:root{
      --primary:#0B3D91;
      --primary-dark:#072b68;
      --primary-soft:#eaf1ff;
      --coral:#f1785b;
      --cream:#fff9ef;
      --ink:#252932;
      --muted:#667085;
      --line:#e5e9f0;
      --surface:#ffffff;
      --page:#f6f8fc;
      --success:#14835d;
      --shadow:0 18px 50px rgba(27,39,66,.10);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:var(--page);
      font-family:"Microsoft YaHei","PingFang SC","Noto Sans SC",Arial,sans-serif;
      line-height:1.7;
      overflow-x:hidden;
    }
    body,button,input,textarea,select{font:inherit}
    img{max-width:100%;display:block}
    a{color:inherit;text-decoration:none}
    button{border:0}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}

    .topbar{
      min-height:38px;
      color:#dce7ff;
      background:#06265e;
      font-size:13px;
    }
    .topbar .container{
      min-height:38px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
    }
    .topbar-links{display:flex;align-items:center;gap:20px}
    .topbar a{transition:color .2s ease}
    .topbar a:hover{color:#fff}

    .header{
      position:relative;
      z-index:60;
      background:rgba(255,255,255,.98);
      border-bottom:1px solid var(--line);
      box-shadow:0 5px 20px rgba(23,38,72,.04);
    }
    .header-inner{
      min-height:78px;
      display:flex;
      align-items:center;
      gap:24px;
    }
    .logo{
      display:inline-flex;
      align-items:center;
      gap:11px;
      min-width:0;
      color:var(--primary);
      font-weight:800;
      letter-spacing:.01em;
    }
    .logo img{
      width:42px;
      height:42px;
      flex:0 0 42px;
      object-fit:contain;
      border-radius:10px;
    }
    .logo span{
      max-width:190px;
      overflow:hidden;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .main-nav{margin-left:auto;align-self:stretch}
    .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 13px;
      color:#30384a;
      font-size:15px;
      font-weight:650;
      white-space:nowrap;
      transition:color .2s ease,background .2s ease;
    }
    .nav-link:hover,
    .nav-item:focus-within>.nav-link{
      color:var(--primary);
      background:var(--primary-soft);
    }
    .has-arrow::after{
      content:"";
      width:6px;
      height:6px;
      margin-left:7px;
      border-right:1.5px solid currentColor;
      border-bottom:1.5px solid currentColor;
      transform:rotate(45deg) translateY(-2px);
      transition:transform .2s ease;
    }
    .nav-item:hover .has-arrow::after,
    .nav-item:focus-within .has-arrow::after{
      transform:rotate(225deg) translate(-1px,-1px);
    }
    .dropdown-panel,
    .mega-menu{
      position:absolute;
      top:100%;
      z-index:80;
      visibility:hidden;
      opacity:0;
      pointer-events:none;
      transform:translateY(9px);
      transition:opacity .2s ease,transform .2s ease,visibility .2s;
    }
    .dropdown-panel::before,
    .mega-menu::before{
      content:"";
      position:absolute;
      right:0;
      bottom:100%;
      left:0;
      height:12px;
    }
    .nav-item:hover>.dropdown-panel,
    .nav-item:focus-within>.dropdown-panel,
    .nav-item:hover>.mega-menu,
    .nav-item:focus-within>.mega-menu{
      visibility:visible;
      opacity:1;
      pointer-events:auto;
      transform:translateY(0);
    }
    .dropdown-panel{
      left:0;
      width:340px;
      padding-top:10px;
    }
    .dropdown-inner,
    .mega-inner{
      overflow:hidden;
      background:#fff;
      border:1px solid var(--line);
      border-radius:16px;
      box-shadow:0 24px 60px rgba(14,35,76,.16);
    }
    .dropdown-inner{padding:12px}
    .dropdown-inner>a:not(.mega-footer){
      display:block;
      padding:10px 12px;
      overflow:hidden;
      color:#394256;
      border-radius:9px;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .dropdown-inner>a:not(.mega-footer):hover{
      color:var(--primary);
      background:var(--primary-soft);
    }
    .mega-menu{
      left:50%;
      width:min(900px,calc(100vw - 40px));
      padding-top:10px;
      transform:translate(-50%,9px);
    }
    .nav-item:hover>.mega-menu,
    .nav-item:focus-within>.mega-menu{transform:translate(-50%,0)}
