/* ---------- tokens ---------- */
:root{
  --ink:#0E1A24;
  --ink-soft:#3D4C59;
  --muted:#66757F;
  --navy:#12314E;
  --navy-deep:#0B2237;
  --gold:#B08D57;
  --gold-light:#D9C39A;
  --paper:#FAF8F4;
  --white:#FFFFFF;
  --line:#E6E1D7;
  --line-soft:#F1EDE6;
  --r:4px;
  --shadow-sm:0 1px 2px rgba(14,26,36,.06);
  --shadow-md:0 18px 40px -20px rgba(14,26,36,.28);
  --max:1200px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
figure{margin:0}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.022em;line-height:1.14}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:var(--gold-light);color:var(--ink)}

.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.section{padding:clamp(56px,7vw,104px) 0}
.section--white{background:var(--white)}
.section--navy{background:var(--navy);color:#EAEFF3}

/* ---------- type helpers ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-size:11px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;
  color:var(--gold);margin-bottom:18px;
}
.eyebrow::before{content:"";width:26px;height:1px;background:var(--gold);display:block}
.h2{font-size:clamp(26px,3.3vw,42px);max-width:20ch}
.lede{font-size:clamp(15px,1.15vw,17px);color:var(--ink-soft);max-width:62ch;margin-top:18px}
.section--navy .lede{color:#B9C6D2}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:50px;padding:0 26px;border-radius:var(--r);
  font-size:14px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn--primary{background:var(--navy);color:#fff}
.btn--primary:hover{background:var(--navy-deep)}
.btn--ghost{background:transparent;color:var(--ink);border-color:#CFC8BA}
.btn--ghost:hover{border-color:var(--ink);background:#fff}
.btn--gold{background:var(--gold);color:#fff}
.btn--gold:hover{background:#9B7A47}
.btn--sm{height:42px;padding:0 18px;font-size:13px}
.btn svg{width:15px;height:15px;flex:none}

/* ---------- top bar ---------- */
.topbar{
  background:var(--navy-deep);color:#A9BAC8;
  font-size:12px;letter-spacing:.02em;
}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:20px;height:38px}
.topbar ul{display:flex;gap:22px;align-items:center}
.topbar li{display:flex;align-items:center;gap:7px}
.topbar .dot{width:4px;height:4px;border-radius:50%;background:var(--gold);display:block}
.topbar a:hover{color:#fff}

/* ---------- header ---------- */
.site-head{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(1.4) blur(10px);
  border-bottom:1px solid var(--line);
}
.site-head .wrap{display:flex;align-items:center;gap:26px;height:78px}

.brand{display:flex;align-items:center;gap:12px;flex:none}
.brand img{width:46px;height:46px;object-fit:contain}
.brand-txt{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-size:19px;font-weight:700;letter-spacing:.1em}
.brand-sub{font-size:10px;letter-spacing:.16em;color:var(--muted);text-transform:uppercase;margin-top:3px}

.nav{display:flex;gap:30px;margin-left:auto}
.nav a{font-size:14px;font-weight:500;color:var(--ink-soft);padding:6px 0;position:relative}
.nav a::after{
  content:"";position:absolute;left:0;bottom:0;height:1.5px;width:0;background:var(--gold);
  transition:width .25s var(--ease);
}
.nav a:hover{color:var(--ink)}
.nav a:hover::after{width:100%}

.head-cta{display:flex;align-items:center;gap:14px;flex:none}
.head-phone{font-size:13px;color:var(--ink-soft);font-weight:500}
.head-phone b{display:block;font-size:11px;font-weight:600;letter-spacing:.1em;color:var(--muted);text-transform:uppercase}

.burger{display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;border-radius:var(--r);cursor:pointer;align-items:center;justify-content:center}
.burger span{display:block;width:18px;height:1.5px;background:var(--ink);position:relative}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:18px;height:1.5px;background:var(--ink)}
.burger span::before{top:-6px}
.burger span::after{top:6px}

