/* ===== RESET & TOKENS ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --navy:#0f2e4a;
  --navy-2:#153a5e;
  --amber:#f5a623;
  --amber-dark:#e2900c;
  --ink:#1a2430;
  --muted:#5c6a79;
  --line:#e6ebf1;
  --bg:#ffffff;
  --bg-tint:#f4f7fa;
  --white:#fff;
  --radius:16px;
  --radius-sm:10px;
  --shadow:0 10px 30px rgba(15,46,74,.10);
  --shadow-lg:0 24px 60px rgba(15,46,74,.18);
  --maxw:1160px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --font:'Manrope',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --display:'Sora',var(--font);
}
html{scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}

.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:clamp(18px,4vw,40px)}
.container--narrow{max-width:820px}

/* ===== BUTTONS ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  font-family:var(--font);font-weight:700;font-size:.95rem;
  padding:.85rem 1.4rem;border-radius:999px;border:2px solid transparent;
  cursor:pointer;transition:transform .25s var(--ease),box-shadow .25s var(--ease),background .25s,color .25s;
  white-space:nowrap;
}
.btn--primary{background:var(--amber);color:var(--navy);box-shadow:0 8px 20px rgba(245,166,35,.35)}
.btn--primary:hover{background:var(--amber-dark);transform:translateY(-2px);box-shadow:0 12px 26px rgba(245,166,35,.45)}
.btn--ghost{background:transparent;border-color:rgba(255,255,255,.5);color:var(--white)}
.btn--ghost:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}
.section .btn--ghost,.header .btn--ghost{border-color:var(--line);color:var(--navy)}
.section .btn--ghost:hover{background:var(--bg-tint)}
.btn--sm{padding:.6rem 1rem;font-size:.85rem}
.btn--lg{padding:1rem 1.8rem;font-size:1.02rem}
.btn--block{width:100%}

/* ===== HEADER ===== */
.header{
  position:fixed;top:0;left:0;right:0;z-index:50;
  transition:background .3s,box-shadow .3s,padding .3s;
  padding:.5rem 0;
}
.header__inner{display:flex;align-items:center;justify-content:space-between;gap:1rem}
.header.scrolled{background:rgba(255,255,255,.92);backdrop-filter:blur(12px);box-shadow:0 4px 20px rgba(15,46,74,.08)}
.brand{display:flex;align-items:center;gap:.5rem;font-family:var(--display);font-weight:800;font-size:1.25rem;color:var(--white)}
.header.scrolled .brand{color:var(--navy)}
.brand__mark{background:var(--amber);color:var(--navy);padding:.15rem .5rem;border-radius:8px;letter-spacing:.5px}
.brand__text{font-weight:700}
.nav{display:flex;gap:1.6rem}
.nav a{font-weight:600;font-size:.95rem;color:rgba(255,255,255,.9);position:relative;padding:.3rem 0}
.header.scrolled .nav a{color:var(--ink)}
.nav a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--amber);transition:width .3s var(--ease)}
.nav a:hover::after{width:100%}
.header__actions{display:flex;gap:.6rem;align-items:center}
.header.scrolled .btn--ghost{border-color:var(--navy);color:var(--navy)}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:6px}
.burger span{width:26px;height:2px;background:var(--white);transition:.3s var(--ease)}
.header.scrolled .burger span{background:var(--navy)}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== HERO ===== */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;color:var(--white);overflow:hidden;background:var(--navy)}
.hero__bg{
  position:absolute;inset:-35% 0;
  background:linear-gradient(120deg,#0c2540,#15436b) ,url('img/hero.webp') center/cover no-repeat;
  background-blend-mode:multiply;
  will-change:transform;
}
.hero__overlay{position:absolute;inset:0;background:linear-gradient(90deg,rgba(9,28,48,.86) 0%,rgba(9,28,48,.55) 55%,rgba(9,28,48,.35) 100%)}
.hero__content{position:relative;z-index:2;max-width:720px;padding-block:7rem}
.hero__eyebrow{display:inline-block;font-weight:700;letter-spacing:.12em;text-transform:uppercase;font-size:.8rem;color:var(--amber);margin-bottom:1rem}
.hero__title{font-family:var(--display);font-weight:800;font-size:clamp(2.2rem,5.5vw,4rem);line-height:1.08;margin-bottom:1.2rem}
.hero__lead{font-size:clamp(1rem,1.4vw,1.2rem);color:rgba(255,255,255,.9);max-width:600px;margin-bottom:2rem}
.hero__cta{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:2.4rem}
.hero__badges{display:flex;gap:1.4rem;flex-wrap:wrap}
.hero__badges li{font-weight:600;font-size:.92rem;position:relative;padding-left:1.6rem;color:rgba(255,255,255,.92)}
.hero__badges li::before{content:"✓";position:absolute;left:0;color:var(--amber);font-weight:800}
.hero__scroll{position:absolute;bottom:26px;left:50%;transform:translateX(-50%);width:26px;height:44px;border:2px solid rgba(255,255,255,.6);border-radius:14px;z-index:2}
.hero__scroll::after{content:"";position:absolute;top:8px;left:50%;transform:translateX(-50%);width:4px;height:8px;background:var(--amber);border-radius:2px;animation:scrolldot 1.6s infinite}
@keyframes scrolldot{0%{opacity:0;transform:translate(-50%,0)}40%{opacity:1}80%{opacity:0;transform:translate(-50%,14px)}}

