:root{
      --theme:#0B3D91;
      --deep:#071936;
      --ice:#eef7ff;
      --line:#dbe8f5;
      --text:#172b4d;
      --muted:#6c7d95;
      --white:#fff;
      --shadow:0 16px 45px rgba(7,35,75,.10);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--text);background:#f5f9fd;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}
    .container{width:min(1180px,calc(100% - 40px));margin:auto}
    .topbar{height:38px;background:var(--deep);color:#dbe9fa;font-size:13px}
    .topbar .container{height:100%;display:flex;align-items:center;justify-content:space-between}
    .topbar-info{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{height:78px;display:flex;align-items:center;gap:34px}
    .logo{display:flex;align-items:center;gap:10px;min-width:190px;color:var(--deep);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;list-style:none;padding:0;margin:0}
    .nav-item{position:relative}
    .nav-link{display:block;padding:25px 14px;color:#263c5b;font-size:14px;white-space:nowrap}
    .nav-link:hover,.nav-link:focus{color:var(--theme)}
    .has-arrow:after{content:"⌄";font-size:12px;margin-left:6px;color:#8da0b6}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);visibility:hidden;opacity:0;background:#fff;border:1px solid var(--line);border-radius:0 0 16px 16px;box-shadow:var(--shadow);transition:.2s;z-index:30}
    .dropdown-panel{width:260px;padding:12px}
    .dropdown-panel a{display:block;padding:9px 12px;border-radius:8px;font-size:13px}
    .dropdown-panel a:hover{background:var(--ice);color:var(--theme)}
    .mega-menu{width:650px;padding:22px}
    .nav-item:hover>.mega-menu,.nav-item:focus-within>.mega-menu,.nav-item:hover>.dropdown-panel,.nav-item:focus-within>.dropdown-panel{visibility:visible;opacity:1}
    .mega-title{font-weight:800;color:var(--deep);font-size:15px;margin-bottom:13px}
    .mega-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
    .mega-card{display:flex;gap:10px;padding:10px;border:1px solid var(--line);border-radius:10px;background:#fbfdff}
    .mega-card:hover{border-color:#9bbde8;background:var(--ice)}
    .mega-card img{width:38px;height:38px;object-fit:contain;border-radius:7px}
    .mega-card strong{display:block;font-size:13px;color:var(--deep);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .mega-card small{display:block;color:var(--muted);font-size:11px;line-height:1.45}
    .mega-links{display:flex;flex-wrap:wrap;gap:8px}
    .mega-links a{padding:5px 10px;background:var(--ice);border-radius:30px;font-size:12px;color:var(--theme)}
    .mega-footer{display:block;margin-top:17px;padding-top:13px;border-top:1px solid var(--line);color:var(--theme);font-weight:700;font-size:13px}
    .header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}
    .member-link{font-size:13px;color:var(--theme);font-weight:700}
    .open-account{padding:8px 15px;background:var(--theme);color:#fff;border-radius:8px;font-size:13px}
    .hamburger{display:none;border:0;background:transparent;padding:8px;cursor:pointer}
    .hamburger span{display:block;width:23px;height:2px;background:var(--deep);margin:5px 0;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(3,18,42,.48);opacity:0;visibility:hidden;transition:.2s;z-index:39}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;right:0;top:0;bottom:0;width:min(360px,88vw);background:#fff;transform:translateX(100%);transition:.25s;z-index:40;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{height:72px;padding:0 20px;display:flex;align-items:center;gap:14px;border-bottom:1px solid var(--line);font-weight:800}
    .drawer-head>a{margin-left:auto;background:var(--theme);color:#fff;border-radius:7px;padding:5px 10px;font-size:12px}
    .drawer-close{border:0;background:transparent;font-size:28px;color:var(--muted);cursor:pointer}
    .drawer-menu{padding:12px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 4px;border:0;border-bottom:1px solid #edf2f8;background:transparent;text-align:left;font:inherit;color:var(--text);cursor:pointer}
