:root{
      --primary:#0B3D91;
      --primary-dark:#06265f;
      --primary-light:#eaf1fb;
      --template-theme:{主题色};
      --navy:#071a38;
      --silver:#d9e0ea;
      --silver-light:#f4f6f9;
      --white:#fff;
      --text:#172033;
      --muted:#667085;
      --border:#dfe5ee;
      --success:#18794e;
      --shadow:0 16px 40px rgba(7,26,56,.1);
      --container:1200px;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--text);
      background:#fff;
      font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;
      line-height:1.7;
      letter-spacing:0;
    }
    body.drawer-lock{overflow:hidden}
    img{display:block;max-width:100%}
    a{color:inherit;text-decoration:none}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer}
    .container{width:min(var(--container),calc(100% - 40px));margin:0 auto}

    .topbar{
      color:#e7edf7;
      background:var(--navy);
      border-bottom:1px solid rgba(255,255,255,.1);
      font-size:13px;
    }
    .topbar-inner{
      min-height:38px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .topbar-contact{display:flex;align-items:center;gap:22px}
    .topbar-contact a:hover{color:#fff}

    .header{
      position:relative;
      z-index:50;
      background:#fff;
      border-bottom:1px solid var(--border);
      box-shadow:0 4px 18px rgba(7,26,56,.05);
    }
    .header-inner{
      min-height:76px;
      display:flex;
      align-items:center;
      gap:28px;
    }
    .logo{
      min-width:0;
      display:inline-flex;
      align-items:center;
      gap:11px;
      color:var(--navy);
      font-weight:800;
    }
    .logo img{
      width:42px;
      height:42px;
      flex:0 0 42px;
      object-fit:contain;
    }
    .logo span{max-width:190px;overflow-wrap:anywhere}
    .main-nav{margin-left:auto;align-self:stretch}
    .nav-list{
      height:100%;
      margin:0;
      padding:0;
      display:flex;
      align-items:stretch;
      list-style:none;
    }
    .nav-item{position:relative;display:flex;align-items:stretch}
    .nav-link{
      position:relative;
      display:flex;
      align-items:center;
      padding:0 12px;
      color:#28364d;
      font-size:15px;
      font-weight:700;
      white-space:nowrap;
    }
    .nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--primary)}
    .nav-link::after{
      content:"";
      position:absolute;
      right:12px;
      bottom:0;
      left:12px;
      height:3px;
      background:var(--primary);
      transform:scaleX(0);
      transition:transform .2s ease;
    }
    .nav-item:hover>.nav-link::after,.nav-item:focus-within>.nav-link::after{transform:scaleX(1)}
    .nav-link.has-arrow{padding-right:25px}
    .nav-link.has-arrow::before{
      content:"";
      position:absolute;
      right:11px;
      top:50%;
      width:6px;
      height:6px;
      border-right:1.5px solid currentColor;
      border-bottom:1.5px solid currentColor;
      transform:translateY(-70%) rotate(45deg);
    }
    .dropdown-panel,.mega-menu{
      position:absolute;
      top:100%;
      visibility:hidden;
      opacity:0;
      transform:translateY(8px);
      pointer-events:none;
      transition:opacity .18s ease,transform .18s ease,visibility .18s;
    }
    .nav-item:hover>.dropdown-panel,
    .nav-item:focus-within>.dropdown-panel,
    .nav-item:hover>.mega-menu,
    .nav-item:focus-within>.mega-menu{
      visibility:visible;
      opacity:1;
      transform:translateY(0);
      pointer-events:auto;
    }
    .dropdown-panel{
      left:0;
      width:340px;
      padding:20px;
      background:#fff;
      border:1px solid var(--border);
      border-top:3px solid var(--primary);
      box-shadow:var(--shadow);
    }
    .dropdown-title{margin:0 0 10px;color:var(--navy);font-weight:800}
    .news-link{
      display:block;
      padding:10px 0;
      overflow:hidden;
      color:#344054;
      border-bottom:1px solid #edf0f4;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .news-link:hover{color:var(--primary)}
    .dropdown-footer,.mega-footer{
      display:flex;
      align-items:center;
      justify-content:space-between;
      color:var(--primary);
      font-size:14px;
      font-weight:800;
    }
    .dropdown-footer{padding-top:14px}
    .mega-menu{
      left:50%;
      width:min(960px,calc(100vw - 40px));
      background:#fff;
      border:1px solid var(--border);
      border-top:3px solid var(--primary);
      box-shadow:var(--shadow);
      transform:translate(-50%,8px);
    }
    .nav-item:hover>.mega-menu,.nav-item:focus-within>.mega-menu{transform:translate(-50%,0)}
    .mega-layout{display:grid;grid-template-columns:230px minmax(0,1fr)}
