:root{
    --bg:#f3f6fa; --bg2:#eef3f9;
    --panel:#ffffff; --panel2:#f7fafd;
    --line:#dfe7f1; --line2:#c9d7e7;
    --txt:#16202e; --sub:#3d4d63; --dim:#637286;
    --acc:#e2701a; --acc2:#b9540b; --acc-dim:rgba(226,112,26,.10);
    --cyan:#1b7fa6; --ok:#0d8a5c;
    --mono:"Bahnschrift","DIN Alternate","Franklin Gothic Medium","Segoe UI",system-ui,-apple-system,"Microsoft YaHei",sans-serif;
  }
  *{margin:0;padding:0;box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    font-family:var(--mono);
    color:var(--txt);
    min-height:100vh;
    background:
      radial-gradient(1100px 560px at 88% -12%, rgba(255,138,61,.10), transparent 60%),
      radial-gradient(900px 520px at -8% 22%, rgba(76,201,240,.07), transparent 58%),
      linear-gradient(180deg, #0a1019 0%, #060a11 100%);
    background-attachment:fixed;
    -webkit-font-smoothing:antialiased;
    line-height:1.5;
  }
  body::before{
    content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
    background-image:
      linear-gradient(rgba(255,255,255,.022) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,.022) 1px, transparent 1px);
    background-size:46px 46px;
    -webkit-mask-image:radial-gradient(ellipse 90% 70% at 50% 26%, #000 20%, transparent 78%);
    mask-image:radial-gradient(ellipse 90% 70% at 50% 26%, #000 20%, transparent 78%);
  }
  .page{position:relative;z-index:1;max-width:1180px;margin:0 auto;padding:26px 22px 54px}

  /* ---------- 通用 ---------- */
  .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s cubic-bezier(.2,.7,.2,1),transform .7s cubic-bezier(.2,.7,.2,1)}
  .reveal.in{opacity:1;transform:none}
  .section{margin-top:26px}
  .sec-head{display:flex;align-items:center;gap:11px;margin-bottom:14px}
  .sec-head .idx{font-size:11px;letter-spacing:2px;color:var(--acc);font-weight:700;padding:2px 7px;border:1px solid rgba(255,138,61,.35);border-radius:5px;background:rgba(255,138,61,.07)}
  .sec-head h2{font-size:18px;font-weight:800;letter-spacing:1px;white-space:nowrap}
  .sec-head .line{flex:1;height:1px;background:linear-gradient(90deg,var(--line2),transparent)}
  .sec-head .tag{font-size:10.5px;color:var(--dim);letter-spacing:.8px;white-space:nowrap}
  .muted{color:var(--dim)}
  .acc{color:var(--acc2)}

  /* ---------- 顶部抬头 ---------- */
  .hero{
    position:relative;overflow:hidden;border:1px solid var(--line);border-radius:18px;
    background:linear-gradient(155deg,#111b2a 0%,#0b121c 58%,#0a1018 100%);
    box-shadow:0 18px 46px rgba(0,0,0,.45), inset 0 1px 0 rgba(255,255,255,.05);
    padding:24px 28px 22px;
  }
  .hero::before{
    content:"";position:absolute;top:0;left:0;right:0;height:3px;opacity:.9;
    background:repeating-linear-gradient(45deg,var(--acc) 0 10px,#171208 10px 20px);
  }
  .hero::after{
    content:"";position:absolute;right:-120px;top:-140px;width:420px;height:420px;border-radius:50%;
    background:radial-gradient(circle, rgba(255,138,61,.14), transparent 65%);pointer-events:none;
  }
  .brand-row{position:relative;z-index:1;display:flex;justify-content:space-between;align-items:flex-start;gap:24px;padding-bottom:18px;border-bottom:1px solid #172334}
  .brand{display:flex;align-items:center;gap:12px}
  .logo{
    width:46px;height:46px;border-radius:11px;flex:none;display:flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,#ff9d4d,#c2500f);
    box-shadow:0 6px 18px rgba(255,122,26,.35), inset 0 1px 0 rgba(255,255,255,.28);
  }
  .logo svg{width:25px;height:25px}
  .brand .cn{font-size:17px;font-weight:800;letter-spacing:.6px}
  .brand .en{font-size:9.5px;color:var(--dim);letter-spacing:1.6px;margin-top:3px}
  .contact-mini{display:flex;flex-direction:column;align-items:flex-end;gap:4px;font-size:10.5px;color:var(--dim);letter-spacing:.4px}
  .contact-mini span{display:inline-flex;align-items:center;gap:5px}
  .contact-mini span::before{content:"";width:4px;height:4px;border-radius:50%;background:rgba(255,138,61,.7)}

