:root{
    --bg:#070a10;
    --surface:rgba(18,26,39,.72);
    --line:rgba(255,255,255,.09);
    --line-strong:rgba(255,255,255,.16);
    --text:#eaf0f7;
    --muted:#93a1b5;
    --accent:#19d3ff;
    --accent2:#2f6bff;
    --grad:linear-gradient(135deg,#19d3ff 0%,#2f6bff 100%);
    --radius:16px;
    --gut:28px;
    --maxw:1400px;
    --s-sec:56px;   /* 每个板块上下留白相等 → 板块间距统一为 112px */
    --s-head:40px;
    --cn:"Microsoft YaHei","微软雅黑","PingFang SC","Source Han Sans CN","Noto Sans SC";
  }
  *{box-sizing:border-box;margin:0;padding:0}
  html{scroll-behavior:smooth}
  body{font-family:'Inter',var(--cn),system-ui,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden;position:relative}
  body::before{content:"";position:fixed;inset:0;z-index:-2;pointer-events:none;
    background:
      radial-gradient(900px 640px at 86% -8%, rgba(47,107,255,.15), transparent 60%),
      radial-gradient(760px 700px at -10% 42%, rgba(25,211,255,.07), transparent 55%),
      radial-gradient(820px 680px at 112% 96%, rgba(47,107,255,.09), transparent 55%);}
  /* subtle dot-grid texture for tactile depth (sits above glow, below content) */
  body::after{content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;opacity:.55;
    background-image:radial-gradient(rgba(255,255,255,.022) 1px, transparent 1.4px);background-size:40px 40px;}
  h1,h2,h3,h4{font-family:'Sora',var(--cn),sans-serif;line-height:1.25;letter-spacing:0}
  a{color:inherit;text-decoration:none}
  .accent{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--gut)}
  .btn{display:inline-flex;align-items:center;gap:9px;padding:14px 26px;border-radius:12px;font-weight:700;font-size:15px;transition:.2s;cursor:pointer;border:none;white-space:nowrap}
  .btn-primary{background:var(--grad);color:#04101f;box-shadow:0 8px 30px rgba(25,211,255,.28)}
  .btn-primary:hover{transform:translateY(-2px)}
  .btn-ghost{background:rgba(255,255,255,.06);color:#fff;border:1px solid var(--line-strong)}
  .btn-wa{background:#25d366;color:#04240f}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:.12em;color:var(--accent)}

  .sec{padding:var(--s-sec) 0;position:relative}
  /* section rhythm: hairline separators + a whisper-soft alternating band */
  .sec + .sec{border-top:1px solid rgba(255,255,255,.05)}
  .sec:nth-of-type(even){background:linear-gradient(180deg,rgba(255,255,255,.016),rgba(255,255,255,.003) 55%,transparent)}
  .sec-head{max-width:680px;margin-bottom:var(--s-head)}
  .sec-head h2{font-size:40px;font-weight:800;margin:14px 0 14px;letter-spacing:-.01em}
  .sec-head p{color:var(--muted);font-size:16px;line-height:1.8}
  .divider{height:1px;background:linear-gradient(90deg,transparent,var(--line-strong),transparent)}
  .tag{position:fixed;top:14px;left:14px;z-index:200;background:rgba(25,211,255,.14);border:1px solid rgba(25,211,255,.4);color:var(--accent);font-size:12px;font-weight:700;padding:6px 12px;border-radius:30px;backdrop-filter:blur(6px)}

  /* NAV */
  header{position:absolute;top:0;left:0;right:0;z-index:100;background:transparent;border-bottom:1px solid rgba(255,255,255,.07)}
  .nav{display:flex;align-items:center;justify-content:space-between;height:74px;gap:24px}
  .logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:19px}
  .logo img{width:36px;height:36px;border-radius:9px}
  .logo b{color:#fff}.logo span{color:var(--accent)}
  .menu{display:flex;gap:24px;font-size:15px;font-weight:500;color:rgba(235,240,247,.85)}
  .menu a:hover{color:#fff}
  .nav-cta{display:flex;align-items:center;gap:12px}
  @media(max-width:1080px){.menu{display:none}}