.mobile-nav{display:none;border-bottom:1px solid var(--line);background:#fff}
.mobile-nav.open{display:block}
.mobile-nav ul{padding:8px 24px 20px}
.mobile-nav li+li{border-top:1px solid var(--line-soft)}
.mobile-nav a{display:block;padding:14px 0;font-size:15px;font-weight:500}
.mobile-nav .btn{width:100%;margin-top:12px}

/* ---------- hero ---------- */
.hero{padding:clamp(40px,5vw,72px) 0 clamp(48px,6vw,84px);background:linear-gradient(180deg,#FFFDFA 0%,var(--paper) 100%)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(32px,4vw,64px);align-items:center}
.hero h1{
  font-size:clamp(28px,3.5vw,46px);font-weight:600;letter-spacing:-.03em;line-height:1.12;
  margin-bottom:24px;text-wrap:balance;max-width:19ch;
}
.hero h1 em{
  font-style:normal;color:var(--navy);
  background:linear-gradient(180deg,transparent 62%,rgba(217,195,154,.75) 62%,rgba(217,195,154,.75) 90%,transparent 90%);
  -webkit-box-decoration-break:clone;box-decoration-break:clone;
  padding:0 .06em;margin:0 -.06em;
}
.hero-sub{font-size:clamp(15px,1.2vw,17.5px);color:var(--ink-soft);max-width:56ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:30px;padding-top:26px;border-top:1px solid var(--line)}
.hero-facts li{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ink-soft);font-weight:500}
.hero-facts svg{width:14px;height:14px;color:var(--gold);flex:none}

.hero-media{position:relative;isolation:isolate}
.hero-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:6px;box-shadow:var(--shadow-md)}
.hero-media::before{
  content:"";position:absolute;inset:auto -14px -14px auto;width:52%;height:52%;
  border-right:1px solid var(--gold);border-bottom:1px solid var(--gold);border-radius:0 0 6px 0;z-index:-1;
}
.media-chip{
  position:absolute;left:16px;bottom:16px;display:flex;align-items:center;gap:8px;
  background:rgba(11,34,55,.86);color:#E9EFF4;font-size:11.5px;font-weight:500;
  padding:8px 13px;border-radius:3px;letter-spacing:.02em;backdrop-filter:blur(4px);
}
.media-chip::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--gold-light);display:block}

/* ---------- metrics ---------- */
.metrics{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--white)}
.metrics ul{display:grid;grid-template-columns:repeat(5,1fr)}
.metrics li{padding:30px 26px;border-left:1px solid var(--line-soft)}
.metrics li:first-child{border-left:0;padding-left:0}
.metric-num{font-size:clamp(26px,2.6vw,36px);font-weight:600;letter-spacing:-.03em;line-height:1;font-variant-numeric:tabular-nums}
.metric-num span{color:var(--gold);font-size:.6em;font-weight:500;margin-left:2px}
.metric-label{font-size:12px;color:var(--muted);margin-top:8px;letter-spacing:.02em;line-height:1.4}

/* ---------- section head ---------- */
.sechead{display:flex;justify-content:space-between;align-items:flex-end;gap:40px;flex-wrap:wrap;margin-bottom:clamp(32px,4vw,52px)}
.sechead .lede{margin-top:14px}