  .hero-body{position:relative;z-index:1;display:grid;grid-template-columns:1.45fr .85fr;gap:24px;padding-top:20px}
  .eyebrow{display:flex;align-items:center;gap:8px;font-size:10.5px;letter-spacing:2px;color:var(--acc2);font-weight:700}
  .eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--acc);box-shadow:0 0 10px rgba(255,138,61,.9);animation:pulse 2.2s ease-in-out infinite}
  .hero h1{font-size:34px;line-height:1.2;letter-spacing:1px;margin-top:9px;font-weight:800}
  .hero h1 em{font-style:normal;background:linear-gradient(90deg,var(--acc),var(--acc2));-webkit-background-clip:text;background-clip:text;color:transparent}
  .hero .lead{font-size:12.5px;color:var(--sub);margin-top:10px;max-width:560px;line-height:1.8}
  .chips{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
  .chip{font-size:10px;color:var(--sub);border:1px solid var(--line2);background:rgba(255,255,255,.025);border-radius:5px;padding:4px 9px;letter-spacing:.5px}
  .chip b{color:var(--acc2);font-weight:700}

  .doc-card{
    background:linear-gradient(165deg,rgba(20,31,47,.92),rgba(12,19,29,.94));
    border:1px solid var(--line2);border-radius:12px;padding:14px 15px;
    box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
  }
  .doc-card .to{font-size:10.5px;color:var(--dim);letter-spacing:1px;padding-bottom:9px;margin-bottom:8px;border-bottom:1px dashed #22324a}
  .doc-row{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:5px 0;font-size:11.5px}
  .doc-row span{color:var(--dim);white-space:nowrap}
  .doc-row b{color:var(--txt);font-weight:700;text-align:right;font-variant-numeric:tabular-nums}
  .doc-row b.hl{color:var(--acc2)}

  .kpi-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:14px}
  .kpi{
    position:relative;overflow:hidden;border:1px solid var(--line);border-radius:12px;padding:13px 15px;
    background:linear-gradient(160deg,rgba(17,27,42,.9),rgba(10,16,25,.92));
    box-shadow:inset 0 1px 0 rgba(255,255,255,.035);
    transition:transform .25s ease,border-color .25s ease;
  }
  .kpi:hover{transform:translateY(-3px);border-color:#354a68}
  .kpi .k{font-size:10.5px;color:var(--dim);letter-spacing:1px}
  .kpi .v{font-size:22px;font-weight:800;margin-top:5px;font-variant-numeric:tabular-nums;letter-spacing:.3px}
  .kpi .v small{font-size:11px;font-weight:700;color:var(--sub);margin-left:3px;letter-spacing:.5px}
  .kpi .v.gold{background:linear-gradient(180deg,#ffe0bb,var(--acc2));-webkit-background-clip:text;background-clip:text;color:transparent}
  .kpi::after{content:"";position:absolute;right:0;top:0;width:42px;height:42px;background:radial-gradient(circle at 100% 0,rgba(255,138,61,.16),transparent 70%)}

  /* ---------- 三维模型 ---------- */
  .model-grid{display:grid;grid-template-columns:1.62fr .88fr;gap:16px;align-items:stretch}
  .model-panel{
    border:1px solid var(--line);border-radius:16px;padding:10px;
    background:linear-gradient(160deg,#111b2a,#0a1018);
    box-shadow:0 14px 36px rgba(0,0,0,.4), inset 0 1px 0 rgba(255,255,255,.04);
  }
  .model-frame{position:relative;border-radius:11px;overflow:hidden;background:#fff;aspect-ratio:16/9}
  .model-frame iframe{display:block;width:100%;height:100%;border:0}
  .model-frame:fullscreen{aspect-ratio:auto;width:100vw;height:100vh;border-radius:0;background:#fff}
  .model-frame:fullscreen iframe{width:100%;height:100%}
  .model-frame .scan{
    position:absolute;left:0;right:0;top:-2px;height:2px;pointer-events:none;opacity:.55;
    background:linear-gradient(90deg,transparent,rgba(255,138,61,.95),transparent);
    animation:scan 4.6s linear infinite;
  }
  .model-loading{
    position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;
    background:#f3f6fa;color:#7b8aa0;font-size:12px;letter-spacing:1px;transition:opacity .45s ease;
  }
  .model-loading.hide{opacity:0;pointer-events:none}
  .model-loading .sub-hint{font-size:10px;color:#6b7c91;letter-spacing:.5px}
  .spinner{width:26px;height:26px;border-radius:50%;border:2px solid #dbe3ec;border-top-color:#ff8a3d;animation:spin .9s linear infinite}
  .model-tools{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:10px 4px 2px;font-size:10.5px;color:var(--dim);letter-spacing:.4px}
  .model-tools .tips{display:flex;align-items:center;gap:6px}
  .model-tools .tips::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--ok);box-shadow:0 0 8px rgba(61,220,151,.8)}
  .btn-fs{
    font-family:var(--mono);font-size:10.5px;letter-spacing:.8px;cursor:pointer;
    color:var(--acc2);background:rgba(255,138,61,.08);border:1px solid rgba(255,138,61,.38);
    border-radius:6px;padding:5px 11px;transition:background .2s,border-color .2s,box-shadow .2s;
  }
  .btn-fs:hover{background:rgba(255,138,61,.15);border-color:var(--acc);box-shadow:0 0 12px rgba(255,138,61,.22)}

