:root{
    --red:#C1121F; --red-d:#9a0e18; --ink:#16263b; --ink-2:#1d3b5c;
    --muted:#5b6b7d; --line:#e6eaef; --bg:#f6f8fb; --bg-soft:#eef3f8;
    --green:#4f9d3a; --radius:14px; --shadow:0 10px 30px rgba(20,38,59,.08);
    --maxw:1760px;
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{font-family:-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:#fff;line-height:1.6;-webkit-font-smoothing:antialiased}
  a{color:inherit;text-decoration:none}
  img{max-width:100%;display:block}
  .wrap{width:92vw;max-width:var(--maxw);margin:0 auto;padding:0 22px}
  .btn{display:inline-block;padding:13px 26px;border-radius:10px;font-weight:600;font-size:15px;cursor:pointer;border:none;transition:.2s;text-align:center}
  .btn-red{background:var(--red);color:#fff}
  .btn-red:hover{background:var(--red-d)}
  .btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.6)}
  .btn-ghost:hover{background:rgba(255,255,255,.12)}
  .btn-line{background:#fff;color:var(--ink);border:1.5px solid var(--line)}
  .btn-line:hover{border-color:var(--red);color:var(--red)}
  .sec{padding:78px 0}
  .sec-soft{background:var(--bg)}
  .eyebrow{color:var(--red);font-weight:700;letter-spacing:.12em;text-transform:uppercase;font-size:13px;margin-bottom:12px}
  h2.title{font-size:clamp(26px,3.4vw,38px);line-height:1.18;color:var(--ink);margin-bottom:16px;font-weight:800}
  .lead{color:var(--muted);font-size:17px;max-width:760px}
.form-group {
    margin-bottom: 1rem;
}
  /* HEADER */
  header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
  .nav{display:flex;align-items:center;justify-content:space-between;height:74px;gap:20px}
  .brand{display:flex;align-items:center;gap:12px}
  .brand img{height:40px;width:auto}
  .brand .b-sub{font-size:11px;color:var(--muted);letter-spacing:.05em}
  .menu{display:flex;gap:30px;list-style:none}
  .menu a{font-weight:500;font-size:15px;color:var(--ink);transition:.2s}
  .menu a:hover{color:var(--red)}
  .nav-cta{display:flex;align-items:center;gap:18px}
  .nav-phone{font-weight:700;font-size:16px;white-space:nowrap}
  .nav-phone span{display:block;font-size:11px;font-weight:500;color:var(--muted)}
  .burger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
  .burger span{width:26px;height:2.5px;background:var(--ink);border-radius:2px;transition:.3s}

  /* HERO */
  .hero{background:linear-gradient(135deg,#16263b 0%,#1d3b5c 55%,#244a73 100%);color:#fff;position:relative;overflow:hidden}
  .hero::after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;background:radial-gradient(circle,rgba(193,18,31,.35),transparent 70%);border-radius:50%}
  .hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;padding-top:64px;padding-bottom:64px;position:relative;z-index:2}
  .hero h1{font-size:clamp(30px,4.4vw,50px);line-height:1.1;font-weight:800;margin-bottom:20px}
  .hero h1 b{color:#ff6b76}
  .hero p{font-size:18px;color:#cdd8e6;margin-bottom:30px;max-width:560px}
  .hero-actions{display:flex;gap:14px;flex-wrap:wrap}
  .hero-badges{display:flex;gap:26px;margin-top:38px;flex-wrap:wrap}
  .hero-badges .b{}
  .hero-badges .n{font-size:30px;font-weight:800;color:#fff}
  .hero-badges .t{font-size:13px;color:#aebccd}
  .hero-img{background:#fff;border-radius:18px;padding:22px;box-shadow:0 24px 60px rgba(0,0,0,.35)}
  .hero-img img{border-radius:6px}
  .hero-img .cap{color:var(--muted);font-size:13px;text-align:center;margin-top:10px}

  /* MARQUEE / trust */
  .strip{background:var(--ink);color:#cdd8e6;padding:18px 0;font-size:14px}
  .strip .wrap{display:flex;flex-wrap:wrap;gap:14px 40px;justify-content:center;align-items:center}
  .strip b{color:#fff}

  /* FEATURES */
  .grid{display:grid;gap:22px}
  .features{grid-template-columns:repeat(3,1fr)}
  .card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;transition:.25s}
  .card:hover{box-shadow:var(--shadow);transform:translateY(-3px);border-color:transparent}
  .ic{width:52px;height:52px;border-radius:12px;background:var(--bg-soft);display:flex;align-items:center;justify-content:center;margin-bottom:16px}
  .ic svg{width:26px;height:26px;stroke:var(--red)}
  .card h3{font-size:18px;margin-bottom:8px}
  .card p{color:var(--muted);font-size:15px}

