:root{
  --primary:#0f3d6e;          /* logo navy */
  --primary-2:#1c6fb4;        /* logo royal blue */
  --primary-3:#3a6ea5;        /* steel blue */
  --primary-dark:#082b47;
  --primary-light:#eaf1f8;
  --accent:#f0892a;           /* single warm CTA accent */
  --accent-deep:#d9711a;
  --ink:#16202c;
  --gray:#5d6b7a;
  --line:#e6ebf1;
  --bg:#f6f8fa;
  --white:#fff;
  --ok:#1f9d55;
  --radius:10px;
  --shadow:0 6px 20px rgba(16,42,77,.07);
  --shadow-lg:0 12px 34px rgba(16,42,77,.12);
  --maxw:1240px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Segoe UI",Roboto,"Microsoft YaHei","PingFang SC",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.6;font-size:15px;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.btn{display:inline-block;padding:11px 22px;border-radius:var(--radius);font-weight:600;cursor:pointer;border:none;transition:.18s;font-size:14px}
.btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff}
.btn-primary:hover{background:linear-gradient(135deg,var(--primary-dark),var(--primary))}
.btn-accent{background:linear-gradient(135deg,#f7a13f,var(--accent));color:#fff}
.btn-accent:hover{filter:brightness(.96)}
.btn-ghost{background:transparent;border:1px solid var(--primary);color:var(--primary)}
.btn-ghost:hover{background:var(--primary-light)}
.btn-block{display:block;width:100%;text-align:center}

/* ===== Top bar ===== */
.topbar{background:linear-gradient(90deg,var(--primary-dark),#0d3460);color:#cfe0f7;font-size:12.5px}
.topbar .container{display:flex;justify-content:space-between;align-items:center;height:38px}
.topbar a{color:#cfe0f7}
.topbar a:hover{color:#fff}
.tb-left{display:flex;gap:16px;flex-wrap:wrap}
.tb-left .inquiry b{color:#f3c98a;font-weight:700}
.lang-switch a{padding:2px 7px;border-radius:5px}
.lang-switch a.active{background:rgba(255,255,255,.18);color:#fff}

/* ===== Header ===== */
.header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.header .container{display:flex;align-items:center;gap:18px;height:74px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--primary);white-space:nowrap}
.logo .mark{width:34px;height:34px;border-radius:8px;background:linear-gradient(135deg,var(--primary),var(--primary-2));display:grid;place-items:center;color:#fff;font-size:18px}
.logo small{display:block;font-size:11px;color:var(--gray);font-weight:500;letter-spacing:.3px}
.logo-img img{height:42px;width:auto;display:block}
.logo-footer img{height:54px;width:auto;display:block}
.cat-btn{background:var(--primary);color:#fff;border:none;padding:0 16px;height:46px;border-radius:var(--radius);font-weight:700;font-size:14px;cursor:pointer;white-space:nowrap;flex:none}
.cat-btn:hover{background:var(--primary-dark)}
.search{flex:1;display:flex;border:2px solid var(--primary);border-radius:var(--radius);overflow:hidden;max-width:560px}
.search select{border:none;background:var(--primary-light);padding:0 12px;color:var(--primary-dark);font-weight:600;font-size:13px;outline:none}
.search input{flex:1;border:none;padding:0 14px;outline:none;font-size:14px}
.search button{background:var(--primary);color:#fff;border:none;padding:0 20px;cursor:pointer;font-size:15px}
.search button:hover{background:var(--primary-dark)}
.header-icons{display:flex;align-items:center;gap:18px;margin-left:auto;font-size:13px;color:var(--gray)}
.header-icons a{display:flex;flex-direction:column;align-items:center;gap:2px;position:relative}
.header-icons a:hover{color:var(--primary)}
.header-icons .badge{position:absolute;top:-6px;right:-8px;background:var(--accent);color:#fff;font-size:10px;border-radius:10px;min-width:17px;height:17px;display:grid;place-items:center;font-weight:700}

