:root{
      --theme:#0B3D91;
      --theme-deep:#082c68;
      --ink:#172033;
      --muted:#667085;
      --line:#e5eaf1;
      --soft:#f4f7fb;
      --white:#fff;
      --shadow:0 14px 40px rgba(15,38,78,.09);
      --radius:16px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#f7f9fc;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:#102044;color:#d9e4f7;font-size:13px}
    .topbar .container{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:18px}
    .topbar-links{display:flex;gap:22px}
    .topbar a{color:#d9e4f7}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{min-height:78px;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:10px;min-width:190px;color:var(--theme);font-size:20px;font-weight:800;white-space:nowrap}
    .logo img{width:34px;height:34px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:stretch;justify-content:center;gap:4px;padding:0;margin:0;list-style:none}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:5px;padding:27px 13px;color:#29364d;font-size:14px;white-space:nowrap}
    .nav-link:hover,.nav-link:focus{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%);width:270px;padding:18px;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}
    .dropdown-panel a{display:block;padding:8px 4px;border-bottom:1px solid #eef1f5;font-size:13px}
    .dropdown-panel a:last-child{border:0;color:var(--theme);font-weight:700}
    .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}
    .mega-menu{width:620px}
    .mega-title{margin:0 0 12px;color:var(--theme-deep);font-size:14px;font-weight:800}
    .mega-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:9px}
    .mega-card{display:block;min-height:62px;padding:10px 12px;border:1px solid #e6ebf3;border-radius:10px;background:#fbfcfe;font-size:12px;transition:.2s}
    .mega-card:hover{border-color:#aac2e9;background:#f1f6ff}
    .mega-card strong{font-size:13px;color:#1a3159}
    .mega-card span{color:var(--muted)}
    .mega-card img{width:22px;height:22px;object-fit:contain;margin-bottom:4px}
    .mega-footer{display:block;margin-top:14px;color:var(--theme);font-size:13px;font-weight:700}
    .header-btns{display:flex;align-items:center;gap:9px;white-space:nowrap}
    .member-btn,.account-btn{padding:8px 13px;border-radius:8px;font-size:13px}
    .member-btn{color:var(--theme);border:1px solid #c8d7ef}
    .account-btn{color:#fff;background:var(--theme)}
    .hamburger{display:none;width:42px;height:40px;border:1px solid #d9e2ef;border-radius:8px;background:#fff;cursor:pointer}
    .hamburger span{display:block;width:19px;height:2px;margin:4px auto;background:var(--theme);transition:.2s}
    .hamburger.active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
    .hamburger.active span:nth-child(2){opacity:0}
    .hamburger.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
    .drawer-overlay{position:fixed;inset:0;background:rgba(9,23,48,.48);opacity:0;visibility:hidden;z-index:40;transition:.2s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:-360px;width:min(360px,88vw);height:100vh;overflow:auto;background:#fff;z-index:41;box-shadow:-8px 0 30px rgba(0,0,0,.14);transition:right .25s}
    .mobile-drawer.open{right:0}
    .drawer-head{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:19px 20px;color:var(--theme);font-weight:800;border-bottom:1px solid var(--line)}
    .drawer-head a{margin-left:auto;padding:5px 10px;color:#fff;background:var(--theme);border-radius:6px;font-size:13px}
    .drawer-close{width:30px;height:30px;border:0;background:#edf3fb;color:var(--theme);border-radius:50%;font-size:22px;line-height:1;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 #edf0f4;background:transparent;text-align:left;color:#27344a;font-size:15px;cursor:pointer}
    .drawer-group{border-bottom:1px solid #edf0f4}
    .drawer-toggle:after{content:"+";float:right;color:var(--theme);font-size:19px}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:none;padding:5px 0 9px 15px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:7px 0;color:var(--muted);font-size:13px}