/* ===== TRUST ===== */
.trust{background:var(--navy);color:var(--white)}
.trust__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;padding-block:2.4rem;text-align:center}
.trust__item strong{display:block;font-family:var(--display);font-size:clamp(1.8rem,4vw,2.6rem);color:var(--amber);line-height:1}
.trust__item span{font-size:.9rem;color:rgba(255,255,255,.75)}

/* ===== SECTIONS ===== */
.section{padding-block:clamp(4rem,8vw,7rem)}
.section--tint{background:var(--bg-tint)}
.section__head{max-width:680px;margin:0 auto 3rem;text-align:center}
.section__kicker{display:inline-block;font-weight:700;text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;color:var(--amber-dark);margin-bottom:.7rem}
.section__title{font-family:var(--display);font-weight:800;font-size:clamp(1.7rem,3.5vw,2.6rem);line-height:1.15;color:var(--navy);margin-bottom:.8rem}
.section__sub{color:var(--muted);font-size:1.05rem}

/* ===== CARDS ===== */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:2rem 1.8rem;transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s;
}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.card__icon{width:56px;height:56px;display:grid;place-items:center;font-size:1.7rem;background:var(--bg-tint);border-radius:14px;margin-bottom:1.1rem}
.card h3{font-family:var(--display);font-size:1.2rem;color:var(--navy);margin-bottom:.5rem}
.card p{color:var(--muted);font-size:.96rem}

/* ===== PARALLAX BANNER ===== */
.banner{position:relative;color:var(--white);overflow:hidden;text-align:center;background:var(--navy)}
.banner__bg{position:absolute;inset:-35% 0;background:linear-gradient(120deg,#0c2540aa,#15436baa),url('img/banner.webp') center/cover no-repeat;will-change:transform}
.banner__overlay{position:absolute;inset:0;background:rgba(9,28,48,.55)}
.banner__content{position:relative;z-index:2;max-width:760px;margin-inline:auto;padding-block:clamp(4rem,9vw,7rem)}
.banner__content h2{font-family:var(--display);font-weight:800;font-size:clamp(1.6rem,3.4vw,2.4rem);margin-bottom:1rem}
.banner__content p{color:rgba(255,255,255,.9);font-size:1.08rem;margin-bottom:2rem}

/* ===== GALLERY ===== */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem}
.gallery__item{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);aspect-ratio:4/3}
.gallery__item img{width:100%;height:100%;object-fit:cover;transition:transform .6s var(--ease)}
.gallery__item:hover img{transform:scale(1.08)}
.gallery__item figcaption{position:absolute;inset:auto 0 0 0;padding:1.4rem 1.2rem .9rem;color:var(--white);
  background:linear-gradient(0deg,rgba(9,28,48,.85),transparent);}
.gallery__item figcaption span{display:block;font-family:var(--display);font-weight:700;font-size:1.05rem}
.gallery__item figcaption small{opacity:.85;font-size:.82rem}

/* ===== STEPS ===== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:1.4rem;counter-reset:step}
.step{position:relative;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:2rem 1.6rem}
.step__num{font-family:var(--display);font-weight:800;font-size:2rem;color:var(--amber);display:block;margin-bottom:.6rem}
.step h3{font-family:var(--display);color:var(--navy);font-size:1.15rem;margin-bottom:.4rem}
.step p{color:var(--muted);font-size:.94rem}

