*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --accent:#C44536;
  --accent-dark:#A8372A;
  --accent-light:#F5E6E3;
  --accent-pale:#FDF5F3;
  --bg-white:#FAFAF8;
  --bg-alt:#F4F2EF;
  --text-dark:#1E1E24;
  --text-muted:#6B6B72;
  --gray-100:#F4F2EF;
  --gray-200:#E8E5E1;
  --white-pure:#FFFFFF;
  --shadow-sm:0 1px 3px rgba(0,0,0,.05);
  --shadow-md:0 4px 20px rgba(0,0,0,.07);
  --shadow-lg:0 10px 40px rgba(0,0,0,.1);
  --radius:14px;
  --radius-sm:8px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC",-apple-system,sans-serif;
  --t:.3s cubic-bezier(.4,0,.2,1);
}

html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--text-dark);background:var(--bg-white);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}

h1,h2,h3,h4{font-weight:700;line-height:1.3}
h2{font-size:clamp(28px,4vw,40px)}
h3{font-size:clamp(18px,2.4vw,22px)}
a{color:var(--accent);text-decoration:none;transition:var(--t)}
a:hover{color:var(--accent-dark)}

img{max-width:100%;display:block}
.img-wrap{position:relative;overflow:hidden;background:linear-gradient(135deg,var(--gray-200),var(--accent-pale))}
.img-wrap img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.img-wrap img.broken{display:none}

.preloader{position:fixed;inset:0;z-index:9999;background:var(--bg-white);display:flex;align-items:center;justify-content:center;transition:opacity .4s,visibility .4s}
.preloader.hidden{opacity:0;visibility:hidden;pointer-events:none}
.preloader-spinner{width:38px;height:38px;border:3px solid var(--gray-200);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

.header{position:fixed;top:0;left:0;right:0;z-index:1000;padding:20px 0;transition:var(--t);background:var(--white-pure);box-shadow:0 1px 6px rgba(0,0,0,.06)}
.header-inner{max-width:1400px;margin:0 auto;padding:0 32px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.header.scrolled{padding:12px 0}

.logo{display:flex;align-items:center;gap:12px}
.logo-text{font-size:18px;font-weight:700;letter-spacing:2px;color:var(--text-dark)}

.nav{display:flex;gap:30px;list-style:none;align-items:center}
.nav a{font-size:14px;font-weight:500;letter-spacing:.5px;padding:6px 0;color:var(--text-muted);position:relative}
.nav a::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--accent);transition:var(--t)}
.nav a:hover{color:var(--accent)}
.nav a:hover::after{width:100%}
.nav a.active{color:var(--accent)}
.nav a.active::after{width:100%}

.header-phone{color:var(--accent);font-weight:700;font-size:15px;white-space:nowrap}

.menu-btn{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px;z-index:1001}
.menu-btn span{width:26px;height:2px;background:var(--text-dark);border-radius:2px;transition:var(--t)}

@media(max-width:960px){
  .nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--white-pure);flex-direction:column;padding:20px 32px;gap:0;box-shadow:0 8px 24px rgba(0,0,0,.1)}
  .nav.active{display:flex}
  .nav li{width:100%}
  .nav a{padding:14px 0;display:block;border-bottom:1px solid var(--gray-100);color:var(--text-dark)!important}
  .menu-btn{display:flex}
}

section{padding:clamp(56px,7vw,100px) 32px}
.sec-wide{max-width:1400px;margin:0 auto}
.sec-narrow{max-width:1200px;margin:0 auto}

.sec-label{display:inline-block;font-size:13px;font-weight:700;letter-spacing:3px;text-transform:uppercase;margin-bottom:14px;color:var(--accent)}
.sec-label::before{content:'';display:inline-block;width:22px;height:2px;background:var(--accent);margin-right:10px;vertical-align:middle}
.sec-header{margin-bottom:48px}
.sec-header h2{margin-bottom:14px;color:var(--accent-dark)}
.sec-header p{color:var(--text-muted);font-size:16px;max-width:660px}
.sec-header.centered{text-align:center}
.sec-header.centered p{margin:0 auto}

.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 30px;border-radius:50px;font-size:15px;font-weight:600;cursor:pointer;transition:var(--t);border:none;letter-spacing:1px}
.btn-primary{background:var(--accent);color:var(--white-pure)}
.btn-primary:hover{background:var(--accent-dark);color:var(--white-pure);transform:translateY(-2px);box-shadow:0 8px 24px rgba(196,69,54,.5)}
.btn-line{background:transparent;color:var(--white-pure);border:2px solid rgba(255,255,255,.4)}
.btn-line:hover{border-color:var(--white-pure);color:var(--white-pure);transform:translateY(-2px)}
.btn-dark{background:var(--accent-dark);color:var(--white-pure)}
.btn-dark:hover{background:var(--accent);color:var(--white-pure);transform:translateY(-2px);box-shadow:0 8px 20px rgba(168,55,42,.4)}

