:root{
      --primary:#0B3D91;
      --primary-dark:#082b68;
      --ink:#172033;
      --muted:#667085;
      --line:#e5eaf2;
      --surface:#f5f8fc;
      --white:#fff;
      --shadow:0 18px 50px rgba(11,61,145,.10);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#fff;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:0 auto}
    .topbar{background:#081b3b;color:#d9e7ff;font-size:13px}
    .topbar-inner{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar-contact{display:flex;gap:22px}
    .topbar a:hover{color:#fff}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{height:78px;display:flex;align-items:center;gap:30px}
    .logo{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;font-size:19px;font-weight:800;color:var(--primary)}
    .logo img{width:36px;height:36px;object-fit:contain}
    .main-nav{margin-left:auto}
    .nav-list{display:flex;align-items:center;gap:4px;list-style:none;padding:0;margin:0}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:6px;padding:27px 13px;font-size:14px;font-weight:600;color:#29364d}
    .nav-link:hover{color:var(--primary)}
    .has-arrow:after{content:"⌄";font-size:13px;color:#8b96a8}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translate(-50%,8px);width:280px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:0 20px 40px rgba(16,36,75,.14);opacity:0;visibility:hidden;transition:.2s ease;pointer-events:none}
    .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:translate(-50%,0);pointer-events:auto}
    .dropdown-panel a{display:block;padding:9px 4px;border-bottom:1px solid #eef1f6;font-size:14px}
    .dropdown-panel a:hover{color:var(--primary)}
    .dropdown-all,.mega-footer{display:block;margin-top:13px;color:var(--primary);font-weight:700;font-size:13px}
    .mega-menu{width:650px}
    .mega-menu-brokers,.mega-menu-video,.mega-menu-products{width:760px}
    .mega-title{margin:0 0 12px;font-size:14px;font-weight:800;color:var(--primary)}
    .mega-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
    .mega-card{display:flex;gap:10px;min-width:0;padding:10px;border:1px solid #edf0f5;border-radius:12px;background:#fbfcfe}
    .mega-card:hover{border-color:#afc5ec;background:#f5f9ff}
    .mega-card img{width:40px;height:40px;object-fit:contain;border-radius:9px;flex:0 0 auto}
    .mega-card span{min-width:0}
    .mega-card strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:13px}
    .mega-card p,.mega-card small{display:block;margin:2px 0 0;color:var(--muted);font-size:11px;line-height:1.5}
    .mega-categories{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:14px}
    .mega-categories a{padding:5px 10px;background:#eef4ff;color:var(--primary);border-radius:99px;font-size:12px}
    .header-btns{display:flex;align-items:center;gap:12px}
    .member-entry{font-size:13px;color:var(--primary);font-weight:700}
    .header-account{display:inline-flex;align-items:center;justify-content:center;padding:9px 16px;border-radius:9px;background:var(--primary);color:#fff;font-size:13px;font-weight:700}
    .header-account:hover{background:var(--primary-dark)}
    .hamburger{display:none;width:42px;height:40px;border:1px solid var(--line);background:#fff;border-radius:9px;cursor:pointer;padding:9px}
    .hamburger span{display:block;height:2px;background:var(--primary);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{display:none;position:fixed;inset:0;background:rgba(5,18,42,.5);z-index:40}
    .drawer-overlay.open{display:block}
    .mobile-drawer{position:fixed;top:0;right:0;width:min(370px,88vw);height:100vh;overflow:auto;background:#fff;z-index:50;transform:translateX(105%);transition:.25s ease;box-shadow:-15px 0 40px rgba(0,0,0,.18)}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{height:70px;display:flex;align-items:center;gap:15px;padding:0 20px;border-bottom:1px solid var(--line)}
    .member-drawer{margin-right:auto;color:var(--primary);font-weight:800}
    .drawer-head>a{padding:7px 12px;border-radius:7px;background:var(--primary);color:#fff;font-size:13px}
    .drawer-close{border:0;background:transparent;font-size:28px;color:#65718a;cursor:pointer}
    .drawer-menu{padding:15px 20px 35px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 3px;text-align:left;border:0;border-bottom:1px solid #edf0f5;background:#fff;color:var(--ink);font-weight:700;cursor:pointer}
    .drawer-toggle:after{content:"＋";float:right;color:var(--primary)}
    .drawer-toggle.active:after{content:"－"}
    .drawer-submenu{display:none;padding:5px 12px;background:#f7f9fc;border-radius:8px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:#536079;font-size:13px}