/* ---------- products ---------- */
.prod-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.prod{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;
  display:flex;flex-direction:column;transition:box-shadow .3s var(--ease),border-color .3s var(--ease),transform .3s var(--ease);
}
.prod:hover{box-shadow:var(--shadow-md);border-color:#D8D2C6;transform:translateY(-2px)}
.prod-img{position:relative;overflow:hidden;background:#EDE9E2}
.prod-img img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .7s var(--ease)}
.prod:hover .prod-img img{transform:scale(1.035)}
.tag{
  position:absolute;top:14px;left:14px;background:var(--white);color:var(--navy);
  font-size:10px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  padding:6px 10px;border-radius:2px;box-shadow:var(--shadow-sm);
}
.prod-body{padding:26px 26px 28px;display:flex;flex-direction:column;flex:1}
.prod-body h3{font-size:21px;margin-bottom:10px}
.prod-body>p{font-size:14.5px;color:var(--ink-soft)}
.specs{margin:20px 0 24px;border-top:1px solid var(--line-soft)}
.specs li{
  display:flex;gap:14px;padding:9px 0;border-bottom:1px solid var(--line-soft);
  font-size:13px;align-items:baseline;
}
.specs .k{flex:0 0 92px;color:var(--muted);font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;font-weight:600}
.specs .v{color:var(--ink);font-weight:500}
.prod-link{margin-top:auto;font-size:13.5px;font-weight:600;color:var(--navy);display:inline-flex;align-items:center;gap:7px}
.prod-link:hover{color:var(--gold)}
.prod-link svg{width:14px;height:14px;transition:transform .25s var(--ease)}
.prod-link:hover svg{transform:translateX(3px)}

.oem-strip{
  grid-column:1/-1;display:grid;grid-template-columns:auto 1fr auto;gap:28px;align-items:center;
  background:var(--navy);color:#E8EFF4;border-radius:var(--r);padding:30px 34px;
}
.oem-strip h3{font-size:19px;color:#fff;margin-bottom:6px}
.oem-strip p{font-size:14px;color:#B4C3D0;max-width:62ch}
.oem-badge{
  width:52px;height:52px;border:1px solid rgba(217,195,154,.45);border-radius:50%;
  display:grid;place-items:center;color:var(--gold-light);flex:none;
}
.oem-badge svg{width:22px;height:22px}

/* ---------- why ---------- */
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.why{background:var(--paper);padding:32px 30px 34px;transition:background .3s var(--ease)}
.why:hover{background:#fff}
.why-num{font-size:11px;font-weight:700;letter-spacing:.14em;color:var(--gold);margin-bottom:16px}
.why h3{font-size:17px;margin-bottom:10px;letter-spacing:-.01em}
.why p{font-size:14px;color:var(--ink-soft);line-height:1.62}

/* ---------- factory (navy) ---------- */
.factory-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,4vw,64px);align-items:center}
.factory-media{position:relative}
.factory-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:6px}
.factory-media figcaption{
  font-size:11.5px;color:#8FA2B2;margin-top:12px;letter-spacing:.02em;
  display:flex;align-items:center;gap:8px;
}
.factory-media figcaption::before{content:"";width:14px;height:1px;background:var(--gold);display:block}
.fac-stats{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:rgba(255,255,255,.12);margin-top:34px;border:1px solid rgba(255,255,255,.12)}
.fac-stats div{background:var(--navy);padding:20px 18px}
.fac-stats b{display:block;font-size:22px;font-weight:600;letter-spacing:-.02em;color:#fff;font-variant-numeric:tabular-nums}
.fac-stats span{font-size:11.5px;color:#93A7B7;letter-spacing:.02em}
.section--navy .eyebrow{color:var(--gold-light)}
.section--navy .eyebrow::before{background:var(--gold-light)}
.section--navy .h2{color:#fff}

/* ---------- process ---------- */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative}
.flow::before{
  content:"";position:absolute;top:26px;left:6%;right:6%;height:1px;background:var(--line);
}
.step{position:relative;padding-right:8px}
.step-dot{
  width:52px;height:52px;border-radius:50%;background:var(--white);border:1px solid var(--line);
  display:grid;place-items:center;font-size:13px;font-weight:700;color:var(--navy);margin-bottom:20px;position:relative;z-index:1;
  font-variant-numeric:tabular-nums;
}
.step--active .step-dot{background:var(--navy);color:#fff;border-color:var(--navy)}
.step h3{font-size:16px;margin-bottom:6px}
.step .dur{font-size:11px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--gold);margin-bottom:10px}
.step p{font-size:13.5px;color:var(--ink-soft)}

