:root{
      --primary:#0B3D91;
      --teal:#0891B2;
      --ink:#152238;
      --muted:#64748b;
      --line:#dbe5ef;
      --soft:#f2f8fb;
      --white:#fff;
      --shadow:0 18px 45px rgba(15,45,75,.1);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#f8fbfd;font:15px/1.65 Arial,Helvetica,sans-serif}
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button{font:inherit}
    .container{width:min(1180px,calc(100% - 40px));margin:auto}
    .topbar{background:#10243b;color:#d9edf4;font-size:13px}
    .topbar-inner{display:flex;justify-content:space-between;align-items:center;min-height:36px;gap:20px}
    .topbar p{margin:0}
    .topbar-contact{display:flex;gap:22px}
    .topbar-contact a:hover{color:#fff}
    .header{position:relative;z-index:30;background:#fff;border-bottom:1px solid #e7eef3}
    .header-inner{min-height:78px;display:flex;align-items:center;gap:30px}
    .logo{display:flex;align-items:center;gap:10px;white-space:nowrap;font-weight:800;color:var(--primary);font-size:18px}
    .logo img{width:38px;height:38px;object-fit:contain}
    .main-nav{margin-left:auto}
    .nav-list{list-style:none;display:flex;align-items:stretch;gap:3px;margin:0;padding:0}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:6px;padding:27px 13px;font-weight:700;color:#334155}
    .nav-link:hover{color:var(--teal)}
    .has-arrow:after{content:"⌄";font-size:13px;color:#7b8a9a}
    .dropdown-panel,.mega-menu{position:absolute;top:100%;left:50%;transform:translateX(-50%);opacity:0;visibility:hidden;pointer-events:none;transition:.2s ease;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow);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}
    .dropdown-panel{width:300px;padding:12px}
    .dropdown-panel a{display:block;padding:10px 12px;border-radius:9px}
    .dropdown-panel a:hover{background:var(--soft);color:var(--teal)}
    .dropdown-panel .dropdown-all{border-top:1px solid var(--line);margin-top:8px;color:var(--primary);font-weight:700}
    .mega-menu{width:min(850px,calc(100vw - 30px));padding:0}
    .mega-inner{padding:22px}
    .mega-heading{display:flex;flex-direction:column;gap:3px;margin-bottom:18px}
    .mega-heading strong{font-size:18px;color:var(--primary)}
    .mega-heading span{color:var(--muted);font-size:13px}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .mega-card{display:flex;gap:10px;padding:10px;border:1px solid var(--line);border-radius:12px;min-width:0}
    .mega-card:hover{border-color:var(--teal);background:#f7fcfd}
    .mega-card img{width:42px;height:42px;object-fit:contain;border-radius:8px;flex:none}
    .mega-card-body{min-width:0;display:flex;flex-direction:column;gap:3px}
    .mega-card-title{font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .mega-card-text{font-size:12px;color:var(--muted);display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .mega-card-meta{display:flex;gap:8px;color:var(--teal);font-size:11px}
    .mega-categories{display:flex;flex-wrap:wrap;gap:7px;margin:-4px 0 17px}
    .mega-categories a{font-size:12px;padding:5px 10px;border-radius:30px;background:var(--soft);color:var(--primary)}
    .mega-footer{display:block;border-top:1px solid var(--line);margin-top:18px;padding-top:15px;color:var(--primary);font-weight:700}
    .header-btns{display:flex;align-items:center;gap:13px}
    .open-account{background:var(--primary);color:#fff;border-radius:9px;padding:10px 15px;font-weight:700}
    .open-account:hover{background:var(--teal)}
    .hamburger{display:none;width:42px;height:40px;border:1px solid var(--line);background:#fff;border-radius:9px;padding:9px;cursor:pointer}
    .hamburger span{display:block;height:2px;background:var(--primary);margin:4px 0;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(5,20,35,.48);opacity:0;visibility:hidden;z-index:50;transition:.2s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;right:0;top:0;height:100vh;width:min(390px,92vw);background:#fff;z-index:60;transform:translateX(100%);transition:.25s ease;overflow:auto;box-shadow:-15px 0 40px rgba(0,0,0,.16)}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:12px;padding:20px;border-bottom:1px solid var(--line)}
    .drawer-head>a{margin-left:auto;color:var(--primary);font-weight:700}
    .drawer-close{border:0;background:transparent;font-size:28px;line-height:1;cursor:pointer;color:var(--muted)}
    .drawer-menu{padding:12px 20px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:14px 0;text-align:left;border:0;border-bottom:1px solid #edf2f5;background:none;color:var(--ink);font-weight:700;cursor:pointer}
    .drawer-toggle:after{content:"+";float:right;color:var(--teal);font-size:20px}
