:root{
  --brand:#79211F; --brand2:#a12e2a; --ink:#1c1a19; --mut:#6b6462;
  --bg:#faf8f7; --card:#fff; --line:#e8e2e0; --ok:#2e7d32;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:system-ui,-apple-system,"Segoe UI","Microsoft YaHei",Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.65}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
/* header */
.hd{position:sticky;top:0;z-index:50;background:#fff;border-bottom:1px solid var(--line)}
.hd-in{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.logo{display:flex;align-items:center;gap:10px}
.logo-img{height:34px;width:auto}
.logo-txt{font-weight:800;letter-spacing:.14em;color:var(--brand);font-size:17px}
.logo-txt em{font-style:normal;font-weight:600;color:var(--ink);letter-spacing:.2em}
.nav{display:flex;gap:4px;flex-wrap:wrap}
.nav a{padding:8px 13px;border-radius:6px;font-size:15px;color:var(--mut)}
.nav a:hover{color:var(--brand);background:#f6efee}
.nav a.on{color:var(--brand);font-weight:700;background:#f6efee}
/* hero */
.hero{background:linear-gradient(135deg,#241413 0%,#3d1c1a 55%,var(--brand) 130%);color:#fff}
.hero-in{display:grid;grid-template-columns:1.1fr .9fr;gap:34px;align-items:center;padding:56px 20px}
.hero h1{font-size:44px;line-height:1.22;font-weight:800}
.hero h1 b{color:#ffd9c9}
.hero-sub{margin:18px 0 26px;color:#e8d5d2;font-size:17px;max-width:34em}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.hero-img img{border-radius:12px;box-shadow:0 18px 50px rgba(0,0,0,.45)}
.btn{display:inline-block;padding:11px 22px;border-radius:8px;font-weight:700;font-size:15px;transition:.15s}
.btn-p{background:var(--brand);color:#fff}.btn-p:hover{background:var(--brand2)}
.btn-g{border:1.5px solid rgba(255,255,255,.6);color:#fff}.btn-g:hover{border-color:#fff}
section.sec .btn-g, .more .btn-g{border-color:var(--brand);color:var(--brand)}
section.sec .btn-g:hover,.more .btn-g:hover{background:var(--brand);color:#fff}
/* stats */
.stats{background:#fff;border-bottom:1px solid var(--line)}
.stats-in{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;padding:26px 20px}
.stat b{display:block;font-size:30px;color:var(--brand)}
.stat span{color:var(--mut);font-size:14px}
/* sections */
.sec{padding:56px 0}.sec.alt{background:#fff}
.sec-t{text-align:center;font-size:30px;margin-bottom:30px;font-weight:800}
.sec-t.l{text-align:left}
/* series cards */
.series-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.s-card{background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;display:flex;flex-direction:column}
.s-card img{aspect-ratio:16/9;object-fit:cover;width:100%}
.s-txt{padding:16px 18px 18px}
.s-txt h3{font-size:19px;color:var(--brand)}
.s-txt p{color:var(--mut);font-size:14px;margin:6px 0 8px}
.s-n{font-size:13px;color:var(--brand);font-weight:700}
/* product grid */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:.15s}
.card:hover{box-shadow:0 10px 28px rgba(121,33,31,.12);transform:translateY(-2px)}
.card-img{background:#fff;padding:14px}
.card-img img{aspect-ratio:4/3;object-fit:contain}
.card-body{padding:12px 16px 18px}
.card-series{font-size:12px;color:var(--brand);font-weight:700;letter-spacing:.05em}
.card-body h3{font-size:17px;margin:2px 0 4px}
.card-body p{font-size:13.5px;color:var(--mut)}
.more{text-align:center;margin-top:28px}
/* why */
.split{display:grid;grid-template-columns:1.05fr .95fr;gap:34px;align-items:center}
.why{list-style:none}
.why li{padding:10px 0 10px 30px;position:relative;border-bottom:1px dashed var(--line)}
.why li:before{content:"✓";position:absolute;left:4px;color:var(--brand);font-weight:800}
.split-img img{border-radius:12px}
/* page head */
.pghd{background:linear-gradient(120deg,#2b1614,var(--brand));color:#fff;padding:40px 0}
.pghd h1{font-size:32px}
.pghd p{color:#e8d5d2;margin-top:6px}
/* product groups */
.sgrp{padding:38px 0 8px}
.sgrp-t{font-size:24px;color:var(--brand)}
.sgrp-d{color:var(--mut);margin:2px 0 12px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}
.chip{background:#f6efee;color:var(--brand);border-radius:999px;padding:4px 12px;font-size:13px}
/* detail */
.dt{padding:34px 0;border-bottom:1px solid var(--line)}
.back{display:inline-block;color:var(--brand);font-weight:700;margin-bottom:16px}
.dt-top{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center}
.dt-img{background:#fff;border:1px solid var(--line);border-radius:12px;padding:20px}
.dt-img img{max-height:420px;object-fit:contain;margin:0 auto}
.dt-info h1{font-size:30px;margin:4px 0 6px}
.dt-tag{color:var(--mut);font-size:16px;margin-bottom:20px}
