:root{
  --ink:#2b2522;
  --deep:#2b2522;
  --deep2:#3b302b;
  --paper:#f7f4ef;
  --white:#fff;
  --muted:#716a66;
  --line:#ddd3ca;
  --teal:#a8754a;
  --teal2:#c89a6b;
  --gold:#c89a6b;
  --soft:#f0e9e2;
  --shadow:0 18px 50px rgba(12,27,32,.12);
  --radius:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  color:var(--ink);
  background:var(--paper);
  line-height:1.62;
}
img{display:block;max-width:100%}
button,a{font:inherit}
a{color:inherit}
button{color:inherit}
.wrap{width:min(1180px,calc(100% - 40px));margin:auto}
.site-header{
  position:sticky;top:0;z-index:30;
  background:rgba(247,244,239,.93);
  backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(23,33,38,.1);
}
.nav-wrap{height:76px;display:flex;align-items:center;justify-content:space-between;gap:28px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;min-width:max-content}
.brand-logo-mark{width:46px;height:46px;object-fit:contain;flex:0 0 auto}
.footer-logo-mark{width:42px;height:42px;object-fit:contain;flex:0 0 auto}
.brand-text{display:flex;flex-direction:column;line-height:1.05;letter-spacing:.04em}
.brand-text strong{font-size:14px}
.brand-text small{font-size:10px;color:var(--muted);letter-spacing:.16em;margin-top:5px}
.nav{display:flex;align-items:center;gap:26px;font-size:14px}
.nav a{text-decoration:none;color:#324248}
.nav a:hover{color:var(--teal)}
.nav .nav-cta{border:1px solid #9eaaa8;padding:9px 15px;border-radius:999px}
.menu-btn{display:none;background:transparent;border:1px solid #b9c1bf;border-radius:999px;padding:8px 14px}

.hero{padding:58px 0 72px;background:
  radial-gradient(circle at 18% 20%,rgba(168,117,74,.11),transparent 30%),
  linear-gradient(180deg,#faf8f4 0%,#f0ebe5 100%)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:58px;align-items:center}
.eyebrow{
  margin:0 0 13px;
  font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.13em;
  color:#9bc4bd;
}
.eyebrow.dark{color:var(--teal)}
.hero h1{font-size:clamp(48px,6vw,78px);line-height:.98;letter-spacing:-.055em;margin:0 0 28px;max-width:790px}
.hero h1 span{color:var(--teal)}
.hero-lead{font-size:18px;max-width:720px;color:#526168;margin:0 0 28px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border-radius:999px;text-decoration:none;font-weight:800;font-size:14px}
.btn.primary{background:var(--deep);color:#fff}
.btn.primary:hover{background:var(--teal)}
.btn.ghost{border:1px solid #a9b3b1;background:rgba(255,255,255,.35)}
.hero-meta{margin-top:42px;display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.hero-meta div{border-top:1px solid #bdc8c4;padding-top:13px}
.hero-meta strong,.hero-meta span{display:block}
.hero-meta strong{font-size:13px}
.hero-meta span{font-size:12px;color:var(--muted);margin-top:3px}
.hero-visual{position:relative;padding:0 0 48px 32px}
.hero-media{margin:0;position:relative;border-radius:28px;overflow:hidden;box-shadow:var(--shadow);background:#ddd;min-height:560px}
.hero-media img{width:100%;height:560px;object-fit:cover;object-position:58% center}
.hero-media figcaption{position:absolute;left:18px;right:18px;bottom:18px;padding:15px 17px;border-radius:15px;background:rgba(43,37,34,.87);color:#fff;backdrop-filter:blur(8px)}
.hero-media figcaption span,.hero-media figcaption small{display:block}
.hero-media figcaption span{font-weight:800}
.hero-media figcaption small{color:#e0d7d1;margin-top:2px}
.hero-product-card{
  position:absolute;left:0;bottom:0;width:190px;margin:0;
  border-radius:20px;overflow:hidden;background:#fff;box-shadow:0 20px 55px rgba(43,37,34,.24);
  border:6px solid #f7f4ef;
}
.hero-product-card img{width:100%;height:170px;object-fit:cover}
.hero-product-card figcaption{padding:11px 13px;color:var(--ink)}
.hero-product-card strong,.hero-product-card span{display:block}
.hero-product-card strong{font-size:13px}
.hero-product-card span{font-size:11px;color:var(--muted);margin-top:2px}

.section{padding:96px 0}
.intro{background:#fff}
.intro-grid{display:grid;grid-template-columns:130px 1fr 1fr;gap:45px;align-items:start}
.section-label{font-size:12px;color:var(--muted);letter-spacing:.12em;text-transform:uppercase;border-top:1px solid var(--line);padding-top:13px}
.intro h2,.section-head h2,.cta-section h2{font-size:clamp(34px,4vw,54px);line-height:1.06;letter-spacing:-.035em;margin:0}
.prose{font-size:16px;color:#4e5e63}
.prose p:first-child{margin-top:0}
.prose strong{color:var(--ink)}