  /* HERO（查询/找屏导向） */
  .hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:128px 0 70px}
  .hero-grid{display:grid;grid-template-columns:1.12fr 1fr;gap:56px;align-items:center;position:relative;z-index:2}
  .hero-content{max-width:640px}
  .btn-lg{padding:17px 32px;font-size:16px}
  .hero h1{font-size:clamp(38px,4.6vw,60px);font-weight:900;margin:18px 0 18px;line-height:1.12;letter-spacing:-.025em}
  .hero p.lead{font-size:16.5px;color:#c2cdda;max-width:560px;margin-bottom:26px;line-height:1.85}
  /* 找屏查询卡片 */
  .finder{background:var(--surface);border:1px solid var(--line-strong);border-radius:18px;padding:20px;backdrop-filter:blur(10px);box-shadow:0 26px 64px rgba(0,0,0,.42);max-width:580px}
  .finder .ft-title{display:flex;align-items:center;gap:9px;font-family:Sora,var(--cn),sans-serif;font-weight:800;font-size:16px;color:#fff;margin-bottom:14px}
  .finder .ft-title i{color:var(--accent);font-style:normal;font-size:19px}
  .finder-row{display:flex;gap:10px;flex-wrap:wrap}
  .finder select,.finder input{flex:1 1 150px;min-width:0;background:rgba(8,13,22,.72);border:1px solid var(--line-strong);border-radius:11px;color:var(--text);font-size:15px;padding:14px;font-family:inherit;outline:none}
  .finder select:focus,.finder input:focus{border-color:rgba(25,211,255,.55)}
  .finder input::placeholder{color:var(--muted)}
  .finder .btn{flex:0 0 auto;width:100%;justify-content:center;margin-top:10px}
  .finder-note{font-size:12.5px;color:var(--muted);margin-top:11px;line-height:1.6}
  .cred-row{display:flex;flex-wrap:wrap;gap:12px;max-width:600px;margin-top:24px}
  .cred{display:flex;align-items:center;gap:11px;background:rgba(12,18,28,.55);border:1px solid var(--line);border-radius:12px;padding:11px 14px;backdrop-filter:blur(8px)}
  .cred .ci{width:34px;height:34px;border-radius:9px;background:rgba(25,211,255,.12);display:flex;align-items:center;justify-content:center;color:var(--accent);font-size:16px;flex:none}
  .cred .ct{font-size:12.5px;color:var(--muted);line-height:1.35}
  .cred .ct b{display:block;color:#fff;font-size:13.5px;font-weight:700}
  /* 首屏右侧产品视觉 */
  .hero-visual{position:relative;justify-self:end;width:100%;max-width:520px;aspect-ratio:1/1;border-radius:22px;overflow:hidden;border:1px solid var(--line-strong);box-shadow:0 40px 90px rgba(0,0,0,.55);background:#0a0f17}
  .hero-visual img{width:100%;height:100%;object-fit:cover;object-position:center 48%;display:block;animation:laptopZoom 14s ease-in-out infinite alternate;will-change:transform}
  @keyframes laptopZoom{0%{transform:scale(1)}100%{transform:scale(1.045)}}
  @media (prefers-reduced-motion: reduce){.hero-visual img{animation:none}}
  .hero-visual .vbadge{position:absolute;left:14px;bottom:14px;z-index:3;background:rgba(7,10,16,.74);border:1px solid var(--line-strong);border-radius:12px;padding:9px 13px;font-size:12.5px;font-weight:700;color:#fff;backdrop-filter:blur(8px)}
  .hero-glow{position:absolute;z-index:0;top:6%;bottom:6%;right:-4%;width:min(560px,46%);border-radius:30px;pointer-events:none;
    background:radial-gradient(circle at 55% 45%,rgba(47,107,255,.42),transparent 62%);filter:blur(40px)}
  /* 首屏背景光晕 + 网格 */
  .hero::before{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;
    background:
      radial-gradient(760px 520px at 82% 30%, rgba(47,107,255,.26), transparent 62%),
      radial-gradient(620px 520px at 6% 78%, rgba(25,211,255,.14), transparent 60%),
      linear-gradient(120deg,#070d18,#0a1322 60%,#070b14)}
  .hero::after{content:"";position:absolute;inset:0;z-index:0;pointer-events:none;opacity:.34;
    background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
    background-size:54px 54px;
    -webkit-mask-image:radial-gradient(circle at 70% 44%,#000,transparent 72%);mask-image:radial-gradient(circle at 70% 44%,#000,transparent 72%)}

