:root{
      --theme:#0B3D91;
      --theme-token:{主题色};
      --theme-dark:#06275f;
      --theme-light:#eaf2ff;
      --indigo:#091d45;
      --blue:#1464d2;
      --cyan:#38bdf8;
      --text:#172033;
      --muted:#667085;
      --line:#e3e9f2;
      --surface:#f5f8fc;
      --white:#fff;
      --success:#16815d;
      --shadow:0 18px 50px rgba(11,61,145,.12);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--text);
      background:#fff;
      font-family:"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",Arial,sans-serif;
      line-height:1.7;
    }
    body,button,input,textarea{font:inherit}
    img{display:block;max-width:100%}
    a{color:inherit;text-decoration:none}
    button{color:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}

    .topbar{
      position:relative;
      z-index:1002;
      color:#dbe8ff;
      background:var(--indigo);
      font-size:13px;
    }
    .topbar-inner{
      min-height:38px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
    }
    .topbar-right{display:flex;align-items:center;gap:22px}
    .topbar a{transition:color .2s ease}
    .topbar a:hover{color:#fff}

    .header{
      position:sticky;
      top:0;
      z-index:1000;
      border-bottom:1px solid rgba(11,61,145,.1);
      background:rgba(255,255,255,.97);
      box-shadow:0 4px 20px rgba(9,29,69,.04);
      backdrop-filter:blur(14px);
    }
    .header-inner{
      min-height:76px;
      display:flex;
      align-items:center;
      gap:24px;
    }
    .logo{
      min-width:190px;
      display:flex;
      align-items:center;
      gap:10px;
      color:var(--theme);
      font-size:20px;
      font-weight:800;
      letter-spacing:.02em;
    }
    .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;
      align-items:stretch;
      justify-content:center;
      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:#263653;
      font-size:15px;
      font-weight:650;
      white-space:nowrap;
      transition:color .2s ease;
    }
    .nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--theme)}
    .nav-link.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(-2px,-1px)}
    .nav-item::after{
      content:"";
      position:absolute;
      top:100%;
      left:0;
      right:0;
      height:14px;
    }
    .dropdown-panel,.mega-menu{
      position:absolute;
      top:100%;
      z-index:1010;
      visibility:hidden;
      opacity:0;
      pointer-events:none;
      border:1px solid #dfe7f2;
      background:#fff;
      box-shadow:0 24px 60px rgba(8,32,78,.16);
      transform:translateY(10px);
      transition:opacity .2s ease,transform .2s ease,visibility .2s ease;
    }
    .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:translateY(0);
    }
    .dropdown-panel{
      left:0;
      width:310px;
      padding:10px;
      border-radius:14px;
    }
    .dropdown-panel>a{
      display:block;
      padding:10px 12px;
      border-radius:9px;
      color:#34435d;
      font-size:14px;
    }
    .dropdown-panel>a:hover{color:var(--theme);background:var(--theme-light)}
    .mega-menu{
      left:50%;
      width:min(760px,75vw);
      padding:22px;
      border-radius:18px;
      transform:translate(-50%,10px);
    }
    .nav-item:hover>.mega-menu,
    .nav-item:focus-within>.mega-menu{transform:translate(-50%,0)}
    .nav-item:nth-last-child(-n+3) .mega-menu{
      left:auto;
      right:0;
      transform:translateY(10px);
    }
    .nav-item:nth-last-child(-n+3):hover>.mega-menu,
    .nav-item:nth-last-child(-n+3):focus-within>.mega-menu{transform:translateY(0)}
    .mega-heading{
      margin-bottom:16px;
      padding-bottom:12px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      border-bottom:1px solid var(--line);
    }
    .mega-heading strong{color:var(--indigo);font-size:17px}
    .mega-heading>a{color:var(--theme);font-size:13px;font-weight:700}
    .mega-grid{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:10px;
    }
    .mega-card{
      min-width:0;
      padding:10px;
      display:flex;
      align-items:center;
      gap:12px;
      border:1px solid transparent;
      border-radius:12px;
      transition:border-color .2s ease,background .2s ease,transform .2s ease;
    }
    .mega-card:hover{
      border-color:#cfe0fb;
      background:#f5f9ff;
      transform:translateY(-2px);
    }
    .mega-card img{
      width:48px;
      height:48px;
      flex:0 0 48px;
      object-fit:cover;
      border:1px solid #e4eaf2;
      border-radius:10px;
      background:#fff;
    }
    .mega-card span{min-width:0}
    .mega-card b{
      display:block;
      overflow:hidden;
      color:#1f2e48;
      font-size:14px;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .mega-card small{