/* ===== Mega panel (All Categories) ===== */
.mega-panel{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-top:1px solid var(--line);box-shadow:0 14px 30px rgba(15,40,80,.12);padding:22px 0;z-index:60}
.mega-panel.open{display:grid;grid-template-columns:repeat(4,1fr);gap:22px 30px;max-width:var(--maxw);margin:0 auto;padding:0 20px 24px}
.mega-col{display:flex;flex-direction:column}
.mega-h{font-weight:700;color:var(--primary);font-size:14px;padding:6px 0;margin-bottom:2px}
.mega-h:hover{text-decoration:underline}
.mega-s{font-size:12.5px;color:var(--gray);padding:3px 0 3px 14px;position:relative}
.mega-s:before{content:"›";position:absolute;left:2px;color:#b9c6db}
.mega-s:hover{color:var(--primary)}

/* ===== Nav ===== */
.nav{background:linear-gradient(90deg,var(--primary-dark),var(--primary) 55%,var(--primary-2))}
.nav .container{display:flex;gap:4px;flex-wrap:wrap}
.nav a{padding:12px 16px;color:#dfe9f8;font-weight:600;font-size:14px;transition:.15s}
.nav a:hover{background:rgba(255,255,255,.12);color:#fff}
.nav a.hot{color:#f3c98a}

/* ===== Hero ===== */
.hero{background:linear-gradient(118deg,var(--primary-dark) 0%,var(--primary) 50%,var(--primary-2) 100%);color:#fff;padding:54px 0 40px}
.hero-grid{display:grid;grid-template-columns:1.5fr 1fr;gap:40px;align-items:center}
.hero-tag{display:inline-block;background:rgba(255,255,255,.16);padding:5px 14px;border-radius:30px;font-size:12.5px;font-weight:600;margin-bottom:14px;letter-spacing:.5px}
.hero h1{font-size:40px;line-height:1.15;margin-bottom:16px;font-weight:800}
.hero p{font-size:16px;max-width:560px;color:#dbe8fb;margin-bottom:24px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-card{background:rgba(255,255,255,.97);border-radius:14px;padding:22px;color:var(--ink);box-shadow:0 12px 40px rgba(0,0,0,.18)}
.hc-title{font-weight:800;font-size:16px;margin-bottom:14px;color:var(--primary-dark)}
.hero-card input{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:8px;margin-bottom:10px;font-size:14px;outline:none}
.hero-card input:focus{border-color:var(--primary)}
.hc-note{font-size:12px;color:var(--gray);margin-top:10px;text-align:center}
.stats{display:flex;gap:34px;margin-top:34px;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.18);padding-top:22px}
.stats div{font-size:13px;color:#cfe0f7}
.stats b{display:block;font-size:25px;color:#fff;font-weight:800}

/* ===== Section ===== */
.section{padding:48px 0}
.section-title{font-size:24px;font-weight:800;margin-bottom:6px;color:var(--ink)}
.section-sub{color:var(--gray);margin-bottom:28px}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:24px}

/* ===== Category grid ===== */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.cat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;display:flex;gap:14px;align-items:center;transition:.18s;box-shadow:var(--shadow)}
.cat-card:hover{transform:translateY(-3px);border-color:var(--primary)}
.cat-card .ic{width:46px;height:46px;border-radius:10px;background:var(--primary-light);color:var(--primary);display:grid;place-items:center;font-size:22px;flex:none}
.cat-card .ic svg{width:26px;height:26px;display:block}
.mega-h svg{width:16px;height:16px;vertical-align:-3px;margin-right:5px}
.sidebar .cat-link svg{width:16px;height:16px;vertical-align:-3px;margin-right:6px}
.cat-card h4{font-size:15px;margin-bottom:2px}
.cat-card span{font-size:12.5px;color:var(--gray)}
/* colorful category palette (Western business multi-hue) */
.cat-grid .cat-card{border-top:3px solid var(--line);transition:.18s}
.cat-grid .cat-card:nth-child(8n+1) .ic{background:rgba(15,61,110,.10);color:#0f3d6e}
.cat-grid .cat-card:nth-child(8n+2) .ic{background:rgba(28,111,180,.12);color:#1c6fb4}
.cat-grid .cat-card:nth-child(8n+3) .ic{background:rgba(58,110,165,.12);color:#3a6ea5}
.cat-grid .cat-card:nth-child(8n+4) .ic{background:rgba(13,79,134,.12);color:#0d4f86}
.cat-grid .cat-card:nth-child(8n+5) .ic{background:rgba(20,80,127,.12);color:#14507f}
.cat-grid .cat-card:nth-child(8n+6) .ic{background:rgba(33,103,156,.12);color:#21679c}
.cat-grid .cat-card:nth-child(8n+7) .ic{background:rgba(10,47,84,.10);color:#0a2f54}
.cat-grid .cat-card:nth-child(8n+8) .ic{background:rgba(45,127,184,.12);color:#2d7fb8}
.cat-grid .cat-card:nth-child(8n+1){border-top-color:#0f3d6e}
.cat-grid .cat-card:nth-child(8n+2){border-top-color:#1c6fb4}
.cat-grid .cat-card:nth-child(8n+3){border-top-color:#3a6ea5}
.cat-grid .cat-card:nth-child(8n+4){border-top-color:#0d4f86}
.cat-grid .cat-card:nth-child(8n+5){border-top-color:#14507f}
.cat-grid .cat-card:nth-child(8n+6){border-top-color:#21679c}
.cat-grid .cat-card:nth-child(8n+7){border-top-color:#0a2f54}
.cat-grid .cat-card:nth-child(8n+8){border-top-color:#2d7fb8}
.cat-grid .cat-card:hover .ic{transform:scale(1.06)}

