/* ============================================================
   MINGSEAT — warm editorial system
   ground: bone  |  ink: warm black  |  accent: signal orange  (hero stays dark)
   one type family, five sizes, no rules, no gradients, no glows
   ============================================================ */

:root{
  --ground:#F6F4EF;
  --surface:#FFFFFF;
  --surface-2:#EDEAE2;
  --surface-3:#E4E0D5;
  --ink:#1A1917;
  --ink-2:#5C5952;
  --ink-3:#8C8880;
  --accent:#C4471F;
  --accent-2:#A53A17;
  --accent-soft:#F8E8E1;
  --dark:#1A1917;
  --on-dark:#F6F4EF;
  --on-dark-2:#A8A49B;
  --r-card:10px;
  --r-btn:6px;
  --max:1280px;
  --ease:cubic-bezier(.7,0,.25,1);
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue",Arial,
         "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans Arabic",sans-serif;
}

*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  background:var(--ground);color:var(--ink);font-family:var(--sans);
  font-size:17px;line-height:1.65;letter-spacing:-.006em;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
::selection{background:var(--accent);color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

.wrap{max-width:var(--max);margin:0 auto;padding:0 28px}
section{scroll-margin-top:80px}

/* ---------- type ---------- */
h1{font-size:clamp(34px,4.5vw,62px);line-height:1.04;font-weight:600;letter-spacing:-.032em;max-width:14ch;text-wrap:balance}
h2{font-size:clamp(27px,3.3vw,42px);line-height:1.1;font-weight:600;letter-spacing:-.028em;max-width:24ch}
h3{font-size:19px;line-height:1.3;font-weight:600;letter-spacing:-.012em}
p{max-width:62ch}
.lead{font-size:18px;line-height:1.62;color:var(--ink-2);max-width:56ch}
.num{font-variant-numeric:tabular-nums}

/* ---------- header ---------- */
.hd{
  position:fixed;top:0;left:0;right:0;z-index:200;
  background:transparent;transition:background .3s,box-shadow .3s;
}
.hd.stuck{background:rgba(246,244,239,.95);backdrop-filter:saturate(120%) blur(10px);box-shadow:0 1px 0 rgba(26,25,23,.08)}
.hd.stuck .nav a{color:var(--ink-2)}
.hd.stuck .nav a:hover{color:#F7F6F2}
.hd.stuck .lang button{color:var(--ink-3)}
.hd.stuck .lang button.on{background:#F7F6F2;color:#0A0A0B}
.hd.stuck .burger i{background:var(--ink)}
.hd.stuck .brand{color:var(--ink)}
.hd.stuck .brand-mark{background:var(--ink);color:var(--ground)}
.hd-in{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;font-size:15px;letter-spacing:.16em;color:#F7F6F2;transition:color .3s}
.brand-mark{
  width:30px;height:30px;border-radius:4px;background:#F7F6F2;color:#0A0A0B;
  display:grid;place-items:center;font-size:15px;font-weight:600;flex:0 0 auto;
}
.brand-mark.sm{width:26px;height:26px;border-radius:3px;font-size:13px}
.nav{display:flex;gap:28px}
.nav a{font-size:14.5px;color:rgba(247,246,242,.76);transition:color .2s}
.nav a:hover{color:#F7F6F2}
.hd-r{display:flex;align-items:center;gap:16px}
.lang{display:flex;gap:2px}
.lang button{
  font-size:12px;font-weight:500;color:rgba(247,246,242,.62);padding:5px 9px;
  border-radius:4px;transition:.18s;
}
.lang button.on{background:#F7F6F2;color:#0A0A0B}
.lang button:hover:not(.on){color:#F7F6F2;background:rgba(255,255,255,.1)}
.burger{display:none;width:40px;height:40px;position:relative}
.burger i{position:absolute;left:9px;right:9px;height:1.5px;background:var(--ink);transition:.3s var(--ease)}
.burger i:nth-child(1){top:15px}
.burger i:nth-child(2){bottom:15px}
.burger.on i:nth-child(1){top:19px;transform:rotate(45deg)}
.burger.on i:nth-child(2){bottom:19px;transform:rotate(-45deg)}

.drawer{
  position:fixed;top:72px;left:0;right:0;z-index:190;background:var(--ground);
  padding:8px 28px 24px;transform:translateY(-115%);transition:transform .4s var(--ease);
  box-shadow:0 12px 30px -18px rgba(26,25,23,.3);
}
.drawer.on{transform:translateY(0)}
.drawer a{display:block;padding:16px 0;font-size:17px;color:var(--ink-2);border-bottom:1px solid var(--surface-3)}
.drawer a:last-child{border:0;color:var(--accent);font-weight:600}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background:var(--accent);color:#fff;font-size:15px;font-weight:550;
  padding:14px 26px;border-radius:var(--r-btn);
  transition:background .2s,transform .18s var(--ease);
}
.btn:hover{background:var(--accent-2)}
.btn:active{transform:scale(.99)}
.btn.ghost{background:transparent;color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.btn.ghost:hover{background:var(--ink);color:var(--ground)}
.btn.sm{padding:10px 18px;font-size:14px}
.btn.block{width:100%}
.btn svg{flex:0 0 auto}

/* ---------- reveal ---------- */
.rv{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ease),transform .7s var(--ease);transition-delay:var(--d,0s)}
.rv.in{opacity:1;transform:none}

