:root{
      --primary:#0B3D91;
      --primary-dark:#082d6d;
      --ink:#142033;
      --muted:#65748b;
      --line:#e5eaf1;
      --soft:#f4f7fb;
      --white:#fff;
      --accent:#f07d22;
      --shadow:0 16px 45px rgba(12,42,88,.1);
      --radius:18px
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;background:#fff;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;height:auto;display:block}
    button{font:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:auto}
    .skip-link{position:absolute;left:-9999px;top:auto}
    .skip-link:focus{left:20px;top:10px;z-index:1000;background:#fff;color:var(--primary);padding:10px 16px;border-radius:8px}
    .topbar{background:#092b63;color:#dbe8ff;font-size:13px}
    .topbar-inner{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar a{color:#fff;margin-left:20px}
    .header{position:relative;background:#fff;border-bottom:1px solid var(--line);z-index:20}
    .header-inner{min-height:76px;display:flex;align-items:center;gap:28px}
    .logo{display:inline-flex;align-items:center;gap:10px;font-weight:800;color:var(--primary);white-space:nowrap}
    .logo img{width:38px;height:38px;object-fit:contain}
    .logo span{font-size:18px}
    .main-nav{margin-left:auto}
    .nav-list{list-style:none;padding:0;margin:0;display:flex;align-items:stretch;gap:4px}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;min-height:76px;padding:0 14px;font-size:14px;font-weight:600;color:#2d3c52}
    .nav-link:hover,.nav-link:focus{color:var(--primary)}
    .has-arrow:after{content:"";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:100%;left:50%;transform:translateX(-50%);opacity:0;visibility:hidden;pointer-events:none;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:0 0 16px 16px;padding:22px;transition:.2s;z-index:50}
    .dropdown-panel{width:310px}
    .mega-menu{width:min(760px,calc(100vw - 30px))}
    .nav-item:after{content:"";position:absolute;height:15px;left:0;right:0;top:100%}
    .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-title,.mega-heading{display:flex;flex-direction:column;gap:3px;margin-bottom:15px}
    .dropdown-title,.mega-heading strong{font-size:16px;color:var(--primary)}
    .mega-heading span{font-size:12px;color:var(--muted)}
    .dropdown-article{display:block;padding:9px 0;border-bottom:1px solid var(--line);font-size:13px}
    .dropdown-article:hover,.dropdown-more:hover{color:var(--primary)}
    .dropdown-more,.mega-footer{display:block;color:var(--primary);font-size:13px;font-weight:700;padding-top:14px}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
    .mega-card{display:flex;gap:9px;padding:10px;border:1px solid var(--line);border-radius:10px;min-width:0}
    .mega-card:hover{border-color:#a9c0e8;background:#f8fbff}
    .mega-card img{width:38px;height:38px;object-fit:contain;flex:0 0 38px}
    .mega-card-content{min-width:0;display:block}
    .mega-card strong{display:block;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .mega-card p{font-size:11px;color:var(--muted);margin:3px 0;line-height:1.5}
    .mega-card-meta{display:flex;gap:8px;flex-wrap:wrap;color:var(--muted);font-size:10px}
    .mega-categories{display:flex;flex-wrap:wrap;gap:7px;margin:0 0 15px}
    .mega-categories a{font-size:12px;color:var(--primary);background:#eef4ff;padding:4px 9px;border-radius:20px}
    .header-btns{display:flex;align-items:center;gap:14px;white-space:nowrap}
    .header-btns>a{background:var(--primary);color:#fff;border-radius:7px;padding:9px 15px;font-size:13px}
    .hamburger{display:none;border:0;background:transparent;padding:6px;cursor:pointer}
    .hamburger span{display:block;width:24px;height:2px;background:var(--primary);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(5,20,45,.5);z-index:80}
    .drawer-overlay.open{display:block}
    .mobile-drawer{position:fixed;right:-390px;top:0;width:min(370px,88vw);height:100vh;background:#fff;z-index:90;box-shadow:-12px 0 30px rgba(0,0,0,.15);transition:.3s;overflow:auto}
    .mobile-drawer.open{right:0}
    .drawer-head{display:flex;align-items:center;gap:14px;padding:18px;border-bottom:1px solid var(--line);color:var(--primary);font-weight:700}
    .drawer-head>a{margin-left:auto;background:var(--primary);color:#fff;padding:6px 12px;border-radius:6px;font-size:13px}
    .drawer-close{border:0;background:none;font-size:28px;line-height:1;color:var(--muted);cursor:pointer}
    .drawer-menu{padding:12px 18px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;color:var(--ink);font-weight:600;cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--primary);font-size:20px}
    .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:8px 0;color:var(--muted);font-size:14px}
    .footer{background:#091d3b;color:#cfdbed;margin-top:70px}
    .footer-main{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:38px;padding:52px 0 38px}
