:root{
  --orange:#e58a18;
  --orange-dark:#b96808;
  --charcoal:#202224;
  --steel:#6f7377;
  --light:#f5f5f3;
  --white:#ffffff;
  --border:#e4e4e1;
  --shadow:0 14px 40px rgba(0,0,0,.10);
  --radius:18px;
  --max:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Inter,Segoe UI,Arial,sans-serif;color:var(--charcoal);background:#fff;line-height:1.65}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{width:min(92%,var(--max));margin:auto}
.topbar{background:var(--charcoal);color:#fff;font-size:.86rem}
.topbar .container{display:flex;justify-content:space-between;gap:20px;padding:8px 0}
.navbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.nav-inner{height:82px;display:flex;align-items:center;justify-content:space-between;gap:25px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800}
.brand img{width:120px;height:80px;object-fit:cover;border-radius:8px}
.brand span{font-size:.98rem;line-height:1.15}
.brand small{display:block;color:var(--steel);font-size:.68rem;font-weight:600;letter-spacing:.08em}
.nav-links{display:flex;align-items:center;gap:24px;font-weight:650;font-size:.93rem}
.nav-links a{padding:10px 0;position:relative}
.nav-links a:after{content:"";position:absolute;left:0;bottom:3px;width:0;height:2px;background:var(--orange);transition:.25s}
.nav-links a:hover:after,.nav-links a.active:after{width:100%}
.menu-btn{display:none;border:0;background:var(--charcoal);color:#fff;border-radius:10px;padding:10px 13px;font-size:1.1rem}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border:0;border-radius:10px;padding:13px 19px;font-weight:750;cursor:pointer;transition:.2s}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-dark);transform:translateY(-1px)}
.btn-dark{background:var(--charcoal);color:#fff}
.btn-light{background:#fff;color:var(--charcoal)}
.hero{position:relative;min-height:620px;overflow:hidden;background:#111}
.slide{position:absolute;inset:0;opacity:0;transition:opacity .7s ease;background-size:cover;background-position:center}
.slide.active{opacity:1}
.slide:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.78),rgba(0,0,0,.35),rgba(0,0,0,.15))}
.hero-content{position:relative;z-index:2;color:#fff;min-height:620px;display:flex;align-items:center}
.hero-copy{max-width:720px;padding:80px 0}
.eyebrow{display:inline-block;color:var(--orange);font-weight:800;text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;margin-bottom:15px}
.hero h1{font-size:clamp(2.4rem,5vw,4.7rem);line-height:1.05;margin-bottom:22px}
.hero p{font-size:1.08rem;max-width:650px;color:#e9e9e9;margin-bottom:30px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.carousel-controls{position:absolute;z-index:5;right:4%;bottom:28px;display:flex;gap:8px}
.carousel-controls button{width:44px;height:44px;border:1px solid rgba(255,255,255,.35);border-radius:50%;background:rgba(0,0,0,.3);color:#fff;cursor:pointer}
.dots{position:absolute;z-index:5;left:50%;transform:translateX(-50%);bottom:36px;display:flex;gap:7px}
.dot{width:9px;height:9px;border-radius:50%;border:0;background:rgba(255,255,255,.45);cursor:pointer}
.dot.active{background:var(--orange)}
.section{padding:85px 0}
.section.alt{background:var(--light)}
.section-head{max-width:760px;margin-bottom:42px}
.section-head.center{text-align:center;margin-left:auto;margin-right:auto}
.section h2{font-size:clamp(1.9rem,3vw,3rem);line-height:1.15;margin-bottom:14px}
.section-lead{color:#666;max-width:720px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px;box-shadow:0 7px 22px rgba(0,0,0,.04)}
.card h3{margin:10px 0 9px;font-size:1.15rem}
.card p{color:#666;font-size:.94rem}
.icon{width:48px;height:48px;border-radius:13px;background:rgba(229,138,24,.13);display:grid;place-items:center;color:var(--orange-dark);font-size:1.3rem;font-weight:900}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#dcdcdc;border-radius:18px;overflow:hidden;margin-top:25px}
.stat{background:#fff;padding:25px;text-align:center}
.stat strong{font-size:2rem;display:block}
.stat span{color:#777;font-size:.88rem}
.image-card{overflow:hidden;border-radius:var(--radius);background:#fff;border:1px solid var(--border)}
.image-card img{width:100%;height:245px;object-fit:cover}
.image-card .body{padding:21px}
.badge{display:inline-block;padding:6px 10px;border-radius:999px;background:rgba(229,138,24,.13);color:var(--orange-dark);font-size:.75rem;font-weight:800;margin-bottom:8px}
.page-hero{padding:95px 0;background:linear-gradient(115deg,#202224,#3a3d40);color:#fff}
.page-hero h1{font-size:clamp(2.2rem,4vw,3.7rem);line-height:1.1;margin-bottom:14px}
.page-hero p{color:#ddd;max-width:720px}