    .mega-side{
      padding:25px;
      color:#fff;
      background:var(--navy);
    }
    .mega-side h3{margin:0 0 7px;font-size:18px}
    .mega-side p{margin:0 0 18px;color:#c9d4e7;font-size:13px;line-height:1.65}
    .mega-categories{display:grid;gap:6px}
    .mega-categories a{
      padding:7px 9px;
      color:#eaf0fa;
      border:1px solid rgba(255,255,255,.14);
      font-size:13px;
    }
    .mega-categories a:hover{background:rgba(255,255,255,.1)}
    .mega-content{min-width:0;padding:22px}
    .mega-head{
      margin-bottom:14px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
    }
    .mega-head strong{color:var(--navy)}
    .mega-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
    .mega-card{
      min-width:0;
      padding:12px;
      display:grid;
      grid-template-columns:42px minmax(0,1fr);
      align-items:center;
      gap:5px 10px;
      border:1px solid var(--border);
      background:#fff;
    }
    .mega-card:hover{border-color:#9fb7dc;box-shadow:0 7px 18px rgba(11,61,145,.09)}
    .mega-card img{
      width:42px;
      height:42px;
      grid-row:1 / span 3;
      object-fit:contain;
      background:var(--silver-light);
    }
    .mega-card strong,.mega-card p{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
    .mega-card strong{color:var(--navy);font-size:13px}
    .mega-card p{margin:0;color:var(--muted);font-size:12px}
    .mega-meta{display:flex;flex-wrap:wrap;gap:4px 8px;color:#667085;font-size:11px}
    .header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}
    .header-btns>a,.open-account{
      min-height:40px;
      padding:8px 14px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      border:1px solid var(--primary);
      color:var(--primary);
      font-size:14px;
      font-weight:800;
    }
    .open-account{color:#fff!important;background:var(--primary)}
    .hamburger{
      width:42px;
      height:42px;
      padding:9px;
      display:none;
      border:1px solid var(--border);
      background:#fff;
    }
    .hamburger span{
      width:100%;
      height:2px;
      margin:5px 0;
      display:block;
      background:var(--navy);
      transition:transform .2s ease,opacity .2s ease;
    }
    .hamburger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
    .hamburger.active span:nth-child(2){opacity:0}
    .hamburger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

    .drawer-overlay{
      position:fixed;
      z-index:80;
      inset:0;
      visibility:hidden;
      opacity:0;
      background:rgba(7,26,56,.55);
      transition:opacity .25s ease,visibility .25s;
    }
    .drawer-overlay.open{visibility:visible;opacity:1}
    .mobile-drawer{
      position:fixed;
      z-index:90;
      top:0;
      right:0;
      bottom:0;
      width:min(390px,92vw);
      overflow-y:auto;
      background:#fff;
      box-shadow:-20px 0 50px rgba(7,26,56,.2);
      transform:translateX(102%);
      transition:transform .25s ease;
    }
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{
      min-height:70px;
      padding:12px 16px;
      display:flex;
      align-items:center;
      gap:10px;
      color:#fff;
      background:var(--navy);
    }
    .drawer-head>a{
      padding:7px 11px;
      border:1px solid rgba(255,255,255,.28);
      font-size:13px;
    }
    .drawer-close{
      width:38px;
      height:38px;
      margin-left:auto;
      color:#fff;
      background:transparent;
      border:1px solid rgba(255,255,255,.28);
      font-size:25px;
      line-height:1;
    }
    .drawer-menu{padding:12px 18px 32px}
    .drawer-link,.drawer-toggle{
      width:100%;
      min-height:48px;
      padding:12px 4px;
      display:flex;
      align-items:center;
      color:var(--navy);
      background:#fff;
      border:0;
      border-bottom:1px solid var(--border);
      font-weight:800;
      text-align:left;
    }
    .drawer-toggle{position:relative;padding-right:30px}
    .drawer-toggle::after{
      content:"+";
      position:absolute;
      right:5px;
      font-size:21px;
      font-weight:400;
    }
    .drawer-toggle.active::after{content:"−"}
    .drawer-submenu{
      max-height:0;
      overflow:hidden;
      background:var(--silver-light);
      transition:max-height .3s ease;
    }
    .drawer-submenu.open{max-height:720px}
    .drawer-submenu a{
      padding:10px 14px;
      display:block;
      color:#475467;
      border-bottom:1px solid #e2e6ed;
      font-size:14px;
    }

    .ea-content-stack{min-width:0;background:#f7f9fc}
    .ea-content-stack .product-breadcrumb{
      padding:18px 0;
      color:#667085;
      font-size:14px;
    }
    .ea-content-stack .product-breadcrumb a{color:var(--primary)}
