:root{
  --dark:#0b1220;
  --dark-2:#101a2e;
  --accent:#f5a623;
  --accent-2:#e08e00;
  --green:#22c55e;
  --text:#1f2937;
  --muted:#5b6472;
  --line:#e5e9f0;
  --bg:#ffffff;
  --bg-soft:#f5f7fa;
  --radius:14px;
  --shadow:0 10px 30px rgba(11,18,32,.08);
  --container:1180px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans",sans-serif;color:var(--text);background:var(--bg);line-height:1.65;font-size:16px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 20px}
.section{padding:72px 0}
.section.soft{background:var(--bg-soft)}
.section.dark{background:var(--dark);color:#e7ecf3}
h1,h2,h3,h4{line-height:1.25;font-weight:700}
.section-title{font-size:32px;margin-bottom:14px;color:var(--dark)}
.section.dark .section-title{color:#fff}
.section-sub{color:var(--muted);max-width:760px;margin-bottom:40px}
.section.dark .section-sub{color:#aab6c8}
.kicker{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);margin-bottom:10px}

/* Buttons */
.btn{display:inline-block;padding:14px 28px;border-radius:10px;font-weight:700;font-size:15px;transition:.2s;cursor:pointer;border:0}
.btn-primary{background:var(--accent);color:#141414}
.btn-primary:hover{background:var(--accent-2);transform:translateY(-2px)}
.btn-ghost{border:2px solid rgba(255,255,255,.6);color:#fff}
.btn-ghost:hover{background:#fff;color:var(--dark)}
.btn-dark{background:var(--dark);color:#fff}
.btn-dark:hover{background:#22304a}
.btn-sm{padding:10px 20px;font-size:14px}

/* Header */
.topbar{background:var(--dark);color:#9fb0c6;font-size:13px;padding:8px 0}
.topbar .container{display:flex;justify-content:space-between;gap:16px}
header.site{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);box-shadow:0 2px 12px rgba(11,18,32,.05)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo img{height:44px;width:auto}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{padding:10px 16px;font-weight:600;font-size:15px;color:#26313f;border-radius:8px;transition:.15s}
.nav-links a:hover{background:var(--bg-soft);color:var(--accent-2)}
.nav-links a.active{color:var(--accent-2)}
.nav-cta{margin-left:10px}
.burger{display:none;background:none;border:0;cursor:pointer;padding:8px}
.burger span{display:block;width:26px;height:3px;background:var(--dark);margin:5px 0;border-radius:2px;transition:.2s}

/* Hero */
.hero{position:relative;background:var(--dark);color:#fff;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:url(/img/banner.jpg) center/cover no-repeat;opacity:.55}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(11,18,32,.92) 10%,rgba(11,18,32,.55) 55%,rgba(11,18,32,.25))}
.hero .container{position:relative;z-index:2;padding-top:110px;padding-bottom:120px;max-width:var(--container)}
.hero h1{font-size:46px;max-width:720px;margin-bottom:20px}
.hero p{font-size:19px;color:#d4dcea;max-width:640px;margin-bottom:34px}
.hero .btn + .btn{margin-left:12px}
.hero-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:38px}
.hero-badges span{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);padding:8px 16px;border-radius:999px;font-size:14px;color:#e7ecf3}

/* Page hero (inner pages) */
.page-hero{background:linear-gradient(100deg,var(--dark) 0%,#1a2a47 100%);color:#fff;padding:64px 0}
.page-hero h1{font-size:38px;margin-bottom:10px}
.page-hero p{color:#aab6c8;max-width:720px;font-size:17px}
.breadcrumbs{font-size:14px;color:#8fa0b8;margin-bottom:16px}
.breadcrumbs a{color:#c3cede}
.breadcrumbs a:hover{color:var(--accent)}

/* Stats */
.stats{background:var(--dark-2);color:#fff;padding:34px 0}
.stats .container{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.stats b{display:block;font-size:34px;color:var(--accent)}
.stats span{font-size:14px;color:#aab6c8}

/* Grids & cards */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:26px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.2s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:0 16px 40px rgba(11,18,32,.13)}
.card .thumb{aspect-ratio:4/3;overflow:hidden;background:#fff}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:.3s}
.card:hover .thumb img{transform:scale(1.04)}
.card .body{padding:22px;flex:1;display:flex;flex-direction:column}
.card h3{font-size:19px;margin-bottom:8px;color:var(--dark)}
.card p{color:var(--muted);font-size:14.5px;flex:1}
.card .more{margin-top:16px;font-weight:700;color:var(--accent-2);font-size:14px}
.tag{display:inline-block;background:#fff3dc;color:#9a6a00;font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px;margin-bottom:10px}
.ico-card{padding:28px;border-radius:var(--radius);background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
.ico-card .num{font-size:13px;font-weight:800;color:var(--accent);letter-spacing:.1em}
.ico-card h3{margin:8px 0 10px;font-size:19px;color:var(--dark)}
.ico-card p{font-size:14.5px;color:var(--muted)}

