:root{
      --theme:#0B3D91;
      --theme-deep:#06275d;
      --ice:#eaf4ff;
      --line:#dbe7f5;
      --ink:#14243d;
      --muted:#66758b;
      --white:#fff;
      --shadow:0 18px 50px rgba(11,61,145,.12);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:#f6f9fd;color:var(--ink);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:#061b3e;color:#dbeaff;font-size:13px}
    .topbar-inner{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar-contact{display:flex;gap:22px}
    .topbar a{color:#dbeaff;transition:.2s}
    .topbar a:hover{color:#fff}

    .header{position:relative;z-index:30;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);box-shadow:0 4px 20px rgba(12,45,90,.05)}
    .header-inner{height:78px;display:flex;align-items:center;gap:30px}
    .logo{display:flex;align-items:center;gap:10px;min-width:190px;color:var(--theme);font-size:20px;font-weight:800;white-space:nowrap}
    .logo img{width:36px;height:36px;object-fit:contain;border-radius:9px}
    .main-nav{flex:1}
    .nav-list{display:flex;justify-content:center;align-items:stretch;gap:4px;list-style:none;padding:0;margin:0}
    .nav-item{position:relative}
    .nav-link{height:78px;display:flex;align-items:center;padding:0 14px;font-size:15px;font-weight:600;color:#263750;white-space:nowrap}
    .nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--theme)}
    .has-arrow:after{content:"";width:6px;height:6px;margin:0 0 3px 8px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg)}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% - 1px);left:50%;transform:translateX(-50%) translateY(8px);width:320px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:0 0 16px 16px;box-shadow:var(--shadow);opacity:0;visibility:hidden;pointer-events:none;transition:.2s;z-index:40}
    .mega-menu{width:700px}
    .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)}
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;height:12px;top:-12px}
    .panel-title{margin:0 0 12px;color:var(--theme);font-size:15px}
    .panel-list{display:grid;gap:8px;margin:0}
    .panel-list a{display:block;color:#526278;font-size:13px}
    .panel-list a:hover{color:var(--theme)}
    .mega-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:26px}
    .mega-column{min-width:0}
    .mega-card{display:flex;gap:10px;padding:8px;border-radius:10px}
    .mega-card:hover{background:var(--ice)}
    .mega-card img{width:34px;height:34px;object-fit:cover;border-radius:8px;background:#eef4fb;flex:none}
    .mega-card span{display:grid;gap:1px;min-width:0}
    .mega-card strong{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .mega-card small{font-size:11px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .mega-footer{display:block;border-top:1px solid var(--line);margin-top:15px;padding-top:12px;color:var(--theme);font-size:13px;font-weight:700}
    .header-btns{display:flex;align-items:center;gap:9px;white-space:nowrap}
    .member-btn,.open-account{padding:8px 13px;border-radius:8px;font-size:13px;font-weight:700}
    .member-btn{color:var(--theme);border:1px solid #bfd3ec}
    .open-account{background:var(--theme);color:#fff}
    .member-btn:hover{background:var(--ice)}
    .open-account:hover{background:var(--theme-deep)}
    .hamburger{display:none;width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:9px;padding:9px;cursor:pointer}
    .hamburger span{height:2px;background:var(--theme);display:block;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(3,19,44,.5);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:.28s;z-index:60;overflow:auto;box-shadow:-15px 0 40px rgba(0,0,0,.15)}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{height:72px;display:flex;align-items:center;gap:14px;padding:0 20px;background:var(--theme);color:#fff;font-weight:700}
    .drawer-head span{flex:1}
    .drawer-head a{font-size:13px;border:1px solid rgba(255,255,255,.5);padding:4px 10px;border-radius:6px}
    .drawer-close{border:0;background:transparent;color:#fff;font-size:30px;line-height:1;cursor:pointer}
    .drawer-menu{padding:16px 20px 30px}
    .drawer-link,.drawer-toggle{width:100%;display:flex;align-items:center;justify-content:space-between;padding:13px 0;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--ink);font-weight:600;text-align:left;cursor:pointer}
    .drawer-toggle:after{content:"+";font-size:20px;color:var(--theme)}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:grid;gap:0;max-height:0;overflow:hidden;transition:max-height .25s;background:#f5f9ff;border-radius:8px}
    .drawer-submenu.open{max-height:600px;margin:5px 0 8px}
    .drawer-submenu a{padding:8px 12px;color:var(--muted);font-size:13px}