/* ===== Product grid ===== */
.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.prod-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:.18s}
.prod-card:hover{box-shadow:var(--shadow);transform:translateY(-3px)}
.prod-thumb{height:150px;background:linear-gradient(135deg,#eef3fa,#e3edf9);display:grid;place-items:center;position:relative}
.prod-thumb .tag{position:absolute;top:10px;left:10px;background:var(--accent);color:#fff;font-size:11px;padding:2px 8px;border-radius:20px;font-weight:600}
.prod-thumb svg{width:64px;height:64px}
.prod-body{padding:14px 14px 16px;display:flex;flex-direction:column;flex:1}
.prod-body .brand{font-size:11.5px;color:var(--gray);font-weight:600;letter-spacing:.5px}
.prod-body h4{font-size:14px;font-weight:700;margin:3px 0 8px;line-height:1.35;min-height:38px}
.prod-body .meta{font-size:12px;color:var(--gray);margin-bottom:4px}
.prod-price{margin-top:auto;display:flex;justify-content:space-between;align-items:center;padding-top:8px}
.prod-price .price{color:var(--accent);font-weight:800;font-size:16px}
.prod-price .stock{font-size:11.5px;color:var(--ok)}
.prod-actions{display:flex;gap:8px;padding:0 14px 14px}
.prod-actions .btn{flex:1;padding:8px 0;font-size:13px}

/* ===== Services ===== */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.svc-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px 20px;text-align:center;box-shadow:var(--shadow)}
.svc-card .ic{width:54px;height:54px;border-radius:50%;background:var(--primary-light);color:var(--primary);display:grid;place-items:center;font-size:24px;margin:0 auto 14px}
.svc-card h4{margin-bottom:8px;font-size:16px}
.svc-card p{font-size:13px;color:var(--gray)}
/* colorful service icons */
.svc-grid .svc-card{border-top:3px solid var(--line);transition:.18s}
.svc-grid .svc-card:nth-child(6n+1) .ic{background:rgba(15,61,110,.10);color:#0f3d6e}
.svc-grid .svc-card:nth-child(6n+2) .ic{background:rgba(28,111,180,.12);color:#1c6fb4}
.svc-grid .svc-card:nth-child(6n+3) .ic{background:rgba(58,110,165,.12);color:#3a6ea5}
.svc-grid .svc-card:nth-child(6n+4) .ic{background:rgba(13,79,134,.12);color:#0d4f86}
.svc-grid .svc-card:nth-child(6n+5) .ic{background:rgba(20,80,127,.12);color:#14507f}
.svc-grid .svc-card:nth-child(6n+6) .ic{background:rgba(33,103,156,.12);color:#21679c}
.svc-grid .svc-card:nth-child(6n+1){border-top-color:#0f3d6e}
.svc-grid .svc-card:nth-child(6n+2){border-top-color:#1c6fb4}
.svc-grid .svc-card:nth-child(6n+3){border-top-color:#3a6ea5}
.svc-grid .svc-card:nth-child(6n+4){border-top-color:#0d4f86}
.svc-grid .svc-card:nth-child(6n+5){border-top-color:#14507f}
.svc-grid .svc-card:nth-child(6n+6){border-top-color:#21679c}

