*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;background:#fff;color:#1e293b;line-height:1.5}
:root{--primary-dark:#0f172a;--primary-blue:#1e3a8a;--accent-orange:#ea580c;--accent-orange-hover:#c2410c;--gray-bg:#f1f5f9;--gray-border:#e2e8f0;--text-muted:#475569;--white:#fff}
.container{max-width:1280px;margin:0 auto;padding:0 24px}
.top-bar{background:var(--primary-dark);color:#cbd5e1;font-size:13px;padding:8px 0}
.top-bar .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
.top-bar a{color:#f8fafc;text-decoration:none;margin-left:20px;font-weight:500}
.top-bar a:hover{color:var(--accent-orange)}
header{background:var(--white);box-shadow:0 2px 8px rgba(0,0,0,.04);position:sticky;top:0;z-index:50}
.nav-container{display:flex;align-items:center;justify-content:space-between;padding:16px 0}
.logo{font-size:28px;font-weight:700;letter-spacing:-.02em;color:var(--primary-dark);text-decoration:none}
.logo span{color:var(--accent-orange)}
.nav-links{display:flex;gap:32px;list-style:none}
.nav-links a{text-decoration:none;font-weight:600;font-size:15px;color:var(--primary-dark);transition:color .2s}
.nav-links a:hover{color:var(--accent-orange)}
.header-cta{display:flex;gap:12px;align-items:center}
.btn{display:inline-block;padding:12px 28px;border-radius:6px;font-weight:600;font-size:15px;text-decoration:none;transition:all .2s;border:none;cursor:pointer;line-height:1.2}
.btn-primary{background:var(--accent-orange);color:var(--white);box-shadow:0 4px 12px rgba(234,88,12,.25)}
.btn-primary:hover{background:var(--accent-orange-hover);transform:translateY(-1px)}
.btn-outline{background:transparent;color:var(--primary-dark);border:2px solid var(--gray-border)}
.btn-outline:hover{border-color:var(--accent-orange);color:var(--accent-orange)}
.hero{background:linear-gradient(105deg,rgba(15,23,42,.88),rgba(15,23,42,.72)),url('images/hero-industrial-bg.svg') center/cover no-repeat;color:#fff;padding:100px 0 90px;min-height:520px;display:flex;align-items:center}
.hero-content{max-width:780px}
.hero-badge{display:inline-block;background:rgba(234,88,12,.2);border:1px solid var(--accent-orange);color:#fdba74;font-size:14px;font-weight:600;padding:6px 16px;border-radius:40px;margin-bottom:24px}
.hero h1{font-size:52px;font-weight:700;line-height:1.15;letter-spacing:-.02em;margin-bottom:20px}
.hero h1 span{color:var(--accent-orange)}
.hero p{font-size:19px;color:#e2e8f0;margin-bottom:32px;max-width:650px}
.hero-stats{display:flex;gap:48px;margin:40px 0 32px;flex-wrap:wrap}
.stat-item .stat-number{font-size:30px;font-weight:700;color:var(--accent-orange);line-height:1}
.stat-item .stat-label{font-size:14px;color:#cbd5e1;margin-top:6px}
.hero-buttons{display:flex;gap:16px;flex-wrap:wrap}
.section-header{text-align:center;max-width:700px;margin:0 auto 56px}
.section-header h2{font-size:38px;font-weight:700;letter-spacing:-.02em;color:var(--primary-dark);margin-bottom:16px}
.section-header p{font-size:17px;color:var(--text-muted)}
.categories{padding:80px 0;background:var(--white)}
.category-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.category-card{background:var(--white);border:1px solid var(--gray-border);border-radius:12px;overflow:hidden;transition:all .25s;box-shadow:0 2px 8px rgba(0,0,0,.02);display:flex;flex-direction:column;text-decoration:none;color:inherit}
.category-card:hover{box-shadow:0 12px 28px rgba(0,0,0,.08);border-color:#cbd5e1;transform:translateY(-4px)}
.category-image{height:160px;background-size:cover;background-position:center;background-color:#e2e8f0}
