:root{
  --text:#212121;
  --muted:#808080;
  --line:#e7e7e7;
  --soft:#f7f7f7;
  --accent:#DA251D;
  --max:1440px;
}
*{box-sizing:border-box}
body{margin:0;font-family:Arial,Helvetica,sans-serif;color:var(--text);background:#fff;line-height:1.55}
img{display:block;width:100%;height:100%;object-fit:cover}
.container{width:min(var(--max),calc(100% - 56px));margin:auto}
.section{padding:72px 0;border-bottom:1px solid var(--line)}
.eyebrow{font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin-bottom:12px}
h1,h2,h3{margin:0;font-weight:600;letter-spacing:-.02em}
h1{font-size:42px;line-height:1.15}
h2{font-size:30px;line-height:1.2}
h3{font-size:17px}
p{margin:0;color:var(--muted);font-size:15px}
.section-intro{margin-top:16px;max-width:820px;line-height:1.7}
.hero{padding:70px 0 60px}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:58px;align-items:center}
.hero-img{aspect-ratio:16/10;background:#eee;overflow:hidden}
.meta{margin:28px 0 30px;border-top:1px solid var(--line)}
.meta-row{display:grid;grid-template-columns:150px 1fr;padding:11px 0;border-bottom:1px solid var(--line);font-size:14px}
.meta-row span:first-child{color:#777}
.btn{display:inline-block;background:var(--accent);color:#fff;text-decoration:none;padding:13px 24px;font-size:14px;font-weight:600}
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.visual{aspect-ratio:4/3;background:#eceff1;overflow:hidden}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.chip{border:1px solid #ddd;padding:8px 12px;font-size:13px}
.cards-5,.cards-4,.cards-3{display:grid;gap:18px;margin-top:34px}
.cards-5{grid-template-columns:repeat(5,1fr)}
.cards-4{grid-template-columns:repeat(4,1fr)}
.cards-3{grid-template-columns:repeat(3,1fr)}
.card{background:#fff;border:1px solid var(--line)}
.card-img{aspect-ratio:1/1;background:#eef0f2;overflow:hidden}
.card-body{padding:15px 16px}
.card-body h3{font-size:16px}
.glass-note{margin-top:22px;color:#777;font-size:13px}
.options{display:grid;grid-template-columns:repeat(5,1fr);gap:28px;margin-top:38px}
.option-image{height:185px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:center;padding:10px 8px 18px}
.option-image img{width:100%;height:100%;object-fit:contain}
.option-index{margin-top:17px;font-size:11px;color:#a1a1a1;letter-spacing:.12em}
.option-title{margin-top:6px;font-size:16px;line-height:1.35;font-weight:600}
.option-spec{margin-top:7px;color:var(--muted);font-size:13px;line-height:1.45;min-height:38px}
.mount-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-top:34px}
.mount-card{border:1px solid var(--line);background:#fff}
.mount-image{aspect-ratio:16/10;background:#f2f3f3;overflow:hidden}
.mount-body{padding:22px}
.mount-body h3{margin-bottom:8px}

.single-mount{width:72%;margin-top:34px;border:1px solid var(--line);background:#fff}
.single-mount-image{width:100%;aspect-ratio:16/10;overflow:hidden;background:#f3f3f3}
.single-mount-image img{width:100%;height:100%;object-fit:cover;display:block}
.single-mount-content{padding:22px 24px 26px}
.single-mount-content h3{margin:6px 0 10px;font-size:18px;font-weight:600}
.single-mount-content p{margin:0;color:#808080;font-size:15px;line-height:1.7}

.detail-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:30px}
.detail-grid-4{grid-template-columns:repeat(2,1fr);gap:18px}
.detail{aspect-ratio:4/3;background:#eef1f2;position:relative;overflow:hidden}
.detail span{position:absolute;left:12px;bottom:10px;background:rgba(255,255,255,.93);padding:6px 9px;font-size:12px}
table{width:100%;border-collapse:collapse;margin-top:28px;font-size:14px}
th,td{padding:10px 14px;border:1px solid #e1e1e1;text-align:left}
th{background:#f5f5f5;font-weight:600}
.application .card-img{aspect-ratio:4/3}
.gallery{display:grid;grid-template-columns:1.45fr .55fr;gap:16px;margin-top:30px}
.gallery-main{aspect-ratio:4/3;background:#e6e9eb;overflow:hidden}
.gallery-side{display:grid;grid-template-rows:1fr 1fr;gap:16px}
.gallery-side div{background:#eef1f2;overflow:hidden}
.process{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin-top:30px}
.process div{background:#f6f6f6;padding:18px 12px;min-height:100px;font-size:13px;border-top:3px solid #ddd}
.related .card-img{aspect-ratio:16/10}.related-two{grid-template-columns:repeat(2,minmax(0,1fr));max-width:980px}.related-two .card{min-width:0}
.footer-cta{background:#1f1f1f;color:#fff;padding:70px 0}
.footer-cta p{color:#c9c9c9;max-width:720px;margin:16px 0 24px}
.note{background:#fff7e8;border-bottom:1px solid #f0dfbd;padding:10px 24px;text-align:center;font-size:12px;color:#7a6540}
@media(max-width:1050px){.related-two{grid-template-columns:repeat(2,minmax(0,1fr));max-width:none}
  .hero-grid,.split,.mount-grid,.gallery{grid-template-columns:1fr}
  .options{grid-template-columns:repeat(3,1fr)}
  .cards-5,.cards-4{grid-template-columns:repeat(2,1fr)}
  .cards-3{grid-template-columns:1fr}
  .detail-grid{grid-template-columns:repeat(2,1fr)}
  .process{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:700px){.related-two{grid-template-columns:1fr}
  .container{width:calc(100% - 28px)}.single-mount{width:100%}
  .section{padding:50px 0}
  .hero{padding:36px 0 44px}
  h1{font-size:28px}
  h2{font-size:23px}
  .options{grid-template-columns:repeat(2,1fr);gap:24px 16px}
  .option-image{height:150px}
  .cards-5,.cards-4,.detail-grid{grid-template-columns:1fr 1fr}.detail-grid-4{grid-template-columns:1fr}
  .process{grid-template-columns:1fr 1fr}
  .meta-row{grid-template-columns:120px 1fr}
}