:root{--theme:#0B3D91;--ink:#17243d;--muted:#68758b;--line:#e5eaf2;--soft:#f4f7fb;--white:#fff;--shadow:0 16px 42px rgba(25,48,85,.10)}
    *{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",Arial,sans-serif;background:#f7f9fc;line-height:1.7}a{color:inherit;text-decoration:none}.container{width:min(1180px,calc(100% - 40px));margin:auto}
    .topbar{background:#102b58;color:#dbe7f8;font-size:13px}.topbar .container{height:38px;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{height:78px;display:flex;align-items:center;gap:34px}.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;white-space:nowrap;color:var(--theme)}.logo img{width:36px;height:36px;object-fit:contain}.main-nav{flex:1}.nav-list{display:flex;justify-content:center;align-items:center;gap:4px;list-style:none;margin:0;padding:0}.nav-item{position:relative}.nav-link{display:block;padding:27px 14px;font-size:15px;font-weight:600;color:#263650}.nav-link:hover,.nav-link:focus{color:var(--theme)}.has-arrow:after{content:"⌄";font-size:12px;margin-left:6px;color:#8b98aa}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translateX(-50%) translateY(8px);width:260px;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:var(--shadow);padding:16px;opacity:0;visibility:hidden;transition:.2s;z-index:30}.mega-menu{width:650px}.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;transform:translateX(-50%) translateY(0)}.dropdown-panel:before,.mega-menu:before{content:"";position:absolute;top:-12px;left:0;right:0;height:12px}.dropdown-panel>a{display:block;padding:8px 10px;border-radius:8px;font-size:14px}.dropdown-panel>a:hover{background:var(--soft);color:var(--theme)}.mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.mega-card{display:block;min-height:90px;padding:11px;border:1px solid var(--line);border-radius:10px;background:#fbfcfe}.mega-card:hover{border-color:#a9c0e8;background:#f2f6fd}.mega-card img{width:30px;height:30px;object-fit:contain;display:block;margin-bottom:5px}.mega-card strong,.mega-card small{display:block}.mega-card strong{font-size:13px}.mega-card small{color:var(--muted);font-size:11px;line-height:1.45;margin-top:3px}.mega-footer{display:block;text-align:center;color:var(--theme);font-weight:700;font-size:13px;margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}
    .header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}.member-link{font-size:13px;color:var(--theme);font-weight:700}.open-account{background:var(--theme);color:#fff;padding:9px 16px;border-radius:8px;font-size:13px;font-weight:700}.hamburger{display:none;width:42px;height:40px;border:1px solid var(--line);border-radius:8px;background:#fff;padding:9px}.hamburger span{height:2px;background:var(--theme);display:block;margin:5px 0;transition:.2s}
    .drawer-overlay{display:none;position:fixed;inset:0;background:rgba(10,25,48,.48);z-index:50}.drawer-overlay.open{display:block}.mobile-drawer{position:fixed;right:-360px;top:0;width:min(350px,88vw);height:100vh;background:#fff;z-index:60;transition:right .25s;overflow:auto;box-shadow:-10px 0 30px rgba(0,0,0,.15)}.mobile-drawer.open{right:0}.drawer-head{height:72px;display:flex;align-items:center;gap:14px;padding:0 20px;border-bottom:1px solid var(--line);font-weight:800;color:var(--theme)}.drawer-head>a{margin-left:auto;color:var(--theme);font-size:14px}.drawer-close{border:0;background:none;font-size:28px;color:#53627a;cursor:pointer}.drawer-menu{padding:14px 20px}.drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid #edf0f5;background:transparent;text-align:left;font:inherit;color:var(--ink);cursor:pointer}.drawer-toggle:after{content:"＋";float:right;color:var(--theme)}.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:7px 0;color:var(--muted);font-size:14px}
    .ea-content-stack{padding:42px 0 76px}.breadcrumb{font-size:13px;color:var(--muted);margin-bottom:22px}.breadcrumb a{color:var(--theme)}.product-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:28px;align-items:start}.product-main,.product-aside{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 10px 30px rgba(35,57,90,.06)}.product-main{padding:32px}.product-heading{display:grid;grid-template-columns:190px minmax(0,1fr);gap:28px;align-items:center;padding-bottom:28px;border-bottom:1px solid var(--line)}.product-cover{width:190px;height:150px;border-radius:14px;background:#edf3fb;object-fit:contain;padding:14px}.product-heading h1{font-size:clamp(28px,4vw,44px);line-height:1.2;margin:0 0 12px;color:#132b55}.product-summary{font-size:17px;color:var(--muted);margin:0}.product-meta{display:flex;flex-wrap:wrap;gap:16px;margin-top:18px;color:#6b7890;font-size:13px}.product-body{min-width:0;max-width:100%;overflow-x:auto;padding-top:28px}.product-body img,.product-body video{max-width:100%;height:auto}.product-body table{max-width:100%;display:block;overflow-x:auto;border-collapse:collapse}.product-body h2,.product-body h3{color:#173b78}.product-body p{margin:0 0 16px}.product-aside{padding:24px;position:sticky;top:20px}.product-aside h2{font-size:19px;margin:0 0 15px}.related-product{display:grid;grid-template-columns:58px 1fr;gap:12px;padding:13px 0;border-top:1px solid var(--line)}.related-product img{width:58px;height:52px;border-radius:8px;background:#eef3fa;object-fit:contain}.related-product strong{font-size:14px;display:block}.related-product p{font-size:12px;color:var(--muted);margin:3px 0 0;line-height:1.5}.product-action{display:block;text-align:center;background:var(--theme);color:#fff;border-radius:9px;padding:11px;margin:20px 0 8px;font-weight:700}.back-link{display:block;text-align:center;color:var(--theme);font-size:13px}
    .footer{background:#10233f;color:#d7e1ef;padding:48px 0 20px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}.footer h3{color:#fff;font-size:15px;margin:0 0 12px}.footer-brand strong{font-size:20px;color:#fff}.footer p{margin:6px 0;color:#aebed3;font-size:13px}.footer-grid>div>a{display:block;color:#b7c6da;font-size:13px;margin:5px 0}.footer-grid>div>a:hover{color:#fff}.footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:30px;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#9eb0c8;font-size:12px}
    @media(max-width:900px){.main-nav{display:none}.hamburger{display:block}.member-link{display:none}.header-inner{justify-content:space-between}.product-layout{grid-template-columns:1fr}.product-aside{position:static}.footer-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:600px){.container{width:min(100% - 28px,1180px)}.topbar .container{height:auto;min-height:38px;padding:7px 0;display:block}.topbar .container>span{display:block}.topbar a:first-child{margin-left:0}.header-inner{height:66px}.mega-menu{display:none}.ea-content-stack{padding:25px 0 50px}.product-main{padding:20px}.product-heading{grid-template-columns:1fr;gap:15px}.product-cover{width:100%;height:125px}.product-heading h1{font-size:29px}.product-summary{font-size:15px}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-bottom:8px}}