.category-body{padding:20px 20px 22px;flex:1;display:flex;flex-direction:column}
.category-body h3{font-size:18px;font-weight:700;margin-bottom:8px;color:var(--primary-dark)}
.category-body p{font-size:14px;color:var(--text-muted);margin-bottom:16px;flex:1}
.category-link{font-size:14px;font-weight:600;color:var(--accent-orange);text-decoration:none;display:inline-flex;align-items:center;gap:6px}
.category-link:hover{text-decoration:underline}
.why-us{background:var(--gray-bg);padding:80px 0}
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.feature-card{background:var(--white);padding:32px 24px;border-radius:12px;box-shadow:0 2px 10px rgba(0,0,0,.02);text-align:center;border:1px solid var(--gray-border)}
.feature-icon{background:#fff7ed;width:64px;height:64px;margin:0 auto 20px;border-radius:16px;display:flex;align-items:center;justify-content:center;font-size:28px}
.feature-card h3{font-size:18px;font-weight:700;margin-bottom:10px}
.feature-card p{font-size:14px;color:var(--text-muted)}
.featured{padding:80px 0;background:var(--white)}
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.product-card{border:1px solid var(--gray-border);border-radius:12px;overflow:hidden;transition:box-shadow .2s;background:var(--white);display:flex;flex-direction:column}
.product-card:hover{box-shadow:0 8px 24px rgba(0,0,0,.06)}
.product-image{height:200px;background-size:cover;background-position:center;background-color:#f1f5f9;position:relative}
.product-tag{position:absolute;top:12px;left:12px;background:var(--accent-orange);color:#fff;font-size:11px;font-weight:700;padding:4px 10px;border-radius:4px;text-transform:uppercase}
.product-body{padding:18px;flex:1;display:flex;flex-direction:column}
.product-body h3{font-size:16px;font-weight:700;margin-bottom:6px}
.product-spec{font-size:13px;color:var(--text-muted);margin-bottom:16px}
.inquiry-btn{background:transparent;border:2px solid var(--accent-orange);color:var(--accent-orange);font-weight:600;font-size:13px;padding:8px 12px;border-radius:6px;cursor:pointer;transition:all .2s;width:100%;margin-top:auto}
.inquiry-btn:hover{background:var(--accent-orange);color:#fff}
.brands{background:var(--gray-bg);padding:56px 0}
.brands-row{display:flex;justify-content:center;align-items:center;gap:48px;flex-wrap:wrap;opacity:.8}
.brand-item{font-size:22px;font-weight:700;color:#64748b;letter-spacing:.5px;transition:color .2s}
.brand-item:hover{color:var(--primary-dark)}
.cta-band{background:var(--primary-blue);padding:56px 0;color:#fff}
.cta-flex{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:24px}
.cta-flex h2{font-size:32px;font-weight:700}
.cta-flex p{color:#bfdbfe;margin-top:6px;font-size:16px}
.contact-section{padding:80px 0;background:var(--white)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.contact-info h2{font-size:32px;font-weight:700;margin-bottom:20px}
.contact-info p{color:var(--text-muted);margin-bottom:32px;font-size:16px}
.contact-detail{display:flex;gap:16px;margin-bottom:24px}
.contact-icon{font-size:22px;width:48px;height:48px;background:#fff7ed;border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.contact-detail strong{display:block;font-weight:700;margin-bottom:4px}
.contact-detail span,.contact-detail a{color:var(--text-muted);font-size:15px;text-decoration:none}
.contact-detail a:hover{color:var(--accent-orange)}
.inquiry-form{background:var(--gray-bg);padding:32px;border-radius:16px}
.inquiry-form h3{font-size:22px;font-weight:700;margin-bottom:8px}
