:root{
      --primary:#0B3D91;
      --primary-dark:#082d6b;
      --ink:#172033;
      --muted:#667085;
      --line:#e5eaf1;
      --soft:#f5f7fb;
      --white:#fff;
      --radius:10px;
      --shadow:0 16px 42px rgba(15,35,70,.09)
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#fff;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei",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{background:#101827;color:#dbe4f2;font-size:13px}
    .topbar-inner{min-height:36px;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{min-height:76px;display:flex;align-items:center;gap:28px}
    .logo{display:inline-flex;align-items:center;gap:10px;white-space:nowrap;font-weight:800;font-size:19px;color:var(--primary)}
    .logo img{width:36px;height:36px;object-fit:contain}
    .main-nav{margin-left:auto}
    .nav-list{display:flex;align-items:stretch;gap:4px;list-style:none;margin:0;padding:0}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:5px;padding:27px 13px;font-size:14px;font-weight:600;white-space:nowrap}
    .nav-link:hover,.nav-link:focus{color:var(--primary)}
    .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:translate(-50%,8px);width:260px;padding:16px;background:#fff;border:1px solid var(--line);border-radius:0 0 var(--radius) var(--radius);box-shadow:var(--shadow);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}
    .mega-menu{width:650px}
    .mega-wide{width:min(920px,calc(100vw - 40px))}
    .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:translate(-50%,0)}
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
    .dropdown-panel>a{display:block;padding:8px 6px;border-bottom:1px solid var(--line);font-size:13px}
    .dropdown-panel>a:hover,.mega-categories a:hover{color:var(--primary);background:var(--soft)}
    .dropdown-all,.mega-footer{display:block;margin-top:12px;color:var(--primary);font-size:13px;font-weight:700}
    .mega-title{margin:0 0 12px;font-size:14px;color:var(--primary)}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
    .mega-card{min-width:0;padding:10px;border:1px solid var(--line);border-radius:7px;background:#fff}
    .mega-card:hover{border-color:#9eb6dc;box-shadow:0 5px 15px rgba(11,61,145,.08)}
    .mega-card img{width:28px;height:28px;object-fit:contain;margin-bottom:7px}
    .mega-card .video-thumb,.mega-card .product-thumb{width:100%;height:62px;object-fit:cover}
    .mega-card strong{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px}
    .mega-card p{margin:4px 0 0;color:var(--muted);font-size:11px;line-height:1.45}
    .mega-meta{display:flex;gap:8px;color:var(--muted);font-size:10px;flex-wrap:wrap}
    .mega-columns{display:grid;grid-template-columns:180px 1fr;gap:22px}
    .mega-categories a{display:block;padding:7px 8px;font-size:12px;border-radius:5px}
    .header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}
    .account-btn{padding:9px 15px;border-radius:6px;background:var(--primary);color:#fff;font-size:13px;font-weight:700}
    .account-btn:hover{background:var(--primary-dark)}
    .hamburger{display:none;width:42px;height:40px;padding:9px;border:1px solid var(--line);border-radius:6px;background:#fff;cursor:pointer}
    .hamburger span{display:block;width:21px;height:2px;margin:4px auto;background:var(--ink);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;z-index:40;background:rgba(9,20,40,.48);opacity:0;visibility:hidden;transition:.2s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;z-index:41;top:0;right:0;width:min(390px,88vw);height:100vh;overflow:auto;background:#fff;transform:translateX(100%);transition:.25s;box-shadow:-12px 0 34px rgba(0,0,0,.16)}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:14px;padding:18px 20px;border-bottom:1px solid var(--line)}
    .drawer-head>a{margin-left:auto;padding:7px 12px;background:var(--primary);border-radius:5px;color:#fff;font-size:13px}
    .drawer-close{border:0;background:transparent;color:var(--muted);font-size:28px;line-height:1;cursor:pointer}
    .drawer-menu{padding:12px 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:var(--ink);font-size:15px;cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--muted);font-size:20px}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:none;padding:4px 0 8px 15px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:13px}
    .footer{margin-top:72px;background:#101827;color:#c8d1df}
    .footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:38px;padding:52px 0 40px}
    .footer .logo{color:#fff}
