:root{
  --bg:#f4f5f6;
  --surface:#ffffff;
  --surface-soft:#fafafa;
  --ink:#142131;
  --ink-soft:#536172;
  --line:#d9dce1;
  --line-strong:#c3c8d0;
  --shadow:0 16px 36px rgba(20,33,49,.08);
  --shadow-lg:0 18px 44px rgba(20,33,49,.12);
  --metal-1:#f3f3f4;
  --metal-2:#e7e8ea;
  --metal-3:#d9dde1;
  --metal-border:#c8cdd3;
  --orange:#f07a00;
  --orange-dark:#ca5d00;
  --green:#0f7d2d;
  --green-dark:#08551d;
  --radius:24px;
  --radius-md:18px;
  --radius-sm:14px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.55}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
iframe{max-width:100%}
.container{width:min(1240px,calc(100% - 32px));margin:0 auto}
.site-header{position:sticky;top:0;z-index:40;background:linear-gradient(180deg,var(--metal-1),var(--metal-2) 55%,var(--metal-1));border-bottom:1px solid var(--metal-border);box-shadow:0 10px 24px rgba(0,0,0,.05)}
.header-row{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:22px;min-height:88px}
.header-left{display:flex;align-items:center;gap:14px;min-width:0}
.header-logo{display:flex;align-items:center;min-width:0}
.header-logo img{height:68px;width:auto;object-fit:contain;filter:drop-shadow(0 6px 16px rgba(0,0,0,.12))}
.header-contact-icons,.header-right{display:flex;align-items:center;gap:10px}
.circle-action,.lang-pill{width:42px;height:42px;border-radius:999px;border:1px solid var(--metal-border);background:linear-gradient(180deg,#ffffff,#eceff2);display:inline-flex;align-items:center;justify-content:center;box-shadow:0 10px 20px rgba(20,33,49,.08);color:var(--orange);transition:.2s ease}
.circle-action svg,.nav-link-icon svg{width:20px;height:20px}
.circle-action:hover,.lang-pill:hover{transform:translateY(-1px);background:linear-gradient(180deg,#fff7ef,#ffe3c7);border-color:#efbf8f}
.lang-switch{display:flex;align-items:center;gap:8px;padding:5px 7px;border-radius:999px;border:1px solid var(--metal-border);background:linear-gradient(180deg,#ffffff,#eceff2)}
.lang-pill{font-weight:800;font-size:.85rem;color:var(--ink);width:38px;height:38px;box-shadow:none}
.lang-pill.is-current{background:linear-gradient(180deg,var(--orange),var(--orange-dark));color:#fff;border-color:var(--orange-dark)}
.header-nav{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap}
.nav-link{display:inline-flex;align-items:center;gap:9px;padding:12px 14px;border-radius:14px;font-weight:800;color:var(--ink);transition:.2s ease}
.nav-link:hover,.nav-link.is-active{background:rgba(255,255,255,.75);color:var(--orange-dark)}
.nav-link-icon{display:inline-flex;align-items:center;justify-content:center;color:var(--orange)}
.hero-banner{position:relative;overflow:hidden;background:url('../img/hero-arkaplan.png') center/cover no-repeat;border-bottom:1px solid rgba(255,255,255,.06)}
.hero-banner::before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(7,15,25,.84),rgba(7,15,25,.72) 34%,rgba(7,15,25,.42) 62%,rgba(7,15,25,.14) 100%)}
.hero-banner .container{position:relative;z-index:1}
.hero-block{padding:56px 0 62px;max-width:760px}
.hero-block.compact{padding:48px 0 54px}
.hero-badge{display:inline-flex;align-items:center;padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.11);border:1px solid rgba(255,255,255,.22);color:#fff;font-weight:800;font-size:.9rem}
.hero-title{margin:16px 0 0;font-size:clamp(30px,4.7vw,58px);line-height:1.02;letter-spacing:-.04em;color:#fff;text-shadow:0 10px 30px rgba(0,0,0,.2)}
.hero-title span{display:block}
.hero-text{margin:16px 0 0;max-width:60ch;color:rgba(255,255,255,.9);font-size:1.02rem}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.section{padding:34px 0}
.section-head{display:flex;flex-direction:column;gap:8px;margin-bottom:18px}
.section-kicker{color:var(--orange);font-weight:800;letter-spacing:.03em;text-transform:uppercase;font-size:.88rem}
.section-title{margin:0;font-size:clamp(26px,3vw,40px);line-height:1.05;letter-spacing:-.03em}
.section-sub{margin:0;color:var(--ink-soft)}
.grid{display:grid;gap:20px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.surface,.info-card,.category-card,.doc-card,.product-card,.product-panel,.contact-card,.map-card,.about-visual,.about-copy,.related-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.surface-pad{padding:24px}
