:root{
      --theme:#0B3D91;
      --ink:#172238;
      --muted:#667085;
      --line:#e6eaf0;
      --soft:#f5f7fb;
      --white:#fff;
      --shadow:0 16px 40px rgba(20,39,77,.09);
      --radius:16px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#f8faff;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:#101b31;color:#cbd5e8;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:30px}
    .logo{display:inline-flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:var(--theme);white-space:nowrap}
    .logo img{width:36px;height:36px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:center;justify-content:center;gap:4px;list-style:none;margin:0;padding:0}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:5px;padding:25px 13px;font-size:15px;font-weight:600;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: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:320px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:0 0 16px 16px;box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:.2s;z-index:30}
    .mega-menu{width:min(850px,calc(100vw - 30px))}
    .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)}
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
    .dropdown-title,.mega-head{margin:0 0 15px;padding-bottom:12px;border-bottom:1px solid var(--line)}
    .mega-head{display:flex;align-items:baseline;justify-content:space-between;gap:15px}
    .mega-head strong{font-size:17px;color:var(--theme)}
    .mega-head span{font-size:12px;color:var(--muted)}
    .dropdown-list{display:grid;gap:8px}
    .dropdown-list a{display:block;padding:5px 0;font-size:14px;border-bottom:1px dashed #edf0f5}
    .dropdown-list a:hover,.mega-card:hover strong,.mega-categories a:hover{color:var(--theme)}
    .dropdown-more,.mega-footer{display:flex;justify-content:space-between;margin-top:15px;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;min-width:0;padding:12px;border:1px solid var(--line);border-radius:11px;background:#fbfcff}
    .mega-card img{width:34px;height:34px;object-fit:contain;margin-bottom:7px}
    .mega-card img.cover{width:100%;height:72px;object-fit:cover;border-radius:7px}
    .mega-card strong{display:block;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .mega-card p{margin:4px 0 0;color:var(--muted);font-size:11px;line-height:1.5}
    .mega-meta{display:flex;flex-wrap:wrap;gap:4px 9px;margin-top:6px;color:var(--muted);font-size:10px}
    .mega-categories{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
    .mega-categories a{padding:4px 10px;border-radius:20px;background:#f0f4fb;color:#40516f;font-size:12px}
    .header-btns{display:flex;align-items:center;gap:12px;white-space:nowrap}
    .member-entry{color:var(--theme);font-size:14px;font-weight:700}
    .account-entry{padding:8px 15px;background:var(--theme);color:#fff;border-radius:8px;font-size:13px}
    .hamburger{display:none;width:42px;height:40px;border:1px solid var(--line);border-radius:8px;background:#fff;padding:8px;cursor:pointer}
    .hamburger span{display:block;height:2px;margin:5px 0;background:var(--theme);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(8,17,35,.48);opacity:0;visibility:hidden;transition:.25s;z-index:50}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:-360px;width:min(360px,90vw);height:100vh;overflow:auto;background:#fff;z-index:60;transition:.28s;box-shadow:-12px 0 30px rgba(0,0,0,.15)}
    .mobile-drawer.open{right:0}
    .drawer-head{display:flex;align-items:center;gap:15px;padding:20px;border-bottom:1px solid var(--line);font-weight:700}
    .drawer-head>a{margin-left:auto;color:var(--theme)}
    .drawer-close{border:0;background:none;font-size:28px;line-height:1;cursor:pointer;color:var(--muted)}
    .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:none;text-align:left;font-size:15px;color:var(--ink);cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--theme);font-size:20px}
    .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}
    .drawer-lock{overflow:hidden}
    .productlist-main{padding:52px 0 80px}
    .page-heading{text-align:center;max-width:760px;margin:0 auto 34px}
    .eyebrow{display:inline-flex;padding:5px 12px;border-radius:30px;background:#eaf1ff;color:var(--theme);font-size:12px;font-weight:700;letter-spacing:.08em}
