:root{
  --steel:#0f2438;--steel-2:#16344f;--accent:#f5a623;--accent-2:#ffba33;
  --ink:#1a2533;--muted:#5b6b7d;--line:#e3e8ee;--bg:#fff;--bg-soft:#f4f7fa;
  --radius:14px;--shadow:0 10px 30px rgba(15,36,56,.08);--shadow-lg:0 20px 50px rgba(15,36,56,.14);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Segoe UI",Roboto,"Helvetica Neue",Arial,system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3{font-family:"Segoe UI Semibold","Segoe UI",Arial,sans-serif;line-height:1.15;color:var(--steel)}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:1180px;margin:0 auto;padding:0 24px}
.accent{color:var(--accent)}
.btn{display:inline-block;padding:14px 28px;border-radius:8px;font-weight:600;font-size:15px;transition:transform .15s,box-shadow .15s,background .2s;cursor:pointer;border:none}
.btn-primary{background:var(--accent);color:#1a1a1a}
.btn-primary:hover{background:var(--accent-2);transform:translateY(-2px);box-shadow:0 8px 20px rgba(245,166,35,.4)}
.btn-ghost{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.5)}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:#fff}
.btn-dark{background:var(--steel);color:#fff}
.btn-dark:hover{background:var(--steel-2);transform:translateY(-2px)}
.eyebrow{text-transform:uppercase;letter-spacing:2.5px;font-size:13px;font-weight:700;color:var(--accent)}

/* Header */
header{position:sticky;top:0;z-index:50;background:rgba(15,36,56,.96);backdrop-filter:blur(8px);border-bottom:1px solid rgba(255,255,255,.08)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:20px;letter-spacing:.3px}
.logo .mark{width:34px;height:34px;border-radius:7px;background:var(--accent);display:grid;place-items:center;color:#0f2438;font-weight:900;font-size:18px}
.nav-links{display:flex;gap:30px;align-items:center}
.nav-links a{color:#cfd9e3;font-size:15px;font-weight:500;transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:#fff}
.nav-cta{background:var(--accent);color:#1a1a1a !important;padding:10px 20px;border-radius:7px;font-weight:600}
.nav-cta:hover{background:var(--accent-2)}
.burger{display:none;flex-direction:column;gap:5px;cursor:pointer}
.burger span{width:26px;height:3px;background:#fff;border-radius:2px}

/* Hero (home) */
.hero{position:relative;color:#fff;background:linear-gradient(100deg,rgba(15,36,56,.94) 30%,rgba(15,36,56,.55) 75%),url('https://sc02.alicdn.com/kf/A33a12d84f6514e7d97c8f760e4540b6eW.png') center/cover no-repeat}
.hero-inner{padding:110px 0 120px;max-width:680px}
.hero h1{font-size:54px;font-weight:800;color:#fff;margin:18px 0 20px}
.hero p{font-size:19px;color:#d3dde7;margin-bottom:34px;max-width:560px}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap}
.hero-stats{display:flex;gap:46px;margin-top:60px;flex-wrap:wrap}
.hero-stats .num{font-size:34px;font-weight:800;color:var(--accent)}
.hero-stats .lbl{font-size:14px;color:#aebccb}

/* Page banner (inner pages) */
.page-banner{background:linear-gradient(100deg,var(--steel),var(--steel-2));color:#fff;padding:70px 0 60px}
.page-banner h1{color:#fff;font-size:42px;margin-bottom:12px}
.page-banner p{color:#c4d0dc;font-size:17px;max-width:640px}
.crumb{font-size:13px;color:#8fa3b6;margin-bottom:18px}
.crumb a:hover{color:var(--accent)}

/* Trust */
.trust{background:var(--steel-2);padding:18px 0}
.trust .container{display:flex;align-items:center;justify-content:center;gap:40px;flex-wrap:wrap;color:#9fb1c2;font-size:14px;font-weight:600}
.trust b{color:#fff}

/* Section */
section.block{padding:90px 0}
.block.soft{background:var(--bg-soft)}
.sec-head{text-align:center;max-width:680px;margin:0 auto 56px}
.sec-head h2{font-size:38px;font-weight:800;margin:12px 0 14px}
.sec-head p{color:var(--muted);font-size:17px}

/* Products grid */
.grid{display:grid;gap:26px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.pcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s}
.pcard:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.pcard .img{height:210px;background:var(--bg-soft) center/cover no-repeat}
.pcard .body{padding:24px}
.pcard h3{font-size:21px;margin-bottom:8px}
.pcard p{color:var(--muted);font-size:15px;margin-bottom:16px}
.pcard .more{color:var(--steel);font-weight:700;font-size:14px}
.pcard .more:after{content:" \2192";color:var(--accent)}
.pcard.text-only{display:flex;flex-direction:column;justify-content:center;align-items:flex-start;padding:30px;background:var(--steel);color:#fff}
.pcard.text-only h3{color:#fff}.pcard.text-only p{color:#c0ccd8}

/* Why us */
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.feature{background:#fff;border-radius:var(--radius);padding:30px 26px;border:1px solid var(--line)}
.feature .ico{width:50px;height:50px;border-radius:10px;background:rgba(245,166,35,.15);display:grid;place-items:center;font-size:24px;margin-bottom:16px}
.feature h3{font-size:18px;margin-bottom:8px}
.feature p{color:var(--muted);font-size:14px}

