/* ==========================================================================
   河北广铸管件制造有限公司 — 站点样式
   Hebei Guangzhu Pipe Fittings Manufacturing Co., Ltd. — Site styles
   ========================================================================== */

:root{
  --navy:#0b1f33;
  --navy-2:#12304e;
  --navy-3:#1a4166;
  --steel:#1b4870;
  --accent:#e8761a;
  --accent-dark:#c85f0c;
  --accent-soft:#fff3e8;
  --ink:#101c28;
  --body:#4a5b6c;
  --muted:#8093a6;
  --line:#e3e9f0;
  --line-2:#eef3f8;
  --soft:#f5f8fb;
  --white:#ffffff;
  --radius:14px;
  --radius-sm:9px;
  --shadow-sm:0 1px 2px rgba(16,28,40,.06),0 2px 8px rgba(16,28,40,.05);
  --shadow:0 12px 34px rgba(11,31,51,.10);
  --shadow-lg:0 26px 64px rgba(11,31,51,.18);
  --container:1200px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",sans-serif;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;font-family:var(--font);color:var(--body);background:var(--white);
  font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;display:block}
a{color:var(--steel);text-decoration:none;transition:color .18s ease}
a:hover{color:var(--accent)}
h1,h2,h3,h4{margin:0;color:var(--ink);line-height:1.25;font-weight:700;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
button{font-family:inherit}
hr{border:0;border-top:1px solid var(--line);margin:0}

:focus-visible{outline:3px solid rgba(232,118,26,.5);outline-offset:2px;border-radius:4px}

/* ---------- layout ---------- */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px}
.section{padding:86px 0}
.section--soft{background:var(--soft)}
.section--tight{padding:60px 0}
.section-head{max-width:760px;margin-bottom:44px}
.section-head--center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;font-size:13px;font-weight:700;
  letter-spacing:.14em;text-transform:uppercase;color:var(--accent);margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--accent);border-radius:2px}
.section-head--center .eyebrow::after{content:"";width:26px;height:2px;background:var(--accent);border-radius:2px}
h1{font-size:clamp(30px,4vw,46px)}
h2{font-size:clamp(25px,2.9vw,36px)}
h3{font-size:20px}
.lead{font-size:17.5px;color:var(--body);margin-top:16px}
.muted{color:var(--muted);font-size:14.5px}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 26px;border-radius:999px;font-size:15.5px;font-weight:650;
  border:1.5px solid transparent;cursor:pointer;transition:all .2s ease;white-space:nowrap;
}
.btn svg{width:17px;height:17px;flex:none}
.btn--accent{background:var(--accent);color:#fff;box-shadow:0 8px 20px rgba(232,118,26,.28)}
.btn--accent:hover{background:var(--accent-dark);color:#fff;transform:translateY(-2px);box-shadow:0 12px 26px rgba(232,118,26,.34)}
.btn--dark{background:var(--navy);color:#fff}
.btn--dark:hover{background:var(--navy-2);color:#fff;transform:translateY(-2px)}
.btn--ghost{border-color:rgba(255,255,255,.4);color:#fff;background:rgba(255,255,255,.05)}
.btn--ghost:hover{border-color:#fff;background:rgba(255,255,255,.14);color:#fff}
.btn--line{border-color:var(--line);color:var(--ink);background:#fff}
.btn--line:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}
.btn--sm{padding:9px 18px;font-size:14px}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}

/* ---------- topbar ---------- */
.topbar{background:var(--navy);color:#b9cade;font-size:13.5px}
.topbar .container{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:42px}
.topbar-list{display:flex;align-items:center;gap:22px;flex-wrap:wrap}
.topbar-list li{display:flex;align-items:center;gap:8px}
.topbar-list svg{width:15px;height:15px;opacity:.8}
.topbar a{color:#b9cade}
.topbar a:hover{color:#fff}
.topbar-right{display:flex;align-items:center;gap:16px}
.lang{display:flex;align-items:center;gap:7px;font-weight:600}
.lang a{display:inline-flex;align-items:center;gap:6px;padding:3px 9px;border-radius:6px;transition:all .18s}
.lang a.is-active{background:rgba(255,255,255,.15);color:#fff}
.lang-sep{opacity:.35}