.category-card{overflow:hidden;transition:.2s ease}
.category-card:hover,.doc-card:hover,.product-card:hover,.related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg)}
.category-card-media{aspect-ratio:1/1;background:linear-gradient(180deg,#ffffff,#f2f4f7);padding:18px;border-bottom:1px solid var(--line)}
.category-card-media img{width:100%;height:100%;object-fit:cover;border-radius:18px}
.category-card-body{padding:18px}
.category-card-body h3,.doc-card-body h3,.info-card h3,.product-card h3,.related-card h3,.contact-card h3{margin:0 0 8px;font-size:1.16rem;line-height:1.25}
.category-card-body p,.doc-card-body p,.info-card p,.related-card p,.product-desc,.contact-card p,.about-copy p{margin:0;color:var(--ink-soft)}
.about-home{width:min(1080px,100%);margin:0 auto}
.about-home .grid{align-items:stretch}
.about-visual,.about-copy{overflow:hidden;height:100%}
.about-visual img{width:100%;height:100%;object-fit:cover}
.about-copy{padding:28px;display:flex;flex-direction:column;justify-content:center}
.about-copy h2{margin:0 0 10px;font-size:clamp(24px,3vw,34px)}
.about-copy h3{margin:24px 0 8px;font-size:1.14rem}
.about-copy p + p{margin-top:8px}
.info-card{padding:24px}
.info-card h3{display:flex;align-items:center;gap:10px}
.doc-card{overflow:hidden;display:flex;flex-direction:column}
.doc-card-media{aspect-ratio:1.24/1;background:linear-gradient(180deg,#f4f4f1,#ebe8de);padding:14px;border-bottom:1px solid var(--line)}
.doc-card-media img{width:100%;height:100%;object-fit:cover;border-radius:18px}
.doc-card-body{padding:20px;display:flex;flex-direction:column;gap:14px;flex:1}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 18px;border-radius:16px;border:1px solid var(--line);font-weight:800;transition:.2s ease;box-shadow:0 10px 18px rgba(20,33,49,.06)}
.btn:hover{transform:translateY(-1px)}
.btn-primary{background:linear-gradient(180deg,var(--orange),var(--orange-dark));color:#fff;border-color:var(--orange-dark)}
.btn-secondary{background:linear-gradient(180deg,#ffffff,#eff1f4);color:var(--ink);border-color:var(--line)}
.catalog-shell{padding:28px 0 40px}
.catalog-layout{display:grid;grid-template-columns:320px minmax(0,1fr);gap:22px;align-items:start}
.catalog-sidebar .surface{position:sticky;top:104px;overflow:hidden}
.sidehead{display:flex;align-items:center;gap:12px;padding:20px 22px;border-bottom:1px solid var(--line);font-weight:900;background:linear-gradient(180deg,#f9f9fa,#eef1f4)}
.sidehead .nav-link-icon{width:40px;height:40px;border-radius:14px;background:linear-gradient(180deg,#ffffff,#e9edf1);border:1px solid var(--line);justify-content:center}
.accordion{padding:10px 0}
.acc-group + .acc-group{border-top:1px solid rgba(20,33,49,.06)}
.acc-head{width:100%;border:0;background:transparent;padding:18px 22px;display:flex;align-items:center;justify-content:space-between;font:inherit;font-weight:900;color:var(--ink);cursor:pointer}
.acc-group.open .acc-head,.acc-group.current .acc-head{background:linear-gradient(180deg,#f1f3f5,#e2e6ea)}
.acc-body{display:none;padding:12px;background:#fafbfc}
.acc-group.open .acc-body{display:grid;gap:10px}
.cat-link{display:flex;align-items:center;min-height:54px;padding:0 18px;border-radius:16px;background:#fff;border:1px solid var(--line);font-weight:800;transition:.2s ease}
.cat-link::before{content:'›';font-size:1.4rem;margin-right:12px;color:#a6b0bc}
.cat-link:hover{transform:translateX(2px);border-color:#f0bf8d}
.cat-link.active{background:linear-gradient(180deg,#fff0df,#ffe1bd);border-color:#efbf8f;color:var(--orange-dark)}
.catalog-main .surface{padding:26px}
.catalog-search{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:12px;padding:16px;border:1px solid var(--line);border-radius:20px;background:linear-gradient(180deg,#ffffff,#f5f7f9)}
.catalog-search input{height:56px;border-radius:16px;border:1px solid var(--line);padding:0 18px;font:inherit;outline:none}
.catalog-search input:focus{border-color:#e3a86f;box-shadow:0 0 0 4px rgba(240,122,0,.12)}
.catalog-title{margin:22px 0 0;font-size:clamp(28px,3vw,42px);letter-spacing:-.03em;line-height:1.04;display:none}
.catalog-title.is-visible{display:block}