.logistics{margin-top:clamp(40px,5vw,64px);display:grid;grid-template-columns:1.1fr .9fr;gap:0;border:1px solid var(--line);background:var(--white);border-radius:var(--r);overflow:hidden}
.logistics img{width:100%;height:100%;min-height:280px;object-fit:cover}
.logistics-body{padding:clamp(26px,3vw,40px);display:flex;flex-direction:column;justify-content:center}
.logistics-body h3{font-size:19px;margin-bottom:12px}
.logistics-body p{font-size:14px;color:var(--ink-soft)}
.mini-list{margin-top:20px}
.mini-list li{display:flex;gap:10px;font-size:13.5px;padding:8px 0;border-bottom:1px solid var(--line-soft);color:var(--ink-soft)}
.mini-list li:last-child{border-bottom:0}
.mini-list b{color:var(--ink);font-weight:600;flex:0 0 auto;min-width:118px}

/* ---------- terms ---------- */
.terms{width:100%;border-collapse:collapse;background:var(--white);border:1px solid var(--line)}
.terms tr{border-bottom:1px solid var(--line-soft)}
.terms tr:last-child{border-bottom:0}
.terms th{
  text-align:left;width:30%;padding:16px 22px;font-size:11.5px;font-weight:700;
  letter-spacing:.1em;text-transform:uppercase;color:var(--muted);vertical-align:top;background:#FCFBF8;
}
.terms td{padding:16px 22px;font-size:14px;color:var(--ink);vertical-align:top}
.terms td span{color:var(--muted);font-size:12.5px;display:block;margin-top:3px}
.terms-wrap{overflow-x:auto}

/* ---------- certs ---------- */
.certs{display:grid;grid-template-columns:repeat(5,1fr);gap:16px}
.cert{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r);
  padding:26px 20px;text-align:center;transition:border-color .25s,box-shadow .25s;
}
.cert:hover{border-color:var(--gold);box-shadow:var(--shadow-sm)}
.cert svg{width:26px;height:26px;color:var(--gold);margin:0 auto 12px}
.cert b{display:block;font-size:13.5px;font-weight:600}
.cert span{font-size:11.5px;color:var(--muted);display:block;margin-top:4px}
.cert-note{font-size:12.5px;color:var(--muted);margin-top:18px;display:flex;gap:8px;align-items:flex-start}
.cert-note svg{width:14px;height:14px;color:var(--gold);flex:none;margin-top:3px}

/* ---------- buyers ---------- */
.buyers{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.buyer{border-top:2px solid var(--ink);padding-top:18px}
.buyer h3{font-size:15px;margin-bottom:8px}
.buyer p{font-size:13px;color:var(--ink-soft)}

/* ---------- faq ---------- */
.faq-grid{display:grid;grid-template-columns:.75fr 1.25fr;gap:clamp(32px,4vw,64px);align-items:start}
.faq details{border-bottom:1px solid var(--line);padding:4px 0}
.faq summary{
  list-style:none;cursor:pointer;padding:18px 30px 18px 0;position:relative;
  font-size:15px;font-weight:600;letter-spacing:-.005em;
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";position:absolute;right:6px;top:50%;width:9px;height:9px;
  border-right:1.5px solid var(--ink-soft);border-bottom:1.5px solid var(--ink-soft);
  transform:translateY(-70%) rotate(45deg);transition:transform .3s var(--ease);
}
.faq details[open] summary::after{transform:translateY(-20%) rotate(225deg)}
.faq .ans{padding:0 30px 20px 0;font-size:14px;color:var(--ink-soft)}
.faq .ans p+p{margin-top:10px}