    body.drawer-locked{overflow:hidden}
    .footer{margin-top:80px;background:#0a1830;color:#b8c7df}
    .footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:40px;padding:58px 0 42px}
    .footer .logo{color:#fff}
    .footer-brand p{max-width:330px;margin:18px 0 0;color:#9dafca;font-size:13px}
    .footer h3{margin:0 0 16px;color:#fff;font-size:15px}
    .footer-links{display:grid;gap:9px}
    .footer-links a,.footer-contact p{margin:0;color:#aebdd5;font-size:13px}
    .footer-links a:hover,.footer-contact a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding:18px 0;border-top:1px solid rgba(255,255,255,.12);color:#8799b6;font-size:12px}
    .ea-content-stack{padding:48px 0 20px;background:linear-gradient(180deg,#f6f9fe 0,#fff 420px)}
    .product-breadcrumb{display:flex;align-items:center;gap:9px;margin-bottom:26px;color:#7a879d;font-size:13px}
    .product-breadcrumb a{color:var(--primary)}
    .product-hero{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(280px,.7fr);gap:34px;align-items:stretch}
    .product-summary-card,.product-cover-card,.product-body-card,.related-products{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
    .product-summary-card{padding:34px}
    .product-kicker{display:inline-flex;padding:5px 11px;border-radius:99px;background:#eaf1ff;color:var(--primary);font-size:12px;font-weight:700}
    .product-summary-card h1{margin:15px 0 12px;color:#14243e;font-size:clamp(30px,4vw,48px);line-height:1.2;letter-spacing:-.03em}
    .product-lead{margin:0;color:#5e6d84;font-size:16px}
    .product-meta{display:flex;flex-wrap:wrap;gap:18px;margin:25px 0 0;padding-top:20px;border-top:1px solid var(--line);color:#64728a;font-size:13px}
    .product-meta strong{display:block;color:#1c3153;font-size:17px}
    .product-cover-card{display:flex;align-items:center;justify-content:center;min-height:300px;padding:30px;background:linear-gradient(145deg,#edf4ff,#fff)}
    .product-cover-card img{max-height:230px;width:auto;object-fit:contain}
    .product-content-grid{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:28px;margin-top:30px;align-items:start}
    .product-body-card{padding:34px;min-width:0;max-width:100%;overflow-x:auto}
    .product-body-card h2{margin:0 0 22px;font-size:24px;color:#152846}
    .product-body{min-width:0;max-width:100%;overflow-x:auto;color:#46556d}
    .product-body img,.product-body table{max-width:100%;height:auto}
    .product-body table{display:block;overflow-x:auto;border-collapse:collapse}
    .product-body h2,.product-body h3{color:#172c4c}
    .product-body a{color:var(--primary);text-decoration:underline}
    .product-aside{display:grid;gap:20px}
    .aside-box{padding:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
    .aside-box h3{margin:0 0 15px;font-size:17px}
    .aside-list{display:grid;gap:12px}
    .aside-list a{display:block;padding-bottom:12px;border-bottom:1px solid #edf0f5}
    .aside-list a:last-child{padding-bottom:0;border-bottom:0}
    .aside-list strong{display:block;font-size:14px}
    .aside-list span{display:block;margin-top:3px;color:var(--muted);font-size:12px}
    .related-products{margin-top:30px;padding:30px}
    .related-products h2{margin:0 0 20px;font-size:22px}
    .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
    .related-card{padding:17px;border:1px solid var(--line);border-radius:13px;background:#fbfcfe}
    .related-card img{width:58px;height:58px;object-fit:contain;margin-bottom:12px}
    .related-card h3{margin:0 0 7px;font-size:15px}
    .related-card p{margin:0;color:var(--muted);font-size:13px}
    @media(max-width:980px){
      .main-nav{display:none}
      .hamburger{display:block}
      .product-hero,.product-content-grid{grid-template-columns:1fr}
      .product-cover-card{min-height:220px}
      .footer-main{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:640px){
      .container{width:min(100% - 28px,1180px)}
      .topbar-inner{padding:8px 0;align-items:flex-start}
      .topbar-contact{flex-direction:column;gap:0;text-align:right}
      .header-inner{height:68px;gap:10px}
      .member-entry{display:none}
      .header-account{padding:8px 11px}
      .product-summary-card,.product-body-card{padding:23px}
      .product-summary-card h1{font-size:31px}
      .product-meta{gap:13px}
      .related-grid{grid-template-columns:1fr}
      .footer-main{grid-template-columns:1fr;gap:28px;padding:42px 0 30px}
      .footer-bottom{display:block;line-height:2}
    }