:root{
      --theme:#0B3D91;
      --theme-dark:#072b68;
      --theme-soft:#edf3ff;
      --ink:#111827;
      --muted:#667085;
      --line:#e5e7eb;
      --surface:#ffffff;
      --page:#f6f8fb;
      --radius:16px;
      --shadow:0 18px 50px rgba(15,23,42,.08);
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:var(--page);
      font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;
      line-height:1.7;
    }
    body,button,input,textarea{font:inherit}
    img{max-width:100%;height:auto}
    a{color:inherit;text-decoration:none}
    button{color:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}

    .topbar{
      color:#dbe7ff;
      background:#06152f;
      border-bottom:1px solid rgba(255,255,255,.08);
      font-size:13px;
    }
    .topbar .container{
      min-height:36px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .topbar-links{display:flex;align-items:center;gap:22px}
    .topbar a:hover{color:#fff}

    .header{
      position:relative;
      z-index:80;
      background:rgba(255,255,255,.98);
      border-bottom:1px solid var(--line);
      box-shadow:0 5px 20px rgba(15,23,42,.04);
    }
    .header-inner{
      min-height:76px;
      display:flex;
      align-items:center;
      gap:28px;
    }
    .logo{
      flex:0 0 auto;
      display:flex;
      align-items:center;
      gap:11px;
      color:#0a2148;
      font-size:19px;
      font-weight:800;
      white-space:nowrap;
    }
    .logo img{
      width:42px;
      height:42px;
      object-fit:contain;
      border-radius:9px;
    }
    .main-nav{margin-left:auto;height:76px}
    .nav-list{
      height:100%;
      display:flex;
      align-items:stretch;
      gap:2px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .nav-item{
      position:relative;
      display:flex;
      align-items:center;
    }
    .nav-link{
      height:100%;
      display:flex;
      align-items:center;
      padding:0 12px;
      color:#263247;
      font-size:15px;
      font-weight:600;
      white-space:nowrap;
      transition:.2s ease;
    }
    .nav-link:hover,.nav-item:focus-within>.nav-link{
      color:var(--theme);
      background:var(--theme-soft);
    }
    .has-arrow::after{
      content:"";
      width:6px;
      height:6px;
      margin:0 0 4px 8px;
      border-right:1.5px solid currentColor;
      border-bottom:1.5px solid currentColor;
      transform:rotate(45deg);
    }
    .dropdown-panel,.mega-menu{
      position:absolute;
      top:100%;
      right:0;
      z-index:100;
      visibility:hidden;
      opacity:0;
      transform:translateY(8px);
      pointer-events:none;
      background:#fff;
      border:1px solid var(--line);
      border-top:3px solid var(--theme);
      border-radius:0 0 16px 16px;
      box-shadow:0 24px 55px rgba(15,23,42,.16);
      transition:opacity .18s ease,transform .18s ease,visibility .18s ease;
    }
    .dropdown-panel{
      left:0;
      right:auto;
      width:320px;
      padding:20px;
    }
    .mega-menu{
      position:fixed;
      top:112px;
      right:max(20px,calc((100vw - 1180px)/2));
      width:min(860px,calc(100vw - 40px));
      max-height:calc(100vh - 130px);
      padding:22px;
      overflow:auto;
    }
    .nav-item:hover>.dropdown-panel,
    .nav-item:hover>.mega-menu,
    .nav-item:focus-within>.dropdown-panel,
    .nav-item:focus-within>.mega-menu{
      visibility:visible;
      opacity:1;
      transform:translateY(0);
      pointer-events:auto;
    }
    .mega-title{
      margin:0 0 12px;
      color:#10203b;
      font-size:14px;
      font-weight:800;
      letter-spacing:.04em;
    }
    .dropdown-panel>a:not(.mega-footer){
      display:block;
      padding:10px 0;
      color:#344054;
      border-bottom:1px solid #edf0f4;
      font-size:14px;
    }
    .dropdown-panel>a:hover{color:var(--theme)}
    .mega-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:12px;
    }
    .mega-card{
      min-width:0;
      display:grid;
      grid-template-columns:38px minmax(0,1fr);
      align-items:center;
      gap:4px 10px;
      min-height:88px;
      padding:13px;
      background:#f8fafc;
      border:1px solid #e9edf3;
      border-radius:12px;
      transition:.2s ease;
    }
    .mega-card:hover{
      border-color:#b9cbed;
      background:var(--theme-soft);
      transform:translateY(-2px);
    }
    .mega-card img{
      grid-row:1/4;
      width:38px;
      height:38px;
      object-fit:contain;
      border-radius:8px;
      background:#fff;
    }
    .mega-card strong{
      min-width:0;
      overflow:hidden;
      color:#152238;
      font-size:14px;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .mega-card small{
      grid-column:2;
      min-width:0;
      overflow:hidden;
      color:#6b7280;
      font-size:12px;
