:root{--theme:#0B3D91;--ink:#172033;--muted:#667085;--line:#e6eaf0;--paper:#f6f8fb;--gold:#e5a93d;--radius:18px}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:var(--paper);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button{font:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:auto}
    .topbar{background:#101b32;color:#cbd5e1;font-size:13px}
    .topbar-inner{height:38px;display:flex;align-items:center;justify-content:space-between}
    .topbar-links{display:flex;gap:24px}
    .topbar a:hover{color:#fff}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{height:76px;display:flex;align-items:center;gap:32px}
    .logo{display:flex;align-items:center;gap:10px;min-width:190px;font-weight:800;color:var(--theme);font-size:18px}
    .logo img{width:36px;height:36px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:stretch;justify-content:center;gap:4px;list-style:none;margin:0;padding:0;height:76px}
    .nav-item{position:relative;display:flex;align-items:center}
    .nav-link{padding:25px 14px;color:#344054;font-size:15px;white-space:nowrap}
    .nav-link:hover,.nav-link:focus{color:var(--theme)}
    .has-arrow:after{content:"";display:inline-block;width:6px;height:6px;margin:0 0 3px 8px;border-right:1px solid;border-bottom:1px solid;transform:rotate(45deg)}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% - 1px);left:50%;transform:translateX(-50%);visibility:hidden;opacity:0;transition:.2s ease;background:#fff;border:1px solid var(--line);box-shadow:0 18px 45px #1720331c;border-radius:0 0 16px 16px}
    .dropdown-panel{width:300px;padding:20px}
    .mega-menu{width:min(780px,calc(100vw - 32px));padding:25px}
    .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}
    .nav-item>.dropdown-panel:before,.nav-item>.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-14px;height:14px}
    .dropdown-title,.mega-title{margin:0 0 12px;color:var(--theme);font-weight:800;font-size:14px}
    .dropdown-list,.mega-links{display:grid;gap:8px}
    .dropdown-list a,.mega-links a{padding:7px 0;color:#475467;font-size:14px}
    .dropdown-list a:hover,.mega-links a:hover{color:var(--theme)}
    .mega-grid{display:grid;grid-template-columns:190px 1fr;gap:26px}
    .mega-cards{display:grid;grid-template-columns:1fr 1fr;gap:10px}
    .mega-card{display:flex;gap:9px;padding:9px;border:1px solid var(--line);border-radius:10px;min-width:0}
    .mega-card:hover{border-color:#9bb2d8;background:#f7faff}
    .mega-card img{width:34px;height:34px;object-fit:cover;border-radius:7px;flex:0 0 auto}
    .mega-card>span{display:grid;min-width:0;font-size:11px;color:var(--muted);line-height:1.45}
    .mega-card strong{font-size:12px;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .mega-footer{display:block;margin-top:16px;padding-top:13px;border-top:1px solid var(--line);color:var(--theme);font-weight:700;font-size:13px}
    .header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}
    .member-link{color:var(--theme);font-size:14px;font-weight:700}
    .account-link{padding:9px 16px;border-radius:9px;background:var(--theme);color:#fff;font-size:13px;font-weight:700}
    .hamburger{display:none;border:0;background:transparent;padding:8px;cursor:pointer}
    .hamburger span{display:block;width:23px;height:2px;background:var(--ink);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:#07122599;opacity:0;visibility:hidden;transition:.25s;z-index:40}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:0;bottom:0;width:min(380px,88vw);background:#fff;transform:translateX(100%);transition:.25s;z-index:41;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{height:70px;padding:0 20px;display:flex;align-items:center;gap:16px;border-bottom:1px solid var(--line);font-weight:800;color:var(--theme)}
    .drawer-head a{margin-left:auto;color:var(--theme)}
    .drawer-close{border:0;background:none;font-size:30px;line-height:1;color:#667085;cursor:pointer}
