:root{--primary:#0B3D91;--deep:#101d45;--ink:#17233f;--muted:#64748b;--line:#dbe5f1;--soft:#f4f8fc;--white:#fff;--shadow:0 16px 42px rgba(15,43,87,.10)}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#f7faff;font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;line-height:1.7}
    body.drawer-locked{overflow:hidden}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(1180px,calc(100% - 40px));margin:auto}
    .topbar{background:var(--deep);color:#dce8ff;font-size:13px}
    .topbar-inner{min-height:38px;display:flex;align-items:center;justify-content:space-between}
    .topbar-contact{display:flex;gap:22px}
    .topbar a:hover{color:#fff}
    .header{position:relative;background:#fff;border-bottom:1px solid #e6edf6;z-index:20}
    .header-inner{min-height:78px;display:flex;align-items:center;gap:28px}
    .logo{display:inline-flex;align-items:center;gap:10px;font-size:19px;font-weight:800;color:var(--deep);white-space:nowrap}
    .logo img{width:36px;height:36px;object-fit:contain}
    .main-nav{margin-left:auto}
    .nav-list{display:flex;align-items:center;gap:4px;margin:0;padding:0;list-style:none}
    .nav-item{position:relative}
    .nav-link{display:block;padding:27px 13px;font-weight:600;font-size:14px;white-space:nowrap}
    .nav-link:hover,.nav-link:focus{color:var(--primary)}
    .has-arrow:after{content:"";display:inline-block;width:6px;height:6px;margin:0 0 3px 7px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg)}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);opacity:0;visibility:hidden;pointer-events:none;background:#fff;border:1px solid #e3ebf5;border-radius:0 0 14px 14px;box-shadow:var(--shadow);transition:.2s;z-index:30}
    .dropdown-panel{width:310px;padding:20px}
    .mega-menu{width:min(850px,calc(100vw - 40px));padding:22px}
    .mega-tools{width:720px}.mega-products{width:min(900px,calc(100vw - 40px))}
    .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;pointer-events:auto;transform:translateX(-50%) translateY(0)}
    .nav-item:after{content:"";position:absolute;left:0;right:0;height:12px;top:100%}
    .dropdown-title,.mega-title-row{margin:0 0 14px;color:var(--deep);font-weight:800}
    .dropdown-panel article{padding:9px 0;border-bottom:1px solid var(--line);font-size:14px}
    .dropdown-panel article a:hover{color:var(--primary)}
    .dropdown-more,.mega-footer{display:block;margin-top:15px;color:var(--primary);font-weight:700;font-size:13px}
    .mega-title-row{display:flex;justify-content:space-between;gap:18px;align-items:center}
    .mega-title-row span{font-size:12px;color:var(--muted);font-weight:400}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .mega-card{min-width:0;padding:13px;border:1px solid var(--line);border-radius:10px;background:#fbfdff;transition:.2s}
    .mega-card:hover{border-color:#99b7e4;transform:translateY(-2px)}
    .mega-card img{width:34px;height:34px;object-fit:contain;margin-bottom:8px;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;color:var(--muted);font-size:12px;line-height:1.5}
    .mega-meta{display:flex;flex-wrap:wrap;gap:7px;color:var(--muted);font-size:11px;margin-top:7px}
    .mega-categories{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 15px}
    .mega-categories a{padding:5px 11px;border-radius:30px;background:#edf4fc;color:var(--primary);font-size:12px}
    .header-btns{display:flex;align-items:center;gap:10px}
    .header-account{font-size:13px;color:var(--primary);white-space:nowrap}
    .header-open{background:var(--primary);color:#fff;padding:8px 16px;border-radius:7px;font-size:13px;font-weight:700;white-space:nowrap}
    .hamburger{display:none;width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:7px;padding:9px;cursor:pointer}
    .hamburger span{display:block;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(8,22,49,.52);opacity:0;visibility:hidden;transition:.25s;z-index:50}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:0;width:min(390px,88vw);height:100vh;background:#fff;transform:translateX(100%);transition:.3s;z-index:51;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:16px;padding:20px;border-bottom:1px solid var(--line);font-weight:700}
    .drawer-head>a{margin-left:auto;color:var(--primary)}