/* Split blocks */
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.split img{border-radius:var(--radius);box-shadow:var(--shadow);width:100%}
.checklist li{position:relative;padding-left:30px;margin-bottom:12px;color:#3a4557}
.checklist li::before{content:"✓";position:absolute;left:0;top:0;width:20px;height:20px;background:var(--green);color:#fff;font-size:12px;font-weight:800;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-top:4px}
.section.dark .checklist li{color:#c8d2e0}

/* CTA band */
.cta-band{background:linear-gradient(100deg,var(--accent) 0%,#ff8a3d 100%);color:#161616;padding:56px 0}
.cta-band .container{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
.cta-band h2{font-size:28px;margin-bottom:6px}
.cta-band p{font-weight:500}
.cta-band .btn{background:var(--dark);color:#fff}
.cta-band .btn:hover{background:#22304a}

/* Products page */
.series-title{font-size:24px;color:var(--dark);margin:44px 0 22px;padding-bottom:12px;border-bottom:2px solid var(--accent);display:inline-block}

/* Product detail */
.pd-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:44px;align-items:start}
.pd-grid .pic{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;box-shadow:var(--shadow)}
.pd-grid h1{font-size:32px;color:var(--dark);margin:6px 0 14px}
.pd-lede{color:var(--muted);font-size:16.5px;margin-bottom:20px}
.spec-mini{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:20px 0}
.spec-mini div{background:var(--bg-soft);border-radius:10px;padding:12px 16px}
.spec-mini b{display:block;color:var(--dark);font-size:15px}
.spec-mini span{font-size:13px;color:var(--muted)}
.pd-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:6px}
.spec-table{width:100%;border-collapse:collapse;margin-top:18px}
.spec-table th,.spec-table td{text-align:left;padding:13px 16px;border-bottom:1px solid var(--line);font-size:15px}
.spec-table th{width:38%;color:var(--muted);font-weight:600;background:var(--bg-soft)}
.spec-table td{font-weight:600;color:var(--dark)}
.prose h2{font-size:26px;color:var(--dark);margin:38px 0 14px}
.prose h3{font-size:19px;color:var(--dark);margin:26px 0 10px}
.prose p{margin-bottom:14px;color:#3a4557}
.prose ul{margin:0 0 16px}
.prose ul li{position:relative;padding-left:26px;margin-bottom:10px;color:#3a4557}
.prose ul li::before{content:"—";position:absolute;left:0;color:var(--accent);font-weight:800}

/* FAQ */
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;margin-bottom:14px;overflow:hidden}
.faq-item summary{cursor:pointer;font-weight:700;font-size:17px;color:var(--dark);padding:20px 56px 20px 22px;position:relative;list-style:none}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:24px;color:var(--accent);font-weight:400}
.faq-item[open] summary::after{content:"–"}
.faq-item .faq-body{padding:0 22px 20px;color:var(--muted)}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:48px;align-items:start}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:34px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:16px}
.field label{display:block;font-weight:600;font-size:14px;margin-bottom:6px;color:var(--dark)}
.field label em{color:#d33;font-style:normal}
.field input,.field select,.field textarea{width:100%;padding:13px 14px;border:1px solid #cfd6e0;border-radius:9px;font-size:15px;font-family:inherit;background:#fbfcfe;transition:.15s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px rgba(245,166,35,.15)}
.field textarea{min-height:130px;resize:vertical}
.form-note{font-size:13px;color:var(--muted);margin-top:12px}
.hp{position:absolute;left:-9999px}
.alert-ok{background:#e8f9ee;border:1px solid #b5e8c8;color:#177a3d;padding:14px 18px;border-radius:10px;margin-bottom:18px;font-weight:600}
.alert-err{background:#fdecec;border:1px solid #f5c2c2;color:#a33030;padding:14px 18px;border-radius:10px;margin-bottom:18px;font-weight:600}

/* Footer */
footer.site{background:var(--dark);color:#93a2b8;padding:56px 0 0;font-size:14.5px}
footer.site h4{color:#fff;font-size:16px;margin-bottom:16px}
footer.site a:hover{color:var(--accent)}
.f-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;padding-bottom:40px}
.f-grid li{margin-bottom:9px}
.f-bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:13px}

/* Responsive */
@media(max-width:1024px){
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .f-grid{grid-template-columns:1fr 1fr}
  .hero h1{font-size:38px}
  .stats .container{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:760px){
  .grid-3,.grid-2,.split,.pd-grid,.contact-grid{grid-template-columns:1fr}
  .section{padding:52px 0}
  .hero .container{padding-top:70px;padding-bottom:80px}
  .hero h1{font-size:30px}
  .hero p{font-size:16px}
  .section-title{font-size:26px}
  .page-hero h1{font-size:29px}
  .form-row{grid-template-columns:1fr}
  .nav-links{position:fixed;top:72px;right:-100%;width:min(320px,86vw);height:calc(100vh - 72px);background:#fff;flex-direction:column;align-items:flex-start;padding:24px;gap:4px;box-shadow:-8px 0 30px rgba(11,18,32,.15);transition:right .25s}
  .nav-links.open{right:0}
  .nav-links a{width:100%}
  .burger{display:block}
  .topbar .container span:last-child{display:none}
}