:root{
  --bg:#ffffff;
  --fg:#16181d;
  --muted:#6b7280;
  --line:#e7e9ee;
  --line-strong:#d4d7de;
  --accent:#ff6a2b;
  --accent-soft:#fff1ea;
  --radius:14px;
  --shadow:0 1px 2px rgba(16,18,29,.04),0 8px 24px rgba(16,18,29,.06);
  --maxw:1120px;
  --footer-py:22px;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  color:var(--fg);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
h1,h2,h3{letter-spacing:-.3px;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:var(--promo-h,0px);z-index:30;
  background:rgba(255,255,255,.86);backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:62px;gap:16px;}
.brand-mark{display:flex;align-items:center;gap:10px;font-weight:650;letter-spacing:.1px;}
.brand-mark .dot{width:10px;height:10px;border-radius:50%;background:var(--accent);flex:none;}
.site-header nav{display:flex;align-items:center;gap:18px;}
.site-header nav a{color:var(--muted);font-size:14px;}
.site-header nav a:hover{color:var(--fg);}

/* ---------- Language switcher ---------- */
.lang{position:relative;flex:none;}
.lang-btn{
  display:inline-flex;align-items:center;gap:7px;height:34px;padding:0 11px;
  border:1px solid var(--line-strong);border-radius:999px;background:#fff;cursor:pointer;
  font-size:13px;color:var(--fg);font-family:inherit;transition:.15s;
}
.lang-btn:hover{border-color:var(--accent);color:var(--accent);}
.lang-btn .caret{width:9px;height:9px;transition:transform .18s;}
.lang-btn[aria-expanded="true"] .caret{transform:rotate(180deg);}
.lang-menu{
  position:absolute;right:0;top:calc(100% + 8px);min-width:170px;z-index:40;
  background:#fff;border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);padding:6px;
}
.lang-menu[hidden]{display:none;}
.lang-menu a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:8px 10px;border-radius:8px;font-size:14px;color:var(--fg);
}
.lang-menu a:hover{background:#f5f6f8;}
.lang-menu a[aria-current="true"]{color:var(--accent);font-weight:600;}
.lang-menu a[aria-current="true"]::after{content:"✓";font-size:12px;}

/* ---------- Home ---------- */
.home-hero{padding:76px 0 36px;}
.home-hero h1{font-size:36px;line-height:1.18;margin:0 0 12px;letter-spacing:-.7px;}
.home-hero p{color:var(--muted);font-size:16px;max-width:660px;margin:0;}
.brand-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;padding:24px 0 64px;}
.brand-card{
  border:1px solid var(--line);border-radius:var(--radius);padding:28px;background:#fff;
  transition:.18s ease;display:flex;flex-direction:column;gap:14px;min-height:210px;
}
.brand-card:hover{border-color:var(--line-strong);box-shadow:var(--shadow);transform:translateY(-2px);}
.brand-card .logo{height:48px;display:flex;align-items:center;}
.brand-card .logo img{height:48px;width:auto;}
.brand-card h3{margin:0;font-size:20px;}
.brand-card .tag{color:var(--muted);font-size:14px;flex:1;}
.brand-card .meta{color:var(--muted);font-size:12px;}
.brand-card .enter{margin-top:4px;color:var(--accent);font-weight:600;font-size:14px;}