      line-height:1.45;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .mega-card:not(:has(img)){display:block}
    .mega-card:not(:has(img)) small{
      display:block;
      margin-top:4px;
      white-space:normal;
    }
    .mega-footer{
      display:block;
      margin-top:16px;
      padding:11px 14px;
      color:#fff;
      background:var(--theme);
      border-radius:9px;
      text-align:center;
      font-size:14px;
      font-weight:700;
    }
    .mega-footer:hover{background:var(--theme-dark)}
    .header-btns{
      flex:0 0 auto;
      display:flex;
      align-items:center;
      gap:9px;
    }
    .member-btn{
      display:inline-flex;
      align-items:center;
      min-height:38px;
    }
    .open-account{
      display:inline-flex;
      min-height:40px;
      align-items:center;
      justify-content:center;
      padding:0 18px;
      color:#fff;
      background:var(--theme);
      border-radius:9px;
      font-size:14px;
      font-weight:700;
      box-shadow:0 8px 20px rgba(11,61,145,.2);
    }
    .open-account:hover{background:var(--theme-dark)}
    .hamburger{
      display:none;
      width:42px;
      height:42px;
      padding:9px;
      border:0;
      border-radius:9px;
      background:#eef2f7;
      cursor:pointer;
    }
    .hamburger span{
      display:block;
      width:100%;
      height:2px;
      margin:5px 0;
      background:#152238;
      transition:.2s ease;
    }
    .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{
      position:fixed;
      inset:0;
      z-index:140;
      visibility:hidden;
      opacity:0;
      background:rgba(2,8,23,.58);
      transition:.25s ease;
    }
    .drawer-overlay.open{visibility:visible;opacity:1}
    .mobile-drawer{
      position:fixed;
      top:0;
      right:0;
      z-index:150;
      width:min(390px,88vw);
      height:100vh;
      overflow-y:auto;
      background:#fff;
      box-shadow:-24px 0 60px rgba(0,0,0,.18);
      transform:translateX(105%);
      transition:transform .28s ease;
    }
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{
      min-height:72px;
      display:flex;
      align-items:center;
      gap:12px;
      padding:14px 18px;
      color:#fff;
      background:#071b3c;
    }
    .drawer-head>a{
      margin-left:auto;
      padding:7px 13px;
      color:#fff;
      background:var(--theme);
      border-radius:7px;
      font-size:14px;
    }
    .drawer-close{
      width:36px;
      height:36px;
      padding:0;
      color:#fff;
      background:rgba(255,255,255,.1);
      border:0;
      border-radius:8px;
      font-size:28px;
      line-height:1;
      cursor:pointer;
    }
    .drawer-menu{padding:12px 18px 28px}
    .drawer-link,.drawer-toggle{
      width:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding:14px 4px;
      color:#172033;
      background:none;
      border:0;
      border-bottom:1px solid #e9edf3;
      text-align:left;
      font-weight:700;
      cursor:pointer;
    }
    .drawer-toggle::after{
      content:"+";
      color:var(--theme);
      font-size:20px;
      font-weight:400;
    }
    .drawer-toggle.active::after{content:"−"}
    .drawer-submenu{
      display:none;
      padding:7px 0 8px 14px;
      border-bottom:1px solid #e9edf3;
    }
    .drawer-submenu.open{display:block}
    .drawer-submenu a{
      display:block;
      padding:9px 8px;
      color:#596579;
      font-size:14px;
    }
    .drawer-submenu a:hover{color:var(--theme)}

    .article-page{
      min-width:0;
      padding:34px 0 72px;
    }
    .article-page .breadcrumb{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:8px;
      margin-bottom:22px;
      color:#737d8e;
      font-size:14px;
    }
    .article-page .breadcrumb a:hover{color:var(--theme)}
    .article-page .breadcrumb span::before{
      content:"/";
      margin-right:8px;
      color:#b2b8c2;
    }
    .article-page .article-layout{
      display:grid;
      grid-template-columns:minmax(0,1fr) 310px;
      align-items:start;
      gap:28px;
    }
    .article-page .article-shell{
      min-width:0;
      overflow:hidden;
      background:#fff;
      border:1px solid var(--line);
      border-radius:20px;
      box-shadow:var(--shadow);
    }
    .article-page .article-head{
      padding:42px 48px 30px;
      border-bottom:1px solid var(--line);
      background:
        linear-gradient(135deg,rgba(11,61,145,.08),transparent 45%),
        #fff;
    }
    .article-page .category-mark{
      display:inline-flex;
      align-items:center;
      gap:7px;
      margin-bottom:18px;
      padding:6px 11px;
      color:var(--theme);
      background:var(--theme-soft);
      border-radius:999px;
      font-size:13px;
      font-weight:800;
    }
    .article-page .category-mark::before{
      content:"";
      width:7px;