    .ea-content-stack .product-hero{
      padding:40px 0 48px;
      color:#fff;
      background:var(--navy);
      border-bottom:4px solid var(--silver);
    }
    .ea-content-stack .product-hero-inner{
      display:grid;
      grid-template-columns:minmax(280px,440px) minmax(0,1fr);
      align-items:center;
      gap:56px;
    }
    .ea-content-stack .product-media{
      position:relative;
      min-height:340px;
      padding:28px;
      display:flex;
      align-items:center;
      justify-content:center;
      overflow:hidden;
      background:#fff;
      border:1px solid #cbd4e2;
      box-shadow:0 22px 45px rgba(0,0,0,.22);
    }
    .ea-content-stack .product-media::before{
      content:"产品资料";
      position:absolute;
      top:0;
      left:0;
      padding:7px 13px;
      color:var(--navy);
      background:var(--silver);
      font-size:12px;
      font-weight:800;
    }
    .ea-content-stack .product-media img{
      width:100%;
      max-height:300px;
      object-fit:contain;
    }
    .ea-content-stack .product-kicker{
      margin:0 0 10px;
      color:#cbd6e8;
      font-size:14px;
      font-weight:700;
    }
    .ea-content-stack .product-title{
      margin:0;
      color:#fff;
      font-size:clamp(30px,4vw,48px);
      line-height:1.22;
      overflow-wrap:anywhere;
    }
    .ea-content-stack .product-summary{
      max-width:720px;
      margin:18px 0 0;
      color:#d7e0ee;
      font-size:17px;
    }
    .ea-content-stack .product-meta{
      margin-top:24px;
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }
    .ea-content-stack .product-meta span{
      padding:8px 12px;
      color:#eaf0f8;
      border:1px solid rgba(255,255,255,.2);
      background:rgba(255,255,255,.06);
      font-size:13px;
    }
    .ea-content-stack .product-actions{
      margin-top:28px;
      display:flex;
      flex-wrap:wrap;
      gap:12px;
    }
    .ea-content-stack .primary-action,
    .ea-content-stack .secondary-action{
      min-height:46px;
      padding:10px 19px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      font-weight:800;
    }
    .ea-content-stack .primary-action{color:var(--navy);background:#fff}
    .ea-content-stack .secondary-action{color:#fff;border:1px solid #aebbd0}
    .ea-content-stack .product-layout{
      padding:52px 0 70px;
      display:grid;
      grid-template-columns:minmax(0,1fr) 300px;
      align-items:start;
      gap:30px;
    }
    .ea-content-stack .product-article,
    .ea-content-stack .product-side-panel{
      min-width:0;
      background:#fff;
      border:1px solid var(--border);
    }
    .ea-content-stack .product-article{padding:clamp(22px,4vw,46px)}
    .ea-content-stack .section-heading{
      margin:0 0 24px;
      padding-bottom:14px;
      color:var(--navy);
      border-bottom:1px solid var(--border);
      font-size:25px;
      line-height:1.35;
    }
    .ea-content-stack .section-heading::after{
      content:"";
      width:58px;
      height:3px;
      margin-top:12px;
      display:block;
      background:var(--primary);
    }
    .ea-content-stack .product-body{
      min-width:0;
      max-width:100%;
      overflow-x:auto;
      color:#344054;
      font-size:16px;
    }
    .ea-content-stack .product-body img,
    .ea-content-stack .product-body video,
    .ea-content-stack .product-body iframe,
    .ea-content-stack .product-body table{max-width:100%}
    .ea-content-stack .product-body table{
      width:100%;
      border-collapse:collapse;
    }
    .ea-content-stack .product-body th,
    .ea-content-stack .product-body td{
      padding:10px;
      border:1px solid var(--border);
    }
    .ea-content-stack .product-body a{color:var(--primary);text-decoration:underline}
    .ea-content-stack .product-body h2,
    .ea-content-stack .product-body h3{color:var(--navy);line-height:1.4}
    .ea-content-stack .product-side-panel{padding:24px;position:sticky;top:20px}
    .ea-content-stack .product-side-panel h2{margin:0 0 18px;color:var(--navy);font-size:20px}
    .ea-content-stack .fact-list{margin:0;display:grid;gap:0}
    .ea-content-stack .fact-row{
      padding:13px 0;
      display:grid;
      gap:3px;
      border-bottom:1px solid var(--border);
    }
    .ea-content-stack .fact-row dt{color:var(--muted);font-size:13px}
    .ea-content-stack .fact-row dd{margin:0;color:var(--navy);font-weight:800;overflow-wrap:anywhere}
    .ea-content-stack .side-action{
      width:100%;
      min-height:44px;
      margin-top:20px;
      display:flex;
      align-items:center;
      justify-content:center;
      color:#fff;
      background:var(--primary);
      font-weight:800;