/* ===== FAQ ===== */
.faq{display:flex;flex-direction:column;gap:.9rem}
.faq__item{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-sm);overflow:hidden;transition:box-shadow .3s,border-color .3s}
.faq__item[open]{box-shadow:var(--shadow);border-color:transparent}
.faq__item summary{list-style:none;cursor:pointer;padding:1.15rem 1.4rem;font-weight:700;color:var(--navy);
  display:flex;align-items:center;justify-content:space-between;gap:1rem;font-size:1.02rem}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary::after{content:"+";font-size:1.5rem;color:var(--amber-dark);transition:transform .3s var(--ease);line-height:1}
.faq__item[open] summary::after{transform:rotate(45deg)}
.faq__body{padding:0 1.4rem 1.2rem;color:var(--muted)}

/* ===== CONTACT ===== */
.contact__grid{display:grid;grid-template-columns:1fr 1.1fr;gap:2.6rem;align-items:start}
.contact__info .section__head{text-align:left;margin:0 0 1.4rem}
.contact__lead{color:var(--muted);margin-bottom:1.6rem}
.contact__list{display:flex;flex-direction:column;gap:1rem;margin-bottom:1.6rem}
.contact__list li{display:flex;gap:.9rem;align-items:center}
.contact__ico{width:44px;height:44px;flex:none;display:grid;place-items:center;background:var(--bg-tint);border-radius:12px;font-size:1.2rem}
.contact__list small{display:block;color:var(--muted);font-size:.8rem}
.contact__list a,.contact__list span{font-weight:600;color:var(--navy)}
.contact__map{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);height:220px}
.contact__map iframe{width:100%;height:100%;border:0}

/* ===== FORM ===== */
.quote{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(1.4rem,3vw,2.2rem);box-shadow:var(--shadow)}
.quote__row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.field{margin-bottom:1rem;display:flex;flex-direction:column}
.field label{font-weight:600;font-size:.9rem;color:var(--navy);margin-bottom:.4rem}
.field input,.field select,.field textarea{
  font-family:var(--font);font-size:.98rem;color:var(--ink);
  padding:.8rem .95rem;border:1.5px solid var(--line);border-radius:var(--radius-sm);
  background:var(--bg);transition:border-color .2s,box-shadow .2s;width:100%;
}
.field textarea{resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:0;border-color:var(--amber);box-shadow:0 0 0 3px rgba(245,166,35,.18)}
.field input.invalid,.field select.invalid,.field textarea.invalid{border-color:#e05a5a;box-shadow:0 0 0 3px rgba(224,90,90,.12)}
.field__error{color:#e05a5a;font-size:.8rem;margin-top:.3rem;min-height:1em}
.check{display:flex;gap:.6rem;align-items:flex-start;font-size:.88rem;color:var(--muted);margin-bottom:.4rem;cursor:pointer}
.check input{margin-top:.2rem;accent-color:var(--amber)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}
.quote__note{font-size:.8rem;color:var(--muted);margin-top:.8rem;text-align:center}
.quote__feedback{margin-top:1rem;padding:0;border-radius:var(--radius-sm);font-weight:600;font-size:.95rem;text-align:center}
.quote__feedback.ok{padding:.9rem;background:#e7f6ec;color:#1c7a43}
.quote__feedback.err{padding:.9rem;background:#fdeaea;color:#c0392b}

/* ===== FOOTER ===== */
.footer{background:var(--navy);color:rgba(255,255,255,.82);padding-top:3.4rem}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:2rem;padding-bottom:2.4rem}
.brand--footer{color:var(--white);margin-bottom:1rem}
.footer__desc{font-size:.94rem;max-width:320px}
.footer h4{color:var(--white);font-family:var(--display);font-size:1.05rem;margin-bottom:1rem}
.footer__list{display:flex;flex-direction:column;gap:.6rem;font-size:.94rem}
.footer__list a:hover{color:var(--amber)}
.footer__bottom{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;padding-block:1.4rem;border-top:1px solid rgba(255,255,255,.12);font-size:.85rem}

/* ===== TO TOP ===== */
.totop{position:fixed;right:20px;bottom:20px;z-index:40;width:46px;height:46px;border-radius:50%;
  background:var(--amber);color:var(--navy);display:grid;place-items:center;font-size:1.2rem;font-weight:800;
  box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translateY(12px);transition:.3s var(--ease)}
.totop.show{opacity:1;visibility:visible;transform:translateY(0)}
.totop:hover{background:var(--amber-dark)}

