:root{
      --theme:#0B3D91;
      --ink:#182233;
      --muted:#6c7688;
      --line:#e6eaf0;
      --paper:#f6f8fb;
      --white:#fff;
      --shadow:0 18px 50px rgba(21,42,76,.09);
      --radius:16px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:var(--paper);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.65}
    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{height:38px;background:#10223e;color:#dce7f7;font-size:13px}
    .topbar-inner{height:38px;display:flex;align-items:center;justify-content:space-between}
    .topbar-contact{display:flex;gap:12px;align-items:center}
    .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:28px}
    .logo{display:flex;align-items:center;gap:10px;white-space:nowrap;font-weight:800;color:#10223e}
    .logo img{width:36px;height:36px;object-fit:contain}
    .logo span{font-size:19px}
    .main-nav{margin-left:auto}
    .nav-list{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:5px;padding:27px 12px;font-size:14px;color:#303b4d;white-space:nowrap}
    .nav-link:hover{color:var(--theme)}
    .has-arrow:after{content:"";width:6px;height:6px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg) translateY(-2px)}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);width:300px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:var(--shadow);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}
    .mega-menu{width:690px}
    .mega-brokers{width:760px}
    .mega-videos,.mega-products{width:900px}
    .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;pointer-events:auto;transform:translateX(-50%) translateY(0)}
    .nav-item:after{content:"";position:absolute;left:0;right:0;top:100%;height:10px}
    .dropdown-title,.mega-title{margin:0 0 14px;color:var(--theme);font-weight:800;font-size:14px}
    .dropdown-articles{display:grid;gap:9px}
    .dropdown-articles a,.mega-categories a{font-size:13px;color:#4c586b}
    .dropdown-articles a:hover,.mega-categories a:hover{color:var(--theme)}
    .dropdown-more,.mega-footer{display:block;margin-top:17px;padding-top:13px;border-top:1px solid var(--line);color:var(--theme);font-size:13px;font-weight:700}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .mega-card{display:block;padding:12px;border:1px solid var(--line);border-radius:11px;background:#fbfcfe}
    .mega-card:hover{border-color:#a9bee3;transform:translateY(-2px)}
    .mega-card-logo{display:flex;align-items:center;gap:8px;min-width:0}
    .mega-card-logo img{width:28px;height:28px;object-fit:contain}
    .mega-card strong,.mega-video-title,.mega-product-title{display:block;font-size:13px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
    .mega-card p{margin:7px 0 0;color:var(--muted);font-size:11px;line-height:1.5}
    .mega-card-meta{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px;color:#778398;font-size:10px}
    .mega-layout{display:grid;grid-template-columns:150px 1fr;gap:20px}
    .mega-categories{display:grid;align-content:start;gap:9px}
    .mega-video-cover,.mega-product-cover{width:100%;height:68px;object-fit:cover;border-radius:7px;margin-bottom:7px}
    .mega-tool-icon{width:28px;height:28px;object-fit:contain}
    .header-btns{display:flex;align-items:center;gap:10px}
    .header-member{font-size:13px;color:var(--theme);font-weight:700}
    .header-open{padding:9px 15px;border-radius:8px;background:var(--theme);color:#fff;font-size:13px}
    .hamburger{display:none;width:42px;height:40px;padding:9px;border:1px solid var(--line);background:#fff;border-radius:8px;cursor:pointer}
    .hamburger span{display:block;height:2px;background:var(--theme);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(8,19,37,.48);z-index:40}
    .drawer-overlay.open{display:block}
    .mobile-drawer{position:fixed;right:0;top:0;bottom:0;width:min(390px,88vw);background:#fff;z-index:41;transform:translateX(100%);transition:.25s;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);font-weight:700;color:var(--theme)}
    .drawer-head>a{margin-left:auto;color:var(--theme)}
    .drawer-close{border:0;background:transparent;font-size:28px;color:#6a7484;cursor:pointer}
    .drawer-menu{padding:12px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;color:#26344a;font-size:15px;cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--theme);font-size:20px}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:none;padding:4px 0 8px 14px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:14px}