    .category-page{padding:58px 0 80px}
    .page-heading{position:relative;overflow:hidden;margin-bottom:34px;padding:42px 46px;border-radius:24px;background:linear-gradient(125deg,#eaf5ff 0%,#fff 58%,#dcecff 100%);border:1px solid #cfe0f4}
    .page-heading:after{content:"";position:absolute;width:230px;height:230px;right:8%;top:-125px;border:28px solid rgba(11,61,145,.08);border-radius:50%}
    .eyebrow{position:relative;z-index:1;margin:0 0 8px;color:var(--theme);font-size:13px;font-weight:800;letter-spacing:.16em}
    .page-heading h1{position:relative;z-index:1;margin:0 0 10px;font-size:clamp(28px,4vw,48px);line-height:1.2;color:#102b55}
    .page-heading p{position:relative;z-index:1;max-width:700px;margin:0;color:var(--muted);font-size:15px}
    .content-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:30px;align-items:start}
    .article-list{display:grid;gap:18px}
    .article-card{display:grid;grid-template-columns:280px minmax(0,1fr);gap:22px;padding:18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 24px rgba(20,60,110,.05);transition:.2s}
    .article-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:#bdd2ec}
    .article-cover{height:190px;overflow:hidden;border-radius:12px;background:#dceafa}
    .article-cover img{width:100%;height:100%;object-fit:cover}
    .article-body{min-width:0;display:flex;flex-direction:column}
    .article-category{display:inline-flex;align-self:flex-start;margin-bottom:7px;padding:3px 9px;border-radius:30px;background:var(--ice);color:var(--theme);font-size:12px}
    .article-title{margin:0 0 8px;font-size:20px;line-height:1.4;color:#152f57}
    .article-title a:hover{color:var(--theme)}
    .article-summary{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin:0 0 12px;color:var(--muted);font-size:14px;line-height:1.8}
    .article-meta{display:flex;flex-wrap:wrap;gap:8px 16px;margin-top:auto;color:#7b899b;font-size:12px}
    .article-tags{margin:10px 0 0;color:var(--theme);font-size:12px}
    .read-link{display:inline-flex;align-items:center;gap:7px;margin-top:12px;color:var(--theme);font-size:13px;font-weight:800}
    .read-link:after{content:"→";font-size:18px;transition:.2s}
    .read-link:hover:after{transform:translateX(4px)}
    .sidebar{display:grid;gap:18px}
    .side-card{padding:22px;background:#fff;border:1px solid var(--line);border-radius:16px}
    .side-card h2{margin:0 0 14px;color:#18345d;font-size:18px}
    .side-card p{margin:0;color:var(--muted);font-size:13px}
    .side-links{display:grid;gap:10px}
    .side-links a{padding:10px 12px;border-radius:8px;background:#f3f7fc;color:#4d607a;font-size:13px}
    .side-links a:hover{background:var(--ice);color:var(--theme)}
    .pagination{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin-top:34px}
    .pagination a{min-width:36px;padding:6px 12px;text-align:center;border:1px solid var(--line);border-radius:8px;background:#fff;color:#526278;font-size:13px}
    .pagination a:hover,.pagination a.active{background:var(--theme);border-color:var(--theme);color:#fff}

    .footer{background:#071b3b;color:#c6d5e9;padding:52px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px}
    .footer strong{font-size:20px;color:#fff}
    .footer h3{margin:0 0 14px;color:#fff;font-size:15px}
    .footer p{margin:8px 0;color:#aebfd6;font-size:13px}
    .footer a{display:block;margin:8px 0;color:#aebfd6;font-size:13px}
    .footer a:hover{color:#fff}
    .footer-bottom{margin-top:35px;padding-top:18px;border-top:1px solid rgba(255,255,255,.13);color:#91a7c4;font-size:12px;text-align:center}

    @media (max-width:980px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-inner{height:68px}
      .nav-link{height:68px}
      .logo{min-width:0}
      .content-layout{grid-template-columns:1fr}
      .sidebar{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width:680px){
      .container{width:min(100% - 28px,1180px)}
      .topbar-inner{padding:8px 0;align-items:flex-start;flex-direction:column;gap:2px}
      .topbar-contact{gap:12px;flex-wrap:wrap}
      .header-inner{gap:10px}
      .logo{font-size:17px;flex:1}
      .logo img{width:31px;height:31px}
      .member-btn{display:none}
      .page-heading{padding:30px 24px;margin-bottom:22px}
      .category-page{padding:30px 0 54px}
      .article-card{grid-template-columns:1fr;gap:15px;padding:14px}
      .article-cover{height:190px}
      .article-title{font-size:18px}
      .sidebar{grid-template-columns:1fr}
      .footer{padding-top:38px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:25px 18px}
      .footer-brand{grid-column:1/-1}
    }