:root{--primary:#0B3D91;--ink:#16263e;--muted:#64748b;--line:#e3e9f1;--surface:#fff;--soft:#f4f7fb}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;background:var(--soft);color:var(--ink);font:16px/1.7 system-ui,-apple-system,"PingFang HK","Microsoft JhengHei",sans-serif}
    a{color:inherit;text-decoration:none}
    a:hover{color:var(--primary)}
    button{font:inherit;cursor:pointer}
    img{max-width:100%}
    .container{width:min(1200px,calc(100% - 40px));margin-inline:auto}
    .topbar{background:#102748;color:#dce8f8;font-size:12px}
    .topbar-inner,.topbar-contact,.header-inner,.header-btns{display:flex;align-items:center;gap:20px}
    .topbar-inner{justify-content:space-between;min-height:35px}
    .topbar a:hover{color:#fff}
    .header{position:relative;z-index:30;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{min-height:78px;justify-content:space-between}
    .logo{display:inline-flex;align-items:center;gap:10px;min-width:0;font-weight:800;color:var(--primary);white-space:nowrap}
    .logo img{width:38px;height:38px;object-fit:contain}
    .logo span{overflow:hidden;text-overflow:ellipsis}
    .main-nav{align-self:stretch}
    .nav-list{display:flex;align-items:stretch;gap:2px;height:100%;padding:0;margin:0;list-style:none}
    .nav-item{position:relative;display:flex;align-items:center}
    .nav-link{display:inline-flex;align-items:center;gap:5px;padding:14px 11px;font-size:14px;font-weight:650;white-space:nowrap}
    .has-arrow:after{content:"";width:6px;height:6px;border-right:1.5px solid;border-bottom:1.5px solid;transform:rotate(45deg) translateY(-2px)}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:0;display:none;background:#fff;border:1px solid var(--line);border-radius:0 0 16px 16px;box-shadow:0 18px 35px #10274820;z-index:40}
    .nav-item:hover>.dropdown-panel,.nav-item:focus-within>.dropdown-panel,.nav-item:hover>.mega-menu,.nav-item:focus-within>.mega-menu{display:block}
    .dropdown-panel{width:300px;padding:20px}
    .mega-menu{width:min(670px,90vw);padding:22px}
    .nav-item:nth-last-child(-n+3) .mega-menu{left:auto;right:0}
    .mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
    .mega-block{min-width:0}
    .mega-block h3,.panel-title{margin:0 0 12px;color:var(--primary);font-size:15px;font-weight:800}
    .mega-block p{margin:0 0 12px;color:var(--muted);font-size:13px}
    .panel-list{display:grid;gap:3px}
    .panel-list a,.mega-footer{display:block;padding:8px 10px;border-radius:8px;font-size:13px}
    .panel-list a:hover,.mega-footer:hover,.broker-mini:hover,.video-mini:hover,.tool-mini:hover,.product-mini:hover{background:#eef4ff}
    .mega-footer{margin-top:12px;color:var(--primary);font-weight:750;background:#f3f7fd}
    .broker-mini,.video-mini,.tool-mini,.product-mini{display:flex;align-items:center;gap:10px;padding:7px;border-radius:9px}
    .broker-mini img,.tool-mini img{width:38px;height:38px;object-fit:contain;border-radius:8px}
    .video-mini img,.product-mini img{width:58px;height:42px;object-fit:cover;border-radius:7px}
    .broker-mini span,.video-mini span,.tool-mini span,.product-mini span{min-width:0}
    .broker-mini strong,.video-mini strong,.tool-mini strong,.product-mini strong,.broker-mini small,.video-mini small,.tool-mini small,.product-mini small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
    .broker-mini strong,.video-mini strong,.tool-mini strong,.product-mini strong{font-size:13px}
    .broker-mini small,.video-mini small,.tool-mini small,.product-mini small{color:var(--muted);font-size:11px}
    .header-btns{gap:9px;white-space:nowrap}
    .member-link{color:var(--primary);font-size:13px;font-weight:700}
    .open-account{display:inline-block;padding:8px 15px;background:var(--primary);color:#fff;border-radius:8px;font-size:13px;font-weight:750}
    .open-account:hover{color:#fff;background:#082d6c}
    .hamburger{display:none;width:40px;height:40px;padding:9px;border:1px solid var(--line);border-radius:9px;background:#fff}
    .hamburger span{display:block;height:2px;margin:4px 0;background:var(--primary);transition:transform .2s,opacity .2s}
    .hamburger.active span:first-child{transform:translateY(6px) rotate(45deg)}
    .hamburger.active span:nth-child(2){opacity:0}
    .hamburger.active span:last-child{transform:translateY(-6px) rotate(-45deg)}
    .drawer-overlay{position:fixed;inset:0;z-index:80;background:#10274888;opacity:0;visibility:hidden;transition:.25s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;z-index:81;right:0;top:0;bottom:0;width:min(390px,90vw);overflow-y:auto;background:#fff;transform:translateX(105%);transition:transform .25s;box-shadow:-12px 0 35px #10274822}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:18px 20px;border-bottom:1px solid var(--line);color:var(--primary);font-weight:700}
    .drawer-head>a{padding:6px 13px;background:var(--primary);color:#fff;border-radius:7px}
    .drawer-close{border:0;background:transparent;color:var(--ink);font-size:27px;line-height:1}
    .drawer-menu{padding:12px 20px 35px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:13px 4px;border:0;border-bottom:1px solid var(--line);background:none;text-align:left;font-weight:700}
