:root{--theme:#0B3D91;--ink:#172033;--muted:#687386;--line:#e5e9f0;--bg:#f5f7fb;--white:#fff;--shadow:0 16px 40px rgba(21,39,76,.08)}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:var(--bg);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:auto}
    .topbar{background:#091a38;color:#cbd5e7;font-size:13px}
    .topbar-inner{display:flex;justify-content:space-between;align-items:center;min-height:38px}
    .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{display:flex;align-items:center;min-height:78px;gap:28px}
    .logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;color:var(--theme);white-space:nowrap}
    .logo img{width:34px;height:34px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;justify-content:center;align-items:stretch;gap:4px;padding:0;margin:0;list-style:none}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:6px;padding:25px 13px;font-size:14px;white-space:nowrap}
    .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-top:-4px}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translateX(-50%);width:290px;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:var(--shadow);padding:18px;opacity:0;visibility:hidden;transition:.2s;z-index:30}
    .mega-menu{width:760px;padding:22px}
    .nav-item:after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:8px}
    .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}
    .dropdown-panel a{display:block;padding:9px 4px;border-bottom:1px solid var(--line);font-size:14px}
    .dropdown-panel a:hover,.category-links a:hover{color:var(--theme)}
    .dropdown-footer,.mega-footer{display:block;color:var(--theme);font-weight:700;margin-top:13px;font-size:13px}
    .mega-title-row{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:16px}
    .mega-title-row strong{font-size:17px}
    .mega-title-row span{font-size:12px;color:var(--muted)}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .mega-card{display:block;padding:13px;border:1px solid var(--line);border-radius:10px;background:#fff;transition:.2s}
    .mega-card:hover{border-color:#9bb1d6;transform:translateY(-2px)}
    .mega-card-head{display:flex;align-items:center;gap:9px}
    .mega-card-head img{width:30px;height:30px;object-fit:contain}
    .mega-card strong{font-size:13px;display:block}
    .mega-card p{font-size:12px;color:var(--muted);margin:7px 0 0;line-height:1.5}
    .mega-meta{display:flex;justify-content:space-between;gap:6px;color:var(--muted);font-size:11px;margin-top:10px}
    .rating{display:block;color:#bd7b16;font-size:11px;font-weight:400}
    .category-links{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:15px}
    .category-links a{padding:4px 10px;border-radius:20px;background:#f0f4fa;color:#4c5c75;font-size:12px}
    .video-card>img,.product-card>img{width:100%;height:70px;object-fit:cover;border-radius:7px;margin-bottom:8px}
    .header-btns{display:flex;align-items:center;gap:12px;white-space:nowrap}
    .member-entry{font-size:13px;color:var(--theme)}
    .account-entry{padding:8px 15px;background:var(--theme);color:#fff;border-radius:7px;font-size:13px}
    .hamburger{display:none;border:0;background:none;width:34px;padding:5px;cursor:pointer}
    .hamburger span{display:block;height:2px;background:var(--ink);margin:5px 0;transition:.2s}
    .drawer-overlay{display:none;position:fixed;inset:0;background:rgba(4,14,31,.5);z-index:50}
    .drawer-overlay.open{display:block}
    .mobile-drawer{position:fixed;right:-380px;top:0;width:min(360px,88vw);height:100vh;background:#fff;z-index:60;overflow:auto;transition:right .25s;box-shadow:-12px 0 30px rgba(0,0,0,.12)}
    .mobile-drawer.open{right:0}
    .drawer-head{display:flex;align-items:center;justify-content:space-between;padding:18px;border-bottom:1px solid var(--line);font-weight:700;color:var(--theme)}
    .drawer-head a{background:var(--theme);color:#fff;padding:5px 12px;border-radius:5px;font-size:13px}
    .drawer-close{border:0;background:none;font-size:28px;line-height:1;cursor:pointer}
    .drawer-menu{padding:10px 18px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 4px;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;color:var(--ink);cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--muted)}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:none;padding:4px 12px;background:#f7f9fc}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:13px}
    .footer{background:#091a38;color:#c5d0e2;margin-top:70px;padding:55px 0 20px}
    .footer .logo{color:#fff}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px}
    .footer-brand p{color:#9eacc1;font-size:13px;max-width:310px}
    .footer h3{color:#fff;font-size:15px;margin:3px 0 14px}
    .footer-links{display:grid;gap:7px;font-size:13px;color:#aebbd0}
    .footer-links a:hover,.footer-contact a:hover{color:#fff}
    .footer-contact{display:grid;gap:8px;font-size:13px;color:#aebbd0}
    .social-entry{color:#fff!important;margin-top:8px}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.12);margin-top:38px;padding-top:18px;color:#8f9db3;font-size:12px}
    .risk-note{text-align:right}
    .productlist-main{padding:58px 0 10px}
    .page-heading{text-align:center;max-width:720px;margin:0 auto 38px}
    .page-heading .eyebrow{display:inline-block;color:var(--theme);font-size:13px;font-weight:700;letter-spacing:2px;margin-bottom:8px}
    .page-heading h1{font-size:clamp(28px,4vw,44px);line-height:1.25;margin:0 0 13px;color:#101c31}
    .page-heading p{color:var(--muted);margin:0;font-size:15px}
    .product-categories{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin-bottom:34px}
    .product-categories a{padding:8px 18px;background:#fff;border:1px solid var(--line);border-radius:24px;color:#4f5d73;font-size:13px}
    .product-categories a:hover,.product-categories a.active{background:var(--theme);border-color:var(--theme);color:#fff}
    .product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
    .product-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;box-shadow:0 8px 25px rgba(25,45,82,.04);display:flex;flex-direction:column;transition:.2s}
    .product-item:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
    .product-cover{height:190px;background:#e9eef7;overflow:hidden}
    .product-cover img{width:100%;height:100%;object-fit:cover}
    .product-body{padding:20px;display:flex;flex-direction:column;flex:1}
    .product-body h2{font-size:19px;line-height:1.4;margin:0 0 9px;color:#14213a}
    .product-summary{font-size:14px;color:var(--muted);margin:0;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:#8a95a7;font-size:12px}
    .product-action{display:inline-block;margin-top:15px;color:var(--theme);font-size:13px;font-weight:700}
    .pagination{display:flex;justify-content:center;gap:7px;margin:42px 0 10px;flex-wrap:wrap}
    .pagination a{min-width:34px;height:34px;padding:5px 10px;text-align:center;border:1px solid var(--line);background:#fff;border-radius:6px;color:#53617a;font-size:13px}
    .pagination a.active,.pagination a:hover{background:var(--theme);color:#fff;border-color:var(--theme)}
    @media(max-width:1050px){.nav-link{padding-left:8px;padding-right:8px}.mega-menu{width:680px}.footer-grid{grid-template-columns:repeat(2,1fr)}}
    @media(max-width:800px){.main-nav{display:none}.hamburger{display:block}.header-btns{margin-left:auto}.member-entry{display:none}.mega-grid{grid-template-columns:repeat(2,1fr)}.product-grid{grid-template-columns:repeat(2,1fr)}.footer-bottom{display:block}.risk-note{text-align:left;margin-top:8px}}
    @media(max-width:560px){.container{width:min(100% - 28px,1180px)}.topbar-inner{display:block;padding:7px 0}.topbar-contact{gap:12px;flex-wrap:wrap}.header-inner{min-height:68px}.logo{font-size:16px}.account-entry{padding:6px 10px}.productlist-main{padding-top:38px}.product-grid{grid-template-columns:1fr}.product-cover{height:180px}.footer{padding-top:38px}.footer-grid{grid-template-columns:1fr;gap:25px}}