:root{
      --primary:#0B3D91;
      --primary-dark:#082d6b;
      --accent:#f27b35;
      --ink:#182334;
      --muted:#687386;
      --line:#e4e9f0;
      --soft:#f5f7fa;
      --white:#fff;
      --shadow:0 18px 50px rgba(16,39,75,.10);
      --radius:16px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#f7f9fc;font-family:"PingFang SC","Microsoft YaHei",Arial,sans-serif;line-height:1.65}
    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:#10233f;color:#dfe8f6;font-size:13px}
    .topbar .container{height:38px;display:flex;align-items:center;justify-content:space-between}
    .topbar-links{display:flex;gap:24px}
    .topbar a{color:#dfe8f6;transition:color .2s}
    .topbar a:hover{color:#fff}

    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{height:76px;display:flex;align-items:center;gap:36px}
    .logo{display:flex;align-items:center;gap:10px;min-width:180px;color:var(--primary);font-size:20px;font-weight:800;letter-spacing:.02em}
    .logo img{width:35px;height:35px;object-fit:contain}
    .main-nav{flex:1}
    .nav-list{display:flex;align-items:stretch;justify-content:center;gap:4px;list-style:none;margin:0;padding:0}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;height:76px;padding:0 14px;color:#334158;font-size:15px;white-space:nowrap}
    .nav-link:hover,.nav-link:focus{color:var(--primary)}
    .has-arrow:after{content:"";width:6px;height:6px;margin:0 0 3px 8px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg)}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% + 1px);left:50%;transform:translateX(-50%) translateY(8px);opacity:0;visibility:hidden;pointer-events:none;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);transition:.2s ease;z-index:30}
    .dropdown-panel{width:250px;padding:12px;border-radius:0 0 12px 12px}
    .dropdown-panel a{display:block;padding:9px 12px;border-radius:8px;font-size:14px}
    .dropdown-panel a:hover{background:var(--soft);color:var(--primary)}
    .mega-menu{width:620px;padding:22px;border-radius:0 0 16px 16px}
    .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;transform:translateX(-50%) translateY(0)}
    .mega-menu:before,.dropdown-panel:before{content:"";position:absolute;left:0;right:0;top:-12px;height:12px}
    .mega-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px;color:var(--primary);font-size:14px;font-weight:700}
    .mega-title a{color:var(--accent);font-size:12px}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
    .mega-card{min-height:78px;padding:12px;border:1px solid var(--line);border-radius:10px;background:#fbfcfe;transition:.2s}
    .mega-card:hover{border-color:#a9bee3;background:#f1f6ff;transform:translateY(-2px)}
    .mega-card img{width:25px;height:25px;object-fit:contain;margin-bottom:5px}
    .mega-card strong,.mega-card small{display:block}
    .mega-card strong{font-size:13px;color:#263753}
    .mega-card small{margin-top:3px;color:var(--muted);font-size:11px;line-height:1.45}
    .mega-footer{display:block;margin-top:16px;padding-top:13px;border-top:1px solid var(--line);color:var(--primary);font-size:13px;font-weight:700}
    .header-btns{display:flex;align-items:center;gap:10px;white-space:nowrap}
    .member-link{color:var(--primary);font-size:14px;font-weight:700}
    .open-account{padding:9px 16px;color:#fff;background:var(--primary);border-radius:8px;font-size:13px;font-weight:700}
    .open-account:hover{background:var(--primary-dark)}
    .hamburger{display:none;width:42px;height:40px;padding:8px;border:1px solid var(--line);background:#fff;border-radius:8px;cursor:pointer}
    .hamburger span{display:block;width:22px;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(8,22,43,.48);opacity:0;visibility:hidden;transition:.25s;z-index:50}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:0;width:min(390px,88vw);height:100vh;background:#fff;transform:translateX(100%);transition:.3s ease;z-index:51;overflow:auto;box-shadow:-14px 0 45px rgba(0,0,0,.15)}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{height:70px;display:flex;align-items:center;gap:16px;padding:0 20px;border-bottom:1px solid var(--line)}
    .drawer-head strong{flex:1;color:var(--primary)}
    .drawer-head a{padding:7px 13px;background:var(--primary);color:#fff;border-radius:7px;font-size:13px}
    .drawer-close{border:0;background:none;color:var(--muted);font-size:28px;line-height:1;cursor:pointer}
    .drawer-menu{padding:14px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 2px;text-align:left;border:0;border-bottom:1px solid var(--line);background:none;color:var(--ink);font-size:15px;cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--primary);font-size:19px}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{max-height:0;overflow:hidden;padding-left:14px;transition:max-height .25s ease}
    .drawer-submenu.open{max-height:900px}
    .drawer-submenu a{display:block;padding:9px 0;color:var(--muted);font-size:14px}