.hero{min-height:100vh;display:flex;align-items:center;position:relative;overflow:hidden;padding:120px 32px 80px;background:url('../images/product-red-set-20251104.jpg') center/cover no-repeat}
.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(135deg,rgba(20,20,26,.88) 0%,rgba(20,20,26,.7) 50%,rgba(20,20,26,.82) 100%);z-index:0}
.hero-grid{max-width:900px;margin:0 auto;width:100%;text-align:center;position:relative;z-index:1}

.hero-eyebrow{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);color:rgba(255,255,255,.9);padding:7px 16px;border-radius:50px;font-size:13px;letter-spacing:2px;margin-bottom:24px;margin-left:auto;margin-right:auto}
.hero h1{font-size:clamp(36px,5vw,58px);color:var(--white-pure);line-height:1.15;margin-bottom:20px}
.hero h1 em{color:var(--accent);font-style:normal}
.hero h1 span{display:block;font-size:clamp(16px,1.8vw,20px);color:rgba(255,255,255,.55);font-weight:400;letter-spacing:3px;margin-top:10px}
.hero-desc{font-size:17px;color:rgba(255,255,255,.7);max-width:560px;margin:0 auto 32px;line-height:1.9}

.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin:0 auto 36px;max-width:560px}
.h-stat{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.15);border-radius:12px;padding:14px 10px;text-align:center;box-shadow:none}
.h-stat-val{font-size:24px;font-weight:800;color:var(--white-pure);line-height:1.2}
.h-stat-val small{font-size:12px;font-weight:500;color:rgba(255,255,255,.5)}
.h-stat-lb{font-size:11px;color:rgba(255,255,255,.5);margin-top:4px;letter-spacing:1px}

@media(max-width:960px){.hero-stats,.factory-stats{grid-template-columns:repeat(2,1fr)}}

.page-hero{min-height:40vh;display:flex;align-items:center;position:relative;overflow:hidden;padding:160px 32px 60px;background:linear-gradient(135deg,var(--accent-dark) 0%,var(--accent) 100%)}
.page-hero::before{content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%23ffffff' fill-opacity='.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6z'/%3E%3C/g%3E%3C/svg%3E")}
.page-hero .hero-grid{max-width:1100px}
.page-hero h1{font-size:clamp(28px,4vw,48px)}

.patents-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.patent-card{background:var(--white-pure);border:1px solid var(--gray-200);border-radius:var(--radius);padding:36px 28px;text-align:center;transition:var(--t);position:relative}
.patent-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:var(--accent)}
.patent-num{position:absolute;top:16px;left:20px;font-size:48px;font-weight:800;color:var(--gray-200);line-height:1}
.patent-icon{width:60px;height:60px;margin:0 auto 18px;background:var(--accent-pale);border-radius:50%;display:flex;align-items:center;justify-content:center}
.patent-icon svg{width:26px;height:26px;stroke:var(--accent);fill:none;stroke-width:2}
.patent-card h4{font-size:18px;color:var(--accent-dark);margin-bottom:12px}
.patent-card p{font-size:14px;color:var(--text-muted);margin:0;line-height:1.8}
.patent-img{width:100%;height:120px;margin-top:20px;border-radius:var(--radius-sm);overflow:hidden;background:var(--gray-100)}
.patent-img img{width:100%;height:100%;object-fit:cover}

.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(36px,5vw,72px);align-items:center}
.about-imgs{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.about-imgs .img-wrap{border-radius:var(--radius-sm)}
.about-imgs .big{grid-row:span 2;aspect-ratio:3/4}
.about-imgs .sm{aspect-ratio:4/3}
.about-text h3{color:var(--accent-dark);margin-bottom:16px;font-size:26px}
.about-text p{color:var(--text-muted);margin-bottom:16px;font-size:15.5px}
.about-points{display:grid;gap:12px;margin-top:22px}
.ap{display:flex;gap:12px;align-items:flex-start;padding:13px 16px;background:var(--gray-100);border-radius:10px;border-left:3px solid var(--accent)}
.ap-icon{width:32px;height:32px;background:var(--white-pure);border-radius:8px;display:flex;align-items:center;justify-content:center;flex-shrink:0;box-shadow:var(--shadow-sm)}
.ap-icon svg{width:15px;height:15px;stroke:var(--accent);fill:none;stroke-width:2.5}
.ap b{font-size:14px;color:var(--accent-dark);display:block}
.ap span{font-size:13px;color:var(--text-muted)}

