:root{
      --theme:#0B3D91;
      --theme-dark:#082b67;
      --ink:#14233d;
      --muted:#68758b;
      --line:#dfe7f1;
      --bg:#f5f8fc;
      --white:#fff;
      --accent:#25d6a2;
      --shadow:0 18px 45px rgba(13,44,85,.10);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:var(--bg);font-family:"Noto Sans 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:#071a38;color:#c8d5e8;font-size:13px}
    .topbar .container{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:16px}
    .topbar strong{color:#fff}
    .topbar a{margin-left:20px;color:#c8d5e8}
    .topbar a:hover{color:#fff}

    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid #edf1f6}
    .header-inner{min-height:76px;display:flex;align-items:center;gap:34px}
    .logo{display:flex;align-items:center;gap:10px;white-space:nowrap;color:var(--theme);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:center;justify-content:center;gap:4px;padding:0;margin:0;list-style:none}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:6px;padding:25px 14px;color:#34435d;font-size:15px;font-weight:650;white-space:nowrap}
    .nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--theme)}
    .has-arrow:after{content:"";width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px)}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translate(-50%,8px);width:270px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:0 0 16px 16px;box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:.2s ease}
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
    .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)}
    .dropdown-panel a{display:block;padding:8px 10px;color:#44536b;border-radius:8px;font-size:14px}
    .dropdown-panel a:hover{background:#eef4fc;color:var(--theme)}
    .mega-menu{width:650px;left:50%;padding:22px}
    .mega-title{margin:0 0 12px;color:var(--theme);font-size:14px;font-weight:800}
    .mega-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
    .mega-card{display:flex;align-items:center;gap:10px;min-width:0;padding:10px;border:1px solid #edf1f6;border-radius:11px;background:#fbfcfe}
    .mega-card:hover{border-color:#a9c3e8;background:#f4f8fe}
    .mega-card img{width:38px;height:38px;object-fit:cover;border-radius:8px;background:#e8eef7;flex:none}
    .mega-card b,.mega-card span{display:block;overflow:hidden;text-overflow:ellipsis}
    .mega-card b{font-size:13px;white-space:nowrap}
    .mega-card span span{color:var(--muted);font-size:11px;line-height:1.45;white-space:nowrap}
    .mega-links{display:flex;flex-wrap:wrap;gap:8px}
    .mega-links a{padding:6px 10px;border-radius:20px;background:#f1f5fa;color:#506078;font-size:12px}
    .mega-links a:hover{background:#dceafb;color:var(--theme)}
    .mega-footer{display:block;margin-top:16px;padding-top:13px;border-top:1px solid var(--line);color:var(--theme);font-size:13px;font-weight:700}
    .header-btns{display:flex;align-items:center;gap:14px;white-space:nowrap}
    .header-btns>a:first-child{color:var(--theme);font-size:14px;font-weight:650}
    .account-btn{padding:9px 15px;color:#fff!important;background:var(--theme);border-radius:9px;font-size:13px!important}
    .account-btn:hover{background:var(--theme-dark)}
    .hamburger{display:none;width:42px;height:38px;padding:8px;border:1px solid var(--line);background:#fff;border-radius:8px;cursor:pointer}
    .hamburger span{display:block;width:22px;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;z-index:40;background:rgba(3,17,39,.54);opacity:0;visibility:hidden;transition:.25s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:0;bottom:0;z-index:41;width:min(380px,88vw);padding:22px;background:#fff;box-shadow:-15px 0 40px rgba(3,20,49,.2);transform:translateX(105%);transition:.3s;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:14px;padding-bottom:18px;border-bottom:1px solid var(--line);font-weight:750;color:var(--theme)}
    .drawer-head a{margin-left:auto;padding:6px 13px;color:#fff;background:var(--theme);border-radius:7px;font-size:13px}
    .drawer-close{border:0;background:transparent;color:#6c7890;font-size:29px;line-height:1;cursor:pointer}
    .drawer-menu{padding-top:12px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 4px;border:0;border-bottom:1px solid #edf1f6;background:transparent;text-align:left;color:#273955;font-weight:650;cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--theme);font-size:19px;font-weight:400}
    .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:7px 4px;color:var(--muted);font-size:14px}

