:root{--blue:#0B3D91;--ink:#10243c;--ice:#edf5fb;--line:#d9e5ef;--muted:#6c7d90;--white:#fff}
    *{box-sizing:border-box}
    html,body{margin:0;padding:0;color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;background:#f6f9fc;line-height:1.65}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(1180px,calc(100% - 40px));margin:auto}
    .topbar{background:#092c68;color:#dceafe;font-size:13px}
    .topbar .container{min-height:36px;display:flex;align-items:center;justify-content:space-between}
    .topbar-info{display:flex;gap:22px}
    .topbar a:hover{color:#fff}
    .header{background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:20}
    .header-inner{height:76px;display:flex;align-items:center;gap:30px}
    .logo{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--blue);font-size:20px;white-space:nowrap}
    .logo img{width:38px;height:38px;object-fit:contain}
    .main-nav{margin-left:auto}
    .nav-list{display:flex;align-items:stretch;gap:4px;margin:0;padding:0;list-style:none}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;height:76px;padding:0 13px;font-size:15px;white-space:nowrap}
    .nav-link:hover,.nav-link:focus{color:var(--blue)}
    .has-arrow:after{content:"";width:6px;height:6px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg);margin:0 0 4px 8px}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% - 1px);left:50%;transform:translateX(-50%);background:#fff;border:1px solid var(--line);box-shadow:0 18px 40px #1534561a;border-radius:0 0 12px 12px;padding:18px;opacity:0;visibility:hidden;pointer-events:none;transition:.2s;z-index:50}
    .dropdown-panel{width:250px}
    .dropdown-panel a{display:block;padding:8px 4px;border-bottom:1px solid #eef3f7;font-size:14px}
    .mega-menu{width:650px}
    .nav-item:hover>.mega-menu,.nav-item:focus-within>.mega-menu,.nav-item:hover>.dropdown-panel,.nav-item:focus-within>.dropdown-panel{opacity:1;visibility:visible;pointer-events:auto}
    .mega-title{font-size:13px;font-weight:800;color:var(--blue);margin-bottom:12px}
    .mega-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
    .mega-card{display:flex;gap:10px;padding:10px;border:1px solid #e7eef5;border-radius:8px;background:#fbfdff}
    .mega-card:hover{border-color:#9cb8db;background:#f1f7fd}
    .mega-card img{width:38px;height:38px;object-fit:contain;border-radius:6px;flex:0 0 auto}
    .mega-card strong,.mega-card small{display:block}
    .mega-card strong{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .mega-card small{font-size:11px;color:var(--muted);line-height:1.45;margin-top:3px}
    .mega-links{display:flex;flex-wrap:wrap;gap:8px}
    .mega-links a{padding:5px 10px;border-radius:20px;background:var(--ice);font-size:12px;color:var(--blue)}
    .mega-footer{display:block;color:var(--blue);font-size:13px;font-weight:700;margin-top:15px;padding-top:13px;border-top:1px solid var(--line)}
    .header-btns{display:flex;align-items:center;gap:10px}
    .member-link{font-size:13px;color:var(--blue);white-space:nowrap}
    .open-account{background:var(--blue);color:#fff;border-radius:6px;padding:8px 14px;font-size:13px;white-space:nowrap}
    .hamburger{display:none;border:0;background:none;padding:6px;cursor:pointer}
    .hamburger span{display:block;width:24px;height:2px;background:var(--blue);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:#071a3080;z-index:80}
    .drawer-overlay.open{display:block}
    .mobile-drawer{position:fixed;right:0;top:0;width:min(360px,88%);height:100vh;background:#fff;z-index:90;transform:translateX(100%);transition:.25s;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{height:68px;background:var(--blue);color:#fff;display:flex;align-items:center;gap:15px;padding:0 20px;font-weight:700}
    .drawer-head a{margin-left:auto;color:#fff;border:1px solid #ffffff80;border-radius:5px;padding:4px 10px;font-size:13px}
    .drawer-close{border:0;background:none;color:#fff;font-size:28px;line-height:1;cursor:pointer}