  .spec-side{
    display:flex;flex-direction:column;border:1px solid var(--line);border-radius:16px;padding:16px 16px 14px;
    background:linear-gradient(165deg,#101a29,#0b121c);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
  }
  .spec-side h3{font-size:12.5px;letter-spacing:1.4px;color:var(--sub);font-weight:700;display:flex;align-items:center;gap:7px;margin-bottom:10px}
  .spec-side h3::before{content:"";width:3px;height:13px;border-radius:2px;background:linear-gradient(180deg,var(--acc),var(--acc2));box-shadow:0 0 8px rgba(255,138,61,.5)}
  .si{display:flex;justify-content:space-between;align-items:baseline;gap:10px;padding:7.5px 0;border-bottom:1px dashed #1b2a3e;font-size:12px}
  .si:last-of-type{border-bottom:none}
  .si span{color:var(--dim)}
  .si b{color:var(--txt);font-weight:700;font-variant-numeric:tabular-nums}
  .si b .u{font-size:9.5px;color:var(--dim);font-weight:400;margin-left:2px}
  .badge-row{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto;padding-top:12px}
  .badge{font-size:9.5px;color:var(--acc2);border:1px solid rgba(255,138,61,.32);background:rgba(255,138,61,.07);border-radius:4px;padding:3px 7px;letter-spacing:.4px}
  .badge.cy{color:var(--cyan);border-color:rgba(76,201,240,.3);background:rgba(76,201,240,.07)}
  .spec-note{font-size:10px;color:var(--dim);line-height:1.7;margin-top:8px}

  /* ---------- 表格 ---------- */
  .table-wrap{
    overflow-x:auto;border:1px solid var(--line);border-radius:14px;
    background:linear-gradient(165deg,#0f1825,#0a111a);
    box-shadow:0 10px 26px rgba(0,0,0,.3), inset 0 1px 0 rgba(255,255,255,.03);
  }
  table{width:100%;border-collapse:collapse;font-size:12.5px;min-width:680px}
  thead th{
    background:#0c1522;color:var(--dim);font-weight:700;font-size:10.5px;letter-spacing:1px;
    text-align:left;padding:11px 13px;border-bottom:1px solid #1e2d42;white-space:nowrap;
  }
  tbody td{padding:11px 13px;border-bottom:1px solid #141f2e;color:var(--sub);vertical-align:top;line-height:1.6}
  tbody tr:last-child td{border-bottom:none}
  tbody tr{transition:background .2s ease}
  tbody tr:hover{background:rgba(255,138,61,.045)}
  td.name{color:var(--txt);font-weight:700}
  td.num,th.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
  td.num{color:var(--txt);font-weight:700}
  td.dv{color:var(--acc2);font-weight:700;font-variant-numeric:tabular-nums}
  .tbl-note{font-size:10.5px;color:var(--dim);line-height:1.7;margin-top:9px;padding-left:2px}
  .tbl-note b{color:var(--sub);font-weight:600}