    .mega-inner{padding:22px}
    .mega-heading{
      margin:0 0 14px;
      color:#20283a;
      font-size:14px;
      font-weight:800;
    }
    .mega-grid{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:10px;
    }
    .mega-card{
      min-width:0;
      display:flex;
      align-items:center;
      gap:11px;
      padding:11px;
      background:#f8faff;
      border:1px solid #edf0f5;
      border-radius:12px;
      transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease;
    }
    .mega-card:hover{
      transform:translateY(-2px);
      border-color:#b8caea;
      box-shadow:0 10px 24px rgba(11,61,145,.08);
    }
    .mega-card img{
      width:48px;
      height:48px;
      flex:0 0 48px;
      object-fit:cover;
      background:#fff;
      border-radius:10px;
    }
    .mega-card span{min-width:0}
    .mega-card strong,
    .mega-card small{
      display:block;
      overflow:hidden;
      text-overflow:ellipsis;
    }
    .mega-card strong{
      color:#263149;
      font-size:14px;
      white-space:nowrap;
    }
    .mega-card small{
      margin-top:3px;
      color:var(--muted);
      font-size:12px;
      line-height:1.45;
      white-space:nowrap;
    }
    .mega-columns{
      display:grid;
      grid-template-columns:220px minmax(0,1fr);
      gap:24px;
    }
    .mega-links{display:grid;gap:6px}
    .mega-links a{
      padding:8px 10px;
      color:#485269;
      border-radius:8px;
    }
    .mega-links a:hover{
      color:var(--primary);
      background:var(--primary-soft);
    }
    .mega-footer{
      display:block;
      margin-top:16px;
      padding:11px 14px;
      color:var(--primary);
      background:var(--primary-soft);
      border-radius:10px;
      text-align:center;
      font-size:14px;
      font-weight:800;
    }
    .header-btns{
      display:flex;
      align-items:center;
      gap:9px;
    }
    .member-btn,
    .open-btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:40px;
      padding:0 16px;
      border-radius:10px;
      font-size:14px;
      font-weight:750;
      white-space:nowrap;
    }
    .member-btn{
      color:var(--primary);
      background:var(--primary-soft);
    }
    .open-btn{
      color:#fff;
      background:var(--primary);
      box-shadow:0 8px 20px rgba(11,61,145,.20);
    }
    .member-btn:hover{background:#dce8ff}
    .open-btn:hover{background:var(--primary-dark)}
    .hamburger{
      width:43px;
      height:43px;
      display:none;
      align-items:center;
      justify-content:center;
      flex-direction:column;
      gap:5px;
      padding:0;
      color:var(--primary);
      background:var(--primary-soft);
      border-radius:10px;
      cursor:pointer;
    }
    .hamburger span{
      width:20px;
      height:2px;
      background:currentColor;
      border-radius:4px;
      transition:transform .2s ease,opacity .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:89;
      visibility:hidden;
      opacity:0;
      background:rgba(5,16,39,.58);
      backdrop-filter:blur(3px);
      transition:opacity .25s ease,visibility .25s;
    }
    .drawer-overlay.open{visibility:visible;opacity:1}
    .mobile-drawer{
      position:fixed;
      top:0;
      right:0;
      bottom:0;
      z-index:90;
      width:min(390px,88vw);
      overflow-y:auto;
      background:#fff;
      box-shadow:-20px 0 60px rgba(0,0,0,.18);
      transform:translateX(105%);
      transition:transform .28s ease;
    }
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{
      position:sticky;
      top:0;
      z-index:2;
      min-height:70px;
      display:flex;
      align-items:center;
      gap:12px;
      padding:14px 18px;
      color:#fff;
      background:var(--primary);
    }
    .drawer-head strong{margin-right:auto}
    .drawer-head>a{
      padding:7px 12px;
      color:var(--primary);
      background:#fff;
      border-radius:8px;
      font-weight:750;
    }
    .drawer-close{
      width:36px;
      height:36px;
      color:#fff;
      background:rgba(255,255,255,.14);
      border-radius:9px;
      font-size:26px;
      line-height:1;
      cursor:pointer;
    }
    .drawer-menu{padding:14px 18px 30px}
    .drawer-link,
    .drawer-toggle{