.factory-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:40px}
.fs-card{background:var(--white-pure);border:1px solid var(--gray-200);border-radius:var(--radius);padding:24px 20px;text-align:center;transition:var(--t)}
.fs-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--accent)}
.fs-val{font-size:clamp(24px,3vw,36px);font-weight:800;color:var(--accent);line-height:1.1}
.fs-unit{font-size:14px;color:var(--text-muted);font-weight:500}
.fs-lb{font-size:13px;color:var(--text-muted);margin-top:8px}

.factory-hero{background:var(--accent-pale);padding:clamp(40px,6vw,80px) 32px}
.factory-detail{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.factory-detail .img-wrap{border-radius:var(--radius);aspect-ratio:16/10}
.factory-detail ul{list-style:none;display:grid;gap:16px}
.factory-detail li{display:flex;gap:12px;align-items:flex-start}
.factory-detail li::before{content:'';width:6px;height:6px;background:var(--accent);border-radius:50%;margin-top:10px;flex-shrink:0}

.products-bg{background:var(--accent-pale)}
.prod-tabs{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:40px}
.prod-tab{padding:10px 22px;border-radius:50px;border:1.5px solid var(--accent-light);background:var(--white-pure);font-size:14px;font-weight:600;color:var(--text-muted);cursor:pointer;transition:var(--t)}
.prod-tab:hover{border-color:var(--accent);color:var(--accent)}
.prod-tab.active{background:var(--accent);border-color:var(--accent);color:var(--white-pure)}

.prod-panel{display:none}
.prod-panel.active{display:block;animation:fadeIn .4s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

.prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.prod-card{background:var(--white-pure);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);transition:var(--t)}
.prod-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
.prod-card .img-wrap{aspect-ratio:1/1}
.prod-card:hover .img-wrap img{transform:scale(1.07)}

.craft-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.craft-card{background:var(--white-pure);border:1px solid var(--gray-200);border-radius:var(--radius);padding:28px 22px;transition:var(--t);position:relative;overflow:hidden}
.craft-card:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:var(--shadow-md)}
.craft-num{position:absolute;top:14px;right:18px;font-size:40px;font-weight:800;color:var(--gray-200);line-height:1}
.craft-card:hover .craft-num{color:rgba(196,69,54,.1)}
.craft-icon{width:46px;height:46px;background:linear-gradient(135deg,#C44536,#D4A574);border-radius:11px;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.craft-icon svg{width:20px;height:20px;stroke:var(--white-pure);fill:none;stroke-width:2}
.craft-card h4{font-size:16px;color:var(--accent-dark);margin-bottom:8px}
.craft-card p{font-size:13px;color:var(--text-muted);margin:0;line-height:1.7}

.qual-banner{background:linear-gradient(135deg,#A8372A,#C44536);border-radius:var(--radius);padding:clamp(32px,4vw,56px);color:var(--white-pure);margin-top:56px}
.qual-banner h3{color:var(--white-pure);margin-bottom:8px;font-size:22px}
.qual-banner>p{color:rgba(255,255,255,.65);font-size:14px;margin-bottom:24px}
.qual-list{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.ql{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);border-radius:10px;padding:18px 16px}
.ql b{display:block;font-size:14px;margin-bottom:6px;color:var(--white-pure)}
.ql span{font-size:12.5px;color:rgba(255,255,255,.65);line-height:1.6;display:block}

.export-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(36px,5vw,72px);align-items:center}
.export-imgs{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.export-imgs .img-wrap{border-radius:var(--radius-sm);aspect-ratio:4/3}
.export-text h3{color:var(--accent-dark);margin-bottom:16px;font-size:26px}
.export-text p{color:var(--text-muted);font-size:15.5px;margin-bottom:14px}
.export-countries{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0}
.ec-tag{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;background:var(--white-pure);border:1.5px solid var(--accent-light);border-radius:50px;font-size:14px;font-weight:600;color:var(--accent-dark);transition:var(--t)}
.ec-tag:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.export-data{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:24px}
.ed{background:var(--white-pure);border:1px solid var(--gray-200);border-radius:10px;padding:18px 16px;text-align:center}
.ed-val{font-size:26px;font-weight:800;color:var(--accent);line-height:1.1}
.ed-lb{font-size:12.5px;color:var(--text-muted);margin-top:6px}
.ed-note{font-size:11px;color:var(--accent-light);margin-top:3px}