    .tools-page{padding-bottom:80px}
    .tools-hero{position:relative;overflow:hidden;padding:76px 0 86px;background:linear-gradient(135deg,#eef4ff 0%,#fff 58%,#fff5ee 100%)}
    .tools-hero:before{content:"";position:absolute;width:420px;height:420px;right:-120px;top:-180px;border:1px solid rgba(11,61,145,.12);border-radius:50%;box-shadow:0 0 0 34px rgba(11,61,145,.035),0 0 0 70px rgba(11,61,145,.025)}
    .tools-hero .container{position:relative}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;margin-bottom:17px;color:var(--primary);font-size:13px;font-weight:800;letter-spacing:.12em}
    .eyebrow:before{content:"";width:25px;height:3px;background:var(--accent);border-radius:10px}
    .tools-hero h1{max-width:720px;margin:0;color:#122b54;font-size:clamp(34px,5vw,58px);line-height:1.16;letter-spacing:-.04em}
    .tools-hero p{max-width:660px;margin:22px 0 0;color:#617086;font-size:17px}
    .hero-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:29px}
    .hero-meta span{padding:8px 13px;border:1px solid #d7e2f1;border-radius:30px;background:rgba(255,255,255,.7);color:#47617f;font-size:13px}
    .tools-content{padding:70px 0 0}
    .section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:25px}
    .section-heading h2{margin:0;color:#162d50;font-size:28px;line-height:1.25}
    .section-heading p{margin:6px 0 0;color:var(--muted);font-size:14px}
    .tool-count{padding:7px 12px;border-radius:30px;background:#eaf1fc;color:var(--primary);font-size:13px;white-space:nowrap}
    .tools-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .tool-card{position:relative;display:flex;flex-direction:column;min-height:250px;padding:24px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 7px 24px rgba(28,55,94,.045);transition:.25s}
    .tool-card:hover{transform:translateY(-5px);border-color:#a9c2e9;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:#eef4ff}
    .tool-icon img{width:32px;height:32px;object-fit:contain}
    .tool-card h3{margin:0;color:#1d365b;font-size:19px}
    .tool-card p{display:-webkit-box;overflow:hidden;margin:10px 0 22px;color:var(--muted);font-size:14px;line-height:1.7;-webkit-box-orient:vertical;-webkit-line-clamp:3}
    .tool-link{display:inline-flex;align-items:center;gap:7px;margin-top:auto;color:var(--primary);font-size:13px;font-weight:800}
    .tool-link:after{content:"→";font-size:18px;transition:transform .2s}
    .tool-card:hover .tool-link:after{transform:translateX(4px)}
    .tools-note{display:flex;align-items:center;gap:18px;margin-top:30px;padding:20px 24px;border:1px solid #f1d8c8;border-radius:14px;background:#fff9f5}
    .tools-note strong{color:#a94d1d;font-size:15px}
    .tools-note span{color:#7b6b65;font-size:13px}
    .footer{padding:58px 0 20px;background:#101d31;color:#c5d0df}
    .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:38px}
    .footer-brand{margin-bottom:14px;color:#fff;font-size:20px;font-weight:800}
    .footer p{margin:7px 0;color:#9eacc0;font-size:13px}
    .footer h3{margin:0 0 13px;color:#fff;font-size:15px}
    .footer-grid a{display:block;margin:8px 0;color:#aebbd0;font-size:13px}
    .footer-grid a:hover{color:#fff}
    .footer-bottom{display:flex;justify-content:space-between;gap:20px;margin-top:36px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);color:#8998ae;font-size:12px}

    @media(max-width:1050px){
      .header-inner{gap:15px}
      .logo{min-width:150px}
      .nav-link{padding:0 8px;font-size:14px}
      .member-link{display:none}
      .tools-grid{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:780px){
      .container{width:min(100% - 30px,600px)}
      .topbar .container{height:auto;min-height:38px;padding:8px 0;align-items:flex-start;gap:8px;flex-direction:column}
      .topbar-links{gap:14px}
      .main-nav{display:none}
      .header-inner{height:68px}
      .logo{flex:1}
      .hamburger{display:block}
      .mega-menu,.dropdown-panel{display:none}
      .open-account{padding:8px 11px}
      .tools-hero{padding:54px 0 60px}
      .tools-hero h1{font-size:38px}
      .tools-hero p{font-size:15px}
      .tools-content{padding-top:48px}
      .section-heading{align-items:flex-start;flex-direction:column}
      .tools-grid{grid-template-columns:1fr}
      .tool-card{min-height:220px}
      .tools-note{align-items:flex-start;flex-direction:column;gap:5px}
      .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
      .footer-bottom{align-items:flex-start;flex-direction:column;gap:7px}
    }
    @media(max-width:460px){
      .container{width:calc(100% - 28px)}
      .topbar{font-size:12px}
      .topbar-links{flex-direction:column;gap:0}
      .header-btns{gap:7px}
      .open-account{font-size:12px}
      .tools-hero h1{font-size:32px}
      .footer-grid{grid-template-columns:1fr}
    }