:root{--primary:#0B3D91;--ink:#172033;--muted:#657188;--line:#e5eaf1;--bg:#f5f7fb;--white:#fff}
*{box-sizing:border-box}html,body{margin:0;padding:0;color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;background:var(--bg);line-height:1.7}a{color:inherit;text-decoration:none}.container{width:min(1180px,92%);margin:auto}
.topbar{background:#10233f;color:#dfe9f7;font-size:13px}.topbar .container{height:36px;display:flex;align-items:center;justify-content:space-between}.topbar-links{display:flex;gap:22px}.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:32px}.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--primary);white-space:nowrap}.logo img{width:34px;height:34px;object-fit:contain}.main-nav{margin-left:auto}.nav-list{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}.nav-item{position:relative}.nav-link{display:block;padding:25px 13px;font-size:15px;font-weight:600}.nav-link:hover{color:var(--primary)}.has-arrow:after{content:"⌄";font-size:12px;margin-left:6px}.dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);background:#fff;border:1px solid var(--line);border-radius:0 0 12px 12px;box-shadow:0 16px 40px #19345b1c;opacity:0;visibility:hidden;transition:.2s;z-index:30}.dropdown-panel{width:250px;padding:12px}.dropdown-panel a{display:block;padding:9px 12px;border-radius:7px;font-size:14px}.dropdown-panel a:hover,.mega-card:hover{background:#eef4ff;color:var(--primary)}.mega-menu{width:650px;padding:20px}.nav-item:hover>.dropdown-panel,.nav-item:focus-within>.dropdown-panel,.nav-item:hover>.mega-menu,.nav-item:focus-within>.mega-menu{opacity:1;visibility:visible}.mega-menu:before{content:"";position:absolute;top:-14px;left:0;right:0;height:14px}.mega-title{margin:0 0 12px;font-size:13px;color:var(--primary);font-weight:800}.mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.mega-card{display:block;padding:11px;border:1px solid var(--line);border-radius:9px;font-size:12px;min-height:58px}.mega-card strong{font-size:13px}.mega-card span{color:var(--muted)}.mega-card img{width:22px;height:22px;object-fit:contain;vertical-align:middle;margin-right:5px}.mega-footer{display:block;color:var(--primary);font-size:13px;font-weight:700;margin-top:15px}.header-btns{display:flex;align-items:center;gap:9px}.member-btn,.account-btn{border-radius:7px;padding:8px 13px;font-size:13px;font-weight:700}.member-btn{color:var(--primary);background:#edf3ff}.account-btn{background:var(--primary);color:#fff}.hamburger{display:none;width:42px;height:38px;border:1px solid var(--line);background:#fff;border-radius:7px;padding:8px}.hamburger span{display:block;height:2px;background:var(--primary);margin:5px 0}.drawer-overlay{display:none;position:fixed;inset:0;background:#06152c99;z-index:50}.drawer-overlay.open{display:block}.mobile-drawer{position:fixed;right:-340px;top:0;bottom:0;width:min(340px,88%);background:#fff;z-index:60;transition:.25s;overflow:auto}.mobile-drawer.open{right:0}.drawer-head{height:68px;display:flex;align-items:center;gap:15px;padding:0 20px;border-bottom:1px solid var(--line);font-weight:800}.drawer-head a{margin-left:auto;color:var(--primary)}.drawer-close{font-size:27px;border:0;background:none;color:var(--muted)}.drawer-menu{padding:12px 20px}.drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;font:inherit}.drawer-toggle:after{content:"＋";float:right;color:var(--primary)}.drawer-toggle.active:after{content:"－"}.drawer-submenu{display:none;padding:5px 0 8px 14px}.drawer-submenu.open{display:block}.drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:14px}
.ea-content-stack{padding:42px 0 72px}.product-breadcrumb{font-size:13px;color:var(--muted);margin-bottom:22px}.product-breadcrumb a{color:var(--primary)}.product-head{background:#fff;border:1px solid var(--line);border-radius:18px;padding:30px;display:grid;grid-template-columns:minmax(230px,350px) 1fr;gap:36px;align-items:center}.product-image{min-height:250px;border-radius:14px;background:#f2f6fc;display:flex;align-items:center;justify-content:center;padding:20px}.product-image img{max-width:100%;max-height:260px;object-fit:contain}.product-title{margin:0 0 10px;font-size:clamp(28px,4vw,46px);line-height:1.2}.product-summary{color:var(--muted);font-size:16px;margin:0 0 20px}.product-meta{display:flex;flex-wrap:wrap;gap:10px 18px;color:var(--muted);font-size:13px;border-top:1px solid var(--line);padding-top:16px}.product-meta b{color:var(--ink)}.product-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:26px;margin-top:28px}.product-panel,.related-products{background:#fff;border:1px solid var(--line);border-radius:16px;padding:26px}.product-panel h2,.related-products h2{font-size:22px;margin:0 0 18px;padding-left:13px;border-left:4px solid var(--primary)}.product-body{min-width:0;max-width:100%;overflow-x:auto;color:#39465a}.product-body img{max-width:100%;height:auto}.product-body table{max-width:100%;display:block;overflow-x:auto;border-collapse:collapse}.product-body p{margin:0 0 16px}.product-body a{color:var(--primary)}.related-item{display:flex;gap:12px;padding:13px 0;border-bottom:1px solid var(--line)}.related-item:last-child{border-bottom:0}.related-item img{width:64px;height:64px;border-radius:9px;object-fit:cover;background:#f1f4f8}.related-item strong{font-size:14px;display:block}.related-item p{font-size:12px;color:var(--muted);margin:3px 0 0;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.footer{background:#10233f;color:#cbd7e7;padding:48px 0 20px}.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px}.footer h3,.footer h4{color:#fff;margin:0 0 14px}.footer p{font-size:13px;margin:7px 0}.footer a{display:block;color:#cbd7e7;font-size:13px;margin:7px 0}.footer a:hover{color:#fff}.footer-bottom{border-top:1px solid #ffffff22;margin-top:28px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;font-size:12px;color:#9eafc7}
@media(max-width:980px){.main-nav{display:none}.header-btns{margin-left:auto}.hamburger{display:block}.product-head{grid-template-columns:1fr}.product-image{min-height:190px}.product-layout{grid-template-columns:1fr}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.topbar .container{height:auto;min-height:36px;padding:7px 0;align-items:flex-start;gap:5px;flex-direction:column}.topbar-links{gap:12px}.account-btn{display:none}.header-inner{min-height:66px}.logo{font-size:17px}.logo img{width:29px;height:29px}.ea-content-stack{padding:25px 0 45px}.product-head,.product-panel,.related-products{padding:19px}.product-title{font-size:30px}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:8px}}