';position:absolute;inset:0;
  background:radial-gradient(ellipse 600px 300px at 50% 0%,rgba(230,126,34,.3),transparent 70%);
}
.cta-block *{position:relative;z-index:1}
.cta-block h2{color:#fff}
.cta-block p{color:rgba(255,255,255,.7);max-width:520px;margin:16px auto 0}
.cta-block .btn-row{display:flex;gap:16px;justify-content:center;margin-top:32px;flex-wrap:wrap}
@media(max-width:600px){.cta-block{padding:50px 28px}}

/* ══════════════════════════════════════
   Footer
   ══════════════════════════════════════ */
.footer{background:var(--navy-dark);color:rgba(255,255,255,.55);padding:64px 0 28px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer h4{color:#fff;font-size:.85rem;text-transform:uppercase;letter-spacing:.06em;margin-bottom:18px}
.footer ul{display:flex;flex-direction:column;gap:11px}
.footer a{font-size:.92rem;color:rgba(255,255,255,.55);transition:color .2s}
.footer a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;padding-top:24px;font-size:.82rem;flex-wrap:wrap;gap:10px}
@media(max-width:800px){.footer-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media(max-width:520px){.footer-grid{grid-template-columns:1fr}}

/* ══════════════════════════════════════
   Reveal au scroll (dynamique, léger)
   ══════════════════════════════════════ */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s cubic-bezier(.16,1,.3,1),transform .7s cubic-bezier(.16,1,.3,1)}
.reveal.visible{opacity:1;transform:translateY(0)}
.reveal-stagger.visible .reveal-child{opacity:1;transform:translateY(0)}
.reveal-child{opacity:0;transform:translateY(20px);transition:opacity .6s cubic-bezier(.16,1,.3,1),transform .6s cubic-bezier(.16,1,.3,1)}
.reveal-child:nth-child(1){transition-delay:.05s}
.reveal-child:nth-child(2){transition-delay:.15s}
.reveal-child:nth-child(3){transition-delay:.25s}
.reveal-child:nth-child(4){transition-delay:.35s}

/* ══════════════════════════════════════
   Fond animé — assemblage de menuiserie (accueil)
   ══════════════════════════════════════ */
.choice-wrap{position:relative;overflow:hidden}
.rieu-anim-bg{
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:100vh;
  min-height:640px;
  overflow:hidden;
  pointer-events:none;
  z-index: 0; /* Derrière les tuiles */
  opacity: 0.15; /* Subtil (15%) */
}
.choice-wrap>.choice-header,
.choice-wrap>.choice-grid,
.choice-wrap>.choice-footer{
  position:relative;
}

/* Cycle complet : 45s pour 3 scènes (15s chacune), transitions resserrées (~0.5s de
   fondu au lieu de ~2s précédemment) : fenêtre → coulissant 3 vantaux → fenêtre cintrée. */
.rieu-anim-bg .assembly-scene{
  position:absolute;
  left:65%;
  top:50%;
  transform:translate(-50%,-50%) scale(1.60);
  animation:rieuScene1Fade 45s ease-in-out infinite;
}
@keyframes rieuScene1Fade{0%{opacity:0}1%{opacity:1}31%{opacity:1}33%{opacity:0}}
.rieu-anim-bg .assembly{position:relative;width:2px;height:2px}

/* étape 1 : barre brute 6,5ml */
.rieu-anim-bg .raw-bar{position:absolute;left:50%;top:50%;width:380px;height:18px;margin-left:-190px;margin-top:-9px;background:linear-gradient(180deg,rgba(255,255,255,.25),rgba(255,255,255,.1));border-radius:2px;box-shadow:0 2px 10px rgba(0,0,0,.15);animation:rieuRawBar 45s ease-in-out infinite}
@keyframes rieuRawBar{
  0%{opacity:1;transform:translateX(-420px) rotate(-4deg)}
  2%{opacity:1;transform:translateX(0) rotate(0deg)}
  4.3%{opacity:1;transform:translateX(0) rotate(0deg)}
  5.3%{opacity:0;transform:translateX(0) rotate(0deg)}
  33%{opacity:0}
}
.rieu-anim-bg .cut-tick{position:absolute;left:50%;top:50%;width:2px;height:30px;margin-top:-15px;background:repeating-linear-gradient(rgba(230,126,34,.95) 0 3px,transparent 3px 6px);animation:rieuCutTick 45s ease-in-out infinite}
.rieu-anim-bg .ct-1{margin-left:-96px}
.rieu-anim-bg .ct-2{margin-left:82px}
@keyframes rieuCutTick{0%,2%{opacity:0}2.6%{opacity:1}4.3%{opacity:1}5.3%{opacity:0}33%{opacity:0}}
.rieu-anim-bg .offcut{position:absolute;left:50%;top:50%;width:54px;height:18px;background:linear-gradient(180deg,rgba(255,255,255,.15),rgba(255,255,255,.05));border-radius:2px;animation:rieuOffcut 45s ease-in-out infinite}
.rieu-anim-bg .oc-1{margin-left:-190px;margin-top:-9px}
.rieu-anim-bg .oc-2{margin-left:136px;margin-top:-9px}
@keyframes rieuOffcut{
  0%,2.6%{opacity:0;transform:translate(0,0) rotate(0deg)}
  3%{opacity:1;transform:translate(0,0) rotate(0deg)}
  5.3%{opacity:0;transform:translate(70px,-55px) rotate(30deg)}
  33%{opacity:0}
}