/* ============================================================
   HERO — full-bleed video
   ============================================================ */
.hero{position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:flex-end;background:#0A0A0B;overflow:hidden}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.hero-scrim{
  position:absolute;inset:0;z-index:1;pointer-events:none;
  background:
    linear-gradient(90deg,rgba(10,10,11,.86) 0%,rgba(10,10,11,.62) 34%,rgba(10,10,11,.22) 62%,rgba(10,10,11,.06) 100%),
    linear-gradient(180deg,rgba(10,10,11,.5) 0%,rgba(10,10,11,.12) 30%,rgba(10,10,11,.42) 68%,rgba(10,10,11,.97) 100%);
}
.hero-in{position:relative;z-index:2;flex:1;display:flex;align-items:flex-end;padding-bottom:52px}
.hero-l{max-width:900px}
.hero h1{
  text-shadow:0 2px 30px rgba(0,0,0,.45);
  font-size:clamp(42px,7.2vw,104px);line-height:.96;font-weight:600;letter-spacing:-.04em;
  max-width:16ch;color:#F7F6F2;text-wrap:balance;
}
.hero-sub{text-shadow:0 1px 18px rgba(0,0,0,.5);font-size:clamp(16px,1.35vw,20px);line-height:1.6;color:rgba(247,246,242,.9);max-width:46ch;margin-top:26px;margin-bottom:34px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.btn.ghost{background:transparent;color:#F7F6F2;box-shadow:inset 0 0 0 1px rgba(247,246,242,.42)}
.btn.ghost:hover{background:#F7F6F2;color:#0A0A0B}

.hero-strip{position:relative;z-index:2;background:rgba(10,10,11,.72);border-top:1px solid rgba(247,246,242,.12)}
.hero-strip-in{display:grid;grid-template-columns:repeat(4,1fr)}
.hero-strip-in>div{padding:26px 0 26px 28px}
.hero-strip-in>div:first-child{padding-left:0}
.hero-strip-in b{display:block;font-size:clamp(22px,2.4vw,32px);font-weight:500;letter-spacing:-.02em;line-height:1.1;font-variant-numeric:tabular-nums;color:#F7F6F2}
.hero-strip-in span{display:block;font-size:13.5px;color:rgba(247,246,242,.58);margin-top:6px}


/* 两段式标题 */
.hero h1 .h1-a{display:block;color:#F7F6F2}
.hero h1 .h1-b{display:block;color:rgba(247,246,242,.58);font-weight:400;margin-top:.05em}

/* 信任带 */
.trust{position:relative;z-index:2;background:#0A0A0B;border-top:1px solid rgba(247,246,242,.1)}
.trust-in{display:flex;align-items:center;gap:28px;padding:18px 0;flex-wrap:wrap}
.trust-lbl{font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:rgba(247,246,242,.38);white-space:nowrap}
.trust ul{display:flex;gap:10px 30px;list-style:none;flex-wrap:wrap;align-items:center}
.trust li{font-size:13px;color:rgba(247,246,242,.72);position:relative;white-space:nowrap}
.trust li+li::before{content:"";position:absolute;left:-15px;top:50%;width:3px;height:3px;border-radius:50%;background:rgba(247,246,242,.28);transform:translateY(-50%)}
@media(max-width:760px){
  .trust-in{gap:14px;padding:14px 0}
  .trust ul{gap:8px 22px}
  .trust li{font-size:12px}
  .trust li+li::before{left:-11px}
}

/* ============================================================
   QUOTE CONSOLE
   ============================================================ */
.quote{padding:76px 0;background:var(--surface-2)}
.quote-head{margin-bottom:34px}
.quote-head h2{margin-bottom:16px}
.qc{display:grid;grid-template-columns:minmax(0,1fr) 400px;gap:48px;align-items:start;min-width:0}
.qc-l{min-width:0}
.qc-step{font-size:13px;color:var(--ink-3);margin:0 0 12px;font-weight:500}
.qc-step:not(:first-child){margin-top:32px}
.line-tabs{display:flex;gap:8px;flex-wrap:wrap}
.line-tabs button{
  font-size:14px;padding:10px 18px;border-radius:100px;
  background:var(--surface);color:var(--ink-2);transition:.18s;
}
.line-tabs button:hover{color:var(--ink)}
.line-tabs button.on{background:var(--accent);color:#fff}

.model-strip{
  display:flex;gap:8px;overflow-x:auto;padding:2px 2px 10px;scroll-snap-type:x proximity;max-width:100%;
  mask-image:linear-gradient(90deg,#000 94%,transparent 100%);
  -webkit-mask-image:linear-gradient(90deg,#000 94%,transparent 100%);
}
[dir="rtl"] .model-strip{
  mask-image:linear-gradient(270deg,#000 94%,transparent 100%);
  -webkit-mask-image:linear-gradient(270deg,#000 94%,transparent 100%);
}
.model-strip::-webkit-scrollbar{height:3px}
.model-strip::-webkit-scrollbar-thumb{background:var(--surface-3);border-radius:3px}
.mchip{
  flex:0 0 auto;width:86px;scroll-snap-align:start;background:var(--surface);
  border-radius:8px;overflow:hidden;transition:.2s;box-shadow:inset 0 0 0 1px transparent;
}
.mchip img{width:100%;height:auto;aspect-ratio:1/1;object-fit:cover;background:#fff}
.mchip i{display:block;font-style:normal;font-size:11px;text-align:center;padding:6px 2px;color:var(--ink-2);font-variant-numeric:tabular-nums}
.mchip:hover{box-shadow:inset 0 0 0 1px var(--ink-3)}
.mchip.on{box-shadow:inset 0 0 0 2px var(--accent)}
.mchip.on i{background:var(--accent);color:#fff}