/* ---------- header ---------- */
.header{
  position:sticky;top:0;z-index:60;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(12px);border-bottom:1px solid var(--line);
}
.header .container{display:flex;align-items:center;justify-content:space-between;gap:28px;min-height:78px}
.brand{display:flex;align-items:center;gap:13px;flex:none}
.brand-mark{width:44px;height:44px;flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:16.5px;font-weight:800;color:var(--navy);letter-spacing:.01em}
.brand-sub{font-size:11.5px;color:var(--muted);letter-spacing:.06em;text-transform:uppercase;font-weight:600}
.nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-cta{display:none}
.nav a{
  position:relative;padding:10px 13px;border-radius:8px;font-size:15.5px;font-weight:600;
  color:var(--ink);white-space:nowrap;
}
.nav a:hover{color:var(--accent);background:var(--accent-soft)}
.nav a.is-active{color:var(--accent)}
.nav a.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:3px;height:2.5px;
  background:var(--accent);border-radius:2px;
}
.header-cta{display:flex;align-items:center;gap:12px;flex:none}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);background:#fff;
  border-radius:10px;cursor:pointer;align-items:center;justify-content:center;flex:none;
}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--ink);border-radius:2px;position:relative}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:var(--ink);border-radius:2px;
}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* ---------- hero ---------- */
.hero{
  position:relative;overflow:hidden;background:var(--navy);color:#d7e3ef;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(900px 480px at 82% 12%,rgba(232,118,26,.20),transparent 62%),
    radial-gradient(760px 520px at 6% 92%,rgba(47,106,153,.30),transparent 66%),
    linear-gradient(180deg,#0b1f33 0%,#0e2740 55%,#0b1f33 100%);
}
.hero::after{
  content:"";position:absolute;inset:0;opacity:.5;
  background-image:linear-gradient(rgba(255,255,255,.055) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.055) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 40%,#000 20%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 50% 40%,#000 20%,transparent 78%);
}
.hero .container{position:relative;z-index:2}
.hero-grid{display:grid;grid-template-columns:1.08fr .92fr;gap:56px;align-items:center;padding:78px 0 68px}
.hero h1{color:#fff;font-size:clamp(31px,4.1vw,50px)}
.hero h1 em{font-style:normal;color:var(--accent-2,#ff8f3c);display:block}
.hero-lead{font-size:18px;color:#b9cade;margin-top:22px;max-width:620px}
.hero-points{display:flex;flex-wrap:wrap;gap:11px;margin-top:30px}
.hero-points li{
  display:inline-flex;align-items:center;gap:8px;font-size:14.5px;font-weight:600;color:#dbe7f2;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.14);
  padding:8px 15px;border-radius:999px;
}
.hero-points svg{width:15px;height:15px;color:var(--accent-2,#ff8f3c)}
.hero-figure{
  position:relative;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);
  border-radius:22px;padding:26px;box-shadow:var(--shadow-lg);
}
.hero-figure img{width:100%;height:auto}
.hero-figure figcaption{
  margin-top:16px;padding-top:16px;border-top:1px dashed rgba(255,255,255,.2);
  font-size:13.5px;color:#9fb4c9;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
}
.hero-figure figcaption b{color:#e8f0f8;font-weight:600}
.hero-bar{position:relative;z-index:2;border-top:1px solid rgba(255,255,255,.12);background:rgba(0,0,0,.16)}
.hero-bar .container{display:flex;flex-wrap:wrap;gap:14px 40px;padding:20px 24px;align-items:center}
.hero-bar li{display:flex;align-items:center;gap:9px;font-size:14px;color:#a9bed4}
.hero-bar svg{width:16px;height:16px;color:var(--accent-2,#ff8f3c);flex:none}