.dt-cta{display:flex;gap:12px;flex-wrap:wrap}
.dt-cta .btn-g{border-color:var(--brand);color:var(--brand)}
.dt-cols{display:grid;grid-template-columns:1.1fr .9fr;gap:28px;margin-top:30px}
.dt-blk{margin-top:26px}
.dt-blk h2{font-size:20px;border-left:4px solid var(--brand);padding-left:10px;margin-bottom:14px}
.spec{width:100%;border-collapse:collapse;background:#fff}
.spec th,.spec td{border:1px solid var(--line);padding:9px 12px;text-align:left;font-size:14.5px}
.spec th{width:38%;background:#faf5f4;color:var(--ink);font-weight:600}
.feats{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:8px 22px}
.feats li{padding-left:24px;position:relative;font-size:14.5px}
.feats li:before{content:"◆";position:absolute;left:0;color:var(--brand);font-size:11px;top:4px}
.dt-card{border:1px solid var(--line);border-radius:10px;background:#fff}
/* gallery */
.gal{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;padding:30px 0}
.gal figure{background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}
.gal img{aspect-ratio:4/3;object-fit:cover;width:100%}
.gal figcaption{font-size:13px;color:var(--mut);padding:8px 10px}
/* about */
.about{padding:10px 20px 40px}
.tl{list-style:none;border-left:3px solid var(--brand);margin-left:8px}
.tl li{padding:6px 0 14px 24px;position:relative;color:var(--mut)}
.tl li:before{content:"";position:absolute;left:-8.5px;top:14px;width:14px;height:14px;border-radius:50%;background:#fff;border:3px solid var(--brand)}
.tl b{color:var(--brand);margin-right:10px}
/* download */
.dl{padding:34px 0}
.dl-card{display:grid;grid-template-columns:280px 1fr;gap:26px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px;align-items:center}
.dl-card img{border:1px solid var(--line);border-radius:8px}
.dl-note{margin-top:18px;color:var(--mut);font-size:14px}
/* contact */
.ct-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;padding:34px 0}
.ct-card{background:#fff;border:1px solid var(--line);border-radius:12px;padding:24px}
.ct-card h2{font-size:19px;color:var(--brand);margin-bottom:12px}
.ct-card dl{display:grid;grid-template-columns:auto 1fr;gap:8px 18px}
.ct-card dt{color:var(--mut);font-size:14px}
.ct-card dd a{color:var(--brand)}
/* footer */
.ft{background:#221312;color:#cfc3c1;margin-top:56px}
.ft-grid{display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:30px;padding:44px 20px 30px}
.ft h4{color:#fff;margin-bottom:12px;font-size:15px;letter-spacing:.06em}
.ft-logo{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.ft-logo img{height:30px}
.ft-logo b{color:#fff;letter-spacing:.15em}
.ft-c{font-size:14px;margin-bottom:10px}
.ft-c a{color:#ffb4ab}
.ft-addr{color:#9d8f8d;font-size:13px}
.ft-nav{list-style:none}
.ft-nav li{margin-bottom:8px;font-size:14px}
.ft-nav a:hover{color:#fff}
.ft-bar{border-top:1px solid #3a2523;padding:14px 0;font-size:13px}
.ft-bar .wrap{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}
.ft-bar a{color:#9d8f8d}
/* lang */
.lang-btn{position:fixed;right:18px;bottom:18px;z-index:60;background:var(--brand);color:#fff;border:0;border-radius:999px;padding:10px 16px;font-weight:800;font-size:14px;cursor:pointer;box-shadow:0 6px 18px rgba(0,0,0,.25)}
.lang-btn:hover{background:var(--brand2)}
html[lang="en"] .cn{display:none}
html[lang="zh-CN"] .en{display:none}
@media (max-width:960px){
  .hero-in,.split,.dt-top,.dt-cols,.ct-grid,.dl-card{grid-template-columns:1fr}
  .series-grid,.grid{grid-template-columns:repeat(2,1fr)}
  .gal{grid-template-columns:repeat(3,1fr)}
  .stats-in{grid-template-columns:repeat(2,1fr)}
  .ft-grid{grid-template-columns:1fr 1fr}
  .hd-in{flex-direction:column;height:auto;padding:10px 0}
  .hero h1{font-size:33px}
}
@media (max-width:620px){
  .series-grid,.grid,.gal{grid-template-columns:1fr}
  .ft-grid{grid-template-columns:1fr}
  .feats{grid-template-columns:1fr}
}
/* news */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.n-card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px 20px;display:block}
.n-card:hover{box-shadow:0 8px 22px rgba(121,33,31,.1)}
.n-card time{font-size:13px;color:var(--brand);font-weight:700}
.n-card h3{font-size:16.5px;margin:4px 0 6px}
.n-card p{font-size:13.5px;color:var(--mut)}
.news-list{padding:30px 20px 10px}
.n-item{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px 26px;margin-bottom:18px}
.n-item time{font-size:13px;color:var(--brand);font-weight:700}
.n-item h2{font-size:21px;margin:4px 0 8px}
.n-item p{color:var(--mut)}
@media (max-width:960px){.news-grid{grid-template-columns:1fr}}