:root{
  --theme:#0B3D91;
  --ink:#172033;
  --muted:#687386;
  --line:#e5eaf1;
  --soft:#f5f7fa;
  --white:#fff;
  --shadow:0 16px 45px rgba(20,38,70,.09);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:#fff;font-family:"Microsoft YaHei","PingFang SC",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:0 auto}

.topbar{background:#10223d;color:#dce6f5;font-size:13px}
.topbar .container{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.topbar a{margin-left:20px;color:#dce6f5}

.header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
.header-inner{height:76px;display:flex;align-items:center;gap:30px}
.logo{display:flex;align-items:center;gap:10px;min-width:max-content;font-size:19px;font-weight:800;color:var(--theme)}
.logo img{width:38px;height:38px;object-fit:contain}
.main-nav{flex:1}
.nav-list{display:flex;align-items:center;justify-content:center;gap:3px;list-style:none;margin:0;padding:0}
.nav-item{position:relative}
.nav-link{display:block;padding:25px 13px;color:#27354a;font-size:14px;white-space:nowrap}
.nav-link:hover,.nav-link:focus{color:var(--theme)}
.has-arrow:after{content:"⌄";font-size:12px;margin-left:6px;color:#8290a4}
.dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translateX(-50%);visibility:hidden;opacity:0;pointer-events:none;transition:.2s ease;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:0 0 12px 12px;padding:18px;min-width:235px}
.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;pointer-events:auto}
.dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
.dropdown-panel a{display:block;padding:8px 10px;border-radius:7px;font-size:14px}
.dropdown-panel a:hover{background:var(--soft);color:var(--theme)}
.mega-menu{width:600px}
.product-menu{width:640px}
.mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.mega-card{display:block;padding:10px;border:1px solid var(--line);border-radius:9px;background:#fff}
.mega-card:hover{border-color:#a9bddf;background:#f8fbff}
.mega-card img{width:38px;height:38px;object-fit:contain;margin-bottom:6px;border-radius:6px}
.mega-card strong{display:block;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mega-card small{display:block;color:var(--muted);font-size:11px;line-height:1.5;margin-top:4px}
.mega-footer{display:inline-block;margin-top:14px;padding:6px 10px;color:var(--theme);font-size:13px}
.mega-footer:hover{text-decoration:underline}
.header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}
.member-entry{font-size:13px;color:var(--theme)}
.open-account{background:var(--theme);color:#fff;padding:8px 15px;border-radius:7px;font-size:13px}
.hamburger{display:none;width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:7px;padding:9px;cursor:pointer}
.hamburger span{display:block;height:2px;background:var(--theme);margin:5px 0;transition:.2s}

.drawer-overlay{display:none}
.mobile-drawer{display:none}

.ea-content-stack{padding:54px 0 80px;background:linear-gradient(180deg,#f5f8fc 0,#fff 38%)}
.product-breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;color:var(--muted);font-size:13px;margin-bottom:22px}
.product-breadcrumb a:hover{color:var(--theme)}
.product-head{display:grid;grid-template-columns:220px minmax(0,1fr);gap:34px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:18px;padding:32px;box-shadow:var(--shadow)}
.product-image{width:180px;height:180px;object-fit:contain;border-radius:16px;background:#f5f8fc;padding:20px}
.product-kicker{color:var(--theme);font-size:13px;font-weight:700;letter-spacing:.08em}
.product-title{font-size:clamp(28px,4vw,46px);line-height:1.2;margin:8px 0 14px;color:#12213a}
.product-summary{font-size:16px;color:#5d697b;margin:0 0 20px}
.product-meta{display:flex;gap:18px;flex-wrap:wrap;color:var(--muted);font-size:13px}
.product-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:23px}
.primary-btn,.secondary-btn{display:inline-flex;align-items:center;justify-content:center;border-radius:8px;padding:11px 20px;font-size:14px}
.primary-btn{background:var(--theme);color:#fff}
.secondary-btn{border:1px solid #cbd6e5;color:var(--theme);background:#fff}
.product-layout{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:28px;margin-top:28px;align-items:start}
.product-panel,.related-panel{background:#fff;border:1px solid var(--line);border-radius:15px;padding:28px;box-shadow:0 8px 25px rgba(20,38,70,.045)}
.panel-title{font-size:21px;margin:0 0 18px;color:#172c4e}
.product-body{min-width:0;max-width:100%;overflow-x:auto;color:#4c586b;font-size:15px}
.product-body img{max-width:100%;height:auto}
.product-body table{max-width:100%;width:100%;border-collapse:collapse;display:block;overflow-x:auto}
.product-body th,.product-body td{border:1px solid var(--line);padding:9px;text-align:left;white-space:nowrap}
.product-body h2,.product-body h3{color:#1b355d;margin-top:28px}
.product-body a{color:var(--theme);text-decoration:underline}
.related-item{display:grid;grid-template-columns:58px minmax(0,1fr);gap:11px;padding:13px 0;border-bottom:1px solid var(--line)}
.related-item:last-child{border-bottom:0}
.related-item img{width:58px;height:58px;object-fit:contain;border-radius:8px;background:#f4f7fb;padding:7px}
.related-item strong{display:block;font-size:14px;line-height:1.45}
.related-item small{display:block;color:var(--muted);font-size:12px;line-height:1.5;margin-top:3px}
.related-item:hover strong{color:var(--theme)}
.risk-note{margin-top:25px;padding:16px 18px;background:#f5f8fc;border-left:3px solid var(--theme);color:#627087;font-size:13px}

