:root{
      --primary:#0B3D91;
      --primary-dark:#082d6b;
      --ink:#172033;
      --muted:#667085;
      --line:#dfe5ef;
      --soft:#f4f7fb;
      --white:#fff;
      --accent:#16a085;
      --shadow:0 18px 50px rgba(11,61,145,.10);
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{margin:0;color:var(--ink);background:#fff;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.6}
    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:#092d68;color:#dce8ff;font-size:13px}
    .topbar .container{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:20px}
    .topbar-links{display:flex;gap:22px}
    .topbar a{color:#fff;opacity:.9}
    .header{position:relative;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
    .header-inner{min-height:78px;display:flex;align-items:center;gap:28px}
    .logo{display:flex;align-items:center;gap:10px;color:var(--primary);font-weight:800;font-size:19px;white-space:nowrap}
    .logo img{width:38px;height:38px;object-fit:contain}
    .main-nav{margin-left:auto}
    .nav-list{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}
    .nav-item{position:relative}
    .nav-link{display:flex;align-items:center;gap:6px;padding:28px 12px;font-size:14px;font-weight:650;color:#344054;white-space:nowrap}
    .nav-link:hover,.nav-link:focus{color:var(--primary)}
    .has-arrow:after{content:"";width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;transform:rotate(45deg) translateY(-2px)}
    .dropdown-panel,.mega-menu{position:absolute;top:calc(100% - 1px);left:50%;transform:translateX(-50%) translateY(8px);width:320px;padding:22px;background:#fff;border:1px solid var(--line);border-radius:0 0 16px 16px;box-shadow:var(--shadow);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}
    .mega-menu{width:620px}
    .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)}
    .nav-item:after{content:"";position:absolute;left:0;right:0;bottom:-10px;height:12px}
    .panel-title{margin:0 0 14px;color:var(--primary);font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
    .panel-list{display:grid;gap:10px}
    .panel-list a{font-size:14px;color:#344054;padding-bottom:9px;border-bottom:1px solid #edf0f5}
    .mega-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
    .mega-card{display:block;padding:11px;border:1px solid var(--line);border-radius:12px;background:#fbfcfe}
    .mega-card:hover{border-color:#9ab5e4;background:#f4f8ff}
    .mega-card img{width:100%;height:58px;object-fit:cover;border-radius:8px;margin-bottom:8px}
    .mega-card strong{display:block;font-size:13px;line-height:1.35}
    .mega-card small{display:block;color:var(--muted);font-size:11px;line-height:1.45;margin-top:5px}
    .mega-footer{display:block;margin-top:16px;color:var(--primary);font-size:13px;font-weight:750}
    .header-btns{display:flex;align-items:center;gap:9px}
    .member-btn,.account-btn{padding:10px 14px;border-radius:9px;font-size:13px;font-weight:750;white-space:nowrap}
    .member-btn{color:var(--primary);border:1px solid #b8c9e5}
    .account-btn{color:#fff;background:var(--primary)}
    .hamburger{display:none;border:0;background:transparent;padding:8px;cursor:pointer}
    .hamburger span{display:block;width:23px;height:2px;margin:5px 0;background:var(--ink);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{position:fixed;inset:0;background:rgba(8,25,56,.48);opacity:0;visibility:hidden;z-index:40;transition:.25s}
    .drawer-overlay.open{opacity:1;visibility:visible}
    .mobile-drawer{position:fixed;top:0;right:0;width:min(380px,88vw);height:100vh;background:#fff;z-index:50;transform:translateX(100%);transition:.3s;overflow:auto}
    .mobile-drawer.open{transform:translateX(0)}
    .drawer-head{display:flex;align-items:center;gap:12px;padding:22px;border-bottom:1px solid var(--line);font-weight:800;color:var(--primary)}
    .drawer-head>a{margin-left:auto;color:var(--primary);font-size:13px}
    .drawer-close{border:0;background:#eef3fb;color:var(--primary);width:34px;height:34px;border-radius:50%;font-size:23px;line-height:1;cursor:pointer}