/* ===== Advantage brands ===== */
.brands{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.brand-col h4{font-size:15px;margin-bottom:12px;color:var(--primary-dark)}
.chip{display:inline-block;background:var(--bg);border:1px solid var(--line);border-radius:20px;padding:5px 12px;margin:0 6px 8px 0;font-size:12.5px;font-weight:600;color:var(--ink)}

/* ===== Certs / Industries (dark) ===== */
.certs,.industries{display:flex;flex-wrap:wrap;gap:10px}
.cert{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);border-radius:8px;padding:8px 14px;font-size:13.5px;font-weight:600}

/* ===== Layout with sidebar ===== */
.layout{display:grid;grid-template-columns:260px 1fr;gap:26px;align-items:start}
.sidebar{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px;position:sticky;top:90px}
.sidebar h3{font-size:15px;margin-bottom:10px;padding-bottom:8px;border-bottom:2px solid var(--primary-light)}
.cat-group{margin-bottom:4px}
.sidebar .cat-link{display:block;padding:8px 10px;border-radius:7px;font-size:13.5px;color:var(--ink);cursor:pointer;font-weight:600}
.sidebar .cat-link:hover{background:var(--primary-light);color:var(--primary)}
.sidebar .cat-link.active{background:var(--primary);color:#fff}
.sub-list{display:none;padding:2px 0 4px 14px}
.cat-group.open .sub-list{display:block}
.sidebar .sub-link{display:block;padding:4px 10px;border-radius:6px;font-size:12.5px;color:var(--gray);cursor:pointer}
.sidebar .sub-link:hover{background:var(--primary-light);color:var(--primary)}
.filter-block{margin-top:18px;border-top:1px solid var(--line);padding-top:14px}
.filter-block label{display:flex;align-items:center;gap:8px;font-size:13px;margin-bottom:7px;color:var(--gray);cursor:pointer}

.toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;flex-wrap:wrap;gap:12px}
.toolbar select,.toolbar input{padding:8px 12px;border:1px solid var(--line);border-radius:8px;font-size:13px;outline:none}
.toolbar .left{display:flex;gap:10px;align-items:center}
.count{color:var(--gray);font-size:13px}

/* ===== Pager ===== */
.pager{display:flex;justify-content:center;align-items:center;gap:6px;flex-wrap:wrap;margin:28px 0 8px}
.pager button{padding:7px 12px;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:8px;font-size:13px;cursor:pointer;transition:.15s;min-width:38px}
.pager button:hover:not(:disabled){border-color:var(--primary);color:var(--primary)}
.pager button:disabled{opacity:.4;cursor:not-allowed}
.pager button.active{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600}
.pager .pg-info{margin:0 8px;color:var(--gray);font-size:13px}
.pager .pg-jump{display:inline-flex;align-items:center;gap:4px;margin:0 6px;color:var(--gray);font-size:13px}
.pager .pg-jump input{width:64px;padding:6px 8px;border:1px solid var(--line);border-radius:8px;font-size:13px;text-align:center}
.pager .pg-jump button{padding:6px 10px;border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:8px;font-size:13px;cursor:pointer}
.pager .pg-jump button:hover{border-color:var(--primary);color:var(--primary)}

/* ===== Loading placeholder ===== */
.loading{padding:60px 20px;text-align:center;color:var(--gray);font-size:15px}
.loading::before{content:"";display:block;width:34px;height:34px;margin:0 auto 14px;border:3px solid var(--line);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}


/* ===== Breadcrumb ===== */
.crumb{font-size:13px;color:var(--gray);margin-bottom:16px}
.crumb a:hover{color:var(--primary)}

/* ===== Product detail ===== */
.detail{display:grid;grid-template-columns:420px 1fr;gap:36px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}
.detail .gallery{background:linear-gradient(135deg,#eef3fa,#e3edf9);border-radius:var(--radius);height:340px;display:grid;place-items:center}
.detail .gallery svg{width:140px;height:140px}
.detail h1{font-size:24px;margin-bottom:6px}
.detail .brand{color:var(--gray);font-weight:600;letter-spacing:.5px;margin-bottom:14px}
.detail .price{font-size:28px;color:var(--accent);font-weight:800;margin:14px 0}
.detail .price small{font-size:13px;color:var(--gray);font-weight:500}
.detail .specs{width:100%;border-collapse:collapse;margin:16px 0;font-size:13.5px}
.detail .specs td{border:1px solid var(--line);padding:9px 12px}
.detail .specs td:first-child{background:var(--bg);width:140px;color:var(--gray);font-weight:600}
.detail .qty{display:flex;align-items:center;gap:10px;margin:18px 0}
.detail .qty input{width:64px;padding:9px;border:1px solid var(--line);border-radius:8px;text-align:center;font-size:15px}
.detail-actions{display:flex;gap:12px;margin-top:8px}
.detail-actions .btn{flex:1;text-align:center}