/* ---------- page hero (inner pages) ---------- */
.page-hero{position:relative;background:var(--navy);color:#c8d8e8;overflow:hidden}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(720px 380px at 88% 8%,rgba(232,118,26,.20),transparent 64%),
             linear-gradient(180deg,#0b1f33,#12304e);
}
.page-hero::after{
  content:"";position:absolute;inset:0;opacity:.42;
  background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);
  background-size:52px 52px;
  mask-image:linear-gradient(180deg,#000,transparent 92%);
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 92%);
}
.page-hero .container{position:relative;z-index:2;padding:62px 24px 58px}
.page-hero h1{color:#fff}
.page-hero .lead{color:#b3c7da;max-width:720px}
.breadcrumb{display:flex;align-items:center;gap:9px;font-size:13.5px;color:#93aabd;margin-bottom:20px;flex-wrap:wrap}
.breadcrumb a{color:#b3c7da}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{opacity:.45}
.breadcrumb [aria-current]{color:var(--accent-2,#ff8f3c);font-weight:600}

/* ---------- grids & cards ---------- */
.grid{display:grid;gap:26px}
.grid--2{grid-template-columns:repeat(2,1fr)}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px 28px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#d3dee8}
.card h3{margin-bottom:10px}
.card p{font-size:15.5px}
.card-icon{
  width:52px;height:52px;border-radius:13px;display:grid;place-items:center;margin-bottom:20px;
  background:linear-gradient(150deg,var(--accent-soft),#fff);border:1px solid #f6ddc6;color:var(--accent);
}
.card-icon svg{width:25px;height:25px}

/* product cards */
.prod-card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);overflow:hidden;transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.prod-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#d3dee8}
.prod-card__media{
  position:relative;background:linear-gradient(160deg,#f7fafd,#e8eff6);
  padding:20px 24px;border-bottom:1px solid var(--line-2);display:grid;place-items:center;min-height:190px;
}
.prod-card__media img{width:100%;max-width:250px;height:auto;transition:transform .35s ease}
.prod-card:hover .prod-card__media img{transform:scale(1.045)}
.prod-card__tag{
  position:absolute;top:14px;left:14px;background:var(--navy);color:#fff;
  font-size:12px;font-weight:700;letter-spacing:.08em;padding:5px 11px;border-radius:6px;
}
.prod-card__body{padding:24px 24px 26px;display:flex;flex-direction:column;flex:1}
.prod-card__body h3{font-size:19px;margin-bottom:4px}
.prod-card__en{font-size:13.5px;color:var(--muted);font-weight:600;letter-spacing:.02em;margin-bottom:14px}
.prod-card__body p{font-size:14.8px;color:var(--body);flex:1}
.prod-card__meta{
  display:flex;flex-wrap:wrap;gap:7px;margin:18px 0 0;padding-top:18px;border-top:1px dashed var(--line);
}
.chip{
  font-size:12.5px;font-weight:600;color:var(--steel);background:var(--soft);
  border:1px solid var(--line);padding:4px 11px;border-radius:999px;
}
.prod-card__link{
  margin-top:18px;display:inline-flex;align-items:center;gap:7px;font-size:14.5px;font-weight:700;color:var(--accent);
}
.prod-card__link svg{width:16px;height:16px;transition:transform .2s ease}
.prod-card__link:hover svg{transform:translateX(4px)}

/* ---------- stats ---------- */
.stats{background:var(--navy);color:#fff}
.stats .container{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:52px 24px}
.stat{text-align:center;padding:0 12px;border-right:1px solid rgba(255,255,255,.12)}
.stat:last-child{border-right:0}
.stat b{display:block;font-size:clamp(28px,3.4vw,40px);font-weight:800;color:#fff;letter-spacing:-.02em;line-height:1.1}
.stat b span{color:var(--accent-2,#ff8f3c)}
.stat small{display:block;margin-top:9px;font-size:14px;color:#a9bed4}