  /* 首屏整模块切面轮播（左文案 + 右图，整体拖动切换） */
  .hero-slider{position:relative;z-index:2;overflow:hidden;border-radius:20px;cursor:grab;touch-action:pan-y;user-select:none;-webkit-user-select:none}
  .hero-slider.dragging{cursor:grabbing}
  .hs-track{display:flex;will-change:transform;transition:transform .6s cubic-bezier(.22,.61,.36,1)}
  .hero-slider.dragging .hs-track{transition:none}
  .hs-slide{flex:0 0 100%;min-width:0}
  .hs-grid{display:grid;grid-template-columns:1.12fr 1fr;gap:56px;align-items:center;min-height:460px;padding:4px 2px}
  .hs-content{max-width:640px}
  .hs-content .eyebrow{margin-bottom:4px}
  .hs-content h1,.hs-content h2{font-family:'Sora',var(--cn),sans-serif;font-size:clamp(34px,4.2vw,54px);font-weight:900;margin:16px 0 18px;line-height:1.14;letter-spacing:-.025em}
  .hs-content p.lead{font-size:16.5px;color:#c2cdda;max-width:560px;line-height:1.85;margin:0}
  .hs-visual{position:relative;justify-self:end;width:100%;max-width:560px;aspect-ratio:16/10;border-radius:22px;overflow:hidden;
    border:1px solid var(--line-strong);box-shadow:0 40px 90px rgba(0,0,0,.55),0 0 0 1px rgba(25,211,255,.12);background:#0a0f17}
  .hs-visual img{width:100%;height:100%;object-fit:contain;object-position:center;display:block;pointer-events:none;-webkit-user-drag:none}
  .hs-visual .vbadge{position:absolute;left:14px;bottom:14px;z-index:3;background:rgba(7,10,16,.74);border:1px solid var(--line-strong);border-radius:12px;padding:9px 13px;font-size:12.5px;font-weight:700;color:#fff;backdrop-filter:blur(8px)}
  /* 占位“点亮屏”幻灯（暂无实拍的切面） */
  .hs-fill{position:absolute;inset:0;
    background:
      radial-gradient(120% 95% at 26% 16%, rgba(25,211,255,.30), transparent 56%),
      radial-gradient(130% 100% at 82% 92%, rgba(47,107,255,.42), transparent 60%),
      linear-gradient(135deg,#0b1626,#0a1f3a 55%,#08101d)}
  .hs-fill::before{content:"";position:absolute;inset:0;opacity:.4;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px);background-size:100% 6px}
  .hs-fill.b{filter:hue-rotate(150deg) saturate(1.05)}
  /* 圆点指示（左下，对齐文案） */
  .hs-dots{position:absolute;left:4px;bottom:8px;z-index:6;display:flex;gap:12px;align-items:center}
  .hs-dots button{position:relative;width:11px;height:11px;padding:0;border:none;border-radius:50%;background:rgba(255,255,255,.34);cursor:pointer;transition:.25s}
  .hs-dots button::after{content:"";position:absolute;inset:-7px;border-radius:50%}
  .hs-dots button.on{width:28px;border-radius:6px;background:var(--grad)}
  /* 左右切换：贴模块左右两侧边缘、垂直居中 */
  .hs-arrow{position:absolute;top:50%;transform:translateY(-50%);z-index:7;width:48px;height:48px;border-radius:50%;
    border:1px solid var(--line-strong);background:rgba(7,10,16,.55);color:#fff;font-size:26px;line-height:1;
    display:flex;align-items:center;justify-content:center;cursor:pointer;backdrop-filter:blur(6px);transition:background .2s,border-color .2s,transform .2s}
  .hs-arrow:hover{background:rgba(25,211,255,.24);border-color:rgba(25,211,255,.6);transform:translateY(-50%) scale(1.08)}
  .hs-prev{left:12px}
  .hs-next{right:12px}
  /* 计数：右下角 */
  .hs-count{position:absolute;right:8px;bottom:8px;z-index:6;font-family:Sora,var(--cn),sans-serif;font-size:14px;font-weight:700;color:#9fb0c4}
  .hs-count b{color:#fff;font-size:17px}
  .hs-count i{font-style:normal;margin:0 2px;color:var(--muted)}
  /* 拖动提示 */
  .hs-hint{position:absolute;right:6px;top:2px;z-index:5;font-size:12px;color:rgba(255,255,255,.72);background:rgba(7,10,16,.5);
    border:1px solid var(--line);border-radius:20px;padding:5px 12px;backdrop-filter:blur(6px);transition:opacity .45s}
  .hs-hint.hide{opacity:0;pointer-events:none}