      width:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding:13px 4px;
      color:#283247;
      background:transparent;
      border-bottom:1px solid var(--line);
      text-align:left;
      font-weight:750;
      cursor:pointer;
    }
    .drawer-toggle::after{
      content:"+";
      color:var(--primary);
      font-size:20px;
      font-weight:400;
    }
    .drawer-toggle.active::after{content:"−"}
    .drawer-submenu{
      max-height:0;
      overflow:hidden;
      background:#f7f9fd;
      border-radius:0 0 10px 10px;
      transition:max-height .3s ease;
    }
    .drawer-submenu.open{max-height:800px}
    .drawer-submenu a{
      display:block;
      padding:10px 14px;
      color:#566078;
      border-bottom:1px solid #e9edf4;
      font-size:14px;
    }
    .drawer-submenu a:hover{color:var(--primary)}

    .article-page{
      min-height:600px;
      padding:28px 0 72px;
    }
    .article-page .breadcrumb{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:8px;
      margin-bottom:22px;
      color:#737d91;
      font-size:14px;
    }
    .article-page .breadcrumb a:hover{color:var(--primary)}
    .article-page .breadcrumb span:last-child{
      max-width:520px;
      overflow:hidden;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .article-page .article-layout{
      display:grid;
      grid-template-columns:minmax(0,1fr) 300px;
      align-items:start;
      gap:28px;
    }
    .article-page .article-card{
      min-width:0;
      overflow:hidden;
      background:#fff;
      border:1px solid var(--line);
      border-radius:22px;
      box-shadow:var(--shadow);
    }
    .article-page .article-head{
      padding:38px 44px 28px;
      background:
        radial-gradient(circle at 92% 8%,rgba(241,120,91,.13),transparent 25%),
        linear-gradient(145deg,#fff 0%,#fffaf4 100%);
      border-bottom:1px solid var(--line);
    }
    .article-page .category-label{
      display:inline-flex;
      align-items:center;
      gap:7px;
      margin-bottom:16px;
      padding:6px 11px;
      color:var(--primary);
      background:var(--primary-soft);
      border-radius:999px;
      font-size:13px;
      font-weight:800;
    }
    .article-page .category-label::before{
      content:"";
      width:7px;
      height:7px;
      background:var(--coral);
      border-radius:50%;
    }
    .article-page .article-title{
      margin:0;
      color:#1e2738;
      font-size:clamp(28px,4vw,44px);
      line-height:1.25;
      letter-spacing:-.025em;
    }
    .article-page .article-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px 20px;
      margin-top:21px;
      color:#687287;
      font-size:14px;
    }
    .article-page .article-meta span{
      display:inline-flex;
      align-items:center;
      gap:7px;
    }
    .article-page .meta-dot{
      width:7px;
      height:7px;
      background:#a6b0c2;
      border-radius:50%;
    }
    .article-page .article-tags{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:8px;
      margin-top:18px;
    }
    .article-page .article-tags>span{
      color:#59647a;
      font-size:14px;
      font-weight:750;
    }
    .article-page .article-tags a{
      display:inline-flex;
      padding:5px 10px;
      color:var(--primary);
      background:#fff;
      border:1px solid #d9e3f5;
      border-radius:999px;
      font-size:13px;
    }
    .article-page .article-tags a:hover{
      color:#fff;
      background:var(--primary);
      border-color:var(--primary);
    }
    .article-page .article-content{
      min-width:0;
      max-width:100%;
      overflow-x:auto;
      padding:36px 44px 44px;
      color:#333d50;
      font-size:17px;
      line-height:1.95;
    }
    .article-page .article-content>*:first-child{margin-top:0}
    .article-page .article-content h2,
    .article-page .article-content h3,
    .article-page .article-content h4{
      scroll-margin-top:24px;
      color:#1f2b42;
      line-height:1.4;
    }
    .article-page .article-content h2{
      margin:38px 0 16px;
      padding-left:14px;
      border-left:4px solid var(--coral);
      font-size:27px;
    }
    .article-page .article-content h3{margin:30px 0 13px;font-size:22px}
    .article-page .article-content p{margin:0 0 20px}