  /* ---------- 报价与汇总 ---------- */
  .price-grid{display:grid;grid-template-columns:1.66fr .84fr;gap:16px;align-items:stretch}
  .price-card{
    position:relative;overflow:hidden;border:1px solid #5a3a1a;border-radius:16px;padding:18px;
    background:linear-gradient(155deg,#241709 0%,#1a1108 48%,#140e07 100%);
    box-shadow:0 16px 38px rgba(0,0,0,.48), inset 0 1px 0 rgba(255,180,100,.16);
    display:flex;flex-direction:column;
  }
  .price-card::before{
    content:"";position:absolute;top:0;left:0;right:0;height:3px;
    background:repeating-linear-gradient(45deg,var(--acc2) 0 10px,#241505 10px 20px);
  }
  .pc-head{display:flex;justify-content:space-between;align-items:center;font-size:12.5px;font-weight:800;letter-spacing:1.2px;color:#e6c79a;padding-bottom:12px;border-bottom:1px dashed rgba(255,180,100,.2)}
  .pc-head span{font-size:9px;letter-spacing:1.6px;color:#8a6a45;font-weight:600}
  .pc-rows{margin-top:2px;flex:1;display:flex;flex-direction:column;justify-content:space-evenly}
  .pc-row{display:flex;justify-content:space-between;align-items:baseline;gap:12px;padding:9px 0;font-size:12px;color:#c8ab80;border-bottom:1px dashed rgba(255,180,100,.16)}
  .pc-rows .pc-row:last-child{border-bottom:none}
  .pc-row b{color:#f4e3cd;font-variant-numeric:tabular-nums;font-weight:700}
  .pc-row b.off{color:var(--ok)}
  .pc-comp{margin-top:10px}
  .pc-comp-head{display:flex;justify-content:space-between;align-items:baseline;font-size:9px;letter-spacing:1.6px;color:#8a6a45;margin-bottom:7px}
  .pc-comp-head b{font-weight:700;color:#b08b5d}
  .pc-bar{display:flex;gap:2px;height:8px;border-radius:99px;overflow:hidden;background:rgba(255,180,100,.09)}
  .pc-bar i{display:block;height:100%;min-width:3px}
  .pc-bar .b1{flex:89.29;background:linear-gradient(90deg,#d86412,#ff9d4d)}
  .pc-bar .b2{flex:1.79;background:#f0c48a}
  .pc-bar .b3{flex:8.93;background:#a37a4c}
  .pc-legend{display:flex;flex-wrap:wrap;gap:5px 14px;margin-top:8px;font-size:9.5px;color:#9c7d57}
  .pc-legend span{display:inline-flex;align-items:center;gap:5px}
  .pc-legend i{width:6px;height:6px;border-radius:2px;flex:none}
  .pc-legend .d1{background:#f08a3a}
  .pc-legend .d2{background:#f0c48a}
  .pc-legend .d3{background:#a37a4c}
  .pc-divider{height:1px;background:linear-gradient(90deg,rgba(255,180,100,.35),transparent);margin:12px 0 12px}
  .pc-total{
    display:flex;justify-content:space-between;align-items:flex-end;gap:10px;
    padding:15px 16px;border-radius:12px;margin-top:0;
    background:rgba(255,180,100,.07);border:1px solid rgba(255,180,100,.16);
  }
  .pc-total .lab{font-size:11.5px;color:#c9a06a;letter-spacing:1px;padding-bottom:6px}
  .pc-total .num{display:flex;align-items:baseline;gap:3px;font-variant-numeric:tabular-nums}
  .pc-total .num small{font-size:14px;font-weight:700;color:var(--acc2)}
  .pc-total .num span{
    font-size:40px;font-weight:800;line-height:1;
    background:linear-gradient(180deg,#ffe0bb,var(--acc2));-webkit-background-clip:text;background-clip:text;color:transparent;
    text-shadow:0 0 26px rgba(255,160,60,.22);
  }
  .pc-cn{font-size:10.5px;color:#a98d68;letter-spacing:1px;margin-top:9px}
  .pc-tax{font-size:10px;color:#8a6a45;margin-top:6px;line-height:1.6}
  .pc-notes{list-style:none;margin-top:auto;padding-top:16px;border-top:1px dashed rgba(255,180,100,.18)}
  .pc-notes li{position:relative;padding-left:11px;font-size:10px;color:#9c7d57;line-height:1.75}
  .pc-notes li::before{content:"";position:absolute;left:0;top:7px;width:3px;height:3px;border-radius:50%;background:rgba(255,180,100,.6)}

  /* ---------- 服务 / 交期 / 质保 ---------- */
  .svc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:13px}
  .svc{
    position:relative;overflow:hidden;border:1px solid var(--line);border-radius:13px;padding:15px 16px;
    background:linear-gradient(160deg,rgba(17,27,42,.9),rgba(10,16,25,.93));
    box-shadow:inset 0 1px 0 rgba(255,255,255,.035);
    transition:transform .25s ease,border-color .25s ease;
  }
  .svc:hover{transform:translateY(-3px);border-color:#354a68}
  .svc .n{font-size:10px;color:var(--acc);letter-spacing:2px;font-weight:700}
  .svc h3{font-size:13px;font-weight:800;margin-top:5px;letter-spacing:.5px}
  .svc p{font-size:11.5px;color:var(--dim);line-height:1.85;margin-top:7px}
  .svc p b{color:var(--sub);font-weight:600}

  .delivery{
    border:1px solid var(--line);border-radius:16px;padding:18px 20px 16px;
    background:linear-gradient(160deg,#101a29,#0a111a);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
  }
  .timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:18px}
  .timeline::before{
    content:"";position:absolute;left:6px;right:6px;top:5px;height:1px;
    background:linear-gradient(90deg,rgba(255,138,61,.15),rgba(255,138,61,.55),rgba(255,138,61,.15));
  }
  .tl{position:relative;padding-top:22px}
  .tl::before{
    content:"";position:absolute;left:0;top:0;width:11px;height:11px;border-radius:50%;
    background:#0a111a;border:2px solid var(--acc);box-shadow:0 0 10px rgba(255,138,61,.55);
  }
  .tl .day{font-size:10.5px;color:var(--acc2);letter-spacing:1.2px;font-weight:700}
  .tl .t{font-size:12.5px;font-weight:800;margin-top:4px}
  .tl .d{font-size:10.5px;color:var(--dim);line-height:1.75;margin-top:4px}
  .delivery .note{
    margin-top:16px;padding-top:11px;border-top:1px dashed #1e2d42;
    font-size:10.5px;color:var(--dim);line-height:1.8;
  }
  .delivery .note b{color:var(--sub)}

