:root{
      --主题色:#0B3D91;
      --深色:#101828;
      --浅色:#f5f7fb;
      --边框:#e4e8ef;
      --文字:#263247;
      --次文字:#667085;
      --白色:#fff;
      --阴影:0 18px 45px rgba(16,24,40,.09);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--文字);background:var(--浅色);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}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}

    .topbar{background:#0b1730;color:#d7e1f3;font-size:13px}
    .topbar .container{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar-links{display:flex;gap:22px}
    .topbar a{color:#d7e1f3}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--边框)}
    .header-inner{height:76px;display:flex;align-items:center;gap:34px}
    .logo{display:flex;align-items:center;gap:10px;min-width:190px;font-size:19px;font-weight:800;color:var(--深色)}
    .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;height:76px}
    .nav-item{position:relative;display:flex;align-items:center}
    .nav-link{display:flex;align-items:center;height:76px;padding:0 14px;font-size:15px;white-space:nowrap;color:#344054}
    .nav-link:hover,.nav-link:focus{color:var(--主题色)}
    .has-arrow:after{content:"";width:6px;height:6px;margin-left:8px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg) translateY(-2px)}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translateX(-50%) translateY(8px);width:290px;padding:22px;background:#fff;border:1px solid var(--边框);border-radius:0 0 14px 14px;box-shadow:var(--阴影);opacity:0;visibility:hidden;transition:.2s ease}
    .mega-menu{width:650px}
    .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;top:-12px;left:0;right:0;height:12px}
    .mega-title{margin:0 0 14px;color:var(--深色);font-size:15px;font-weight:800}
    .dropdown-panel>a:not(.mega-footer){display:block;padding:8px 0;border-bottom:1px solid #eef1f5;font-size:14px}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
    .mega-card{min-width:0;padding:12px;border:1px solid #edf0f5;border-radius:10px;background:#fbfcfe}
    .mega-card img{width:32px;height:32px;object-fit:contain;margin-bottom:8px}
    .mega-card strong,.mega-card small{display:block;overflow:hidden;text-overflow:ellipsis}
    .mega-card strong{font-size:13px;color:var(--深色);white-space:nowrap}
    .mega-card small{font-size:11px;line-height:1.6;color:var(--次文字);margin-top:3px}
    .mega-footer{display:block;margin-top:16px;padding-top:13px;border-top:1px solid var(--边框);font-size:13px;font-weight:700;color:var(--主题色)}
    .header-btns{display:flex;align-items:center;gap:12px;white-space:nowrap}
    .member-btn{font-size:14px;color:var(--主题色);font-weight:700}
    .open-account{padding:9px 17px;border-radius:8px;background:var(--主题色);color:#fff;font-size:14px;font-weight:700}
    .hamburger{display:none;width:40px;height:40px;padding:8px;border:1px solid var(--边框);border-radius:8px;background:#fff;cursor:pointer}
    .hamburger span{display:block;height:2px;margin:5px 0;background:var(--深色);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(3,12,30,.5);opacity:0;visibility:hidden;z-index:40;transition:.2s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:0;width:min(390px,88vw);height:100vh;overflow:auto;background:#fff;z-index:41;transform:translateX(100%);transition:.25s ease;box-shadow:-12px 0 35px rgba(0,0,0,.16)}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:16px;padding:20px;border-bottom:1px solid var(--边框);font-weight:700}
    .drawer-head>a{margin-left:auto;color:var(--主题色)}
    .drawer-close{font-size:26px;border:0;background:none;cursor:pointer;color:#475467}
    .drawer-menu{padding:12px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;border:0;border-bottom:1px solid #eef1f5;background:none;text-align:left;color:var(--文字);font-size:15px;cursor:pointer}
    .drawer-toggle:after{content:"＋";float:right;color:var(--次文字)}
    .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:8px 0;color:var(--次文字);font-size:14px}

