:root{
      --primary:#0B3D91;
      --primary-dark:#082b68;
      --ice:#eef7ff;
      --silver:#f6f9fc;
      --ink:#10233f;
      --muted:#66758c;
      --line:#dce6f1;
      --white:#fff;
      --shadow:0 16px 42px rgba(11,61,145,.12);
      --radius:16px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#f7fbff;font-family:"Microsoft YaHei","PingFang SC",Arial,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:#071b38;color:#d9e8fb;font-size:13px}
    .topbar-inner{min-height:36px;display:flex;align-items:center;justify-content:space-between}
    .topbar-contact{display:flex;gap:22px}
    .topbar a{color:#d9e8fb}
    .topbar a:hover{color:#fff}

    .header{position:relative;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);box-shadow:0 5px 18px rgba(16,35,63,.04)}
    .header-inner{min-height:76px;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:10px;white-space:nowrap;color:var(--primary);font-size:20px;font-weight:800}
    .logo img{width:38px;height:38px;object-fit:contain}
    .main-nav{margin-left:auto}
    .nav-list{display:flex;align-items:stretch;gap:4px;list-style:none;margin:0;padding:0}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:6px;padding:26px 13px;color:#263b58;font-size:14px;font-weight:600;white-space:nowrap}
    .nav-link:hover,.nav-item:focus-within>.nav-link{color:var(--primary)}
    .has-arrow:after{content:"";width:6px;height:6px;border-right:1px solid currentColor;border-bottom:1px solid currentColor;transform:rotate(45deg) translateY(-2px)}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% - 1px);left:50%;transform:translateX(-50%);width:330px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:0 0 14px 14px;box-shadow:var(--shadow);opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease}
    .mega-menu{width:720px}
    .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;pointer-events:auto}
    .dropdown-panel:before,.mega-menu:before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
    .panel-title{margin:0 0 13px;color:var(--primary);font-size:15px}
    .panel-list{display:grid;gap:8px;margin:0}
    .panel-list a{display:block;color:#40546d;font-size:13px}
    .panel-list a:hover{color:var(--primary)}
    .mega-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
    .mega-column{min-width:0}
    .mega-card{display:flex;align-items:center;gap:10px;padding:8px 0;border-bottom:1px solid #edf2f7}
    .mega-card:last-child{border-bottom:0}
    .mega-card img{width:34px;height:34px;object-fit:contain;border-radius:8px;background:var(--ice)}
    .mega-card span{display:grid;gap:1px;min-width:0}
    .mega-card strong{font-size:13px;color:#203854;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .mega-card small{font-size:11px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .mega-footer{display:block;margin:18px -22px -22px;padding:12px 22px;color:var(--primary);background:var(--ice);font-size:13px;font-weight:700}
    .header-btns{display:flex;align-items:center;gap:9px}
    .member-btn,.open-account{padding:8px 13px;border-radius:8px;font-size:13px;font-weight:700}
    .member-btn{color:var(--primary);border:1px solid #bcd0eb}
    .open-account{color:#fff;background:var(--primary)}
    .hamburger{display:none;width:40px;height:38px;padding:8px;border:1px solid var(--line);border-radius:8px;background:#fff;cursor:pointer}
    .hamburger span{display:block;width:21px;height:2px;margin:4px auto;background:var(--primary);transition:.2s}
    .hamburger.active span:nth-child(1){transform:translateY(6px) rotate(45deg)}
    .hamburger.active span:nth-child(2){opacity:0}
    .hamburger.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

    .drawer-overlay{position:fixed;inset:0;background:rgba(3,18,39,.46);opacity:0;visibility:hidden;z-index:50;transition:.2s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;z-index:51;top:0;right:0;width:min(390px,88vw);height:100vh;overflow:auto;background:#fff;transform:translateX(100%);transition:.28s ease;box-shadow:-12px 0 35px rgba(4,24,54,.2)}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:12px;padding:20px;border-bottom:1px solid var(--line);color:var(--primary);font-weight:700}
    .drawer-head span{margin-right:auto}
    .drawer-head a{padding:5px 12px;border-radius:6px;background:var(--primary);color:#fff;font-size:13px}
    .drawer-close{border:0;background:none;color:#6b7d94;font-size:27px;line-height:1;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 #edf2f7;background:none;color:var(--ink);text-align:left;font-size:15px;cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--primary);font-size:20px}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:grid;gap:0;max-height:0;overflow:hidden;padding-left:15px;transition:max-height .25s ease}
    .drawer-submenu.open{max-height:900px}
    .drawer-submenu a{padding:9px 0;color:var(--muted);font-size:13px;border-bottom:1px solid #f0f4f8}