  /* 常驻搜索条（不随切面滑动） */
  .hero-finderbar{position:relative;z-index:2;margin-top:28px;padding-top:24px;border-top:1px solid var(--line)}
  .hero-finderbar .finder{max-width:none;margin:0}
  /* 质量保障：老化实录——视频 + 数据合并为一个统一面板（去掉零散卡片） */
  .qa-proof{display:grid;grid-template-columns:300px 1fr;margin:14px 0 24px;
    border:1px solid var(--line-strong);border-radius:16px;overflow:hidden;background:var(--surface);backdrop-filter:blur(8px)}
  .qa-proof .aging-player{max-width:none;width:100%;height:auto;aspect-ratio:auto;border:0;border-radius:0;box-shadow:none;min-height:300px}
  .qa-proof .aging-video{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
  .qa-info{display:flex;flex-direction:column;justify-content:center;padding:24px 32px}
  .qa-info h4{font-size:16.5px;color:#fff;margin-bottom:5px}
  .qa-info .sub{font-size:13px;color:var(--muted);margin-bottom:14px;line-height:1.6}
  .qa-list{display:grid;grid-template-columns:1fr 1fr;column-gap:34px;margin-bottom:20px}
  .qa-item{display:flex;align-items:baseline;gap:10px;padding:13px 0;border-bottom:1px solid var(--line)}
  .qa-item b{font-family:Sora,var(--cn),sans-serif;font-size:23px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1;white-space:nowrap}
  .qa-item b i{font-style:normal;font-size:12.5px;font-weight:700;margin-left:2px}
  .qa-item span{font-size:12px;color:var(--muted);line-height:1.4}
  .qa-info > .btn{align-self:flex-start}
  @media(max-width:760px){
    .qa-proof{grid-template-columns:1fr}
    .qa-proof .aging-player{aspect-ratio:16/10;min-height:0}
    .qa-list{column-gap:22px}
  }
  @media(max-width:900px){
    .hs-grid{grid-template-columns:1fr;min-height:0;gap:26px}
    .hs-visual{justify-self:stretch;max-width:none;aspect-ratio:16/10;order:-1}
    .hs-arrow{width:40px;height:40px;font-size:22px}
    .hs-prev{left:6px}.hs-next{right:6px}
    .hs-count{display:none}
  }

  /* 信任条 */
  .trustbar{border-bottom:1px solid var(--line);background:rgba(9,13,20,.5);backdrop-filter:blur(8px)}
  .trustbar .wrap{display:flex;flex-wrap:wrap;gap:16px 30px;justify-content:space-between;padding-top:18px;padding-bottom:18px}
  .tb-item{display:flex;align-items:center;gap:10px;font-size:14px;color:#cfd9e6;font-weight:600}
  .tb-item .ti{color:var(--accent);font-size:18px;flex:none}
  @media(max-width:900px){.hero-grid{grid-template-columns:1fr}.hero-visual{justify-self:stretch;max-width:none;aspect-ratio:16/11;order:-1}}

