:root{
      --primary:#0B3D91;
      --template-theme:{主题色};
      --primary-dark:#07295f;
      --primary-soft:#eaf1fc;
      --accent:#d79a2b;
      --accent-soft:#fff5df;
      --ink:#182235;
      --muted:#647086;
      --line:#e2e7ef;
      --surface:#ffffff;
      --surface-alt:#f5f7fb;
      --shadow:0 18px 45px rgba(20,38,72,.1);
      --radius:18px;
      --container:1200px;
    }

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

    .topbar{
      color:#dce8ff;
      background:#071b3d;
      border-bottom:1px solid rgba(255,255,255,.09);
      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{transition:color .2s ease}
    .topbar-contact a:hover{color:#fff}

    .header{
      position:relative;
      z-index:50;
      background:rgba(255,255,255,.98);
      border-bottom:1px solid var(--line);
      box-shadow:0 4px 18px rgba(23,39,70,.05);
    }
    .header-inner{
      min-height:78px;
      display:flex;
      align-items:center;
      gap:28px;
    }
    .logo{
      min-width:170px;
      display:inline-flex;
      align-items:center;
      gap:11px;
      color:var(--primary-dark);
      font-size:19px;
      font-weight:800;
    }
    .logo img{
      width:42px;
      height:42px;
      object-fit:contain;
      border-radius:10px;
    }
    .main-nav{align-self:stretch;flex:1}
    .nav-list{
      height:100%;
      margin:0;
      padding:0;
      display:flex;
      justify-content:center;
      align-items:stretch;
      list-style:none;
    }
    .nav-item{
      position:relative;
      display:flex;
      align-items:center;
    }
    .nav-link{
      height:100%;
      padding:0 13px;
      display:flex;
      align-items:center;
      color:#27344b;
      font-size:15px;
      font-weight:650;
      white-space:nowrap;
      transition:color .2s ease;
    }
    .nav-link:hover,
    .nav-item:focus-within>.nav-link{color:var(--primary)}
    .has-arrow::after{
      content:"";
      width:6px;
      height:6px;
      margin-left:7px;
      border-right:1.5px solid currentColor;
      border-bottom:1.5px solid currentColor;
      transform:rotate(45deg) translateY(-2px);
      transition:transform .2s ease;
    }
    .nav-item:hover .has-arrow::after,
    .nav-item:focus-within .has-arrow::after{
      transform:rotate(225deg) translate(-1px,-1px);
    }
    .nav-item::after{
      content:"";
      position:absolute;
      top:100%;
      left:0;
      right:0;
      height:12px;
      display:none;
    }
    .nav-item:hover::after,
    .nav-item:focus-within::after{display:block}

    .dropdown-panel,
    .mega-menu{
      position:absolute;
      top:100%;
      left:50%;
      z-index:60;
      visibility:hidden;
      opacity:0;
      pointer-events:none;
      transform:translate(-50%,10px);
      transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
      background:#fff;
      border:1px solid var(--line);
      border-radius:0 0 16px 16px;
      box-shadow:0 24px 55px rgba(15,34,67,.16);
    }
    .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;
      pointer-events:auto;
      transform:translate(-50%,0);
    }
    .dropdown-panel{
      width:290px;
      padding:12px;
    }
    .dropdown-panel>a:not(.dropdown-all){
      display:block;
      padding:10px 12px;
      border-radius:9px;
      color:#3b4659;
      font-size:14px;
      overflow:hidden;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .dropdown-panel>a:not(.dropdown-all):hover{
      color:var(--primary);
      background:var(--primary-soft);
    }
    .dropdown-all{
      display:block;
      margin-top:7px;
      padding:10px 12px;
      color:#fff;
      background:var(--primary);
      border-radius:9px;
      text-align:center;
      font-size:14px;
      font-weight:700;
    }
    .mega-menu{
      width:min(880px,calc(100vw - 40px));
      padding:22px;
    }
    .mega-wide{width:min(1050px,calc(100vw - 40px))}
    .mega-title{
      margin:0 0 14px;
      color:#1e2b40;
      font-size:16px;
