:root{
  --navy:#071827; --navy2:#0d2940; --blue:#1976d2; --light:#f4f7fa;
  --text:#0b1b29; --muted:#6b7785; --white:#fff; --line:#d9e0e7;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--text);background:#fff}
a{text-decoration:none;color:inherit}
img,video{display:block;max-width:100%}

.site-header{
  position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;
  padding:16px 5%;background:#061727;color:#fff;border-bottom:1px solid rgba(255,255,255,.08)
}
.brand{display:flex;flex-direction:column;font-weight:800;letter-spacing:.18em}
.brand span{font-size:24px}.brand b{font-size:11px;letter-spacing:.38em}
nav{display:flex;gap:22px;align-items:center;font-size:14px}
nav a{opacity:.9}.admin-link{padding:8px 12px;border:1px solid rgba(255,255,255,.35);border-radius:6px}

.hero{position:relative;min-height:570px;display:flex;align-items:center;overflow:hidden;background:#0a1d2d}
.hero-bg{position:absolute;inset:0;background:
  linear-gradient(90deg,rgba(5,18,30,.92) 0%,rgba(5,18,30,.68) 45%,rgba(5,18,30,.25) 100%),
  url('media/velsen-425-dc-01.jpg') center/cover no-repeat}
.hero-content{position:relative;z-index:1;color:#fff;padding:70px 7%;max-width:760px}
.eyebrow{font-size:13px;letter-spacing:.2em;font-weight:700;text-transform:uppercase}
.eyebrow.dark{color:#4b6073}
.hero h1{font-size:68px;line-height:.95;margin:18px 0 24px}
.hero p{font-size:20px;max-width:590px}
.actions{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
.btn{display:inline-block;padding:14px 20px;border-radius:5px;font-weight:700;font-size:14px}
.primary{background:#1976d2;color:#fff}.outline{border:1px solid rgba(255,255,255,.7);color:#fff}

.benefits{display:grid;grid-template-columns:repeat(4,1fr);background:#0b2236;color:#fff}
.benefits div{padding:24px 26px;border-right:1px solid rgba(255,255,255,.1)}
.benefits strong,.benefits span{display:block}.benefits span{opacity:.72;margin-top:6px;font-size:13px}

.section{padding:70px 6%}.section-head{margin-bottom:30px}.section-head h2,.section h2,.contact h2{font-size:38px;margin:8px 0}
.section-head p{color:var(--muted)}

.model-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.model-card{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff;box-shadow:0 8px 28px rgba(10,30,45,.06)}
.model-img{height:260px;background:#e9eef3;overflow:hidden}
.model-img img{width:100%;height:100%;object-fit:cover}
.model-body{padding:20px}.model-body h3{font-size:24px;margin:0 0 14px}
.specs{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:14px 0}
.specs b,.specs span{display:block}.specs span{font-size:12px;color:var(--muted);margin-top:4px}
.price{font-size:24px;font-weight:800;margin:18px 0}.card-btn{font-weight:700;color:#1768b2}

.gallery-section{background:#071827;color:#fff;padding:70px 6%}
.section-head.light p{color:#b6c2cc}
.photo-gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:18px}
.photo-gallery img,.photo-gallery video{width:100%;height:220px;object-fit:cover;border-radius:8px;background:#000}

.split,.about{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:start}
.feature-box{background:#f4f7fa;border-radius:10px;padding:28px}
.feature-box span{font-weight:800;color:#1976d2}

.contact{display:grid;grid-template-columns:1fr 1fr;gap:50px;background:#0b2236;color:#fff;padding:70px 6%}
.contact form{display:grid;gap:12px}
.contact input,.contact textarea{padding:14px;border:0;border-radius:5px;font:inherit}
.contact textarea{min-height:120px;resize:vertical}

footer{display:flex;justify-content:space-between;padding:20px 6%;background:#061727;color:#aeb9c2;font-size:13px}

@media(max-width:900px){
  .site-header{align-items:flex-start;gap:12px;flex-direction:column}
  nav{flex-wrap:wrap;gap:12px}
  .hero{min-height:500px}.hero h1{font-size:48px}
  .benefits{grid-template-columns:1fr 1fr}
  .model-grid{grid-template-columns:1fr 1fr}
  .photo-gallery{grid-template-columns:1fr 1fr}
  .split,.about,.contact{grid-template-columns:1fr}
}
@media(max-width:600px){
  .hero h1{font-size:38px}.hero-content{padding:55px 6%}
  .benefits,.model-grid,.photo-gallery{grid-template-columns:1fr}
  .section-head h2,.section h2,.contact h2{font-size:30px}
}

.model-click,.model-title-link{color:inherit;text-decoration:none}.model-click{display:block}
.model-click:hover img{transform:scale(1.025)}.model-img img{transition:transform .2s ease}
.model-detail{max-width:1200px;margin:0 auto;padding:42px 22px}.model-detail h1{font-size:44px;margin:0 0 10px}
.model-lead{font-size:18px;line-height:1.65;max-width:900px}.detail-price{font-size:28px;font-weight:800;margin:18px 0}
.detail-gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:24px}
.detail-gallery img,.detail-gallery video{width:100%;height:210px;object-fit:cover;border-radius:8px;background:#071727}
.detail-gallery img{cursor:pointer}.back-link{display:inline-block;margin-bottom:24px;text-decoration:none;font-weight:700;color:#123b5d}
.lightbox{position:fixed;inset:0;background:#000d;display:none;align-items:center;justify-content:center;z-index:9999;padding:30px}
.lightbox.open{display:flex}.lightbox img{max-width:92vw;max-height:88vh}.lightbox button{position:absolute;top:20px;right:24px;font-size:32px;background:none;color:white;border:0;cursor:pointer}
@media(max-width:800px){.detail-gallery{grid-template-columns:repeat(2,1fr)}.model-detail h1{font-size:34px}}