.inquiry-form .sub{color:var(--text-muted);font-size:14px;margin-bottom:24px}
.form-group{margin-bottom:16px}
.form-group label{display:block;font-weight:600;font-size:14px;margin-bottom:6px}
.form-group input,.form-group textarea{width:100%;padding:12px 14px;border:1px solid var(--gray-border);border-radius:6px;font-size:15px;font-family:inherit;background:var(--white)}
.form-group input:focus,.form-group textarea:focus{outline:2px solid var(--accent-orange);border-color:transparent}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
footer{background:var(--primary-dark);color:#cbd5e1;padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.5fr;gap:48px;margin-bottom:40px}
.footer-brand h3{color:#fff;font-size:26px;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.7;color:#94a3b8}
.footer-col h3{color:#fff;font-size:16px;font-weight:700;margin-bottom:20px}
.footer-col ul{list-style:none}
.footer-col ul li{margin-bottom:12px}
.footer-col ul li a{color:#94a3b8;text-decoration:none;font-size:14px}
.footer-col ul li a:hover{color:var(--accent-orange)}
.footer-bottom{border-top:1px solid #1e293b;padding-top:24px;display:flex;justify-content:space-between;font-size:13px;color:#64748b;flex-wrap:wrap;gap:12px}
.floating-inquiry{position:fixed;bottom:24px;right:24px;background:var(--accent-orange);color:#fff;width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:24px;box-shadow:0 8px 24px rgba(234,88,12,.4);z-index:100;text-decoration:none;transition:transform .2s}
.floating-inquiry:hover{transform:scale(1.05)}
.breadcrumb{background:var(--gray-bg);padding:16px 0;font-size:14px}
.breadcrumb a{color:var(--text-muted);text-decoration:none}
.breadcrumb a:hover{color:var(--accent-orange)}
.breadcrumb span{color:var(--primary-dark);font-weight:600}
.cat-hero{padding:64px 0;background:linear-gradient(105deg,rgba(15,23,42,.9),rgba(15,23,42,.72)),var(--cat-bg) center/cover no-repeat;color:#fff}
.cat-hero h1{font-size:42px;font-weight:700;letter-spacing:-.02em;margin-bottom:12px}
.cat-hero p{font-size:18px;color:#e2e8f0;max-width:700px}
.cat-content{padding:64px 0}
.cat-layout{display:grid;grid-template-columns:280px 1fr;gap:48px;align-items:start}
.cat-sidebar{background:var(--gray-bg);padding:24px;border-radius:12px;position:sticky;top:100px}
.cat-sidebar h3{font-size:16px;font-weight:700;margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid var(--accent-orange)}
.cat-sidebar ul{list-style:none}
.cat-sidebar ul li{margin-bottom:8px}
.cat-sidebar ul li a{display:block;padding:10px 12px;color:var(--text-muted);text-decoration:none;font-size:14px;font-weight:500;border-radius:6px;transition:all .2s}
.cat-sidebar ul li a:hover{background:var(--white);color:var(--accent-orange)}
.cat-sidebar ul li a.active{background:var(--accent-orange);color:#fff}
.cat-sidebar .sidebar-cta{margin-top:20px;padding-top:20px;border-top:1px solid var(--gray-border)}
.cat-sidebar .sidebar-cta p{font-size:13px;color:var(--text-muted);margin-bottom:12px}
.cat-sidebar .sidebar-cta .btn{padding:10px 16px;font-size:13px;width:100%;text-align:center}
.cat-main h2{font-size:28px;font-weight:700;margin-bottom:16px;color:var(--primary-dark)}
.cat-main>p{font-size:16px;color:var(--text-muted);margin-bottom:40px;line-height:1.7}
.cat-subcategory-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:48px}
.cat-sub-card{border:1px solid var(--gray-border);border-radius:10px;overflow:hidden;transition:all .2s;background:var(--white)}
.cat-sub-card:hover{box-shadow:0 8px 20px rgba(0,0,0,.06);transform:translateY(-2px)}
