:root{
      --primary:#0B3D91;
      --ink:#111827;
      --muted:#667085;
      --line:#d9dee8;
      --paper:#f7f9fc;
      --white:#fff;
      --accent:#f4b942;
      --shadow:0 16px 45px rgba(11,61,145,.10);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--paper);color:var(--ink);font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;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:0 auto}

    .topbar{background:#0a1730;color:#cbd5e1;font-size:13px}
    .topbar .container{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar a{color:#e7edf8;margin-left:18px}
    .topbar a:hover{color:var(--accent)}

    .header{position:relative;z-index:20;background:var(--white);border-bottom:1px solid var(--line)}
    .header-inner{min-height:76px;display:flex;align-items:center;gap:30px}
    .logo{display:flex;align-items:center;gap:10px;min-width:190px;color:var(--primary);font-size:20px;font-weight:800;white-space:nowrap}
    .logo img{width:36px;height:36px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:center;justify-content:center;gap:4px;list-style:none;padding:0;margin:0}
    .nav-item{position:relative}
    .nav-link{display:block;padding:25px 14px;font-size:15px;font-weight:650;white-space:nowrap}
    .nav-link:hover,.nav-link:focus{color:var(--primary)}
    .has-arrow:after{content:"";display:inline-block;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:calc(100% - 1px);left:50%;transform:translateX(-50%) translateY(8px);width:340px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:0 0 16px 16px;box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:.2s ease}
    .mega-menu{width:680px;display:grid;grid-template-columns:1.25fr .75fr;gap:24px}
    .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;transform:translateX(-50%) translateY(0)}
    .panel-title{margin-bottom:12px;color:var(--primary);font-size:13px;font-weight:800;letter-spacing:.08em}
    .panel-link{display:block;padding:8px 0;border-bottom:1px solid #edf0f5;font-size:14px}
    .panel-link:hover,.mega-card:hover{color:var(--primary)}
    .mega-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
    .mega-card{display:block;padding:13px;border:1px solid var(--line);border-radius:10px;background:#fbfcfe}
    .mega-card img{width:24px;height:24px;object-fit:contain;margin-bottom:6px}
    .mega-card strong,.mega-card small{display:block}
    .mega-card strong{font-size:14px}
    .mega-card small{margin-top:3px;color:var(--muted);font-size:12px;line-height:1.5}
    .mega-section p{margin:0 0 18px;color:var(--muted);font-size:14px}
    .mega-footer{display:inline-block;margin-top:14px;color:var(--primary);font-size:13px;font-weight:750}
    .mega-footer:after{content:" →";font-size:17px}
    .header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}
    .member-btn{font-size:14px;color:var(--primary)}
    .open-btn{padding:9px 15px;border-radius:8px;background:var(--primary);color:#fff;font-size:14px;font-weight:700}
    .hamburger{display:none;border:0;background:transparent;padding:8px;cursor:pointer}
    .hamburger span{display:block;width:24px;height:2px;margin:5px 0;background:var(--ink);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{position:fixed;inset:0;background:rgba(6,18,38,.5);opacity:0;visibility:hidden;transition:.25s;z-index:30}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:0;width:min(390px,88vw);height:100vh;overflow:auto;background:#fff;transform:translateX(100%);transition:.25s;z-index:31;box-shadow:-15px 0 40px rgba(0,0,0,.16)}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:16px;padding:20px;border-bottom:1px solid var(--line);font-weight:750}
    .drawer-head>a{margin-left:auto;color:var(--primary)}
    .drawer-close{border:0;background:transparent;font-size:29px;line-height:1;cursor:pointer}
    .drawer-menu{padding:12px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 0;border:0;border-bottom:1px solid #edf0f5;background:transparent;text-align:left;font-size:15px;cursor:pointer}
    .drawer-toggle:after{content:"＋";float:right;color:var(--muted)}
    .drawer-toggle.active:after{content:"－"}
    .drawer-submenu{display:none;padding:5px 0 8px 14px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:14px}