      display:block;
      overflow:hidden;
      color:var(--muted);
      font-size:12px;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .mega-footer{
      margin-top:15px;
      padding-top:13px;
      display:block;
      border-top:1px solid var(--line);
      color:var(--theme);
      font-size:13px;
      font-weight:700;
    }
    .header-btns{
      margin-left:auto;
      display:flex;
      align-items:center;
      gap:9px;
      white-space:nowrap;
    }
    .member-link{
      color:var(--theme);
      font-size:14px;
      font-weight:700;
    }
    .open-account{
      padding:9px 17px;
      color:#fff;
      background:var(--theme);
      border-radius:9px;
      font-size:14px;
      font-weight:700;
      box-shadow:0 8px 20px rgba(11,61,145,.2);
      transition:background .2s ease,transform .2s ease;
    }
    .open-account:hover{background:var(--theme-dark);transform:translateY(-1px)}
    .hamburger{
      width:42px;
      height:42px;
      padding:9px;
      display:none;
      flex-direction:column;
      align-items:center;
      justify-content:center;
      gap:5px;
      border:1px solid var(--line);
      border-radius:10px;
      background:#fff;
      cursor:pointer;
    }
    .hamburger span{
      width:21px;
      height:2px;
      display:block;
      background:var(--indigo);
      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:1100;
      visibility:hidden;
      opacity:0;
      background:rgba(5,19,47,.58);
      transition:opacity .25s ease,visibility .25s ease;
    }
    .drawer-overlay.open{visibility:visible;opacity:1}
    .mobile-drawer{
      position:fixed;
      top:0;
      right:0;
      z-index:1101;
      width:min(390px,90vw);
      height:100vh;
      overflow-y:auto;
      background:#fff;
      box-shadow:-20px 0 60px rgba(5,19,47,.22);
      transform:translateX(105%);
      transition:transform .28s ease;
    }
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{
      min-height:72px;
      padding:14px 20px;
      display:flex;
      align-items:center;
      gap:14px;
      color:var(--theme);
      border-bottom:1px solid var(--line);
      font-weight:700;
    }
    .drawer-head>a{
      padding:7px 13px;
      color:#fff;
      background:var(--theme);
      border-radius:8px;
    }
    .drawer-close{
      width:40px;
      height:40px;
      margin-left:auto;
      border:0;
      background:transparent;
      color:#24334d;
      font-size:30px;
      line-height:1;
      cursor:pointer;
    }
    .drawer-menu{padding:12px 20px 30px}
    .drawer-link,.drawer-toggle{
      width:100%;
      min-height:48px;
      padding:11px 4px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      border:0;
      border-bottom:1px solid #edf1f6;
      background:transparent;
      color:#263653;
      text-align:left;
      font-weight:700;
      cursor:pointer;
    }
    .drawer-toggle::after{
      content:"+";
      color:var(--theme);
      font-size:20px;
      font-weight:400;
    }
    .drawer-toggle.active::after{content:"−"}
    .drawer-submenu{
      max-height:0;
      overflow:hidden;
      padding:0 10px;
      background:#f7f9fc;
      transition:max-height .3s ease,padding .3s ease;
    }
    .drawer-submenu.open{max-height:620px;padding:8px 10px}
    .drawer-submenu a{
      padding:9px 8px;
      display:block;
      color:#536078;
      border-bottom:1px dashed #dfe5ed;
      font-size:14px;
    }
    .drawer-submenu a:last-child{border-bottom:0}

    .ea-content-stack{
      min-height:600px;
      background:linear-gradient(180deg,#f2f7ff 0,#fff 420px);
    }
    .ea-content-stack .product-hero{
      padding:38px 0 28px;
      color:#fff;
      background:
        radial-gradient(circle at 14% 15%,rgba(56,189,248,.28),transparent 29%),
        linear-gradient(130deg,var(--indigo),var(--theme) 62%,#176dc5);
    }
    .ea-content-stack .breadcrumbs{
      margin-bottom:22px;
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:8px;
      color:#d5e5ff;
      font-size:13px;
    }
    .ea-content-stack .breadcrumbs a:hover{color:#fff}
    .ea-content-stack .product-intro{
      display:grid;
      grid-template-columns:minmax(290px,440px) minmax(0,1fr);
      align-items:center;
      gap:48px;
    }
    .ea-content-stack .product-cover{
      padding:18px;
      border:1px solid rgba(255,255,255,.24);
      border-radius:24px;
      background:rgba(255,255,255,.1);
      box-shadow:0 24px 55px rgba(2,14,39,.28);
      backdrop-filter:blur(8px);
    }
    .ea-content-stack .product-cover img{
      width:100%;
      aspect-ratio:16/10;
      object-fit:cover;
      border-radius:15px;
      background:#e8eef8;