      line-height:1.4;
    }
    .mega-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:12px;
    }
    .mega-card{
      min-width:0;
      padding:13px;
      display:grid;
      grid-template-columns:42px minmax(0,1fr);
      gap:5px 10px;
      align-items:center;
      border:1px solid #e7ebf2;
      border-radius:12px;
      background:#fff;
      transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
    }
    .mega-card:hover{
      transform:translateY(-2px);
      border-color:#b9c9e5;
      box-shadow:0 10px 25px rgba(11,61,145,.09);
    }
    .mega-card img{
      grid-row:1/4;
      width:42px;
      height:42px;
      object-fit:contain;
      border-radius:9px;
      background:#f2f5fa;
    }
    .mega-card img.video-thumb,
    .mega-card img.product-thumb{
      object-fit:cover;
    }
    .mega-card strong{
      min-width:0;
      color:#243147;
      font-size:14px;
      overflow:hidden;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .mega-card p{
      min-width:0;
      margin:0;
      color:var(--muted);
      font-size:12px;
      line-height:1.45;
      display:-webkit-box;
      overflow:hidden;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
    }
    .mega-meta{
      display:flex;
      flex-wrap:wrap;
      gap:4px 10px;
      color:#7a8598;
      font-size:11px;
    }
    .mega-footer{
      display:block;
      margin-top:16px;
      padding:10px 14px;
      color:var(--primary);
      background:var(--primary-soft);
      border-radius:10px;
      text-align:center;
      font-size:14px;
      font-weight:750;
    }
    .mega-columns{
      display:grid;
      grid-template-columns:190px minmax(0,1fr);
      gap:24px;
    }
    .mega-categories{
      padding-right:20px;
      border-right:1px solid var(--line);
    }
    .mega-categories>a{
      display:block;
      padding:8px 10px;
      color:#4c586b;
      border-radius:8px;
      font-size:14px;
    }
    .mega-categories>a:hover{
      color:var(--primary);
      background:var(--primary-soft);
    }

    .header-btns{
      display:flex;
      align-items:center;
      justify-content:flex-end;
      gap:10px;
      white-space:nowrap;
    }
    .header-btns>a:not(.account-btn){
      color:var(--primary);
      font-size:14px;
      font-weight:700;
    }
    .account-btn{
      padding:10px 16px;
      color:#fff;
      background:var(--primary);
      border-radius:9px;
      font-size:14px;
      font-weight:750;
      box-shadow:0 8px 18px rgba(11,61,145,.2);
    }
    .account-btn:hover{background:var(--primary-dark)}
    .hamburger{
      width:42px;
      height:42px;
      padding:9px;
      display:none;
      border:1px solid var(--line);
      border-radius:10px;
      background:#fff;
      cursor:pointer;
    }
    .hamburger span{
      width:100%;
      height:2px;
      margin:5px 0;
      display:block;
      background:var(--ink);
      border-radius:3px;
      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;
      inset:0;
      z-index:90;
      visibility:hidden;
      opacity:0;
      background:rgba(5,15,32,.58);
      transition:opacity .25s ease,visibility .25s ease;
    }
    .drawer-overlay.open{visibility:visible;opacity:1}
    .mobile-drawer{
      position:fixed;
      top:0;
      right:0;
      bottom:0;
      z-index:100;
      width:min(390px,88vw);
      overflow-y:auto;
      transform:translateX(105%);
      background:#fff;
      box-shadow:-20px 0 45px rgba(4,18,44,.2);
      transition:transform .28s ease;
    }
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{
      min-height:72px;
      padding:12px 18px;
      display:flex;
      align-items:center;
      gap:12px;
      color:#fff;
      background:var(--primary);
    }
    .drawer-head>a{font-weight:700}
    .drawer-close{
      width:38px;
      height:38px;
      margin-left:auto;
      padding:0;
      color:#fff;
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.25);
      border-radius:9px;
      font-size:27px;
      line-height:1;
