:root{--c-primary:#f08200;--c-primary-d:#d67400;--c-dark:#181a1e;--c-mid:#555;--c-light:#fafafa;--c-gray:#666;--c-border:#e8e8e8;}
*{box-sizing:border-box;margin:0;padding:0;}
body{font-family:Arial,Helvetica,"Segoe UI",sans-serif;color:#222;line-height:1.6;background:#fff;}
a{color:var(--c-dark);text-decoration:none;}
a:hover{color:var(--c-primary);}
img{max-width:100%;display:block;}
.container{max-width:1200px;margin:0 auto;padding:0 20px;}

/* topbar */
.topbar{background:var(--c-dark);color:#ccc;font-size:.85rem;}
.topbar-inner{max-width:1200px;margin:0 auto;padding:6px 20px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:6px;}
.topbar a{color:#ccc;}
.topbar a:hover{color:#fff;}
.topbar-contact{display:flex;gap:18px;flex-wrap:wrap;}
.topbar-social{display:flex;gap:14px;}

/* nav */
.nav{background:#fff;border-bottom:1px solid var(--c-border);position:sticky;top:0;z-index:100;}
.nav-inner{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;height:64px;}
.nav-logo{display:flex;align-items:center;font-weight:800;font-size:1.25rem;color:var(--c-dark);}
.nav-logo img{height:38px;width:auto;}
.nav-brand-text{font-weight:800;font-size:1.2rem;color:var(--c-dark);}
.nav-menu{list-style:none;display:flex;gap:2px;align-items:center;}
.nav-menu a{display:block;padding:8px 13px;color:#222;font-weight:600;font-size:.93rem;border-radius:4px;}
.nav-menu a:hover{color:var(--c-primary);}
.caret{font-size:.7rem;margin-left:3px;color:#999;}
.has-sub{position:relative;}
.submenu{display:none;position:absolute;top:100%;left:0;background:#fff;border:1px solid var(--c-border);border-radius:6px;min-width:180px;list-style:none;padding:6px;box-shadow:0 8px 24px rgba(0,0,0,.1);}
.has-sub:hover .submenu{display:block;}
.submenu a{padding:8px 14px;font-weight:500;}
.nav-toggle{display:none;background:none;border:none;font-size:1.6rem;cursor:pointer;color:var(--c-dark);}

/* hero slider */
.hero-slider{position:relative;height:520px;overflow:hidden;background:var(--c-dark);}
.slides{height:100%;}
.slide{position:absolute;inset:0;opacity:0;transition:opacity .6s;display:flex;align-items:center;}
.slide.active{opacity:1;}
.slide-bg{position:absolute;inset:0;background-size:cover;background-position:center;}
.slide-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.72),rgba(0,0,0,.35));}
.slide-content{position:relative;z-index:2;max-width:1200px;margin:0 auto;padding:0 20px;color:#fff;width:100%;}
.slide-content h2{font-size:2.6rem;line-height:1.2;margin-bottom:14px;max-width:640px;}
.slide-content p{font-size:1.1rem;opacity:.95;margin-bottom:24px;max-width:600px;}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;}
.slide-btn{position:absolute;top:50%;transform:translateY(-50%);background:rgba(0,0,0,.35);color:#fff;border:none;width:44px;height:44px;font-size:1.6rem;cursor:pointer;border-radius:50%;z-index:3;}
.slide-btn:hover{background:var(--c-primary);}
.slide-btn.prev{left:16px;}
.slide-btn.next{right:16px;}
.slide-dots{position:absolute;bottom:18px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:3;}
.slide-dots span{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.5);cursor:pointer;}
.slide-dots span.active{background:var(--c-primary);}

/* buttons */
.btn{display:inline-block;padding:12px 26px;border-radius:4px;font-weight:700;font-size:1rem;border:2px solid transparent;cursor:pointer;}
.btn-primary{background:var(--c-primary);color:#fff;}
.btn-primary:hover{background:var(--c-primary-d);color:#fff;}
.btn-ghost{background:transparent;color:#fff;border-color:#fff;}
.btn-ghost:hover{background:#fff;color:var(--c-dark);}