/* ---------- contact ---------- */
.contact{background:var(--navy-deep);color:#E9EFF4}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,4vw,64px);align-items:start}
.contact h2{color:#fff;font-size:clamp(26px,3.2vw,40px);letter-spacing:-.025em;max-width:16ch}
.contact .lede{color:#A9BAC8}
.contact-list{margin-top:32px;display:grid;gap:16px}
.contact-list li{display:flex;gap:14px;font-size:14px;color:#C6D3DE;align-items:flex-start}
.contact-list svg{width:17px;height:17px;color:var(--gold-light);flex:none;margin-top:2px}
.contact-list b{display:block;color:#fff;font-weight:600;font-size:13px;letter-spacing:.02em;margin-bottom:2px}
.contact-list a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px}

.form{background:#fff;color:var(--ink);border-radius:6px;padding:clamp(24px,3vw,36px);box-shadow:0 30px 60px -30px rgba(0,0,0,.5)}
.form h3{font-size:17px;margin-bottom:4px}
.form .form-sub{font-size:12.5px;color:var(--muted);margin-bottom:22px}
.field{margin-bottom:14px}
.field label{display:block;font-size:11.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-soft);margin-bottom:6px}
.field label i{color:#B4451F;font-style:normal}
.field input,.field select,.field textarea{
  width:100%;border:1px solid #DDD8CE;background:#FDFCFA;border-radius:3px;
  padding:11px 13px;font-size:14px;font-family:inherit;color:var(--ink);
  transition:border-color .2s,background .2s;
}
.field textarea{resize:vertical;min-height:88px}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--navy);background:#fff;box-shadow:0 0 0 3px rgba(18,49,78,.08);
}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.form .btn{width:100%;margin-top:8px}
.form-note{font-size:11.5px;color:var(--muted);margin-top:12px;text-align:center}
.form-status{font-size:13px;margin-top:12px;color:var(--navy);text-align:center;min-height:18px}

/* ---------- footer ---------- */
.foot{background:#08182A;color:#8FA3B4;font-size:13px;padding:clamp(48px,5vw,68px) 0 0}
.foot-top{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.foot .brand{margin-bottom:16px}
.foot .brand-name{color:#fff}
.foot .brand-sub{color:#6F8598}
.foot-about{max-width:34ch;line-height:1.7;color:#8FA3B4}
.foot h4{color:#fff;font-size:12px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:16px;font-weight:600}
.foot li{margin-bottom:10px}
.foot a:hover{color:#fff}
.foot-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0;display:flex;
  justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12px;color:#6F8598;
}
.foot-bottom ul{display:flex;gap:20px}

/* ---------- entrance (hero only, CSS-only, content never stays hidden) ---------- */
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@media (prefers-reduced-motion:no-preference){
  .hero .eyebrow{animation:rise .55s var(--ease) both}
  .hero h1{animation:rise .6s var(--ease) .05s both}
  .hero .hero-sub{animation:rise .6s var(--ease) .12s both}
  .hero .hero-actions{animation:rise .6s var(--ease) .18s both}
  .hero .hero-facts{animation:rise .6s var(--ease) .24s both}
  .hero-media{animation:rise .8s var(--ease) .1s both}
}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .nav{display:none}
  .head-phone{display:none}
  .burger{display:inline-flex;margin-left:auto}
  .head-cta .btn{display:none}
  .why-grid{grid-template-columns:repeat(2,1fr)}
  .certs{grid-template-columns:repeat(3,1fr)}
  .buyers{grid-template-columns:repeat(2,1fr)}
  .flow{grid-template-columns:repeat(2,1fr);gap:32px 22px}
  .flow::before{display:none}
  .foot-top{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{order:-1}
  .hero-media img{aspect-ratio:16/10}
  .metrics ul{grid-template-columns:repeat(2,1fr)}
  .metrics li{border-left:0;border-top:1px solid var(--line-soft);padding:22px 0}
  .metrics li:nth-child(odd){padding-right:20px}
  .metrics li:first-child{border-top:0}
  .prod-grid{grid-template-columns:1fr}
  .oem-strip{grid-template-columns:1fr;gap:18px;padding:26px}
  .oem-badge{display:none}
  .factory-grid{grid-template-columns:1fr}
  .logistics{grid-template-columns:1fr}
  .faq-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
}
@media (max-width:640px){
  .tb-contact{display:none}
  .why-grid{grid-template-columns:1fr}
  .certs{grid-template-columns:repeat(2,1fr)}
  .buyers{grid-template-columns:1fr}
  .flow{grid-template-columns:1fr}
  .field-row{grid-template-columns:1fr}
  .brand-name{font-size:16px}
  .hero h1 em{white-space:normal}
  .foot-top{grid-template-columns:1fr}
  .terms th{width:40%}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}