  /* STRENGTH */
  .strength-grid{display:grid;grid-template-columns:1fr 540px;gap:56px;align-items:stretch}
  .strength-grid .fact-photo{aspect-ratio:auto;min-height:0;height:100%}
  .strength-grid .lead-txt{color:var(--muted);font-size:16px;line-height:1.85}
  .fact-photo{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line-strong);aspect-ratio:5/4;
    background:linear-gradient(180deg,rgba(7,10,16,.04),rgba(7,10,16,.4)),url('stock-range.jpg');background-size:cover;background-position:center;
    box-shadow:0 30px 70px rgba(0,0,0,.5),0 0 0 1px rgba(25,211,255,.16)}
  .fact-photo::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;mix-blend-mode:screen;
    background:radial-gradient(420px 300px at 82% 10%,rgba(25,211,255,.30),transparent 60%),radial-gradient(360px 300px at 8% 96%,rgba(47,107,255,.26),transparent 60%)}
  .fact-photo .pn{position:absolute;left:14px;bottom:14px;z-index:3;font-size:12px;color:rgba(255,255,255,.75);background:rgba(0,0,0,.45);padding:5px 11px;border-radius:20px;border:1px solid var(--line)}
  .fact-photo .badge2{position:absolute;left:14px;top:14px;z-index:3;background:rgba(7,10,16,.7);border:1px solid var(--line-strong);border-radius:12px;padding:10px 14px;backdrop-filter:blur(8px)}
  .fact-photo .badge2 .v{font-family:Sora,var(--cn),sans-serif;font-weight:800;font-size:15.5px;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
  .fact-photo .badge2 .l{font-size:11.5px;color:var(--muted);font-weight:600;margin-top:2px}
  .kpi{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:24px 0 0}
  .kpi .k{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:20px;backdrop-filter:blur(8px)}
  .kpi .k .n{font-family:Sora;font-size:30px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
  .kpi .k .n .u{font-size:15px;font-weight:700;margin-left:2px}
  .kpi .k .l{color:var(--muted);font-size:13.5px;margin-top:4px}
  .certs{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}
  .cert-badge{display:inline-flex;align-items:center;gap:7px;font-size:13.5px;font-weight:700;color:#dfe7f0;background:rgba(255,255,255,.05);border:1px solid var(--line-strong);padding:9px 15px;border-radius:30px}
  .cert-badge i{color:var(--accent);font-style:normal}

  /* MATRIX */
  .matrix-wrap{border:1px solid var(--line-strong);border-radius:var(--radius);overflow:hidden;background:var(--surface);backdrop-filter:blur(8px)}
  table.matrix{width:100%;border-collapse:collapse;font-size:14.5px}
  table.matrix th,table.matrix td{padding:18px 16px;text-align:center;border-bottom:1px solid var(--line)}
  table.matrix tbody tr:last-child td{border-bottom:none}
  table.matrix thead th{background:rgba(8,13,22,.85);color:#cfd9e6;font-family:var(--cn);font-weight:700;font-size:13px;letter-spacing:.04em}
  table.matrix thead th:first-child,table.matrix td.size{text-align:left}
  table.matrix tbody tr:nth-child(even){background:rgba(255,255,255,.022)}
  table.matrix tbody tr:hover{background:rgba(25,211,255,.06)}
  table.matrix td.size{font-weight:700;color:#fff;font-size:15.5px}
  table.matrix td.size small{display:block;color:var(--muted);font-weight:500;font-size:12.5px;margin-top:2px}
  .yes{color:var(--accent);font-weight:800;font-size:16px}
  .opt{color:var(--muted);font-size:13px}
  .mtag{display:inline-block;font-size:12px;font-weight:700;background:rgba(25,211,255,.1);color:var(--accent);padding:4px 9px;border-radius:14px;margin:2px}
  .matrix-foot{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;margin-top:24px}
  .matrix-foot p{color:var(--muted);font-size:14.5px;max-width:660px;line-height:1.7}

  /* QC */
  .qc-steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-bottom:26px}
  .qc-step{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:22px 18px;backdrop-filter:blur(8px)}
  .qc-step .si{width:38px;height:38px;border-radius:10px;background:rgba(25,211,255,.12);color:var(--accent);display:flex;align-items:center;justify-content:center;font-family:Sora;font-weight:800;margin-bottom:14px}
  .qc-step h4{font-size:15.5px;color:#fff;margin-bottom:6px}
  .qc-step p{font-size:13px;color:var(--muted);line-height:1.65}
  .pack-duo{display:grid;grid-template-columns:1fr 1fr;gap:18px}
  .pack-card{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/7;min-height:170px;}
  .pack-card.p1{background-image:linear-gradient(180deg,rgba(7,10,16,.05),rgba(7,10,16,.62)),url('ship-pallets.jpg');background-size:cover;background-position:center}
  .pack-card.p2{background-image:linear-gradient(180deg,rgba(7,10,16,.05),rgba(7,10,16,.62)),url('qc-check.jpg');background-size:cover;background-position:center}
  .pack-card .pc{position:absolute;left:20px;bottom:18px;right:20px}
  .pack-card .pc h4{font-size:16.5px;color:#fff;margin-bottom:5px}
  .pack-card .pc p{font-size:13.5px;color:#c2cdda;line-height:1.65}
  .pack-card .pn{position:absolute;right:12px;top:12px;font-size:11.5px;color:rgba(255,255,255,.65);background:rgba(0,0,0,.45);padding:4px 9px;border-radius:14px;border:1px solid var(--line)}