/* adv strip */
.adv-strip{background:#fff;border-bottom:1px solid var(--c-border);}
.adv-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;padding:34px 20px;}
.adv-item{text-align:center;padding:6px 10px;}
.adv-icon{font-size:1.8rem;margin-bottom:8px;}
.adv-item h3{font-size:1rem;color:var(--c-dark);margin-bottom:6px;}
.adv-item p{font-size:.82rem;color:var(--c-gray);}

/* sections */
.section{padding:60px 0;}
.section-alt{background:var(--c-light);}
.section-title{font-size:2rem;text-align:center;margin-bottom:10px;color:var(--c-dark);}
.section-sub{text-align:center;color:var(--c-gray);max-width:680px;margin:0 auto 40px;}
.section-cta{background:var(--c-dark);color:#fff;text-align:center;}
.section-cta h2{font-size:2rem;margin-bottom:12px;}
.section-cta p{margin-bottom:24px;opacity:.9;}
.section-cta .btn-primary{margin-top:6px;}

/* category cards */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.cat-card{background:#fff;border:1px solid var(--c-border);border-radius:8px;padding:28px;display:block;transition:.2s;color:inherit;}
.cat-card:hover{border-color:var(--c-primary);transform:translateY(-3px);box-shadow:0 10px 30px rgba(0,0,0,.08);}
.cat-card-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;}
.cat-card h3{font-size:1.4rem;color:var(--c-dark);}
.cat-card p{color:var(--c-gray);font-size:.93rem;margin-bottom:14px;}
.cat-count{font-size:.8rem;color:var(--c-primary);font-weight:700;background:#fff4e6;padding:3px 10px;border-radius:20px;}
.cat-link{font-weight:700;color:var(--c-primary);font-size:.9rem;}
.cat-big{padding:0;overflow:hidden;}
.cat-big .cat-card-img{aspect-ratio:16/9;background:#f8f8f8;overflow:hidden;}
.cat-big .cat-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s;}
.cat-big:hover .cat-card-img img{transform:scale(1.05);}
.cat-big .cat-card-head,.cat-big p,.cat-big .cat-link{margin-left:20px;margin-right:20px;}
.cat-big .cat-card-head{margin-top:18px;}
.cat-big .cat-link{display:inline-block;margin-bottom:20px;}

/* steps */
.steps-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.step{background:#fff;border:1px solid var(--c-border);border-radius:8px;padding:26px;position:relative;}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;background:var(--c-primary);color:#fff;font-weight:800;border-radius:50%;margin-bottom:14px;}
.step h3{font-size:1.1rem;color:var(--c-dark);margin-bottom:8px;}
.step p{font-size:.9rem;color:var(--c-gray);}

/* stats */
.stats-section{background:var(--c-dark);color:#fff;}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center;padding:20px 20px;}
.stat-num{font-size:2.6rem;font-weight:800;color:var(--c-primary);line-height:1.1;}
.stat p{font-size:.9rem;opacity:.85;margin-top:6px;}

/* why grid */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.why-item{background:#fff;border-radius:8px;padding:26px;border:1px solid var(--c-border);}
.why-item h3{color:var(--c-dark);margin-bottom:8px;font-size:1.05rem;}
.why-item p{color:var(--c-gray);font-size:.9rem;}

/* certifications */
.cert-grid{display:flex;justify-content:center;gap:30px;flex-wrap:wrap;align-items:center;}
.cert-item{background:#fff;border:1px solid var(--c-border);border-radius:8px;padding:18px;width:140px;height:100px;display:flex;align-items:center;justify-content:center;}
.cert-item img{max-height:70px;width:auto;object-fit:contain;}

/* factory grid */
.factory-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin:20px 0;}
.factory-item{background:#fff;border:1px solid var(--c-border);border-radius:8px;overflow:hidden;}
.factory-img{aspect-ratio:4/3;background:#f8f8f8;overflow:hidden;}
.factory-img img{width:100%;height:100%;object-fit:cover;transition:transform .3s;}
.factory-item:hover .factory-img img{transform:scale(1.05);}
.factory-cap{padding:14px 16px;}
.factory-cap h3{font-size:1rem;color:var(--c-dark);margin-bottom:4px;}
.factory-cap p{font-size:.85rem;color:var(--c-gray);}