    .drawer-toggle:after{content:"＋";float:right;color:var(--theme)}
    .drawer-toggle.active:after{content:"－"}
    .drawer-submenu{display:none;padding:5px 12px;background:#f5f9fd;border-radius:8px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:7px 0;color:var(--muted);font-size:13px}
    .footer{margin-top:70px;background:var(--deep);color:#d4e0f0;padding:48px 0 18px}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:35px}
    .footer-brand{display:flex;align-items:center;gap:9px;color:#fff;font-size:18px;font-weight:800}
    .footer-brand img{width:35px;height:35px;object-fit:contain}
    .footer p{font-size:13px;color:#aebed2;max-width:280px}
    .footer h3{font-size:14px;color:#fff;margin:0 0 13px}
    .footer-links{display:flex;flex-direction:column;gap:6px;font-size:13px;color:#adbed2}
    .footer-links a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;border-top:1px solid rgba(255,255,255,.14);margin-top:35px;padding-top:15px;color:#9eb0c7;font-size:12px}
    .productlist-main{padding:58px 0 10px}
    .page-heading{text-align:center;max-width:760px;margin:0 auto 35px}
    .eyebrow{display:inline-block;color:var(--theme);background:#e4f0ff;border-radius:30px;padding:4px 13px;font-size:12px;font-weight:800;letter-spacing:1px}
    .page-heading h1{margin:13px 0 9px;color:var(--deep);font-size:clamp(28px,4vw,44px);line-height:1.25}
    .page-heading p{margin:0;color:var(--muted);font-size:15px}
    .category-tabs{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:0 auto 34px}
    .category-tabs a{padding:8px 17px;border:1px solid var(--line);border-radius:30px;background:#fff;color:#526b89;font-size:13px;transition:.2s}
    .category-tabs a:hover,.category-tabs a:first-child{background:var(--theme);border-color:var(--theme);color:#fff}
    .product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
    .product-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:0 8px 24px rgba(15,52,95,.05);transition:.25s}
    .product-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#9dbce1}
    .product-image{height:190px;padding:24px;background:linear-gradient(145deg,#edf7ff,#f8fbff);display:flex;align-items:center;justify-content:center}
    .product-image img{width:100%;height:100%;object-fit:contain}
    .product-body{padding:20px 21px 21px;display:flex;flex-direction:column;flex:1}
    .product-body h2{font-size:18px;line-height:1.4;color:var(--deep);margin:0 0 8px}
    .product-summary{font-size:13px;color:var(--muted);margin:0 0 15px;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden}
    .product-meta{display:flex;justify-content:space-between;gap:10px;color:#8a9bb0;font-size:12px;border-top:1px solid #edf2f7;padding-top:12px;margin-top:auto}
    .product-meta span:last-child{color:var(--theme)}
    .product-cta{margin-top:16px;color:var(--theme);font-size:13px;font-weight:800}
    .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 var(--line);border-radius:7px;background:#fff;color:#58708e;font-size:13px}
    .pagination a:hover,.pagination a.active{background:var(--theme);border-color:var(--theme);color:#fff}
    @media(max-width:1050px){
      .header-inner{gap:15px}.logo{min-width:155px}.nav-link{padding-left:8px;padding-right:8px}
      .open-account{display:none}
    }
    @media(max-width:800px){
      .topbar .container{font-size:11px}.topbar-info{gap:9px}
      .main-nav{display:none}.header-inner{height:68px}.header-btns{margin-left:auto}.hamburger{display:block}
      .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)}
      .topbar{height:auto;padding:7px 0}.topbar .container{align-items:flex-start;gap:5px;flex-direction:column}
      .topbar-info{width:100%;justify-content:space-between}
      .member-link{display:none}.productlist-main{padding-top:38px}
      .product-grid{grid-template-columns:1fr;gap:16px}
      .product-image{height:175px}
      .footer-grid{grid-template-columns:1fr;gap:24px}
      .footer-bottom{display:block}.footer-bottom span{display:block;margin-top:5px}
    }