      height:7px;
      background:var(--theme);
      border-radius:50%;
    }
    .article-page h1{
      margin:0;
      color:#101828;
      font-size:clamp(30px,4vw,48px);
      line-height:1.25;
      letter-spacing:-.025em;
    }
    .article-page .article-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px 22px;
      margin-top:22px;
      color:#697386;
      font-size:14px;
    }
    .article-page .article-meta span{
      display:inline-flex;
      align-items:center;
      gap:7px;
    }
    .article-page .article-meta span::before{
      content:"";
      width:6px;
      height:6px;
      background:#a7b2c3;
      border-radius:50%;
    }
    .article-page .article-body{
      min-width:0;
      max-width:100%;
      padding:38px 48px 44px;
      overflow-x:auto;
      color:#303b4d;
      font-size:17px;
      line-height:1.95;
    }
    .article-page .article-body> :first-child{margin-top:0}
    .article-page .article-body h2,
    .article-page .article-body h3,
    .article-page .article-body h4{
      color:#111827;
      line-height:1.4;
    }
    .article-page .article-body h2{
      margin:38px 0 16px;
      padding-left:14px;
      border-left:4px solid var(--theme);
      font-size:27px;
    }
    .article-page .article-body h3{margin:30px 0 13px;font-size:22px}
    .article-page .article-body p{margin:0 0 20px}
    .article-page .article-body a{
      color:var(--theme);
      text-decoration:underline;
      text-underline-offset:3px;
    }
    .article-page .article-body img,
    .article-page .article-body video,
    .article-page .article-body iframe{
      max-width:100%;
      border-radius:12px;
    }
    .article-page .article-body table{
      width:100%;
      max-width:100%;
      border-collapse:collapse;
    }
    .article-page .article-body th,
    .article-page .article-body td{
      padding:12px;
      border:1px solid #d9dee7;
    }
    .article-page .article-body blockquote{
      margin:26px 0;
      padding:18px 22px;
      color:#34415a;
      background:#f2f6fc;
      border-left:4px solid var(--theme);
      border-radius:0 10px 10px 0;
    }
    .article-page .article-tags{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:9px;
      padding:0 48px 32px;
      color:#657086;
      font-size:14px;
    }
    .article-page .article-tags strong{color:#263247}
    .article-page .article-tags a{
      display:inline-flex;
      padding:6px 11px;
      color:var(--theme);
      background:var(--theme-soft);
      border-radius:999px;
    }
    .article-page .article-navigation{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:14px;
      padding:28px 48px 40px;
      border-top:1px solid var(--line);
    }
    .article-page .article-navigation a{
      min-width:0;
      padding:17px 18px;
      background:#f7f9fc;
      border:1px solid #e5eaf1;
      border-radius:12px;
      transition:.2s ease;
    }
    .article-page .article-navigation a:hover{
      border-color:#b7c8e8;
      background:var(--theme-soft);
    }
    .article-page .article-navigation small{
      display:block;
      margin-bottom:5px;
      color:#7b8494;
    }
    .article-page .article-navigation strong{
      display:block;
      overflow:hidden;
      color:#202b3d;
      font-size:15px;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .article-page .article-navigation .next{text-align:right}
    .article-page .article-sidebar{
      position:sticky;
      top:24px;
      display:grid;
      gap:18px;
    }
    .article-page .side-card{
      padding:22px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:16px;
      box-shadow:0 12px 35px rgba(15,23,42,.05);
    }
    .article-page .side-card h2{
      margin:0 0 13px;
      color:#172033;
      font-size:19px;
    }
    .article-page .side-card p{
      margin:0 0 16px;
      color:#697386;
      font-size:14px;
    }
    .article-page .side-actions{display:grid;gap:10px}
    .article-page .side-actions a{
      display:flex;
      min-height:42px;
      align-items:center;
      justify-content:center;
      padding:8px 12px;
      color:#fff;
      background:var(--theme);
      border-radius:9px;
      font-size:14px;
      font-weight:700;
    }
    .article-page .side-actions a:last-child{
      color:var(--theme);
      background:var(--theme-soft);
    }
    .article-page .risk-note{
      padding:19px 20px;
      color:#5d6676;
      background:#fffaf0;
      border:1px solid #f1dfb5;
      border-radius:14px;
      font-size:13px;
    }
    .article-page .related-section{
      margin-top:34px;
      padding:32px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:20px;
      box-shadow:var(--shadow);
    }
    .article-page .section-heading{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:20px;