/* ===== REVEAL ANIM ===== */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.in{opacity:1;transform:none}
.gallery__item.reveal{transition-delay:calc(var(--i,0) * .07s)}

/* ===== RESPONSIVE ===== */
@media (max-width:960px){
  .cards,.steps{grid-template-columns:repeat(2,1fr)}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .contact__grid{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  .nav,.header__actions{display:none}
  .burger{display:flex}
  .nav.open{
    display:flex;flex-direction:column;gap:1.2rem;
    position:fixed;inset:64px 0 auto 0;background:var(--white);
    padding:1.6rem clamp(18px,4vw,40px);box-shadow:var(--shadow);
  }
  .nav.open a{color:var(--ink);font-size:1.1rem}
  .trust__grid{grid-template-columns:repeat(2,1fr);gap:1.6rem}
  .quote__row{grid-template-columns:1fr}
  .hero__content{padding-block:6rem 4rem}
}
@media (max-width:520px){
  .cards,.steps,.gallery,.footer__grid{grid-template-columns:1fr}
}

/* ===== REDUCED MOTION ===== */
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none;transition:none}
  .parallax{transform:none!important}
}

/* =====================================================================
   VERSION CINÉMATOGRAPHIQUE (maquette) — ajouts au design d'origine
   ===================================================================== */

/* ---------- Écran de chargement ---------- */
#loader{position:fixed;inset:0;z-index:100;background:var(--navy);display:grid;place-items:center;color:var(--white);transition:transform .9s cubic-bezier(.7,0,.2,1)}
#loader.done{transform:translateY(-100%)}
#loader .brand{font-size:1.9rem;justify-content:center}
#loader .loader__house{width:74px;height:60px;margin:0 auto 1.4rem;position:relative}
#loader .loader__house svg{width:100%;height:100%;overflow:visible}
#loader .loader__house path{fill:none;stroke:var(--amber);stroke-width:3;stroke-linecap:round;stroke-linejoin:round;stroke-dasharray:240;stroke-dashoffset:240;animation:trace 1.6s var(--ease) forwards}
#loader .loader__heat{position:absolute;left:50%;top:-10px;width:8px;height:14px;margin-left:-4px;border-radius:50%;background:var(--amber);filter:blur(3px);animation:heat 1.8s ease-in-out infinite}
@keyframes trace{to{stroke-dashoffset:0}}
@keyframes heat{0%{opacity:0;transform:translateY(8px) scale(.6)}40%{opacity:.9}100%{opacity:0;transform:translateY(-18px) scale(1.2)}}
#loader .loader__pct{margin-top:1.4rem;font-weight:700;font-size:.85rem;letter-spacing:.12em;color:rgba(255,255,255,.7);text-align:center}
#loader .loader__bar{width:180px;height:3px;border-radius:3px;background:rgba(255,255,255,.12);margin:.6rem auto 0;overflow:hidden}
#loader .loader__bar i{display:block;height:100%;width:0;background:var(--amber);transition:width .3s}
html.loading body{overflow:hidden}

/* ---------- Film d'accueil piloté par le scroll ---------- */
.film{position:relative;height:700vh;background:var(--navy)}
.film__sticky{position:sticky;top:0;height:100vh;height:100svh;overflow:hidden;color:var(--white)}
.film__sticky canvas{position:absolute;inset:0;width:100%;height:100%}
.film__overlay{position:absolute;inset:0;pointer-events:none;background:linear-gradient(90deg,rgba(9,28,48,.82) 0%,rgba(9,28,48,.45) 50%,rgba(9,28,48,.12) 100%),linear-gradient(0deg,rgba(9,28,48,.55),transparent 35%)}
.scene{position:absolute;inset:0;z-index:2;display:flex;align-items:center;opacity:0;pointer-events:none;will-change:opacity,transform}
.scene.on{pointer-events:auto}
.scene .container{width:100%}
.scene__box{max-width:640px}
.scene .hero__title{font-size:clamp(2.1rem,5vw,3.8rem)}
.scene__num{display:inline-flex;align-items:center;gap:.6rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;font-size:.8rem;color:var(--amber);margin-bottom:1rem}
.scene__num b{display:grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--amber);color:var(--navy);font-size:.78rem;letter-spacing:0}
.scene h2{font-family:var(--display);font-weight:800;font-size:clamp(1.9rem,4.4vw,3.3rem);line-height:1.1;margin-bottom:1rem}
.scene h2 em{font-style:normal;color:var(--amber)}
.scene p{font-size:clamp(1rem,1.3vw,1.15rem);color:rgba(255,255,255,.9);max-width:520px}
.scene .chips{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1.4rem}
.scene .chips span{font-weight:700;font-size:.82rem;padding:.4rem .85rem;border-radius:999px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);backdrop-filter:blur(6px)}
.scene .hero__cta{margin-top:1.8rem;margin-bottom:0}
.thermo{position:absolute;right:clamp(18px,4vw,40px);top:50%;transform:translateY(-50%);z-index:2;display:flex;flex-direction:column;align-items:center;gap:.5rem;opacity:0;font-weight:700;font-size:.72rem;letter-spacing:.1em;color:rgba(255,255,255,.8)}
.thermo i{width:10px;height:180px;border-radius:6px;background:linear-gradient(0deg,#2b3cff,#9b3cff,#ff3c6e,#ff9a1f,#ffe14d);box-shadow:0 0 18px rgba(255,154,31,.4)}
.film__progress{position:absolute;left:0;bottom:0;height:3px;width:0;background:var(--amber);z-index:3}
.film__chapters{position:absolute;left:50%;bottom:22px;transform:translateX(-50%);z-index:3;display:flex;gap:.5rem}
.film__chapters button{width:34px;height:4px;border:0;border-radius:4px;background:rgba(255,255,255,.28);cursor:pointer;transition:background .3s,width .3s}
.film__chapters button.on{background:var(--amber);width:54px}
.film .hero__scroll{bottom:46px}

