/* 尚境玻璃 · 高端 B2B 本地预览站 */
*{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0b0c0e;
  --bg-elev:#12141a;
  --bg-card:rgba(255,255,255,.04);
  --bg-card-hover:rgba(255,255,255,.07);
  --line:rgba(255,255,255,.08);
  --line-strong:rgba(196,165,116,.35);
  --text:#f2efe8;
  --muted:#9a958c;
  --gold:#c4a574;
  --gold-soft:#d4b896;
  --gold-deep:#8a7349;
  --accent:#9b3a3a;
  --accent-hover:#b34747;
  --ok:#6d8f6a;
  --radius:14px;
  --radius-lg:22px;
  --shadow:0 20px 50px rgba(0,0,0,.45);
  --max:1120px;
  --font:"PingFang SC","Microsoft YaHei","Noto Sans SC","Hiragino Sans GB",sans-serif;
}
html{scroll-behavior:smooth}
#certs,[id^="certs"]{scroll-margin-top:88px}
body{
  font-family:var(--font);
  color:var(--text);
  background:var(--bg);
  line-height:1.7;
  font-size:15px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--gold);text-decoration:none;transition:color .2s,opacity .2s}
a:hover{color:var(--gold-soft)}
ul{list-style:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 22px}
.section{padding:72px 0}
.section-tight{padding:48px 0}
.section-dark{background:linear-gradient(180deg,#0f1116 0%,#0b0c0e 100%)}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  color:var(--gold);font-size:12px;letter-spacing:.28em;text-transform:uppercase;
  font-weight:600;margin-bottom:14px;
}
.eyebrow::before{
  content:"";width:28px;height:1px;background:var(--gold);display:inline-block;
}
h1,h2,h3{font-weight:650;letter-spacing:.02em;line-height:1.25}
h1{font-size:clamp(28px,4.5vw,46px);font-weight:700}
h2{font-size:clamp(22px,3vw,32px);margin-bottom:12px}
h3{font-size:18px}
.lead{color:var(--muted);font-size:16px;max-width:620px}
.muted{color:var(--muted)}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}
.gold{color:var(--gold)}

/* Header */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(11,12,14,.72);
  backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
}
.nav{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;min-height:68px;
}
.brand{
  display:flex;align-items:center;gap:12px;min-width:0;
}
.brand-mark{
  width:36px;height:36px;border-radius:10px;flex-shrink:0;
  background:linear-gradient(135deg,rgba(196,165,116,.95),rgba(90,70,40,.9));
  box-shadow:0 0 0 1px rgba(196,165,116,.25), inset 0 1px 0 rgba(255,255,255,.25);
  position:relative;
}
.brand-mark::after{
  content:"";position:absolute;inset:8px 11px;
  border:1.5px solid rgba(255,255,255,.55);border-radius:3px;
  border-bottom-width:3px;
}
.brand-text{min-width:0}
.brand-text strong{
  display:block;font-size:15px;font-weight:700;letter-spacing:.04em;white-space:nowrap;
  overflow:hidden;text-overflow:ellipsis;
}
.brand-text span{
  display:block;font-size:11px;color:var(--muted);letter-spacing:.08em;margin-top:1px;
}
.links{display:flex;align-items:center;gap:4px;flex-wrap:wrap;justify-content:flex-end}
.links a{
  color:rgba(242,239,232,.78);font-size:13px;padding:8px 12px;border-radius:999px;
  letter-spacing:.04em;
}
.links a:hover,.links a.active{
  color:var(--text);background:rgba(255,255,255,.06);
}
.links .nav-cta{
  margin-left:6px;background:rgba(196,165,116,.12);color:var(--gold);
  border:1px solid rgba(196,165,116,.28);padding:8px 14px;
}
.links .nav-cta:hover{background:rgba(196,165,116,.2);color:var(--gold-soft)}

/* Buttons */
.btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 22px;border-radius:999px;font-weight:600;font-size:14px;
  letter-spacing:.06em;border:1px solid transparent;cursor:pointer;
  transition:transform .2s,background .2s,border-color .2s,box-shadow .2s,color .2s;
}
.btn:hover{transform:translateY(-2px)}
.btn-gold{
  background:linear-gradient(135deg,#d4b896,#a88955);
  color:#1a140c;box-shadow:0 10px 28px rgba(168,137,85,.28);
}
.btn-gold:hover{color:#1a140c;box-shadow:0 14px 34px rgba(168,137,85,.4)}
.btn-ghost{
  background:transparent;color:var(--text);
  border-color:rgba(255,255,255,.18);
}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold);background:rgba(196,165,116,.06)}
.btn-accent{
  background:var(--accent);color:#fff;border-color:transparent;
}
.btn-accent:hover{background:var(--accent-hover);color:#fff}

