:root{
      --theme:#0B3D91;
      --ink:#172033;
      --muted:#6b7280;
      --line:#e5eaf1;
      --soft:#f4f7fb;
      --white:#fff;
      --shadow:0 18px 50px rgba(20,35,65,.10);
      --radius:16px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#f7f9fc;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang HK","Microsoft JhengHei",sans-serif;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button{font:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:0 auto}

    .topbar{background:#101827;color:#cbd5e1;font-size:13px}
    .topbar-inner{min-height:36px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar-links{display:flex;gap:20px}
    .topbar a:hover{color:#fff}

    .header{position:relative;z-index:30;background:#fff;border-bottom:1px solid var(--line)}
    .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(--ink);white-space:nowrap}
    .logo img{width:34px;height:34px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:center;justify-content:center;gap:4px;list-style:none;margin:0;padding:0}
    .nav-item{position:relative}
    .nav-link{display:block;padding:25px 13px;font-size:14px;font-weight:650;color:#344054;white-space:nowrap}
    .nav-link:hover,.nav-link:focus{color:var(--theme)}
    .has-arrow:after{content:"⌄";font-size:12px;margin-left:6px;color:#98a2b3}
    .header-btns{display:flex;align-items:center;gap:12px}
    .member-link{font-size:13px;color:var(--theme);font-weight:700}
    .open-account{background:var(--theme);color:#fff;padding:9px 16px;border-radius:8px;font-size:13px;font-weight:700}
    .open-account:hover{background:#082d6c}
    .hamburger{display:none;border:0;background:transparent;padding:8px;cursor:pointer}
    .hamburger span{display:block;width:23px;height:2px;background:var(--ink);margin:5px 0;transition:.2s}

    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% - 1px);left:50%;transform:translateX(-50%);width:280px;padding:20px;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:.2s;z-index:40}
    .mega-menu{width:650px}
    .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}
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
    .mega-title{margin:0 0 12px;color:var(--theme);font-size:13px;font-weight:800}
    .dropdown-list{display:grid;gap:8px}
    .dropdown-list a{padding:7px 0;color:#475467;font-size:13px;border-bottom:1px solid #f0f2f5}
    .dropdown-list a:hover{color:var(--theme)}
    .mega-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
    .mega-card{display:flex;gap:10px;padding:10px;border:1px solid #edf0f5;border-radius:10px;background:#fbfcfe}
    .mega-card:hover{border-color:#b8c9e8;background:#f5f8fd}
    .mega-card img{width:34px;height:34px;object-fit:contain;border-radius:7px;flex:0 0 34px}
    .mega-card span{min-width:0}
    .mega-card strong,.mega-card small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
    .mega-card strong{font-size:12px}
    .mega-card small{font-size:10px;color:var(--muted);line-height:1.5}
    .mega-footer{display:block;text-align:right;margin-top:16px;color:var(--theme);font-size:12px;font-weight:700}

    .drawer-overlay{display:none;position:fixed;inset:0;background:rgba(15,23,42,.5);z-index:60}
    .drawer-overlay.open{display:block}
    .mobile-drawer{position:fixed;top:0;right:-360px;width:min(360px,88vw);height:100vh;background:#fff;z-index:70;transition:right .25s;overflow:auto;box-shadow:-10px 0 30px rgba(0,0,0,.15)}
    .mobile-drawer.open{right:0}
    .drawer-head{display:flex;align-items:center;gap:14px;padding:18px 20px;border-bottom:1px solid var(--line);font-weight:750}
    .drawer-head>a{margin-left:auto;color:var(--theme);font-size:13px}
    .drawer-close{border:0;background:transparent;font-size:28px;line-height:1;color:#667085;cursor:pointer}
    .drawer-menu{padding:10px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;border:0;border-bottom:1px solid #eef1f5;background:transparent;text-align:left;color:#263247;font-weight:650;cursor:pointer}
    .drawer-toggle:after{content:"＋";float:right;color:#98a2b3}
    .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:#667085;font-size:13px}