    .drawer-menu{padding:12px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 2px;text-align:left;border:0;border-bottom:1px solid var(--line);background:none;color:var(--ink);font-weight:700;cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--theme);font-size:20px}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:none;padding:5px 0 8px 15px}
    .drawer-submenu.open{display:grid}
    .drawer-submenu a{padding:8px 0;color:var(--muted);font-size:14px}
    .footer{margin-top:70px;background:#101b32;color:#cbd5e1;padding:52px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px}
    .footer-brand strong{color:#fff;font-size:20px}
    .footer-brand p{max-width:300px;color:#9aa8bd;font-size:13px}
    .footer h3{margin:0 0 13px;color:#fff;font-size:15px}
    .footer-links{display:grid;gap:7px;font-size:13px;color:#9aa8bd}
    .footer-links a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:38px;padding-top:18px;border-top:1px solid #ffffff1a;color:#8694aa;font-size:12px}
    .productlist-main,.ea-content-stack{min-width:0}
    .ea-content-stack{padding:56px 0 10px}
    .product-crumb{margin-bottom:24px;color:var(--muted);font-size:13px}
    .product-crumb a{color:var(--theme)}
    .product-hero{display:grid;grid-template-columns:minmax(280px,390px) minmax(0,1fr);gap:48px;align-items:center;padding:35px;background:#fff;border:1px solid var(--line);border-radius:24px;box-shadow:0 12px 35px #1720330a}
    .product-cover{min-height:270px;display:grid;place-items:center;border-radius:18px;background:linear-gradient(145deg,#eef4ff,#dce8fa);padding:28px}
    .product-cover img{max-height:260px;object-fit:contain;border-radius:12px}
    .product-kicker{display:inline-flex;padding:5px 11px;border-radius:30px;background:#eaf1fc;color:var(--theme);font-size:12px;font-weight:700}
    .product-title{margin:13px 0 8px;font-size:clamp(28px,4vw,46px);line-height:1.2;letter-spacing:-.04em}
    .product-summary{margin:0;color:var(--muted);font-size:16px}
    .product-meta{display:flex;flex-wrap:wrap;gap:18px;margin:22px 0;color:#667085;font-size:13px}
    .product-meta strong{color:var(--ink)}
    .product-action{display:inline-block;padding:12px 22px;border-radius:9px;background:var(--theme);color:#fff;font-weight:700}
    .product-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:28px;margin-top:30px;align-items:start}
    .product-panel,.related-products{background:#fff;border:1px solid var(--line);border-radius:18px;padding:28px}
    .product-panel h2,.related-products h2{margin:0 0 20px;font-size:22px}
    .product-body{min-width:0;max-width:100%;overflow-x:auto;color:#475467}
    .product-body img,.product-body table{max-width:100%}
    .product-body h2,.product-body h3{color:var(--ink)}
    .product-body a{color:var(--theme);text-decoration:underline}
    .related-products{display:grid;gap:14px}
    .related-card{display:grid;grid-template-columns:65px 1fr;gap:12px;padding-bottom:14px;border-bottom:1px solid var(--line)}
    .related-card:last-child{border-bottom:0;padding-bottom:0}
    .related-card img{width:65px;height:65px;object-fit:cover;border-radius:10px;background:#edf2f8}
    .related-card strong{font-size:14px;line-height:1.4}
    .related-card p{margin:4px 0 0;color:var(--muted);font-size:12px;line-height:1.5}
    @media(max-width:980px){.main-nav{display:none}.hamburger{display:block}.header-inner{justify-content:space-between}.footer-grid{grid-template-columns:1fr 1fr}.product-layout{grid-template-columns:1fr}}
    @media(max-width:640px){.container{width:min(100% - 28px,1180px)}.topbar-inner{height:auto;min-height:38px;padding:7px 0;gap:10px;align-items:flex-start}.topbar-links{gap:9px;flex-direction:column;text-align:right}.header-inner{height:68px;gap:10px}.logo{min-width:0}.member-link{display:none}.account-link{padding:8px 10px;font-size:12px}.product-hero{grid-template-columns:1fr;gap:24px;padding:20px}.product-cover{min-height:190px}.product-layout{margin-top:18px}.product-panel,.related-products{padding:20px}.footer-grid{grid-template-columns:1fr 1fr;gap:25px}.footer-bottom{display:grid;gap:8px}.mega-grid{grid-template-columns:1fr}.mega-cards{grid-template-columns:1fr}}