:root{
  --ink:#2b3a4a;          /* тёмно-синий из лого */
  --ink-soft:#52606b;
  --accent:#1899b0;       /* бирюза из лого */
  --accent-deep:#127a8d;
  --accent-soft:#e3f4f7;
  --bg:#f4f6f9;
  --line:#e4e9ed;
  --white:#fff;
  --radius:14px;
  --shadow:0 8px 30px rgba(43,58,74,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Inter',sans-serif;color:var(--ink);background:var(--white);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
.container{max-width:1160px;margin:0 auto;padding:0 24px}
img{max-width:100%;display:block}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;gap:32px;height:70px}
.logo{font-size:24px;font-weight:800;color:var(--ink);letter-spacing:-.02em}
.logo span{color:var(--accent)}
.main-nav{display:flex;gap:28px;flex:1}
.main-nav a{font-weight:500;color:var(--ink-soft);transition:color .15s}
.main-nav a:hover{color:var(--accent)}
.header-actions{display:flex;gap:10px}
.burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.burger span{width:24px;height:2px;background:var(--ink);border-radius:2px;transition:.25s}
.burger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.open span:nth-child(2){opacity:0}
.burger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-nav{display:none;flex-direction:column;background:var(--white);border-bottom:1px solid var(--line)}
.mobile-nav.open{display:flex}
.mobile-nav a{padding:14px 24px;border-top:1px solid var(--line);font-weight:500}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:10px;font-weight:600;font-size:15px;cursor:pointer;border:none;transition:.2s;font-family:inherit;white-space:nowrap}
.btn-primary{background:linear-gradient(135deg,var(--ink),var(--accent));color:#fff}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 26px rgba(24,153,176,.28)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-deep)}
.btn-outline{background:transparent;border:1.5px solid var(--line);color:var(--ink)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent)}
.btn-sm{padding:9px 18px;font-size:14px}
.btn-lg{padding:16px 36px;font-size:16px}

/* Hero */
.hero{background:linear-gradient(135deg,#243442 0%,#2b3a4a 45%,#1899b0 130%);color:#fff;padding:90px 0 100px;position:relative;overflow:hidden}
.hero::after{content:'';position:absolute;width:600px;height:600px;background:radial-gradient(circle,rgba(255,255,255,.06),transparent 70%);top:-200px;right:-150px}
.hero-inner{position:relative;z-index:2;max-width:720px}
.hero h1{font-size:52px;font-weight:900;line-height:1.1;letter-spacing:-.02em;margin-bottom:22px}
.hero p{font-size:20px;opacity:.92;margin-bottom:36px;max-width:600px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero .btn-outline{border-color:rgba(255,255,255,.4);color:#fff}
.hero .btn-outline:hover{background:rgba(255,255,255,.1);border-color:#fff;color:#fff}

/* Sections */
.section{padding:80px 0}
.section-head{text-align:center;margin-bottom:50px}
.section-head h2{font-size:38px;font-weight:800;letter-spacing:-.02em;margin-bottom:12px}
.section-head p{font-size:18px;color:var(--ink-soft)}
.section-alt{background:var(--bg)}

/* Features grid */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.feature{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);padding:32px 28px;transition:.2s}
.feature:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.feature-icon{width:54px;height:54px;border-radius:13px;background:var(--accent-soft);color:var(--accent);display:flex;align-items:center;justify-content:center;margin-bottom:18px}
.feature h3{font-size:19px;font-weight:700;margin-bottom:10px}
.feature p{color:var(--ink-soft);font-size:15px}

/* Product cards */
.products-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pcard{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.2s;display:flex;flex-direction:column}
.pcard:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.pcard-cover{aspect-ratio:16/10;background:var(--bg);overflow:hidden;display:flex;align-items:center;justify-content:center}
.pcard-cover img{width:100%;height:100%;object-fit:cover}
.pcard-cover-empty{color:var(--accent);opacity:.3}
.pcard-body{padding:22px;display:flex;flex-direction:column;flex:1}
.pcard-brand{font-size:12px;font-weight:600;color:var(--accent);text-transform:uppercase;letter-spacing:.04em;margin-bottom:8px}
.pcard-name{font-size:18px;font-weight:700;margin-bottom:8px}
.pcard-tagline{color:var(--ink-soft);font-size:14px;margin-bottom:18px;flex:1}
.pcard-foot{display:flex;align-items:center;justify-content:space-between;gap:12px}
.pcard-price{font-size:22px;font-weight:800}
.pcard-price-old{font-size:15px;color:#aab4bd;text-decoration:line-through;margin-right:8px;font-weight:500}

/* Page header */
.page-head{background:var(--bg);padding:50px 0;border-bottom:1px solid var(--line)}
.page-head h1{font-size:36px;font-weight:800}
.page-head .crumbs{font-size:14px;color:var(--ink-soft);margin-bottom:10px}
.page-head .crumbs a{color:var(--accent)}

/* CTA */
.cta{background:linear-gradient(135deg,var(--ink),var(--accent));color:#fff;border-radius:20px;padding:56px 48px;text-align:center;margin:80px 0}
.cta h2{font-size:34px;font-weight:800;margin-bottom:14px}
.cta p{font-size:18px;opacity:.9;margin-bottom:28px}
.cta .btn-accent{background:#fff;color:var(--ink)}
.cta .btn-accent:hover{background:#f0f0f0}

/* Footer */
.site-footer{background:var(--ink);color:rgba(255,255,255,.75);padding:56px 0 0;margin-top:0}
.footer-inner{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px}
.logo-footer{color:#fff;margin-bottom:14px}
.footer-col p{font-size:14px;line-height:1.7}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;font-weight:700}
.footer-col a{display:block;font-size:14px;padding:5px 0;color:rgba(255,255,255,.7);transition:color .15s}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 24px;font-size:13px;color:rgba(255,255,255,.5)}

/* Product page */
.product-detail{display:grid;grid-template-columns:1.3fr 1fr;gap:50px;padding:60px 0}
.product-cover{border-radius:var(--radius);overflow:hidden;background:var(--bg);aspect-ratio:16/10}
.product-info h1{font-size:32px;font-weight:800;margin-bottom:10px}
.product-tagline{font-size:18px;color:var(--ink-soft);margin-bottom:24px}
.product-price-block{display:flex;align-items:baseline;gap:12px;margin-bottom:28px}
.product-price{font-size:36px;font-weight:900}
.product-desc{color:var(--ink-soft);line-height:1.8;margin:28px 0}
.product-actions{display:flex;gap:12px;flex-wrap:wrap}

/* Empty state */
.empty-state{text-align:center;padding:80px 20px;color:var(--ink-soft)}

@media(max-width:900px){
  .features,.products-grid{grid-template-columns:1fr 1fr}
  .footer-inner{grid-template-columns:1fr 1fr}
  .product-detail{grid-template-columns:1fr;gap:30px}
  .hero h1{font-size:40px}
}
@media(max-width:680px){
  .main-nav,.header-actions{display:none}
  .burger{display:flex}
  .features,.products-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr}
  .hero{padding:60px 0 70px}
  .hero h1{font-size:32px}
  .hero p{font-size:17px}
  .section{padding:54px 0}
  .section-head h2{font-size:30px}
  .cta{padding:40px 24px}
}