:root{
  --theme:#0B3D91;
  --theme-deep:#082b68;
  --ink:#17233c;
  --muted:#68758b;
  --line:#dce4ef;
  --soft:#f3f7fc;
  --white:#fff;
  --shadow:0 16px 45px rgba(17,47,92,.1);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:#f7faff;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",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:0 auto}
.topbar{background:#081d42;color:#dce9ff;font-size:13px}
.topbar .container{height:36px;display:flex;align-items:center;justify-content:space-between}
.topbar a{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:34px}
.logo{display:flex;align-items:center;gap:10px;font-size:19px;font-weight:800;color:var(--theme);white-space:nowrap}
.logo img{width:36px;height:36px;object-fit:contain}
.main-nav{flex:1}
.nav-list{display:flex;align-items:center;justify-content:center;gap:4px;padding:0;margin:0;list-style:none}
.nav-list>li{position:relative}
.nav-link{display:block;padding:25px 14px;color:#263753;font-size:14px;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 7px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg)}
.dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);width:320px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:.2s;z-index:30}
.mega-menu{width:650px}
.nav-list>li:after{content:"";position:absolute;left:0;right:0;top:100%;height:10px}
.nav-list>li:hover .dropdown-panel,.nav-list>li:focus-within .dropdown-panel,
.nav-list>li:hover .mega-menu,.nav-list>li:focus-within .mega-menu{opacity:1;visibility:visible}
.drop-title,.mega-title{margin:0 0 12px;color:var(--theme);font-size:15px;font-weight:800}
.drop-item{display:block;padding:9px 0;border-bottom:1px solid #edf1f7;font-size:13px}
.drop-item:hover,.mega-card:hover{color:var(--theme)}
.mega-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
.mega-card{display:grid;gap:3px;padding:12px;border:1px solid #e7edf6;border-radius:10px;background:#fbfdff}
.mega-card img{width:30px;height:30px;object-fit:contain}
.mega-card strong{font-size:13px}
.mega-card small{display:block;color:var(--muted);font-size:11px;line-height:1.5}
.mega-footer{display:inline-block;margin-top:13px;color:var(--theme);font-size:12px;font-weight:700;margin-right:12px}
.header-btns{display:flex;align-items:center;gap:13px;white-space:nowrap;font-size:13px}
.open-account{padding:8px 15px;border-radius:7px;background:var(--theme);color:#fff}
.hamburger{display:none;width:40px;height:38px;border:1px solid var(--line);background:#fff;border-radius:7px;padding:8px;cursor:pointer}
.hamburger span{display:block;height:2px;background:var(--theme);margin:4px 0;transition:.2s}
.hamburger.active span:first-child{transform:translateY(6px) rotate(45deg)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:last-child{transform:translateY(-6px) rotate(-45deg)}
.drawer-overlay{position:fixed;inset:0;background:rgba(4,18,43,.48);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;transform:translateX(100%);transition:.28s;z-index:41;overflow:auto}
.mobile-drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;gap:14px;padding:20px;border-bottom:1px solid var(--line);color:var(--theme);font-weight:700}
.drawer-head>a{margin-left:auto;padding:6px 12px;border-radius:5px;background:var(--theme);color:#fff;font-size:13px}
.drawer-close{border:0;background:none;font-size:28px;color:var(--muted);cursor:pointer}
.drawer-menu{padding:10px 20px 30px}
.drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid #edf1f6;background:none;text-align:left;color:var(--ink);font-size:15px;cursor:pointer}
.drawer-toggle:after{content:"+";float:right;color:var(--theme);font-size:20px;line-height:1}
.drawer-toggle.active:after{content:"−"}
.drawer-submenu{display:none;padding:4px 0 8px 16px}
.drawer-submenu.open{display:block}
.drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:13px}
.footer{margin-top:70px;background:#071b3b;color:#bdcbe1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px;padding:48px 0 35px}
.footer h3,.footer h4{margin:0 0 14px;color:#fff}
.footer h3{font-size:20px}
.footer h4{font-size:14px}
.footer p{margin:7px 0;font-size:13px;line-height:1.8}
.footer-grid>div>a{display:block;margin:7px 0;color:#bdcbe1;font-size:13px}
.footer-grid>div>a:hover{color:#fff}
.footer-bottom{padding:18px 0;border-top:1px solid rgba(255,255,255,.14);font-size:12px;color:#91a5c4}
.ea-content-stack{padding:46px 0 20px;min-height:520px}
.product-breadcrumb{margin-bottom:24px;color:var(--muted);font-size:13px}
.product-breadcrumb a{color:var(--theme)}
.product-layout{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:28px;align-items:start}
.product-main-card,.product-side-card{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 10px 30px rgba(22,57,105,.06)}
.product-main-card{padding:32px}
.product-heading{display:grid;grid-template-columns:130px minmax(0,1fr);gap:24px;align-items:center;padding-bottom:25px;border-bottom:1px solid var(--line)}
.product-cover{width:130px;height:130px;border-radius:16px;object-fit:cover;background:var(--soft);border:1px solid var(--line)}
.product-heading h1{margin:0 0 8px;font-size:clamp(26px,4vw,40px);line-height:1.25;color:#102b59}
.product-summary{margin:0;color:var(--muted);font-size:15px}
.product-meta{display:flex;flex-wrap:wrap;gap:10px 22px;margin:20px 0;color:var(--muted);font-size:13px}
.product-meta b{color:var(--ink)}
.product-body{min-width:0;max-width:100%;overflow-x:auto;padding-top:15px;color:#34445e}
.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:#102b59}
.product-side-card{padding:24px;position:sticky;top:20px}
.product-side-card h2{margin:0 0 17px;font-size:18px;color:#102b59}
.product-action{display:block;text-align:center;padding:12px 16px;border-radius:8px;background:var(--theme);color:#fff;font-weight:700;margin-bottom:20px}
.product-side-list{display:grid;gap:12px}
.product-side-item{display:grid;grid-template-columns:48px minmax(0,1fr);gap:10px;align-items:center;padding:10px;border:1px solid #e7edf6;border-radius:10px}
.product-side-item img{width:48px;height:48px;object-fit:cover;border-radius:8px;background:var(--soft)}
.product-side-item strong{display:block;font-size:13px;color:var(--ink)}
.product-side-item span{display:block;color:var(--muted);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.product-note{margin-top:22px;padding:15px;border-radius:10px;background:#f1f6fd;color:var(--muted);font-size:12px}
@media(max-width:980px){
  .header-inner{gap:15px}
  .nav-link{padding-left:8px;padding-right:8px}
  .header-btns>span{display:none}
}
@media(max-width:760px){
  .container{width:min(100% - 28px,620px)}
  .topbar .container{height:auto;min-height:36px;padding:7px 0;display:block}
  .topbar .contact{display:block}
  .header-inner{height:64px;justify-content:space-between}
  .main-nav{display:none}
  .hamburger{display:block}
  .product-layout{grid-template-columns:1fr}
  .product-side-card{position:static}
  .product-main-card{padding:20px}
  .product-heading{grid-template-columns:76px minmax(0,1fr);gap:15px}
  .product-cover{width:76px;height:76px}
  .product-heading h1{font-size:25px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
}
@media(max-width:460px){
  .open-account{display:none}
  .footer-grid{grid-template-columns:1fr}
}