    .productlist-main{padding:58px 0 84px}
    .productlist-main .page-heading{text-align:center;max-width:760px;margin:0 auto 34px}
    .productlist-main .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--主题色);font-size:13px;font-weight:800;letter-spacing:.12em}
    .productlist-main .eyebrow:before{content:"";display:inline-block;width:24px;height:2px;background:var(--主题色)}
    .productlist-main h1{margin:10px 0 8px;color:var(--深色);font-size:clamp(30px,4vw,48px);line-height:1.2}
    .productlist-main .intro{margin:0;color:var(--次文字);font-size:16px}
    .category-strip{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:0 auto 38px}
    .category-strip a{padding:9px 17px;border:1px solid #d9e0eb;border-radius:999px;background:#fff;color:#475467;font-size:14px;transition:.2s}
    .category-strip a:hover,.category-strip a.active{border-color:var(--主题色);background:var(--主题色);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:#fff;border:1px solid var(--边框);border-radius:16px;overflow:hidden;box-shadow:0 6px 18px rgba(16,24,40,.04);transition:.25s}
    .product-card:hover{transform:translateY(-5px);box-shadow:var(--阴影)}
    .product-cover{height:190px;padding:20px;background:linear-gradient(135deg,#edf4ff,#f8fbff);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:22px}
    .product-category{color:var(--主题色);font-size:12px;font-weight:800;letter-spacing:.06em}
    .product-body h2{margin:7px 0 9px;font-size:20px;line-height:1.35;color:var(--深色)}
    .product-summary{display:-webkit-box;overflow:hidden;margin:0;color:var(--次文字);font-size:14px;line-height:1.8;-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:#98a2b3;font-size:12px}
    .product-more{display:inline-flex;align-items:center;gap:7px;margin-top:17px;color:var(--主题色);font-size:14px;font-weight:800}
    .product-more:after{content:"→";font-size:18px}
    .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 #d9e0eb;border-radius:7px;background:#fff;text-align:center;font-size:14px}
    .pagination a.current,.pagination a.active{background:var(--主题色);border-color:var(--主题色);color:#fff}
    .footer{background:#0b1730;color:#c8d3e4;padding:54px 0 22px}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px}
    .footer-brand strong{display:block;margin-bottom:12px;color:#fff;font-size:20px}
    .footer p{margin:7px 0;color:#9eacc0;font-size:13px}
    .footer h3{margin:0 0 13px;color:#fff;font-size:15px}
    .footer-grid>div>a{display:block;margin:7px 0;color:#aebbd0;font-size:13px}
    .footer-grid>div>a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:36px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);color:#8493aa;font-size:12px}

    @media(max-width:1050px){
      .header-inner{gap:14px}
      .logo{min-width:155px}
      .nav-link{padding:0 8px}
      .mega-menu{width:580px}
    }
    @media(max-width:800px){
      .container{width:min(100% - 28px,620px)}
      .topbar .container{padding:8px 0;align-items:flex-start}
      .topbar-links{flex-direction:column;gap:0;text-align:right}
      .header-inner{height:66px}
      .main-nav{display:none}
      .header-btns{margin-left:auto}
      .hamburger{display:block}
      .member-btn{display:none}
      .productlist-main{padding:38px 0 58px}
      .product-grid{grid-template-columns:repeat(2,1fr);gap:16px}
      .product-cover{height:150px;padding:15px}
      .product-body{padding:16px}
      .product-body h2{font-size:17px}
      .footer-grid{grid-template-columns:repeat(2,1fr);gap:26px}
      .footer-bottom{flex-direction:column;gap:5px}
    }
    @media(max-width:520px){
      .topbar{font-size:11px}
      .topbar .container{gap:8px}
      .open-account{padding:7px 11px;font-size:12px}
      .product-grid{grid-template-columns:1fr}
      .product-cover{height:180px}
      .category-strip{justify-content:flex-start}
      .footer-grid{grid-template-columns:1fr}
    }