/* étape 2 : dormant */
.rieu-anim-bg .bar{position:absolute;left:50%;top:50%;background:linear-gradient(180deg,rgba(255,255,255,.22),rgba(255,255,255,.08));border-radius:2px;box-shadow:0 2px 10px rgba(0,0,0,.15)}
.rieu-anim-bg .dorm-h{width:300px;height:16px;margin-left:-150px}
.rieu-anim-bg .dorm-v{width:16px;height:360px;margin-top:-180px}
.rieu-anim-bg .dorm-top{margin-top:-180px;animation:rieuDormTop 45s ease-in-out infinite}
.rieu-anim-bg .dorm-bottom{margin-top:164px;animation:rieuDormBottom 45s ease-in-out infinite;animation-delay:.1s}
.rieu-anim-bg .dorm-left{margin-left:-150px;animation:rieuDormLeft 45s ease-in-out infinite;animation-delay:.25s}
.rieu-anim-bg .dorm-right{margin-left:134px;animation:rieuDormRight 45s ease-in-out infinite;animation-delay:.35s}
@keyframes rieuDormTop{0%,5%{opacity:0;transform:translate(-230px,-200px) rotate(-24deg)}6%{opacity:.5;transform:translate(-230px,-200px) rotate(-24deg)}10.2%{opacity:1;transform:translate(0,0) rotate(0deg)}33%{opacity:1;transform:translate(0,0) rotate(0deg)}}
@keyframes rieuDormBottom{0%,5%{opacity:0;transform:translate(240px,200px) rotate(19deg)}6%{opacity:.5;transform:translate(240px,200px) rotate(19deg)}10.2%{opacity:1;transform:translate(0,0) rotate(0deg)}33%{opacity:1;transform:translate(0,0) rotate(0deg)}}
@keyframes rieuDormLeft{0%,5%{opacity:0;transform:translate(-250px,160px) rotate(15deg)}6%{opacity:.5;transform:translate(-250px,160px) rotate(15deg)}10.2%{opacity:1;transform:translate(0,0) rotate(0deg)}33%{opacity:1;transform:translate(0,0) rotate(0deg)}}
@keyframes rieuDormRight{0%,5%{opacity:0;transform:translate(260px,-170px) rotate(-17deg)}6%{opacity:.5;transform:translate(260px,-170px) rotate(-17deg)}10.2%{opacity:1;transform:translate(0,0) rotate(0deg)}33%{opacity:1;transform:translate(0,0) rotate(0deg)}}

.rieu-anim-bg .corner-dot{position:absolute;width:8px;height:8px;background:#e67e22;border-radius:1px;left:50%;top:50%;animation:rieuCornerPulse 45s ease-in-out infinite}
.rieu-anim-bg .cd-tl{margin-left:-146px;margin-top:-176px}
.rieu-anim-bg .cd-tr{margin-left:138px;margin-top:-176px}
.rieu-anim-bg .cd-bl{margin-left:-146px;margin-top:168px}
.rieu-anim-bg .cd-br{margin-left:138px;margin-top:168px}
@keyframes rieuCornerPulse{0%,9.2%{opacity:0;transform:scale(.4)}10.9%{opacity:1;transform:scale(1.3)}12.2%{opacity:.85;transform:scale(1)}33%{opacity:.85;transform:scale(1)}}