/* ---------- Chantiers : défilement horizontal cinématographique ---------- */
.reel{position:relative;background:var(--bg-tint)}
.reel__pin{position:sticky;top:0;height:100vh;height:100svh;display:flex;flex-direction:column;justify-content:center;overflow:hidden}
.reel .section__head{margin-bottom:2rem}
.reel__track{display:flex;gap:1.4rem;padding-inline:max(clamp(18px,4vw,40px),calc((100vw - var(--maxw))/2 + 40px));will-change:transform}
.reel .gallery__item{flex:none;width:min(560px,72vw);aspect-ratio:4/3;cursor:zoom-in;opacity:1;transform:none}
.reel .gallery__item img{transform:scale(1.18);transition:transform 1.2s var(--ease)}
.reel .gallery__item.vu img{animation:kenburns 14s ease-in-out infinite alternate}
.reel .gallery__item:hover img{animation-play-state:paused;transform:scale(1.12)}
@keyframes kenburns{from{transform:scale(1.18) translate(2%,1%)}to{transform:scale(1.04) translate(-2%,-1%)}}
.reel .gallery__item figcaption{padding:2.2rem 1.4rem 1.2rem}
.reel .gallery__item figcaption span{font-size:1.25rem}
.reel .gallery__item .num{position:absolute;top:1rem;left:1rem;z-index:2;font-family:var(--display);font-weight:800;font-size:.8rem;color:var(--navy);background:var(--amber);border-radius:999px;padding:.25rem .7rem}
.reel__bar{width:min(var(--maxw),calc(100% - 2*clamp(18px,4vw,40px)));height:3px;margin:2rem auto 0;background:var(--line);border-radius:3px;overflow:hidden}
.reel__bar i{display:block;height:100%;width:0;background:var(--amber)}
.reel__hint{text-align:center;font-weight:700;font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-top:.9rem}

/* visionneuse */
.lightbox{position:fixed;inset:0;z-index:90;background:rgba(9,28,48,.92);display:grid;place-items:center;padding:4vw;opacity:0;visibility:hidden;transition:.35s var(--ease);cursor:zoom-out}
.lightbox.open{opacity:1;visibility:visible}
.lightbox figure{max-width:1200px;width:100%}
.lightbox img{width:100%;max-height:78vh;object-fit:contain;border-radius:var(--radius);box-shadow:var(--shadow-lg)}
.lightbox figcaption{color:var(--white);margin-top:1rem;text-align:center}
.lightbox figcaption span{display:block;font-family:var(--display);font-weight:800;font-size:1.3rem}
.lightbox figcaption small{color:rgba(255,255,255,.75)}

.maquette-note{background:var(--amber);color:var(--navy);text-align:center;font-weight:700;font-size:.82rem;padding:.5rem 1rem}

