:root{--gold:#f6b800;--ink:#101820;--muted:#63707c;--paper:#f5f6f4;--white:#fff;--line:#e3e6e2}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,Arial,sans-serif;color:var(--ink);background:var(--white)}
a{text-decoration:none;color:inherit}
img{max-width:100%}

/* ---------- header ---------- */
header{position:fixed;z-index:20;top:0;width:100%;height:82px;display:flex;align-items:center;padding:0 5vw;gap:32px;transition:.3s;background:linear-gradient(#0008,transparent)}
header.solid{background:#101820f5;box-shadow:0 6px 30px #0002}
header.static{position:sticky}
.logo img{width:150px;filter:drop-shadow(0 2px 6px #0006)}
nav#nav{display:flex;gap:26px;margin-left:auto}
nav#nav a{color:#fff;font-size:14px;font-weight:700}
nav#nav a.on{color:var(--gold)}
.lang-switch{color:#fff;font-size:13px;font-weight:800;border:1px solid #ffffff55;border-radius:4px;padding:8px 12px;letter-spacing:.08em}
.lang-switch:hover{border-color:var(--gold);color:var(--gold)}
.quote,.cta{background:var(--gold);padding:14px 22px;border-radius:4px;font-weight:800;display:inline-flex;gap:14px;align-items:center;color:var(--ink)}
.quote{font-size:13px}
.cta.dark{background:var(--ink);color:#fff}
#menu{display:none;background:none;border:0;color:#fff;font-size:27px;cursor:pointer}

/* ---------- hero ---------- */
.hero{height:100svh;min-height:650px;max-height:950px;position:relative;display:flex;align-items:center;color:#fff;overflow:hidden}
.hero-bg{position:absolute;inset:0;background:url('assets/busbar.jpg') center/cover}
.hero-shade{position:absolute;inset:0;background:linear-gradient(90deg,#0b131dde 0%,#0b131d75 48%,#0b131d25),linear-gradient(0deg,#0b131d80,transparent 50%)}
.hero-copy{position:relative;z-index:2;max-width:820px;margin-left:8vw;padding-right:5vw}
.eyebrow{font-size:11px;letter-spacing:.2em;text-transform:uppercase;font-weight:900}
.eyebrow.gold{color:#b8890a}
.hero .eyebrow{color:var(--gold)}
.hero h1{font-size:clamp(48px,7.4vw,98px);line-height:.9;margin:22px 0;font-weight:900;letter-spacing:-.05em;text-transform:uppercase}
.hero h1 em{font-style:normal;color:var(--gold)}
.hero p{font-size:18px;line-height:1.6;max-width:580px;color:#e6e8e8;margin-bottom:35px}
.scroll{position:absolute;z-index:2;bottom:25px;left:50%;transform:translateX(-50%);font-size:10px;letter-spacing:.2em;color:#fff}

/* ---------- stats ---------- */
.stats{display:grid;grid-template-columns:repeat(5,1fr);background:var(--gold);padding:45px 5vw;gap:10px}
.stats div{text-align:center;border-right:1px solid #10182033;padding:0 8px}
.stats div:last-child{border:0}
.stats strong{font-size:38px;display:block;letter-spacing:-.03em}
.stats span{text-transform:uppercase;font-size:10.5px;letter-spacing:.12em;font-weight:700;color:#101820c9}
.stats.inner{border-radius:8px;margin:40px 0}

/* ---------- sections ---------- */
.section{padding:90px 8vw}
.intro{display:grid;grid-template-columns:1fr 1.15fr;gap:60px;align-items:start}
h2{font-size:clamp(30px,3.6vw,46px);line-height:1.06;letter-spacing:-.03em;margin:14px 0 18px}
.intro p,.section-head p{font-size:16.5px;line-height:1.75;color:var(--muted)}
.intro p b{color:var(--ink)}
.section-head{max-width:760px;margin-bottom:44px}

/* ---------- products grid ---------- */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:34px}
.filters button{border:1px solid var(--line);background:#fff;padding:11px 20px;border-radius:99px;font-weight:700;font-size:13.5px;cursor:pointer;color:var(--muted)}
.filters button.active{background:var(--ink);border-color:var(--ink);color:#fff}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:26px}
.grid.small{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
.card{display:flex;flex-direction:column;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#fff;transition:.25s;color:inherit}
.card:hover{transform:translateY(-4px);box-shadow:0 18px 44px #10182018;border-color:#d8dcd6}
.card figure{margin:0;height:230px;background:var(--paper);display:flex;align-items:center;justify-content:center;overflow:hidden}
.card.small figure{height:170px}
.card figure img{width:100%;height:100%;object-fit:cover}
.card .body{padding:22px;display:flex;flex-direction:column;gap:9px;flex:1}
.card h3{margin:0;font-size:17px;line-height:1.35;letter-spacing:-.01em}
.card p{margin:0;color:var(--muted);font-size:13.5px;line-height:1.6;flex:1}
.spec{display:flex;gap:6px;flex-wrap:wrap}
.spec span{font-size:11.5px;font-weight:800;background:#f6b80022;color:#8a6a00;border:1px solid #f6b80055;padding:4px 9px;border-radius:4px}