/* ---------- language switch ---------- */
.tb-right{display:flex;align-items:center;gap:20px}
.lang{display:flex;align-items:center;gap:1px;border:1px solid rgba(255,255,255,.2);border-radius:3px;padding:2px}
.lang a{font-size:11.5px;letter-spacing:.04em;padding:4px 9px;border-radius:2px;color:#9FB2C1;line-height:1.4}
.lang a.on{background:rgba(255,255,255,.15);color:#fff}
.lang a:hover{color:#fff}
@media (max-width:640px){.topbar .wrap{height:auto;padding-top:8px;padding-bottom:8px}}


/* ---------- CJK typography ---------- */
html[lang="zh-Hans"] body{
  font-family:Inter,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",-apple-system,"Segoe UI",sans-serif;
}
html[lang="zh-Hans"] h1,
html[lang="zh-Hans"] h2,
html[lang="zh-Hans"] h3,
html[lang="zh-Hans"] .metric-num,
html[lang="zh-Hans"] .fac-stats b{letter-spacing:-.01em}
html[lang="zh-Hans"] .hero h1{font-size:clamp(26px,3.2vw,40px)!important;line-height:1.36!important;max-width:none!important;letter-spacing:0!important;text-wrap:wrap!important}
html[lang="zh-Hans"] .eyebrow{letter-spacing:.12em}
html[lang="zh-Hans"] .specs .k{letter-spacing:.02em}

/* CJK line-length tuning (ch units assume latin; Chinese needs em) */
html[lang="zh-Hans"] .h2{max-width:22em;font-size:clamp(23px,3vw,37px);line-height:1.28}
html[lang="zh-Hans"] .lede{max-width:37em}
html[lang="zh-Hans"] .hero-sub{max-width:32em}
html[lang="zh-Hans"] .contact h2{max-width:none;font-size:clamp(23px,3vw,38px);line-height:1.3}
html[lang="zh-Hans"] .foot-about{max-width:30em}
html[lang="zh-Hans"] .sechead{row-gap:20px}

.hero h1 .nw{white-space:nowrap}


/* ============================================================
   MOBILE PASS — real handset widths.
   Appended last on purpose: overrides the responsive block above.
   ============================================================ */
/* clip (not hidden) so the sticky header keeps working */
html,body{overflow-x:clip}
section[id],div[id]{scroll-margin-top:76px}

@media (max-width:900px){

  /* ---- top bar: single line, nothing wraps or clips ---- */
  .topbar .wrap{height:36px;gap:10px}
  .topbar ul{gap:0;min-width:0;flex:1 1 auto;overflow:hidden}
  .topbar ul li{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:11px}
  .topbar .wrap>ul>li:not(:first-child){display:none}
  .topbar .dot{flex:none}
  .tb-right{flex:none;gap:0}
  .topbar .tb-contact{display:none}

  /* ---- header ---- */
  .site-head .wrap{height:64px;gap:14px}
  .head-cta{margin-left:auto;gap:0}
  .brand img{width:40px;height:40px}
  .brand-name{font-size:17px}
  .brand-sub{font-size:9px;letter-spacing:.12em}
  .burger{margin-left:0}

