:root{
      --theme:#0B3D91;
      --ink:#18212f;
      --muted:#697386;
      --line:#e3e8ef;
      --paper:#f7f9fc;
      --white:#fff;
      --shadow:0 14px 36px rgba(20,42,78,.09);
      --radius:16px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:var(--paper);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}
    .container{width:min(1180px,calc(100% - 36px));margin:0 auto}

    .topbar{height:38px;background:#10223d;color:#dce7f6;font-size:13px}
    .topbar .container{height:100%;display:flex;align-items:center;justify-content:space-between}
    .topbar a{color:#fff}
    .header{position:relative;z-index:30;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{height:78px;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:10px;min-width:180px;font-weight:800;color:var(--theme);font-size:19px}
    .logo img{width:34px;height:34px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:center;justify-content:center;gap:4px;list-style:none;margin:0;padding:0}
    .nav-list>li{position:relative}
    .nav-link{display:block;padding:25px 14px;color:#26354b;font-size:15px;white-space:nowrap}
    .nav-link:hover,.nav-link:focus{color:var(--theme)}
    .has-arrow:after{content:"⌄";font-size:12px;margin-left:6px;color:#8390a3}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%) translateY(8px);width:310px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:.2s;z-index:40}
    .mega-menu{width:650px}
    .nav-list>li:hover .dropdown-panel,.nav-list>li:focus-within .dropdown-panel,
    .nav-list>li:hover .mega-menu,.nav-list>li:focus-within .mega-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
    .drop-title,.mega-title{margin:0 0 12px;color:var(--theme);font-size:14px;font-weight:800}
    .drop-item{display:block;padding:8px 0;border-bottom:1px solid #edf0f5;font-size:14px}
    .drop-item:hover{color:var(--theme)}
    .mega-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
    .mega-card{display:flex;gap:9px;min-width:0;padding:9px;border:1px solid #edf0f5;border-radius:10px;background:#fbfcfe;font-size:12px}
    .mega-card img{width:38px;height:38px;object-fit:cover;border-radius:8px;flex:0 0 38px}
    .mega-card>span{min-width:0}
    .mega-card strong,.mega-card span span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
    .mega-card strong{font-size:13px;color:#172b48}
    .mega-card span span{color:var(--muted);font-size:11px}
    .mega-footer{display:block;margin-top:15px;color:var(--theme);font-size:13px;font-weight:700}
    .header-btns{display:flex;align-items:center;gap:8px;white-space:nowrap}
    .member-btn,.open-btn{padding:8px 13px;border-radius:8px;font-size:13px}
    .member-btn{color:var(--theme);border:1px solid #b8c9e5}
    .open-btn{color:#fff;background:var(--theme)}
    .hamburger{display:none;border:0;background:transparent;padding:8px;cursor:pointer}
    .hamburger span{display:block;width:23px;height:2px;background:var(--ink);margin:4px 0;transition:.2s}
    .hamburger.active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
    .hamburger.active span:nth-child(2){opacity:0}
    .hamburger.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

    .drawer-overlay{position:fixed;inset:0;background:rgba(7,18,36,.48);opacity:0;visibility:hidden;transition:.25s;z-index:80}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;right:0;top:0;width:min(360px,88vw);height:100vh;background:#fff;transform:translateX(100%);transition:.28s;z-index:90;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{height:68px;display:flex;align-items:center;gap:16px;padding:0 20px;border-bottom:1px solid var(--line);font-weight:700}
    .drawer-head span{flex:1;color:var(--theme)}
    .drawer-head a{padding:5px 10px;color:#fff;background:var(--theme);border-radius:6px;font-size:13px}
    .drawer-close{border:0;background:transparent;font-size:28px;line-height:1;cursor:pointer;color:#566274}
    .drawer-menu{padding:12px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid #edf0f5;background:none;text-align:left;font:inherit;color:var(--ink);cursor:pointer}
    .drawer-toggle:after{content:"＋";float:right;color:#8290a3}
    .drawer-toggle.active:after{content:"－"}
    .drawer-submenu{display:none;padding:5px 0 8px 15px;background:#f7f9fc}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:7px 0;color:var(--muted);font-size:14px}