.section-head{display:grid;grid-template-columns:1fr .72fr;gap:70px;align-items:end;margin-bottom:48px}
.section-head>p{margin:0;color:#617076}
.section-head.light h2,.section-head.light>p{color:white}
.section-head.light>p{color:#b9c8c9}
.section-head.compact{margin-bottom:26px}
.section-head.compact h3{font-size:32px;margin:0}
.products-section{background:var(--paper)}
.product-feature{display:grid;grid-template-columns:1fr 1fr;gap:34px;padding:38px 0 62px;border-top:1px solid #cfd7d3}
.product-feature.reverse .product-feature-copy{order:2}
.product-feature.reverse .bismuth-stack{order:1}
.product-feature-copy{padding:22px 28px 0 0}
.product-no{display:inline-block;color:#91a19f;font-size:14px;font-weight:800;margin-bottom:28px}
.product-feature h3{font-size:36px;line-height:1.08;letter-spacing:-.03em;margin:0 0 18px}
.product-feature p{color:#59686d}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin:26px 0}
.chips span{padding:8px 11px;border-radius:999px;background:#e7ece9;font-size:12px;font-weight:750}
.text-link{display:inline-block;margin-top:10px;color:var(--teal);font-weight:800;text-decoration:none}
.image-card{padding:0;border:0;border-radius:var(--radius);overflow:hidden;background:white;box-shadow:var(--shadow);cursor:zoom-in;text-align:left}
.image-card img{width:100%;height:420px;object-fit:cover;background:#fff}
.image-card.spec-card img{object-fit:contain;padding:16px}
.image-card span{display:flex;justify-content:space-between;padding:13px 16px;color:#48565a;font-size:12px}
.bismuth-stack{display:grid;grid-template-columns:1.4fr .6fr;gap:14px}
.bismuth-stack .image-card:first-child{grid-row:span 2}
.bismuth-stack .image-card img{height:100%;min-height:420px}
.bismuth-stack .image-card:last-child img{height:420px;object-fit:cover}
.clean-list{padding-left:18px;color:#4e5e63}
.clean-list li{margin:6px 0}
.metal-section{padding-top:22px}
.metal-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.metal-grid button,.factory-gallery button,.logistics-grid button,.cert-grid button{
  padding:0;border:0;background:#fff;cursor:zoom-in;border-radius:16px;overflow:hidden;box-shadow:0 8px 28px rgba(20,30,34,.08)
}
.metal-grid img{width:100%;height:310px;object-fit:cover}
.metal-grid span,.logistics-grid span,.cert-grid span{display:block;padding:11px 13px;text-align:left;font-size:12px;font-weight:800}

.supply-section{background:var(--deep);color:white}
.network-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-bottom:40px}
.network-grid article{padding:28px;border:1px solid #655044;border-radius:20px;background:#3a302b}
.network-grid article span{font-size:11px;color:#d0a77f;text-transform:uppercase;letter-spacing:.12em}
.network-grid h3{font-size:22px;margin:12px 0 10px}
.network-grid p{color:#d3c8c0;margin:0;font-size:14px}
.factory-gallery{display:grid;grid-template-columns:2fr 1fr 1fr;grid-auto-rows:235px;gap:12px}
.factory-gallery button{background:#443832}
.factory-gallery button.wide{grid-row:span 2}
.factory-gallery img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.factory-gallery button:hover img,.logistics-grid button:hover img,.metal-grid button:hover img{transform:scale(1.025)}
.source-note{font-size:12px;color:#c4b6ac;margin:16px 2px 0}

.logistics-section{background:white}
.logistics-grid{display:grid;grid-template-columns:1.25fr 1fr 1fr;gap:14px}
.logistics-grid img{width:100%;height:330px;object-fit:cover}

.quality-section{background:#342a26;color:white}
.quality-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:50px;align-items:center}
.testing{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.lab-card{border:1px solid #5e4c42;border-radius:18px;overflow:hidden;background:#f8f7f1;color:var(--ink)}
.lab-card img{width:100%;height:170px;object-fit:contain;padding:12px;background:#fff}
.lab-card span{display:block;padding:12px 14px;font-size:12px;font-weight:800}
.cert-copy h3{font-size:34px;margin:0 0 14px}
.cert-copy p{color:#d6cbc4}
.small-note{font-size:12px!important;color:#bdaea5!important}
.cert-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:36px}
.cert-grid button{background:#f3eee2}
.cert-grid img{height:390px;width:100%;object-fit:cover;object-position:top}
.cert-grid span{color:#223238}

.applications-section{background:#f5f2eb}
.application-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid #cbd3cf;border-left:1px solid #cbd3cf}
.application-grid article{padding:28px;border-right:1px solid #cbd3cf;border-bottom:1px solid #cbd3cf;min-height:240px}
.application-grid b{display:block;color:var(--teal);font-size:12px;margin-bottom:26px}
.application-grid h3{font-size:23px;margin:0 0 11px}
.application-grid p{font-size:14px;color:#617075;margin:0}