    .tools-page{padding:58px 0 80px}
    .page-heading{text-align:center;max-width:720px;margin:0 auto 38px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:12px;color:var(--primary);font-size:13px;font-weight:800;letter-spacing:2px}
    .eyebrow:before{content:"";width:24px;height:2px;background:#72b5ee}
    .page-heading h1{margin:0 0 12px;color:var(--ink);font-size:clamp(30px,4vw,48px);line-height:1.2}
    .page-heading p{margin:0;color:var(--muted);font-size:15px}
    .tool-toolbar{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:22px;padding:16px 20px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 8px 25px rgba(11,61,145,.05)}
    .tool-toolbar strong{color:var(--ink);font-size:16px}
    .tool-toolbar span{color:var(--muted);font-size:13px}
    .tool-filter{display:flex;gap:8px;flex-wrap:wrap}
    .tool-filter a{padding:6px 12px;border:1px solid #cbd9e9;border-radius:30px;color:var(--primary);font-size:12px}
    .tool-filter a:first-child,.tool-filter a:hover{background:var(--primary);border-color:var(--primary);color:#fff}
    .tools-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
    .tool-card{display:flex;flex-direction:column;min-height:250px;padding:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 8px 26px rgba(11,61,145,.06);transition:.2s}
    .tool-card:hover{transform:translateY(-5px);border-color:#a9c5e7;box-shadow:var(--shadow)}
    .tool-icon{display:flex;align-items:center;justify-content:center;width:54px;height:54px;margin-bottom:17px;border-radius:14px;background:linear-gradient(145deg,#eaf5ff,#d8eaff);color:var(--primary);font-size:24px;font-weight:800;overflow:hidden}
    .tool-icon img{width:34px;height:34px;object-fit:contain}
    .tool-card h2{margin:0 0 9px;color:var(--ink);font-size:18px}
    .tool-card p{display:-webkit-box;overflow:hidden;margin:0;color:var(--muted);font-size:13px;line-height:1.75;-webkit-box-orient:vertical;-webkit-line-clamp:3}
    .tool-card-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:20px}
    .tool-card-foot span{color:#8a99aa;font-size:12px}
    .tool-card-foot a{color:var(--primary);font-size:13px;font-weight:700}
    .tool-card-foot a:after{content:" →";transition:.2s}
    .tool-card:hover .tool-card-foot a:after{padding-left:4px}
    .tool-note{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:40px}
    .note-item{padding:20px;border-radius:14px;background:#eaf4ff;border:1px solid #d3e6fa}
    .note-item strong{display:block;margin-bottom:6px;color:var(--primary)}
    .note-item p{margin:0;color:#60738b;font-size:13px}
    .pagination{display:flex;justify-content:center;gap:8px;margin-top:38px}
    .pagination a{min-width:34px;padding:6px 11px;text-align:center;color:var(--primary);background:#fff;border:1px solid var(--line);border-radius:7px;font-size:13px}
    .pagination a.active,.pagination a:hover{color:#fff;background:var(--primary);border-color:var(--primary)}

    .footer{padding:52px 0 0;background:#081b35;color:#c7d8ec}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:35px;padding-bottom:38px}
    .footer h3{margin:0 0 15px;color:#fff;font-size:15px}
    .footer-brand strong{display:block;margin-bottom:12px;color:#fff;font-size:21px}
    .footer p{margin:6px 0;color:#9db2cc;font-size:13px}
    .footer-grid>div:not(.footer-brand) a{display:block;margin:7px 0;color:#a9bdd4;font-size:13px}
    .footer-grid a:hover{color:#fff}
    .footer-bottom{padding:20px 0;border-top:1px solid rgba(255,255,255,.12);color:#8da4c0;font-size:12px}

    @media(max-width:1050px){
      .main-nav{display:none}
      .hamburger{display:block}
      .tools-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:700px){
      .container{width:min(100% - 28px,1180px)}
      .topbar-inner{align-items:flex-start;flex-direction:column;gap:2px;padding:7px 0}
      .topbar-contact{gap:12px;flex-wrap:wrap}
      .header-inner{min-height:66px;gap:10px}
      .logo{font-size:17px}
      .logo img{width:32px;height:32px}
      .member-btn,.open-account{display:none}
      .tools-page{padding:40px 0 58px}
      .page-heading{margin-bottom:28px}
      .page-heading h1{font-size:32px}
      .tool-toolbar{align-items:flex-start;flex-direction:column}
      .tools-grid{grid-template-columns:1fr;gap:15px}
      .tool-card{min-height:225px;padding:20px}
      .tool-note{grid-template-columns:1fr;margin-top:28px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:25px}
      .footer-brand{grid-column:1/-1}
    }
    @media(max-width:430px){
      .footer-grid{grid-template-columns:1fr}
      .footer-brand{grid-column:auto}
    }