.cat-sub-card .sub-img{height:150px;background-size:cover;background-position:center;background-color:#e2e8f0}
.cat-sub-card .sub-body{padding:16px}
.cat-sub-card h3{font-size:15px;font-weight:700;margin-bottom:6px}
.cat-sub-card p{font-size:13px;color:var(--text-muted);margin-bottom:12px}
.cat-specs{background:var(--gray-bg);padding:32px;border-radius:12px;margin-bottom:40px}
.cat-specs h3{font-size:18px;font-weight:700;margin-bottom:20px}
.cat-specs table{width:100%;border-collapse:collapse}
.cat-specs th,.cat-specs td{text-align:left;padding:10px 12px;font-size:14px;border-bottom:1px solid var(--gray-border)}
.cat-specs th{color:var(--text-muted);font-weight:600;width:180px}
.cat-specs td{color:var(--primary-dark);font-weight:500}
.cat-cta-box{background:var(--primary-blue);padding:32px;border-radius:12px;color:#fff;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:20px}
.cat-cta-box h3{font-size:22px;font-weight:700;margin-bottom:6px}
.cat-cta-box p{color:#bfdbfe;font-size:14px}
@media(max-width:1024px){.category-grid,.product-grid,.features-grid,.cat-subcategory-grid{grid-template-columns:repeat(2,1fr)}.hero h1{font-size:40px}.footer-grid{grid-template-columns:1fr 1fr}.cat-layout{grid-template-columns:1fr}.cat-sidebar{position:static}}
@media(max-width:768px){.nav-links{display:none}.hero{padding:64px 0}.hero h1{font-size:32px}.hero p{font-size:16px}.hero-stats{gap:24px}.contact-grid,.category-grid,.product-grid,.features-grid,.cat-subcategory-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.cta-flex{flex-direction:column;text-align:center}.form-row{grid-template-columns:1fr}.cat-hero h1{font-size:30px}}

/* ---- added: images, accessibility, FAQ, about ---- */
img{max-width:100%}
.category-image img,.product-image img,.cat-sub-card .sub-img img{width:100%;height:100%;object-fit:cover;display:block}
.category-image,.product-image,.cat-sub-card .sub-img{overflow:hidden}
.skip-link{position:absolute;left:-9999px;top:8px;background:var(--primary-dark);color:#fff;padding:10px 16px;border-radius:6px;z-index:200;text-decoration:none}
.skip-link:focus{left:8px}
.top-bar .tb-left a{margin-left:0}
.footer-col ul li{font-size:14px;color:#94a3b8}
a:focus-visible,button:focus-visible,summary:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid var(--accent-orange);outline-offset:2px}
.cat-sidebar .side-title{font-size:18px;font-weight:700;margin-bottom:16px;color:var(--primary-dark)}
.cat-specs th{text-align:left}
.about{padding:64px 0 8px;background:var(--white)}
.about .section-header{margin-bottom:20px}
.about-text{max-width:860px;margin:0 auto;text-align:center;font-size:17px;line-height:1.75;color:var(--text-muted)}
.faq-section{padding:64px 0 80px;background:var(--gray-bg)}
.faq{max-width:860px;margin:0 auto}
.faq-section .section-header{margin-bottom:32px}
.cat-main .faq{margin:0 0 40px;max-width:none}
.cat-main .faq>h3{font-size:22px;font-weight:700;margin-bottom:16px;color:var(--primary-dark)}
.faq-item{background:var(--white);border:1px solid var(--gray-border);border-radius:10px;margin-bottom:12px;padding:0}
.faq-item summary{cursor:pointer;font-weight:600;padding:16px 20px;list-style:none;color:var(--primary-dark);position:relative;padding-right:48px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:22px;color:var(--accent-orange);font-weight:700}
.faq-item[open] summary::after{content:"\2212"}
.faq-item p{padding:0 20px 18px;color:var(--text-muted);line-height:1.7;font-size:15px}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}