    .article-page{padding:54px 0 80px}
    .article-layout{display:grid;grid-template-columns:minmax(0,780px) 280px;gap:34px;align-items:start}
    .article-main,.article-side{background:var(--white);border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 28px rgba(16,24,40,.04)}
    .article-main{padding:42px 48px}
    .article-kicker{display:inline-flex;padding:5px 11px;border-radius:999px;background:#e9f0ff;color:var(--primary);font-size:13px;font-weight:750}
    .article-title{margin:18px 0 12px;font-size:clamp(30px,4vw,48px);line-height:1.2;letter-spacing:-.035em}
    .article-meta{display:flex;flex-wrap:wrap;gap:9px 20px;padding-bottom:25px;border-bottom:1px solid var(--line);color:var(--muted);font-size:13px}
    .article-cover{width:100%;max-height:430px;object-fit:cover;margin:28px 0;border-radius:13px;background:#eef2f7}
    .article-content{min-width:0;max-width:100%;overflow-x:auto;font-size:16px;color:#344054}
    .article-content h2{margin:34px 0 12px;color:var(--ink);font-size:25px}
    .article-content h3{margin:26px 0 10px;color:var(--ink);font-size:20px}
    .article-content p{margin:0 0 18px}
    .article-content img,.article-content table{max-width:100%;height:auto}
    .article-content blockquote{margin:24px 0;padding:16px 20px;border-left:4px solid var(--primary);background:#f2f6ff;color:#43526b}
    .article-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:30px;padding-top:22px;border-top:1px solid var(--line)}
    .article-tags a{padding:5px 10px;border:1px solid #c8d5ec;border-radius:999px;color:var(--primary);font-size:13px}
    .article-side{padding:24px;position:sticky;top:20px}
    .side-title{margin:0 0 16px;font-size:18px}
    .side-note{margin:0 0 20px;padding:14px;background:#f4f7fc;color:var(--muted);font-size:13px;border-radius:10px}
    .related-list{list-style:none;margin:0;padding:0}
    .related-list li{padding:13px 0;border-bottom:1px solid #edf0f5}
    .related-list a{display:block;font-size:14px;font-weight:650;line-height:1.55}
    .related-list a:hover{color:var(--primary)}
    .article-pager{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:28px}
    .pager-item{padding:15px;border:1px solid var(--line);border-radius:11px;background:#fbfcfe}
    .pager-item small{display:block;margin-bottom:5px;color:var(--muted)}
    .pager-item strong{display:block;font-size:14px;line-height:1.5}
    .pager-item.next{text-align:right}
    .article-cta{margin-top:30px;padding:22px;border-radius:14px;background:var(--primary);color:#fff}
    .article-cta strong{display:block;margin-bottom:5px;font-size:19px}
    .article-cta p{margin:0 0 13px;color:#dce8ff;font-size:14px}
    .article-cta a{display:inline-block;padding:8px 14px;border-radius:7px;background:var(--accent);color:#172033;font-weight:750;font-size:13px}

    .footer{padding:52px 0 20px;background:#0a1730;color:#cbd5e1}
    .footer-grid{display:grid;grid-template-columns:1.35fr 1fr 1fr 1fr;gap:35px}
    .footer-brand{display:block;margin-bottom:12px;color:#fff;font-size:21px;font-weight:800}
    .footer p{margin:7px 0;color:#9eacc1;font-size:13px}
    .footer h3{margin:0 0 13px;color:#fff;font-size:15px}
    .footer-grid>div>a:not(.footer-brand){display:block;margin:6px 0;color:#aebbd0;font-size:13px}
    .footer a:hover{color:#fff}
    .footer-bottom{margin-top:35px;padding-top:18px;border-top:1px solid #263653;color:#8e9db4;font-size:12px}

    @media(max-width:1050px){
      .main-nav{display:none}
      .header-btns .member-btn{display:none}
      .hamburger{display:block}
      .article-layout{grid-template-columns:minmax(0,1fr) 250px}
    }
    @media(max-width:720px){
      .container{width:min(100% - 28px,560px)}
      .topbar .container{padding:8px 0;display:block;font-size:12px}
      .topbar .container>span{display:block}
      .topbar a:first-child{margin-left:0}
      .header-inner{min-height:66px;gap:10px}
      .logo{min-width:0;font-size:17px}
      .logo img{width:30px;height:30px}
      .open-btn{padding:7px 10px;font-size:12px}
      .article-page{padding:28px 0 55px}
      .article-layout{display:block}
      .article-main{padding:26px 20px}
      .article-side{position:static;margin-top:18px}
      .article-title{font-size:31px}
      .article-meta{display:block}
      .article-meta span{display:inline-block;margin:3px 13px 3px 0}
      .article-pager{grid-template-columns:1fr}
      .pager-item.next{text-align:left}
      .footer-grid{grid-template-columns:1fr 1fr;gap:25px 18px}
    }