*{box-sizing:border-box}
body{margin:0;font-family:Arial,Helvetica,sans-serif;color:#172536;background:#fff;line-height:1.65}
.container{max-width:1180px;margin:auto;padding:0 24px}
.hero{background:linear-gradient(135deg,#06111f,#0a3155);color:#fff;padding:72px 0}
.hero-grid{display:grid;grid-template-columns:46% 54%;gap:55px;align-items:center}
.product-img{width:100%;max-width:520px;aspect-ratio:1/1;background:#102a43;border:1px solid #315875;border-radius:18px;display:flex;align-items:center;justify-content:center;text-align:center;color:#8fb4d3;font-size:14px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:1px;font-size:22px;margin-bottom:22px}
.brand-mark{width:42px;height:42px;border:2px solid #1685ff;border-radius:8px;display:flex;align-items:center;justify-content:center;color:#1685ff}
h1{font-size:48px;line-height:1.12;margin:0 0 20px;letter-spacing:-1px}
.hero p{font-size:20px;color:#d7e6f2;margin:0 0 28px}
.badges{display:flex;flex-wrap:wrap;gap:9px;margin:20px 0}
.badge{padding:7px 12px;border:1px solid #3d6888;border-radius:30px;background:#0b2439;font-size:13px}
.cta{display:inline-block;background:#1685ff;color:#fff;text-decoration:none;padding:14px 24px;border-radius:7px;font-weight:700;margin-top:12px}
.note{font-size:13px;color:#a9c2d5;margin-top:14px}

section{padding:72px 0}
section:nth-child(3){background:#f5f8fb}
.section-title{text-align:center;max-width:780px;margin:0 auto 42px}
.section-title h2{font-size:34px;margin:0 0 10px;color:#10243a}
.section-title p{color:#637386;margin:0}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.card{background:#fff;border:1px solid #e1e8ef;border-radius:12px;padding:26px;box-shadow:0 8px 25px rgba(15,45,70,.05)}
.icon{width:44px;height:44px;border-radius:9px;background:#eaf4ff;color:#1685ff;display:flex;align-items:center;justify-content:center;font-size:21px;font-weight:800;margin-bottom:18px}
.card strong{display:block;font-size:19px;color:#112a42;margin-bottom:8px}
.card span{font-size:14px;color:#687889}
.trust{margin-top:30px;background:#eef6fd;border-left:4px solid #1685ff;padding:18px 22px;border-radius:6px;color:#42586d;font-size:14px}

.purchase{display:grid;grid-template-columns:1fr 1fr;gap:28px}
.purchase-box{border:1px solid #dce5ed;border-radius:12px;padding:28px;background:#fff}
.purchase-box h3{margin:0 0 18px;color:#12304b;font-size:22px}
.purchase-box ul{margin:0;padding-left:20px}
.purchase-box li{margin:9px 0;color:#526477}
.warning{background:#fff7e8;border:1px solid #f0d69d;border-left:5px solid #e5a529}
.warning h3{color:#8a5b08}
.warning li{color:#6e5a31}

.features{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.feature{padding:25px;border-radius:12px;background:#f7f9fb;border:1px solid #e2e9ef}
.feature .icon{margin-bottom:15px}
.feature h3{font-size:18px;margin:0 0 8px;color:#122d47}
.feature p{font-size:14px;color:#657587;margin:0}

.specs{margin-top:38px;border:1px solid #dce5ed;border-radius:12px;overflow:hidden}
.specs table{width:100%;border-collapse:collapse}
.specs th,.specs td{padding:13px 16px;border-bottom:1px solid #e6edf2;text-align:left;font-size:14px}
.specs th{width:34%;background:#f3f7fa;color:#29435a}
.specs td{color:#4d6071}

.final-cta{margin-top:45px;background:#071827;border-radius:14px;padding:38px;text-align:center;color:#fff}
.final-cta h2{margin:0 0 10px;font-size:29px}
.final-cta p{color:#b9ccdc;margin:0 0 18px}

@media(max-width:900px){
.hero-grid,.purchase{grid-template-columns:1fr}
.cards,.features{grid-template-columns:repeat(2,1fr)}
h1{font-size:38px}
}
@media(max-width:600px){
.cards,.features{grid-template-columns:1fr}
section{padding:55px 0}
.container{padding:0 18px}
h1{font-size:32px}
.hero p{font-size:17px}
}