/* ---------- Brand page ---------- */
.brand-hero{padding:48px 0 24px;border-bottom:1px solid var(--line);}
.brand-hero .top{display:flex;align-items:center;gap:20px;}
.brand-hero .logo{height:64px;display:flex;align-items:center;}
.brand-hero .logo img{height:64px;width:auto;}
.brand-hero h1{margin:0;font-size:30px;letter-spacing:-.5px;}
.brand-hero .tag{color:var(--muted);margin-top:6px;}
.brand-hero .desc{color:#374151;margin-top:16px;max-width:760px;}
.search-wrap{position:sticky;top:calc(62px + var(--promo-h,0px));z-index:20;background:var(--bg);padding:18px 0;border-bottom:1px solid var(--line);}
.search-bar{position:relative;max-width:560px;}
.search-bar .ico{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--muted);display:flex;}
.search-bar input{
  width:100%;height:46px;border:1px solid var(--line-strong);border-radius:999px;
  padding:0 18px 0 44px;font-size:15px;outline:none;background:#fff;transition:.15s;font-family:inherit;
}
.search-bar input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);}
.search-meta{color:var(--muted);font-size:13px;margin-top:10px;}
.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:18px;padding:28px 0 64px;}
.product-card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;transition:.18s;display:flex;flex-direction:column;}
.product-card:hover{border-color:var(--line-strong);box-shadow:var(--shadow);transform:translateY(-2px);}
.product-card .thumb{aspect-ratio:4/3;background:#f3f4f6;overflow:hidden;}
.product-card .thumb img{width:100%;height:100%;object-fit:cover;}
.product-card .body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;}
.product-card .name{font-weight:600;font-size:16px;}
.product-card .chips{display:flex;gap:8px;flex-wrap:wrap;}
.chip{font-size:12px;color:var(--muted);background:#f3f4f6;border-radius:6px;padding:3px 8px;}
.chip.model{color:var(--accent);background:var(--accent-soft);}
.empty{color:var(--muted);padding:40px 0;text-align:center;grid-column:1/-1;}

/* ---------- Product detail ---------- */
.crumbs{color:var(--muted);font-size:13px;padding:22px 0 0;display:flex;gap:8px;flex-wrap:wrap;}
.crumbs a:hover{color:var(--accent);}
.crumbs .sep{color:#c4c8cf;}

.pd{display:grid;grid-template-columns:1.05fr .95fr;gap:44px;padding:22px 0 40px;align-items:start;}
.pd-info h1{font-size:30px;margin:10px 0 12px;letter-spacing:-.6px;line-height:1.25;}
.pd-meta{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:16px;}
.pd-summary{font-size:17px;color:#374151;margin:0 0 22px;}

/* Gallery */
.gallery .main{position:relative;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#f3f4f6;aspect-ratio:4/3;}
.gallery .main img{width:100%;height:100%;object-fit:cover;}
.gnav{
  position:absolute;top:50%;transform:translateY(-50%);width:38px;height:38px;border-radius:50%;
  border:1px solid var(--line);background:rgba(255,255,255,.92);cursor:pointer;color:var(--fg);
  display:flex;align-items:center;justify-content:center;font-size:18px;line-height:1;
  transition:.15s;backdrop-filter:blur(6px);
}
.gnav:hover{border-color:var(--accent);color:var(--accent);}
.gnav.prev{left:12px;} .gnav.next{right:12px;}
.gallery .thumbs{display:grid;grid-template-columns:repeat(6,1fr);gap:8px;margin-top:10px;}
.gallery .thumbs button{
  aspect-ratio:4/3;border:1px solid var(--line);border-radius:9px;overflow:hidden;padding:0;
  background:#f3f4f6;cursor:pointer;transition:.15s;
}
.gallery .thumbs button:hover{border-color:var(--line-strong);}
.gallery .thumbs button.active{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-soft);}
.gallery .thumbs img{width:100%;height:100%;object-fit:cover;}

/* Highlights */
.highlights{list-style:none;margin:0 0 22px;padding:0;display:flex;flex-direction:column;gap:11px;}
.highlights li{position:relative;padding-left:26px;font-size:15px;color:#2c313a;}
.highlights li::before{
  content:"";position:absolute;left:0;top:8px;width:14px;height:8px;
  border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);
  transform:rotate(-45deg);
}

/* YouTube */
.yt-link{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 16px;border-radius:999px;
  border:1px solid var(--line-strong);font-size:14px;font-weight:500;transition:.15s;
}
.yt-link:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft);}

/* Sections */
.pd-section{padding:34px 0;border-top:1px solid var(--line);}
.pd-section h2{font-size:13px;margin:0 0 18px;color:var(--muted);text-transform:uppercase;letter-spacing:.9px;font-weight:600;}
.video-facade{
  position:relative;aspect-ratio:16/9;border-radius:var(--radius);overflow:hidden;cursor:pointer;
  background:linear-gradient(135deg,#20232b,#343845 60%,#1d2027);display:flex;align-items:center;justify-content:center;
}
.video-facade .play{
  width:68px;height:48px;border-radius:14px;background:rgba(255,255,255,.94);color:#111;
  display:flex;align-items:center;justify-content:center;font-size:18px;padding-left:4px;
  transition:.18s;box-shadow:0 8px 30px rgba(0,0,0,.28);
}
.video-facade:hover .play{transform:scale(1.06);}
.video-facade .vlabel{position:absolute;left:18px;bottom:16px;color:#fff;font-size:14px;opacity:.9;}
.video-facade.playing{cursor:default;}
.video-facade iframe{width:100%;height:100%;border:0;}

