:root{
      --theme:#0B3D91;
      --ink:#172033;
      --muted:#667085;
      --line:#e5eaf2;
      --soft:#f5f7fb;
      --card:#fff;
      --radius:16px;
    }
    *{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}
    button{font:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}
    .topbar{background:#071d42;color:#dbe7f8;font-size:13px}
    .topbar .container{min-height:36px;display:flex;align-items:center;justify-content:space-between}
    .topbar a{margin-left:22px;color:#fff}
    .header{position:relative;z-index:30;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 2px 12px rgba(16,36,70,.05)}
    .header-inner{height:76px;display:flex;align-items:center;gap:30px}
    .logo{display:flex;align-items:center;gap:10px;min-width:180px;font-weight:800;color:var(--theme);font-size:19px}
    .logo img{width:38px;height:38px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:center;justify-content:center;gap:3px;list-style:none;margin:0;padding:0}
    .nav-item{position:relative}
    .nav-link{display:block;padding:25px 14px;color:#25324a;font-size:15px;white-space:nowrap}
    .nav-link:hover,.nav-link:focus{color:var(--theme)}
    .has-arrow:after{content:"⌄";font-size:13px;margin-left:6px;color:#8792a6}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);width:300px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:0 18px 40px rgba(14,34,69,.14);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}
    .mega-menu{width:720px}
    .nav-item:after{content:"";position:absolute;left:0;right:0;top:100%;height:12px}
    .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}
    .dropdown-panel>a{display:block;padding:9px 10px;border-bottom:1px solid #f0f2f6;font-size:14px}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .mega-card{display:block;padding:12px;border:1px solid var(--line);border-radius:11px;background:#fbfcfe;min-height:92px}
    .mega-card:hover{border-color:#a9bddf;background:#f3f7fd}
    .mega-card img{width:34px;height:34px;object-fit:contain;margin-bottom:6px}
    .mega-card strong{display:block;font-size:14px;line-height:1.45}
    .mega-card small{display:block;color:var(--muted);font-size:11px;line-height:1.5;margin-top:4px}
    .mega-footer{display:block;margin-top:14px;padding-top:12px;border-top:1px solid var(--line);color:var(--theme);font-weight:700;font-size:13px}
    .header-btns{display:flex;align-items:center;gap:15px;white-space:nowrap}
    .account-link{padding:8px 15px;border-radius:8px;background:var(--theme);color:#fff;font-size:13px}
    .hamburger{display:none;border:0;background:none;width:40px;height:40px;padding:8px;cursor:pointer}
    .hamburger span{display:block;height:2px;background:var(--ink);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{display:none;position:fixed;inset:0;background:rgba(4,17,38,.48);z-index:40}
    .drawer-overlay.open{display:block}
    .mobile-drawer{position:fixed;top:0;right:-360px;width:min(360px,88vw);height:100vh;z-index:50;background:#fff;box-shadow:-8px 0 30px rgba(0,0,0,.18);transition:right .25s;overflow:auto}
    .mobile-drawer.open{right:0}
    .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:#687386}
    .drawer-menu{padding:12px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;color:var(--ink);cursor:pointer}
    .drawer-group{border-bottom:1px solid var(--line)}
    .drawer-toggle:after{content:"＋";float:right;color:#8b97aa}
    .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:7px 0;color:var(--muted);font-size:14px}
    .category-page{padding:48px 0 72px}
    .category-heading{padding:32px 34px;border-radius:20px;background:linear-gradient(135deg,#0b3d91,#174f9f 60%,#d9e8ff);color:#fff;margin-bottom:30px}
    .category-heading .eyebrow{margin:0 0 7px;color:#d9e8ff;font-size:13px;letter-spacing:.12em}
    .category-heading h1{margin:0 0 8px;font-size:clamp(28px,4vw,44px);line-height:1.25}
    .category-heading p{margin:0;max-width:760px;color:#e8f0ff}
    .article-list{display:grid;gap:20px}
    .article-card{display:grid;grid-template-columns:300px minmax(0,1fr);gap:24px;padding:20px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 24px rgba(20,43,78,.05)}
    .article-cover{height:205px;border-radius:12px;overflow:hidden;background:#e7edf6}
    .article-cover img{width:100%;height:100%;object-fit:cover}
    .article-body{min-width:0}
    .article-kicker{display:inline-block;margin-bottom:7px;color:var(--theme);font-size:13px;font-weight:700}
    .article-body h2{margin:0 0 8px;font-size:22px;line-height:1.4}
    .article-body h2 a:hover{color:var(--theme)}
    .article-summary{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin:0 0 14px;color:#5b6679}
    .article-meta{display:flex;flex-wrap:wrap;gap:8px 18px;margin-bottom:14px;color:#7b8798;font-size:13px}
    .article-tags{display:flex;flex-wrap:wrap;gap:7px;margin-bottom:15px}
    .article-tags span{padding:3px 9px;border-radius:20px;background:#eef3fb;color:#41618e;font-size:12px}
    .read-more{display:inline-flex;align-items:center;padding:8px 15px;border-radius:8px;background:#eaf1fc;color:var(--theme);font-size:13px;font-weight:700}
    .read-more:hover{background:var(--theme);color:#fff}
    .pagination{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:34px}
    .pagination a{min-width:38px;padding:7px 12px;text-align:center;background:#fff;border:1px solid var(--line);border-radius:8px;color:#526078}
    .pagination a.active,.pagination a:hover{background:var(--theme);border-color:var(--theme);color:#fff}
    .footer{background:#0a1830;color:#d6deeb;padding:52px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
    .footer h3{margin:0 0 14px;color:#fff;font-size:16px}
    .footer p{margin:0 0 9px;color:#aebbd0;font-size:13px}
    .footer-grid a{display:block;margin:7px 0;color:#aebbd0;font-size:13px}
    .footer-grid a:hover{color:#fff}
    .footer-bottom{margin-top:34px;padding-top:18px;border-top:1px solid rgba(255,255,255,.13);color:#8e9db4;font-size:12px}
    @media(max-width:1050px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-btns{margin-left:auto}
      .mega-menu{width:min(720px,calc(100vw - 30px))}
    }
    @media(max-width:700px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{padding:7px 0;display:block}
      .topbar .contact{display:block}
      .topbar a{margin:0 14px 0 0}
      .header-inner{height:66px;gap:10px}
      .logo{min-width:0;font-size:16px}
      .logo img{width:32px;height:32px}
      .account-link{padding:7px 10px}
      .category-page{padding:26px 0 48px}
      .category-heading{padding:24px 22px;margin-bottom:20px}
      .article-card{grid-template-columns:1fr;gap:16px;padding:15px}
      .article-cover{height:190px}
      .article-body h2{font-size:19px}
      .footer{padding-top:36px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
    }
    @media(max-width:460px){
      .footer-grid{grid-template-columns:1fr}
      .article-meta{display:block}
      .article-meta span{display:inline-block;margin:0 12px 5px 0}
    }