/* ---------- spec table ---------- */
.spec-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:#fff}
table.spec{width:100%;border-collapse:collapse;min-width:520px}
table.spec caption{text-align:left;padding:18px 22px;font-weight:700;color:var(--ink);border-bottom:1px solid var(--line);font-size:16px}
table.spec th,table.spec td{padding:14px 22px;text-align:left;font-size:15px;border-bottom:1px solid var(--line-2);vertical-align:top}
table.spec th{width:34%;color:var(--ink);font-weight:650;background:#fafcfe}
table.spec tr:last-child th,table.spec tr:last-child td{border-bottom:0}

/* ---------- value / defect list ---------- */
.list-check{display:grid;gap:13px}
.list-check li{display:flex;gap:12px;font-size:15.5px;color:var(--body)}
.list-check svg{width:19px;height:19px;flex:none;margin-top:4px;color:var(--accent)}

/* ---------- process steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.step{position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 26px}
.step__no{
  display:inline-grid;place-items:center;width:42px;height:42px;border-radius:11px;
  background:var(--navy);color:#fff;font-weight:800;font-size:16px;margin-bottom:18px;
}
.step h3{font-size:17.5px;margin-bottom:8px}
.step p{font-size:14.8px}

/* QC timeline */
.qc-list{display:grid;gap:0}
.qc{display:grid;grid-template-columns:78px 1fr;gap:26px;padding:26px 0;border-bottom:1px dashed var(--line)}
.qc:last-child{border-bottom:0}
.qc__no{font-size:26px;font-weight:800;color:#cfdce8;letter-spacing:-.02em;line-height:1}
.qc h3{font-size:17.5px;margin-bottom:8px}
.qc p{font-size:15.2px}

/* certificate cards */
.cert{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.cert__badge{
  width:54px;height:54px;flex:none;border-radius:12px;display:grid;place-items:center;
  background:var(--navy);color:#fff;font-weight:800;font-size:13px;text-align:center;line-height:1.15;padding:4px;
}
.cert h3{font-size:16.5px;margin-bottom:4px}
.cert p{font-size:14.5px}

/* ---------- markets ---------- */
.market-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.market{background:#fff;border:1px solid var(--line);border-radius:var(--radius-sm);padding:22px 22px 24px}
.market b{display:block;color:var(--ink);font-size:16px;margin-bottom:5px}
.market span{display:block;font-size:13px;color:var(--muted);letter-spacing:.02em;margin-bottom:10px}
.market p{font-size:14.2px;color:var(--body)}

/* ---------- CTA band ---------- */
.cta-band{position:relative;background:var(--navy);color:#fff;overflow:hidden}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(680px 320px at 80% 0%,rgba(232,118,26,.26),transparent 62%),
             linear-gradient(120deg,#0b1f33,#154063 70%,#0b1f33);
}
.cta-band .container{position:relative;z-index:2;padding:64px 24px;display:grid;grid-template-columns:1fr auto;gap:40px;align-items:center}
.cta-band h2{color:#fff}
.cta-band p{color:#b9cade;margin-top:12px;max-width:640px}

/* ---------- FAQ ---------- */
.faq{border-bottom:1px solid var(--line)}
.faq summary{
  cursor:pointer;list-style:none;display:flex;gap:18px;align-items:flex-start;
  padding:24px 4px;font-size:17.5px;font-weight:650;color:var(--ink);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"";flex:none;width:13px;height:13px;margin-left:auto;margin-top:7px;
  border-right:2.4px solid var(--muted);border-bottom:2.4px solid var(--muted);
  transform:rotate(45deg);transition:transform .22s ease;
}
.faq[open] summary{color:var(--accent)}
.faq[open] summary::after{transform:rotate(-135deg);border-color:var(--accent)}
.faq__q-en{display:block;font-size:13.5px;font-weight:600;color:var(--muted);margin-top:5px;letter-spacing:.02em}
.faq__a{padding:0 4px 26px;font-size:15.8px;color:var(--body);max-width:900px}
.faq__a .faq__a-en{
  margin-top:14px;padding:14px 18px;background:var(--soft);border-left:3px solid var(--line);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-size:14.8px;color:#5c6f82;
}