    .productlist-main{padding:54px 0 80px}
    .product-hero{text-align:center;max-width:760px;margin:0 auto 34px}
    .eyebrow{display:inline-flex;padding:6px 12px;border-radius:99px;background:#e9f0fc;color:var(--theme);font-size:12px;font-weight:800;letter-spacing:.08em}
    .product-hero h1{margin:14px 0 10px;font-size:clamp(30px,5vw,50px);line-height:1.2;letter-spacing:-.04em}
    .product-hero p{margin:0;color:var(--muted);font-size:16px}
    .category-tabs{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin:28px 0 38px}
    .category-tabs a{padding:9px 17px;border:1px solid #d8e0ec;border-radius:99px;background:#fff;color:#4c5a70;font-size:13px}
    .category-tabs a:hover,.category-tabs a:first-child{background:var(--theme);border-color:var(--theme);color:#fff}
    .product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
    .product-card{display:flex;flex-direction:column;min-width:0;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 8px 25px rgba(24,42,72,.04);transition:.2s}
    .product-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#b8cbea}
    .product-image{height:190px;background:#edf2f9;overflow:hidden}
    .product-image img{width:100%;height:100%;object-fit:cover}
    .product-body{display:flex;flex:1;flex-direction:column;padding:21px}
    .product-label{color:var(--theme);font-size:12px;font-weight:700;margin-bottom:8px}
    .product-card h2{margin:0 0 9px;font-size:19px;line-height:1.35}
    .product-summary{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin:0;color:var(--muted);font-size:14px;line-height:1.75}
    .product-meta{display:flex;justify-content:space-between;gap:10px;margin-top:auto;padding-top:17px;color:#8792a2;font-size:12px}
    .product-more{display:inline-flex;align-items:center;gap:5px;margin-top:16px;color:var(--theme);font-size:13px;font-weight:800}
    .product-more:after{content:"→";font-size:17px}
    .pagination{display:flex;justify-content:center;gap:8px;margin-top:44px;flex-wrap:wrap}
    .pagination a{min-width:36px;padding:7px 11px;border:1px solid #dce3ed;border-radius:7px;background:#fff;text-align:center;color:#59677b;font-size:13px}
    .pagination a.active,.pagination a:hover{background:var(--theme);border-color:var(--theme);color:#fff}

    .footer{background:#101e35;color:#b9c6d9}
    .footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.15fr;gap:42px;padding:54px 0 42px}
    .footer .logo{color:#fff;margin-bottom:16px}
    .footer .logo img{filter:none}
    .footer p{margin:0;max-width:330px;font-size:13px;line-height:1.8}
    .footer h3{margin:4px 0 17px;color:#fff;font-size:15px}
    .footer-links,.footer-contact{display:grid;gap:10px;font-size:13px}
    .footer a:hover{color:#fff}
    .footer-social{margin-top:18px;font-size:13px;color:#d9e7ff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding:18px 0;border-top:1px solid rgba(255,255,255,.12);font-size:12px}
    .footer-bottom-links{display:flex;gap:18px}

    @media(max-width:1050px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-btns{margin-left:auto}
      .mega-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:760px){
      .container{width:min(100% - 28px,600px)}
      .topbar{height:auto;padding:8px 0}
      .topbar-inner{height:auto;display:block;text-align:center}
      .topbar-contact{justify-content:center;margin-top:2px}
      .header-inner{height:68px}
      .header-member{display:none}
      .header-open{padding:8px 11px}
      .productlist-main{padding:38px 0 58px}
      .product-hero h1{font-size:34px}
      .product-hero p{font-size:14px}
      .product-grid{grid-template-columns:1fr;gap:17px}
      .product-image{height:205px}
      .footer-main{grid-template-columns:1fr 1fr;gap:28px;padding:40px 0 30px}
      .footer-brand{grid-column:1/-1}
      .footer-bottom{display:block;line-height:1.8}
      .footer-bottom-links{margin-top:6px}
    }
    @media(max-width:430px){
      .topbar-contact{font-size:11px}
      .logo span{font-size:16px}
      .mega-layout{grid-template-columns:1fr}
      .footer-main{grid-template-columns:1fr}
      .footer-brand{grid-column:auto}
    }