    .article-page .article-content a{
      color:var(--primary);
      text-decoration:underline;
      text-underline-offset:3px;
    }
    .article-page .article-content img{
      height:auto;
      margin:26px auto;
      border-radius:14px;
    }
    .article-page .article-content table{
      width:100%;
      max-width:100%;
      margin:24px 0;
      border-collapse:collapse;
    }
    .article-page .article-content th,
    .article-page .article-content td{
      min-width:120px;
      padding:12px;
      border:1px solid #dfe4ec;
      text-align:left;
    }
    .article-page .article-content th{background:#f1f5fc}
    .article-page .article-content blockquote{
      margin:25px 0;
      padding:18px 22px;
      color:#4b566d;
      background:var(--cream);
      border-left:4px solid var(--coral);
      border-radius:0 12px 12px 0;
    }
    .article-page .article-content pre{
      max-width:100%;
      overflow:auto;
      padding:18px;
      color:#e8f0ff;
      background:#172033;
      border-radius:12px;
    }
    .article-page .risk-note{
      margin:0 44px 38px;
      padding:16px 18px;
      color:#6b532f;
      background:#fff8e7;
      border:1px solid #f1dfb7;
      border-radius:12px;
      font-size:14px;
    }
    .article-page .post-navigation{
      display:grid;
      grid-template-columns:repeat(2,minmax(0,1fr));
      gap:14px;
      padding:0 44px 42px;
    }
    .article-page .post-navigation a{
      min-width:0;
      padding:17px 18px;
      color:#39445a;
      background:#f7f9fd;
      border:1px solid var(--line);
      border-radius:13px;
      transition:border-color .2s ease,transform .2s ease;
    }
    .article-page .post-navigation a:hover{
      transform:translateY(-2px);
      border-color:#b9c9e5;
    }
    .article-page .post-navigation small{
      display:block;
      margin-bottom:5px;
      color:#8790a2;
    }
    .article-page .post-navigation strong{
      display:block;
      overflow:hidden;
      text-overflow:ellipsis;
      white-space:nowrap;
    }
    .article-page .post-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:17px;
      box-shadow:0 12px 34px rgba(30,44,72,.07);
    }
    .article-page .side-card h2{
      margin:0 0 13px;
      color:#263149;
      font-size:18px;
    }
    .article-page .side-card p{
      margin:0;
      color:#697389;
      font-size:14px;
    }
    .article-page .side-actions{
      display:grid;
      gap:9px;
      margin-top:17px;
    }
    .article-page .side-actions a{
      display:flex;
      align-items:center;
      justify-content:center;
      min-height:42px;
      padding:8px 12px;
      border-radius:10px;
      font-size:14px;
      font-weight:800;
    }
    .article-page .side-actions a:first-child{
      color:#fff;
      background:var(--primary);
    }
    .article-page .side-actions a:last-child{
      color:var(--primary);
      background:var(--primary-soft);
    }
    .article-page .reading-points{
      margin:0;
      padding:0;
      list-style:none;
    }
    .article-page .reading-points li{
      position:relative;
      padding:9px 0 9px 18px;
      color:#566177;
      border-bottom:1px solid #edf0f5;
      font-size:14px;
    }
    .article-page .reading-points li:last-child{border-bottom:0}
    .article-page .reading-points li::before{
      content:"";
      position:absolute;
      top:18px;
      left:0;
      width:7px;
      height:7px;
      background:var(--coral);
      border-radius:50%;
    }
    .article-page .related-section{margin-top:34px}
    .article-page .section-heading{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:20px;
      margin-bottom:18px;
    }
    .article-page .section-heading h2{
      margin:0;
      color:#202b41;
      font-size:28px;
    }
    .article-page .section-heading p{
      margin:0;
      color:#778196;
      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 var(--line);
      border-radius:16px;
      transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
    }
    .article-page .related-card:hover{
      transform:translateY(-4px);
      border-color:#bdcbe3;
      box-shadow:0 16px 36px rgba(22,39,75,.10);
    }
    .article-page .related-card img{
      width:100%;