/* Hero */
.hero{
  position:relative;min-height:min(78vh,720px);
  display:flex;align-items:center;overflow:hidden;
  border-bottom:1px solid var(--line);
}
.hero-bg{
  position:absolute;inset:0;
  background:
    linear-gradient(105deg,rgba(8,9,12,.92) 0%,rgba(8,9,12,.78) 42%,rgba(8,9,12,.45) 100%),
    linear-gradient(0deg,rgba(11,12,14,.95) 0%,rgba(11,12,14,.2) 45%,rgba(11,12,14,.55) 100%),
    url("../images/glass1.jpg") center/cover no-repeat;
  transform:scale(1.02);
}
.hero-bg::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(ellipse at 70% 40%,rgba(196,165,116,.12),transparent 55%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:1;padding:88px 0 96px;width:100%}
.hero h1{margin-bottom:16px;max-width:720px}
.hero h1 em{
  font-style:normal;color:var(--gold);
  background:linear-gradient(90deg,var(--gold-soft),var(--gold));
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
}
.hero .lead{font-size:16px;line-height:1.85}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.tag{
  font-size:12px;color:rgba(242,239,232,.8);letter-spacing:.08em;
  padding:6px 12px;border-radius:999px;
  border:1px solid rgba(255,255,255,.12);background:rgba(255,255,255,.04);
}
.page-hero{
  padding:56px 0 28px;border-bottom:1px solid var(--line);
  background:
    radial-gradient(ellipse at 20% 0%,rgba(196,165,116,.1),transparent 50%),
    linear-gradient(180deg,#12141a,#0b0c0e);
}
.page-hero h1{margin-bottom:10px}

/* Trust bar */
.trust{
  display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;margin-top:-36px;position:relative;z-index:2;
  box-shadow:var(--shadow);
}
.trust-item{
  background:var(--bg-elev);padding:26px 20px;text-align:center;
}
.trust-item strong{
  display:block;font-size:18px;color:var(--gold);letter-spacing:.08em;margin-bottom:6px;
}
.trust-item span{font-size:13px;color:var(--muted)}

/* Cards */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.card{
  background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;transition:transform .25s,border-color .25s,background .25s,box-shadow .25s;
  backdrop-filter:blur(8px);
}
.card:hover{
  transform:translateY(-6px);border-color:var(--line-strong);
  background:var(--bg-card-hover);box-shadow:var(--shadow);
}
.card-media{
  aspect-ratio:1/1;background:#16181f;overflow:hidden;position:relative;
}
.card-media img{width:100%;height:100%;object-fit:cover;transition:transform .45s}
.card:hover .card-media img{transform:scale(1.04)}
.card-badge{
  position:absolute;top:14px;left:14px;z-index:1;
  background:rgba(11,12,14,.78);color:var(--gold);
  border:1px solid rgba(196,165,116,.35);backdrop-filter:blur(8px);
  font-size:11px;letter-spacing:.12em;padding:5px 10px;border-radius:999px;
}
.card-body{padding:20px 20px 22px}
.card-body h3{margin-bottom:8px}
.card-meta{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 16px}
.pill{
  font-size:12px;color:var(--muted);padding:5px 10px;border-radius:999px;
  border:1px solid var(--line);background:rgba(255,255,255,.02);
}
.pill strong{color:var(--gold);font-weight:600}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:4px}
.card-foot .price{font-size:13px;color:var(--muted)}
.card-link{font-size:13px;color:var(--gold);letter-spacing:.06em}