.certs-bg{background:var(--accent-pale)}
.cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cert-card{background:var(--white-pure);border-radius:var(--radius);padding:28px 24px;box-shadow:var(--shadow-sm);transition:var(--t);display:flex;flex-direction:column;gap:14px;border-top:4px solid var(--accent-light)}
.cert-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-top-color:var(--accent)}
.cert-head{display:flex;align-items:center;gap:14px}
.cert-badge{width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,#C44536,#D4A574);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.cert-badge svg{width:22px;height:22px;stroke:var(--white-pure);fill:none;stroke-width:2}
.cert-head h4{font-size:16px;color:var(--accent-dark);line-height:1.35}
.cert-card p{font-size:13px;color:var(--text-muted);margin:0;flex:1}
.cert-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 18px;border-radius:8px;background:var(--accent-pale);color:var(--accent-dark);font-size:13px;font-weight:600;transition:var(--t)}
.cert-btn:hover{background:var(--accent);color:var(--white-pure)}
.cert-btn svg{width:14px;height:14px;stroke:currentColor;fill:none;stroke-width:2.5}

.values-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.value-card{background:var(--white-pure);border:1px solid var(--gray-200);border-radius:var(--radius);padding:32px 24px;text-align:center;transition:var(--t)}
.value-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);border-color:var(--accent)}
.value-icon{width:56px;height:56px;margin:0 auto 18px;background:var(--accent-pale);border-radius:50%;display:flex;align-items:center;justify-content:center}
.value-icon svg{width:24px;height:24px;stroke:var(--accent);fill:none;stroke-width:2}
.value-card h4{font-size:18px;color:var(--accent-dark);margin-bottom:10px}
.value-card p{font-size:14px;color:var(--text-muted);margin:0;line-height:1.7}
@media(max-width:1024px){.values-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.values-grid{grid-template-columns:1fr}}

.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(36px,5vw,72px);align-items:start}
.contact-map{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-md);aspect-ratio:16/10}
.contact-info h3{color:var(--accent-dark);margin-bottom:24px;font-size:24px}
.contact-items{display:grid;gap:16px}
.ci{display:flex;gap:14px;align-items:flex-start;padding:15px;border-radius:12px;transition:var(--t)}
.ci:hover{background:var(--gray-100)}
.ci-icon{width:42px;height:42px;background:var(--accent-pale);border-radius:10px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.ci-icon svg{width:17px;height:17px;stroke:var(--accent);fill:none;stroke-width:2}
.ci b{display:block;font-size:14px;color:var(--accent-dark)}
.ci span{font-size:14px;color:var(--text-muted)}

.footer{background:var(--accent-dark);color:rgba(255,255,255,.5);padding:48px 32px 22px;font-size:14px}
.footer-grid{max-width:1400px;margin:0 auto 36px;display:grid;grid-template-columns:2fr 1fr 1fr;gap:44px}
.footer-brand h3{font-size:19px;color:var(--white-pure);margin-bottom:10px;letter-spacing:1px}
.footer-brand p{color:rgba(255,255,255,.35);line-height:1.8;font-size:13.5px}
.footer-title{font-size:13px;color:var(--white-pure);margin-bottom:14px;letter-spacing:2px;text-transform:uppercase}
.footer-links{list-style:none}
.footer-links li{margin-bottom:8px}
.footer-links a{color:rgba(255,255,255,.4);font-size:13.5px}
.footer-links a:hover{color:var(--accent)}
.footer-bot{border-top:1px solid rgba(255,255,255,.07);padding-top:18px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;max-width:1400px;margin:0 auto;font-size:12.5px;color:rgba(255,255,255,.3)}

@media(max-width:1024px){
  .about-grid,.export-grid,.contact-grid,.factory-detail{grid-template-columns:1fr}
  .prod-grid{grid-template-columns:repeat(3,1fr)}
  .craft-grid{grid-template-columns:repeat(2,1fr)}
  .cert-grid,.patents-grid{grid-template-columns:repeat(2,1fr)}
  .qual-list,.factory-stats{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .prod-grid,.craft-grid,.cert-grid,.qual-list,.export-data,.patents-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  section{padding:44px 20px}
  .hero{padding:100px 20px 60px}
  .hero-stats,.factory-stats{grid-template-columns:repeat(2,1fr)}
  .h-stat-val{font-size:20px}
  .about-imgs{grid-template-columns:1fr}
  .about-imgs .big{grid-row:auto;aspect-ratio:4/3}
  .export-imgs{grid-template-columns:1fr}
}

.lang-switch{display:flex;align-items:center;gap:4px;margin-left:12px}
.lang-btn{background:none;border:1px solid var(--gray-200);color:var(--text-muted);padding:4px 8px;border-radius:4px;font-size:12px;cursor:pointer;transition:var(--t)}
.lang-btn:hover{border-color:var(--accent);color:var(--accent)}
.lang-btn.active{background:var(--accent);border-color:var(--accent);color:var(--white-pure)}