    }
    .ea-content-stack .product-kicker{
      margin:0 0 8px;
      color:#aee6ff;
      font-size:13px;
      font-weight:800;
      letter-spacing:.16em;
    }
    .ea-content-stack .product-title{
      margin:0;
      color:#fff;
      font-size:clamp(32px,4vw,54px);
      line-height:1.15;
      letter-spacing:-.03em;
    }
    .ea-content-stack .product-summary{
      max-width:700px;
      margin:20px 0 0;
      color:#e0ebff;
      font-size:17px;
      line-height:1.9;
    }
    .ea-content-stack .product-meta{
      margin-top:24px;
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }
    .ea-content-stack .product-meta span{
      padding:7px 12px;
      border:1px solid rgba(255,255,255,.2);
      border-radius:999px;
      background:rgba(255,255,255,.1);
      color:#f4f8ff;
      font-size:13px;
    }
    .ea-content-stack .product-actions{
      margin-top:27px;
      display:flex;
      flex-wrap:wrap;
      gap:12px;
    }
    .ea-content-stack .primary-action,
    .ea-content-stack .secondary-action{
      min-height:48px;
      padding:11px 22px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      border-radius:11px;
      font-weight:800;
      transition:transform .2s ease,background .2s ease;
    }
    .ea-content-stack .primary-action{
      color:var(--theme);
      background:#fff;
      box-shadow:0 12px 28px rgba(2,14,39,.18);
    }
    .ea-content-stack .secondary-action{
      color:#fff;
      border:1px solid rgba(255,255,255,.42);
      background:rgba(255,255,255,.08);
    }
    .ea-content-stack .primary-action:hover,
    .ea-content-stack .secondary-action:hover{transform:translateY(-2px)}
    .ea-content-stack .product-layout{
      padding:42px 0 70px;
      display:grid;
      grid-template-columns:minmax(0,1fr) 310px;
      align-items:start;
      gap:28px;
    }
    .ea-content-stack .content-card,
    .ea-content-stack .side-card{
      min-width:0;
      border:1px solid var(--line);
      border-radius:var(--radius);
      background:#fff;
      box-shadow:var(--shadow);
    }
    .ea-content-stack .content-card{padding:clamp(22px,4vw,42px)}
    .ea-content-stack .section-heading{
      margin:0 0 24px;
      padding-bottom:15px;
      position:relative;
      color:var(--indigo);
      font-size:26px;
      line-height:1.35;
    }
    .ea-content-stack .section-heading::after{
      content:"";
      position:absolute;
      left:0;
      bottom:0;
      width:58px;
      height:4px;
      border-radius:99px;
      background:linear-gradient(90deg,var(--theme),var(--cyan));
    }
    .ea-content-stack .product-body{
      min-width:0;
      max-width:100%;
      overflow-x:auto;
      color:#34425a;
      font-size:16px;
      line-height:1.95;
      overflow-wrap:anywhere;
    }
    .ea-content-stack .product-body img,
    .ea-content-stack .product-body video,
    .ea-content-stack .product-body iframe{
      max-width:100%;
      height:auto;
      border-radius:12px;
    }
    .ea-content-stack .product-body table{
      width:100%;
      max-width:100%;
      border-collapse:collapse;
    }
    .ea-content-stack .product-body th,
    .ea-content-stack .product-body td{
      padding:10px 12px;
      border:1px solid var(--line);
      text-align:left;
    }
    .ea-content-stack .product-body h2,
    .ea-content-stack .product-body h3{color:var(--indigo);line-height:1.4}
    .ea-content-stack .product-body a{color:var(--theme);text-decoration:underline}
    .ea-content-stack .product-note{
      margin-top:30px;
      padding:16px 18px;
      border-left:4px solid var(--theme);
      border-radius:0 10px 10px 0;
      background:var(--theme-light);
      color:#40516d;
      font-size:14px;
    }
    .ea-content-stack .product-sidebar{
      position:sticky;
      top:100px;
      display:grid;
      gap:20px;
    }
    .ea-content-stack .side-card{padding:22px}
    .ea-content-stack .side-card h2{
      margin:0 0 16px;
      color:var(--indigo);
      font-size:19px;
    }
    .ea-content-stack .info-list{
      margin:0;
      display:grid;
      gap:0;
    }
    .ea-content-stack .info-row{
      padding:11px 0;
      display:flex;
      justify-content:space-between;
      gap:15px;
      border-bottom:1px solid #edf1f6;
      font-size:14px;
    }
    .ea-content-stack .info-row:last-child{border-bottom:0}
    .ea-content-stack .info-row dt{color:var(--muted)}
    .ea-content-stack .info-row dd{
      margin:0;
      color:#273650;
      font-weight:700;
      text-align:right;
    }
    .ea-content-stack .side-cta{
      padding:24px;
      color:#fff;
      border:0;
      background:linear-gradient(145deg,var(--theme),var(--indigo));
    }