    .article-page{padding:54px 0 78px}
    .article-shell{width:min(940px,100%);margin:0 auto}
    .article-crumbs{display:flex;flex-wrap:wrap;gap:8px;color:#8290a5;font-size:13px;margin-bottom:18px}
    .article-crumbs a{color:var(--theme)}
    .article-header{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:38px 44px 30px;box-shadow:0 10px 35px rgba(32,55,90,.05)}
    .article-kicker{display:inline-flex;padding:5px 11px;background:#e9f0fc;color:var(--theme);border-radius:999px;font-size:12px;font-weight:750}
    .article-title{font-size:clamp(30px,5vw,48px);line-height:1.25;letter-spacing:-.02em;margin:18px 0 15px;color:#111b2e}
    .article-meta{display:flex;flex-wrap:wrap;gap:18px;color:#7b8798;font-size:13px}
    .article-content{margin-top:22px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:42px 44px;box-shadow:0 10px 35px rgba(32,55,90,.05);min-width:0;max-width:100%;overflow-x:auto}
    .article-content>*{max-width:100%}
    .article-content h2{font-size:25px;line-height:1.35;margin:30px 0 14px;color:#16233b}
    .article-content h3{font-size:20px;margin:24px 0 10px;color:#20365c}
    .article-content p{margin:0 0 18px;color:#3e4b60}
    .article-content ul,.article-content ol{padding-left:25px;color:#3e4b60}
    .article-content blockquote{margin:24px 0;padding:16px 20px;border-left:4px solid var(--theme);background:#f3f7fd;color:#40516b}
    .article-content table{width:100%;border-collapse:collapse;margin:22px 0}
    .article-content th,.article-content td{padding:10px;border:1px solid var(--line);text-align:left}
    .article-content th{background:#f4f7fb}
    .article-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px;padding-top:20px;border-top:1px solid var(--line)}
    .article-tags a{padding:5px 11px;border:1px solid #d9e2f0;border-radius:999px;color:var(--theme);font-size:12px}
    .article-pager{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:20px}
    .pager-card{display:block;padding:17px 20px;background:#fff;border:1px solid var(--line);border-radius:12px}
    .pager-card.next{text-align:right}
    .pager-label{display:block;color:#98a2b3;font-size:12px;margin-bottom:5px}
    .pager-title{font-weight:700;color:#31425e}
    .like-articles{margin-top:35px}
    .like-articles h2{font-size:22px}
    .like-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
    .like-card{display:block;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden}
    .like-card img{width:100%;height:130px;object-fit:cover;background:#e8edf5}
    .like-card div{padding:13px}
    .like-card strong{display:block;font-size:14px;line-height:1.45}
    .like-card small{display:block;color:#8995a7;margin-top:6px;font-size:11px}

    .footer{background:#101827;color:#b8c2d1;padding:52px 0 20px}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
    .footer .logo{color:#fff}
    .footer-brand p{font-size:13px;max-width:280px;color:#9eabbc}
    .footer-col h3{color:#fff;font-size:14px;margin:4px 0 14px}
    .footer-links{list-style:none;margin:0;padding:0;display:grid;gap:7px}
    .footer-links a,.footer-col p{font-size:13px;color:#aeb9c9;margin:0}
    .footer-links a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid #293548;margin-top:34px;padding-top:18px;font-size:12px;color:#8492a5}

    @media(max-width:980px){
      .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:680px){
      .container{width:min(100% - 28px,1180px)}
      .topbar-inner{padding:7px 0;align-items:flex-start}
      .topbar-links{flex-direction:column;gap:0;text-align:right}
      .header-inner{min-height:68px}
      .article-page{padding:30px 0 55px}
      .article-header,.article-content{padding:25px 20px}
      .article-title{font-size:31px}
      .article-content{font-size:15px}
      .article-pager,.like-grid{grid-template-columns:1fr}
      .pager-card.next{text-align:left}
      .footer-grid{grid-template-columns:1fr;gap:25px}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin-top:5px}
    }