  .warranty{
    display:grid;grid-template-columns:190px 1fr;gap:22px;align-items:center;
    border:1px solid var(--line);border-radius:16px;padding:20px 22px;
    background:
      radial-gradient(380px 160px at 8% 10%,rgba(61,220,151,.09),transparent 70%),
      linear-gradient(160deg,#101a29,#0a111a);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.04);
  }
  .w-badge{text-align:center;border-right:1px solid #1e2d42;padding-right:20px}
  .w-badge .big{
    font-size:52px;font-weight:800;line-height:1;
    background:linear-gradient(180deg,#c9ffe9,var(--ok));-webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .w-badge .unit{font-size:12px;color:var(--ok);letter-spacing:2px;margin-top:5px}
  .w-badge .sub{font-size:9.5px;color:var(--dim);letter-spacing:1px;margin-top:6px}
  .w-list{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:9px 20px}
  .w-list li{position:relative;padding-left:16px;font-size:11.5px;color:var(--sub);line-height:1.75}
  .w-list li::before{
    content:"";position:absolute;left:0;top:6px;width:6px;height:6px;border-radius:50%;
    background:rgba(61,220,151,.18);border:1px solid var(--ok);
  }
  .w-list li b{color:var(--txt);font-weight:700}

  /* ---------- 页脚 ---------- */
  .doc-footer{
    margin-top:30px;padding-top:18px;border-top:1px solid #162232;text-align:center;
    font-size:10.5px;color:var(--dim);line-height:1.9;letter-spacing:.4px;
  }
  .doc-footer .bar{width:56px;height:2px;margin:0 auto 14px;background:linear-gradient(90deg,transparent,var(--acc),transparent)}
  .doc-footer .f-brand{font-size:12.5px;color:var(--sub);font-weight:700;letter-spacing:1px}
  .doc-footer .f-note{margin-top:7px;font-size:9.5px;color:#4d5a6d}

  @keyframes spin{to{transform:rotate(360deg)}}
  @keyframes scan{0%{top:-2px}100%{top:100%}}
  @keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

  @media (max-width:1040px){
    .hero-body{grid-template-columns:1fr;gap:18px}
    .contact-mini{align-items:flex-start}
    .brand-row{flex-direction:column;gap:12px}
    .kpi-strip{grid-template-columns:repeat(2,1fr)}
    .model-grid,.price-grid{grid-template-columns:1fr}
    .price-card{position:static}
    .warranty{grid-template-columns:1fr;gap:16px}
    .w-badge{border-right:none;border-bottom:1px solid #1e2d42;padding-right:0;padding-bottom:14px}
  }
  @media (max-width:720px){
    .page{padding:18px 12px 40px}
    .hero{padding:18px 16px}
    .hero h1{font-size:26px}
    .svc-grid{grid-template-columns:1fr}
    .timeline{grid-template-columns:1fr 1fr;row-gap:22px}
    .timeline::before{display:none}
    .w-list{grid-template-columns:1fr}
    .price-card .pc-total .num span{font-size:32px}
  }
  @media (prefers-reduced-motion:reduce){
    *{animation:none!important;transition:none!important}
    .reveal{opacity:1;transform:none}
  }