  /* ---- hero ---- */
  .hero{padding:26px 0 34px}
  .hero-grid{gap:24px}
  .hero-media img{aspect-ratio:16/9}
  .hero h1{font-size:clamp(25px,6.8vw,32px);line-height:1.16}
  .hero h1 .nw{white-space:normal}
  .hero-sub{font-size:15px;margin-top:14px}
  .hero-actions{gap:10px;margin-top:22px}
  .hero-facts{display:grid;grid-template-columns:1fr 1fr;gap:10px 16px;margin-top:22px;padding-top:20px}
  .hero-facts li{font-size:12.5px}
  .hero-facts li:last-child{grid-column:1/-1}

  /* ---- metrics: 2 x 2 + full-width last ---- */
  .metrics ul{grid-template-columns:1fr 1fr}
  .metrics li{border-left:0;border-top:1px solid var(--line-soft);padding:18px 16px 18px 0}
  .metrics li:nth-child(even){padding-left:16px;border-left:1px solid var(--line-soft)}
  .metrics li:nth-child(1),.metrics li:nth-child(2){border-top:0;padding-top:22px}
  .metrics li:last-child:nth-child(odd){grid-column:1/-1;border-left:0;padding-left:0}
  .metric-num{font-size:26px}
  .metric-label{font-size:11.5px;margin-top:6px}

  /* ---- vertical rhythm ---- */
  .section{padding:40px 0}
  .sechead{margin-bottom:26px}
  .sechead .lede{margin-top:10px}
  .h2{font-size:clamp(22px,5.6vw,28px);line-height:1.22}
  .lede{font-size:14.5px}

  /* ---- why / certs / buyers ---- */
  .why{padding:24px 20px 26px}
  .why-num{margin-bottom:10px}
  .why h3{font-size:16px}
  .cert{padding:18px 12px}
  .cert svg{width:22px;height:22px;margin-bottom:8px}
  .cert b{font-size:12.5px}
  .cert span{font-size:11px;margin-top:3px}
  .cert-note{margin-top:14px;font-size:12px}
  .cert:last-child:nth-child(odd){grid-column:1/-1}

  /* ---- products ---- */
  .prod-body{padding:20px 18px 22px}
  .prod-body h3{font-size:19px}
  .prod-body>p{font-size:14px}
  .specs{margin:16px 0 20px}
  .specs li{gap:10px;font-size:12.5px;padding:8px 0}
  .specs .k{flex:0 0 76px;font-size:10.5px}
  .oem-strip{padding:22px 18px;gap:12px}
  .oem-strip h3{font-size:17px}
  .oem-strip p{font-size:13px}

  /* ---- factory ---- */
  .factory-grid{gap:24px}

  /* ---- process ---- */
  .flow{gap:22px}

  /* ---- FAQ: real tap targets ---- */
  .faq details{padding:0}
  .faq summary{padding:16px 30px 16px 0;font-size:15px}
  .faq .ans{padding:0 0 18px;font-size:13.5px}

  /* ---- contact ---- */
  .contact-grid{gap:22px}
  .contact-list{margin-top:22px;gap:14px}

  /* ---- form: 16px kills iOS zoom-on-focus ---- */
  .form{padding:20px 18px}
  .form h3{font-size:16px}
  .form .form-sub{margin-bottom:18px}
  .field label{font-size:11px}
  .field input,.field select,.field textarea{font-size:16px;padding:12px 13px}
  .field textarea{min-height:96px}

  /* ---- footer ---- */
  .foot{padding-top:34px}
  .foot-top{gap:24px;padding-bottom:26px}
  .foot-bottom{flex-direction:column;gap:10px;font-size:11.5px}
  .foot-bottom ul{gap:16px;flex-wrap:wrap}
  .foot li{margin-bottom:8px}
}