/* ---------- catalog band ---------- */
.catalog-band{margin-top:52px;background:var(--gold);border-radius:10px;padding:42px 46px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.catalog-band h3{margin:10px 0 8px;font-size:24px}
.catalog-band p{margin:0;color:#101820b0;max-width:480px}

/* ---------- trust ---------- */
.trust{background:var(--paper)}
.trust-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.trust-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:28px;border-top:3px solid var(--gold)}
.trust-card h3{margin:0 0 14px;font-size:18px}
.trust-card ul{margin:0;padding:0;list-style:none}
.trust-card li{padding:8px 0 8px 24px;position:relative;color:var(--muted);font-size:14.5px;line-height:1.5;border-bottom:1px solid #f0f1ee}
.trust-card li:last-child{border:0}
.trust-card li:before{content:'✓';position:absolute;left:0;color:#b8890a;font-weight:900}
.trust-card p{color:var(--muted);font-size:14.5px;line-height:1.7;margin:0}
.trust-photo{margin:34px 0 0;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.trust-photo img{width:100%;height:240px;object-fit:cover;border-radius:10px}

/* ---------- process ---------- */
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.step{border:1px solid var(--line);border-radius:10px;padding:28px}
.step span{font-size:13px;font-weight:900;color:#b8890a;letter-spacing:.15em}
.step h3{font-size:17px;margin:12px 0 10px}
.step p{margin:0;color:var(--muted);font-size:14px;line-height:1.65}

/* ---------- refs teaser ---------- */
.refs-teaser{background:var(--ink);color:#fff;padding:80px 8vw;background-image:linear-gradient(#101820e8,#101820e8),url('assets/insulator.jpg');background-size:cover;background-position:center}
.refs-teaser .eyebrow{color:var(--gold)}
.refs-teaser p{color:#aeb6bd;max-width:620px;line-height:1.7;margin-bottom:30px}

/* ---------- contact / form ---------- */
.contact-panel{display:grid;grid-template-columns:1fr 1.2fr;gap:60px;background:var(--paper)}
.contact-panel .lead,.contact-panel p{color:var(--muted);line-height:1.7}
.contact-action{margin:22px 0}
.contact-action a{font-size:22px;font-weight:800;border-bottom:2px solid var(--gold)}
.addr{font-size:14px}
.quote-form{background:#fff;border:1px solid var(--line);border-radius:12px;padding:32px}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.quote-form label{display:block;font-size:12.5px;font-weight:800;letter-spacing:.04em;color:var(--muted);margin-bottom:16px}
.quote-form input,.quote-form textarea{display:block;width:100%;margin-top:7px;padding:12px 14px;border:1px solid var(--line);border-radius:6px;font:inherit;font-size:14.5px;background:var(--paper)}
.quote-form input:focus,.quote-form textarea:focus{outline:2px solid var(--gold);background:#fff}
.quote-form .cta{border:0;cursor:pointer;font-size:15px}
.form-note{font-size:12.5px;color:var(--muted);margin:14px 0 0}
.form-thanks{margin:14px 0 0;padding:12px 16px;background:#e8f6e4;border:1px solid #bfe3b5;border-radius:6px;color:#2c6b1e;font-weight:700;font-size:14px}

