:root{
  --blue:#053e86;
  --blue2:#0b54b5;
  --red:#e81923;
  --dark:#111827;
  --text:#1d2939;
  --muted:#667085;
  --line:#e4eaf2;
  --bg:#f6f9fc;
  --card:#fff;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,Helvetica,sans-serif;background:#fff;color:var(--text);font-size:15px}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
.container{width:min(1180px,calc(100% - 34px));margin:0 auto}
.topbar{background:var(--blue);color:#fff;font-size:13px}
.topbar .container{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:8px 0}
.topbar .left,.topbar .right{display:flex;align-items:center;gap:24px;flex-wrap:wrap}
.header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;box-shadow:0 4px 20px rgba(0,0,0,.03)}
.header .container{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px 0}
.logo{display:flex;align-items:center;gap:10px;min-width:210px}
.logo img{width:68px;height:68px;object-fit:contain}
.logo-text b{font-size:28px;color:#101828;letter-spacing:.02em}
.logo-text span{display:block;font-size:10px;line-height:1.25;color:#344054;max-width:170px}
.nav{display:flex;align-items:center;gap:26px;font-weight:700;font-size:14px;white-space:nowrap}
.nav a.active,.nav a:hover{color:var(--red)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:4px;padding:13px 22px;font-weight:800;border:1px solid transparent;transition:.18s;white-space:nowrap}
.btn-red{background:var(--red);color:#fff;box-shadow:0 10px 22px rgba(232,25,35,.18)}
.btn-blue{background:var(--blue);color:#fff}
.btn-outline{background:#fff;color:#111827;border-color:#111827}
.btn-light{background:#fff;color:var(--blue);border-color:#cbd5e1}
.btn:hover{transform:translateY(-1px);filter:brightness(.98)}
.section-title{text-align:center;margin:0 0 28px}
.section-title h2{font-size:26px;margin:0;color:#111827;text-transform:uppercase}
.section-title p{color:var(--muted);margin:8px auto 0;max-width:780px;line-height:1.6}
.redline{width:52px;height:3px;background:var(--red);margin:9px auto 0;border-radius:99px}
.hero{background:linear-gradient(90deg,#fff 0%,#fff 45%,#f0f4f9 45%,#f6f8fb 100%);position:relative;overflow:hidden}
.hero:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 77% 32%,rgba(11,84,181,.08),transparent 36%)}
.hero-inner{position:relative;display:grid;grid-template-columns:1fr 1.08fr;gap:26px;align-items:center;min-height:430px;padding:42px 0 34px}
.eyebrow{color:var(--blue);font-size:13px;font-weight:900;text-transform:uppercase;letter-spacing:.05em}
.hero h1{font-size:48px;line-height:1.08;margin:12px 0 12px;color:#101828;letter-spacing:-.03em}
.hero h1 em{font-style:normal;color:var(--blue)}
.hero h2{font-size:24px;line-height:1.34;margin:0 0 14px;color:#101828}
.hero p{color:#344054;line-height:1.7;max-width:610px;margin:0}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:24px}
.hero-image{height:370px;display:flex;align-items:center;justify-content:center}
.hero-product-card{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(120deg,rgba(255,255,255,.75),rgba(255,255,255,.35));border-radius:8px}
.hero-product-card img{max-height:330px;max-width:92%;object-fit:contain;filter:drop-shadow(0 18px 22px rgba(0,0,0,.16))}
.trust-strip{background:#fff;border-bottom:1px solid var(--line);box-shadow:0 6px 24px rgba(16,24,40,.06)}
.trust-grid{display:grid;grid-template-columns:repeat(7,1fr)}
.trust{padding:16px 12px;display:flex;align-items:center;justify-content:center;gap:10px;border-right:1px solid var(--line);min-height:74px}
.trust:last-child{border-right:0}
.trust .icon{font-size:27px;color:var(--blue)}
.trust b{display:block;font-size:13px;color:#101828}
.trust span{font-size:11px;color:#667085}
.section{padding:42px 0}
.section.light{background:var(--bg)}
.card{background:#fff;border:1px solid var(--line);border-radius:7px;box-shadow:0 8px 18px rgba(16,24,40,.04)}
.category-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.category-card{height:112px;padding:14px 14px 12px;display:flex;justify-content:space-between;gap:10px}
.category-card .copy{align-self:center}
.category-card h3{font-size:14px;margin:0 0 8px;color:#101828}
.category-card a{font-size:11px;color:var(--blue);font-weight:800}
.category-card .pic{width:74px;height:80px;align-self:center;display:flex;align-items:center;justify-content:center}
.category-card img{max-height:80px;object-fit:contain}
.product-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}