    .drawer-toggle:after{content:"+";float:right;color:var(--primary)}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:none;padding:5px 0 10px 14px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:9px 5px;color:var(--muted);font-size:14px}
    .footer{margin-top:70px;background:#102748;color:#d3dfef}
    .footer-main{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:38px;padding-block:52px}
    .footer h3{margin:0 0 16px;color:#fff;font-size:16px}
    .footer p{margin:0 0 10px;font-size:13px}
    .footer-links{display:grid;gap:9px}
    .footer-links a,.footer-contact a{font-size:13px}
    .footer a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:16px;padding-block:17px;border-top:1px solid #ffffff29;font-size:12px}
    .tool-detail-page{padding-top:38px}
    .tool-detail-page .breadcrumbs{display:flex;flex-wrap:wrap;gap:9px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:22px}
    .tool-detail-page .breadcrumbs a{color:var(--primary)}
    .tool-detail-page .intro{padding:32px;background:linear-gradient(135deg,#e9f0fc,#fff 72%);border:1px solid #dce7f8;border-radius:20px}
    .tool-detail-page .eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 13px;color:var(--primary);font-size:12px;font-weight:800;letter-spacing:.08em}
    .tool-detail-page .eyebrow:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--primary)}
    .tool-detail-page .intro-heading{display:flex;align-items:center;gap:18px}
    .tool-detail-page .detail-icon{width:72px;height:72px;flex:none;object-fit:contain;padding:12px;background:white;border:1px solid var(--line);border-radius:17px}
    .tool-detail-page h1{margin:0;font-size:clamp(28px,4vw,44px);line-height:1.2}
    .tool-detail-page .lead{max-width:760px;margin:20px 0 0;color:#455772;font-size:17px}
    .tool-detail-page .meta{display:flex;flex-wrap:wrap;gap:9px 23px;margin-top:22px;color:var(--muted);font-size:13px}
    .tool-detail-page .detail-grid{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:26px;align-items:start;margin-top:27px}
    .tool-detail-page .content,.tool-detail-page .sidebar{min-width:0}
    .tool-detail-page .content,.tool-detail-page .related{padding:30px;background:var(--surface);border:1px solid var(--line);border-radius:17px;box-shadow:0 8px 30px #183b6508}
    .tool-detail-page .content h2,.tool-detail-page .related h2{margin:0 0 17px;font-size:21px}
    .tool-detail-page .content h2:before{content:"";display:inline-block;width:4px;height:18px;margin-right:10px;border-radius:4px;background:var(--primary);vertical-align:-2px}
    .tool-detail-page .tool-body{min-width:0;max-width:100%;overflow-x:auto;overflow-wrap:anywhere}
    .tool-detail-page .tool-body img,.tool-detail-page .tool-body video,.tool-detail-page .tool-body iframe,.tool-detail-page .tool-body table{max-width:100%}
    .tool-detail-page .tool-body pre{max-width:100%;overflow-x:auto}
    .tool-detail-page .tool-body a{color:var(--primary);text-decoration:underline}
    .tool-detail-page .tool-body h2,.tool-detail-page .tool-body h3{line-height:1.35}
    .tool-detail-page .tool-body p{margin:0 0 1em}
    .tool-detail-page .related{padding:22px}
    .tool-detail-page .related h2{font-size:18px}
    .tool-detail-page .related-item{display:flex;gap:11px;padding:14px 0;border-top:1px solid var(--line)}
    .tool-detail-page .related-item img{width:42px;height:42px;flex:none;object-fit:contain;border:1px solid var(--line);border-radius:9px;padding:5px}
    .tool-detail-page .related-item strong{display:block;font-size:14px;line-height:1.4}
    .tool-detail-page .related-item small{display:-webkit-box;overflow:hidden;-webkit-box-orient:vertical;-webkit-line-clamp:2;margin-top:4px;color:var(--muted);font-size:12px;line-height:1.5}
    .tool-detail-page .aside-link{display:block;margin-top:18px;padding:10px;text-align:center;background:#edf3fd;color:var(--primary);border-radius:9px;font-size:14px;font-weight:750}
    .tool-detail-page .notice{margin-top:18px;padding:18px;border:1px solid #dce7f8;border-radius:13px;color:#4b5e78;background:#f0f5fd;font-size:13px}
    @media(max-width:1080px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-inner{min-height:68px}
    }
    @media(max-width:760px){
      .container{width:min(100% - 28px,1200px)}
      .topbar-inner{align-items:flex-start;gap:3px;flex-direction:column;padding-block:7px}
      .topbar-contact{gap:12px;flex-wrap:wrap}
      .header-btns .open-account{display:none}
      .tool-detail-page{padding-top:24px}
      .tool-detail-page .intro{padding:23px}
      .tool-detail-page .detail-grid{grid-template-columns:1fr}
      .tool-detail-page .content{padding:22px}
      .footer-main{grid-template-columns:repeat(2,minmax(0,1fr));gap:30px;padding-block:40px}
    }
    @media(max-width:480px){
      .logo span{max-width:115px}
      .member-link{font-size:12px}
      .tool-detail-page .intro-heading{align-items:flex-start;gap:12px}
      .tool-detail-page .detail-icon{width:55px;height:55px;padding:8px}
      .tool-detail-page .lead{font-size:15px}
      .footer-main{grid-template-columns:1fr}
      .footer-bottom{flex-direction:column}
    }