/* ---------- contact / forms ---------- */
.contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:52px;align-items:start}
.info-list{display:grid;gap:20px}
.info{display:flex;gap:16px;align-items:flex-start}
.info__icon{
  width:44px;height:44px;flex:none;border-radius:11px;display:grid;place-items:center;
  background:var(--accent-soft);border:1px solid #f6ddc6;color:var(--accent);
}
.info__icon svg{width:20px;height:20px}
.info__label{font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:4px}
.info__value{font-size:16.5px;color:var(--ink);font-weight:600;word-break:break-word}
.info__value a{color:var(--ink)}
.info__value a:hover{color:var(--accent)}

.form{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px;box-shadow:var(--shadow-sm)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:7px}
.field--full{grid-column:1 / -1}
.field label{font-size:14px;font-weight:650;color:var(--ink)}
.field label .req{color:var(--accent)}
.field input,.field select,.field textarea{
  font-family:inherit;font-size:15px;color:var(--ink);padding:12px 14px;
  border:1px solid var(--line);border-radius:var(--radius-sm);background:#fdfefe;
  transition:border-color .18s ease,box-shadow .18s ease;width:100%;
}
.field textarea{min-height:132px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 3.5px rgba(232,118,26,.13);
}
.field-hint{font-size:13px;color:var(--muted)}
.form-note{font-size:13.5px;color:var(--muted);margin-top:16px}
.form-status{margin-top:16px;font-size:14.5px;font-weight:600;display:none}
.form-status.is-ok{display:block;color:#1a7f4b}
.form-status.is-err{display:block;color:#c0392b}
.form-side{display:grid;gap:14px;margin-top:26px;padding-top:26px;border-top:1px dashed var(--line)}

/* ---------- map / iframe ---------- */
.map-embed{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--soft);min-height:320px}
.map-embed iframe{width:100%;height:380px;border:0;display:block}

/* ---------- footer ---------- */
.footer{background:var(--navy);color:#9fb4c9;font-size:14.5px;padding-top:64px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.25fr;gap:44px;padding-bottom:52px}
.footer h4{color:#fff;font-size:15px;letter-spacing:.06em;text-transform:uppercase;margin-bottom:20px}
.footer a{color:#9fb4c9}
.footer a:hover{color:var(--accent-2,#ff8f3c)}
.footer-brand{display:flex;align-items:center;gap:13px;margin-bottom:18px}
.footer-brand .brand-name{color:#fff}
.footer-brand .brand-sub{color:#8ba2b8}
.footer-links{display:grid;gap:11px}
.footer-contact{display:grid;gap:13px}
.footer-contact li{display:flex;gap:11px;align-items:flex-start}
.footer-contact svg{width:16px;height:16px;flex:none;margin-top:4px;color:var(--accent-2,#ff8f3c)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);padding:22px 0;display:flex;
  justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:13.5px;color:#8098ae;
}

/* ---------- floating contact ---------- */
.floaties{position:fixed;right:20px;bottom:24px;z-index:70;display:grid;gap:12px}
.floaty{
  width:52px;height:52px;border-radius:50%;display:grid;place-items:center;color:#fff;
  box-shadow:0 10px 26px rgba(11,31,51,.28);transition:transform .2s ease;
}
.floaty:hover{transform:translateY(-3px) scale(1.05);color:#fff}
.floaty svg{width:24px;height:24px}
.floaty--wa{background:#25d366}
.floaty--mail{background:var(--accent)}
.floaty--top{background:var(--navy-2)}

