.skip-link{position:absolute;left:-999px;top:-999px;background:#fff;color:#111;padding:12px 20px;z-index:99999;border-radius:0 0 8px 0;font-size:14px;font-weight:700;text-decoration:none;}
.skip-link:focus{left:0;top:0;}

.ic{width:1em;height:1em;display:inline-block;vertical-align:-0.15em;flex-shrink:0}
.feat-icon .ic,.industry-icon .ic{color:var(--gold)}
.cm-icon .ic{color:var(--gold2)}
.author-icon .ic{color:var(--gold)}

:root{
  --ink:#0f0d0a;--ink2:#2a2318;--ink3:#6b5c40;
  --bg:#faf8f3;--bg2:#f3ede0;--bg3:#e8dcc8;
  --gold:#b07808;--gold2:#d49a18;--gold3:#f5c842;
  --gold-pale:#fef6dd;
  --green:#1a440e;--green2:#256a18;--green-pale:#e8f5e0;
  --white:#ffffff;--border:rgba(140,100,30,0.14);
  --shadow:0 2px 20px rgba(60,40,10,0.08);
  --shadow-lg:0 6px 36px rgba(60,40,10,0.14);
  --radius:10px;--radius-lg:16px;
}
*{margin:0;padding:0;box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{font-family:'Segoe UI',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--ink);line-height:1.7;font-size:15px;}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
.container{max-width:1140px;margin:0 auto;padding:0 24px;}
.label{font-size:11px;font-weight:700;letter-spacing:3px;text-transform:uppercase;color:var(--gold2);font-family:'Courier New',monospace;display:block;margin-bottom:10px;}
.g2{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
.g3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}

.topbar{background:var(--ink);padding:9px 0;font-size:12px;color:rgba(255,255,255,0.5);}
.topbar-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px;}
.topbar a{color:rgba(255,255,255,0.7);display:flex;align-items:center;gap:5px;transition:color .15s;}
.topbar a:hover{color:var(--gold3);}
.topbar-left{display:flex;align-items:center;gap:16px;}
.cert-badge{font-size:10px;font-weight:700;padding:2px 8px;border-radius:3px;border:1px solid rgba(255,255,255,0.2);color:rgba(255,255,255,0.65);}

.nav-wrap{position:sticky;top:0;z-index:100;background:rgba(255,255,255,0.97);backdrop-filter:blur(12px);border-bottom:1px solid rgba(180,140,50,0.12);box-shadow:0 2px 16px rgba(60,40,10,0.07);}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:64px;max-width:1140px;margin:0 auto;}
.nav-logo{font-weight:800;font-size:18px;color:var(--ink);}
.nav-logo span{color:var(--gold);}
.nav-links{display:flex;gap:2px;align-items:center;}
.nav-links a{padding:8px 14px;border-radius:6px;font-size:14px;font-weight:500;color:var(--ink3);transition:all .15s;}
.nav-links a:hover{color:var(--ink);background:var(--bg2);}
.nav-cta{background:var(--gold)!important;color:var(--white)!important;border-radius:8px!important;padding:9px 20px!important;font-weight:700!important;}
.nav-cta:hover{background:var(--gold2)!important;}

.breadcrumb{background:var(--bg2);padding:12px 0;font-size:13px;color:var(--ink3);border-bottom:1px solid var(--bg3);}
.breadcrumb a{color:var(--gold);transition:color .15s;}
.breadcrumb a:hover{color:var(--gold2);}
.breadcrumb span{margin:0 8px;opacity:.5;}

.cat-hero{padding:60px 0 52px;background:var(--white);}
.cat-hero-inner{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.cat-hero h1{font-size:clamp(28px,4vw,44px);font-weight:900;color:var(--ink);line-height:1.15;letter-spacing:-0.5px;margin-bottom:16px;}
.cat-hero p{font-size:16px;color:var(--ink3);line-height:1.75;margin-bottom:24px;}
.cat-hero-img{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);}
.cat-hero-img img{width:100%;height:380px;object-fit:contain;background:var(--white);}
.hero-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:28px;}
.hero-tag{font-size:12px;font-weight:600;padding:5px 12px;border-radius:20px;background:var(--gold-pale);color:var(--gold);border:1px solid rgba(176,120,8,0.2);}
.btn-primary{background:var(--gold);color:var(--white);padding:14px 28px;border-radius:8px;font-weight:700;font-size:15px;display:inline-flex;align-items:center;gap:8px;transition:background .15s,transform .1s;}
.btn-primary:hover{background:var(--gold2);transform:translateY(-1px);}
.btn-secondary{background:var(--bg2);color:var(--ink2);border:1px solid var(--border);padding:14px 24px;border-radius:8px;font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:8px;transition:background .15s;}
.btn-secondary:hover{background:var(--bg3);}
.hero-btns{display:flex;gap:12px;flex-wrap:wrap;}

.specs-bar{background:var(--ink);padding:20px 0;}
.specs-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:0;}
.spec{text-align:center;padding:0 16px;border-right:1px solid rgba(255,255,255,0.1);}
.spec:last-child{border-right:none;}
.spec-n{font-family:'Courier New',monospace;font-size:22px;font-weight:700;color:var(--gold3);display:block;line-height:1;}
.spec-l{font-size:11px;color:rgba(255,255,255,0.55);margin-top:5px;}