.cta-section{background:#241f1c;color:white}
.contact-grid{display:grid;grid-template-columns:1fr .8fr;gap:70px;align-items:start}
.contact-copy{padding-top:12px}
.contact-copy>p:not(.eyebrow){color:#c9bbb2;font-size:17px;max-width:640px}
.light-btn{background:#e9f1ef!important;color:#0e252a!important}
.light-ghost{border-color:#486067!important;color:#fff}
.contact-card{background:#f3f1ea;color:var(--ink);border-radius:24px;padding:34px}
.contact-card h3{font-size:36px;margin:0}
.contact-card .role{color:var(--teal);font-weight:800;margin-top:0}
.contact-card dl{margin:30px 0 0}
.contact-card dl div{padding:15px 0;border-top:1px solid #ced6d2;display:grid;grid-template-columns:120px 1fr;gap:15px}
.contact-card dt{font-size:11px;text-transform:uppercase;letter-spacing:.08em;color:#74817f}
.contact-card dd{margin:0;font-size:14px}
.contact-card dd a{text-decoration:none;color:var(--ink)}

footer{background:#191512;color:#d0c4bd;padding:38px 0}
.footer-grid{display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center}
.footer-brand{display:flex;align-items:center;gap:12px}
.footer-brand strong{font-size:14px;color:#fff}
.footer-brand p{margin:3px 0 0;font-size:12px}
.footer-links{display:flex;gap:18px;font-size:12px}
.footer-links a{text-decoration:none}
.footer-bottom{grid-column:1/-1;border-top:1px solid #453a34;padding-top:18px;display:flex;justify-content:space-between;gap:20px;font-size:11px;color:#a99b92}

.lightbox{
  width:min(92vw,1100px);max-height:92vh;border:0;border-radius:18px;padding:0;background:#0b1114;color:white;box-shadow:0 30px 100px rgba(0,0,0,.45)
}
.lightbox::backdrop{background:rgba(0,0,0,.78);backdrop-filter:blur(3px)}
.lightbox img{width:100%;max-height:80vh;object-fit:contain;background:#101719}
.lightbox p{padding:13px 18px;margin:0;font-size:13px;color:#c3d0d1}
.lightbox-close{position:absolute;right:12px;top:10px;width:38px;height:38px;border:0;border-radius:50%;font-size:25px;background:rgba(0,0,0,.6);color:white;cursor:pointer}

@media (max-width: 960px){
  .nav{display:none;position:absolute;left:20px;right:20px;top:68px;flex-direction:column;align-items:stretch;padding:18px;background:#f7f5ef;border:1px solid #c9d1ce;border-radius:18px;box-shadow:var(--shadow)}
  .nav.open{display:flex}
  .menu-btn{display:block}
  .hero-grid,.intro-grid,.section-head,.product-feature,.quality-grid,.contact-grid{grid-template-columns:1fr}
  .hero{padding-top:35px}
  .hero-visual{padding-left:0;padding-bottom:40px}
  .hero-product-card{width:160px;left:14px}
  .hero-media{min-height:380px}
  .hero-media img{height:420px}
  .hero-meta{grid-template-columns:1fr}
  .intro-grid{gap:24px}
  .product-feature.reverse .product-feature-copy,.product-feature.reverse .bismuth-stack{order:initial}
  .network-grid,.application-grid{grid-template-columns:1fr 1fr}
  .factory-gallery{grid-template-columns:1fr 1fr;grid-auto-rows:220px}
  .factory-gallery .wide{grid-row:span 1;grid-column:span 2}
  .logistics-grid,.cert-grid{grid-template-columns:1fr 1fr}
  .metal-grid{grid-template-columns:1fr 1fr}
}
@media (max-width: 640px){
  .wrap{width:min(100% - 28px,1180px)}
  .nav-wrap{height:68px}
  .hero h1{font-size:48px}
  .hero-media img{height:360px}
  .hero-product-card img{height:135px}
  .section{padding:70px 0}
  .network-grid,.application-grid,.logistics-grid,.cert-grid,.testing,.metal-grid{grid-template-columns:1fr}
  .factory-gallery{grid-template-columns:1fr;grid-auto-rows:220px}
  .factory-gallery .wide{grid-column:span 1}
  .bismuth-stack{grid-template-columns:1fr}
  .image-card img,.bismuth-stack .image-card img,.bismuth-stack .image-card:last-child img{height:340px;min-height:0}
  .metal-grid img{height:340px}
  .cert-grid img{height:470px}
  .footer-grid{grid-template-columns:1fr}
  .footer-links{flex-wrap:wrap}
  .footer-bottom{flex-direction:column}
  .contact-card dl div{grid-template-columns:1fr;gap:3px}
}