  /* PRODUCTS */
  .prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
  .prod{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:var(--surface);transition:.25s;backdrop-filter:blur(8px)}
  .prod:hover{transform:translateY(-4px);border-color:rgba(25,211,255,.4)}
  .prod .imgwrap{height:200px;position:relative;background:#0a0f17;overflow:hidden}
  .vscr{position:absolute;inset:0;transition:transform .4s ease;
    background:
      radial-gradient(120% 95% at 28% 18%, rgba(25,211,255,.28), transparent 56%),
      radial-gradient(130% 100% at 82% 92%, rgba(47,107,255,.40), transparent 60%),
      linear-gradient(135deg,#0b1626,#0a1f3a 55%,#08101d)}
  .prod:hover .vscr{transform:scale(1.05)}
  .vscr.b{filter:hue-rotate(40deg) saturate(1.05)}
  .vscr.c{filter:hue-rotate(-48deg) saturate(1.05)}
  .vscr.d{filter:hue-rotate(150deg) saturate(1.04)}
  /* real product photo: show full panel, true color, no scanline/zoom-crop */
  .vscr:has(img){filter:none;transform:none}
  .vscr:has(img)::before{display:none}
  .prod:hover .vscr:has(img){transform:none}
  .prod .imgwrap:has(img){height:auto;aspect-ratio:16/10}
  .vscr img{object-fit:contain !important}
  /* 模拟点亮屏的细微扫描纹理,远离“假跑车图”观感 */
  .vscr::before{content:"";position:absolute;inset:0;opacity:.4;pointer-events:none;
    background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px);background-size:100% 5px}
  .vscr::after{content:"";position:absolute;inset:0;box-shadow:inset 0 0 60px rgba(0,0,0,.45),inset 0 2px 14px rgba(255,255,255,.10);pointer-events:none}
  .vscr .note{position:absolute;left:14px;top:13px;z-index:2;font-size:11px;color:rgba(255,255,255,.72);background:rgba(0,0,0,.42);border:1px solid var(--line);padding:3px 9px;border-radius:12px;backdrop-filter:blur(4px)}
  .vscr .sz{position:absolute;left:18px;bottom:14px;z-index:2;font-family:Sora,var(--cn),sans-serif;font-weight:800;color:#fff;font-size:25px;text-shadow:0 2px 14px rgba(0,0,0,.6)}
  .vscr .hz{position:absolute;right:14px;top:14px;z-index:2;font-size:11.5px;font-weight:700;color:#04101f;background:var(--accent);padding:4px 9px;border-radius:14px}
  .prod .info{padding:18px 20px}
  .prod .info h3{font-size:16px;color:#fff;margin-bottom:6px;letter-spacing:.01em}
  .prod .info .specline{font-size:13px;color:var(--muted);line-height:1.6}
  .prod .info .spectab{margin-top:12px;border-top:1px solid var(--line)}
  .prod .info .spectab .row{display:flex;justify-content:space-between;gap:12px;padding:7px 0;border-bottom:1px solid var(--line)}
  .prod .info .spectab .row:last-child{border-bottom:none}
  .prod .info .spectab .lbl{font-size:12px;color:var(--muted);white-space:nowrap}
  .prod .info .spectab .val{font-size:12.5px;font-weight:600;color:#dfe7f0;text-align:right}
  .prod .info .go{margin-top:14px;font-size:13.5px;font-weight:700;color:var(--accent)}

  /* CTA */
  .cta{background:radial-gradient(700px 360px at 50% 0%,rgba(47,107,255,.3),transparent 70%),linear-gradient(180deg,rgba(12,19,34,.85),rgba(7,10,16,.85));border:1px solid var(--line-strong);border-radius:24px;padding:62px 40px;text-align:center;position:relative;overflow:hidden;backdrop-filter:blur(10px)}
  .cta h2{font-size:34px;font-weight:800;margin-bottom:14px}
  .cta p{color:var(--muted);font-size:16px;max-width:580px;margin:0 auto 28px;line-height:1.8}
  .cta-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