/* Applications */
.apps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.app{position:relative;border-radius:var(--radius);overflow:hidden;height:200px;color:#fff;display:flex;align-items:flex-end;padding:22px;font-weight:700;font-size:18px;background-image:linear-gradient(transparent 30%,rgba(15,36,56,.85))}
.app.a1{background-color:#1d3a55}.app.a2{background-color:#22405d}.app.a3{background-color:#1a3450}.app.a4{background-color:#244563}

/* Product detail */
.pd{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:start}
.pd .gallery{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--bg-soft)}
.pd .gallery img{width:100%;height:auto}
.pd h2{font-size:32px;margin-bottom:14px}
.pd .lead{color:var(--muted);font-size:16px;margin-bottom:22px}
.pd ul.feat{list-style:none;display:grid;gap:10px;margin-bottom:26px}
.pd ul.feat li{display:flex;gap:10px;color:var(--ink);font-size:15px}
.pd ul.feat li:before{content:"\2713";color:var(--accent);font-weight:900}
table.spec{width:100%;border-collapse:collapse;margin:14px 0 28px;font-size:15px}
table.spec th,table.spec td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line)}
table.spec th{background:var(--bg-soft);color:var(--steel);width:42%;font-weight:600}
.tag{display:inline-block;background:rgba(245,166,35,.15);color:#a96f00;font-size:12px;font-weight:700;padding:5px 12px;border-radius:20px;margin-bottom:14px;text-transform:uppercase;letter-spacing:1px}

/* About stats / content */
.about-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:50px;align-items:center}
.about-grid img{border-radius:var(--radius);box-shadow:var(--shadow)}
.about-grid h2{font-size:34px;margin-bottom:16px}
.about-grid p{color:var(--muted);margin-bottom:14px}
.statbar{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:10px}
.statbar .s{text-align:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 12px}
.statbar .num{font-size:34px;font-weight:800;color:var(--accent)}
.statbar .lbl{font-size:13px;color:var(--muted)}

/* Quote / form */
.quote{background:linear-gradient(120deg,var(--steel),var(--steel-2));color:#fff}
.quote-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center}
.quote h2{color:#fff;font-size:36px;margin-bottom:16px}
.quote p{color:#c4d0dc;font-size:16px;margin-bottom:24px}
.qlist{list-style:none;display:grid;gap:12px}
.qlist li{display:flex;gap:10px;align-items:center;color:#dbe4ed;font-size:15px}
.qlist li:before{content:"\2713";color:var(--accent);font-weight:900}
form{background:#fff;border-radius:16px;padding:34px;box-shadow:var(--shadow-lg)}
form h3{color:var(--steel);font-size:22px;margin-bottom:6px}
form .sub{color:var(--muted);font-size:14px;margin-bottom:22px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:6px}
.field input,.field textarea,.field select{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:8px;font-size:15px;font-family:inherit;color:var(--ink);background:#fbfcfd;transition:border .2s,box-shadow .2s}
.field input:focus,.field textarea:focus,.field select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(245,166,35,.18);background:#fff}
.field textarea{resize:vertical;min-height:90px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
form .btn-primary{width:100%;margin-top:6px;font-size:16px}
form .note{text-align:center;font-size:12px;color:var(--muted);margin-top:12px}

/* contact info cards */
.cinfo{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:50px}
.cinfo .c{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;text-align:center}
.cinfo .c .ico{font-size:30px;margin-bottom:10px}
.cinfo .c h3{font-size:17px;margin-bottom:6px}
.cinfo .c p{color:var(--muted);font-size:14px}
.map{height:340px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--bg-soft) center/cover;display:grid;place-items:center;color:var(--muted);font-size:15px;background-image:linear-gradient(135deg,#e9eef4,#dde6ef)}

/* Footer */
footer{background:#0b1c2d;color:#9fb1c2;padding:64px 0 28px}
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:40px;margin-bottom:40px}
footer .logo{margin-bottom:14px}
footer p{font-size:14px;line-height:1.7}
footer h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.4px}
footer ul{list-style:none;display:grid;gap:9px}
footer ul a{font-size:14px;color:#9fb1c2}
footer ul a:hover{color:var(--accent)}
.foot-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:13px;color:#7c8da0}

/* Responsive */
@media(max-width:900px){
  .nav-links{display:none}.burger{display:flex}
  .hero h1{font-size:38px}.hero-inner{padding:70px 0 80px}
  .grid-3,.why-grid{grid-template-columns:1fr 1fr}
  .apps,.cinfo{grid-template-columns:1fr 1fr}
  .quote-grid,.pd,.about-grid{grid-template-columns:1fr;gap:36px}
  .foot-grid{grid-template-columns:1fr 1fr;gap:30px}
  .statbar{grid-template-columns:1fr 1fr}
  .page-banner h1{font-size:32px}
}
@media(max-width:560px){
  .hero h1{font-size:31px}
  .grid-3,.why-grid,.apps,.foot-grid,.row2,.grid-2,.cinfo,.statbar{grid-template-columns:1fr}
  .sec-head h2,.quote h2{font-size:28px}
  .hero-stats{gap:28px}
}