.product-card{padding:14px;min-height:330px;display:flex;flex-direction:column}
.product-card .pic{height:145px;display:flex;align-items:center;justify-content:center;margin-bottom:12px}
.product-card img{max-height:145px;object-fit:contain}
.product-card h3{font-size:17px;line-height:1.2;margin:0 0 10px;color:#101828;min-height:42px}
.product-card ul{list-style:none;margin:0 0 14px;padding:0;font-size:12px;color:#475467;line-height:1.7;flex:1}
.product-card li:before{content:"•";color:var(--red);font-weight:900;margin-right:6px}
.product-card .mini-btn{background:var(--red);color:#fff;text-align:center;padding:10px;border-radius:3px;font-size:12px;font-weight:800}
.custom-band{background:var(--blue);border-radius:8px;color:#fff;display:grid;grid-template-columns:1.3fr .55fr;overflow:hidden}
.custom-icons{display:grid;grid-template-columns:repeat(7,1fr);gap:1px;background:rgba(255,255,255,.18)}
.custom-icon{padding:24px 10px;text-align:center;background:var(--blue)}
.custom-icon .ico{font-size:27px;margin-bottom:9px}
.custom-icon b{font-size:13px}
.custom-icon span{font-size:11px;display:block;opacity:.86;margin-top:4px}
.custom-copy{padding:26px;background:#052f68;display:flex;flex-direction:column;justify-content:center}
.custom-copy h3{font-size:22px;margin:0 0 8px}
.custom-copy p{opacity:.9;line-height:1.6;margin:0 0 16px}
.case-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px}
.case-card{overflow:hidden}
.case-card .photo{height:130px;background:#edf3fb}
.case-card .photo img{width:100%;height:100%;object-fit:cover}
.case-card .txt{padding:12px}
.case-card h3{font-size:14px;margin:0 0 5px}
.case-card p{font-size:12px;color:var(--muted);margin:0}
.factory-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.factory-card{overflow:hidden;text-align:center}
.factory-card .photo{height:105px;background:#edf3fb}
.factory-card .photo img{width:100%;height:100%;object-fit:cover}
.factory-card h3{font-size:13px;margin:10px 8px 4px}
.factory-card p{font-size:11px;color:var(--muted);margin:0 8px 12px;line-height:1.4}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.info-panel{padding:24px;min-height:300px}
.info-panel h2{margin:0 0 15px;font-size:24px}
.info-panel ul{margin:0 0 18px;padding:0;list-style:none;line-height:1.9;color:#344054}
.info-panel li:before{content:"⊙";color:var(--blue);margin-right:8px}
.map-placeholder{height:170px;border-radius:6px;background:linear-gradient(135deg,#f3f6fa,#e1e8f3);display:flex;align-items:center;justify-content:center;color:#8aa0bc;font-weight:800;margin-bottom:16px}
.stats-row{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;text-align:center}
.stat{border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat b{font-size:23px;color:var(--blue);display:block}
.stat span{font-size:11px;color:#667085}
.faq-inquiry{display:grid;grid-template-columns:.85fr 1.15fr;gap:32px}
.faq-list{display:grid;gap:10px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:4px;padding:14px 16px;display:flex;justify-content:space-between;font-weight:800;font-size:14px}
.inquiry-form{background:#fff}
.form-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.form-grid label{font-size:12px;font-weight:800;color:#344054}
.field{display:flex;flex-direction:column;gap:6px}
input,select,textarea{width:100%;border:1px solid #d0d5dd;border-radius:3px;padding:12px 10px;font-family:inherit}
textarea,.full{grid-column:1/-1}
.upload-note{font-size:11px;color:#667085;margin-top:8px}
.footer-cta{background:var(--blue);color:#fff}
.footer-cta .container{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:22px 0}
.footer-cta h2{margin:0;font-size:22px}
.footer-cta p{margin:3px 0 0;opacity:.86}
.footer{background:#121212;color:#fff;padding:34px 0 14px}
.footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1.25fr;gap:32px}
.footer h4{margin:0 0 13px}
.footer ul{list-style:none;margin:0;padding:0;line-height:1.9;color:#cbd5e1}
.footer p{line-height:1.7;color:#d0d5dd;margin:0}
.footer .logo-text b{color:#fff}
.copyright{border-top:1px solid rgba(255,255,255,.14);text-align:center;color:#98a2b3;font-size:12px;margin-top:25px;padding-top:14px}
.float-wa{position:fixed;right:26px;bottom:26px;background:#28c76f;color:#fff;width:58px;height:58px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:30px;box-shadow:0 10px 26px rgba(40,199,111,.35);z-index:50}