.qty-row{display:flex;align-items:baseline;gap:10px;margin-bottom:16px}
.qty-row input{
  width:180px;background:transparent;border:0;border-bottom:2px solid var(--ink);
  font-size:40px;font-weight:500;letter-spacing:-.03em;padding:0 0 4px;outline:none;
  font-variant-numeric:tabular-nums;-moz-appearance:textfield;
}
.qty-row input::-webkit-outer-spin-button,.qty-row input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.qty-row span{font-size:14px;color:var(--ink-3)}
input[type=range]{
  -webkit-appearance:none;appearance:none;width:100%;height:4px;outline:none;
  margin:0 0 8px;cursor:pointer;border-radius:2px;
  background:linear-gradient(90deg,var(--accent) 0%,var(--accent) var(--fill,10%),var(--surface-3) var(--fill,10%),var(--surface-3) 100%);
}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:22px;height:22px;border-radius:50%;background:var(--accent);border:3px solid var(--surface-2);box-shadow:0 2px 6px rgba(26,25,23,.18)}
input[type=range]::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:var(--accent);border:3px solid var(--surface-2)}
.qty-presets{display:flex;gap:6px;flex-wrap:wrap}
.qty-presets button{font-size:13px;padding:7px 14px;border-radius:100px;background:var(--surface);color:var(--ink-2);transition:.18s;font-variant-numeric:tabular-nums}
.qty-presets button:hover{color:var(--ink)}
.qty-presets button.on{background:var(--ink);color:var(--ground)}

.qc-notes{margin-top:34px;padding-top:26px;border-top:1px solid var(--surface-3);display:grid;grid-template-columns:1fr 1fr;gap:12px 26px;list-style:none}
.qc-notes li{font-size:13.5px;color:var(--ink-2);display:flex;gap:8px;align-items:baseline;line-height:1.4}
.qc-notes li::before{content://;width:5px;height:5px;border-radius:50%;background:var(--accent);flex:0 0 auto;margin-top:6px}
.qc-r{background:var(--surface);border-radius:var(--r-card);padding:22px;position:sticky;top:88px}
.qc-top{display:flex;gap:14px;align-items:center;padding-bottom:14px}
.qc-img{width:68px;height:68px;border-radius:6px;background:#fff;overflow:hidden;flex:0 0 auto}
.qc-img img{width:100%;height:100%;object-fit:cover;aspect-ratio:auto}
.qc-model{font-size:19px;font-weight:600;font-variant-numeric:tabular-nums}
.qc-spec{font-size:12.5px;color:var(--ink-2);margin-top:3px;line-height:1.45}
.qc-price-row{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}
.qc-price{font-size:38px;font-weight:500;letter-spacing:-.03em;line-height:1;font-variant-numeric:tabular-nums}
.qc-price.ask{font-size:22px;letter-spacing:-.01em;color:var(--ink-2)}
.qc-badge{font-size:13px;font-weight:600;padding:4px 9px;border-radius:4px;background:var(--accent);color:#fff}
.qc-badge[hidden]{display:none}

/* 阶梯价 */
.tiers{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--surface-3);border-radius:8px;overflow:hidden;margin:14px 0 16px}
.tiers>div{background:var(--ground);padding:12px 6px;text-align:center;transition:background .25s}
.tiers b{display:block;font-size:12px;font-weight:500;color:var(--ink-3);font-variant-numeric:tabular-nums}
.tiers span{display:block;font-size:14.5px;font-weight:600;margin-top:4px;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.tiers>div.on{background:var(--accent)}
.tiers>div.on b{color:rgba(255,255,255,.75)}
.tiers>div.on span{color:#fff}

/* 装柜 */
.load-head{display:flex;justify-content:space-between;align-items:baseline;font-size:12.5px;color:var(--ink-2);margin-bottom:10px}
.load-head b{color:var(--ink);font-size:13px;font-weight:600}
.cont-wrap{display:flex;flex-direction:column;gap:7px;margin-bottom:18px}
.cont{
  position:relative;width:100%;height:62px;
  border:2px solid rgba(244,243,239,.28);border-radius:3px;overflow:hidden;
  background:rgba(255,255,255,.03);
  display:flex;align-items:flex-end;padding:5px 6px;
}
/* 柜内顶部波纹 */
.cont::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(90deg,rgba(26,25,23,.055) 0 2px,transparent 2px 11px);
  opacity:.9;
}
.cont-grid{
  position:relative;width:100%;height:100%;
  display:grid;grid-template-columns:repeat(10,1fr);grid-template-rows:repeat(2,1fr);
  gap:1px;
}
.cont-grid i{
  display:block;background:var(--accent);opacity:.13;border-radius:2px;
  transition:opacity .3s var(--ease),transform .3s var(--ease);
  transform:scale(.9);
}
.cont-grid i.on{opacity:.9;transform:scale(1)}
.cont-n{
  position:absolute;top:5px;left:7px;font-size:10px;color:var(--ink-3);
  font-variant-numeric:tabular-nums;z-index:2;padding:0 3px;
}
.cont-more{
  display:block;text-align:center;font-size:11.5px;color:var(--ink-3);
  font-variant-numeric:tabular-nums;padding-top:2px;
}
.fine{font-size:12px;color:var(--ink-3);line-height:1.5;margin-top:14px}