    .drawer-menu{padding:12px 20px 40px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 3px;border-bottom:1px solid #e8eef4;text-align:left;background:none;border-top:0;border-left:0;border-right:0;font-size:15px;color:var(--ink);cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--blue);font-size:20px;line-height:1}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:none;padding:4px 14px;background:#f5f9fd;border-radius:6px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:9px 0;font-size:13px;color:#536a82;border-bottom:1px solid #e3ebf3}
    .footer{margin-top:70px;background:#0a203d;color:#bdcde0;padding:48px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px}
    .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:20px;font-weight:800;margin-bottom:15px}
    .footer-brand img{width:36px;height:36px;object-fit:contain}
    .footer p{font-size:13px;line-height:1.8;margin:0;color:#a9bdd4}
    .footer h3{color:#fff;font-size:15px;margin:0 0 15px}
    .footer-links{display:flex;flex-direction:column;gap:8px;font-size:13px}
    .footer-links a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #ffffff1c;margin-top:35px;padding-top:18px;font-size:12px;color:#91a8c1}
    .article-page{padding:54px 0 20px}
    .article-wrap{max-width:900px;margin:auto}
    .article-breadcrumb{font-size:13px;color:var(--muted);margin-bottom:20px}
    .article-breadcrumb a{color:var(--blue)}
    .article-head{background:#fff;border:1px solid var(--line);border-radius:14px;padding:34px 42px 28px;text-align:center}
    .article-head h1{font-size:clamp(26px,4vw,42px);line-height:1.25;margin:0 auto 18px;color:#102d52}
    .article-meta{display:flex;justify-content:center;flex-wrap:wrap;gap:18px;color:var(--muted);font-size:13px}
    .article-meta span{display:inline-flex;align-items:center;gap:5px}
    .article-tags{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;margin-top:18px}
    .article-tags a{font-size:12px;color:var(--blue);background:#edf5fc;border-radius:20px;padding:4px 11px}
    .article-cover{width:100%;max-height:480px;object-fit:cover;border-radius:12px;margin:26px 0 0}
    .article-content{background:#fff;border:1px solid var(--line);border-radius:14px;margin-top:22px;padding:38px 44px;min-width:0;max-width:100%;overflow-x:auto}
    .article-content>*{max-width:100%}
    .article-content h2,.article-content h3{color:#123e73;margin:26px 0 12px}
    .article-content p{margin:0 0 18px;color:#40566d;font-size:16px}
    .article-content img,.article-content table{max-width:100%;height:auto}
    .article-content blockquote{margin:22px 0;padding:14px 20px;border-left:4px solid var(--blue);background:#f0f6fc;color:#50677d}
    .article-nav{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin-top:22px}
    .article-nav a{display:block;background:#fff;border:1px solid var(--line);border-radius:10px;padding:15px;color:#526a81;font-size:14px}
    .article-nav a:hover{border-color:var(--blue);color:var(--blue)}
    .article-nav a:last-child{text-align:right}
    .like-articles{margin-top:34px}
    .like-articles h2{font-size:21px;color:#123e73;margin:0 0 15px}
    .like-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}
    .like-card{display:block;background:#fff;border:1px solid var(--line);border-radius:10px;overflow:hidden}
    .like-card img{width:100%;height:120px;object-fit:cover}
    .like-card div{padding:12px}
    .like-card strong{display:block;font-size:14px;line-height:1.5}
    .like-card small{display:block;color:var(--muted);font-size:12px;margin-top:5px}
    @media(max-width:1050px){
      .main-nav{display:none}
      .hamburger{display:block}
      .member-link{display:none}
      .header-inner{justify-content:space-between}
      .footer-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:640px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{display:block;padding:7px 0}
      .topbar-info{gap:12px;margin-top:2px;flex-wrap:wrap}
      .open-account{display:none}
      .header-inner{height:66px}
      .article-page{padding-top:28px}
      .article-head{padding:25px 18px 22px}
      .article-content{padding:25px 20px}
      .article-content p{font-size:15px}
      .article-nav{grid-template-columns:1fr}
      .article-nav a:last-child{text-align:left}
      .like-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr;gap:25px}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-top:5px}
    }