      margin-bottom:20px;
    }
    .article-page .section-heading h2{
      margin:0;
      color:#111827;
      font-size:26px;
    }
    .article-page .section-heading p{
      margin:0;
      color:#7a8495;
      font-size:14px;
    }
    .article-page .related-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:18px;
    }
    .article-page .related-card{
      min-width:0;
      overflow:hidden;
      background:#fff;
      border:1px solid #e5e9f0;
      border-radius:14px;
      transition:.22s ease;
    }
    .article-page .related-card:hover{
      border-color:#b7c8e8;
      box-shadow:0 14px 30px rgba(11,61,145,.1);
      transform:translateY(-3px);
    }
    .article-page .related-card img{
      width:100%;
      height:150px;
      display:block;
      object-fit:cover;
      background:#edf1f6;
    }
    .article-page .related-body{padding:16px}
    .article-page .related-body h3{
      display:-webkit-box;
      min-height:48px;
      margin:0 0 9px;
      overflow:hidden;
      color:#182235;
      font-size:16px;
      line-height:1.5;
      -webkit-box-orient:vertical;
      -webkit-line-clamp:2;
    }
    .article-page .related-body p{
      display:-webkit-box;
      min-height:44px;
      margin:0 0 13px;
      overflow:hidden;
      color:#6c7688;
      font-size:13px;
      line-height:1.65;
      -webkit-box-orient:vertical;
      -webkit-line-clamp:2;
    }
    .article-page .related-meta{
      display:flex;
      justify-content:space-between;
      gap:10px;
      color:#8991a0;
      font-size:12px;
    }

    .footer{
      color:#cbd3df;
      background:#071426;
      border-top:4px solid var(--theme);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.35fr repeat(3,1fr);
      gap:44px;
      padding:58px 0 42px;
    }
    .footer h3{
      margin:0 0 17px;
      color:#fff;
      font-size:15px;
    }
    .footer-brand strong{
      display:block;
      margin-bottom:13px;
      color:#fff;
      font-size:21px;
    }
    .footer p{
      margin:0 0 14px;
      color:#9eabba;
      font-size:14px;
    }
    .footer-grid>div:not(.footer-brand)>a{
      display:block;
      margin:9px 0;
      color:#aeb9c8;
      font-size:14px;
    }
    .footer a:hover{color:#fff}
    .footer-bottom{
      min-height:65px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      color:#8390a1;
      border-top:1px solid rgba(255,255,255,.1);
      font-size:13px;
    }

    @media (max-width:1080px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-inner{min-height:68px}
      .header-btns{margin-left:auto}
      .article-page .article-layout{grid-template-columns:minmax(0,1fr) 280px}
      .article-page .article-head,
      .article-page .article-body{padding-left:34px;padding-right:34px}
      .article-page .article-tags{padding-left:34px;padding-right:34px}
      .article-page .article-navigation{padding-left:34px;padding-right:34px}
    }
    @media (max-width:820px){
      .article-page{padding-top:24px}
      .article-page .article-layout{grid-template-columns:1fr}
      .article-page .article-sidebar{position:static;grid-template-columns:repeat(2,minmax(0,1fr))}
      .article-page .related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
      .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    }
    @media (max-width:620px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{min-height:40px}
      .topbar .container>span{display:none}
      .topbar-links{width:100%;justify-content:space-between;gap:10px}
      .topbar-links a{font-size:12px}
      .logo span{max-width:130px;overflow:hidden;text-overflow:ellipsis}
      .logo img{width:37px;height:37px}
      .member-btn{display:none}
      .open-account{padding:0 13px}
      .article-page .article-head{padding:29px 22px 24px}
      .article-page h1{font-size:29px}
      .article-page .article-body{padding:27px 22px 32px;font-size:16px}
      .article-page .article-tags{padding:0 22px 25px}
      .article-page .article-navigation{
        grid-template-columns:1fr;
        padding:23px 22px 30px;
      }
      .article-page .article-navigation .next{text-align:left}
      .article-page .article-sidebar{grid-template-columns:1fr}
      .article-page .related-section{padding:23px 18px}
      .article-page .section-heading{display:block}
      .article-page .section-heading p{margin-top:5px}
      .article-page .related-grid{grid-template-columns:1fr}
      .article-page .related-card{display:grid;grid-template-columns:112px minmax(0,1fr)}
      .article-page .related-card img{width:112px;height:100%;min-height:150px}
      .article-page .related-body{padding:14px}
      .footer-grid{grid-template-columns:1fr;gap:26px;padding:42px 0 30px}
      .footer-bottom{align-items:flex-start;flex-direction:column;padding:20px 0}
    }