.gallery-section{padding:64px 0;background:var(--bg2);}
.subcat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:32px;}
.subcat-item{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:box-shadow .2s,transform .2s;background:#ffffff;}
.subcat-item:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px);}
.subcat-item img{width:100%;aspect-ratio:1/1;object-fit:cover;display:block;opacity:1;transition:transform .25s;background:#ffffff;}
.subcat-item:hover img{transform:scale(1.04);}
.subcat-label{background:#fff;color:var(--ink2);font-size:13px;font-weight:700;line-height:1.4;padding:11px 12px;text-align:center;border-top:2px solid var(--gold-pale);letter-spacing:0.1px;}
.subcat-note{margin-top:18px;font-size:12.5px;color:var(--ink3);background:var(--gold-pale);border:1px solid rgba(176,120,8,0.2);border-radius:var(--radius);padding:12px 16px;}

.features-section{padding:64px 0;background:var(--white);}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:32px;}
.feat-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:24px;}
.feat-icon{font-size:28px;margin-bottom:14px;}
.feat-card h3{font-size:15px;font-weight:700;color:var(--ink);margin-bottom:8px;}
.feat-card p{font-size:13px;color:var(--ink3);line-height:1.7;}

.faq-section{padding:64px 0;background:var(--bg2);}
.faq-list{margin-top:28px;}
.faq-item{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow);}
.faq-q{padding:17px 22px;font-weight:700;font-size:14px;color:var(--ink);display:flex;justify-content:space-between;align-items:center;cursor:pointer;gap:12px;border:none;width:100%;text-align:left;background:var(--white);}
.faq-q:hover{background:var(--bg);}
.faq-icon{font-size:18px;color:var(--gold);flex-shrink:0;transition:transform .25s;}
.faq-a{padding:0 22px;max-height:0;overflow:hidden;transition:max-height .35s ease,padding .35s;font-size:13.5px;color:var(--ink3);line-height:1.8;}
.faq-item.open .faq-a{max-height:300px;padding:0 22px 17px;}
.faq-item.open .faq-icon{transform:rotate(45deg);}

.cta-section{background:var(--ink);padding:64px 0;}
.cta-inner{text-align:center;}
.cta-inner h2{font-size:clamp(24px,3.5vw,36px);font-weight:900;color:var(--white);margin-bottom:14px;}
.cta-inner p{color:rgba(255,255,255,0.55);font-size:16px;margin-bottom:32px;max-width:500px;margin-left:auto;margin-right:auto;}
.cta-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap;}
.btn-cta-primary{background:var(--gold);color:var(--white);padding:15px 32px;border-radius:8px;font-weight:700;font-size:15px;display:inline-flex;align-items:center;gap:8px;transition:background .15s;}
.btn-cta-primary:hover{background:var(--gold2);}
.btn-cta-secondary{background:rgba(255,255,255,0.1);color:rgba(255,255,255,0.85);border:1px solid rgba(255,255,255,0.2);padding:15px 28px;border-radius:8px;font-weight:600;font-size:14px;display:inline-flex;align-items:center;gap:8px;transition:background .15s;}
.btn-cta-secondary:hover{background:rgba(255,255,255,0.16);}
.cta-trust{display:flex;gap:24px;justify-content:center;margin-top:28px;flex-wrap:wrap;}
.cta-trust-item{display:flex;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,0.45);}

.related-section{padding:52px 0;}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:24px;}
.rel-card{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:box-shadow .2s,transform .2s;}
.rel-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px);}
.rel-card img{width:100%;height:180px;object-fit:contain;background:var(--white);padding:8px;}.rel-card > a{display:block;}
.rel-body{padding:16px;}
.rel-body h3{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:6px;}
.rel-body p{font-size:12px;color:var(--ink3);line-height:1.6;margin-bottom:12px;}
.rel-link{font-size:12px;font-weight:600;color:var(--gold);}
.rel-link:hover{color:var(--gold2);}

.footer{background:#080604;padding:44px 0 22px;color:rgba(255,255,255,0.55);font-size:13px;}
.footer-grid{display:grid;grid-template-columns:1.8fr 1fr 1fr 1fr 1.3fr;gap:32px;margin-bottom:40px;}
.footer-brand{font-size:18px;font-weight:800;color:var(--white);margin-bottom:12px;}
.footer-brand span{color:var(--gold);}
.footer-tagline{font-size:13px;color:rgba(255,255,255,0.55);line-height:1.6;margin-bottom:14px;}
.footer-col h3{color:rgba(255,255,255,0.7);font-size:11px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;margin-bottom:14px;font-family:'Courier New',monospace;}
.footer-links{list-style:none;}
.footer-links li{margin-bottom:8px;}
.footer-links a{color:rgba(255,255,255,0.55);font-size:13px;transition:color .15s;}
.footer-links a:hover{color:var(--gold2);}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.06);padding-top:20px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:12px;}
.footer-bottom a{color:rgba(255,255,255,0.55);}
.social-row{display:flex;gap:10px;margin-top:16px;}
.social-icon{width:30px;height:30px;border-radius:50%;background:rgba(255,255,255,0.07);border:1px solid rgba(255,255,255,0.12);display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,0.6);transition:background .15s,color .15s,transform .15s;}
.social-icon:hover{background:var(--gold);color:#fff;transform:translateY(-2px);}

.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);}

@media(max-width:900px){
  .cat-hero-inner,.g2,.g3,.gallery-grid,.feat-grid,.related-grid,.footer-grid,.specs-inner{grid-template-columns:1fr;}
  .subcat-grid{grid-template-columns:repeat(2,1fr);}
  .nav-links{display:none;}
  .cat-hero-img{order:-1;}
  .cta-btns{flex-direction:column;align-items:center;}
}

.footer-certs{display:flex;gap:8px;flex-wrap:wrap;}
.footer-cert-badge{font-size:10px;font-weight:700;padding:3px 9px;border-radius:3px;border:1px solid rgba(255,255,255,0.15);color:rgba(255,255,255,0.5);}
.footer-col h4{color:rgba(255,255,255,0.75);font-size:12px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;margin-bottom:14px;font-family:'Courier New',monospace;}