/* ============================================================
   ANATOMY — hover spotlight
   ============================================================ */
.anatomy{padding:76px 0;background:var(--surface-2)}
.anatomy-head{margin-bottom:34px}
.anatomy-head h2{margin-bottom:16px}
.anatomy-in{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;align-items:start}
.anatomy-frame{
  position:relative;background:var(--surface-2);border-radius:var(--r-card);overflow:hidden;
  height:clamp(400px,58vh,560px);cursor:crosshair;
}
.anatomy-frame img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;pointer-events:none}
.anatomy-frame .an-dim{filter:brightness(.34) saturate(.8);opacity:0;transition:opacity .35s}
.anatomy-frame .an-lit{
  -webkit-mask-image:radial-gradient(circle 120px at var(--sx,50%) var(--sy,26%),#000 52%,transparent 82%);
  mask-image:radial-gradient(circle 120px at var(--sx,50%) var(--sy,26%),#000 52%,transparent 82%);
  opacity:0;transition:opacity .35s;
}
.anatomy-frame:hover .an-dim,.anatomy-frame.lit .an-dim{opacity:1}
.anatomy-frame:hover .an-lit,.anatomy-frame.lit .an-lit{opacity:1}
.spot{display:none}
.spot-label{
  position:absolute;left:50%;bottom:14px;transform:translateX(-50%);
  background:rgba(246,244,239,.96);color:var(--ink);font-size:12px;padding:6px 13px;
  border-radius:100px;white-space:nowrap;box-shadow:0 2px 10px rgba(0,0,0,.16);
  opacity:0;transition:opacity .3s;
}
.anatomy-frame:hover .spot-label,.anatomy-frame.lit .spot-label{opacity:1;z-index:7}
/* 四个部位热点，用于点击/触屏 */
.hot{
  position:absolute;width:26px;height:26px;margin:-13px 0 0 -13px;border-radius:50%;
  background:rgba(246,244,239,.9);box-shadow:0 0 0 1px rgba(26,25,23,.14);
  opacity:0;transition:opacity .3s,transform .3s;transform:scale(.7);
}
.hot::after{
  content:"";position:absolute;inset:9px;border-radius:50%;background:var(--accent);
}
.anatomy-frame:hover .hot{opacity:1;transform:scale(1)}
.hot:hover{transform:scale(1.25)}
.anatomy-steps{list-style:none;display:flex;flex-direction:column;gap:0}
.anatomy-steps li{
  padding:22px 0;border-top:1px solid var(--surface-3);
  transition:opacity .3s;cursor:default;
}
.anatomy-steps li:last-child{border-bottom:1px solid var(--surface-3)}
.anatomy-steps li.on h3{color:var(--accent)}
.anatomy-steps h3{margin-bottom:8px;font-size:19px;transition:color .25s}
.anatomy-steps p{font-size:14.5px;color:var(--ink-2);line-height:1.6;max-width:44ch}
@media(max-width:900px){
  .anatomy-in{grid-template-columns:1fr;gap:28px}
  .anatomy-frame{height:340px;cursor:default}
  .spot{display:none}
  .spot-label{display:none}
  .hot{display:none}
  .anatomy-steps li{padding:18px 0}
}


/* 3D 切换 */
.an-tabs{
  position:absolute;top:12px;left:12px;z-index:6;display:flex;gap:2px;
  background:rgba(246,244,239,.94);border-radius:100px;padding:3px;
}
.an-tabs button{
  font-size:11.5px;padding:5px 12px;border-radius:100px;color:var(--ink-2);
  transition:background .2s,color .2s;
}
.an-tabs button.on{background:var(--ink);color:var(--ground)}
#anCanvas{position:absolute;inset:0;width:100%;height:100%;display:none;touch-action:pan-y}
.anatomy-frame.mode3d img,.anatomy-frame.mode3d .spot,.anatomy-frame.mode3d .spot-label,
.anatomy-frame.mode3d .hot{display:none}
.anatomy-frame.mode3d #anCanvas{display:block}
.anatomy-frame.mode3d .an-hint{opacity:1}
.an-hint{
  position:absolute;right:12px;bottom:12px;z-index:6;font-size:11px;color:var(--ink-3);
  background:rgba(246,244,239,.9);padding:4px 10px;border-radius:100px;
  opacity:0;transition:opacity .3s;pointer-events:none;
}
@media(max-width:900px){
  .an-tabs{top:8px;left:8px}
  .an-hint{display:none}
}


/* 3D 切换 */
.an-tabs{
  position:absolute;top:12px;left:12px;z-index:6;display:flex;gap:2px;
  background:rgba(255,255,255,.94);border-radius:100px;padding:3px;
}
.an-tabs button{font-size:11.5px;padding:5px 12px;border-radius:100px;color:var(--ink-2);transition:.2s}
.an-tabs button.on{background:var(--ink);color:var(--ground)}
#anCanvas{position:absolute;inset:0;width:100%;height:100%;display:none;touch-action:pan-y}
.anatomy-frame.mode3d img,.anatomy-frame.mode3d .spot,.anatomy-frame.mode3d .spot-label,
.anatomy-frame.mode3d .hot{display:none}
.anatomy-frame.mode3d #anCanvas{display:block}
.anatomy-frame.mode3d .an-hint{opacity:1}
.an-hint{
  position:absolute;right:12px;bottom:12px;z-index:6;font-size:11px;color:var(--ink-2);
  background:rgba(255,255,255,.9);padding:4px 10px;border-radius:100px;
  opacity:0;transition:opacity .3s;pointer-events:none;
}
.an-loading{
  position:absolute;inset:0;display:none;place-items:center;z-index:5;
  font-size:12.5px;color:var(--ink-3);
}
.anatomy-frame.loading .an-loading{display:grid}
@media(max-width:900px){
  .an-tabs{top:8px;left:8px}
  .an-hint{display:none}
}