    .drawer-toggle.active:after{content:"−"}
    .drawer-submenu{display:none;padding:4px 0 8px 14px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:8px 0;color:var(--muted);font-size:14px}
    .footer{background:#10243b;color:#c8d8e5;margin-top:70px}
    .footer-main{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding:52px 0 38px}
    .footer .logo{color:#fff;margin-bottom:16px}
    .footer-brand p{max-width:330px;color:#a9bdcc;margin:0}
    .footer h3{font-size:15px;color:#fff;margin:5px 0 15px}
    .footer-links,.footer-contact{display:grid;gap:9px}
    .footer-links a,.footer-contact a{color:#b6cad8;font-size:14px}
    .footer-links a:hover,.footer-contact a:hover{color:#fff}
    .footer-social{margin-top:18px;color:#fff}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.14);display:flex;justify-content:space-between;gap:20px;padding:18px 0;font-size:12px;color:#9fb4c3}
    .tool-detail-page{padding:0 0 20px}
    .tool-hero{background:linear-gradient(135deg,#e9f8fb 0%,#fff 62%);border-bottom:1px solid #dcecf0;padding:58px 0 50px}
    .breadcrumbs{display:flex;gap:9px;flex-wrap:wrap;color:var(--muted);font-size:13px;margin-bottom:24px}
    .breadcrumbs a{color:var(--primary)}
    .tool-hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:35px;align-items:center}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--teal);font-weight:800;text-transform:uppercase;letter-spacing:.08em;font-size:12px}
    .eyebrow:before{content:"";width:28px;height:2px;background:var(--teal)}
    .tool-detail-page h1{font-size:clamp(32px,5vw,58px);line-height:1.08;margin:13px 0 16px;color:var(--ink)}
    .tool-lead{font-size:18px;line-height:1.7;color:#526579;max-width:720px;margin:0}
    .tool-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
    .meta-pill{background:#fff;border:1px solid #cde4ea;border-radius:30px;padding:7px 13px;color:#496276;font-size:13px}
    .tool-icon-card{background:#fff;border:1px solid #cfe4ea;border-radius:24px;padding:30px;box-shadow:var(--shadow);text-align:center}
    .tool-icon-card img{width:100px;height:100px;object-fit:contain;margin:0 auto 16px}
    .tool-icon-card strong{display:block;color:var(--primary);font-size:18px}
    .tool-content-wrap{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:34px;align-items:start;padding-top:46px}
    .content-card,.related-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:0 10px 30px rgba(15,45,75,.05)}
    .content-card{padding:clamp(22px,4vw,42px);min-width:0}
    .content-card h2{margin:0 0 22px;color:var(--primary);font-size:25px}
    .tool-body{min-width:0;max-width:100%;overflow-x:auto;color:#42566a;font-size:16px}
    .tool-body img,.tool-body video,.tool-body iframe{max-width:100%;height:auto}
    .tool-body table{max-width:100%;display:block;overflow-x:auto;border-collapse:collapse}
    .tool-body h2,.tool-body h3{color:var(--ink);line-height:1.3}
    .tool-body a{color:var(--primary);text-decoration:underline}
    .tool-body blockquote{margin:24px 0;padding:16px 20px;border-left:4px solid var(--teal);background:var(--soft);color:#3d596c}
    .related-card{padding:22px;position:sticky;top:20px}
    .related-card h2{font-size:19px;color:var(--primary);margin:0 0 15px}
    .related-tool{display:grid;grid-template-columns:42px minmax(0,1fr);gap:11px;padding:13px 0;border-top:1px solid var(--line)}
    .related-tool img{width:42px;height:42px;object-fit:contain;border-radius:8px}
    .related-tool strong{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .related-tool span{display:block;color:var(--muted);font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
    .related-all{display:block;margin-top:15px;color:var(--primary);font-weight:700}
    @media(max-width:1050px){
      .nav-link{padding-left:8px;padding-right:8px;font-size:13px}
      .header-inner{gap:14px}
      .footer-main{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:820px){
      .topbar-inner{padding:8px 0;align-items:flex-start}
      .topbar-contact{flex-direction:column;gap:0;text-align:right}
      .main-nav{display:none}
      .hamburger{display:block}
      .open-account{display:none}
      .tool-hero-grid,.tool-content-wrap{grid-template-columns:1fr}
      .tool-icon-card{max-width:300px}
      .related-card{position:static}
    }
    @media(max-width:560px){
      .container{width:min(100% - 28px,1180px)}
      .topbar{font-size:11px}
      .topbar-inner{gap:10px}
      .footer-main{grid-template-columns:1fr;gap:26px;padding:38px 0 28px}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin:5px 0}
      .tool-hero{padding:38px 0 34px}
      .tool-detail-page h1{font-size:36px}
      .tool-lead{font-size:16px}
    }