    .page-heading h1{margin:14px 0 10px;font-size:clamp(30px,4vw,48px);line-height:1.2;color:#14213b}
    .page-heading p{margin:0;color:var(--muted);font-size:16px}
    .product-toolbar{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:22px;padding:16px 20px;background:#fff;border:1px solid var(--line);border-radius:14px}
    .product-toolbar strong{font-size:18px}
    .product-toolbar span{color:var(--muted);font-size:14px}
    .category-chips{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end}
    .category-chips a{padding:6px 12px;border:1px solid #dce4f1;border-radius:30px;color:#4e607c;font-size:13px}
    .category-chips a:hover{border-color:var(--theme);color:var(--theme)}
    .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 5px 18px rgba(25,45,85,.04);transition:.2s}
    .product-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cbd9f3}
    .product-cover{height:190px;background:linear-gradient(135deg,#eaf1ff,#f8fbff);overflow:hidden}
    .product-cover img{width:100%;height:100%;object-fit:cover}
    .product-body{display:flex;flex:1;flex-direction:column;padding:20px}
    .product-label{display:inline-flex;align-self:flex-start;margin-bottom:9px;padding:4px 9px;background:#eef4ff;color:var(--theme);border-radius:20px;font-size:11px}
    .product-body h2{margin:0 0 8px;font-size:20px;line-height:1.35}
    .product-summary{display:-webkit-box;overflow:hidden;margin:0;color:var(--muted);font-size:14px;line-height:1.75;-webkit-box-orient:vertical;-webkit-line-clamp:3}
    .product-meta{display:flex;justify-content:space-between;gap:10px;margin-top:auto;padding-top:18px;color:#8792a5;font-size:12px}
    .product-link{display:inline-flex;align-items:center;gap:8px;margin-top:15px;color:var(--theme);font-size:14px;font-weight:700}
    .pagination{display:flex;justify-content:center;gap:8px;margin-top:40px;flex-wrap:wrap}
    .pagination a{min-width:38px;padding:7px 12px;text-align:center;background:#fff;border:1px solid var(--line);border-radius:8px;color:#52627d;font-size:13px}
    .pagination a:hover,.pagination a.active{background:var(--theme);border-color:var(--theme);color:#fff}
    .footer{background:#101b31;color:#b9c4d9}
    .footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:38px;padding:54px 0 45px}
    .footer .logo{color:#fff;margin-bottom:13px}
    .footer-brand p{margin:0;color:#9eabc2;font-size:13px;line-height:1.8}
    .footer h3{margin:0 0 16px;color:#fff;font-size:15px}
    .footer-links{display:grid;gap:7px}
    .footer-links a,.footer-contact a{color:#aebbd1;font-size:13px}
    .footer-links a:hover,.footer-contact a:hover{color:#fff}
    .footer-contact{display:grid;gap:8px;font-size:13px}
    .footer-social{color:#aebbd1;font-size:13px}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.1)}
    .footer-bottom-inner{display:flex;justify-content:space-between;gap:20px;padding:17px 0;color:#8e9bb3;font-size:12px}
    @media(max-width:1080px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-btns{margin-left:auto}
      .product-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:700px){
      .container{width:min(100% - 28px,1180px)}
      .topbar-inner{align-items:flex-start;flex-direction:column;padding:8px 0;gap:2px}
      .topbar-contact{gap:12px;flex-wrap:wrap}
      .header-inner{min-height:68px;gap:10px}
      .member-entry{display:none}
      .account-entry{padding:7px 10px}
      .mega-grid{grid-template-columns:1fr 1fr}
      .productlist-main{padding:35px 0 55px}
      .page-heading{margin-bottom:25px}
      .page-heading h1{font-size:32px}
      .product-toolbar{align-items:flex-start;flex-direction:column}
      .category-chips{justify-content:flex-start}
      .product-grid{grid-template-columns:1fr;gap:16px}
      .product-cover{height:180px}
      .footer-main{grid-template-columns:1fr 1fr;gap:28px 20px;padding:38px 0}
      .footer-brand{grid-column:1/-1}
      .footer-bottom-inner{align-items:flex-start;flex-direction:column;gap:5px}
    }
    @media(max-width:430px){
      .footer-main{grid-template-columns:1fr}
      .footer-brand{grid-column:auto}
      .mega-menu{left:auto;right:-10px;transform:translateY(8px)}
      .nav-item:hover>.mega-menu,.nav-item:focus-within>.mega-menu{transform:translateY(0)}
    }