/* ---- wholesale terms: table becomes stacked rows ---- */
@media (max-width:680px){
  .terms-wrap{overflow:visible;border:1px solid var(--line);background:#fff}
  .terms{display:block;border:0;background:transparent}
  .terms tbody{display:block}
  .terms tr{display:block;padding:13px 16px;border-bottom:1px solid var(--line-soft)}
  .terms tr:last-child{border-bottom:0}
  .terms th{
    display:block;width:auto;padding:0 0 5px;border:0;background:transparent;
    font-size:10.5px;letter-spacing:.1em;
  }
  .terms td{display:block;padding:0;font-size:14.5px;line-height:1.55}
  .terms td span{font-size:12.5px;margin-top:2px}
}

/* ---- narrow handsets (iPhone SE / mini) ---- */
@media (max-width:430px){
  .wrap{padding:0 16px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .hero-actions .btn{width:100%;justify-content:center}
  .brand-sub{display:none}
  .metric-num{font-size:24px}
}

/* ---- sticky mobile action bar ---- */
.mobar{display:none}
@media (max-width:900px){
  body{padding-bottom:70px}
  .mobar{
    display:grid;grid-template-columns:auto 1fr;gap:8px;
    position:fixed;left:0;right:0;bottom:0;z-index:80;
    padding:9px 12px calc(9px + env(safe-area-inset-bottom));
    background:rgba(8,24,42,.97);border-top:1px solid rgba(255,255,255,.12);
    backdrop-filter:blur(10px);
  }
  .mobar a{
    display:flex;align-items:center;justify-content:center;gap:7px;
    min-height:44px;border-radius:4px;font-size:14px;font-weight:600;letter-spacing:.01em;
  }
  .mobar .mobar-call{border:1px solid rgba(255,255,255,.25);color:#E9EFF4;padding:0 16px}
  .mobar .mobar-quote{background:var(--gold);color:#1B1206}
  .mobar svg{width:16px;height:16px;flex:none}
}


/* ============================================================
   CONTACT — WhatsApp entry point
   ============================================================ */
.contact-list .wa{
  display:inline-block;margin-left:10px;padding:2px 9px;border-radius:3px;
  border:1px solid rgba(37,211,102,.45);background:rgba(37,211,102,.10);
  color:#8FE3B3;font-size:11.5px;letter-spacing:.02em;white-space:nowrap;
  vertical-align:1px;text-decoration:none;transition:border-color .2s,background .2s,color .2s;
}
.contact-list a.wa:hover{
  border-color:rgba(37,211,102,.85);background:rgba(37,211,102,.18);
  color:#fff;text-decoration:none;
}
@media (max-width:900px){
  .contact-list .wa{margin-left:0;margin-top:6px;padding:3px 10px;font-size:12px}
  .mobar{grid-template-columns:auto auto 1fr}
  .mobar .mobar-wa{
    display:flex;align-items:center;justify-content:center;
    width:44px;min-height:44px;border-radius:4px;
    border:1px solid rgba(37,211,102,.5);color:#8FE3B3;
  }
  .mobar .mobar-wa svg{width:20px;height:20px}
}

/* English contact headline was breaking into 4 ragged lines (16ch is too narrow) */
html[lang="en"] .contact h2{max-width:none;text-wrap:wrap}


/* ---------- collections (added for the six-series grid) ---------- */
.series-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.series-card{background:var(--white);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;transition:box-shadow .3s var(--ease),transform .3s var(--ease)}
.series-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}
.series-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.series-body{padding:22px 22px 26px}
.series-no{font-size:11px;font-weight:700;letter-spacing:.14em;color:var(--gold)}
.series-body h3{font-size:17px;margin:10px 0 8px}
.series-body p{font-size:13.5px;color:var(--ink-soft)}
@media(max-width:900px){.series-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:600px){.series-grid{grid-template-columns:1fr}}