:root{
  --black:#111111;
  --white:#ffffff;
  --cream:#f5f1e8;
  --paper:#fcfbf8;
  --gold:#c4973b;
  --text:#222222;
  --muted:#6d6a64;
  --line:#e4dfd5;
  --max:1180px;
  --shadow:0 18px 50px rgba(0,0,0,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,Arial,Helvetica,sans-serif;color:var(--text);background:var(--white);line-height:1.6}
img{max-width:100%;display:block}
a{color:inherit}
.container{width:min(var(--max),calc(100% - 40px));margin:auto}
.header{position:sticky;top:0;z-index:100;background:rgba(17,17,17,.97);color:#fff;border-bottom:1px solid rgba(255,255,255,.08)}
.navbar{min-height:82px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.logo{width:86px;height:58px;object-fit:contain}
.nav-links{display:flex;align-items:center;gap:25px}
.nav-links a{text-decoration:none;font-size:14px;font-weight:600;opacity:.9}
.nav-links a:hover,.nav-links a.active{color:#e1b95c}
.nav-actions{display:flex;align-items:center;gap:10px}
.lang-btn{border:1px solid rgba(255,255,255,.35);background:transparent;color:#fff;padding:8px 11px;border-radius:3px;cursor:pointer;font-weight:700}
.menu-btn{display:none;background:none;border:0;color:#fff;font-size:28px;cursor:pointer}
.btn{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;border:1px solid var(--black);padding:14px 22px;font-weight:700;transition:.25s}
.btn-dark{background:var(--black);color:#fff}
.btn-dark:hover{background:var(--gold);border-color:var(--gold)}
.btn-light{background:#fff;color:var(--black)}
.btn-light:hover{background:var(--cream)}
.hero{min-height:720px;background:linear-gradient(90deg,rgba(0,0,0,.80),rgba(0,0,0,.38)),url('assets/hero-batiment.jpg') center/cover;display:flex;align-items:center;color:#fff}
.hero-inner{max-width:760px;padding:100px 0}
.kicker{font-size:12px;letter-spacing:3px;font-weight:800;color:#e1b95c;margin-bottom:16px}
.hero h1{font-size:clamp(42px,6vw,76px);line-height:1.02;margin:0 0 22px}
.hero p{font-size:19px;max-width:650px;color:#eee;margin:0 0 32px}
.hero-buttons{display:flex;gap:12px;flex-wrap:wrap}
.section{padding:100px 0}
.section.cream{background:var(--cream)}
.heading{max-width:780px;margin:0 auto 52px;text-align:center}
.heading .kicker{color:var(--gold);margin-bottom:10px}
.heading h2{font-size:clamp(32px,4.5vw,54px);line-height:1.08;margin:0 0 15px}
.heading p{margin:0;color:var(--muted)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:30px}
.card{border:1px solid var(--line);background:#fff}
.card-pad{padding:26px}
.service-icon{font-size:26px;color:var(--gold);margin-bottom:12px}
.card h3{font-size:21px;margin:0 0 9px}
.card p{color:var(--muted);margin:0}
.image-card{overflow:hidden;background:#fff;border:1px solid var(--line)}
.image-card img{width:100%;height:300px;object-fit:cover;transition:transform .5s}
.image-card:hover img{transform:scale(1.04)}
.image-card .card-pad{padding:22px}
.tag{display:inline-block;font-size:10px;letter-spacing:1.5px;font-weight:800;color:#8e6a20;margin-bottom:8px}
.split{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.split img{width:100%;height:560px;object-fit:cover}
.split h2{font-size:clamp(32px,4vw,52px);line-height:1.08;margin:0 0 18px}
.split p{color:var(--muted)}
.list{padding:0;margin:24px 0;list-style:none}
.list li{padding:9px 0 9px 25px;position:relative}
.list li:before{content:"✓";position:absolute;left:0;color:var(--gold);font-weight:800}
.cta{background:var(--black);color:#fff;padding:70px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:30px}
.cta h2{font-size:clamp(30px,4vw,48px);margin:0 0 8px}
.cta p{margin:0;color:#ccc}
.project-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.project img{width:100%;height:320px;object-fit:cover}
.project-body{padding:20px;border:1px solid var(--line);border-top:0}
.project-body h3{margin:0 0 6px}
.project-body p{margin:0;color:var(--muted)}
.page-hero{padding:120px 0;background:var(--black);color:#fff}
.page-hero h1{font-size:clamp(42px,6vw,70px);line-height:1;margin:0 0 15px}
.page-hero p{max-width:700px;color:#ddd;margin:0}
.faq{border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line);padding:20px 0}
.faq summary{cursor:pointer;font-weight:700}
.form{display:grid;gap:16px}
.form label{font-weight:700;font-size:14px}
.form input,.form textarea{width:100%;padding:14px;border:1px solid #d7d1c5;background:#fff;font:inherit}
.form textarea{min-height:160px;resize:vertical}
.contact-info{display:grid;gap:16px}
.contact-item{padding:18px;background:var(--cream);border:1px solid var(--line)}
.contact-item strong{display:block;margin-bottom:4px}
.footer{background:#111;color:#fff;padding:55px 0 25px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px}
.footer h3{margin:0 0 15px}
.footer p,.footer a{color:#cfcfcf}
.footer a{text-decoration:none}
.footer a:hover{color:#e1b95c}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:35px;padding-top:20px;color:#999;font-size:13px}
.notice{font-size:12px;color:#777;margin-top:15px}
@media(max-width:900px){
  .nav-links{position:absolute;left:0;right:0;top:82px;background:#111;display:none;flex-direction:column;align-items:flex-start;padding:22px 20px;border-top:1px solid #333}
  .nav-links.open{display:flex}
  .menu-btn{display:block}
  .grid-3,.project-grid{grid-template-columns:1fr 1fr}
  .split{grid-template-columns:1fr;gap:35px}
  .split img{height:420px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:620px){
  .container{width:min(var(--max),calc(100% - 28px))}
  .navbar{min-height:72px}
  .logo{width:76px;height:50px}
  .nav-links{top:72px}
  .hero{min-height:650px}
  .hero-inner{padding:75px 0}
  .hero p{font-size:17px}
  .grid-3,.grid-2,.project-grid{grid-template-columns:1fr}
  .section{padding:72px 0}
  .image-card img,.project img{height:260px}
  .split img{height:320px}
  .footer-grid{grid-template-columns:1fr}
  .hero-buttons .btn{width:100%}
}