/* Video grid (up to 6 videos) */
.videos-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:18px;}
.video-card{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#fff;transition:.15s;}
.video-card:hover{border-color:var(--line-strong);box-shadow:var(--shadow);}
.video-card .video-facade{border-radius:0;}
.vcap{padding:12px 16px 14px;display:flex;align-items:center;justify-content:space-between;gap:14px;}
.vtitle{font-size:14px;font-weight:500;}
.vlink{font-size:13px;color:var(--muted);white-space:nowrap;flex:none;}
.vlink:hover{color:var(--accent);}

/* Specs */
.specs{width:100%;border-collapse:collapse;}
.specs td{padding:13px 0;border-bottom:1px solid var(--line);font-size:14.5px;vertical-align:top;}
.specs tr:last-child td{border-bottom:0;}
.specs td:first-child{color:var(--muted);width:180px;font-size:14px;}
.specs td ul{margin:0;padding-left:16px;}
.specs td li{margin:2px 0;}

/* Downloads */
.dl{
  border:1px solid var(--line);border-radius:12px;padding:15px 18px;display:flex;align-items:center;
  justify-content:space-between;gap:16px;margin-bottom:10px;transition:.15s;
}
.dl:hover{border-color:var(--accent);background:var(--accent-soft);}
.dl .label{font-weight:500;}
.dl .arrow{color:var(--accent);font-weight:600;font-size:14px;white-space:nowrap;}

/* ---------- 品牌联系方式：邮箱 / 官网 / 社媒 ---------- */
.contact-block{margin-top:20px;padding-top:18px;border-top:1px dashed var(--line);}
.ct-label{font-size:12px;text-transform:uppercase;letter-spacing:.9px;color:var(--muted);font-weight:600;margin-bottom:12px;}
.contact-links{display:flex;flex-wrap:wrap;gap:10px 22px;align-items:center;}
.contact-item{display:inline-flex;align-items:center;gap:8px;color:#374151;font-size:14px;transition:.15s;}
.contact-item:hover{color:var(--accent);}
.contact-item .ci-ico{display:flex;color:var(--muted);flex:none;}
.contact-item:hover .ci-ico{color:var(--accent);}
.socials{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
.social{
  width:34px;height:34px;border:1px solid var(--line);border-radius:10px;display:inline-flex;
  align-items:center;justify-content:center;color:#4b5563;background:#fff;transition:.15s;
}
.social:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft);transform:translateY(-1px);}
.contact-section .socials{margin-top:14px;}

/* ---------- 类别筛选 ---------- */
.cat-bar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:18px 0 0;}
.cat-label{font-size:12px;text-transform:uppercase;letter-spacing:.9px;color:var(--muted);font-weight:600;}
.cat-chip{
  border:1px solid var(--line);background:#fff;color:#374151;border-radius:999px;
  padding:6px 14px;font-size:13px;cursor:pointer;display:inline-flex;align-items:center;gap:7px;
  transition:.15s;font-family:inherit;
}
.cat-chip:hover{border-color:var(--line-strong);color:var(--fg);}
.cat-chip.active{border-color:var(--accent);background:var(--accent-soft);color:var(--accent);font-weight:600;}
.cat-chip .n{font-size:11px;color:var(--muted);background:#f3f4f6;border-radius:999px;padding:1px 7px;min-width:20px;text-align:center;}
.cat-chip.active .n{background:#fff;color:var(--accent);}
.chip.cat{color:#4b5563;background:#eef1f5;}

