:root{--blue:#0B3D91;--ink:#172033;--muted:#687386;--line:#e5e9f0;--bg:#f5f7fb;--card:#fff}
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:var(--bg);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.7}a{color:inherit;text-decoration:none}.container{width:min(1180px,calc(100% - 40px));margin:auto}
    .topbar{background:#10223f;color:#dce7f8;font-size:13px}.topbar .container{height:36px;display:flex;align-items:center;justify-content:space-between}.topbar a{margin-left:20px;color:#fff}
    .header{background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:20}.header-inner{min-height:76px;display:flex;align-items:center;gap:28px}.logo{display:flex;align-items:center;gap:10px;white-space:nowrap;font-weight:800;font-size:20px;color:var(--blue)}.logo img{width:38px;height:38px;object-fit:contain}.main-nav{flex:1}.nav-list{display:flex;justify-content:center;align-items:stretch;gap:4px;list-style:none;margin:0;padding:0}.nav-item{position:relative}.nav-link{display:block;padding:24px 13px;font-size:15px;color:#26344d}.nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--blue)}.has-arrow:after{content:"⌄";font-size:12px;margin-left:6px;color:#8490a2}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);width:330px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:0 0 12px 12px;box-shadow:0 16px 40px #12244b1c;opacity:0;visibility:hidden;transition:.2s;z-index:30}.mega-menu{width:650px}.nav-item:hover>.dropdown-panel,.nav-item:hover>.mega-menu,.nav-item:focus-within>.dropdown-panel,.nav-item:focus-within>.mega-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}.dropdown-panel:before,.mega-menu:before{content:"";position:absolute;top:-14px;left:0;right:0;height:14px}.panel-title{margin:0 0 12px;color:var(--blue);font-size:16px}.panel-list{display:grid;gap:7px}.panel-list a{padding:7px 0;border-bottom:1px solid #eef1f5;color:#3b475b;font-size:14px}.mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.mega-card{display:flex;flex-direction:column;gap:3px;padding:10px;border:1px solid var(--line);border-radius:8px;background:#fbfcfe}.mega-card:hover{border-color:var(--blue);background:#f1f5ff}.mega-card img{width:28px;height:28px;object-fit:contain}.mega-card strong{font-size:13px}.mega-card small{font-size:11px;color:var(--muted);line-height:1.5}.mega-footer{display:block;margin-top:15px;color:var(--blue);font-size:13px;font-weight:700}
    .header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}.member-link{font-size:13px;color:var(--blue)}.open-account{background:var(--blue);color:#fff;border-radius:5px;padding:8px 15px;font-size:13px}.hamburger{display:none;border:0;background:none;padding:8px;cursor:pointer}.hamburger span{display:block;width:24px;height:2px;background:var(--blue);margin:5px 0;transition:.2s}.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;background:#07152b99;opacity:0;visibility:hidden;transition:.25s;z-index:40}.drawer-overlay.open{opacity:1;visibility:visible}.mobile-drawer{position:fixed;top:0;right:0;width:min(380px,88vw);height:100vh;background:#fff;z-index:41;transform:translateX(100%);transition:.25s;overflow:auto}.mobile-drawer.open{transform:translateX(0)}.drawer-head{height:70px;padding:0 20px;display:flex;align-items:center;gap:15px;border-bottom:1px solid var(--line);font-weight:700}.drawer-head span{flex:1}.drawer-head a{color:var(--blue);font-size:14px}.drawer-close{border:0;background:none;font-size:28px;color:#687386;cursor:pointer}.drawer-menu{padding:12px 20px}.drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid #eef1f5;background:none;text-align:left;font:inherit;color:var(--ink);cursor:pointer}.drawer-toggle:after{content:"＋";float:right;color:var(--blue)}.drawer-toggle.active:after{content:"－"}.drawer-submenu{display:none;padding:4px 0 8px 15px}.drawer-submenu.open{display:block}.drawer-submenu a{display:block;padding:7px 0;color:var(--muted);font-size:14px}