/* ---------- misc ---------- */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.figure-frame{background:linear-gradient(160deg,#f7fafd,#e6eef6);border:1px solid var(--line);border-radius:var(--radius);padding:26px}
.defect-box{background:#fff8f3;border:1px solid #f7dcc6;border-radius:var(--radius);padding:28px 30px}
.defect-box h3{margin-bottom:14px;color:#a8540d}
.reveal{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}
.reveal.is-in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ---------- responsive ---------- */
@media (max-width:1080px){
  .hero-grid{grid-template-columns:1fr;gap:38px;padding:58px 0 52px}
  .hero-figure{max-width:640px}
  .grid--4{grid-template-columns:repeat(2,1fr)}
  .market-grid{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(2,1fr)}
  .stats .container{grid-template-columns:repeat(2,1fr);gap:32px 24px}
  .stat:nth-child(2){border-right:0}
  .stat{border-right:0}
  .contact-grid{grid-template-columns:1fr;gap:40px}
  .two-col{grid-template-columns:1fr;gap:34px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
  .cta-band .container{grid-template-columns:1fr;gap:28px}
}
@media (max-width:920px){
  .nav{
    position:fixed;inset:auto 0 0 0;top:0;left:0;right:0;height:100vh;background:#fff;
    flex-direction:column;align-items:stretch;gap:0;padding:96px 24px 24px;margin:0;
    transform:translateY(-102%);transition:transform .3s ease;overflow-y:auto;z-index:55;
  }
  .nav.is-open{transform:none;box-shadow:var(--shadow-lg)}
  .nav a{padding:16px 14px;border-bottom:1px solid var(--line-2);border-radius:0;font-size:18px}
  .nav a.is-active::after{display:none}
  .nav.is-open .nav-cta{display:flex;margin-top:24px}
  .nav-toggle{display:flex;z-index:56}
  .header-cta .btn{display:none}
  .nav-cta{display:none}
  .nav-cta .btn{width:100%}
  .topbar-list{display:none}
}
@media (max-width:760px){
  .section{padding:60px 0}
  .grid{gap:20px}
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr}
  .steps{grid-template-columns:1fr}
  .market-grid{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
  .form{padding:24px}
  .stats .container{grid-template-columns:1fr;gap:26px;padding:40px 24px}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .qc{grid-template-columns:1fr;gap:12px}
  .page-hero .container{padding:44px 24px 42px}
  .topbar .container{justify-content:center}
  .hero-bar .container{padding:16px 24px;gap:10px 24px}
  .floaties{right:14px;bottom:16px}
  .floaty{width:46px;height:46px}
}
@media (max-width:480px){
  .container{padding:0 18px}
  .btn{width:100%}
  .btn-row{gap:10px}
  .brand-name{font-size:15px}
  .brand-mark{width:38px;height:38px}
  table.spec th,table.spec td{padding:12px 16px;font-size:14.2px}
}

/* ==========================================================================
   补充样式
   ========================================================================== */

.hero-bar ul{display:flex;flex-wrap:wrap;gap:14px 40px;align-items:center}

.chip-row{display:flex;flex-wrap:wrap;gap:9px}
.chip--accent{background:var(--accent-soft);border-color:#f6ddc6;color:var(--accent-dark)}

.page-hero h1 .hero-sub{
  display:block;font-size:.5em;font-weight:600;color:#9fb4c9;
  letter-spacing:.02em;margin-top:12px;
}

.figure-frame img{width:100%;height:auto}

.faq summary > span{flex:1}
.faq summary{font-size:17px}

.section-head .lead{max-width:720px}

.two-col > div > .list-check p{color:var(--body)}

.defect-box .list-check li{color:#6b4a25}

table.spec caption{font-size:16.5px}
table.spec thead th{background:#f0f5fa;font-size:14px;letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}

.topbar-right{font-size:13px;color:#8ba2b8}

@media (max-width:760px){
  .hero-bar ul{gap:10px 22px}
  .page-hero h1 .hero-sub{font-size:.58em}
}

.prod-card__meta .chip{max-width:100%;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.prod-card__body p{overflow-wrap:anywhere}