  /* ================= 浅色主题 ================= */
  body{
    color:var(--txt);
    background:
      radial-gradient(1100px 560px at 88% -12%, rgba(226,112,26,.09), transparent 60%),
      radial-gradient(900px 520px at -8% 22%, rgba(27,127,166,.06), transparent 58%),
      linear-gradient(180deg,#f8fbfe 0%,#eef3f9 100%);
    background-attachment:fixed;
  }
  body::before{
    background-image:
      linear-gradient(rgba(22,32,46,.032) 1px, transparent 1px),
      linear-gradient(90deg, rgba(22,32,46,.032) 1px, transparent 1px);
    background-size:46px 46px;
  }
  .hero{
    background:linear-gradient(155deg,#ffffff 0%,#fbfdff 58%,#f4f8fd 100%);
    border-color:#dfe7f1;
    box-shadow:0 14px 34px rgba(29,48,76,.10), inset 0 1px 0 #ffffff;
  }
  .hero::before{background:repeating-linear-gradient(45deg,#e2701a 0 10px,#fbe3cf 10px 20px)}
  .hero::after{background:radial-gradient(circle, rgba(226,112,26,.13), transparent 65%)}
  .brand-row{border-bottom-color:#e6eef7}
  .doc-card{
    background:linear-gradient(165deg,#ffffff,#f6fafe);
    border-color:#dbe6f2;
    box-shadow:0 6px 16px rgba(29,48,76,.05), inset 0 1px 0 #ffffff;
  }
  .doc-card .to{border-bottom-color:#e6eef7}
  .chip{background:#f7fafd;border-color:#d5e1ee}
  .kpi{
    background:linear-gradient(160deg,#ffffff,#f8fbfe);
    border-color:#e2eaf4;
    box-shadow:0 6px 18px rgba(30,50,80,.06), inset 0 1px 0 #ffffff;
  }
  .kpi:hover{border-color:#b9cbe0}
  .kpi .v.gold{background:linear-gradient(180deg,#e2701a,#a8470a);-webkit-background-clip:text;background-clip:text;color:transparent}
  .kpi::after{background:radial-gradient(circle at 100% 0,rgba(226,112,26,.12),transparent 70%)}
  .model-panel{
    background:linear-gradient(160deg,#ffffff,#f6fafe);
    border-color:#dfe7f1;
    box-shadow:0 10px 26px rgba(30,50,80,.10), inset 0 1px 0 #ffffff;
  }
  .model-frame{box-shadow:inset 0 0 0 1px #e8eef6}
  .model-loading{background:#f7fafd;color:#637286}
  .spinner{border-color:#e3eaf3;border-top-color:#e2701a}
  .btn-fs{color:#b9540b;background:#fff6ee;border-color:#f0c9a8}
  .btn-fs:hover{background:#ffefe0;border-color:#e2701a;box-shadow:0 0 12px rgba(226,112,26,.18)}
  .spec-side{
    background:linear-gradient(165deg,#ffffff,#f8fbfe);
    border-color:#e2eaf4;
    box-shadow:0 6px 18px rgba(30,50,80,.05), inset 0 1px 0 #ffffff;
  }
  .si{border-bottom-color:#e8eef6}
  .badge.cy{color:#1b7fa6;border-color:rgba(27,127,166,.28);background:rgba(27,127,166,.07)}
  .table-wrap{
    background:#ffffff;
    border-color:#dfe7f1;
    box-shadow:0 8px 22px rgba(30,50,80,.07), inset 0 1px 0 #ffffff;
  }
  thead th{background:#f3f7fc;color:#5a6b80;border-bottom-color:#dbe5f0}
  tbody td{border-bottom-color:#edf2f8}
  tbody tr:hover{background:#fff8f1}
  .price-card{
    border-color:#efd2b0;
    background:linear-gradient(155deg,#fffaf3,#fff6ec 48%,#fff9f2);
    box-shadow:0 12px 30px rgba(120,70,20,.10), inset 0 1px 0 #ffffff;
  }
  .price-card::before{background:repeating-linear-gradient(45deg,#e2701a 0 10px,#fbe3cf 10px 20px)}
  .pc-head{color:#3b2a17;border-bottom-color:#f0dcc6}
  .pc-head span{color:#9a7d58}
  .pc-row{color:#6d5638;border-bottom-color:#f2e2cf}
  .pc-row b{color:#231a10}
  .pc-comp-head{color:#9a7d58}
  .pc-comp-head b{color:#7a5f3c}
  .pc-bar{background:#f6e7d6}
  .pc-legend{color:#8f7350}
  .pc-divider{background:linear-gradient(90deg,#eac9a4,transparent)}
  .pc-total{
    background:linear-gradient(135deg,#fff5ea,#ffe9d6);
    border-color:#f3d8bb;
    box-shadow:inset 0 1px 0 #ffffff;
  }
  .pc-total .lab{color:#8a6a45}
  .pc-total .num small{color:#b9540b}
  .pc-total .num span{
    background:linear-gradient(180deg,#e2701a,#a8470a);
    -webkit-background-clip:text;background-clip:text;color:transparent;
    text-shadow:none;
  }
  .pc-cn{color:#7a5f3c}
  .pc-tax{color:#8f7350}
  .pc-notes{border-top-color:#f0dfc9}
  .pc-notes li{color:#7f6647}
  .pc-notes li::before{background:#d9a56e}
  .svc{
    background:linear-gradient(160deg,#ffffff,#f8fbfe);
    border-color:#e2eaf4;
    box-shadow:0 6px 16px rgba(30,50,80,.05), inset 0 1px 0 #ffffff;
  }
  .svc:hover{border-color:#b9cbe0}
  .delivery{
    background:linear-gradient(160deg,#ffffff,#f7fafd);
    border-color:#e2eaf4;
    box-shadow:0 6px 18px rgba(30,50,80,.05), inset 0 1px 0 #ffffff;
  }
  .timeline::before{background:linear-gradient(90deg,rgba(226,112,26,.15),rgba(226,112,26,.55),rgba(226,112,26,.15))}
  .tl::before{background:#ffffff;border-color:#e2701a;box-shadow:0 0 0 3px #fff4ea}
  .delivery .note{border-top-color:#e8eef6}
  .warranty{
    background:
      radial-gradient(380px 160px at 8% 10%,rgba(13,138,92,.07),transparent 70%),
      linear-gradient(160deg,#ffffff,#f8fbfe);
    border-color:#e2eaf4;
    box-shadow:0 6px 18px rgba(30,50,80,.05), inset 0 1px 0 #ffffff;
  }
  .w-badge{border-right-color:#e8eef6}
  .w-badge .big{background:linear-gradient(180deg,#0fae74,#0a7a50);-webkit-background-clip:text;background-clip:text;color:transparent}
  .w-list li::before{background:#e6f6ef;border-color:#0d8a5c}
  .doc-footer{border-top-color:#dde6f0;color:var(--dim)}
  .doc-footer .f-note{color:#7b8a9f}
  .friend-links{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;margin-top:14px}
  .friend-links .fl-label{font-size:13px;color:#7b8a9f;letter-spacing:1px;margin-right:2px}
  .friend-links a{
    font-size:14px;letter-spacing:.4px;color:#8a4a12;text-decoration:none;
    background:#ffffff;border:1px solid #e7c9a8;border-radius:999px;padding:7px 15px;
    box-shadow:0 2px 8px rgba(80,50,20,.06);
    transition:background .2s ease,border-color .2s ease,color .2s ease,transform .2s ease,box-shadow .2s ease;
  }
  .friend-links a:hover{
    background:#fff4e8;border-color:#e2701a;color:#b9540b;transform:translateY(-1px);
    box-shadow:0 6px 16px rgba(226,112,26,.18);
  }