    .footer{margin-top:70px;background:#101d35;color:#c8d4e8}
    .footer .container{padding:52px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1.2fr;gap:36px}
    .footer h3,.footer h4{margin:0 0 15px;color:#fff}
    .footer h3{font-size:20px}
    .footer h4{font-size:15px}
    .footer p{margin:7px 0;color:#aebed5;font-size:13px}
    .footer-grid>div>a{display:block;margin:7px 0;color:#aebed5;font-size:13px}
    .footer-grid>div>a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:38px;padding-top:18px;border-top:1px solid rgba(255,255,255,.13);font-size:12px;color:#91a3bf}
    .productlist-main{padding:58px 0 20px}
    .productlist-main .page-heading{text-align:center;max-width:760px;margin:0 auto 34px}
    .productlist-main .eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:10px;color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.08em}
    .productlist-main .eyebrow:before{content:"";width:22px;height:2px;background:var(--theme)}
    .productlist-main h1{margin:0;color:#13284f;font-size:clamp(30px,4vw,46px);line-height:1.25}
    .productlist-main .intro{margin:14px auto 0;color:var(--muted);font-size:15px}
    .product-category-bar{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:10px;margin:0 auto 34px}
    .product-category-bar a{padding:8px 16px;border:1px solid #d6e0ef;border-radius:999px;background:#fff;color:#42536d;font-size:13px}
    .product-category-bar a:hover{border-color:var(--theme);color:var(--theme);background:#f1f6ff}
    .product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
    .product-card{display:flex;flex-direction:column;min-width:0;overflow:hidden;background:#fff;border:1px solid #e4eaf2;border-radius:var(--radius);box-shadow:0 8px 24px rgba(17,43,83,.05);transition:transform .2s,box-shadow .2s}
    .product-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .product-cover{height:190px;padding:18px;background:#edf3fb;display:flex;align-items:center;justify-content:center}
    .product-cover img{width:100%;height:100%;object-fit:cover;border-radius:10px}
    .product-body{display:flex;flex:1;flex-direction:column;padding:20px}
    .product-meta{display:flex;justify-content:space-between;gap:10px;color:#8490a3;font-size:12px}
    .product-body h2{margin:9px 0 8px;color:#172e57;font-size:20px;line-height:1.4}
    .product-summary{display:-webkit-box;overflow:hidden;margin:0;color:#67748a;font-size:14px;line-height:1.75;-webkit-box-orient:vertical;-webkit-line-clamp:3}
    .product-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:18px}
    .product-stats{color:#8a96a8;font-size:12px}
    .product-link{padding:8px 13px;border-radius:7px;background:#eaf1fc;color:var(--theme);font-size:13px;font-weight:700}
    .product-link:hover{background:var(--theme);color:#fff}
    .pagination{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin-top:42px}
    .pagination a{min-width:36px;padding:6px 11px;text-align:center;border:1px solid #d7e0ed;border-radius:7px;background:#fff;color:#52627a;font-size:13px}
    .pagination a.active,.pagination a:hover{border-color:var(--theme);background:var(--theme);color:#fff}
    @media(max-width:1050px){
      .nav-link{padding-left:8px;padding-right:8px}
      .logo{min-width:160px}
      .header-inner{gap:12px}
    }
    @media(max-width:820px){
      .topbar .container{align-items:flex-start;flex-direction:column;gap:2px;padding-top:7px;padding-bottom:7px}
      .topbar-links{gap:14px}
      .main-nav{display:none}
      .hamburger{display:block}
      .member-btn{display:none}
      .header-inner{min-height:68px}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
      .product-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:560px){
      .container{width:min(100% - 28px,1180px)}
      .account-btn{display:none}
      .productlist-main{padding-top:40px}
      .productlist-main h1{font-size:31px}
      .product-grid{grid-template-columns:1fr}
      .product-cover{height:205px}
      .footer-grid{grid-template-columns:1fr;gap:25px}
      .footer-bottom{align-items:flex-start;flex-direction:column;gap:6px}
    }