.catalog-title.is-visible::after{content:'';display:block;width:132px;height:4px;margin-top:12px;border-radius:999px;background:linear-gradient(90deg,var(--orange),#ead7c4)}
.catalog-results{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin-top:22px}
.catalog-empty,.catalog-error{padding:18px;border-radius:16px;background:#fff7ef;border:1px solid #f2c79c;color:#7a4b11}
.product-card{overflow:hidden;display:flex;flex-direction:column}
.product-card-media{background:linear-gradient(180deg,#ffffff,#f3f5f8);padding:18px;border-bottom:1px solid var(--line)}
.product-card-media img{width:100%;height:260px;object-fit:contain}
.product-card-body{padding:18px;display:flex;flex-direction:column;gap:12px;flex:1}
.product-code{display:inline-flex;align-self:flex-start;padding:8px 12px;border-radius:999px;background:#f4f6f8;border:1px solid var(--line);font-weight:800;color:var(--ink-soft)}
.product-detail-shell{padding:28px 0 40px}
.breadcrumb{display:flex;gap:8px;flex-wrap:wrap;color:var(--ink-soft);font-size:.94rem;margin-bottom:16px}
.product-detail-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:22px;align-items:start}
.product-showcase{display:grid;gap:18px}
.product-panel{padding:22px}
.product-stage{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:20px;align-items:start}
.product-main-media{min-height:480px;border-radius:22px;border:1px solid var(--line);background:linear-gradient(180deg,#ffffff,#f4f6f8);display:flex;align-items:center;justify-content:center;padding:24px}
.product-main-media img{max-height:440px;object-fit:contain}
.product-side-stack{display:grid;gap:14px}
.product-chip-wrap{display:flex;gap:10px;flex-wrap:wrap}
.product-chip{display:inline-flex;align-items:center;padding:9px 12px;border-radius:999px;background:#f4f6f8;border:1px solid var(--line);font-weight:800;color:var(--ink-soft)}
.product-small-media{min-height:160px;border-radius:20px;border:1px solid var(--line);background:linear-gradient(180deg,#ffffff,#f4f6f8);display:flex;align-items:center;justify-content:center;padding:18px}
.product-small-media img{max-height:128px;object-fit:contain}
.product-panel h2,.product-panel h3{margin:0 0 12px}
.spec-table{width:100%;border-collapse:collapse}
.spec-table td{padding:12px;border-bottom:1px solid rgba(20,33,49,.08)}
.spec-table td:first-child{width:220px;color:var(--ink-soft);font-weight:800}
.spec-table td:last-child{font-weight:800}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.related-card{overflow:hidden}
.related-card-media{background:linear-gradient(180deg,#ffffff,#f4f6f8);padding:18px;border-bottom:1px solid var(--line)}
.related-card-media img{width:100%;height:210px;object-fit:contain}
.related-card-body{padding:18px}
.sidebar-cta{width:100%;margin-top:16px}
.contact-grid,.map-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.contact-card,.map-card{padding:22px}
.map-card iframe{border:0;border-radius:18px;height:320px;width:100%}
.inline-email{display:inline-flex;align-items:center;gap:10px;padding:8px 12px;border-radius:999px;background:#f4f6f8;border:1px solid var(--line)}
.inline-email img{max-width:172px;height:auto}
.site-footer{margin-top:20px;padding:30px 0;background:#fff;border-top:1px solid var(--line);text-align:center;color:var(--ink-soft)}
.site-footer strong{display:block;color:var(--ink);margin-bottom:6px}
.redirect-box{max-width:760px;margin:40px auto;padding:30px;text-align:center}
@media (max-width:1120px){
  .header-row{grid-template-columns:1fr;justify-items:start;padding:12px 0}
  .header-nav{justify-content:flex-start}
  .header-right{justify-content:flex-start}
  .catalog-results,.grid-4,.grid-3,.related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .product-detail-layout,.catalog-layout,.product-stage,.contact-grid,.map-grid{grid-template-columns:1fr}
  .catalog-sidebar .surface{position:static}
}
@media (max-width:720px){
  .header-logo img{height:56px}
  .hero-block,.hero-block.compact{padding:40px 0 46px}
  .hero-title{font-size:clamp(26px,9vw,40px)}
  .catalog-search{grid-template-columns:1fr}
  .catalog-results,.grid-4,.grid-3,.grid-2,.related-grid{grid-template-columns:1fr}
  .product-main-media{min-height:320px}
  .product-card-media img{height:220px}
}