/* clients */
.clients-row{display:flex;justify-content:center;gap:60px;flex-wrap:wrap;align-items:center;}
.client-name{font-size:1.8rem;font-weight:800;color:#bbb;letter-spacing:1px;text-transform:uppercase;}

/* news card */
.news-card{display:block;max-width:760px;margin:0 auto;background:#fff;border:1px solid var(--c-border);border-radius:8px;padding:30px;transition:.2s;}
.news-card:hover{border-color:var(--c-primary);box-shadow:0 10px 30px rgba(0,0,0,.08);}
.news-card h3{font-size:1.3rem;color:var(--c-dark);margin-bottom:10px;}
.news-card p{color:var(--c-gray);margin-bottom:12px;}

/* product cards */
.pcard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.subcat-block{margin-bottom:50px;}
.subcat-title{font-size:1.5rem;color:var(--c-dark);margin-bottom:20px;padding-bottom:10px;border-bottom:2px solid var(--c-light);}
.subcat-title a{color:var(--c-dark);}
.subcat-title a:hover{color:var(--c-primary);}
.fc-title{font-size:2rem;color:var(--c-dark);margin-bottom:30px;}
.pcard{background:#fff;border:1px solid var(--c-border);border-radius:8px;overflow:hidden;display:block;color:inherit;transition:.2s;}
.pcard:hover{transform:translateY(-3px);box-shadow:0 10px 25px rgba(0,0,0,.1);border-color:var(--c-primary);}
.pcard-img{aspect-ratio:4/5;background:#f8f8f8;overflow:hidden;}
.pcard-img img{width:100%;height:100%;object-fit:cover;}
.pcard-body{padding:12px 14px;}
.pcard-body h3{font-size:.9rem;font-weight:600;color:var(--c-dark);line-height:1.35;margin-bottom:4px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.pcard-cat{font-size:.78rem;color:var(--c-primary);font-weight:600;}

/* page head */
.page-head{background:var(--c-dark);color:#fff;padding:50px 0;}
.page-head h1{font-size:2.2rem;}
.page-head p{max-width:760px;margin-top:10px;opacity:.92;}
.breadcrumb{font-size:.9rem;padding:16px 20px;}
.breadcrumb a{color:#cfd8e3;}
.page-head-prod{background:#fff;color:#222;border-bottom:1px solid var(--c-border);padding:0;}
.page-head-prod .breadcrumb a{color:var(--c-mid);}

/* content */
.content{max-width:820px;margin:0 auto;}
.content h2{font-size:1.5rem;color:var(--c-dark);margin:34px 0 14px;}
.content h3{font-size:1.2rem;color:var(--c-dark);margin:24px 0 10px;}
.content p{margin-bottom:16px;}

/* feature list */
.feat-list{list-style:none;margin:16px 0;}
.feat-list li{position:relative;padding-left:24px;margin-bottom:10px;}
.feat-list li::before{content:"✓";position:absolute;left:0;color:var(--c-primary);font-weight:700;}

/* specs table */
.spec-table{overflow-x:auto;margin:18px 0;border:1px solid var(--c-border);border-radius:8px;}
.spec-table table{width:100%;border-collapse:collapse;font-size:.95rem;}
.spec-table th{background:var(--c-light);text-align:left;padding:12px 16px;width:200px;color:var(--c-dark);font-weight:700;}
.spec-table td{padding:12px 16px;border-bottom:1px solid var(--c-border);}
.spec-table tr:last-child td{border-bottom:none;}

/* product detail */
.prod-layout{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:start;}
.prod-main{background:#f8f8f8;border-radius:8px;overflow:hidden;margin-bottom:14px;aspect-ratio:4/5;}
.prod-main img{width:100%;height:100%;object-fit:cover;}
.prod-thumbs{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;}
.prod-thumbs img{aspect-ratio:1;object-fit:cover;border-radius:6px;cursor:pointer;border:2px solid transparent;}
.prod-thumbs img:hover{border-color:var(--c-primary);}
.prod-info h1{font-size:1.6rem;color:var(--c-dark);margin-bottom:14px;line-height:1.3;}
.prod-intro{font-size:1.05rem;color:#495057;margin-bottom:20px;}
.prod-cta{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px;}

