:root{--blue:#0B3D91;--ink:#10233f;--ice:#eef7fc;--line:#d8e7f3;--muted:#60738a;--white:#fff;--shadow:0 18px 48px rgba(11,61,145,.12)}
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#f7fbfe;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.7}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    .container{width:min(1180px,calc(100% - 40px));margin:auto}
    .topbar{background:#092c68;color:#dcecff;font-size:13px}
    .topbar .container{min-height:36px;display:flex;align-items:center;justify-content:space-between}
    .topbar-links{display:flex;gap:20px}
    .topbar a{color:#dcecff}
    .header{height:78px;background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:20}
    .header-inner{height:100%;display:flex;align-items:center;gap:32px}
    .logo{display:flex;align-items:center;gap:10px;min-width:205px;font-size:20px;font-weight:800;color:var(--blue)}
    .logo img{width:38px;height:38px;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 14px;color:#243955;font-size:15px;white-space:nowrap}
    .nav-link:hover,.nav-link:focus-within{color:var(--blue)}
    .has-arrow:after{content:"⌄";font-size:12px;margin-left:6px}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);visibility:hidden;opacity:0;transition:.2s;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);border-radius:0 0 14px 14px;z-index:30}
    .dropdown-panel{width:250px;padding:12px}
    .dropdown-panel a{display:block;padding:9px 11px;border-radius:8px;font-size:14px}
    .dropdown-panel a:hover{background:var(--ice);color:var(--blue)}
    .mega-menu{width:min(760px,calc(100vw - 30px));padding:24px}
    .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}
    .mega-menu:before{content:"";position:absolute;left:0;right:0;top:-12px;height:14px}
    .mega-inner{position:relative}
    .mega-title{font-size:14px;font-weight:800;color:var(--blue);margin-bottom:14px}
    .broker-grid,.video-grid,.tool-grid,.product-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
    .mega-card{display:flex;gap:10px;padding:11px;border:1px solid var(--line);border-radius:10px;background:#fbfdff}
    .mega-card:hover{border-color:#8db5dc;background:var(--ice)}
    .mega-card img{width:38px;height:38px;object-fit:contain;border-radius:7px;flex:none}
    .mega-card strong,.mega-card small{display:block}
    .mega-card strong{font-size:13px;color:var(--ink)}
    .mega-card small{font-size:11px;line-height:1.5;color:var(--muted)}
    .video-play{width:30px;height:30px;display:grid;place-items:center;border-radius:50%;background:var(--blue);color:#fff;flex:none}
    .mega-footer{display:block;margin-top:18px;color:var(--blue);font-size:13px;font-weight:700}
    .header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}
    .member-link{font-size:13px;color:var(--blue)}
    .open-account{padding:8px 15px;border-radius:7px;background:var(--blue);color:#fff;font-size:13px}
    .hamburger{display:none;border:0;background:none;padding:7px;cursor:pointer}
    .hamburger span{display:block;width:23px;height:2px;margin:5px;background:var(--blue);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{display:none;position:fixed;inset:0;background:rgba(4,22,49,.45);z-index:40}
    .drawer-overlay.open{display:block}
    .mobile-drawer{position:fixed;right:0;top:0;bottom:0;width:min(370px,88vw);background:#fff;z-index:50;transform:translateX(100%);transition:.25s;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:12px;padding:20px;border-bottom:1px solid var(--line);font-weight:700;color:var(--blue)}
    .drawer-head span{flex:1}
    .drawer-head a{padding:6px 11px;background:var(--blue);color:#fff;border-radius:5px;font-size:13px}
    .drawer-close{border:0;background:none;font-size:28px;color:var(--muted);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 #edf3f8;background:none;text-align:left;color:var(--ink);font:inherit;cursor:pointer}