    .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:14px 0;border:0;border-bottom:1px solid #edf2f8;background:none;text-align:left;font:inherit;color:var(--ink);cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--primary);font-size:20px}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:none;padding:5px 0 8px 15px;border-bottom:1px solid #edf2f8}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:14px}
    .footer{margin-top:70px;background:var(--deep);color:#d8e4fa}
    .footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:42px;padding:50px 0 38px}
    .footer .logo{color:#fff;margin-bottom:15px}
    .footer-brand p{margin:0;color:#aebed8;font-size:13px;max-width:330px}
    .footer h3{margin:0 0 15px;color:#fff;font-size:15px}
    .footer-links{display:grid;gap:8px;font-size:13px;color:#b8c8e1}
    .footer-links a:hover,.footer-contact a:hover{color:#fff}
    .footer-contact{display:grid;gap:9px;font-size:13px;color:#b8c8e1}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:18px 0;display:flex;justify-content:space-between;gap:20px;color:#94a9ca;font-size:12px}
    .productlist-main{padding:68px 0 10px}
    .page-heading{text-align:center;max-width:760px;margin:0 auto 35px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-size:13px;font-weight:800;letter-spacing:.08em}
    .eyebrow:before{content:"";width:22px;height:2px;background:var(--primary)}
    .page-heading h1{margin:10px 0 12px;font-size:clamp(30px,4vw,48px);line-height:1.2;color:var(--deep)}
    .page-heading p{margin:0;color:var(--muted);font-size:15px}
    .category-strip{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;margin:0 auto 32px}
    .category-strip a{padding:9px 18px;background:#fff;border:1px solid var(--line);border-radius:30px;color:var(--primary);font-size:13px;transition:.2s}
    .category-strip a:hover,.category-strip a.active{background:var(--primary);border-color:var(--primary);color:#fff}
    .product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .product-card{background:#fff;border:1px solid #e1eaf4;border-radius:16px;overflow:hidden;box-shadow:0 8px 25px rgba(20,60,110,.05);transition:.25s;display:flex;flex-direction:column}
    .product-card:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:#b9cde8}
    .product-cover{height:205px;background:#edf4fc;display:flex;align-items:center;justify-content:center;overflow:hidden}
    .product-cover img{width:100%;height:100%;object-fit:cover}
    .product-body{padding:20px;display:flex;flex-direction:column;flex:1}
    .product-label{display:inline-block;width:max-content;max-width:100%;padding:4px 9px;border-radius:5px;background:#eaf2fc;color:var(--primary);font-size:11px;margin-bottom:10px}
    .product-body h2{margin:0 0 9px;font-size:19px;line-height:1.35;color:var(--deep)}
    .product-summary{margin:0;color:var(--muted);font-size:13px;line-height:1.75;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
    .product-meta{display:flex;justify-content:space-between;gap:10px;margin-top:auto;padding-top:18px;color:#8291a8;font-size:12px;border-top:1px solid #edf2f7}
    .product-cta{display:inline-flex;align-items:center;gap:5px;margin-top:15px;color:var(--primary);font-size:13px;font-weight:800}
    .product-cta:after{content:"→";font-size:16px}
    .pagination{display:flex;justify-content:center;gap:8px;margin:42px 0 10px;flex-wrap:wrap}
    .pagination a{min-width:38px;height:38px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line);background:#fff;border-radius:7px;color:var(--primary);font-size:13px}
    .pagination a:hover,.pagination a.active{background:var(--primary);color:#fff;border-color:var(--primary)}
    @media(max-width:1100px){
      .main-nav{display:none}.hamburger{display:block}.header-btns{margin-left:auto}
      .footer-main{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:700px){
      .container{width:min(100% - 28px,1180px)}
      .topbar-inner{padding:8px 0;align-items:flex-start;gap:8px}.topbar-contact{gap:8px;flex-direction:column;text-align:right}
      .header-inner{min-height:68px;gap:10px}.header-account{display:none}.header-open{padding:7px 12px}
      .productlist-main{padding:45px 0 5px}.page-heading h1{font-size:32px}
      .product-grid{grid-template-columns:1fr}.product-cover{height:190px}
      .footer-main{grid-template-columns:1fr;gap:28px;padding:38px 0 28px}.footer-bottom{flex-direction:column;gap:5px}
      .mega-grid{grid-template-columns:1fr 1fr}
    }