      height:170px;
      object-fit:cover;
      background:#e9edf4;
    }
    .article-page .related-body{padding:17px}
    .article-page .related-body h3{
      display:-webkit-box;
      min-height:50px;
      margin:0 0 9px;
      overflow:hidden;
      color:#283349;
      font-size:17px;
      line-height:1.5;
      -webkit-box-orient:vertical;
      -webkit-line-clamp:2;
    }
    .article-page .related-body p{
      display:-webkit-box;
      min-height:46px;
      margin:0 0 12px;
      overflow:hidden;
      color:#6c768b;
      font-size:13px;
      line-height:1.7;
      -webkit-box-orient:vertical;
      -webkit-line-clamp:2;
    }
    .article-page .related-meta{
      display:flex;
      justify-content:space-between;
      gap:10px;
      color:#8a93a5;
      font-size:12px;
    }

    .footer{
      color:#d8e2f6;
      background:#071d45;
    }
    .footer .container{padding-top:54px}
    .footer-grid{
      display:grid;
      grid-template-columns:1.35fr .8fr .8fr .9fr;
      gap:42px;
      padding-bottom:42px;
    }
    .footer .logo{color:#fff}
    .footer .logo img{background:#fff}
    .footer h3{
      margin:0 0 17px;
      color:#fff;
      font-size:16px;
    }
    .footer p{
      margin:14px 0 0;
      color:#acb9d0;
      font-size:14px;
      line-height:1.8;
    }
    .footer-grid>div:not(.footer-brand)>a{
      display:block;
      margin:0 0 10px;
      color:#c7d3e8;
      font-size:14px;
    }
    .footer-grid>div:not(.footer-brand)>a:hover{color:#fff}
    .footer-bottom{
      min-height:70px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
      color:#94a5c2;
      border-top:1px solid rgba(255,255,255,.12);
      font-size:13px;
    }

    @media (max-width:1100px){
      .main-nav{display:none}
      .hamburger{display:flex}
      .header-btns{margin-left:auto}
      .article-page .article-layout{grid-template-columns:minmax(0,1fr) 270px}
      .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
    }
    @media (max-width:860px){
      .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))}
    }
    @media (max-width:640px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{
        padding:8px 0;
        align-items:flex-start;
        flex-direction:column;
        gap:2px;
      }
      .topbar-links{flex-wrap:wrap;gap:4px 14px}
      .header-inner{min-height:68px;gap:10px}
      .logo img{width:37px;height:37px;flex-basis:37px}
      .logo span{max-width:135px;font-size:14px}
      .member-btn{display:none}
      .open-btn{min-height:38px;padding:0 11px;font-size:13px}
      .hamburger{width:39px;height:39px}
      .article-page{padding:20px 0 52px}
      .article-page .breadcrumb{font-size:13px}
      .article-page .article-head{padding:28px 21px 22px}
      .article-page .article-title{font-size:29px}
      .article-page .article-meta{display:grid;gap:7px}
      .article-page .article-content{
        padding:27px 21px 30px;
        font-size:16px;
        line-height:1.9;
      }
      .article-page .article-content h2{font-size:23px}
      .article-page .risk-note{margin:0 21px 28px}
      .article-page .post-navigation{
        grid-template-columns:1fr;
        padding:0 21px 30px;
      }
      .article-page .post-navigation .next{text-align:left}
      .article-page .article-sidebar{grid-template-columns:1fr}
      .article-page .section-heading{
        align-items:flex-start;
        flex-direction:column;
        gap:4px;
      }
      .article-page .section-heading h2{font-size:24px}
      .article-page .related-grid{grid-template-columns:1fr}
      .article-page .related-card{display:grid;grid-template-columns:120px minmax(0,1fr)}
      .article-page .related-card img{height:100%;min-height:154px}
      .article-page .related-body{padding:14px}
      .article-page .related-body h3{font-size:15px}
      .article-page .related-body p{display:none}
      .article-page .related-meta{flex-direction:column;gap:2px}
      .footer .container{padding-top:40px}
      .footer-grid{grid-template-columns:1fr;gap:28px}
      .footer-bottom{
        padding:18px 0;
        align-items:flex-start;
        flex-direction:column;
        justify-content:center;
        gap:4px;
      }
    }