:root{
  --navy:#07111f; --dark:#0a0f1a; --blue:#007bff; --cyan:#00d1ff;
  --light:#f4f7fa; --silver:#c9d1d9; --text:#152033; --muted:#667085;
  --white:#fff; --line:#dbe3ec; --shadow:0 18px 50px rgba(7,17,31,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--text);background:#fff;line-height:1.6}
a{text-decoration:none;color:inherit}
.container{width:min(1180px,92%);margin:auto}
.topbar{background:var(--navy);color:#dcecff;font-size:13px;padding:8px 0}
.topbar .container{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.nav{position:sticky;top:0;z-index:50;background:rgba(7,17,31,.96);backdrop-filter:blur(10px);border-bottom:1px solid rgba(0,209,255,.2)}
.nav-inner{height:78px;display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{display:flex;align-items:center;gap:12px;color:#fff;font-weight:800;letter-spacing:1px}
.brand img{width:54px;height:54px;object-fit:contain}
.brand span{font-size:21px}.brand small{display:block;color:var(--cyan);font-size:10px;letter-spacing:3px;margin-top:-4px}
.menu{display:flex;gap:24px;align-items:center;color:#fff;font-weight:600;font-size:14px}
.menu a{opacity:.9}.menu a:hover{color:var(--cyan)}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 20px;border-radius:8px;font-weight:800;border:1px solid transparent;cursor:pointer}
.btn-primary{background:linear-gradient(135deg,var(--blue),var(--cyan));color:#fff;box-shadow:0 8px 25px rgba(0,123,255,.28)}
.btn-dark{background:var(--navy);color:#fff}
.btn-outline{border-color:var(--cyan);color:var(--cyan)}
.mobile-toggle{display:none;color:#fff;font-size:25px;background:none;border:0}
.hero{background:linear-gradient(135deg,#07111f 0%,#0a1424 55%,#06101b 100%);color:#fff;padding:70px 0 75px;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:42px;align-items:center}
.hero h1{font-size:clamp(38px,5vw,65px);line-height:1.03;margin:0 0 20px}
.hero h1 span{color:var(--cyan)}
.hero p{font-size:18px;color:#c7d7ea;max-width:620px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}
.hero-img{width:100%;border-radius:18px;border:1px solid rgba(0,209,255,.35);box-shadow:0 20px 70px rgba(0,0,0,.4)}
.section{padding:72px 0}
.section.dark{background:var(--dark);color:#fff}
.section-head{max-width:720px;margin:0 auto 40px;text-align:center}
.kicker{color:var(--blue);font-weight:900;text-transform:uppercase;letter-spacing:2px;font-size:12px}
.section.dark .kicker{color:var(--cyan)}
h2{font-size:clamp(30px,4vw,44px);line-height:1.1;margin:8px 0 14px}
.section-head p{color:var(--muted)}.section.dark .section-head p{color:#aebed0}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:25px;box-shadow:var(--shadow)}
.dark .card{background:#0f1a2a;border-color:#21324a;color:#fff}
.card-icon{font-size:32px;color:var(--cyan);margin-bottom:10px}
.card h3{margin:5px 0 8px;font-size:20px}.card p{margin:0;color:var(--muted)}.dark .card p{color:#afbed0}
.features{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:#dce5ee;border-radius:16px;overflow:hidden}
.feature{background:#fff;padding:26px;text-align:center}.feature strong{display:block;font-size:16px}.feature span{color:var(--muted);font-size:13px}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.product{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;box-shadow:var(--shadow)}
.product .pic{height:180px;background:linear-gradient(135deg,#08111e,#172941);display:grid;place-items:center;color:var(--cyan);font-size:58px}
.product-body{padding:20px}.price{font-size:23px;font-weight:900;color:var(--blue);margin:10px 0}
.service-list{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.service{padding:22px;border-left:4px solid var(--cyan);background:#f7f9fc;border-radius:8px}
.service h3{margin:0 0 6px}.service p{margin:0;color:var(--muted)}
.cta{background:linear-gradient(135deg,#07111f,#0b2036);color:#fff;border-radius:18px;padding:42px;display:flex;align-items:center;justify-content:space-between;gap:25px}
.cta p{color:#b9c9dc;margin:6px 0 0}.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.contact-box{padding:28px;border:1px solid var(--line);border-radius:14px;background:#fff;box-shadow:var(--shadow)}
.contact-item{display:flex;gap:12px;margin:18px 0}.contact-item b{display:block}.contact-item span{color:var(--muted)}
form{display:grid;gap:12px}input,textarea,select{width:100%;padding:13px;border:1px solid #ccd6e2;border-radius:7px;font:inherit}textarea{min-height:130px}
footer{background:#050b13;color:#c8d5e5;padding:45px 0 20px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:35px}.footer-brand img{width:190px;max-width:100%;margin-bottom:10px}.footer h3{color:#fff}.footer a{display:block;margin:8px 0}.footer-bottom{border-top:1px solid #1e3044;margin-top:35px;padding-top:18px;font-size:12px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.page-hero{background:linear-gradient(135deg,#07111f,#10243b);color:#fff;padding:55px 0}.page-hero h1{font-size:46px;margin:0 0 8px}.page-hero p{color:#c5d5e6;margin:0;max-width:700px}
.note{padding:15px 18px;border-left:4px solid var(--cyan);background:#effaff;border-radius:6px;color:#334155}
@media(max-width:900px){
 .menu{display:none}.mobile-toggle{display:block}.nav-inner{height:68px}
 .hero-grid,.contact-grid{grid-template-columns:1fr}.hero{padding-top:45px}.cards,.product-grid{grid-template-columns:repeat(2,1fr)}.features{grid-template-columns:repeat(2,1fr)}
 .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:620px){
 .topbar .container{justify-content:center}.brand span{font-size:18px}
 .hero h1{font-size:42px}.cards,.product-grid,.service-list,.features,.footer-grid{grid-template-columns:1fr}
 .cta{padding:28px;display:block}.cta .btn{margin-top:18px}.section{padding:55px 0}
}