/* ===== Table (cart/RFQ) ===== */
.table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.table th,.table td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line);font-size:14px}
.table th{background:var(--bg);color:var(--gray);font-weight:700;font-size:13px}
.table tr:last-child td{border-bottom:none}
.table .pname{font-weight:700}
.table input[type=number]{width:60px;padding:6px;border:1px solid var(--line);border-radius:6px;text-align:center}
.table .rm{color:#c0392b;cursor:pointer;font-size:13px}
.cart-summary{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);margin-top:22px}
.cart-summary .row{display:flex;justify-content:space-between;padding:7px 0;font-size:14px}
.cart-summary .total{font-size:20px;font-weight:800;color:var(--accent);border-top:1px solid var(--line);margin-top:8px;padding-top:12px}
.empty{text-align:center;padding:60px 20px;color:var(--gray)}

/* ===== Forms ===== */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{display:flex;flex-direction:column;gap:6px}
.field.full{grid-column:1/-1}
.field label{font-size:13px;font-weight:600;color:var(--ink)}
.field input,.field textarea,.field select{padding:11px 12px;border:1px solid var(--line);border-radius:8px;font-size:14px;font-family:inherit;outline:none}
.field input:focus,.field textarea:focus{border-color:var(--primary)}
.form-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);max-width:760px}

/* ===== Two column info ===== */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:32px}
.info-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow)}
.info-card h3{margin-bottom:14px;font-size:18px}
.info-card ul{list-style:none}
.info-card li{padding:8px 0 8px 24px;position:relative;font-size:14px;border-bottom:1px dashed var(--line)}
.info-card li:before{content:"✓";position:absolute;left:0;color:var(--ok);font-weight:800}
/* dark variant for About "Quality & Certifications" panel */
.info-card.dark{background:linear-gradient(120deg,#0a2a4d 0%,#0f3d6e 60%,#1c6fb4 100%);color:#fff;border-color:transparent;box-shadow:var(--shadow-lg)}
.info-card.dark h3{color:#fff}
.info-card.dark .cert{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.30)}
.contact-item{display:flex;gap:14px;align-items:flex-start;margin-bottom:16px}
.contact-item .ic{width:42px;height:42px;border-radius:10px;background:var(--primary-light);color:var(--primary);display:grid;place-items:center;font-size:20px;flex:none}
.contact-item b{display:block;font-size:13px}
.contact-item span{font-size:12.5px;color:var(--gray)}

/* ===== Timeline (About) ===== */
.timeline{position:relative;margin-left:8px;padding-left:26px}
.timeline:before{content:"";position:absolute;left:6px;top:4px;bottom:4px;width:2px;background:var(--primary-light)}
.tl-item{position:relative;padding:0 0 22px 6px}
.tl-item:before{content:"";position:absolute;left:-26px;top:4px;width:12px;height:12px;border-radius:50%;background:var(--primary);border:3px solid #fff;box-shadow:0 0 0 2px var(--primary-light)}
.tl-item b{color:var(--primary-dark);font-size:15px}
.tl-item p{font-size:13.5px;color:var(--gray)}

/* ===== Footer ===== */
.footer{background:linear-gradient(135deg,#082b47 0%,#0f3d6e 55%,#1c6fb4 100%);color:#aab8cc;margin-top:40px;padding:44px 0 0;font-size:13px;border-top:3px solid var(--accent)}
.footer .cols p{font-size:12.5px;line-height:1.5;margin:0 0 7px}
.footer .cols{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:30px}
.footer h4{color:#fff;font-size:15px;margin-bottom:14px}
.footer a{color:#aab8cc;display:block;padding:4px 0}
.footer a:hover{color:#fff}
.footer .logo{color:#fff;margin-bottom:12px;display:flex;align-items:center;gap:8px;font-weight:800;font-size:18px}
.footer .logo .mark{width:30px;height:30px;border-radius:7px;background:linear-gradient(135deg,var(--primary),var(--primary-2));display:grid;place-items:center;color:#fff;font-size:15px}
.footer .bottom{border-top:1px solid #16293f;margin-top:30px;padding:16px 0;text-align:center;color:#7e8da3;font-size:12.5px}
.footer .socials{display:flex;gap:10px;margin-top:12px}
.footer .socials a{width:34px;height:34px;border-radius:8px;background:#14283f;display:grid;place-items:center;color:#cfe0f7}