/* ---------- 促销滚动条（config.json → promo） ---------- */
.promo-bar{
  position:sticky;top:0;z-index:31;
  background:var(--accent);color:#fff;height:var(--promo-h,36px);overflow:hidden;
  display:flex;align-items:center;
}
.promo-track{
  display:inline-flex;align-items:center;white-space:nowrap;width:max-content;
  animation:promo-scroll var(--promo-dur,var(--promo-speed,26s)) linear infinite;
  will-change:transform;
}
.promo-bar:hover .promo-track{animation-play-state:paused;}
.promo-unit{display:inline-flex;align-items:center;flex:0 0 auto;}
.promo-item{font-size:12px;font-weight:500;letter-spacing:.1px;line-height:1;}
a.promo-item:hover{text-decoration:underline;text-underline-offset:3px;}
.promo-sep{opacity:.55;font-size:12px;padding:0 10px;}
@keyframes promo-scroll{
  from{transform:translate3d(0,0,0);}
  to{transform:translate3d(calc(-100% / var(--promo-reps,8)),0,0);}
}
@media(prefers-reduced-motion:reduce){
  .promo-track{animation:none;}
  .promo-bar{overflow-x:auto;}
}

/* ---------- 购买链接（config.json → buy） ---------- */
.buy-cta{margin-top:22px;display:flex;flex-direction:column;align-items:flex-start;gap:10px;}
.buy-btn{
  display:inline-flex;align-items:center;gap:9px;
  background:var(--accent);color:#fff;border-radius:999px;
  padding:13px 26px;font-size:15px;font-weight:600;
  box-shadow:0 6px 18px rgba(255,106,43,.26);transition:transform .18s,box-shadow .18s;
}
.buy-btn:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(255,106,43,.32);}
.buy-note{color:var(--muted);font-size:13px;letter-spacing:.1px;}
.buy-chans{display:flex;flex-wrap:wrap;align-items:center;gap:0;}
.buy-sep{margin:0 9px;color:var(--muted);}
.buy-chan{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12.5px;color:var(--muted);border:1px solid var(--line);
  border-radius:999px;padding:5px 13px;transition:.16s;
}
.buy-ic{display:inline-flex;line-height:0;}
.buy-ic svg{width:15px;height:15px;}
.buy-chan:hover{border-color:var(--accent);color:var(--accent);background:#fff7f3;}
/* 浮动购买按钮：滚动到任何位置都能直接点击跳转 */
.buy-float{
  position:fixed;right:24px;bottom:24px;z-index:60;
  display:inline-flex;align-items:center;gap:9px;
  background:var(--accent);color:#fff;border-radius:999px;
  padding:14px 24px;font-size:15px;font-weight:600;
  box-shadow:0 8px 26px rgba(16,18,29,.2);transition:transform .18s,box-shadow .18s;
}
.buy-float:hover{transform:translateY(-2px);box-shadow:0 12px 30px rgba(16,18,29,.26);}

/* ---------- Footer ---------- */
footer.site-footer{padding:var(--footer-py,22px) 0;border-top:1px solid var(--line);color:var(--muted);font-size:13px;margin-top:auto;}
footer.site-footer .container{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:10px;min-height:0;}
.footer-tag{font-weight:500;color:var(--fg);}
.footer-links{display:flex;flex-wrap:wrap;gap:8px 20px;}
.footer-links a{color:var(--muted);}
.footer-links a:hover{color:var(--accent);}
.footer-copy{font-size:12px;color:var(--muted);}

@media(max-width:900px){
  .pd{grid-template-columns:1fr;gap:26px;}
  .pd-info h1{font-size:26px;}
  .specs td:first-child{width:120px;}
  .buy-float{right:16px;bottom:16px;padding:12px 20px;}
}
@media(max-width:560px){
  .gallery .thumbs{grid-template-columns:repeat(3,1fr);}
  .home-hero h1{font-size:28px;}
  .pd-meta{gap:8px;}
  .cat-bar{padding-top:14px;gap:8px;}
  .contact-links{gap:8px 16px;}
  .social{width:32px;height:32px;}
  .promo-bar{height:var(--promo-h,36px);}
  .promo-item{font-size:12px;}
  .buy-float{left:0;right:0;bottom:0;border-radius:0;justify-content:center;padding:15px 20px;box-shadow:0 -4px 20px rgba(16,18,29,.14);}
  body.has-buy-float{padding-bottom:62px;}
}