/* étape 3 : ouvrant — 2 vantaux */
.rieu-anim-bg .sash-h{width:260px;height:10px;margin-left:-130px}
.rieu-anim-bg .sash-v{width:10px;height:320px;margin-top:-160px}
.rieu-anim-bg .sash-top{margin-top:-160px;animation:rieuSashTop 45s ease-in-out infinite}
.rieu-anim-bg .sash-bottom{margin-top:150px;animation:rieuSashBottom 45s ease-in-out infinite;animation-delay:.1s}
.rieu-anim-bg .sash-left{margin-left:-130px;animation:rieuSashLeft 45s ease-in-out infinite;animation-delay:.2s}
.rieu-anim-bg .sash-right{margin-left:120px;animation:rieuSashRight 45s ease-in-out infinite;animation-delay:.3s}
.rieu-anim-bg .sash-mid{width:14px;height:300px;margin-left:-7px;margin-top:-150px}
.rieu-anim-bg .sash-mullion{animation:rieuSashMid 45s ease-in-out infinite;animation-delay:.4s}
@keyframes rieuSashTop{0%,11.9%{opacity:0;transform:translate(180px,-150px) rotate(20deg)}12.9%{opacity:.5;transform:translate(180px,-150px) rotate(20deg)}16.5%{opacity:1;transform:translate(0,0) rotate(0deg)}33%{opacity:1;transform:translate(0,0) rotate(0deg)}}
@keyframes rieuSashBottom{0%,11.9%{opacity:0;transform:translate(-190px,150px) rotate(-18deg)}12.9%{opacity:.5;transform:translate(-190px,150px) rotate(-18deg)}16.5%{opacity:1;transform:translate(0,0) rotate(0deg)}33%{opacity:1;transform:translate(0,0) rotate(0deg)}}
@keyframes rieuSashLeft{0%,11.9%{opacity:0;transform:translate(-200px,-130px) rotate(-14deg)}12.9%{opacity:.5;transform:translate(-200px,-130px) rotate(-14deg)}16.5%{opacity:1;transform:translate(0,0) rotate(0deg)}33%{opacity:1;transform:translate(0,0) rotate(0deg)}}
@keyframes rieuSashRight{0%,11.9%{opacity:0;transform:translate(210px,140px) rotate(16deg)}12.9%{opacity:.5;transform:translate(210px,140px) rotate(16deg)}16.5%{opacity:1;transform:translate(0,0) rotate(0deg)}33%{opacity:1;transform:translate(0,0) rotate(0deg)}}
@keyframes rieuSashMid{0%,13.2%{opacity:0;transform:translateY(-70px)}14.5%{opacity:.6;transform:translateY(-70px)}17.8%{opacity:1;transform:translateY(0)}33%{opacity:1;transform:translateY(0)}}

/* étape 4+5 : parclose → vitrage → joint, par vantail */
.rieu-anim-bg .pane-pos{position:absolute;top:50%;width:113px;height:300px;margin-top:-150px}
.rieu-anim-bg .pane-l{left:50%;margin-left:-120px}
.rieu-anim-bg .pane-r{left:50%;margin-left:7px}
.rieu-anim-bg .pane-frame{border:2.5px solid rgba(255,255,255,0);border-radius:1px;animation:rieuFrameFade 45s ease-in-out infinite}
.rieu-anim-bg .pane-fill{background:linear-gradient(155deg,rgba(255,255,255,.15),rgba(255,255,255,.05));opacity:0;animation:rieuFillFade 45s ease-in-out infinite;box-shadow:inset 0 0 24px rgba(255,255,255,.05)}
@keyframes rieuFrameFade{
  0%,17.8%{border-color:rgba(255,255,255,0)}
  19.1%{border-color:rgba(255,255,255,.55)}
  25.1%{border-color:rgba(255,255,255,.55)}
  27.1%{border-color:rgba(230,126,34,.65)}
  33%{border-color:rgba(230,126,34,.65)}
}
@keyframes rieuFillFade{0%,21.8%{opacity:0}23.8%{opacity:1}33%{opacity:1}}

/* ══════════════════════════════════════
   Scène 2 : la fenêtre se désassemble et se transforme en coulissant 3 vantaux
   (occupe le 2e tiers du cycle de 45s, soit 15s)
   ══════════════════════════════════════ */
.rieu-anim-bg .assembly-scene-2{
  position:absolute;
  left:30%;
  top:50%;
  transform:translate(-50%,-50%) scale(1.60);
  animation:rieuScene2Fade 45s ease-in-out infinite;
}
@keyframes rieuScene2Fade{0%,32%{opacity:0}33%{opacity:1}65%{opacity:1}67%{opacity:0}}
.rieu-anim-bg .assembly2{position:relative;width:2px;height:2px}