/* ===== Toast ===== */
.toast{position:fixed;bottom:30px;left:50%;transform:translateX(-50%) translateY(20px);background:var(--ink);color:#fff;padding:12px 22px;border-radius:30px;font-size:14px;opacity:0;pointer-events:none;transition:.25s;z-index:200;box-shadow:0 8px 30px rgba(0,0,0,.25)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ===== Responsive ===== */
@media(max-width:980px){
  .cat-grid,.prod-grid{grid-template-columns:repeat(2,1fr)}
  .svc-grid,.brands{grid-template-columns:1fr 1fr}
  .layout{grid-template-columns:1fr}
  .sidebar{position:static}
  .hero-grid{grid-template-columns:1fr}
  .detail{grid-template-columns:1fr}
  .two-col{grid-template-columns:1fr}
  .mega-panel.open{grid-template-columns:repeat(2,1fr)}
  .footer .cols{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .cat-grid,.prod-grid,.svc-grid,.brands{grid-template-columns:1fr}
  .header .container{flex-wrap:wrap;height:auto;padding:10px 20px;gap:12px}
  .search{max-width:none;order:3;width:100%}
  .cat-btn{order:2}
  .nav a{padding:10px 12px;font-size:13px}
  .form-grid{grid-template-columns:1fr}
  .hero h1{font-size:28px}
  .footer .cols{grid-template-columns:1fr}
}

/* ===== Brand wall (carousel) ===== */
.brand-wall{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:34px 0}
.brand-wall .bw-head{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:20px;gap:16px;flex-wrap:wrap}
.brand-wall .bw-tools{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.brand-search{padding:9px 14px;border:1px solid var(--line);border-radius:8px;font-size:13px;outline:none;min-width:210px;background:#fff}
.brand-search:focus{border-color:var(--primary)}
.brand-empty{padding:30px 20px}
.brand-marquee{overflow:hidden;position:relative;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 3%,#000 97%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 3%,#000 97%,transparent)}
.brand-track{display:flex;gap:14px;width:max-content;align-items:center;animation:brandScroll 240s linear infinite}
.brand-marquee:hover .brand-track{animation-play-state:paused}
@keyframes brandScroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.brand-logo{display:inline-flex;align-items:center;gap:9px;flex:none;padding:8px 16px;border:1px solid var(--line);border-radius:10px;background:transparent;text-decoration:none;transition:.18s}
.brand-logo:hover{border-color:var(--bc);box-shadow:var(--shadow);transform:translateY(-2px)}
.brand-logo .bl-mark{width:26px;height:26px;border-radius:7px;background:var(--bc);color:#fff;display:grid;place-items:center;font-weight:800;font-size:13px;flex:none;line-height:1}
.brand-logo .bl-name{font-weight:800;font-size:15px;color:var(--bc);white-space:nowrap;letter-spacing:.2px}