/* ============================================================
   CATALOG
   ============================================================ */
.catalog{padding:76px 0;background:var(--ground)}
.cat-head{margin-bottom:32px;display:flex;justify-content:space-between;align-items:flex-end;gap:32px;flex-wrap:wrap}
.cat-head h2{margin-bottom:14px}
.cl-tools{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-bottom:18px}
.search{flex:1 1 240px;display:flex;align-items:center;gap:10px;background:var(--surface);border-radius:100px;padding:0 18px;height:46px}
.search svg{color:var(--ink-3);flex:0 0 auto}
.search input{flex:1;border:0;outline:none;background:none;font-size:15px;min-width:0}
.search input::placeholder{color:var(--ink-3)}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chips button{font-size:14px;padding:9px 16px;border-radius:100px;background:var(--surface);color:var(--ink-2);transition:.18s}
.chips button:hover{color:var(--ink)}
.chips button.on{background:var(--ink);color:var(--ground)}
.sort{
  height:46px;padding:0 36px 0 16px;border-radius:100px;border:0;background:var(--surface);
  font-size:14px;appearance:none;cursor:pointer;outline:none;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='11' height='11' viewBox='0 0 24 24' fill='none' stroke='%231A1917' stroke-width='2.5'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 15px center;
}
.cl-count{font-size:13px;color:var(--ink-3);margin-bottom:22px;font-variant-numeric:tabular-nums}
.grid{
  display:grid;grid-template-columns:repeat(4,1fr);gap:0;
  border-top:1px solid rgba(26,25,23,.14);
  border-left:1px solid rgba(26,25,23,.14);
}
.card{
  background:var(--surface);border-radius:0;overflow:hidden;display:flex;flex-direction:column;
  position:relative;cursor:pointer;content-visibility:auto;contain-intrinsic-size:0 400px;
  border-right:1px solid rgba(26,25,23,.14);
  border-bottom:1px solid rgba(26,25,23,.14);
}
.card:hover{background:#FCFBF8}
.card-im{position:relative;aspect-ratio:1/1;background:#FFFFFF;overflow:hidden;border-bottom:1px solid rgba(26,25,23,.08)}
.card-im img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;padding:8px;transition:transform .5s var(--ease)}
.card:hover .card-im img{transform:scale(1.05)}
.card-bd{padding:13px 14px 15px;flex:1;display:flex;flex-direction:column;gap:3px}
.card:hover .card-bd{transform:none}
.card-m{font-size:13.5px;font-weight:600;letter-spacing:.02em;font-variant-numeric:tabular-nums}
.card-s{font-size:11.5px;color:var(--ink-3);line-height:1.45;flex:1;letter-spacing:.01em}
.card-p{font-size:13.5px;font-weight:600;color:var(--ink);margin-top:8px;padding-top:8px;border-top:1px solid rgba(26,25,23,.1);font-variant-numeric:tabular-nums;letter-spacing:.01em}
.card-p.ask{color:var(--ink-3);font-weight:400;font-size:12.5px}
.card-add{
  position:absolute;top:8px;right:8px;width:26px;height:26px;border-radius:2px;
  background:rgba(246,244,239,.95);color:var(--ink);display:grid;place-items:center;
  font-size:16px;line-height:1;opacity:0;transition:.2s;z-index:3;
}
.card:hover .card-add{opacity:1}
.card-add:hover{background:var(--ink);color:var(--ground)}
.card-add.on{opacity:1;background:var(--accent);color:#fff}
.cl-empty{padding:80px 0;text-align:center;color:var(--ink-3)}

.cl-more{display:flex;justify-content:center;margin-top:28px}
.cl-more button{
  font-size:14px;padding:13px 28px;border-radius:100px;background:var(--surface);
  color:var(--ink);transition:.2s;font-variant-numeric:tabular-nums;
}
.cl-more button:hover{background:var(--ink);color:var(--ground)}

/* ============================================================
   PROCESS (dark band)
   ============================================================ */
.process{padding:76px 0;background:var(--dark);color:var(--on-dark)}
.process-in{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1.15fr);gap:72px;align-items:start}
.process-l h2{color:var(--on-dark);margin-bottom:22px}
.process-l .lead{color:var(--on-dark-2);font-size:17px}
.process-l{position:sticky;top:120px;min-width:0}
.steps{list-style:none;display:flex;flex-direction:column;gap:0}
.steps li{display:grid;grid-template-columns:1fr;gap:8px;padding:26px 0;border-top:1px solid rgba(246,244,239,.14);cursor:pointer}
.step-more{display:flex;flex-wrap:wrap;gap:6px;max-height:0;overflow:hidden;opacity:0;transition:max-height .4s var(--ease),opacity .3s,margin-top .3s}
.steps li:hover .step-more,.steps li.open .step-more{max-height:80px;opacity:1;margin-top:10px}
.step-more span{font-size:11.5px;padding:5px 11px;border-radius:100px;background:rgba(246,244,239,.14);color:#CFCBC2;white-space:nowrap}
.steps li:last-child{border-bottom:1px solid rgba(246,244,239,.14)}
.steps h3{color:var(--on-dark);font-size:18px}
.steps p{font-size:14.5px;color:var(--on-dark-2);line-height:1.6;max-width:54ch}
.steps .st-n{display:none}

/* ============================================================
   TERMS
   ============================================================ */
.terms{padding:76px 0;background:var(--ground)}
.terms h2{margin-bottom:30px}
.term-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.term{background:var(--surface);border-radius:var(--r-card);padding:26px 22px}
.term dt{font-size:13px;color:var(--ink-3);margin-bottom:10px}
.term dd{font-size:24px;font-weight:500;letter-spacing:-.02em;line-height:1.15;font-variant-numeric:tabular-nums}
.term dd small{display:block;font-size:12.5px;font-weight:400;color:var(--ink-2);margin-top:6px;letter-spacing:0}