  /* FOOTER */
  footer{border-top:1px solid var(--line);background:rgba(9,13,20,.7);padding:0 0 30px;margin-top:24px;backdrop-filter:blur(8px)}
  .foot-cta{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;padding:56px 0;border-bottom:1px solid var(--line)}
  .foot-cta .ft h3{font-size:23px;color:#fff;font-weight:800;font-family:Sora,var(--cn),sans-serif}
  .foot-cta .ft p{color:var(--muted);font-size:14.5px;margin-top:5px}
  .foot-cta .fb{display:flex;gap:12px;flex-wrap:wrap}
  .foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:44px;padding-top:48px}
  .foot-grid h4{font-size:14px;letter-spacing:.06em;color:#fff;margin-bottom:16px}
  .foot-grid a{display:block;color:var(--muted);font-size:14.5px;margin-bottom:11px}
  .foot-grid a:hover{color:var(--accent)}
  .foot-social-icons{display:flex;gap:12px;margin-top:18px}
  .foot-social-icons a{width:42px;height:42px;border-radius:12px;display:inline-flex;align-items:center;justify-content:center;background:rgba(255,255,255,.05);border:1px solid var(--line);color:var(--muted);margin:0;transition:.2s}
  .foot-social-icons a:hover{color:#fff;background:rgba(255,255,255,.12);transform:translateY(-2px)}
  .foot-social-icons svg{width:20px;height:20px;display:block}
  .foot-bottom{border-top:1px solid var(--line);margin-top:36px;padding-top:24px;color:var(--muted);font-size:13.5px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
  .foot-bottom a{color:var(--muted);text-decoration:underline;text-underline-offset:3px}
  .foot-bottom a:hover{color:var(--accent)}
  .wa-float{position:fixed;right:26px;bottom:26px;z-index:90;width:58px;height:58px;border-radius:50%;background:#25d366;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 30px rgba(37,211,102,.5);font-size:24px}

  @media(max-width:1200px){.prod-grid{grid-template-columns:repeat(2,1fr)}}
  @media(max-width:900px){
    .strength-grid,.pack-duo,.aging-grid{grid-template-columns:1fr}.strength-grid .fact-photo{aspect-ratio:5/4;min-height:0}
    .qc-steps{grid-template-columns:repeat(2,1fr)}
    .prod-grid{grid-template-columns:1fr 1fr}
  }
  @media(max-width:540px){.prod-grid{grid-template-columns:1fr}}

  /* ===== 老化测试视频（竖屏） ===== */
  /* 标题置顶 + 对称三栏：左特点卡 · 中视频 · 右数据卡 */
  .aging-grid{display:grid;grid-template-columns:1fr 360px 1fr;gap:48px;align-items:center}
  .aging-points{display:flex;flex-direction:column;gap:14px}
  .aging-stats{display:flex;flex-direction:column;gap:14px}
  .aging-stat{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:18px 20px;backdrop-filter:blur(8px)}
  .aging-stat .sn{font-family:Sora,var(--cn),sans-serif;font-size:24px;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1.1}
  .aging-stat .sn .u{font-size:14px;font-weight:700;margin-left:2px}
  .aging-stat .sl{color:var(--muted);font-size:13px;margin-top:5px;line-height:1.5}
  @media(max-width:1080px){
    .aging-grid{grid-template-columns:1fr;gap:30px}
    .aging-player{order:-1}
    .aging-points,.aging-stats{flex-direction:row;flex-wrap:wrap}
    .aging-pt,.aging-stat{flex:1 1 200px}
  }
  .aging-cta{margin-top:24px}
  .aging-pt{display:flex;gap:14px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:16px 18px;backdrop-filter:blur(8px)}
  .aging-pt .pi{width:38px;height:38px;border-radius:10px;background:rgba(25,211,255,.12);color:var(--accent);display:flex;align-items:center;justify-content:center;font-size:18px;flex:none}
  .aging-pt h4{font-size:15.5px;color:#fff;margin-bottom:3px}
  .aging-pt p{font-size:13px;color:var(--muted);line-height:1.5}
  .aging-player{position:relative;width:100%;max-width:360px;aspect-ratio:9/16;border-radius:22px;overflow:hidden;border:1px solid var(--line-strong);background:#0a0f17;box-shadow:0 40px 90px rgba(0,0,0,.55),0 0 0 1px rgba(25,211,255,.14);margin:0 auto}
  .aging-video{width:100%;height:100%;object-fit:cover;display:block}
  .play-btn{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:3;width:84px;height:84px;border-radius:50%;border:none;cursor:pointer;
    background:var(--grad);color:#04101f;font-size:28px;display:flex;align-items:center;justify-content:center;box-shadow:0 12px 44px rgba(25,211,255,.5);transition:.2s}
  .play-btn:hover{transform:translate(-50%,-50%) scale(1.08)}
  .play-btn::before{content:"";position:absolute;inset:-14px;border-radius:50%;border:1px solid rgba(25,211,255,.45);animation:vpulse 2.2s ease-out infinite}
  @keyframes vpulse{0%{transform:scale(1);opacity:.75}100%{transform:scale(1.55);opacity:0}}
  @media (prefers-reduced-motion: reduce){.play-btn::before{animation:none}}
  .aging-badge{position:absolute;left:14px;top:14px;z-index:3;background:rgba(7,10,16,.72);border:1px solid var(--line-strong);border-radius:12px;padding:8px 13px;font-size:12.5px;font-weight:700;color:#fff;backdrop-filter:blur(8px)}
  .aging-badge i{color:#19d3ff;font-style:normal}