      cursor:pointer;
    }
    .drawer-menu{padding:16px}
    .drawer-link,
    .drawer-toggle{
      width:100%;
      min-height:48px;
      padding:11px 12px;
      display:flex;
      align-items:center;
      color:#26344b;
      background:transparent;
      border:0;
      border-bottom:1px solid #edf0f5;
      text-align:left;
      font-weight:700;
      cursor:pointer;
    }
    .drawer-toggle::after{
      content:"+";
      margin-left:auto;
      color:var(--primary);
      font-size:20px;
    }
    .drawer-toggle.active::after{content:"−"}
    .drawer-submenu{
      max-height:0;
      padding:0 8px;
      overflow:hidden;
      background:#f6f8fc;
      border-radius:0 0 10px 10px;
      transition:max-height .3s ease,padding .3s ease;
    }
    .drawer-submenu.open{
      max-height:900px;
      padding:7px 8px;
    }
    .drawer-submenu a{
      display:block;
      padding:9px 12px;
      color:#5b6679;
      font-size:14px;
      border-radius:7px;
    }
    .drawer-submenu a:hover{
      color:var(--primary);
      background:#fff;
    }

    .ea-content-stack{
      min-width:0;
      padding:34px 0 76px;
      background:
        radial-gradient(circle at 90% 5%,rgba(215,154,43,.12),transparent 22%),
        linear-gradient(180deg,#f8faff 0,#f4f6fa 420px);
    }
    .ea-content-stack .breadcrumbs{
      margin-bottom:20px;
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:7px;
      color:#707b8e;
      font-size:14px;
    }
    .ea-content-stack .breadcrumbs a:hover{color:var(--primary)}
    .ea-content-stack .product-intro{
      min-width:0;
      padding:32px;
      display:grid;
      grid-template-columns:minmax(300px,460px) minmax(0,1fr);
      gap:42px;
      align-items:center;
      background:#fff;
      border:1px solid var(--line);
      border-radius:24px;
      box-shadow:var(--shadow);
    }
    .ea-content-stack .product-cover{
      position:relative;
      min-width:0;
      min-height:390px;
      padding:24px;
      display:flex;
      align-items:center;
      justify-content:center;
      overflow:hidden;
      background:
        linear-gradient(145deg,rgba(11,61,145,.96),rgba(7,32,75,.98)),
        #0B3D91;
      border-radius:19px;
    }
    .ea-content-stack .product-cover::before,
    .ea-content-stack .product-cover::after{
      content:"";
      position:absolute;
      border:1px solid rgba(255,255,255,.17);
      border-radius:50%;
    }
    .ea-content-stack .product-cover::before{
      width:280px;
      height:280px;
      top:-90px;
      right:-70px;
    }
    .ea-content-stack .product-cover::after{
      width:180px;
      height:180px;
      bottom:-65px;
      left:-45px;
    }
    .ea-content-stack .product-cover img{
      position:relative;
      z-index:1;
      width:100%;
      max-height:340px;
      object-fit:contain;
      border-radius:14px;
      filter:drop-shadow(0 18px 28px rgba(0,0,0,.24));
    }
    .ea-content-stack .product-overview{min-width:0}
    .ea-content-stack .eyebrow{
      margin:0 0 10px;
      color:var(--primary);
      font-size:14px;
      font-weight:800;
      letter-spacing:.08em;
    }
    .ea-content-stack .product-overview h1{
      margin:0;
      color:#13213a;
      font-size:clamp(30px,4vw,48px);
      line-height:1.2;
      overflow-wrap:anywhere;
    }
    .ea-content-stack .product-summary{
      margin:18px 0 22px;
      color:#566276;
      font-size:17px;
      line-height:1.85;
      overflow-wrap:anywhere;
    }
    .ea-content-stack .product-facts{
      margin:0 0 25px;
      padding:0;
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      list-style:none;
      border:1px solid var(--line);
      border-radius:14px;
      overflow:hidden;
    }
    .ea-content-stack .product-facts li{
      min-width:0;
      padding:13px 15px;
      background:#f8faff;
      border-right:1px solid var(--line);
    }
    .ea-content-stack .product-facts li:last-child{border-right:0}
    .ea-content-stack .product-facts span{
