:root{
      --primary:#0B3D91;
      --primary-dark:#082d6b;
      --ink:#17243a;
      --muted:#64748b;
      --line:#e5eaf2;
      --bg:#f5f7fb;
      --card:#fff;
      --shadow:0 12px 34px rgba(16,39,79,.08);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:var(--bg);font:15px/1.7 Arial,"Microsoft YaHei","微软雅黑",sans-serif}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button{font:inherit}
    .container{width:min(1180px,calc(100% - 36px));margin:0 auto}
    .topbar{background:#10284e;color:#dce8fb;font-size:13px}
    .topbar .container{height:36px;display:flex;align-items:center;justify-content:space-between}
    .topbar a{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:flex;align-items:center;gap:10px;min-width:190px;color:var(--primary);font-size:19px;font-weight:800}
    .logo img{width:38px;height:38px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:stretch;justify-content:center;gap:4px;list-style:none;margin:0;padding:0}
    .nav-item{position:relative}
    .nav-link{display:block;padding:25px 14px;color:#273852;font-weight:600;white-space:nowrap}
    .nav-link:hover,.nav-link:focus{color:var(--primary)}
    .has-arrow:after{content:"⌄";margin-left:6px;color:#8b98aa}
    .dropdown-panel,.mega-menu{
      position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);
      width:330px;padding:20px;background:#fff;border:1px solid var(--line);
      border-radius:0 0 14px 14px;box-shadow:var(--shadow);opacity:0;visibility:hidden;
      transition:.2s ease;pointer-events:none
    }
    .mega-menu{width:720px}
    .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:translateX(-50%) translateY(0);pointer-events:auto
    }
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
    .drop-title,.mega-title{display:block;margin-bottom:13px;color:var(--primary);font-size:17px}
    .drop-list{display:grid;gap:8px}
    .drop-list a{padding:7px 0;border-bottom:1px solid #eef1f6;color:#44546c}
    .drop-list a:hover{color:var(--primary)}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .mega-card{display:block;padding:11px;border:1px solid var(--line);border-radius:10px;background:#fbfcfe;overflow:hidden}
    .mega-card:hover{border-color:#9db4df;background:#f1f6ff}
    .mega-card img{width:100%;height:62px;object-fit:contain;margin-bottom:8px}
    .mega-card strong,.mega-card small{display:block}
    .mega-card strong{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .mega-card small{color:var(--muted);font-size:11px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .mega-footer{display:block;margin-top:16px;padding-top:13px;border-top:1px solid var(--line);color:var(--primary);font-weight:700}
    .header-btns{display:flex;align-items:center;gap:12px;white-space:nowrap}
    .member-link{color:var(--primary);font-weight:700}
    .open-account{padding:9px 15px;background:var(--primary);border-radius:7px;color:#fff;font-weight:700}
    .open-account:hover{background:var(--primary-dark)}
    .hamburger{display:none;width:42px;height:40px;border:1px solid var(--line);border-radius:7px;background:#fff;padding:8px;cursor:pointer}
    .hamburger span{display:block;height:2px;margin:5px 0;background:var(--primary);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{position:fixed;inset:0;background:rgba(5,18,39,.5);opacity:0;visibility:hidden;z-index:40;transition:.25s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:0;width:min(390px,88vw);height:100vh;background:#fff;z-index:41;transform:translateX(100%);transition:.25s;overflow:auto}
    .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);color:var(--primary);font-weight:700}
    .drawer-head span{flex:1}
    .drawer-head a{padding:6px 11px;background:var(--primary);border-radius:5px;color:#fff}
    .drawer-close{border:0;background:none;color:#607089;font-size:28px;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: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 0 8px 15px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:7px 0;color:var(--muted);font-size:14px}
    .footer{margin-top:70px;background:#10284e;color:#c8d5e9}
    .footer .container{padding:44px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:35px}
    .footer h3{margin:0 0 13px;color:#fff;font-size:16px}
    .footer p{margin:5px 0;font-size:13px}
    .footer a{display:block;margin:6px 0;color:#c8d5e9;font-size:13px}
    .footer a:hover{color:#fff}
    .footer-brand strong{display:block;margin-bottom:12px;color:#fff;font-size:21px}
    .footer-bottom{margin-top:30px;padding-top:18px;border-top:1px solid rgba(255,255,255,.14);font-size:12px;color:#aebed6}
    .productlist-main{padding:52px 0 10px}
    .page-heading{padding:34px 0 30px;text-align:center}
    .page-kicker{margin:0 0 8px;color:var(--primary);font-size:13px;font-weight:800;letter-spacing:2px}
    .page-heading h1{margin:0;color:#152846;font-size:clamp(28px,4vw,44px);line-height:1.25}
    .page-heading p{max-width:720px;margin:14px auto 0;color:var(--muted)}
    .category-nav{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:0 0 38px}
    .category-nav a{padding:9px 17px;border:1px solid #ccd8eb;border-radius:999px;background:#fff;color:#3b506d}
    .category-nav a:hover,.category-nav a.active{border-color:var(--primary);background:var(--primary);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:var(--card);border:1px solid var(--line);border-radius:15px;overflow:hidden;box-shadow:0 5px 20px rgba(23,45,79,.04);transition:.2s}
    .product-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#b4c7e7}
    .product-cover{height:190px;padding:20px;background:#f0f5fd;display:flex;align-items:center;justify-content:center}
    .product-cover img{width:100%;height:100%;object-fit:contain}
    .product-body{display:flex;flex:1;flex-direction:column;padding:20px}
    .product-body h2{margin:0 0 9px;font-size:20px;line-height:1.35;color:#172e52}
    .product-summary{display:-webkit-box;overflow:hidden;margin:0 0 15px;color:var(--muted);-webkit-box-orient:vertical;-webkit-line-clamp:3}
    .product-meta{display:flex;justify-content:space-between;gap:8px;margin-top:auto;padding-top:14px;border-top:1px solid #edf0f5;color:#8a96a8;font-size:12px}
    .product-cta{display:inline-flex;align-items:center;justify-content:center;margin-top:16px;padding:10px 14px;border-radius:7px;background:#eaf1fc;color:var(--primary);font-weight:700}
    .product-cta:hover{background:var(--primary);color:#fff}
    .pagination{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin:42px 0 15px}
    .pagination a{min-width:38px;padding:7px 12px;border:1px solid #d4ddeb;border-radius:6px;background:#fff;text-align:center;color:#50627c}
    .pagination a:hover,.pagination a.current,.pagination a.active{background:var(--primary);border-color:var(--primary);color:#fff}
    @media(max-width:1050px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-inner{justify-content:space-between}
      .header-btns{margin-left:auto}
      .mega-menu{display:none}
    }
    @media(max-width:760px){
      .container{width:min(100% - 28px,680px)}
      .topbar .container{height:auto;min-height:38px;gap:5px;flex-wrap:wrap;padding:7px 0}
      .top-contact{font-size:12px}
      .logo{min-width:0;font-size:16px}
      .logo img{width:32px;height:32px}
      .member-link{display:none}
      .open-account{padding:7px 10px;font-size:13px}
      .productlist-main{padding-top:24px}
      .page-heading{padding:25px 0}
      .product-grid{grid-template-columns:1fr}
      .product-cover{height:205px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:25px}
    }
    @media(max-width:480px){
      .footer-grid{grid-template-columns:1fr}
      .top-contact{width:100%}
      .page-heading h1{font-size:30px}
    }