/* ============================================================
   VIDEO BLOCKS
   ============================================================ */
.pvideo{display:grid;grid-template-columns:2fr 1fr 1fr;gap:12px;margin-bottom:56px}
.pvideo-main,.pvideo-side{position:relative;height:clamp(300px,42vh,420px);border-radius:var(--r-card);overflow:hidden;background:#111}
.pvideo video,.about-media video{width:100%;height:100%;object-fit:cover;display:block}
.pvideo video::-webkit-media-controls-panel{background:linear-gradient(transparent,rgba(0,0,0,.6))}
.pvideo-tag{
  position:absolute;left:14px;bottom:14px;background:rgba(22,21,19,.72);color:#F6F4EF;
  font-size:11.5px;padding:6px 12px;border-radius:100px;letter-spacing:.02em;
  backdrop-filter:blur(4px);
}
.about-media{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:var(--surface-3);border-radius:var(--r-card);overflow:hidden}
.about-num{background:var(--surface);padding:30px 24px}
.about-num b{display:block;font-size:36px;font-weight:500;letter-spacing:-.03em;line-height:1;font-variant-numeric:tabular-nums}
.about-num span{display:block;font-size:12.5px;color:var(--ink-3);margin-top:8px}
.about-media .pvideo-tag{left:12px;bottom:12px}
@media(max-width:900px){
  .pvideo{grid-template-columns:1fr;gap:10px;margin-bottom:36px}
  .pvideo-main{height:220px}
  .pvideo-side{height:220px}
  .about-num{padding:22px 18px}
}

/* ============================================================
   ABOUT + EXPORT
   ============================================================ */
.about{padding:76px 0;background:var(--surface-2)}
.about-in{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:64px;align-items:center}
.about-tx h2{margin-bottom:22px}
.about-tx p{color:var(--ink-2);margin-bottom:16px;font-size:16.5px}
.ab-vision{margin-top:26px;padding-top:22px;border-top:1px solid var(--surface-3);font-size:15px;line-height:1.65;color:var(--ink-2)}
.facts{display:flex;gap:40px;margin-top:28px}
.facts b{display:block;font-size:28px;font-weight:500;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.facts span{font-size:13px;color:var(--ink-3)}

/* ============================================================
   CONTACT
   ============================================================ */
.contact{padding:76px 0;background:var(--ground)}
.contact-in{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:72px;align-items:start}
.contact-l h2{margin-bottom:20px}
.contact-l .lead{margin-bottom:36px}
.ct-list{display:flex;flex-direction:column}
.ct-item{display:flex;gap:14px;align-items:flex-start;padding:16px 0;border-bottom:1px solid var(--surface-3)}
.ct-item:first-child{border-top:1px solid var(--surface-3)}
a.ct-item{transition:padding-left .25s var(--ease)}
a.ct-item:hover{padding-left:8px}
.ct-ic{flex:0 0 auto;width:30px;height:30px;border-radius:6px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;margin-top:1px}
.ct-item b{display:block;font-size:14.5px;font-weight:600}
.ct-item i{display:block;font-style:normal;font-size:13.5px;color:var(--ink-2);margin-top:2px;line-height:1.5}
.map-links{display:flex;gap:14px;font-style:normal;margin-top:6px}
.map-links a{font-size:12.5px;color:var(--accent);text-decoration:underline;text-underline-offset:2px}
.map-links a:hover{color:var(--accent-2)}
.lb-nav{
  position:absolute;top:50%;transform:translateY(-50%);width:44px;height:44px;border-radius:50%;
  background:rgba(246,244,239,.14);color:#fff;font-size:26px;line-height:1;
  display:grid;place-items:center;z-index:5;transition:background .2s;
}
.lb-nav:hover{background:rgba(246,244,239,.3)}
.lb-nav.prev{left:20px}
.lb-nav.next{right:20px}
@media(max-width:760px){.lb-nav{display:none}}

.form{background:var(--surface);border-radius:var(--r-card);padding:28px}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form label{display:block;margin-bottom:14px}
.form label>span{display:block;font-size:12.5px;color:var(--ink-2);margin-bottom:6px}
.form input,.form select,.form textarea{
  width:100%;background:var(--ground);border:0;border-radius:6px;
  padding:12px 14px;font-size:15px;outline:none;transition:box-shadow .18s;
}
.form input:focus,.form select:focus,.form textarea:focus{box-shadow:inset 0 0 0 2px var(--accent)}
.form textarea{resize:vertical;min-height:96px;line-height:1.55}
.form select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='11' height='11' viewBox='0 0 24 24' fill='none' stroke='%235C5952' stroke-width='2.5'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center}
.file-lbl{display:flex;align-items:center;gap:10px;padding:14px;border-radius:6px;background:var(--ground);color:var(--ink-2);font-size:13.5px;cursor:pointer;transition:.18s;margin-bottom:18px}
.file-lbl:hover{color:var(--ink)}
.file-lbl input{display:none}
.file-lbl.has{background:var(--accent-soft);color:var(--accent)}


/* ============================================================
   FOOTER
   ============================================================ */
.ft{background:var(--dark);color:var(--on-dark);padding:56px 0 40px}
.ft-in{display:flex;justify-content:space-between;gap:32px;flex-wrap:wrap;align-items:flex-start}
.ft-brand{display:flex;align-items:center;gap:10px}