      display:block;
      color:#8490a3;
      font-size:12px;
    }
    .ea-content-stack .product-facts strong{
      display:block;
      margin-top:3px;
      color:#28364c;
      font-size:14px;
      overflow-wrap:anywhere;
    }
    .ea-content-stack .product-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
    }
    .ea-content-stack .primary-action,
    .ea-content-stack .secondary-action{
      min-height:48px;
      padding:11px 20px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      border-radius:10px;
      font-weight:800;
      transition:transform .2s ease,background .2s ease;
    }
    .ea-content-stack .primary-action{
      color:#fff;
      background:var(--primary);
      box-shadow:0 10px 24px rgba(11,61,145,.23);
    }
    .ea-content-stack .secondary-action{
      color:var(--primary);
      background:var(--primary-soft);
      border:1px solid #ccd9ed;
    }
    .ea-content-stack .primary-action:hover,
    .ea-content-stack .secondary-action:hover{transform:translateY(-2px)}
    .ea-content-stack .detail-layout{
      min-width:0;
      margin-top:28px;
      display:grid;
      grid-template-columns:minmax(0,1fr) 300px;
      gap:28px;
      align-items:start;
    }
    .ea-content-stack .content-panel,
    .ea-content-stack .side-panel{
      min-width:0;
      background:#fff;
      border:1px solid var(--line);
      border-radius:20px;
      box-shadow:0 12px 35px rgba(24,40,74,.06);
    }
    .ea-content-stack .content-panel{padding:32px}
    .ea-content-stack .section-heading{
      margin:0 0 22px;
      padding-bottom:14px;
      color:#182740;
      border-bottom:1px solid var(--line);
      font-size:24px;
      line-height:1.4;
    }
    .ea-content-stack .section-heading::after{
      content:"";
      width:52px;
      height:3px;
      margin-top:13px;
      display:block;
      background:linear-gradient(90deg,var(--primary),var(--accent));
      border-radius:5px;
    }
    .ea-content-stack .product-body{
      min-width:0;
      max-width:100%;
      overflow-x:auto;
      color:#3f4c60;
      font-size:16px;
      line-height:1.9;
      overflow-wrap:anywhere;
    }
    .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 img{
      height:auto;
      margin:22px auto;
      border-radius:12px;
    }
    .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(--line);
    }
    .ea-content-stack .product-body a{color:var(--primary);text-decoration:underline}
    .ea-content-stack .side-panel{
      position:sticky;
      top:20px;
      padding:24px;
    }
    .ea-content-stack .side-panel h2{
      margin:0 0 16px;
      color:#1c2a42;
      font-size:19px;
    }
    .ea-content-stack .side-list{
      margin:0;
      padding:0;
      list-style:none;
    }
    .ea-content-stack .side-list li{
      padding:12px 0;
      border-bottom:1px solid var(--line);
    }
    .ea-content-stack .side-list li:last-child{border-bottom:0}
    .ea-content-stack .side-list span{
      display:block;
      color:#8490a3;
      font-size:12px;
    }
    .ea-content-stack .side-list strong{
      display:block;
      margin-top:3px;
      color:#334057;
      font-size:14px;
      overflow-wrap:anywhere;
    }
    .ea-content-stack .risk-note{
      margin-top:20px;
      padding:16px;
      color:#73551e;
      background:var(--accent-soft);
      border:1px solid #f0d69c;
      border-radius:12px;
      font-size:13px;
      line-height:1.7;
    }
    .ea-content-stack .related-section{margin-top:48px}
    .ea-content-stack .related-head{
      margin-bottom:20px;
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:20px;
    }
    .ea-content-stack .related-head h2{
      margin:0;
      color:#17253d;
      font-size:28px;
    }
    .ea-content-stack .related-head p{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }
    .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(--line);
      border-radius:16px;
      box-shadow:0 10px 28px rgba(20,38,72,.06);