  /* PRODUCTS */
  .products{grid-template-columns:repeat(2,1fr)}
  .prod{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.25s}
  .prod:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
  .prod-img{background:var(--bg-soft);padding:26px;display:flex;align-items:center;justify-content:center;min-height:210px}
  .prod-img img{max-height:170px;width:auto;object-fit:contain}
  .prod-body{padding:26px;display:flex;flex-direction:column;flex:1}
  .tag{display:inline-block;background:#fdeaec;color:var(--red);font-size:12px;font-weight:700;padding:4px 11px;border-radius:30px;margin-bottom:12px;letter-spacing:.03em}
  .prod-body h3{font-size:21px;margin-bottom:6px}
  .prod-body .models{color:var(--ink-2);font-weight:600;font-size:14px;margin-bottom:10px}
  .prod-body p{color:var(--muted);font-size:14.5px;margin-bottom:16px}
  .specs{list-style:none;margin:0 0 20px;border-top:1px solid var(--line)}
  .specs li{display:flex;justify-content:space-between;gap:12px;padding:9px 0;border-bottom:1px solid var(--line);font-size:14px}
  .specs li span:first-child{color:var(--muted)}
  .specs li span:last-child{font-weight:600;text-align:right}
  .prod-foot{margin-top:auto}

  /* APPLICATIONS */
  .apps{grid-template-columns:repeat(3,1fr);gap:16px}
  .app{display:flex;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 20px}
  .app svg{width:28px;height:28px;stroke:var(--red);flex-shrink:0}
  .app b{font-size:15px}

  /* ABOUT */
  .about{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
  .about .pic{border-radius:var(--radius);overflow:hidden;background:var(--bg-soft);padding:24px;border:1px solid var(--line)}
  .about ul{list-style:none;margin-top:18px}
  .about ul li{padding-left:30px;position:relative;margin-bottom:12px;color:var(--ink)}
  .about ul li::before{content:"✓";position:absolute;left:0;top:0;color:#fff;background:var(--green);width:20px;height:20px;border-radius:50%;font-size:12px;display:flex;align-items:center;justify-content:center;font-weight:700}

  /* CONTACT */
  .contact{background:linear-gradient(135deg,#16263b,#1d3b5c);color:#fff}
  .contact .grid2{display:grid;grid-template-columns:1fr 1fr;gap:48px}
  .contact h2.title{color:#fff}
  .contact .lead{color:#bccadb}
  .cinfo{margin-top:28px;display:flex;flex-direction:column;gap:20px}
  .cinfo .row{display:flex;gap:14px;align-items:flex-start}
  .cinfo svg{width:22px;height:22px;stroke:#ff6b76;flex-shrink:0;margin-top:3px}
  .cinfo .lbl{font-size:13px;color:#9fb0c4}
  .cinfo .val{font-size:17px;font-weight:600}
  form{background:#fff;border-radius:var(--radius);padding:30px;color:var(--ink)}
  form h3{font-size:20px;margin-bottom:6px}
  form .fsub{color:var(--muted);font-size:14px;margin-bottom:20px}
  form a {color:var(--red)}
  .field{margin-bottom:16px}
  .field label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--ink-2)}
  .field input,.field textarea,.field select{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:9px;font-size:15px;font-family:inherit;transition:.2s;background:#fff}
  .field input:focus,.field textarea:focus,.field select:focus, .custom-checkbox input:focus{outline:none;border-color:var(--red);box-shadow:0 0 0 3px rgba(193,18,31,.1)}
  .field textarea{resize:vertical;min-height:90px}
  .form-note{font-size:12px;color:var(--muted);margin-top:12px}

  /* FOOTER */
  footer{background:#0f1c2c;color:#9fb0c4;padding:50px 0 26px;font-size:14px}
  .foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px;margin-bottom:34px}
  footer img{height:38px;margin-bottom:14px;background:#fff;padding:6px 8px;border-radius:6px}
  footer h4{color:#fff;font-size:15px;margin-bottom:14px}
  footer a{display:block;margin-bottom:8px;transition:.2s}
  footer a:hover{color:#fff}
  .foot-bottom{border-top:1px solid #1f3147;padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:13px;color:#6f8093}

  /* data tables */
  .tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);margin-top:24px}
  table.dtable{border-collapse:collapse;width:100%;min-width:560px;font-size:14.5px}
  table.dtable th,table.dtable td{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line)}
  table.dtable thead th{background:var(--ink);color:#fff;font-weight:600;white-space:nowrap}
  table.dtable tbody tr:nth-child(even){background:var(--bg)}
  table.dtable td:first-child,table.dtable th:first-child{font-weight:600;color:var(--ink-2)}
  table.dtable .grp td{background:var(--bg-soft);font-weight:700;color:var(--red)}
  /* lightbox */
  img.zoom{cursor:zoom-in}
  .lb{position:fixed;inset:0;background:rgba(10,15,22,.92);display:none;align-items:center;justify-content:center;z-index:200;cursor:zoom-out;padding:30px}
  .lb.open{display:flex}
  .lb img{max-width:95%;max-height:92%;border-radius:8px;box-shadow:0 20px 60px rgba(0,0,0,.5)}
  /* responsive */
  @media(max-width:920px){
    .hero .wrap{grid-template-columns:1fr;gap:34px}
    .features,.apps{grid-template-columns:repeat(2,1fr)}
    .products,.about,.contact .grid2,.foot-grid{grid-template-columns:1fr}
    .about .pic{order:-1}
  }
  @media(max-width:680px){
    .menu,.nav-phone span{display:none}
    .nav-phone{font-size:14px}
    .burger{display:flex}
    .menu.open{display:flex;position:absolute;top:74px;left:0;right:0;background:#fff;flex-direction:column;padding:18px 22px;gap:16px;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
    .menu.open a{display:block}
    .features,.apps{grid-template-columns:1fr}
    .sec{padding:54px 0}
    .hero-badges{gap:18px}
  }