:root{
      --theme:#0B3D91;
      --ink:#172033;
      --muted:#687386;
      --line:#e5eaf2;
      --soft:#f4f7fb;
      --gold:#c89435;
      --white:#fff;
      --shadow:0 16px 42px rgba(21,44,83,.09);
    }
    *{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}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}

    .topbar{background:#101827;color:#cbd5e1;font-size:13px}
    .topbar .container{height:36px;display:flex;align-items:center;justify-content:space-between}
    .topbar a{color:#fff}
    .topbar-links{display:flex;gap:24px}

    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{height:78px;display:flex;align-items:center;gap:38px}
    .logo{display:flex;align-items:center;gap:10px;white-space:nowrap;color:var(--theme);font-weight:800;font-size:19px}
    .logo img{width:36px;height:36px;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:flex;align-items:center;height:78px;padding:0 14px;font-size:15px;font-weight:600;color:#344054}
    .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);margin:0 0 4px 8px}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% - 1px);left:50%;transform:translateX(-50%) translateY(8px);opacity:0;visibility:hidden;transition:.2s ease;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:var(--shadow);padding:18px;z-index:30}
    .dropdown-panel{width:260px}
    .dropdown-panel a{display:block;padding:8px 10px;border-bottom:1px solid #f0f2f6;font-size:14px}
    .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)}
    .nav-item>.dropdown-panel:before,.nav-item>.mega-menu:before{content:"";position:absolute;top:-14px;left:0;right:0;height:14px}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
    .mega-card{min-height:72px;display:flex;flex-direction:column;justify-content:center;gap:2px;padding:11px;border:1px solid var(--line);border-radius:10px;background:#fbfcfe}
    .mega-card:hover{border-color:#a9bedf;background:#f2f6fc}
    .mega-card img{width:32px;height:32px;object-fit:contain;margin-bottom:3px}
    .mega-card strong{font-size:13px;color:#182b4b}
    .mega-card small{font-size:11px;color:var(--muted);line-height:1.5}
    .mega-footer{display:block;text-align:center;margin-top:14px;padding-top:12px;border-top:1px solid var(--line);color:var(--theme);font-size:13px;font-weight:700}
    .header-btns{display:flex;align-items:center;gap:12px;white-space:nowrap}
    .member-link{font-size:14px;color:var(--theme);font-weight:700}
    .open-account{padding:8px 16px;background:var(--theme);color:#fff;border-radius:7px;font-size:13px;font-weight:700}
    .hamburger{display:none;border:0;background:none;padding:8px;cursor:pointer}
    .hamburger span{display:block;width:22px;height:2px;background:var(--ink);margin:4px 0;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{display:none;position:fixed;inset:0;background:rgba(6,15,30,.5);z-index:50}
    .mobile-drawer{position:fixed;top:0;right:0;width:min(360px,88vw);height:100vh;background:#fff;z-index:51;transform:translateX(105%);transition:.25s ease;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-overlay.open{display:block}
    .drawer-head{display:flex;align-items:center;gap:14px;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:#667085}
    .drawer-menu{padding:12px 20px 40px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid #edf0f5;background:none;text-align:left;color:var(--ink);font-size:15px;font-family:inherit;cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--theme);font-size:20px}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:none;padding:4px 0 8px 16px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:7px 0;color:var(--muted);font-size:14px}

    .productlist-main{padding:54px 0 78px}
    .page-heading{text-align:center;max-width:760px;margin:0 auto 30px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.12em}
    .eyebrow:before{content:"";width:24px;height:2px;background:var(--gold)}
    .page-heading h1{margin:10px 0 12px;font-size:clamp(30px,4vw,48px);line-height:1.2;color:#121c2e}
    .page-heading p{margin:0;color:var(--muted);font-size:16px}
    .category-strip{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:28px auto 42px}
    .category-strip a{padding:8px 17px;border:1px solid #d8e1ef;border-radius:30px;background:#fff;color:#506078;font-size:13px}
    .category-strip 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:16px;overflow:hidden;box-shadow:0 8px 26px rgba(23,47,83,.05);transition:.2s ease}
    .product-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .product-cover{height:190px;padding:20px;background:linear-gradient(135deg,#eaf1fb,#f9fbff);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:21px}
    .product-body h2{margin:0 0 9px;font-size:20px;line-height:1.35;color:#172d50}
    .product-summary{margin:0 0 16px;color:#657287;font-size:14px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
    .product-meta{display:flex;flex-wrap:wrap;gap:8px 15px;margin-top:auto;padding-top:15px;border-top:1px solid #edf0f5;color:#8994a5;font-size:12px}
    .product-price{margin:13px 0 0;color:var(--gold);font-size:17px;font-weight:800}
    .product-cta{display:inline-flex;align-items:center;gap:8px;margin-top:16px;color:var(--theme);font-size:14px;font-weight:800}
    .product-cta:after{content:"→";font-size:18px}
    .pagination{display:flex;justify-content:center;gap:8px;margin-top:42px}
    .pagination a{min-width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border:1px solid #dbe3ef;border-radius:7px;background:#fff;color:#59677b;font-size:13px}
    .pagination a:hover,.pagination a.active{background:var(--theme);border-color:var(--theme);color:#fff}

    .footer{background:#111b2c;color:#b8c3d3;padding:48px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1fr;gap:36px}
    .footer-brand strong{color:#fff;font-size:20px}
    .footer p{margin:8px 0;font-size:13px}
    .footer h3{margin:0 0 14px;color:#fff;font-size:15px}
    .footer-grid>div:not(.footer-brand) a{display:block;margin:7px 0;color:#b8c3d3;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,.12);font-size:12px;color:#8997aa}

    @media(max-width:1050px){
      .header-inner{gap:15px}.nav-link{padding:0 8px}.mega-menu{width:650px}
    }
    @media(max-width:820px){
      .topbar .container{height:auto;min-height:36px;padding-top:7px;padding-bottom:7px}
      .topbar .container,.topbar-links{flex-wrap:wrap;gap:4px 15px}
      .main-nav{display:none}.header-inner{height:68px}
      .header-btns .member-link,.header-btns .open-account{display:none}
      .hamburger{display:block}
      .product-grid{grid-template-columns:repeat(2,1fr)}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:560px){
      .container{width:min(100% - 28px,1180px)}
      .productlist-main{padding:38px 0 58px}
      .page-heading h1{font-size:32px}
      .product-grid{grid-template-columns:1fr;gap:16px}
      .product-cover{height:175px}
      .footer-grid{grid-template-columns:1fr;gap:24px}
      .footer-bottom{display:block}.footer-bottom span{display:block;margin-top:5px}
    }