  /* ================= 中老年大字体模式 ================= */
  html.large-text .brand .cn{font-size:21px}
  html.large-text .brand .en{font-size:12px}
  html.large-text .contact-mini{font-size:13px}
  html.large-text .eyebrow{font-size:13px}
  html.large-text .hero h1{font-size:42px}
  html.large-text .hero .lead{font-size:16px;line-height:1.9}
  html.large-text .chip{font-size:12.5px}
  html.large-text .doc-card .to{font-size:13px}
  html.large-text .doc-row{font-size:14.5px;padding:6px 0}
  html.large-text .kpi .k{font-size:13px}
  html.large-text .kpi .v{font-size:27px}
  html.large-text .kpi .v small{font-size:13.5px}
  html.large-text .sec-head .idx{font-size:13px}
  html.large-text .sec-head h2{font-size:22px}
  html.large-text .sec-head .tag{font-size:12.5px}
  html.large-text .model-tools{font-size:13px}
  html.large-text .btn-fs{font-size:13px;padding:7px 14px}
  html.large-text .model-loading{font-size:15px}
  html.large-text .model-loading .sub-hint{font-size:12.5px}
  html.large-text .spec-side h3{font-size:15px}
  html.large-text .si{font-size:15px;padding:9px 0}
  html.large-text .si b .u{font-size:12px}
  html.large-text .badge{font-size:12px;padding:4px 8px}
  html.large-text .spec-note{font-size:12.5px}
  html.large-text table{font-size:16px}
  html.large-text thead th{font-size:13px;padding:13px 14px}
  html.large-text tbody td{padding:13px 14px}
  html.large-text .tbl-note{font-size:13px}
  html.large-text .pc-head{font-size:15px}
  html.large-text .pc-row{font-size:14.5px}
  html.large-text .pc-comp-head{font-size:11px}
  html.large-text .pc-legend{font-size:11.5px}
  html.large-text .pc-total .lab{font-size:14px}
  html.large-text .pc-total .num span{font-size:48px}
  html.large-text .pc-cn{font-size:13px}
  html.large-text .pc-tax{font-size:12.5px}
  html.large-text .pc-notes li{font-size:12.5px}
  html.large-text .svc .n{font-size:12px}
  html.large-text .svc h3{font-size:16px}
  html.large-text .svc p{font-size:14px;line-height:1.9}
  html.large-text .tl .day{font-size:12.5px}
  html.large-text .tl .t{font-size:15px}
  html.large-text .tl .d{font-size:13px}
  html.large-text .delivery .note{font-size:13px}
  html.large-text .w-badge .unit{font-size:14px}
  html.large-text .w-badge .sub{font-size:11.5px}
  html.large-text .w-list li{font-size:14px}
  html.large-text .doc-footer{font-size:12.5px}
  html.large-text .doc-footer .f-brand{font-size:15px}
  html.large-text .doc-footer .f-note{font-size:11.5px}

  @media (max-width:720px){
    html.large-text .hero h1{font-size:31px}
    html.large-text .kpi .v{font-size:24px}
    html.large-text .pc-total .num span{font-size:38px}
    html.large-text table{font-size:15px}
    .friend-links a{font-size:13px;padding:6px 12px}
  }

  /* ================= 手机适配 ================= */
  @media (max-width:720px){
    html,body{max-width:100%;overflow-x:hidden}
    .page{padding:16px 12px 36px}
    .hero{padding:18px 16px 16px;border-radius:14px}
    .hero::after{display:none}
    .hero h1{font-size:24px}
    html.large-text .hero h1{font-size:26px}
    .hero .lead{font-size:13px}
    html.large-text .hero .lead{font-size:14px}
    .brand .cn{font-size:16px}
    html.large-text .brand .cn{font-size:18px}
    .brand .en{font-size:9px}
    html.large-text .brand .en{font-size:10px}
    .contact-mini{font-size:11px}
    html.large-text .contact-mini{font-size:12px}

    .doc-card{padding:12px 13px}
    .doc-row{gap:10px}
    .doc-row span{white-space:normal}
    .doc-row b{max-width:64%;white-space:normal;text-align:right}
    html.large-text .doc-row{font-size:13.5px}

    .kpi-strip{grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}
    .kpi{padding:11px 12px}
    .kpi .v{font-size:20px}
    html.large-text .kpi .v{font-size:22px}