    .footer .logo{color:#fff;margin-bottom:15px}
    .footer-brand p{margin:0;color:#aebed5;font-size:13px;line-height:1.9}
    .footer h3{font-size:15px;color:#fff;margin:4px 0 15px}
    .footer-links{display:flex;flex-direction:column;gap:8px;font-size:13px}
    .footer-links a:hover,.footer-contact a:hover{color:#fff}
    .footer-contact{display:flex;flex-direction:column;gap:9px;font-size:13px}
    .footer-social{display:flex;flex-direction:column;gap:4px;margin-top:8px}
    .footer-social strong{color:#fff;font-size:13px}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.13);display:flex;justify-content:space-between;gap:20px;padding:18px 0;font-size:12px;color:#9fb0c8}
    .footer-bottom-links{display:flex;gap:18px}
    .article-page{background:linear-gradient(180deg,#f6f9fd 0,#fff 390px);padding:58px 0 10px}
    .article-layout{display:grid;grid-template-columns:minmax(0,780px) 300px;gap:42px;align-items:start}
    .article-main{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 10px 35px rgba(24,58,100,.05);padding:38px 44px;min-width:0}
    .article-breadcrumb{font-size:13px;color:var(--muted);margin-bottom:22px}
    .article-breadcrumb a{color:var(--primary)}
    .article-title{font-size:clamp(28px,4vw,44px);line-height:1.25;letter-spacing:-.03em;margin:0 0 18px;color:#132b52}
    .article-meta{display:flex;flex-wrap:wrap;gap:16px;color:var(--muted);font-size:13px;padding-bottom:22px;border-bottom:1px solid var(--line)}
    .article-summary{font-size:17px;line-height:1.9;color:#40536d;background:#f4f8ff;border-left:4px solid var(--primary);padding:17px 20px;margin:28px 0}
    .article-cover{width:100%;max-height:420px;object-fit:cover;border-radius:12px;margin:0 0 28px}
    .article-content{font-size:16px;line-height:2;color:#34445a;min-width:0;max-width:100%;overflow-x:auto}
    .article-content img,.article-content table{max-width:100%}
    .article-content h2,.article-content h3{color:#173b73;line-height:1.4;margin:30px 0 13px}
    .article-content h2{font-size:25px;border-left:4px solid var(--accent);padding-left:12px}
    .article-content h3{font-size:20px}
    .article-content p{margin:0 0 18px}
    .article-content ul,.article-content ol{padding-left:25px}
    .article-content blockquote{margin:22px 0;padding:15px 20px;background:#f8fafc;border-radius:10px;color:#5a6b80}
    .article-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:30px;padding-top:22px;border-top:1px solid var(--line)}
    .article-tags a{font-size:12px;color:var(--primary);background:#eef4ff;border-radius:20px;padding:5px 11px}
    .article-pager{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:28px}
    .pager-item{border:1px solid var(--line);border-radius:12px;padding:15px;background:#fff}
    .pager-item.next{text-align:right}
    .pager-item small{display:block;color:var(--muted);font-size:12px;margin-bottom:5px}
    .pager-item strong{display:block;font-size:14px;color:var(--primary);font-weight:600}
    .article-side{display:flex;flex-direction:column;gap:18px;position:sticky;top:20px}
    .side-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:0 9px 28px rgba(17,54,100,.06)}
    .side-card h2{font-size:17px;margin:0 0 15px;color:#173b73}
    .side-card p{font-size:13px;color:var(--muted);margin:0;line-height:1.8}
    .side-list{display:flex;flex-direction:column;gap:13px}
    .side-list a{font-size:13px;line-height:1.55;padding-bottom:12px;border-bottom:1px solid var(--line)}
    .side-list a:last-child{border-bottom:0;padding-bottom:0}
    .side-list a:hover{color:var(--primary)}
    .risk-note{background:#fff8f2;border-color:#f8d7bd}
    .risk-note h2{color:#c45f16}
    @media(max-width:980px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-btns>a{display:none}
      .footer-main{grid-template-columns:repeat(2,1fr)}
      .article-layout{grid-template-columns:1fr}
      .article-side{position:static;display:grid;grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:640px){
      .container{width:min(100% - 28px,1180px)}
      .topbar-inner{padding:8px 0;align-items:flex-start;flex-direction:column;gap:2px}
      .topbar a{margin:0 14px 0 0}
      .header-inner{min-height:66px}
      .logo span{font-size:16px}
      .footer-main{grid-template-columns:1fr;gap:25px;padding:36px 0 28px}
      .footer-bottom{display:block;line-height:1.8}
      .footer-bottom-links{display:block;margin-top:5px}
      .footer-bottom-links span{margin-right:12px}
      .article-page{padding:30px 0 0}
      .article-main{padding:24px 19px;border-radius:13px}
      .article-title{font-size:30px}
      .article-summary{font-size:15px}
      .article-content{font-size:15px}
      .article-pager{grid-template-columns:1fr}
      .pager-item.next{text-align:left}
      .article-side{display:flex}
    }