    .category-page{padding:52px 0 80px}
    .category-intro{text-align:center;max-width:760px;margin:0 auto 36px}
    .category-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.12em}
    .category-kicker:before{content:"";width:26px;height:2px;background:var(--theme)}
    .category-intro h1{margin:12px 0 10px;font-size:clamp(30px,5vw,48px);line-height:1.25;color:#142b4c}
    .category-intro p{margin:0;color:var(--muted);font-size:16px}
    .article-list{display:grid;gap:20px}
    .article-card{display:grid;grid-template-columns:300px minmax(0,1fr);gap:25px;padding:18px;background:var(--white);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 24px rgba(20,42,78,.04);transition:.2s}
    .article-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
    .article-cover{min-height:210px;overflow:hidden;border-radius:12px;background:#e8edf5}
    .article-cover img{width:100%;height:100%;min-height:210px;object-fit:cover}
    .article-body{min-width:0;padding:4px 5px 3px 0}
    .article-label{display:inline-block;padding:4px 9px;border-radius:20px;background:#eaf1fc;color:var(--theme);font-size:12px;font-weight:700}
    .article-body h2{margin:11px 0 8px;font-size:22px;line-height:1.4;color:#172c4d}
    .article-body h2 a:hover{color:var(--theme)}
    .article-summary{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:3;overflow:hidden;margin:0 0 15px;color:#667386;font-size:14px}
    .article-meta{display:flex;flex-wrap:wrap;gap:9px 16px;color:#8290a1;font-size:12px;border-top:1px solid #edf0f5;padding-top:12px}
    .article-meta strong{color:#53647b;font-weight:600}
    .article-tags{margin:12px 0 17px;color:#718096;font-size:12px}
    .article-cta{display:inline-flex;align-items:center;gap:7px;color:var(--theme);font-weight:800;font-size:13px}
    .article-cta:after{content:"→";font-size:17px}
    .pagination{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin-top:38px}
    .pagination a{min-width:36px;padding:6px 11px;text-align:center;border:1px solid var(--line);border-radius:7px;background:#fff;color:#526278;font-size:13px}
    .pagination a:hover,.pagination a.current,.pagination a.active{color:#fff;background:var(--theme);border-color:var(--theme)}
    .footer{background:#10223d;color:#c4d0df;padding:52px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:35px}
    .footer-brand{color:#fff;font-size:20px;font-weight:800;margin-bottom:10px}
    .footer p{margin:6px 0;font-size:13px;line-height:1.8}
    .footer h3{margin:0 0 12px;color:#fff;font-size:15px}
    .footer-grid>div>a{display:block;margin:5px 0;color:#c4d0df;font-size:13px}
    .footer-grid>div>a:hover{color:#fff}
    .footer-social{margin-top:15px;color:#fff}
    .footer-bottom{margin-top:35px;padding-top:18px;border-top:1px solid rgba(255,255,255,.14);color:#9eafc4;font-size:12px;text-align:center}

    @media(max-width:960px){
      .main-nav{display:none}
      .header-inner{height:68px}
      .header-btns{margin-left:auto}
      .hamburger{display:block}
      .member-btn{display:none}
      .mega-menu{width:min(650px,calc(100vw - 40px))}
    }
    @media(max-width:700px){
      .container{width:min(100% - 28px,1180px)}
      .topbar{height:auto;padding:7px 0}
      .topbar .container{display:block;text-align:center;font-size:11px}
      .topbar .contact{display:block;margin-top:2px}
      .logo{min-width:auto;font-size:16px}
      .logo img{width:29px;height:29px}
      .open-btn{padding:7px 10px;font-size:12px}
      .category-page{padding:35px 0 55px}
      .category-intro{margin-bottom:25px}
      .category-intro h1{font-size:31px}
      .category-intro p{font-size:14px}
      .article-card{grid-template-columns:1fr;gap:15px;padding:13px}
      .article-cover,.article-cover img{min-height:190px;height:190px}
      .article-body{padding:0 3px 5px}
      .article-body h2{font-size:19px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:25px 18px}
    }
    @media(max-width:430px){
      .footer-grid{grid-template-columns:1fr}
      .article-meta{gap:6px 10px}
    }