:root{--navy:#061a33;--navy2:#0a2342;--orange:#f47b20;--white:#f7f9fc;--muted:#9fb0c5;--line:rgba(255,255,255,.10);--card:rgba(255,255,255,.045)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--navy);color:var(--white);font-family:"Open Sans",sans-serif;line-height:1.6}.container{width:min(1180px,92%);margin:auto}.site-header{position:sticky;top:0;z-index:20;background:rgba(6,26,51,.88);backdrop-filter:blur(14px);border-bottom:1px solid transparent}.site-header.scrolled{border-color:var(--line)}.header-inner{min-height:76px;display:flex;align-items:center;gap:28px}.brand img{width:158px;display:block}.nav{display:flex;gap:22px;margin-left:auto}.nav a{color:#dce6f2;text-decoration:none;font-size:14px}.nav a:hover,.nav .active{color:#fff}.header-actions{display:flex;gap:10px;align-items:center}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 20px;border-radius:8px;text-decoration:none;font-weight:700;font-size:14px;border:1px solid transparent;cursor:pointer}.btn-orange{background:var(--orange);color:#101a25}.btn-outline{border-color:rgba(255,255,255,.22);color:#fff;background:transparent}.wa{width:40px;height:40px;border:1px solid rgba(255,255,255,.18);border-radius:50%;display:grid;place-items:center;color:#fff;text-decoration:none;font-weight:800;font-size:11px}.menu{display:none;margin-left:auto;background:none;border:0;padding:6px}.menu span{display:block;width:24px;height:2px;background:#fff;margin:5px}.hero{position:relative;overflow:hidden;padding:92px 0 80px;background:radial-gradient(circle at 80% 20%,rgba(244,123,32,.12),transparent 30%),linear-gradient(135deg,#061a33,#091f3a)}.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:70px;align-items:center}.eyebrow{font-size:11px;letter-spacing:.16em;font-weight:800;color:var(--orange)}h1,h2,h3{font-family:Montserrat,sans-serif;line-height:1.1;margin:0 0 20px}h1{font-size:clamp(42px,5vw,70px)}h1 span,h2 span{color:var(--orange)}.hero p{font-size:18px;color:#c2cfde;max-width:650px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.hero-panel{min-height:390px;border:1px solid var(--line);border-radius:24px;background:linear-gradient(145deg,rgba(255,255,255,.07),rgba(255,255,255,.025));padding:38px;position:relative;overflow:hidden;display:flex;flex-direction:column;justify-content:center}.hero-panel:before{content:"";position:absolute;width:280px;height:280px;border:1px solid rgba(244,123,32,.25);border-radius:50%;right:-60px;top:-50px}.hero-panel:after{content:"";position:absolute;width:420px;height:420px;border:1px solid rgba(244,123,32,.10);border-radius:50%;right:-130px;top:-120px}.hero-panel strong{font-family:Montserrat;font-size:26px;position:relative;z-index:1}.hero-panel small{color:var(--muted);position:relative;z-index:1}.signal{display:flex;gap:8px;margin-bottom:35px;position:relative;z-index:1}.signal i{width:14px;height:14px;border-radius:50%;background:var(--orange);box-shadow:0 0 24px rgba(244,123,32,.45)}.signal i:nth-child(2){opacity:.65}.signal i:nth-child(3){opacity:.3}.benefits{padding:72px 0}.heading{text-align:center;max-width:760px;margin:0 auto 38px}.heading p{color:var(--muted)}.benefit-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:25px}.card .num{color:var(--orange);font-family:Montserrat;font-weight:800;font-size:13px}.card h3{font-size:19px;margin-top:16px}.card p{color:var(--muted);font-size:14px;margin:0}.process{background:#081f3b;padding:80px 0}.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.step{position:relative;padding:24px 16px 10px;border-top:2px solid rgba(244,123,32,.55)}.step b{font-family:Montserrat;color:var(--orange);font-size:13px}.step strong{display:block;margin:12px 0 8px;font-family:Montserrat}.step p{color:var(--muted);font-size:13px;margin:0}.collective{padding:80px 0}.collective-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}.collective-visual{min-height:360px;border-radius:24px;background:linear-gradient(135deg,rgba(244,123,32,.15),rgba(255,255,255,.04)),url('../images/services/installation.jpg') center/cover;position:relative;overflow:hidden}.collective-visual:after{content:"IMMEUBLE • HÔTEL • ÉTABLISSEMENT";position:absolute;left:20px;bottom:20px;background:rgba(6,26,51,.82);border:1px solid var(--line);padding:12px 15px;border-radius:8px;font:700 11px Montserrat;letter-spacing:.08em}.collective p,.form-copy p{color:var(--muted)}.tags{display:flex;gap:8px;flex-wrap:wrap;margin:22px 0}.tags span{border:1px solid var(--line);border-radius:999px;padding:8px 12px;font-size:12px;color:#d7e2ee}.request{padding:80px 0;background:#071a31}.request-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:45px;align-items:start}.form-card{background:#fff;color:#172334;border-radius:18px;padding:30px}.form-group{margin-bottom:16px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}.form-group label{display:block;font-weight:700;font-size:13px;margin-bottom:7px}.form-group input,.form-group select,.form-group textarea{width:100%;padding:12px 13px;border:1px solid #d5dce5;border-radius:8px;font:inherit;background:#fff}.form-group textarea{resize:vertical}.form-card .btn{width:100%}.privacy{display:block;color:#6d7886;margin-top:12px;font-size:11px}.final{padding:85px 0;text-align:center;background:radial-gradient(circle at 50% 0,rgba(244,123,32,.14),transparent 35%)}.final p{color:var(--muted)}.footer{border-top:1px solid var(--line);padding:30px 0}.footer-inner{display:flex;justify-content:space-between;gap:20px;align-items:center}.footer a{color:#b9c8d9;text-decoration:none;margin-left:20px;font-size:13px}@media(max-width:900px){.nav{display:none;position:absolute;top:76px;left:0;right:0;background:#061a33;padding:18px 4%;flex-direction:column;border-bottom:1px solid var(--line)}.nav.open{display:flex}.menu{display:block}.header-actions .btn{display:none}.hero-grid,.collective-grid,.request-grid{grid-template-columns:1fr}.hero{padding-top:65px}.hero-panel{min-height:280px}.benefit-grid{grid-template-columns:1fr 1fr}.steps{grid-template-columns:1fr 1fr}.step:last-child{grid-column:1/-1}.footer-inner{flex-direction:column;align-items:flex-start}.footer a:first-of-type{margin-left:0}}@media(max-width:600px){.brand img{width:135px}.hero{padding:55px 0}.hero p{font-size:16px}.hero-actions .btn{width:100%}.benefit-grid,.steps,.form-row{grid-template-columns:1fr}.step:last-child{grid-column:auto}.collective-visual{min-height:270px}.form-card{padding:22px}.footer a{display:block;margin:8px 0}}