@media (max-width:720px){
  .film__overlay{background:linear-gradient(0deg,rgba(9,28,48,.9) 0%,rgba(9,28,48,.45) 60%,rgba(9,28,48,.3) 100%)}
  .scene{align-items:flex-end;padding-bottom:5.5rem}
  .thermo{display:none}
  .scene .hero__badges{display:none}
  .reel__pin{position:relative;height:auto;padding-block:clamp(4rem,8vw,7rem)}
  .reel{height:auto!important}
  .reel__track{transform:none!important;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:1rem;-webkit-overflow-scrolling:touch}
  .reel .gallery__item{scroll-snap-align:center;width:84vw}
  .reel__bar{display:none}
}
@media (prefers-reduced-motion:reduce){
  .reel .gallery__item img{animation:none!important}
}

/* ---------- Méthode : cartes qui s'empilent au scroll ---------- */
.stack{background:var(--bg);padding-block:clamp(4rem,8vw,7rem) 0}
.stack .section__head{margin-bottom:2.4rem}
.stack__cards{max-width:var(--maxw);margin-inline:auto;padding-inline:clamp(18px,4vw,40px);padding-bottom:12vh}
.stack__card{position:sticky;top:calc(96px + var(--k) * 22px);display:grid;grid-template-columns:1.15fr 1fr;gap:0;
  height:min(560px,calc(100vh - 150px));margin-bottom:28vh;background:var(--white);border:1px solid var(--line);border-radius:22px;
  overflow:hidden;box-shadow:var(--shadow-lg);transform-origin:50% 0;will-change:transform,filter}
.stack__card:last-child{margin-bottom:0}
.stack__media{position:relative;overflow:hidden;background:var(--navy)}
.stack__media video,.stack__media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.stack__media::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent 60%,rgba(255,255,255,.08)),linear-gradient(0deg,rgba(9,28,48,.45),transparent 40%)}
.stack__big{position:absolute;left:1.4rem;bottom:.6rem;z-index:2;font-family:var(--display);font-weight:800;font-size:clamp(4rem,9vw,7.5rem);line-height:1;color:var(--amber);text-shadow:0 6px 30px rgba(9,28,48,.5)}
.stack__txt{padding:clamp(1.8rem,4vw,3.4rem);display:flex;flex-direction:column;justify-content:center}
.stack__txt .section__kicker{margin-bottom:.4rem}
.stack__txt h3{font-family:var(--display);font-weight:800;color:var(--navy);font-size:clamp(1.6rem,3vw,2.4rem);line-height:1.15;margin-bottom:.8rem}
.stack__txt p{color:var(--muted);font-size:1.05rem;margin-bottom:1.4rem}
.stack__txt ul{display:grid;gap:.6rem}
.stack__txt li{position:relative;padding-left:1.8rem;font-weight:600;color:var(--ink)}
.stack__txt li::before{content:"✓";position:absolute;left:0;top:0;width:1.25rem;height:1.25rem;border-radius:50%;background:rgba(245,166,35,.16);color:var(--amber-dark);font-size:.75rem;font-weight:800;display:grid;place-items:center;margin-top:.2rem}
.stack__steps{display:flex;gap:.4rem;margin-top:1.8rem}
.stack__steps i{flex:1;height:4px;border-radius:4px;background:var(--line)}
.stack__steps i.on{background:var(--amber)}
@media (max-width:860px){
  .stack__card{grid-template-columns:1fr;grid-template-rows:42% 1fr;height:min(640px,calc(100svh - 110px));top:calc(76px + var(--k) * 14px);margin-bottom:22vh}
  .stack__txt{padding:1.4rem 1.4rem 1.6rem;justify-content:flex-start}
  .stack__txt p{font-size:.98rem;margin-bottom:1rem}
  .stack__big{font-size:3.6rem}
}
/* mouvement de caméra lent sur l'image (et la vidéo) de chaque étape */
.stack__media video{animation:stackcam 16s ease-in-out infinite alternate}
@keyframes stackcam{from{transform:scale(1.04) translate(0,0)}to{transform:scale(1.16) translate(-2.5%,-1.5%)}}
@media (prefers-reduced-motion:reduce){.stack__media video{animation:none}}