.rieu-anim-bg .s2-bar{position:absolute;left:50%;top:50%;background:linear-gradient(180deg,rgba(255,255,255,.22),rgba(255,255,255,.08));border-radius:2px;box-shadow:0 2px 10px rgba(0,0,0,.15)}
.rieu-anim-bg .s2-dorm-h{width:300px;height:16px;margin-left:-150px}
.rieu-anim-bg .s2-dorm-v{width:16px;height:360px;margin-top:-180px}
.rieu-anim-bg .s2-dorm-top,.rieu-anim-bg .s2-dorm-bottom,.rieu-anim-bg .s2-dorm-left,.rieu-anim-bg .s2-dorm-right{opacity:0;animation:rieuS2DormFade 45s ease-in-out infinite}
.rieu-anim-bg .s2-dorm-top{margin-top:-180px}
.rieu-anim-bg .s2-dorm-bottom{margin-top:164px}
.rieu-anim-bg .s2-dorm-left{margin-left:-150px}
.rieu-anim-bg .s2-dorm-right{margin-left:134px}
@keyframes rieuS2DormFade{0%,33%{opacity:0}34.5%{opacity:1}64%{opacity:1}67%{opacity:0}}

/* fenêtre existante (reprise de la scène 1), qui se désassemble en tout début de scène 2 */
.rieu-anim-bg .s2-old-mullion{width:14px;height:300px;margin-left:-7px;margin-top:-150px;animation:rieuS2OldMullion 45s ease-in-out infinite}
@keyframes rieuS2OldMullion{0%,33%{opacity:1;transform:translateY(0) rotate(0deg)}38.5%{opacity:0;transform:translate(0,-90px) rotate(25deg)}100%{opacity:0}}
.rieu-anim-bg .s2-old-pane{position:absolute;top:50%;width:113px;height:300px;margin-top:-150px;background:linear-gradient(155deg,rgba(255,255,255,.15),rgba(255,255,255,.05));box-shadow:inset 0 0 24px rgba(255,255,255,.05)}
.rieu-anim-bg .s2-old-pane-l{left:50%;margin-left:-120px;animation:rieuS2OldPaneL 45s ease-in-out infinite}
.rieu-anim-bg .s2-old-pane-r{left:50%;margin-left:7px;animation:rieuS2OldPaneR 45s ease-in-out infinite}
@keyframes rieuS2OldPaneL{0%,33%{opacity:1;transform:translate(0,0) rotate(0deg)}39%{opacity:0;transform:translate(-90px,40px) rotate(-20deg)}100%{opacity:0}}
@keyframes rieuS2OldPaneR{0%,33%{opacity:1;transform:translate(0,0) rotate(0deg)}39%{opacity:0;transform:translate(90px,40px) rotate(20deg)}100%{opacity:0}}

/* rails du coulissant, glissent en place depuis les bords */
.rieu-anim-bg .s2-rail{width:8px;height:328px;margin-top:-164px;opacity:0}
.rieu-anim-bg .s2-rail-1{margin-left:-49px;animation:rieuS2Rail1 45s ease-in-out infinite}
.rieu-anim-bg .s2-rail-2{margin-left:41px;animation:rieuS2Rail2 45s ease-in-out infinite}
@keyframes rieuS2Rail1{0%,40%{opacity:0;transform:translateX(-140px)}44%{opacity:1;transform:translateX(0)}67%{opacity:1;transform:translateX(0)}}
@keyframes rieuS2Rail2{0%,40%{opacity:0;transform:translateX(140px)}44%{opacity:1;transform:translateX(0)}67%{opacity:1;transform:translateX(0)}}

/* les 3 vitrages du coulissant */
.rieu-anim-bg .s2-pane{position:absolute;top:50%;width:85px;height:320px;margin-top:-160px;background:linear-gradient(155deg,rgba(255,255,255,.15),rgba(255,255,255,.05));box-shadow:inset 0 0 24px rgba(255,255,255,.05);opacity:0;animation:rieuS2Pane 45s ease-in-out infinite}
.rieu-anim-bg .s2-pane-1{left:50%;margin-left:-132px}
.rieu-anim-bg .s2-pane-2{left:50%;margin-left:-42px;animation-delay:.1s}
.rieu-anim-bg .s2-pane-3{left:50%;margin-left:48px;animation-delay:.17s}
@keyframes rieuS2Pane{0%,45%{opacity:0}48%{opacity:1}67%{opacity:1}}