/* contact */
.contact-layout{display:grid;grid-template-columns:1fr 1fr;gap:50px;}
.contact-list{list-style:none;margin:16px 0;}
.contact-list li{margin-bottom:10px;}
.qr-row{display:flex;gap:20px;margin:20px 0;}
.qr-item{text-align:center;}
.qr-item img{width:130px;height:130px;object-fit:contain;border:1px solid var(--c-border);border-radius:8px;margin-bottom:8px;}
.qr-item span{font-size:.9rem;color:var(--c-gray);}
.contact-form form{display:flex;flex-direction:column;gap:14px;}
.contact-form label{font-weight:600;font-size:.9rem;display:flex;flex-direction:column;gap:6px;color:var(--c-dark);}
.contact-form input,.contact-form textarea{padding:12px;border:1px solid var(--c-border);border-radius:6px;font-size:1rem;font-family:inherit;}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--c-primary);}

/* news */
.news-post{background:#fff;border:1px solid var(--c-border);border-radius:8px;padding:40px;}

/* faq */
.faq-list{max-width:820px;margin:0 auto;}
.faq-item{border:1px solid var(--c-border);border-radius:8px;margin-bottom:12px;overflow:hidden;background:#fff;}
.faq-q{width:100%;background:none;border:none;padding:18px 22px;display:flex;justify-content:space-between;align-items:center;cursor:pointer;font-size:1.02rem;font-weight:600;color:var(--c-dark);text-align:left;font-family:inherit;}
.faq-q:hover{color:var(--c-primary);}
.faq-icon{font-size:1.3rem;color:var(--c-primary);}
.faq-a{display:none;padding:0 22px 18px;color:var(--c-gray);}
.faq-a.open{display:block;}

/* footer */
.footer{background:var(--c-dark);color:#ccc;padding:50px 0 0;}
.footer-inner{max-width:1200px;margin:0 auto;padding:0 20px;display:grid;grid-template-columns:1.3fr 1fr 1fr 1.2fr;gap:36px;}
.footer h3{color:#fff;margin-bottom:16px;font-size:1.05rem;}
.footer p,.footer li{font-size:.88rem;line-height:1.6;}
.footer ul{list-style:none;}
.footer ul li{margin-bottom:8px;}
.footer a{color:#ccc;}
.footer a:hover{color:#fff;}
.footer-social{display:flex;gap:12px;margin-top:14px;flex-wrap:wrap;}
.footer-social a{background:#2a2d33;padding:6px 14px;border-radius:4px;font-size:.82rem;}
.footer-social a:hover{background:var(--c-primary);color:#fff;}
.footer-bottom{text-align:center;padding:22px;border-top:1px solid #2a2d33;margin-top:40px;font-size:.82rem;color:#888;}

/* responsive */
@media(max-width:900px){
  .hero-slider{height:420px;}
  .slide-content h2{font-size:1.9rem;}
  .adv-grid{grid-template-columns:repeat(3,1fr);}
  .cat-grid{grid-template-columns:1fr 1fr;}
  .steps-grid{grid-template-columns:1fr 1fr;}
  .stats-grid{grid-template-columns:1fr 1fr;}
  .why-grid{grid-template-columns:1fr 1fr;}
  .factory-grid{grid-template-columns:1fr 1fr;}
  .pcard-grid{grid-template-columns:repeat(3,1fr);}
  .prod-layout{grid-template-columns:1fr;}
  .contact-layout{grid-template-columns:1fr;}
  .footer-inner{grid-template-columns:1fr 1fr;}
}
@media(max-width:620px){
  .hero-slider{height:380px;}
  .slide-content h2{font-size:1.5rem;}
  .adv-grid,.cat-grid,.steps-grid,.stats-grid,.why-grid,.factory-grid,.pcard-grid,.footer-inner{grid-template-columns:1fr;}
  .nav-menu{display:none;position:absolute;top:64px;left:0;right:0;background:#fff;flex-direction:column;padding:12px;border-bottom:1px solid var(--c-border);}
  .nav-menu.open{display:flex;}
  .nav-toggle{display:block;}
  .submenu{position:static;box-shadow:none;border:none;padding-left:16px;}
  .news-post{padding:24px;}
  .topbar-inner{justify-content:center;text-align:center;}
}