/* ---------- Expertises : la maison en coupe, un point s'allume par expertise ---------- */
.coupe{position:relative;background:#0b2238;color:var(--white)}
.coupe__intro{padding-top:clamp(4rem,8vw,7rem)}
.coupe__intro .section__title{color:var(--white)}
.coupe__intro .section__sub{color:rgba(255,255,255,.72)}
.coupe__piste{position:relative}
.coupe__pin{position:sticky;top:0;height:100vh;height:100svh;display:grid;grid-template-columns:1.45fr 1fr;align-items:center;gap:clamp(1rem,3vw,3rem);
  max-width:1320px;margin-inline:auto;padding:84px clamp(18px,4vw,40px) 30px}
.coupe__scene{position:relative;aspect-ratio:3/2;border-radius:22px;overflow:hidden;box-shadow:0 30px 80px rgba(0,0,0,.45)}
.coupe__zoom{position:absolute;inset:0;transition:transform 1.4s var(--ease),transform-origin 1.4s var(--ease);will-change:transform}
.coupe__zoom img{width:100%;height:100%;object-fit:cover}
.coupe__point{position:absolute;width:34px;height:34px;margin:-17px 0 0 -17px;border:0;border-radius:50%;cursor:pointer;
  background:rgba(245,166,35,.25);display:grid;place-items:center;transition:transform .5s var(--ease),background .5s}
.coupe__point::before{content:"";width:12px;height:12px;border-radius:50%;background:var(--amber);box-shadow:0 0 16px var(--amber)}
.coupe__point::after{content:"";position:absolute;inset:-8px;border-radius:50%;border:2px solid var(--amber);opacity:0}
.coupe__point.on{background:rgba(245,166,35,.45);transform:scale(1.25)}
.coupe__point.on::after{animation:onde 1.8s ease-out infinite}
.coupe__point.vu:not(.on)::before{background:#ffd27a}
@keyframes onde{0%{opacity:.9;transform:scale(.6)}100%{opacity:0;transform:scale(1.9)}}
.coupe__point span{position:absolute;left:50%;bottom:calc(100% + 10px);transform:translateX(-50%) translateY(6px);white-space:nowrap;
  font-family:var(--display);font-weight:700;font-size:.78rem;color:var(--navy);background:var(--amber);padding:.3rem .65rem;border-radius:999px;
  opacity:0;transition:.4s var(--ease);pointer-events:none;box-shadow:0 6px 18px rgba(0,0,0,.3)}
.coupe__point.on span,.coupe__point:hover span{opacity:1;transform:translateX(-50%)}
.coupe__panneau{position:relative;min-height:360px}
.coupe__fiche{position:absolute;inset:0 0 auto 0;opacity:0;transform:translateY(24px);transition:opacity .6s var(--ease),transform .6s var(--ease);pointer-events:none}
.coupe__fiche.on{opacity:1;transform:none;pointer-events:auto}
.coupe__fiche .card__icon{background:rgba(245,166,35,.14);font-size:1.6rem}
.coupe__num{font-family:var(--display);font-weight:800;font-size:.85rem;letter-spacing:.12em;color:var(--amber);margin-bottom:.6rem}
.coupe__fiche h3{font-family:var(--display);font-weight:800;font-size:clamp(1.7rem,3vw,2.5rem);line-height:1.12;margin-bottom:.9rem}
.coupe__fiche p{color:rgba(255,255,255,.82);font-size:1.08rem;margin-bottom:1.4rem}
.coupe__fiche ul{display:grid;gap:.55rem;margin-bottom:1.6rem}
.coupe__fiche li{position:relative;padding-left:1.6rem;font-weight:600;color:rgba(255,255,255,.92)}
.coupe__fiche li::before{content:"";position:absolute;left:0;top:.55em;width:10px;height:10px;border-radius:50%;background:var(--amber);box-shadow:0 0 10px var(--amber)}
.coupe__nav{display:flex;gap:.45rem;margin-top:.4rem;position:absolute;left:0;bottom:-3.2rem}
.coupe__nav button{width:30px;height:4px;border:0;border-radius:4px;background:rgba(255,255,255,.22);cursor:pointer;transition:.3s}
.coupe__nav button.on{background:var(--amber);width:48px}
@media (max-width:900px){
  .coupe__pin{grid-template-columns:1fr;align-content:start;padding-top:76px;gap:1.2rem}
  .coupe__panneau{min-height:300px}
  .coupe__fiche ul{display:none}
  .coupe__point span{display:none}
  .coupe__nav{position:static;margin-top:1rem}
}
/* les fiches se superposent dans la même case de grille : le panneau prend la hauteur de la plus grande, la navigation reste dessous */
.coupe__panneau{display:grid;min-height:0}
.coupe__fiche{grid-area:1/1;position:relative;inset:auto}
.coupe__nav{position:static;margin-top:1.6rem}
.coupe__point.gauche span{left:-6px;transform:translateY(6px)}
.coupe__point.gauche.on span,.coupe__point.gauche:hover span{transform:none}
.coupe__point.droite span{left:auto;right:-6px;transform:translateY(6px)}
.coupe__point.droite.on span,.coupe__point.droite:hover span{transform:none}