/* flèche indiquant le sens de coulissement (va-et-vient dans le panneau central) */
.rieu-anim-bg .s2-slide-line{position:absolute;left:50%;top:50%;width:70px;height:2px;margin-left:-35px;background:rgba(230,126,34,.5);opacity:0;animation:rieuS2SlideShow 45s ease-in-out infinite}
.rieu-anim-bg .s2-slide-arrow{position:absolute;left:50%;top:50%;width:0;height:0;border-top:6px solid transparent;border-bottom:6px solid transparent;border-left:10px solid #e67e22;margin-top:-6px;opacity:0;animation:rieuS2SlideArrow 45s ease-in-out infinite}
@keyframes rieuS2SlideShow{0%,51%{opacity:0}53%{opacity:1}63%{opacity:1}65%,67%{opacity:0}}
@keyframes rieuS2SlideArrow{
  0%,51%{opacity:0;margin-left:-20px}
  53%{opacity:1;margin-left:-20px}
  58%{opacity:1;margin-left:20px}
  63%{opacity:1;margin-left:-20px}
  65%,67%{opacity:0}
}

/* ══════════════════════════════════════
   Scène 3 : le coulissant se désassemble et se transforme en fenêtre cintrée
   (occupe le 3e tiers du cycle de 45s, soit 15s)
   ══════════════════════════════════════ */
.rieu-anim-bg .assembly-scene-3{
  position:absolute;
  left:65%;
  top:50%;
  transform:translate(-50%,-50%) scale(1.60);
  animation:rieuScene3Fade 45s ease-in-out infinite;
}
@keyframes rieuScene3Fade{0%,65%{opacity:0}67%{opacity:1}98%{opacity:1}100%{opacity:0}}
.rieu-anim-bg .assembly3{position:relative;width:2px;height:2px}

.rieu-anim-bg .s3-frame{
  position:absolute;left:50%;top:50%;width:268px;height:320px;margin-left:-134px;margin-top:-170px;
  border:16px solid rgba(255,255,255,.22);border-radius:134px 134px 6px 6px;
  box-shadow:0 2px 10px rgba(0,0,0,.15);opacity:0;transform:scale(.82);
  animation:rieuS3Frame 45s ease-in-out infinite;
}
@keyframes rieuS3Frame{0%,67%{opacity:0;transform:scale(.82)}74%{opacity:1;transform:scale(1)}100%{opacity:1;transform:scale(1)}}
.rieu-anim-bg .s3-glass{
  position:absolute;left:50%;top:50%;width:236px;height:288px;margin-left:-118px;margin-top:-154px;
  background:linear-gradient(155deg,rgba(255,255,255,.15),rgba(255,255,255,.05));
  border-radius:118px 118px 4px 4px;box-shadow:inset 0 0 24px rgba(255,255,255,.05);
  opacity:0;animation:rieuS3Glass 45s ease-in-out infinite;
}
@keyframes rieuS3Glass{0%,80%{opacity:0}86%{opacity:1}100%{opacity:1}}
.rieu-anim-bg .s3-keystone{
  position:absolute;left:50%;top:50%;width:10px;height:10px;margin-left:-5px;margin-top:-176px;
  background:#e67e22;border-radius:1px;opacity:0;transform:scale(.4);
  animation:rieuS3Keystone 45s ease-in-out infinite;
}
@keyframes rieuS3Keystone{0%,74%{opacity:0;transform:scale(.4)}76.5%{opacity:1;transform:scale(1.3)}78.5%{opacity:.85;transform:scale(1)}100%{opacity:.85;transform:scale(1)}}

/* responsive + accessibilité */
@media (max-width:900px){
  .rieu-anim-bg .assembly-scene,
  .rieu-anim-bg .assembly-scene-3{
    transform:translate(-50%,-50%) scale(1.07);
    left:68%;
    top:40%;
  }
  .rieu-anim-bg .assembly-scene-2{
    transform:translate(-50%,-50%) scale(1.07);
    left:32%;
    top:40%;
  }
}
@media (max-width:560px){
  .rieu-anim-bg{display:none}
}
@media (prefers-reduced-motion:reduce){
  .rieu-anim-bg *{animation:none!important;opacity:1!important}
}