/* Structure */
.structure{
  display:grid;grid-template-columns:1.05fr .95fr;gap:36px;align-items:center;
}
.structure-copy p{color:var(--muted);margin:12px 0}
.feature-list{margin-top:20px;display:grid;gap:12px}
.feature-list li{
  display:grid;grid-template-columns:28px 1fr;gap:12px;align-items:start;
  padding:14px 16px;border-radius:12px;border:1px solid var(--line);
  background:rgba(255,255,255,.03);
}
.feature-list .num{
  width:28px;height:28px;border-radius:8px;display:grid;place-items:center;
  font-size:12px;color:#1a140c;font-weight:700;
  background:linear-gradient(135deg,#d4b896,#a88955);
}
.feature-list strong{display:block;color:var(--text);font-size:14px;margin-bottom:2px}
.feature-list span{font-size:13px;color:var(--muted)}
.structure-visual{
  display:grid;grid-template-columns:1.2fr .8fr;gap:12px;
}
.structure-visual .shot{
  border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  background:#16181f;min-height:180px;
}
.structure-visual .shot img{width:100%;height:100%;object-fit:cover}
.structure-visual .shot.tall{grid-row:span 2;min-height:380px}

/* Spec table */
.spec-block{margin-top:28px}
.spec-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:16px;
  margin-bottom:16px;flex-wrap:wrap;
}
.spec-head h3{font-size:20px}
.table-wrap{
  overflow:auto;border-radius:var(--radius);border:1px solid var(--line);
  background:rgba(255,255,255,.025);
}
table{width:100%;border-collapse:collapse;min-width:620px;font-size:14px}
th,td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line)}
th{
  background:rgba(196,165,116,.08);color:var(--gold);
  font-weight:600;letter-spacing:.08em;font-size:12px;
}
tr:last-child td{border-bottom:none}
tr:hover td{background:rgba(255,255,255,.03)}
td .hot{
  display:inline-block;margin-left:8px;font-size:10px;padding:2px 7px;border-radius:999px;
  background:rgba(155,58,58,.2);color:#e08a8a;border:1px solid rgba(155,58,58,.35);
  letter-spacing:.06em;vertical-align:middle;
}

/* Gallery */
.gallery{
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:28px;
}
.gallery figure{
  margin:0;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);
  background:#16181f;aspect-ratio:1/1;position:relative;
  transition:transform .25s,border-color .25s,box-shadow .25s;
}
.gallery figure:hover{
  transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow);
}
.gallery img{width:100%;height:100%;object-fit:cover}
.gallery figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:28px 12px 12px;
  background:linear-gradient(transparent,rgba(0,0,0,.75));
  font-size:12px;color:rgba(255,255,255,.85);letter-spacing:.06em;
}

/* CTA band */
.cta-band{
  margin:20px 0 0;padding:42px 36px;border-radius:var(--radius-lg);
  border:1px solid var(--line-strong);
  background:
    radial-gradient(ellipse at 10% 50%,rgba(196,165,116,.16),transparent 45%),
    linear-gradient(135deg,#171920,#101218 60%,#1a1412);
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-band h2{margin-bottom:8px}
.cta-band p{color:var(--muted);max-width:520px}