    .footer-brand p{max-width:330px;color:#98a6b9;font-size:13px}
    .footer h3{margin:3px 0 16px;color:#fff;font-size:14px}
    .footer-links{display:grid;gap:9px}
    .footer-links a,.footer-contact p{color:#aab6c7;font-size:13px}
    .footer-links a:hover,.footer-contact a:hover{color:#fff}
    .footer-contact p{margin:8px 0}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;padding:18px 0;border-top:1px solid rgba(255,255,255,.12);color:#8996a9;font-size:12px}
    .productlist-main{background:#f7f9fc;padding:54px 0 1px}
    .page-heading{text-align:center;max-width:760px;margin:0 auto 34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:9px;color:var(--primary);font-size:12px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--primary)}
    .page-heading h1{margin:0;font-size:clamp(30px,4vw,46px);line-height:1.2;letter-spacing:0}
    .page-heading p{margin:14px auto 0;color:var(--muted);font-size:15px}
    .product-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:28px;align-items:start}
    .category-panel{position:sticky;top:18px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:var(--radius)}
    .category-panel h2{margin:0 0 13px;font-size:17px}
    .category-panel a{display:flex;justify-content:space-between;gap:8px;padding:10px 11px;border-radius:6px;color:var(--muted);font-size:13px}
    .category-panel a:after{content:"›";color:#aab5c5}
    .category-panel a:hover{background:#edf3fc;color:var(--primary)}
    .product-area{min-width:0}
    .area-toolbar{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:16px}
    .area-toolbar h2{margin:0;font-size:21px}
    .area-toolbar span{color:var(--muted);font-size:13px}
    .product-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
    .product-card{display:flex;flex-direction:column;min-width:0;overflow:hidden;background:#fff;border:1px solid var(--line);border-radius:var(--radius);transition:.2s}
    .product-card:hover{transform:translateY(-3px);border-color:#a9bddf;box-shadow:var(--shadow)}
    .product-image{aspect-ratio:16/9;background:#e9eef6;overflow:hidden}
    .product-image img{width:100%;height:100%;object-fit:cover}
    .product-body{display:flex;flex:1;flex-direction:column;padding:18px}
    .product-body h3{margin:0 0 8px;font-size:17px;line-height:1.4}
    .product-summary{display:-webkit-box;overflow:hidden;margin:0;color:var(--muted);font-size:13px;line-height:1.7;-webkit-box-orient:vertical;-webkit-line-clamp:3}
    .product-meta{display:flex;flex-wrap:wrap;gap:8px 14px;margin-top:auto;padding-top:16px;color:#8995a7;font-size:12px}
    .product-meta span+span{padding-left:14px;border-left:1px solid var(--line)}
    .product-cta{display:inline-flex;align-items:center;justify-content:center;margin-top:15px;padding:9px 12px;border:1px solid #c8d6eb;border-radius:5px;color:var(--primary);font-size:13px;font-weight:700}
    .product-cta:hover{background:var(--primary);border-color:var(--primary);color:#fff}
    .pagination{display:flex;justify-content:center;gap:7px;margin:36px 0 8px;flex-wrap:wrap}
    .pagination a{min-width:34px;padding:6px 10px;border:1px solid var(--line);border-radius:5px;background:#fff;text-align:center;color:var(--muted);font-size:13px}
    .pagination a:hover,.pagination a.active{border-color:var(--primary);background:var(--primary);color:#fff}
    @media(max-width:1050px){
      .main-nav{display:none}
      .hamburger{display:block}
      .footer-main{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:760px){
      .container{width:min(100% - 28px,600px)}
      .topbar-inner{padding:8px 0;align-items:flex-start;flex-direction:column;gap:2px}
      .topbar-contact{gap:12px;flex-wrap:wrap}
      .header-inner{min-height:66px;gap:12px}
      .header-btns{margin-left:auto}
      .account-btn{display:none}
      .productlist-main{padding-top:38px}
      .product-layout{grid-template-columns:1fr;gap:20px}
      .category-panel{position:static}
      .category-panel div{display:grid;grid-template-columns:repeat(2,1fr);gap:2px}
      .product-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
      .product-body{padding:14px}
      .product-body h3{font-size:15px}
      .footer-main{grid-template-columns:1fr;gap:26px;padding-top:38px}
      .footer-bottom{align-items:flex-start;flex-direction:column}
    }
    @media(max-width:460px){
      .product-grid{grid-template-columns:1fr}
      .category-panel div{grid-template-columns:1fr}
      .page-heading h1{font-size:30px}
    }
    body.drawer-locked{overflow:hidden}