.footer{background:#101d31;color:#bec9d9;padding:48px 0 0}
.footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1.2fr;gap:34px}
.footer h3,.footer h4{color:#fff;margin:0 0 14px}
.footer h3{font-size:20px}
.footer h4{font-size:15px}
.footer p{margin:7px 0;font-size:13px}
.footer-grid>div>a{display:block;color:#bec9d9;font-size:13px;margin:7px 0}
.footer-grid>div>a:hover{color:#fff}
.footer-bottom{display:flex;justify-content:space-between;gap:15px;border-top:1px solid rgba(255,255,255,.12);margin-top:35px;padding:18px 0;font-size:12px;color:#8e9bb0}

@media (max-width:900px){
  .main-nav{display:none}
  .header-inner{justify-content:space-between}
  .header-btns{margin-left:auto}
  .hamburger{display:block}
  .member-entry{display:none}
  .mobile-drawer{display:block;position:fixed;z-index:50;top:0;right:0;width:min(370px,88vw);height:100vh;background:#fff;transform:translateX(105%);transition:.25s ease;box-shadow:-12px 0 35px rgba(0,0,0,.16);overflow:auto}
  .mobile-drawer.open{transform:translateX(0)}
  .drawer-overlay{position:fixed;z-index:40;inset:0;background:rgba(8,20,39,.46);opacity:0;pointer-events:none;display:block;transition:.25s}
  .drawer-overlay.open{opacity:1;pointer-events:auto}
  .drawer-head{display:flex;align-items:center;gap:13px;padding:20px;border-bottom:1px solid var(--line);font-weight:700;color:var(--theme)}
  .drawer-head>a{margin-left:auto;color:var(--theme);font-size:13px}
  .drawer-close{border:0;background:none;font-size:29px;line-height:1;color:#6b7686;cursor:pointer}
  .drawer-menu{padding:10px 20px 30px}
  .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;color:#25344a;font-size:15px;cursor:pointer}
  .drawer-toggle:after{content:"＋";float:right;color:#8a98aa}
  .drawer-toggle.active{color:var(--theme)}
  .drawer-toggle.active:after{content:"－"}
  .drawer-submenu{display:none;padding:5px 0 8px 14px;background:#f7f9fc}
  .drawer-submenu.open{display:block}
  .drawer-submenu a{display:block;padding:8px 0;color:#637188;font-size:13px}
  .product-head{grid-template-columns:1fr;text-align:center}
  .product-image{margin:0 auto}
  .product-meta,.product-actions{justify-content:center}
  .product-layout{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:560px){
  .container{width:min(100% - 28px,1180px)}
  .topbar .container{align-items:flex-start;flex-direction:column;padding:8px 0;gap:2px}
  .topbar a{margin-left:0;margin-right:12px}
  .header-inner{height:66px}
  .logo{font-size:16px}
  .logo img{width:32px;height:32px}
  .open-account{padding:7px 11px}
  .ea-content-stack{padding:35px 0 55px}
  .product-head,.product-panel,.related-panel{padding:20px}
  .product-title{font-size:30px}
  .footer-grid{grid-template-columns:1fr;gap:25px}
  .footer-bottom{display:block}
  .footer-bottom span{display:block;margin:5px 0}
}