.breadcrumb{color:#bbb;font-size:.85rem;margin-bottom:18px}
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:55px;align-items:center}
.checklist{list-style:none;display:grid;gap:13px;margin:24px 0}
.checklist li{display:flex;gap:12px;align-items:flex-start}
.checklist li:before{content:"✓";flex:0 0 25px;height:25px;border-radius:50%;display:grid;place-items:center;background:var(--orange);color:#fff;font-weight:900;font-size:.8rem}
.timeline{position:relative;display:grid;gap:25px}
.timeline:before{content:"";position:absolute;left:17px;top:5px;bottom:5px;width:2px;background:#ddd}
.timeline-item{position:relative;padding-left:55px}
.timeline-dot{position:absolute;left:7px;top:4px;width:22px;height:22px;border-radius:50%;background:var(--orange);border:5px solid #fff;box-shadow:0 0 0 1px #ddd}
.timeline-item h3{margin-bottom:5px}
.timeline-item p{color:#666}
.project-img{height:300px;width:100%;object-fit:cover}
.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:30px}
.contact-list{display:grid;gap:18px}
.contact-item{display:flex;gap:15px;padding:18px;background:var(--light);border-radius:14px}
.contact-item .icon{flex:0 0 45px}
form{display:grid;gap:15px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:15px}
label{font-size:.88rem;font-weight:700}
input,textarea,select{width:100%;margin-top:7px;padding:13px 14px;border:1px solid #d8d8d5;border-radius:10px;font:inherit;outline:none}
input:focus,textarea:focus,select:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(229,138,24,.12)}
textarea{min-height:145px;resize:vertical}
.cta{background:linear-gradient(120deg,var(--orange),#c66d08);color:#fff;border-radius:24px;padding:48px}
.cta p{color:#fff;margin:10px 0 22px;opacity:.9}
.footer{background:#17191a;color:#ddd;padding:55px 0 20px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:35px}
.footer h3{color:#fff;margin-bottom:15px}
.footer p,.footer a{color:#aaa;font-size:.9rem}
.footer-links{display:grid;gap:8px}
.footer-bottom{border-top:1px solid #333;margin-top:35px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;font-size:.82rem;color:#888}
.reveal{opacity:0;transform:translateY(18px);transition:.6s}
.reveal.show{opacity:1;transform:none}
.notice{padding:13px 15px;border-left:4px solid var(--orange);background:#fff7eb;border-radius:8px;color:#67420f}
@media(max-width:980px){
  .nav-links{gap:13px;font-size:.85rem}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .split,.contact-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:760px){
  .topbar .container{display:none}
  .nav-inner{height:70px}
  .menu-btn{display:block}
  .nav-links{display:none;position:absolute;left:0;right:0;top:70px;background:#fff;padding:18px 4%;border-bottom:1px solid var(--border);flex-direction:column;align-items:flex-start}
  .nav-links.open{display:flex}
  .brand img{width:54px;height:42px}
  .hero,.hero-content{min-height:590px}
  .section{padding:62px 0}
  .grid-4,.grid-3,.grid-2,.form-row,.stats{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
  .carousel-controls{right:5%;bottom:22px}
  .dots{bottom:37px}
}

/* Galerie photos */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.gallery-item{position:relative;overflow:hidden;border-radius:16px;background:#ddd;min-height:240px;cursor:pointer}
.gallery-item img{width:100%;height:100%;min-height:240px;object-fit:cover;transition:transform .45s ease}
.gallery-item:after{content:"Voir la photo";position:absolute;inset:auto 12px 12px auto;padding:7px 11px;border-radius:999px;background:rgba(0,0,0,.65);color:#fff;font-size:.75rem;font-weight:700;opacity:0;transition:.25s}
.gallery-item:hover img{transform:scale(1.06)}
.gallery-item:hover:after{opacity:1}
.gallery-item.large{grid-column:span 2}
.gallery-caption{padding:12px 2px 0;color:#666;font-size:.88rem}
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.88);z-index:100;display:none;align-items:center;justify-content:center;padding:30px}
.lightbox.open{display:flex}
.lightbox img{max-width:min(1100px,92vw);max-height:85vh;object-fit:contain;border-radius:10px}
.lightbox-close{position:absolute;right:25px;top:18px;background:#fff;color:#222;border:0;border-radius:50%;width:45px;height:45px;font-size:1.5rem;cursor:pointer}
.lightbox-prev,.lightbox-next{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;border:1px solid rgba(255,255,255,.35);border-radius:50%;background:rgba(0,0,0,.45);color:#fff;font-size:1.4rem;cursor:pointer}
.lightbox-prev{left:20px}.lightbox-next{right:20px}
@media(max-width:760px){.gallery{grid-template-columns:1fr 1fr}.gallery-item.large{grid-column:span 2}.gallery-item,.gallery-item img{min-height:190px}}