*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Arial,Helvetica,sans-serif;color:#1e293b;background:#fff;line-height:1.65}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.topbar{background:#0f172a;color:#e2e8f0;padding:9px 6%;font-size:14px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap}
header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(10px);border-bottom:1px solid #e2e8f0}
.nav{padding:18px 6%;display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{font-size:26px;font-weight:800;color:#0f172a;letter-spacing:.2px}
.logo span{display:block;font-size:12px;font-weight:500;color:#64748b;letter-spacing:1.8px;text-transform:uppercase}
.navlinks{display:flex;gap:24px;font-size:15px;font-weight:600;color:#334155}
.navlinks a:hover{color:#0f172a}
.btn{display:inline-flex;align-items:center;justify-content:center;border-radius:6px;padding:12px 22px;font-weight:700;background:#0f172a;color:#fff;border:1px solid #0f172a}
.btn.secondary{background:#fff;color:#0f172a}
.hero{padding:82px 6%;display:grid;grid-template-columns:1.05fr .95fr;gap:42px;align-items:center;background:linear-gradient(135deg,#f8fafc,#eef2f7)}
.hero h1{font-size:56px;line-height:1.08;color:#0f172a;margin-bottom:22px;max-width:760px}
.hero p{font-size:19px;color:#475569;max-width:680px;margin-bottom:30px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-img{border-radius:26px;overflow:hidden;box-shadow:0 24px 70px rgba(15,23,42,.14);border:1px solid #e2e8f0;background:white}
.hero-img img{width:100%;height:430px;object-fit:cover}
section{padding:82px 6%}
.gray{background:#f8fafc}
.title{text-align:center;max-width:850px;margin:0 auto 44px}
.title small{letter-spacing:3px;text-transform:uppercase;color:#64748b;font-weight:800;font-size:13px}
.title h1,.title h2{font-size:40px;line-height:1.15;color:#0f172a;margin-top:10px}
.title p{margin-top:15px;color:#64748b;font-size:16px}
.breadcrumb{padding:18px 6%;background:#f8fafc;border-bottom:1px solid #e2e8f0;color:#64748b;font-size:14px}
.breadcrumb a{color:#0f172a;font-weight:600}
.category-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.category{background:#fff;border:1px solid #e2e8f0;border-radius:18px;padding:30px;box-shadow:0 10px 30px rgba(15,23,42,.05)}
.category h3{font-size:22px;color:#0f172a;margin-bottom:10px}
.category p{color:#64748b;margin-bottom:16px}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.product-card{background:#fff;border:1px solid #e2e8f0;border-radius:20px;overflow:hidden;box-shadow:0 12px 38px rgba(15,23,42,.07);transition:.2s ease}
.product-card:hover{transform:translateY(-4px);box-shadow:0 18px 46px rgba(15,23,42,.12)}
.product-card img{height:255px;width:100%;object-fit:cover;background:#f1f5f9}
.product-body{padding:24px}
.tag{display:inline-flex;background:#e2e8f0;color:#334155;border-radius:999px;padding:5px 11px;font-size:12px;font-weight:700;margin-bottom:12px}
.product-body h3{font-size:24px;color:#0f172a;margin-bottom:7px}
.product-body p{color:#64748b;margin-bottom:14px}
.product-body ul{list-style:none;border-top:1px solid #e2e8f0;padding-top:14px;font-size:14px;color:#475569}
.product-body li{margin:7px 0}
.link-more{display:inline-flex;margin-top:16px;font-weight:800;color:#0f172a}
.split{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:center}
.dark-box{background:#0f172a;color:#fff;border-radius:24px;padding:42px}
.dark-box h2{font-size:36px;line-height:1.15;margin-bottom:16px}
.dark-box p{color:#cbd5e1;margin-bottom:14px}
.feature-list{display:grid;gap:16px}
.feature{padding:22px;background:#fff;border:1px solid #e2e8f0;border-radius:16px;box-shadow:0 8px 24px rgba(15,23,42,.04)}
.feature h3{font-size:20px;color:#0f172a;margin-bottom:8px}
.feature p{color:#64748b}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{background:#fff;border:1px solid #e2e8f0;border-radius:18px;padding:24px}
.num{width:42px;height:42px;background:#0f172a;color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;margin-bottom:14px}
.spec-table{overflow:auto;background:#fff;border:1px solid #e2e8f0;border-radius:20px;box-shadow:0 12px 38px rgba(15,23,42,.06)}
table{border-collapse:collapse;width:100%;min-width:900px}
th,td{padding:14px 16px;border-bottom:1px solid #e2e8f0;text-align:left;font-size:14px;vertical-align:top}
th{background:#0f172a;color:#fff;font-weight:700;position:sticky;top:0}
tr:last-child td{border-bottom:none}
.detail-hero{padding:54px 6%;background:#f8fafc}
.detail-grid{display:grid;grid-template-columns:.95fr 1.05fr;gap:42px;align-items:start}
.detail-img{border-radius:24px;overflow:hidden;border:1px solid #e2e8f0;box-shadow:0 18px 50px rgba(15,23,42,.12);background:#fff}
.detail-img img{width:100%;height:520px;object-fit:cover}
.detail-info h1{font-size:44px;color:#0f172a;line-height:1.1;margin:12px 0 14px}
.detail-info p{color:#475569;font-size:17px;margin-bottom:18px}
.info-card{background:#fff;border:1px solid #e2e8f0;border-radius:18px;padding:22px;margin-top:20px}
.info-card h3{color:#0f172a;margin-bottom:12px}
.info-card ul{padding-left:20px;color:#475569}
.info-card li{margin:7px 0}
.faq{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.faq-item{background:#fff;border:1px solid #e2e8f0;border-radius:18px;padding:24px}
.faq-item h3{color:#0f172a;margin-bottom:8px}
.faq-item p{color:#64748b}
.contact{background:#0f172a;color:#fff}
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:start}
.contact h2{font-size:38px;line-height:1.15;margin-bottom:16px}
.contact p{color:#cbd5e1;margin-bottom:18px}
.contact-card{background:#fff;color:#1e293b;border-radius:22px;padding:28px}
.contact-card h3{font-size:24px;color:#0f172a;margin-bottom:16px}
.field{margin-bottom:13px}
.field label{display:block;font-weight:700;font-size:14px;margin-bottom:6px;color:#334155}
.field input,.field textarea{width:100%;border:1px solid #cbd5e1;border-radius:8px;padding:13px 14px;font-size:15px;font-family:Arial,Helvetica,sans-serif}
.field textarea{height:122px;resize:vertical}
.mailto{width:100%;margin-top:8px}
footer{padding:28px 6%;background:#020617;color:#94a3b8;text-align:center;font-size:14px}
@media(max-width:980px){
  .hero,.split,.contact-wrap,.detail-grid{grid-template-columns:1fr}
  .hero h1,.detail-info h1{font-size:40px}
  .category-grid,.product-grid,.process-grid,.faq{grid-template-columns:1fr}
  .navlinks{display:none}
  .hero{padding-top:52px}
  .detail-img img{height:340px}
}