.ft-brand b{display:block;font-size:13px;letter-spacing:.16em}
.ft-brand span{display:block;font-size:12px;color:var(--on-dark-2);margin-top:3px}
.ft-links{display:flex;gap:24px;font-size:13.5px;color:var(--on-dark-2);flex-wrap:wrap}
.ft-links a:hover{color:var(--on-dark)}
.ft-meta{font-size:12px;color:var(--on-dark-2);width:100%;margin-top:32px;padding-top:22px;border-top:1px solid rgba(246,244,239,.12)}

/* ============================================================
   LIGHTBOX
   ============================================================ */
.lb{position:fixed;inset:0;z-index:320;background:rgba(26,25,23,.94);display:grid;place-items:center;padding:28px;opacity:0;visibility:hidden;transition:opacity .3s,visibility .3s}
.lb.on{opacity:1;visibility:visible}
.lb-x{position:absolute;top:20px;right:24px;width:42px;height:42px;border-radius:50%;background:rgba(246,244,239,.12);color:#fff;font-size:24px;line-height:1;display:grid;place-items:center}
.lb-x:hover{background:rgba(246,244,239,.24)}
.lb-in{display:grid;grid-template-columns:1.05fr .95fr;max-width:960px;width:100%;background:var(--surface);border-radius:12px;overflow:hidden;transform:translateY(14px);transition:transform .35s var(--ease)}
.lb.on .lb-in{transform:none}
.lb-img{background:#F7F6F2;display:grid;place-items:center;padding:24px;min-height:340px}
.lb-img img{max-height:58vh;object-fit:contain}
.lb-tx{padding:36px 32px;display:flex;flex-direction:column}
.lb-model{font-size:26px;font-weight:600;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.lb-spec{color:var(--ink-2);font-size:15px;margin-top:8px;line-height:1.5}
.lb-price{font-size:26px;font-weight:500;margin-top:22px;color:var(--accent);font-variant-numeric:tabular-nums}
.lb-price.ask{font-size:15px;color:var(--ink-2)}
.lb-rows{margin:22px 0 26px}
.lb-rows>div{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid var(--surface-3);font-size:14px}
.lb-rows span{color:var(--ink-2)}
.lb-btns{display:flex;gap:10px;flex-wrap:wrap;margin-top:auto}
.lb-btns .btn{flex:1 1 150px}

/* ============================================================
   COMPARE BAR
   ============================================================ */
.cmp{position:fixed;left:0;right:0;bottom:0;z-index:180;background:var(--dark);color:var(--on-dark);transform:translateY(110%);transition:transform .4s var(--ease)}
.cmp.on{transform:none}
.cmp-in{max-width:var(--max);margin:0 auto;padding:12px 28px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.cmp-items{display:flex;gap:8px;overflow-x:auto;flex:1}
.cmp-item{display:flex;align-items:center;gap:8px;background:rgba(246,244,239,.1);border-radius:6px;padding:5px 8px;flex:0 0 auto}
.cmp-item img{width:28px;height:28px;object-fit:cover;border-radius:3px;background:#fff}
.cmp-item b{font-size:12px;font-weight:500;font-variant-numeric:tabular-nums}
.cmp-item button{color:var(--on-dark-2);font-size:15px;line-height:1}
.cmp-item button:hover{color:#fff}
.cmp-act{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.cmp-clear{width:32px;height:32px;border-radius:50%;background:rgba(246,244,239,.1);color:var(--on-dark-2);font-size:16px;line-height:1}
.cmp-panel{position:fixed;top:0;right:0;bottom:0;width:min(600px,100%);z-index:340;background:var(--ground);transform:translateX(100%);transition:transform .4s var(--ease);display:flex;flex-direction:column}
.cmp-panel.on{transform:none}
.cmp-head{display:flex;align-items:center;justify-content:space-between;padding:20px 24px;border-bottom:1px solid var(--surface-3)}
.cmp-head b{font-size:16px;font-weight:600}
.cmp-head button{font-size:26px;line-height:1;color:var(--ink-2)}
.cmp-body{overflow:auto;padding:20px 24px 40px}
.cmp-body table{width:100%;border-collapse:collapse;font-size:13.5px}
.cmp-body th,.cmp-body td{padding:12px 10px;text-align:left;vertical-align:top;border-bottom:1px solid var(--surface-3)}
.cmp-body td:first-child{color:var(--ink-3);font-size:12.5px;width:90px}
.cmp-body td img{width:100%;max-width:120px;border-radius:6px;background:#fff;margin-bottom:8px}
.cmp-scrim{position:fixed;inset:0;z-index:330;background:rgba(26,25,23,.5);opacity:0;visibility:hidden;transition:.3s}
.cmp-scrim.on{opacity:1;visibility:visible}

/* ============================================================
   FLOATING
   ============================================================ */
.wa{position:fixed;right:22px;bottom:170px;z-index:170;width:52px;height:52px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;transition:transform .2s var(--ease)}
.wa:hover{transform:scale(1.06)}
.friend{position:fixed;left:22px;bottom:170px;z-index:170;background:var(--surface);border-radius:100px;padding:11px 18px;font-size:13.5px;font-weight:550;box-shadow:0 6px 20px -8px rgba(26,25,23,.3);transition:transform .2s var(--ease)}
.friend:hover{transform:translateY(-2px)}