/* About */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;margin-top:28px}
.panel{
  padding:28px;border-radius:var(--radius);border:1px solid var(--line);
  background:rgba(255,255,255,.03);
}
.panel h3{margin-bottom:12px;color:var(--gold)}
.panel p + p{margin-top:12px}
.panel .note-box{
  margin-top:18px;padding:14px 16px;border-radius:10px;
  border:1px dashed rgba(196,165,116,.35);color:var(--muted);font-size:13px;
  background:rgba(196,165,116,.05);
}
.process{display:grid;gap:12px;margin-top:8px}
.process-item{
  display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:start;
  padding:16px;border-radius:12px;border:1px solid var(--line);background:rgba(0,0,0,.2);
}
.process-item .step{
  font-size:11px;letter-spacing:.16em;color:var(--gold);font-weight:700;padding-top:3px;
}
.promises{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:24px}
.promise{
  padding:22px;border-radius:var(--radius);border:1px solid var(--line);
  background:rgba(255,255,255,.03);transition:transform .25s,border-color .25s;
}
.promise:hover{transform:translateY(-4px);border-color:var(--line-strong)}
.promise .icon{
  width:36px;height:36px;border-radius:10px;margin-bottom:14px;
  display:grid;place-items:center;font-size:14px;color:#1a140c;font-weight:700;
  background:linear-gradient(135deg,#d4b896,#a88955);
}
.promise h3{font-size:16px;margin-bottom:8px}
.promise p{font-size:13px;color:var(--muted)}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:24px;margin-top:28px}
.contact-card{
  padding:28px;border-radius:var(--radius);border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(196,165,116,.08),rgba(255,255,255,.03));
}
.contact-card h3{margin-bottom:6px}
.phone-list{display:grid;gap:12px;margin:22px 0}
.phone-item{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:16px 18px;border-radius:12px;border:1px solid var(--line);
  background:rgba(0,0,0,.25);transition:border-color .2s,transform .2s;
}
.phone-item:hover{border-color:var(--line-strong);transform:translateY(-2px)}
.phone-item .label{font-size:12px;color:var(--muted);letter-spacing:.08em}
.phone-item a{
  font-size:22px;font-weight:700;color:var(--text);letter-spacing:.04em;
}
.phone-item a:hover{color:var(--gold)}
.wx-chip{
  display:inline-flex;align-items:center;gap:8px;margin-top:4px;
  padding:10px 14px;border-radius:999px;border:1px solid rgba(196,165,116,.3);
  background:rgba(196,165,116,.08);color:var(--gold);font-size:14px;
}
.form-card{
  padding:28px;border-radius:var(--radius);border:1px solid var(--line);
  background:rgba(255,255,255,.03);
}
.form-card h3{margin-bottom:6px}
.form-note{
  font-size:12px;color:var(--muted);margin-bottom:18px;
  padding:10px 12px;border-radius:8px;background:rgba(255,255,255,.04);border:1px solid var(--line);
}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field{margin-bottom:14px}
.field label{
  display:block;font-size:12px;color:var(--muted);letter-spacing:.08em;margin-bottom:6px;
}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:10px;
  border:1px solid var(--line);background:rgba(0,0,0,.35);color:var(--text);
  font:inherit;outline:none;transition:border-color .2s,box-shadow .2s;
}
.field input:focus,.field select:focus,.field textarea:focus{
  border-color:rgba(196,165,116,.55);box-shadow:0 0 0 3px rgba(196,165,116,.12);
}
.field textarea{min-height:120px;resize:vertical}
.form-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-top:8px}
.form-hint{font-size:12px;color:var(--muted)}

/* Footer */
.site-footer{
  border-top:1px solid var(--line);margin-top:40px;
  background:#090a0c;padding:42px 0 28px;color:var(--muted);font-size:13px;
}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px;margin-bottom:28px;
}
.footer-brand strong{display:block;color:var(--text);font-size:16px;margin-bottom:8px}
.footer-col h4{
  color:var(--gold);font-size:12px;letter-spacing:.16em;margin-bottom:14px;font-weight:600;
}
.footer-col a,.footer-col p{display:block;color:var(--muted);margin-bottom:8px}
.footer-col a:hover{color:var(--gold)}
.footer-bottom{
  border-top:1px solid var(--line);padding-top:18px;
  display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;font-size:12px;
}

/* Motion */
.fade-up{
  opacity:0;transform:translateY(22px);
  transition:opacity .7s ease,transform .7s ease;
}
.fade-up.in{opacity:1;transform:none}
.delay-1{transition-delay:.08s}
.delay-2{transition-delay:.16s}
.delay-3{transition-delay:.24s}

/* Product page featured */
.featured{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:28px 0 40px}
.divider{
  height:1px;background:linear-gradient(90deg,transparent,var(--line-strong),transparent);
  margin:8px 0 36px;
}

/* Responsive */
@media (max-width:960px){
  .trust{grid-template-columns:repeat(2,1fr);margin-top:24px}
  .grid-3,.featured,.gallery,.promises{grid-template-columns:1fr 1fr}
  .structure,.about-grid,.contact-grid,.footer-grid{grid-template-columns:1fr}
  .structure-visual .shot.tall{grid-row:auto;min-height:260px}
  .gallery{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  .nav{min-height:60px}
  .brand-text span{display:none}
  .links a{padding:6px 8px;font-size:12px}
  .links .nav-cta{display:none}
  .hero-inner{padding:64px 0 72px}
  .trust,.grid-3,.featured,.gallery,.promises,.form-row{grid-template-columns:1fr}
  .structure-visual{grid-template-columns:1fr}
  .cta-band{padding:28px 22px}
  .section{padding:56px 0}
  .phone-item a{font-size:18px}
}

/* ===== Logo ===== */
.brand-logo{
  width:40px;height:40px;border-radius:10px;flex-shrink:0;
  object-fit:contain;background:rgba(255,255,255,.92);
  box-shadow:0 0 0 1px rgba(196,165,116,.25);
  padding:3px;
}
.brand-mark{display:none}