    .ea-content-stack .side-cta h2{color:#fff}
    .ea-content-stack .side-cta p{
      margin:0 0 17px;
      color:#dce9ff;
      font-size:14px;
    }
    .ea-content-stack .side-cta a{
      padding:10px 16px;
      display:inline-flex;
      border-radius:9px;
      color:var(--theme);
      background:#fff;
      font-weight:800;
    }
    .ea-content-stack .related-section{
      padding:62px 0 74px;
      background:var(--surface);
      border-top:1px solid var(--line);
    }
    .ea-content-stack .related-head{
      margin-bottom:24px;
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:20px;
    }
    .ea-content-stack .related-head h2{
      margin:0;
      color:var(--indigo);
      font-size:30px;
    }
    .ea-content-stack .related-head p{margin:5px 0 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-product{
      min-width:0;
      overflow:hidden;
      border:1px solid var(--line);
      border-radius:16px;
      background:#fff;
      box-shadow:0 12px 32px rgba(11,61,145,.08);
      transition:transform .2s ease,box-shadow .2s ease;
    }
    .ea-content-stack .related-product:hover{
      transform:translateY(-5px);
      box-shadow:0 20px 42px rgba(11,61,145,.14);
    }
    .ea-content-stack .related-product img{
      width:100%;
      aspect-ratio:16/9;
      object-fit:cover;
      background:#e8eef7;
    }
    .ea-content-stack .related-product-body{padding:18px}
    .ea-content-stack .related-product h3{
      margin:0 0 9px;
      color:var(--indigo);
      font-size:18px;
      line-height:1.45;
    }
    .ea-content-stack .related-product p{
      min-height:52px;
      margin:0;
      display:-webkit-box;
      overflow:hidden;
      color:var(--muted);
      font-size:14px;
      -webkit-box-orient:vertical;
      -webkit-line-clamp:2;
    }
    .ea-content-stack .related-meta{
      margin-top:14px;
      display:flex;
      justify-content:space-between;
      gap:10px;
      color:#7a8699;
      font-size:12px;
    }

    .footer{
      padding:58px 0 0;
      color:#cbd7eb;
      background:var(--indigo);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.45fr 1fr 1fr 1fr;
      gap:42px;
    }
    .footer-brand{
      margin-bottom:14px;
      color:#fff;
      font-size:24px;
      font-weight:850;
    }
    .footer p{margin:7px 0;color:#aebdd4;font-size:14px}
    .footer h3{
      margin:0 0 16px;
      color:#fff;
      font-size:16px;
    }
    .footer-grid>div>a{
      margin:8px 0;
      display:block;
      color:#b9c7da;
      font-size:14px;
      transition:color .2s ease,transform .2s ease;
    }
    .footer-grid>div>a:hover{color:#fff;transform:translateX(3px)}
    .footer-bottom{
      margin-top:42px;
      padding:20px 0;
      border-top:1px solid rgba(255,255,255,.12);
      color:#9eacc1;
      font-size:13px;
      text-align:center;
    }

    @media (max-width:1080px){
      .main-nav{display:none}
      .hamburger{display:flex}
      .header-inner{min-height:70px}
      .header-btns{margin-left:auto}
      .ea-content-stack .product-layout{grid-template-columns:minmax(0,1fr) 280px}
    }
    @media (max-width:860px){
      .topbar-inner{padding:7px 0;align-items:flex-start}
      .topbar-right{gap:10px;flex-direction:column}
      .ea-content-stack .product-intro{grid-template-columns:1fr;gap:28px}
      .ea-content-stack .product-cover{max-width:580px}
      .ea-content-stack .product-layout{grid-template-columns:1fr}
      .ea-content-stack .product-sidebar{position:static;grid-template-columns:repeat(2,minmax(0,1fr))}
      .ea-content-stack .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    }
    @media (max-width:620px){
      .container{width:min(100% - 28px,1180px)}
      .topbar-inner{display:block;padding:8px 0}
      .topbar-right{margin-top:3px;display:flex;align-items:flex-start}
      .logo{min-width:0;font-size:17px}
      .logo img{width:37px;height:37px}
      .member-link{display:none}
      .open-account{padding:8px 12px}
      .header-inner{gap:10px}
      .ea-content-stack .product-hero{padding:28px 0}
      .ea-content-stack .product-title{font-size:34px}
      .ea-content-stack .product-summary{font-size:15px}
      .ea-content-stack .product-actions{display:grid}
      .ea-content-stack .product-layout{padding:28px 0 52px}
      .ea-content-stack .content-card{padding:20px 17px}
      .ea-content-stack .product-sidebar{grid-template-columns:1fr}
      .ea-content-stack .related-section{padding:48px 0 58px}
      .ea-content-stack .related-grid{grid-template-columns:1fr}
      .ea-content-stack .related-head{align-items:flex-start;flex-direction:column}
      .footer-grid{grid-template-columns:1fr;gap:28px}
      .footer{padding-top:44px}
    }