/* friend overlay */
.fo{position:fixed;inset:0;z-index:350;background:rgba(26,25,23,.6);display:grid;place-items:center;padding:24px;opacity:0;visibility:hidden;transition:.3s}
.fo.on{opacity:1;visibility:visible}
.fo-box{background:var(--surface);border-radius:14px;padding:32px;max-width:420px;width:100%;position:relative;text-align:center}
.fo-x{position:absolute;top:14px;right:16px;font-size:24px;line-height:1;color:var(--ink-3)}
.fo-box h3{margin-bottom:8px}
.fo-box p{font-size:14px;color:var(--ink-2);margin:0 auto 20px}
.fo-tabs{display:flex;gap:6px;justify-content:center;margin-bottom:20px}
.fo-tabs button{font-size:13px;padding:7px 16px;border-radius:100px;background:var(--surface-2);color:var(--ink-2)}
.fo-tabs button.on{background:var(--ink);color:var(--ground)}
.fo-qr{width:180px;height:180px;margin:0 auto 14px;border-radius:8px;object-fit:cover}
.fo-note{font-size:12.5px;color:var(--ink-3)}

body.has-cmp{padding-bottom:76px}
body.has-cmp .friend,body.has-cmp .wa{bottom:150px}
@media(max-width:760px){body.has-cmp .friend,body.has-cmp .wa{bottom:96px}}

/* ============================================================
   RTL
   ============================================================ */
[dir="rtl"] .hero-strip-in>div{padding:30px 28px 30px 0}
[dir="rtl"] .hero-strip-in>div:first-child{padding-right:0}
[dir="rtl"] .card-add{right:auto;left:10px}
[dir="rtl"] .lb-x{right:auto;left:24px}
[dir="rtl"] .cmp-panel{right:auto;left:0;transform:translateX(-100%)}
[dir="rtl"] .cmp-panel.on{transform:none}
[dir="rtl"] .wa{right:auto;left:22px}
[dir="rtl"] .friend{left:auto;right:22px}
[dir="rtl"] .form select{background-position:left 14px center}
[dir="rtl"] .sort{background-position:left 15px center;padding:0 16px 0 36px}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media(max-width:1080px){
  .qc{grid-template-columns:minmax(0,1fr)}
  .qc-r{position:static}
  .process-in{grid-template-columns:1fr;gap:40px}
  .process-l{position:static}
  .grid{grid-template-columns:repeat(3,1fr)}
  .term-grid{grid-template-columns:repeat(3,1fr)}
  .hero-in{gap:40px}
}
@media(max-width:900px){
  .nav{display:none}
  .burger{display:block}
  .hero{padding-top:92px}
  .hero-in{grid-template-columns:1fr;gap:26px;padding-bottom:34px}
  .hero-media{max-width:330px;margin:0 auto;width:100%;height:290px}
  .hero-sub{font-size:15.5px;line-height:1.55;margin-top:14px;margin-bottom:20px;max-width:100%}
  .hero-cta{margin-top:0;gap:10px}
  .hero-cta .btn{padding:12px 16px;font-size:14.5px;flex:1 1 auto}
  .hero-strip-in{grid-template-columns:repeat(2,1fr)}
  .hero-strip-in>div{padding:22px 0 22px 20px}
  .hero-strip-in>div:nth-child(odd){padding-left:0}
  .about-in,.contact-in{grid-template-columns:1fr;gap:36px}
  .lb-in{grid-template-columns:1fr;max-height:88vh;overflow:auto}
  .lb-img{min-height:0;padding:16px}
  .lb-img img{max-height:40vh}
  .lb-tx{padding:24px}
}
@media(max-width:760px){
  .wrap{padding:0 20px}
  .quote,.catalog,.process,.terms,.about,.contact{padding:80px 0}
  .grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .term-grid{grid-template-columns:repeat(2,1fr);gap:10px}
  .f-row{grid-template-columns:1fr;gap:0}
  .facts{gap:24px}
  .qty-row input{width:130px;font-size:32px}
  .qc-price{font-size:34px}
  .ft-in{flex-direction:column;gap:20px}
  .wa{width:48px;height:48px;right:16px;bottom:96px}
  .friend{left:16px;bottom:96px;padding:10px 15px;font-size:13px}
}
@media(max-width:560px){
  .hero{padding-top:84px}
  .hero-in{gap:20px;padding-bottom:26px}
  .hero-media{height:228px;max-width:280px}
  .hero-sub{font-size:14.5px;margin-bottom:16px}
  .hero h1{font-size:clamp(30px,8.2vw,38px)}
  .hero-cta .btn{font-size:14px;padding:11px 14px}
  .brand-tx{display:none}
  .chips{width:100%;overflow-x:auto;flex-wrap:nowrap;padding-bottom:4px}
  .chips button{flex:0 0 auto}
  .search{flex:1 1 100%}
  .sort{width:100%}
  .hero-cta .btn{flex:1 1 100%}
  .term dd{font-size:20px}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}
  .rv{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ============================================================
   视频全屏按钮
   ============================================================ */
.vfull{
  position:absolute;top:10px;right:10px;z-index:8;
  width:34px;height:34px;border-radius:6px;
  background:rgba(10,10,11,.66);color:#fff;
  display:grid;place-items:center;
  backdrop-filter:blur(6px);
  transition:background .2s,transform .2s;
  padding:0;line-height:1;
}
.vfull:hover{background:rgba(10,10,11,.9);transform:scale(1.06)}
.vfull svg{display:block}
video:fullscreen,video:-webkit-full-screen{
  object-fit:contain;background:#000;width:100%;height:100%;
}

/* 仅中文界面显示（中文站 / 1688 国内批发站） */
[data-zh-only]{display:none}
html[lang="zh"] [data-zh-only]{display:inline-block}
.ft-langver{opacity:.75}
.ft-langver a{color:inherit;text-decoration:underline}