:root{--primary:#0B3D91;--deep:#071b46;--ink:#13213f;--muted:#6b7892;--line:#dce5f2;--pale:#f3f7fc;--white:#fff}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#f7faff;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.65}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .topbar{background:var(--deep);color:#dbe8ff;font-size:13px}
    .topbar-inner{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar-right{display:flex;gap:22px}
    .topbar a:hover{color:#fff}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid #e8eef7}
    .header-inner{height:78px;display:flex;align-items:center;gap:34px}
    .logo{display:flex;align-items:center;gap:10px;white-space:nowrap;color:var(--deep);font-size:20px;font-weight:800}
    .logo img{width:36px;height:36px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:center;justify-content:center;gap:4px;padding:0;margin:0;list-style:none}
    .nav-item{position:relative}
    .nav-link{display:block;padding:27px 14px;font-size:14px;font-weight:700;color:#263758;white-space:nowrap}
    .nav-link:hover{color:var(--primary)}
    .has-arrow:after{content:"";display:inline-block;width:6px;height:6px;margin:0 0 3px 8px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg)}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% - 1px);left:50%;transform:translateX(-50%);opacity:0;visibility:hidden;pointer-events:none;background:#fff;border:1px solid #e5ecf6;border-radius:0 0 14px 14px;box-shadow:0 18px 45px #132b571c;transition:.2s;z-index:30}
    .dropdown-panel{width:250px;padding:12px}
    .dropdown-panel a{display:block;padding:10px 12px;border-radius:8px;font-size:13px}
    .dropdown-panel a:hover{background:var(--pale);color:var(--primary)}
    .mega-menu{width:700px;padding:20px}
    .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}
    .mega-heading{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--line);font-size:14px}
    .mega-heading a,.mega-footer{color:var(--primary);font-size:12px}
    .mega-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px;padding:14px 0}
    .mega-card{display:flex;gap:10px;padding:10px;border-radius:10px;background:#f8fbff}
    .mega-card:hover{background:#edf4ff}
    .mega-card img{width:42px;height:42px;object-fit:cover;border-radius:8px;background:#e5edf8}
    .mega-card span{min-width:0}
    .mega-card b,.mega-card small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
    .mega-card b{font-size:13px}.mega-card small{font-size:11px;color:var(--muted)}
    .mega-footer{display:block;border-top:1px solid var(--line);padding-top:13px}
    .header-btns{display:flex;align-items:center;gap:12px;white-space:nowrap}
    .member-link{font-size:13px;color:var(--primary);font-weight:700}
    .open-account{padding:9px 16px;color:#fff;background:var(--primary);border-radius:7px;font-size:13px;font-weight:700}
    .hamburger{display:none;border:0;background:none;padding:7px;cursor:pointer}
    .hamburger span{display:block;width:23px;height:2px;margin:5px 0;background:var(--deep);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:#06143299;opacity:0;visibility:hidden;z-index:40;transition:.2s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:-390px;width:min(370px,88vw);height:100vh;overflow:auto;background:#fff;z-index:41;transition:.3s;padding-bottom:30px}
    .mobile-drawer.open{right:0}
    .drawer-head{display:flex;align-items:center;justify-content:space-between;padding:20px;border-bottom:1px solid var(--line);font-weight:700;color:var(--primary)}
    .drawer-head a{font-size:13px;margin-left:auto;margin-right:15px}
    .drawer-close{border:0;background:none;font-size:28px;color:var(--muted);cursor:pointer}
    .drawer-menu{padding:10px 20px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 4px;border:0;border-bottom:1px solid #edf1f7;background:none;text-align:left;font-size:15px;color:var(--ink)}
    .drawer-toggle{cursor:pointer;font-weight:600}
    .drawer-toggle:after{content:"+";float:right;color:var(--primary);font-size:20px}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:none;padding:5px 10px 8px;background:#f6f9fe}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 4px;font-size:13px;color:var(--muted)}
    .footer{margin-top:70px;padding:48px 0 0;background:var(--deep);color:#c7d5ed}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.1fr;gap:42px}
    .footer-brand{font-size:21px;font-weight:800;color:#fff;margin-bottom:13px}
    .footer p{margin:7px 0;font-size:13px}
    .footer h3{margin:0 0 14px;color:#fff;font-size:15px}
    .footer-grid>div>a{display:block;font-size:13px;margin:7px 0;color:#c7d5ed}
    .footer-grid>div>a:hover{color:#fff}
    .footer-bottom{margin-top:36px;border-top:1px solid #ffffff1c;padding:18px 0;text-align:center;font-size:12px;color:#94a8c7}
    .category-page{padding:58px 0 10px}
    .category-intro{text-align:center;max-width:760px;margin:0 auto 38px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--primary);font-size:13px;font-weight:800;letter-spacing:2px}
    .eyebrow:before{content:"";width:24px;height:2px;background:var(--primary)}
    .category-intro h1{margin:12px 0 10px;font-size:clamp(30px,4vw,46px);line-height:1.2;color:var(--deep)}
    .category-intro p{margin:0;color:var(--muted);font-size:15px}
    .category-toolbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;padding:14px 18px;background:#fff;border:1px solid var(--line);border-radius:12px}
    .category-toolbar strong{font-size:15px}.category-toolbar span{font-size:13px;color:var(--muted)}
    .article-list{display:grid;gap:18px}
    .article-card{display:grid;grid-template-columns:300px 1fr;gap:24px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 8px 25px #17427d09}
    .article-cover{height:190px;overflow:hidden;border-radius:11px;background:#e8f0fb}
    .article-cover img{width:100%;height:100%;object-fit:cover;transition:.3s}
    .article-card:hover .article-cover img{transform:scale(1.04)}
    .article-body{min-width:0;display:flex;flex-direction:column}
    .article-label{font-size:12px;color:var(--primary);font-weight:800}
    .article-title{margin:7px 0 8px;font-size:21px;line-height:1.35;color:var(--deep)}
    .article-title a:hover{color:var(--primary)}
    .article-summary{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden;margin:0;color:#61708b;font-size:14px}
    .article-meta{display:flex;flex-wrap:wrap;gap:14px;margin-top:auto;padding-top:15px;color:#8793a8;font-size:12px}
    .article-tags{color:var(--primary)}
    .read-more{align-self:flex-start;margin-top:13px;color:var(--primary);font-size:13px;font-weight:800}
    .pagination{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin:34px 0 10px}
    .pagination a{min-width:34px;padding:6px 11px;text-align:center;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--muted);font-size:13px}
    .pagination a:hover,.pagination a.active{background:var(--primary);border-color:var(--primary);color:#fff}
    @media(max-width:1000px){
      .main-nav{display:none}.hamburger{display:block}.header-inner{justify-content:space-between}.header-btns{margin-left:auto}
      .mega-menu{display:none}
    }
    @media(max-width:680px){
      .container{width:min(100% - 28px,1180px)}.topbar-inner{padding:8px 0;align-items:flex-start}.topbar-right{gap:8px;flex-direction:column;text-align:right}.topbar{font-size:11px}
      .header-inner{height:68px}.logo{font-size:17px}.member-link{display:none}.open-account{padding:8px 11px}
      .category-page{padding-top:38px}.category-intro{margin-bottom:26px}.category-toolbar{align-items:flex-start;gap:4px;flex-direction:column}
      .article-card{grid-template-columns:1fr;gap:15px;padding:13px}.article-cover{height:190px}.article-title{font-size:19px}.article-summary{-webkit-line-clamp:4}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px 20px}.footer-grid>div:first-child{grid-column:1/-1}
    }