    .sec-head{flex-wrap:wrap;gap:8px}
    .sec-head h2{font-size:16px;white-space:normal}
    html.large-text .sec-head h2{font-size:19px}
    .sec-head .tag{white-space:normal}
    .sec-head .line{min-width:24px}

    .model-grid{gap:12px}
    .model-frame{aspect-ratio:4/3}
    .model-tools{flex-wrap:wrap;gap:8px;font-size:11px}
    html.large-text .model-tools{font-size:12.5px}
    .spec-side{padding:14px}
    .si{font-size:12.5px;padding:6px 0}
    html.large-text .si{font-size:14px}
    .spec-note{font-size:11px}

    .tbl-note{font-size:11px}
    html.large-text .tbl-note{font-size:12px}

    .price-grid{display:flex;flex-direction:column;gap:12px}
    .price-card{order:-1;padding:14px}
    .pc-total .num span{font-size:30px}
    html.large-text .pc-total .num span{font-size:33px}
    .pc-cn{font-size:12px}
    html.large-text .pc-cn{font-size:13px}
    .pc-tax{font-size:10.5px;line-height:1.7}
    html.large-text .pc-tax{font-size:12px}

    .svc-grid{grid-template-columns:1fr;gap:10px}
    .svc{padding:15px}
    .timeline{grid-template-columns:1fr;row-gap:18px}
    .delivery,.warranty{padding:16px}
    .w-badge{padding-bottom:12px}
    .friend-links{gap:6px}
    .friend-links a{font-size:12.5px;padding:6px 11px}
    html.large-text .friend-links a{font-size:13px}
    .doc-footer{word-break:break-word}

    /* ---- 表格：窄屏转为纵向卡片，杜绝横向滚动 ---- */
    .table-wrap{overflow:visible;border-radius:12px}
    table.t-card{display:block;min-width:0;width:100%;font-size:13px}
    .t-card thead{display:none}
    .t-card tbody{display:block}
    .t-card tr{display:block;position:relative;padding:13px 13px 11px;border-bottom:1px solid #edf2f8;transition:none}
    .t-card tbody tr:last-child{border-bottom:none}
    .t-card tbody tr:hover{background:transparent}
    .t-card td{
      display:grid;grid-template-columns:96px 1fr;gap:10px;align-items:start;
      padding:3px 0;border:none;white-space:normal;text-align:left;line-height:1.65;
    }
    .t-card td.num{text-align:left;white-space:normal}
    .t-card td::before{font-size:11.5px;color:var(--dim);letter-spacing:.4px;line-height:1.7;content:""}
    html.large-text table.t-card{font-size:14px}
    html.large-text .t-card td::before{font-size:12.5px}

    .t-params td:nth-child(1){
      display:block;padding:0 0 8px;margin-bottom:5px;border-bottom:1px dashed #e3ebf4;
      font-size:14.5px;font-weight:800;color:var(--txt);
    }
    html.large-text .t-params td:nth-child(1){font-size:16px}
    .t-params td:nth-child(2)::before{content:"允许调节范围"}
    .t-params td:nth-child(3)::before{content:"设计工况"}
    .t-params td:nth-child(4)::before{content:"单位 / 说明"}

    .t-list td:nth-child(1),
    .t-price td:nth-child(1){
      display:block;position:absolute;top:13px;right:13px;padding:0;margin:0;
      font-size:11px;font-weight:700;color:#a8b4c5;letter-spacing:1px;
    }
    .t-list td:nth-child(1)::before,
    .t-price td:nth-child(1)::before{content:none}
    .t-list td:nth-child(2),
    .t-price td:nth-child(2){
      display:block;padding:0 42px 8px 0;margin-bottom:5px;border-bottom:1px dashed #e3ebf4;
      font-size:14.5px;font-weight:800;color:var(--txt);
    }
    html.large-text .t-list td:nth-child(2),
    html.large-text .t-price td:nth-child(2){font-size:16px}
    .t-list td:nth-child(2)::before,
    .t-price td:nth-child(2)::before{content:none}
    .t-list td:nth-child(3)::before{content:"型号 / 规格"}
    .t-list td:nth-child(4)::before{content:"数量"}
    .t-list td:nth-child(5)::before{content:"单位"}
    .t-list td:nth-child(6)::before{content:"备注"}
    .t-price td:nth-child(3)::before{content:"配置说明"}
    .t-price td:nth-child(4)::before{content:"数量"}
    .t-price td:nth-child(5)::before{content:"单价（元）"}
    .t-price td:nth-child(6)::before{content:"金额（元）"}
  }

  @media (max-width:420px){
    .page{padding:12px 9px 32px}
    .hero{padding:16px 13px 14px}
    .hero h1{font-size:22px}
    html.large-text .hero h1{font-size:24px}
    .doc-row b{max-width:60%}
    .kpi .v{font-size:18px}
    html.large-text .kpi .v{font-size:20px}
    .t-card td{grid-template-columns:86px 1fr;gap:8px}
  }