/* ===== Product placeholder ===== */
.card-media.placeholder,
.ph-card{
  display:flex;align-items:center;justify-content:center;
  background:
    repeating-linear-gradient(-45deg,rgba(255,255,255,.02) 0 12px,transparent 12px 24px),
    #16181f;
  color:var(--muted);text-align:center;padding:20px;
}
.ph-card{aspect-ratio:1/1;border-radius:var(--radius);border:1px dashed rgba(196,165,116,.35)}
.ph-inner strong{display:block;color:var(--gold);font-size:15px;margin-bottom:6px}
.ph-inner span{font-size:12px;letter-spacing:.06em}

/* ===== Certs / qualifications ===== */
.certs-section{margin-top:48px}
.certs-group{margin-top:28px}
.certs-group h3{font-size:18px;margin-bottom:6px}
.certs-group .sub{font-size:13px;color:var(--muted);margin-bottom:16px}
.certs-grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
}
.cert-item{
  position:relative;border-radius:12px;overflow:hidden;
  border:1px solid var(--line);background:#16181f;
  aspect-ratio:3/4;cursor:zoom-in;
  user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;
  transition:transform .25s,border-color .25s,box-shadow .25s;
}
.cert-item:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow)}
.cert-item .cert-bg{
  position:absolute;inset:0;
  background-size:cover;background-position:center top;
  background-repeat:no-repeat;
  pointer-events:none;
}
.cert-item .cert-shield{
  position:absolute;inset:0;z-index:2;
  background:transparent;
  cursor:zoom-in;
}
.cert-item .cert-cap{
  position:absolute;left:0;right:0;bottom:0;z-index:3;
  padding:28px 10px 10px;
  background:linear-gradient(transparent,rgba(0,0,0,.82));
  font-size:12px;color:rgba(255,255,255,.9);letter-spacing:.04em;
  pointer-events:none;
}
.cert-item.wide{aspect-ratio:4/3}
.certs-note{
  margin-top:18px;font-size:12px;color:var(--muted);line-height:1.7;
  padding:12px 14px;border-radius:10px;border:1px dashed rgba(196,165,116,.3);
  background:rgba(196,165,116,.04);
}

/* ===== Lightbox ===== */
.lightbox{
  position:fixed;inset:0;z-index:1000;display:none;
  align-items:center;justify-content:center;
  background:rgba(0,0,0,.88);padding:24px;
  user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;
}
.lightbox.open{display:flex}
.lightbox-inner{
  position:relative;max-width:min(920px,96vw);max-height:92vh;
  border-radius:12px;overflow:hidden;border:1px solid rgba(255,255,255,.12);
  background:#111;
}
.lightbox-stage{
  position:relative;width:min(860px,92vw);height:min(86vh,1200px);
  background-size:contain;background-position:center;background-repeat:no-repeat;
  background-color:#0a0a0a;
}
.lightbox-stage::after{
  content:"";position:absolute;inset:0;
  /* transparent shield over image */
  background:transparent;
}
.lightbox-close{
  position:absolute;top:10px;right:10px;z-index:3;
  width:36px;height:36px;border-radius:999px;border:1px solid rgba(255,255,255,.2);
  background:rgba(0,0,0,.55);color:#fff;font-size:20px;cursor:pointer;
  display:grid;place-items:center;
}
.lightbox-cap{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  padding:14px 16px;font-size:13px;color:rgba(255,255,255,.9);
  background:linear-gradient(transparent,rgba(0,0,0,.75));
  pointer-events:none;
}

/* ===== Protect / anti casual download ===== */
.protect-media,.cert-item,.lightbox,.gallery figure,.card-media{
  user-select:none;-webkit-user-select:none;-webkit-touch-callout:none;
}
.protect-media{position:relative}
.protect-media .shield{
  position:absolute;inset:0;z-index:2;background:transparent;
}

.addr-line{margin-top:14px;font-size:13px;color:var(--muted);line-height:1.7}
.footer-disclaimer{
  margin-top:10px;font-size:11px;color:rgba(154,149,140,.85);line-height:1.6;
  max-width:720px;
}

@media (max-width:960px){
  .certs-grid{grid-template-columns:repeat(3,1fr)}
}
@media (max-width:680px){
  .certs-grid{grid-template-columns:repeat(2,1fr)}
}