    .drawer-toggle:after{content:"＋";float:right;color:var(--blue)}
    .drawer-toggle.active:after{content:"－"}
    .drawer-submenu{display:none;padding:4px 0 8px 15px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:14px}
    .footer{margin-top:70px;background:#092c68;color:#dcecff;padding:48px 0 20px}
    .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:35px}
    .footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-size:19px;font-weight:800;margin-bottom:14px}
    .footer-brand img{width:34px;height:34px;object-fit:contain}
    .footer p{margin:8px 0;color:#b9d0e8;font-size:13px}
    .footer h3{font-size:15px;color:#fff;margin:0 0 13px}
    .footer-grid a{display:block;margin:7px 0;color:#b9d0e8;font-size:13px}
    .footer-grid a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;border-top:1px solid rgba(255,255,255,.18);margin-top:35px;padding-top:18px;color:#9db9d5;font-size:12px}
    .tool-detail-page{padding:56px 0 10px}
    .tool-detail-page .breadcrumb{font-size:13px;color:var(--muted);margin-bottom:22px}
    .tool-detail-page .breadcrumb a{color:var(--blue)}
    .tool-layout{display:grid;grid-template-columns:minmax(0,1fr) 310px;gap:28px;align-items:start}
    .tool-main-card,.tool-side-card{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 12px 32px rgba(11,61,145,.07)}
    .tool-main-card{padding:34px}
    .tool-heading{display:flex;gap:20px;align-items:center;padding-bottom:25px;border-bottom:1px solid var(--line)}
    .tool-heading img{width:76px;height:76px;object-fit:contain;border-radius:16px;background:var(--ice);padding:12px}
    .tool-heading h1{margin:0 0 6px;font-size:32px;line-height:1.25;color:var(--ink)}
    .tool-heading p{margin:0;color:var(--muted)}
    .tool-meta{display:flex;flex-wrap:wrap;gap:18px;margin:20px 0;padding:14px 17px;background:var(--ice);border-radius:10px;color:#49627e;font-size:13px}
    .tool-body{min-width:0;max-width:100%;overflow-x:auto;color:#344b66}
    .tool-body h2,.tool-body h3{color:var(--blue);line-height:1.35}
    .tool-body img,.tool-body table{max-width:100%}
    .tool-actions{display:flex;gap:12px;margin-top:28px}
    .tool-actions a{padding:10px 18px;border-radius:8px;background:var(--blue);color:#fff;font-size:14px}
    .tool-actions a.secondary{background:#e7f1fa;color:var(--blue)}
    .tool-side-card{padding:22px;position:sticky;top:20px}
    .tool-side-card h2{font-size:18px;margin:0 0 16px;color:var(--ink)}
    .related-tool{display:flex;gap:11px;padding:13px 0;border-top:1px solid #edf3f8}
    .related-tool img{width:42px;height:42px;padding:6px;background:var(--ice);border-radius:8px;object-fit:contain}
    .related-tool strong,.related-tool small{display:block}
    .related-tool strong{font-size:14px;color:var(--blue)}
    .related-tool small{font-size:12px;color:var(--muted);line-height:1.5}
    @media(max-width:980px){
      .main-nav{display:none}
      .hamburger{display:block}
      .header-inner{justify-content:space-between}
      .header-btns{margin-left:auto}
      .tool-layout{grid-template-columns:1fr}
      .tool-side-card{position:static}
    }
    @media(max-width:640px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{padding:7px 0;display:block}
      .topbar-links{gap:12px;margin-top:2px;flex-wrap:wrap}
      .header{height:68px}
      .logo{min-width:0;font-size:17px}
      .logo img{width:32px;height:32px}
      .member-link{display:none}
      .open-account{padding:7px 10px}
      .tool-detail-page{padding:32px 0 0}
      .tool-main-card{padding:22px 17px}
      .tool-heading{align-items:flex-start;gap:13px}
      .tool-heading img{width:58px;height:58px;padding:8px}
      .tool-heading h1{font-size:24px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:24px}
      .footer-grid>div:first-child{grid-column:1/-1}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin:5px 0}
    }