    }
    .ea-content-stack .related-section{padding:0 0 76px}
    .ea-content-stack .related-head{
      margin-bottom:22px;
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:20px;
    }
    .ea-content-stack .related-head h2{margin:0;color:var(--navy);font-size:28px}
    .ea-content-stack .related-head p{margin:0;color:var(--muted)}
    .ea-content-stack .related-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:20px;
    }
    .ea-content-stack .related-card{
      min-width:0;
      overflow:hidden;
      background:#fff;
      border:1px solid var(--border);
      transition:transform .2s ease,box-shadow .2s ease;
    }
    .ea-content-stack .related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
    .ea-content-stack .related-image{
      height:190px;
      padding:18px;
      display:flex;
      align-items:center;
      justify-content:center;
      background:var(--silver-light);
      border-bottom:1px solid var(--border);
    }
    .ea-content-stack .related-image img{width:100%;height:100%;object-fit:contain}
    .ea-content-stack .related-body{padding:19px}
    .ea-content-stack .related-body h3{
      margin:0 0 9px;
      color:var(--navy);
      font-size:18px;
      line-height:1.45;
      overflow-wrap:anywhere;
    }
    .ea-content-stack .related-body p{
      min-height:52px;
      margin:0 0 14px;
      display:-webkit-box;
      overflow:hidden;
      color:var(--muted);
      font-size:14px;
      -webkit-box-orient:vertical;
      -webkit-line-clamp:2;
    }
    .ea-content-stack .related-meta{
      display:flex;
      justify-content:space-between;
      gap:10px;
      color:#7b8494;
      border-top:1px solid var(--border);
      padding-top:12px;
      font-size:12px;
    }

    .footer{color:#d7e0ef;background:var(--navy)}
    .footer-main{
      padding:54px 0 42px;
      display:grid;
      grid-template-columns:1.5fr 1fr 1fr 1.15fr;
      gap:42px;
    }
    .footer .logo{color:#fff}
    .footer-brand p{max-width:420px;margin:17px 0;color:#aebbd0;font-size:14px}
    .footer-social{color:#fff}
    .footer h3{margin:7px 0 17px;color:#fff;font-size:16px}
    .footer-links,.footer-contact{display:grid;gap:9px}
    .footer-links a,.footer-contact a,.footer-contact span{color:#aebbd0;font-size:14px}
    .footer-links a:hover,.footer-contact a:hover{color:#fff}
    .footer-bottom{
      min-height:66px;
      padding:16px 0;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      color:#96a5ba;
      border-top:1px solid rgba(255,255,255,.12);
      font-size:13px;
    }

    @media (max-width:1120px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-inner{min-height:68px}
      .header-btns{margin-left:auto}
      .ea-content-stack .product-hero-inner{gap:34px}
    }
    @media (max-width:900px){
      .ea-content-stack .product-hero-inner{grid-template-columns:1fr}
      .ea-content-stack .product-media{width:min(560px,100%);min-height:300px;margin:0 auto}
      .ea-content-stack .product-intro{text-align:center}
      .ea-content-stack .product-summary{margin-right:auto;margin-left:auto}
      .ea-content-stack .product-meta,.ea-content-stack .product-actions{justify-content:center}
      .ea-content-stack .product-layout{grid-template-columns:1fr}
      .ea-content-stack .product-side-panel{position:static}
      .ea-content-stack .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .footer-main{grid-template-columns:repeat(2,minmax(0,1fr))}
    }
    @media (max-width:640px){
      .container{width:min(100% - 28px,var(--container))}
      .topbar-inner{padding:8px 0;align-items:flex-start;flex-direction:column;gap:3px}
      .topbar-contact{width:100%;gap:3px;align-items:flex-start;flex-direction:column}
      .header-btns>a:not(.open-account){display:none}
      .open-account{min-height:38px;padding:7px 11px}
      .logo img{width:38px;height:38px;flex-basis:38px}
      .logo span{max-width:140px;font-size:14px}
      .ea-content-stack .product-hero{padding:28px 0 36px}
      .ea-content-stack .product-media{min-height:230px;padding:22px}
      .ea-content-stack .product-title{font-size:30px}
      .ea-content-stack .product-summary{font-size:15px}
      .ea-content-stack .product-actions{display:grid}
      .ea-content-stack .product-layout{padding:34px 0 50px}
      .ea-content-stack .product-article{padding:21px 17px}
      .ea-content-stack .related-head{align-items:flex-start;flex-direction:column;gap:4px}
      .ea-content-stack .related-grid{grid-template-columns:1fr}
      .footer-main{grid-template-columns:1fr;gap:28px}
      .footer-bottom{align-items:flex-start;flex-direction:column;justify-content:center;gap:3px}
    }