/* ===== BOM Matching ===== */
.bom-card{background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);padding:22px;margin-bottom:22px}
.bom-tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);margin-bottom:18px}
.bom-tab{background:transparent;border:none;padding:12px 20px;font-weight:700;color:var(--gray);cursor:pointer;font-size:15px;border-bottom:3px solid transparent;margin-bottom:-1px}
.bom-tab.active{color:var(--primary);border-bottom-color:var(--accent)}
.bom-panel{}
.dropzone{border:2px dashed #c4d2e4;border-radius:12px;background:var(--primary-light);padding:38px 20px;text-align:center;cursor:pointer;transition:.18s}
.dropzone:hover,.dropzone.drag{border-color:var(--accent);background:#fff6ec}
.dz-ic{font-size:34px;margin-bottom:8px}
.dz-main{font-size:15px;color:var(--ink)}
.dz-link{color:var(--accent);font-weight:700;text-decoration:underline;margin-left:4px}
.dz-accepted{margin-top:8px;font-size:12.5px;color:var(--gray)}
.bom-tools{display:flex;gap:10px;align-items:center;margin-top:14px;flex-wrap:wrap}
.bom-paste{width:100%;border:1px solid var(--line);border-radius:10px;padding:14px;font-family:"Consolas",ui-monospace,monospace;font-size:14px;resize:vertical;outline:none}
.bom-paste:focus{border-color:var(--primary)}
.btn-sm{padding:7px 14px;font-size:13px}
.bom-banner{background:#e9f7ef;border:1px solid #b7e3c8;color:#1c6b3f;border-radius:10px;padding:14px 16px;margin:6px 0 18px;font-weight:600}
.bom-summary{display:flex;gap:14px;flex-wrap:wrap;align-items:center;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:14px 16px;margin-bottom:16px}
.bs{display:flex;flex-direction:column;min-width:78px}
.bs span{font-size:12px;color:var(--gray)}
.bs b{font-size:20px;color:var(--ink)}
.bs.ok b{color:var(--ok)} .bs.warn b{color:var(--accent)} .bs.bad b{color:#d14b4b}
.bom-summary .btn{margin-left:auto}
.bom-results-title{font-size:18px;margin:6px 0 12px;color:var(--primary)}
.bom-table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px}
.bom-table{width:100%;border-collapse:collapse;font-size:14px;min-width:760px}
.bom-table th{background:var(--primary);color:#fff;text-align:left;padding:11px 12px;font-weight:600;white-space:nowrap}
.bom-table td{padding:11px 12px;border-top:1px solid var(--line);vertical-align:top}
.bom-table tbody tr:hover{background:var(--primary-light)}
.bm-part{font-weight:600}
.bm-sub{font-size:12px;color:var(--gray);font-weight:400}
.bm-match a{color:var(--primary);font-weight:600}
.bm-name{font-size:12.5px;color:var(--gray);font-weight:400}
.bm-none{color:#aaa}
.bm-qty{white-space:nowrap}
.badge-st{display:inline-block;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:700}
.badge-st.st-matched{background:#e9f7ef;color:#1c6b3f}
.badge-st.st-partial{background:#fff3e0;color:#b86a16}
.badge-st.st-notfound{background:#fdeaea;color:#c0392b}
tr.st-notfound td{color:#7a8794}
.bom-submit{max-width:840px}

.kicker{display:inline-block;font-size:11px;font-weight:800;letter-spacing:2px;color:var(--accent);text-transform:uppercase;margin-bottom:8px}
.qa-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:36px}
.qa-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px;box-shadow:var(--shadow);position:relative;transition:.15s}
.qa-card:hover{border-color:#d4dde6;box-shadow:0 10px 24px rgba(16,42,77,.09)}
.qa-card .qa-num{width:34px;height:34px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;font-weight:800;font-size:13px;margin-bottom:12px;letter-spacing:.3px}
.qa-card h4{margin-bottom:8px;font-size:15px;color:var(--ink);line-height:1.35}
.qa-card p{font-size:13px;color:var(--gray);line-height:1.6}
.qa-card .qa-subs{margin-top:12px;padding-top:12px;border-top:1px dashed var(--line);list-style:none}
.qa-card .qa-subs li{padding:4px 0 4px 18px;position:relative;font-size:12.5px;color:var(--gray);line-height:1.5}
.qa-card .qa-subs li:before{content:"·";position:absolute;left:4px;top:4px;color:var(--accent);font-weight:900;font-size:18px;line-height:1}
/* colorful QA step badges */
.qa-grid .qa-card:nth-child(8n+1) .qa-num{background:#0f3d6e}
.qa-grid .qa-card:nth-child(8n+2) .qa-num{background:#1c6fb4}
.qa-grid .qa-card:nth-child(8n+3) .qa-num{background:#3a6ea5}
.qa-grid .qa-card:nth-child(8n+4) .qa-num{background:#0d4f86}
.qa-grid .qa-card:nth-child(8n+5) .qa-num{background:#14507f}
.qa-grid .qa-card:nth-child(8n+6) .qa-num{background:#21679c}
.qa-grid .qa-card:nth-child(8n+7) .qa-num{background:#0a2f54}
.qa-grid .qa-card:nth-child(8n+8) .qa-num{background:#2d7fb8}
@media(max-width:980px){.qa-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.qa-grid{grid-template-columns:1fr}}