    .productlist-main{padding:58px 0 78px}
    .page-heading{text-align:center;max-width:760px;margin:0 auto 34px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--accent)}
    .page-heading h1{margin:10px 0 12px;font-size:clamp(30px,4vw,48px);line-height:1.2;color:#10294e}
    .page-heading p{margin:0;color:var(--muted);font-size:16px}
    .category-strip{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:0 auto 38px}
    .category-strip a{padding:8px 17px;border:1px solid #d7e2f0;border-radius:30px;background:#fff;color:#52627b;font-size:14px;transition:.2s}
    .category-strip a:hover,.category-strip a.active{border-color:var(--theme);background: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;overflow:hidden;background:#fff;border:1px solid #e5ebf3;border-radius:var(--radius);box-shadow:0 8px 25px rgba(21,51,90,.05);transition:.25s}
    .product-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#bdd0e8}
    .product-cover{height:190px;display:flex;align-items:center;justify-content:center;overflow:hidden;background:linear-gradient(135deg,#e9f1fc,#f7fbff)}
    .product-cover img{width:100%;height:100%;object-fit:cover}
    .product-cover img[src=""]{display:none}
    .product-body{display:flex;flex:1;flex-direction:column;padding:22px}
    .product-label{margin-bottom:7px;color:var(--theme);font-size:12px;font-weight:750}
    .product-body h2{margin:0 0 9px;color:#17345f;font-size:20px;line-height:1.35}
    .product-summary{display:-webkit-box;overflow:hidden;margin:0;color:var(--muted);font-size:14px;line-height:1.8;-webkit-line-clamp:3;-webkit-box-orient:vertical}
    .product-meta{display:flex;flex-wrap:wrap;gap:8px 15px;margin-top:auto;padding-top:18px;color:#8390a4;font-size:12px}
    .product-meta span{white-space:nowrap}
    .product-foot{display:flex;align-items:center;justify-content:space-between;margin-top:18px;padding-top:15px;border-top:1px solid #edf1f6}
    .product-price{color:var(--theme);font-size:14px;font-weight:800}
    .product-link{color:var(--theme);font-size:14px;font-weight:750}
    .product-link:after{content:" →";color:var(--accent)}
    .pagination{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin-top:42px}
    .pagination a{min-width:38px;padding:7px 12px;border:1px solid #d9e3ef;border-radius:8px;background:#fff;color:#596980;text-align:center;font-size:14px}
    .pagination a:hover,.pagination a.current,.pagination a.active{background:var(--theme);border-color:var(--theme);color:#fff}

    .footer{padding:52px 0 20px;background:#081b3a;color:#b9c7db}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:35px}
    .footer h3{margin:0 0 13px;color:#fff;font-size:20px}
    .footer h4{margin:0 0 14px;color:#fff;font-size:15px}
    .footer p{margin:6px 0;font-size:13px;line-height:1.8}
    .footer-grid>div:not(.footer-brand) a{display:block;margin:6px 0;color:#b9c7db;font-size:13px}
    .footer-grid 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,.14);font-size:12px;color:#8799b5}

    @media (max-width:980px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-inner{justify-content:space-between}
      .product-grid{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width:620px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{align-items:flex-start;flex-direction:column;padding:8px 0;gap:2px}
      .topbar a{margin:0 14px 0 0}
      .header-inner{min-height:68px;gap:10px}
      .logo{font-size:16px}
      .logo img{width:32px;height:32px}
      .header-btns{gap:8px}
      .header-btns>a:first-child{display:none}
      .productlist-main{padding:40px 0 58px}
      .page-heading{margin-bottom:26px}
      .page-heading h1{font-size:32px}
      .page-heading p{font-size:14px}
      .category-strip{justify-content:flex-start;overflow:auto;flex-wrap:nowrap;padding-bottom:4px}
      .category-strip a{white-space:nowrap}
      .product-grid{grid-template-columns:1fr;gap:17px}
      .product-cover{height:180px}
      .footer-grid{grid-template-columns:1fr;gap:25px}
      .footer-bottom{align-items:flex-start;flex-direction:column;gap:8px}
    }