.page-hero{background:linear-gradient(90deg,#fff,#f1f6fb);padding:58px 0;border-bottom:1px solid var(--line)}
.page-hero h1{font-size:42px;margin:8px 0 10px;color:#101828}
.page-hero p{max-width:760px;line-height:1.7;color:#475467}
.detail-hero{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center}
.detail-gallery{background:#fff;border:1px solid var(--line);border-radius:8px;padding:24px;display:flex;align-items:center;justify-content:center;min-height:430px}
.detail-gallery img{max-height:360px;object-fit:contain}
.spec-table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line)}
.spec-table th,.spec-table td{border-bottom:1px solid var(--line);padding:12px;text-align:left}
.spec-table th{width:33%;background:#f8fafc}
@media(max-width:1100px){
  .nav{gap:14px;flex-wrap:wrap}
  .hero-inner,.two-col,.faq-inquiry,.detail-hero{grid-template-columns:1fr}
  .trust-grid{grid-template-columns:repeat(3,1fr)}
  .category-grid{grid-template-columns:repeat(3,1fr)}
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .custom-band{grid-template-columns:1fr}
  .case-grid,.factory-grid{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:720px){
  .topbar .container,.header .container{align-items:flex-start;flex-direction:column}
  .logo img{width:58px;height:58px}
  .hero h1{font-size:36px}
  .hero h2{font-size:20px}
  .hero-inner{padding:34px 0}
  .trust-grid,.category-grid,.product-grid,.case-grid,.factory-grid,.form-grid,.footer-grid{grid-template-columns:1fr}
  .custom-icons{grid-template-columns:repeat(2,1fr)}
  .footer-cta .container{flex-direction:column;align-items:flex-start}
}

/* ===== BX-D171 Product Image Gallery ===== */
.pg-gallery{display:flex;flex-direction:column;gap:14px}
.pg-main{background:#fff;border:1px solid var(--line);border-radius:8px;padding:24px;display:flex;align-items:center;justify-content:center;min-height:430px;cursor:zoom-in;position:relative;overflow:hidden}
.pg-main img{max-width:100%;max-height:380px;object-fit:contain;transition:transform .25s ease}
.pg-main:hover img{transform:scale(1.03)}
.pg-zoom-hint{position:absolute;right:12px;bottom:12px;background:rgba(5,62,134,.85);color:#fff;font-size:12px;padding:5px 10px;border-radius:20px;pointer-events:none}
.pg-thumbs{display:flex;gap:10px}
.pg-thumb{flex:1;background:#fff;border:2px solid var(--line);border-radius:6px;padding:6px;cursor:pointer;display:flex;align-items:center;justify-content:center;height:84px;transition:border-color .2s ease}
.pg-thumb img{max-width:100%;max-height:70px;object-fit:contain}
.pg-thumb.active{border-color:var(--red)}
.pg-thumb:hover{border-color:var(--blue2)}

/* Lightbox */
.pg-lightbox{position:fixed;inset:0;background:rgba(10,18,34,.92);z-index:9999;display:none;align-items:center;justify-content:center;flex-direction:column}
.pg-lightbox.open{display:flex}
.pg-lb-stage{position:relative;width:100%;max-width:900px;height:72vh;display:flex;align-items:center;justify-content:center;padding:0 16px}
.pg-lb-stage img{max-width:100%;max-height:100%;object-fit:contain;border-radius:6px;-webkit-user-select:none;user-select:none}
.pg-lb-close{position:absolute;top:18px;right:24px;width:46px;height:46px;border:none;border-radius:50%;background:rgba(255,255,255,.12);color:#fff;font-size:26px;line-height:1;cursor:pointer;transition:background .2s}
.pg-lb-close:hover{background:var(--red)}
.pg-lb-arrow{position:absolute;top:50%;transform:translateY(-50%);width:52px;height:52px;border:none;border-radius:50%;background:rgba(255,255,255,.12);color:#fff;font-size:30px;line-height:1;cursor:pointer;transition:background .2s;z-index:2}
.pg-lb-arrow:hover{background:var(--blue2)}
.pg-lb-prev{left:18px}
.pg-lb-next{right:18px}
.pg-lb-thumbs{display:flex;gap:10px;margin-top:18px;flex-wrap:wrap;justify-content:center}
.pg-lb-thumb{width:70px;height:60px;border:2px solid transparent;border-radius:6px;background:#fff;padding:5px;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:.6;transition:opacity .2s,border-color .2s}
.pg-lb-thumb img{max-width:100%;max-height:100%;object-fit:contain}
.pg-lb-thumb.active{opacity:1;border-color:var(--red)}
.pg-lb-counter{color:#cdd5e0;font-size:13px;margin-top:12px;letter-spacing:1px}
@media(max-width:700px){
  .pg-main{min-height:300px}
  .pg-main img{max-height:260px}
  .pg-lb-stage{height:60vh}
  .pg-lb-arrow{width:42px;height:42px;font-size:24px}
  .pg-lb-close{top:10px;right:12px}
}