  /* ===== 悬停：渐变描边 + 浮起发光 ===== */
  .kpi .k,.qc-step,.prod,.pack-card{position:relative;transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease}
  .kpi .k::before,.qc-step::before,.prod::before,.pack-card::before{
    content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;
    background:var(--grad);
    -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
            mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
    -webkit-mask-composite:xor;mask-composite:exclude;
    opacity:0;transition:opacity .28s ease;pointer-events:none;z-index:6}
  .kpi .k:hover,.qc-step:hover,.prod:hover,.pack-card:hover{
    transform:translateY(-4px);
    box-shadow:0 18px 40px rgba(0,0,0,.45),0 12px 44px rgba(25,211,255,.18)}
  .kpi .k:hover::before,.qc-step:hover::before,.prod:hover::before,.pack-card:hover::before{opacity:1}
  /* 资质徽章 / 资质卡 悬停轻微高亮 */
  .cert-badge,.cred{transition:border-color .25s ease,background .25s ease,transform .2s ease}
  .cert-badge:hover,.cred:hover{border-color:rgba(25,211,255,.45);transform:translateY(-2px)}

  /* ===== 客户与背书 ===== */
  .logos{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;margin-bottom:34px}
  .logo-box{height:74px;border:1px solid var(--line);border-radius:12px;background:rgba(255,255,255,.03);display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:12px;font-weight:600;text-align:center;padding:8px;backdrop-filter:blur(6px);transition:.2s}
  .logo-box:hover{border-color:rgba(25,211,255,.35);color:#cfd9e6}
  @media(max-width:900px){.logos{grid-template-columns:repeat(3,1fr)}}
  @media(max-width:540px){.logos{grid-template-columns:repeat(2,1fr)}}
  .tcards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .tcard{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:24px;backdrop-filter:blur(8px);position:relative}
  .tcard .stars{color:#ffc24b;font-size:14px;letter-spacing:2px;margin-bottom:12px}
  .tcard q{display:block;color:#cdd7e4;font-size:14.5px;line-height:1.75;margin-bottom:18px;quotes:none}
  .tcard q::before,.tcard q::after{content:""}
  .tcard .who{display:flex;align-items:center;gap:11px}
  .tcard .av{width:40px;height:40px;border-radius:50%;background:rgba(25,211,255,.14);color:var(--accent);display:flex;align-items:center;justify-content:center;font-weight:700;flex:none}
  .tcard .who b{display:block;color:#fff;font-size:14px}
  .tcard .who span{color:var(--muted);font-size:12.5px}
  .tcard .ph-note{position:absolute;right:12px;top:12px;font-size:11px;color:var(--muted);background:rgba(0,0,0,.35);border:1px solid var(--line);padding:3px 8px;border-radius:12px}
  @media(max-width:900px){.tcards{grid-template-columns:1fr}}

  /* ===== 滚动进场动画（轻微上浮淡入，只播一次） ===== */
  .reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .65s cubic-bezier(.22,.61,.36,1);will-change:opacity,transform}
  .reveal.in{opacity:1;transform:none}
  @media (prefers-reduced-motion: reduce){.reveal,.reveal.in{opacity:1!important;transform:none!important;transition:none!important}}