    .product-hero{padding:52px 0 34px;background:linear-gradient(135deg,#edf3ff,#fff)}.crumbs{font-size:13px;color:var(--muted);margin-bottom:25px}.crumbs a{color:var(--blue)}.product-heading{display:grid;grid-template-columns:180px 1fr;gap:30px;align-items:center}.product-image{width:180px;height:180px;border-radius:18px;background:#fff;border:1px solid var(--line);padding:20px;object-fit:contain;box-shadow:0 12px 30px #0b3d9112}.product-heading h1{margin:0 0 10px;font-size:clamp(28px,4vw,44px);line-height:1.2;color:#13284e}.product-summary{margin:0;color:var(--muted);font-size:17px;max-width:760px}.product-meta{display:flex;gap:22px;flex-wrap:wrap;margin-top:18px;color:#60708a;font-size:13px}.product-meta strong{color:var(--ink)}
    .ea-content-stack{padding:36px 0 76px}.product-layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:28px;align-items:start}.product-content,.product-sidebar{background:var(--card);border:1px solid var(--line);border-radius:12px}.product-content{padding:30px;min-width:0;max-width:100%;overflow-x:auto}.product-content h2{margin:0 0 20px;padding-bottom:13px;border-bottom:2px solid var(--blue);font-size:22px}.product-body{min-width:0;max-width:100%;overflow-x:auto;color:#435066}.product-body img,.product-body table{max-width:100%;height:auto}.product-body table{border-collapse:collapse}.product-body td,.product-body th{border:1px solid var(--line);padding:8px}.product-sidebar{padding:22px;position:sticky;top:20px}.product-sidebar h2{font-size:18px;margin:0 0 15px;color:var(--blue)}.related-product{display:block;padding:13px 0;border-bottom:1px solid var(--line)}.related-product:last-child{border-bottom:0}.related-product img{width:48px;height:48px;object-fit:contain;float:left;margin-right:10px}.related-product strong{display:block;font-size:14px}.related-product small{display:block;color:var(--muted);font-size:12px;line-height:1.5}.product-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.product-actions a{display:inline-block;padding:10px 20px;border-radius:5px;background:var(--blue);color:#fff;font-size:14px}.product-actions a.secondary{background:#eaf0fb;color:var(--blue)}
    .footer{background:#10223f;color:#dce5f3;padding:48px 0 20px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:35px}.footer-brand{display:flex;align-items:center;gap:9px;color:#fff;font-weight:700;font-size:18px}.footer-brand img{width:34px;height:34px;object-fit:contain}.footer p{color:#aebbd0;font-size:13px}.footer h3{margin:0 0 15px;color:#fff;font-size:15px}.footer-links{display:grid;gap:8px}.footer-links a{color:#b6c4d8;font-size:13px}.footer-links a:hover{color:#fff}.footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #ffffff1c;margin-top:35px;padding-top:18px;color:#91a2bb;font-size:12px}
    @media(max-width:900px){.main-nav{display:none}.hamburger{display:block}.header-btns{margin-left:auto}.product-layout{grid-template-columns:1fr}.product-sidebar{position:static}.footer-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:600px){.container{width:min(100% - 28px,1180px)}.topbar .container{height:auto;padding:8px 0;display:block}.topbar .container>span{display:block}.topbar a{margin:0 15px 0 0}.header-inner{min-height:66px;gap:10px}.member-link{display:none}.open-account{padding:7px 10px}.mega-menu,.dropdown-panel{display:none}.product-hero{padding:30px 0 25px}.product-heading{grid-template-columns:1fr;text-align:center;gap:18px}.product-image{margin:auto;width:135px;height:135px}.product-summary{font-size:15px}.product-meta{justify-content:center;gap:12px}.product-content{padding:20px}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:6px}.mega-grid{grid-template-columns:1fr 1fr}}