/* ---------- product page ---------- */
.product-page{padding:0 8vw 60px}
.breadcrumbs{padding:26px 0 8px;font-size:13px;color:var(--muted)}
.breadcrumbs a{color:var(--muted);border-bottom:1px dotted #bbb}
.product-hero{display:grid;grid-template-columns:1fr 1.1fr;gap:54px;align-items:center;padding:26px 0 50px;border-bottom:1px solid var(--line)}
.product-hero figure{margin:0;background:var(--paper);border-radius:12px;overflow:hidden;display:grid;gap:2px}
.product-hero figure img{width:100%;max-height:430px;object-fit:cover}
.product-hero h1{font-size:clamp(28px,3.2vw,42px);line-height:1.08;letter-spacing:-.03em;margin:14px 0 16px}
.product-hero .lead{font-size:17px;line-height:1.7;color:var(--muted);margin-bottom:20px}
.product-hero .spec{margin-bottom:28px}
.product-body{display:grid;grid-template-columns:1.5fr 1fr;gap:54px;padding:50px 0}
.product-text p{font-size:16px;line-height:1.8;color:#3c4650;margin:0 0 18px}
.aside-box{border:1px solid var(--line);border-left:3px solid var(--gold);border-radius:8px;padding:22px 24px;margin-bottom:20px}
.aside-box h3{margin:0 0 12px;font-size:15.5px}
.aside-box ul{margin:0;padding:0;list-style:none}
.aside-box li{padding:6px 0 6px 20px;position:relative;color:var(--muted);font-size:14px;line-height:1.5}
.aside-box li:before{content:'—';position:absolute;left:0;color:#b8890a;font-weight:900}
.std{display:flex;gap:6px;flex-wrap:wrap}
.std span{font-size:11.5px;font-weight:700;background:var(--paper);border:1px solid var(--line);padding:4px 9px;border-radius:4px;color:var(--muted)}
.product-specs h2,.product-quote h2,.related h2{font-size:26px;margin:0 0 24px}
.product-specs{padding:10px 0 50px}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px}
table{border-collapse:collapse;width:100%;min-width:560px;font-size:14px}
thead th{background:var(--ink);color:#fff;text-align:left;padding:13px 16px;font-size:13px;letter-spacing:.03em;white-space:nowrap}
tbody th{text-align:left;padding:12px 16px;background:var(--paper);font-weight:700;width:34%;border-bottom:1px solid var(--line)}
tbody td{padding:12px 16px;border-bottom:1px solid var(--line);color:#3c4650}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:0}
.product-quote{background:var(--paper);border-radius:12px;padding:44px;margin-bottom:56px}
.related{padding-bottom:20px}

/* ---------- inner pages ---------- */
.page-main{padding:30px 8vw 70px}
.page-main.narrow{max-width:840px}
.page-head{padding:26px 0 10px;max-width:800px}
.page-head h1{font-size:clamp(32px,4vw,52px);letter-spacing:-.03em;line-height:1.05;margin:14px 0 18px}
.page-head .lead{font-size:17.5px;line-height:1.75;color:var(--muted)}
.ref-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin:36px 0}
.trust-photo.wide img{height:280px}
.ua-refs{margin-top:20px;border:1px solid var(--line);border-radius:12px;padding:40px}
.ua-refs h2{margin-top:0}
.ua-refs p{color:var(--muted);line-height:1.7;margin-bottom:26px}
.ua-refs a[href^="mailto"]{border-bottom:2px solid var(--gold);font-weight:700}
.legal h1{font-size:36px;letter-spacing:-.02em}
.legal h2{font-size:20px;margin-top:34px}
.legal p{line-height:1.75;color:#3c4650}
.legal a{border-bottom:2px solid var(--gold);font-weight:700}

/* ---------- footer ---------- */
footer{background:var(--ink);color:#c6ccd2}
.footer-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr 1fr;gap:38px;padding:64px 8vw}
.footer-top img{width:140px;margin-bottom:14px}
.footer-top p{font-size:13.5px;line-height:1.65;color:#8b949c;margin:0}
.footer-top h4{color:#fff;font-size:13px;letter-spacing:.1em;text-transform:uppercase;margin:0 0 14px}
.footer-top a{display:block;font-size:14px;padding:4px 0;color:#c6ccd2}
.footer-top a:hover{color:var(--gold)}
.copyright{border-top:1px solid #ffffff14;padding:22px 8vw;font-size:12.5px;color:#8b949c}

/* ---------- responsive ---------- */
@media(max-width:1080px){
  .stats{grid-template-columns:repeat(3,1fr);row-gap:30px}
  .stats div:nth-child(3n){border-right:0}
  .process-grid,.trust-grid,.ref-grid{grid-template-columns:1fr 1fr}
  .footer-top{grid-template-columns:1fr 1fr}
}
@media(max-width:860px){
  nav#nav{position:fixed;inset:82px 0 auto 0;background:#101820f8;flex-direction:column;padding:20px 5vw 26px;gap:18px;display:none}
  nav#nav.open{display:flex}
  #menu{display:block;order:5}
  .quote{display:none}
  .intro,.contact-panel,.product-hero,.product-body{grid-template-columns:1fr;gap:34px}
  .section{padding:64px 6vw}
  .form-grid{grid-template-columns:1fr}
  .trust-photo{grid-template-columns:1fr}
  .trust-photo img{height:200px}
  .catalog-band{padding:32px}
  .product-quote{padding:28px}
}
@media(max-width:560px){
  .stats{grid-template-columns:1fr 1fr}
  .stats div{border-right:0}
  .stats strong{font-size:30px}
  .stats span{font-size:9.5px}
  .hero h1{font-size:clamp(34px,10.5vw,48px)}
  .hero-copy{margin-left:6vw;min-width:0}
  .process-grid,.trust-grid,.ref-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
}
body{overflow-x:hidden}
.hero-copy{min-width:0}