/* ---------- Expertises v2 : image fixe + liste de services qui s'ouvrent au survol ---------- */
.coupe{padding-bottom:clamp(4rem,8vw,7rem)}
.coupe__pin{position:relative;top:auto;height:auto;padding:0 clamp(18px,4vw,40px);grid-template-columns:1.35fr 1fr;align-items:center}
.coupe__scene img{width:100%;height:100%;object-fit:cover}
.coupe__panneau{display:flex;flex-direction:column;gap:.55rem;min-height:0}
.coupe__fiche{grid-area:auto;position:relative;inset:auto;opacity:1;transform:none;pointer-events:auto;cursor:pointer;outline:0;
  background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);border-radius:14px;padding:.85rem 1.1rem;
  transition:background .35s var(--ease),border-color .35s var(--ease),transform .35s var(--ease)}
.coupe__fiche:hover,.coupe__fiche:focus-visible{border-color:rgba(245,166,35,.45)}
.coupe__fiche.on{background:rgba(245,166,35,.09);border-color:var(--amber);transform:translateX(-4px)}
.coupe__tete{display:flex;align-items:center;gap:.9rem}
.coupe__ico{width:40px;height:40px;flex:none;display:grid;place-items:center;border-radius:11px;background:rgba(255,255,255,.07);font-size:1.25rem;transition:background .35s}
.coupe__fiche.on .coupe__ico{background:var(--amber)}
.coupe__fiche h3,.coupe__titre{flex:1;margin:0;font-family:var(--display);font-weight:700;font-size:1.08rem;line-height:1.25;color:var(--white)}
.coupe__fiche .coupe__num{margin:0;font-size:.78rem;color:rgba(255,255,255,.4)}
.coupe__fiche.on .coupe__num{color:var(--amber)}
.coupe__corps{display:grid;grid-template-rows:0fr;transition:grid-template-rows .45s var(--ease)}
.coupe__corps > div{overflow:hidden;padding-left:calc(40px + .9rem)}
.coupe__fiche.on .coupe__corps{grid-template-rows:1fr}
.coupe__fiche p{font-size:.95rem;color:rgba(255,255,255,.78);margin:.7rem 0 .7rem}
.coupe__fiche ul{display:grid;gap:.35rem;margin:0 0 .4rem}
.coupe__fiche li{font-size:.9rem;padding-left:1.3rem}
.coupe__fiche li::before{width:8px;height:8px;top:.5em}
.coupe__fiche .btn{margin:.6rem 0 .3rem}
.coupe__point{transform:none}
.coupe__point.on{transform:scale(1.2)}
@media (max-width:900px){
  .coupe__pin{grid-template-columns:1fr;padding-top:0}
  .coupe__fiche ul{display:grid}
  .coupe__corps > div{padding-left:0}
}
/* v3 : la liste ne bouge plus, le détail s'affiche dans un cadre fixe en dessous */
.coupe__fiche{display:block;width:100%;text-align:left;font:inherit;color:inherit;padding:.75rem 1rem}
.coupe__detail{display:grid;margin-top:.5rem;padding:1.1rem 1.2rem;border-radius:14px;background:rgba(245,166,35,.07);border:1px solid rgba(245,166,35,.35);min-height:170px}
.coupe__info{grid-area:1/1;opacity:0;transform:translateY(8px);transition:opacity .35s var(--ease),transform .35s var(--ease);pointer-events:none}
.coupe__info.on{opacity:1;transform:none;pointer-events:auto}
.coupe__info p{font-size:.98rem;color:rgba(255,255,255,.85);margin:0 0 .8rem}
.coupe__info ul{display:grid;gap:.35rem}
.coupe__info li{position:relative;padding-left:1.3rem;font-weight:600;font-size:.92rem;color:rgba(255,255,255,.92)}
.coupe__info li::before{content:"";position:absolute;left:0;top:.5em;width:8px;height:8px;border-radius:50%;background:var(--amber);box-shadow:0 0 10px var(--amber)}
.coupe__info .btn{margin-top:.9rem}
.footer .signature{color:var(--amber);font-weight:700;border-bottom:1px solid rgba(245,166,35,.4)}
.footer .signature:hover{color:var(--white);border-color:var(--white)}