      transition:transform .2s ease,box-shadow .2s ease;
    }
    .ea-content-stack .related-card:hover{
      transform:translateY(-4px);
      box-shadow:0 18px 35px rgba(20,38,72,.11);
    }
    .ea-content-stack .related-image{
      height:180px;
      padding:16px;
      display:flex;
      align-items:center;
      justify-content:center;
      background:linear-gradient(145deg,#edf3fc,#f9fbff);
    }
    .ea-content-stack .related-image img{
      width:100%;
      height:100%;
      object-fit:contain;
      border-radius:10px;
    }
    .ea-content-stack .related-info{padding:18px}
    .ea-content-stack .related-info h3{
      margin:0;
      color:#202e45;
      font-size:17px;
      line-height:1.45;
      overflow-wrap:anywhere;
    }
    .ea-content-stack .related-info p{
      min-height:46px;
      margin:9px 0 13px;
      color:#657185;
      font-size:13px;
      line-height:1.7;
      display:-webkit-box;
      overflow:hidden;
      -webkit-line-clamp:2;
      -webkit-box-orient:vertical;
    }
    .ea-content-stack .related-meta{
      display:flex;
      justify-content:space-between;
      gap:10px;
      color:#8a95a7;
      font-size:12px;
    }

    .footer{
      color:#c9d4e7;
      background:#081a38;
    }
    .footer-main{
      padding:58px 0 42px;
      display:grid;
      grid-template-columns:1.4fr 1fr 1fr 1.15fr;
      gap:40px;
    }
    .footer .logo{
      color:#fff;
      margin-bottom:16px;
    }
    .footer-brand p,
    .footer-contact p{
      margin:8px 0;
      color:#aebbd1;
      font-size:14px;
    }
    .footer h3{
      margin:5px 0 18px;
      color:#fff;
      font-size:16px;
    }
    .footer-links{display:grid;gap:9px}
    .footer-links a,
    .footer-contact a{transition:color .2s ease}
    .footer-links a{
      color:#b6c3d8;
      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:24px;
      color:#93a3bc;
      border-top:1px solid rgba(255,255,255,.1);
      font-size:13px;
    }

    @media (max-width:1120px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-inner{min-height:72px}
      .header-btns{margin-left:auto}
      .ea-content-stack .product-intro{grid-template-columns:minmax(280px,390px) minmax(0,1fr)}
    }
    @media (max-width:900px){
      .ea-content-stack .product-intro{
        grid-template-columns:1fr;
        gap:28px;
      }
      .ea-content-stack .product-cover{min-height:330px}
      .ea-content-stack .detail-layout{grid-template-columns:1fr}
      .ea-content-stack .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-welcome{display:none}
      .topbar-inner{justify-content:center}
      .topbar-contact{
        width:100%;
        justify-content:space-between;
        gap:10px;
        font-size:12px;
      }
      .header .logo{min-width:0}
      .header .logo span{display:none}
      .header-btns>a:not(.account-btn){display:none}
      .account-btn{padding:9px 12px}
      .ea-content-stack{padding:22px 0 54px}
      .ea-content-stack .product-intro{padding:18px;border-radius:18px}
      .ea-content-stack .product-cover{min-height:260px;padding:18px}
      .ea-content-stack .product-overview h1{font-size:30px}
      .ea-content-stack .product-summary{font-size:15px}
      .ea-content-stack .product-facts{grid-template-columns:1fr}
      .ea-content-stack .product-facts li{
        border-right:0;
        border-bottom:1px solid var(--line);
      }
      .ea-content-stack .product-facts li:last-child{border-bottom:0}
      .ea-content-stack .product-actions{display:grid}
      .ea-content-stack .content-panel,
      .ea-content-stack .side-panel{padding:20px;border-radius:15px}
      .ea-content-stack .related-head{display:block}
      .ea-content-stack .related-head p{margin-top:6px}
      .ea-content-stack .related-grid{grid-template-columns:1fr}
      .footer-main{
        padding:42px 0 30px;
        grid-template-columns:1fr;
        gap:28px;
      }
      .footer-bottom{
        align-items:flex-start;
        flex-direction:column;
        gap:8px;
      }
    }