    .drawer-menu{padding:12px 22px 30px}
    .drawer-link,.drawer-toggle{display:block;width:100%;padding:15px 0;border:0;border-bottom:1px solid #edf0f5;background:none;text-align:left;color:var(--ink);font-weight:700;cursor:pointer}
    .drawer-submenu{display:none;padding:4px 0 8px 16px}
    .drawer-submenu.open{display:block}
    .drawer-submenu a{display:block;padding:9px 0;color:var(--muted);font-size:14px}
    .drawer-toggle:after{content:"+";float:right;color:var(--primary);font-size:20px;font-weight:400}
    .drawer-toggle.active:after{content:"−"}
    .footer{margin-top:70px;background:#0b1d3b;color:#d9e4f7}
    .footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:42px;padding:58px 0 42px}
    .footer-brand strong{display:block;color:#fff;font-size:20px;margin-bottom:12px}
    .footer p{margin:8px 0;color:#aebed8;font-size:13px}
    .footer h3{margin:0 0 15px;color:#fff;font-size:14px}
    .footer-links{display:grid;gap:9px}
    .footer-links a{color:#b9c8de;font-size:13px}
    .footer-links a:hover{color:#fff}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.14);padding:20px 0;display:flex;justify-content:space-between;gap:20px;color:#93a7c7;font-size:12px}
    .tool-detail-page{padding:56px 0 10px;background:linear-gradient(180deg,#f6f9fd 0,#fff 58%)}
    .tool-breadcrumb{display:flex;gap:8px;align-items:center;color:var(--muted);font-size:13px;margin-bottom:28px}
    .tool-breadcrumb a{color:var(--primary);font-weight:700}
    .tool-hero{padding:38px;border:1px solid var(--line);border-radius:24px;background:#fff;box-shadow:var(--shadow);display:flex;align-items:center;gap:28px}
    .tool-icon{width:82px;height:82px;object-fit:contain;padding:15px;border-radius:20px;background:#edf4ff;border:1px solid #cbdcf7}
    .tool-kicker{margin:0 0 5px;color:var(--accent);font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase}
    .tool-hero h1{margin:0;color:var(--primary-dark);font-size:clamp(30px,4vw,48px);line-height:1.12}
    .tool-summary{max-width:760px;margin:12px 0 0;color:var(--muted);font-size:16px}
    .tool-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:28px;margin-top:30px;align-items:start}
    .tool-content,.related-tools{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:0 10px 30px rgba(23,32,51,.05)}
    .tool-content{padding:34px;min-width:0;max-width:100%;overflow-x:auto}
    .tool-content h2{margin:0 0 18px;color:var(--primary-dark);font-size:24px}
    .tool-body{min-width:0;max-width:100%;overflow-x:auto;color:#465467}
    .tool-body img,.tool-body table{max-width:100%}
    .tool-body a{color:var(--primary);text-decoration:underline}
    .tool-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;padding-top:20px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}
    .related-tools{padding:24px}
    .related-tools h2{margin:0 0 16px;font-size:19px;color:var(--primary-dark)}
    .related-card{display:flex;gap:12px;padding:13px 0;border-bottom:1px solid #edf0f5}
    .related-card:last-child{border-bottom:0}
    .related-card img{width:44px;height:44px;object-fit:contain;border-radius:10px;background:#edf4ff;padding:7px}
    .related-card strong{display:block;font-size:14px}
    .related-card span{display:block;color:var(--muted);font-size:12px;line-height:1.4;margin-top:3px}
    .tool-cta{display:inline-flex;margin-top:25px;padding:12px 18px;border-radius:9px;background:var(--primary);color:#fff;font-size:14px;font-weight:750}
    @media(max-width:1050px){
      .main-nav{display:none}
      .hamburger{display:block}
      .footer-main{grid-template-columns:repeat(2,1fr)}
    }
    @media(max-width:720px){
      .container{width:min(100% - 28px,1180px)}
      .topbar .container{align-items:flex-start;padding:9px 0;flex-direction:column;gap:2px}
      .topbar-links{gap:12px;flex-wrap:wrap}
      .header-inner{min-height:68px;gap:10px}
      .member-btn{display:none}
      .account-btn{padding:9px 11px}
      .tool-detail-page{padding-top:32px}
      .tool-hero{display:block;padding:24px}
      .tool-icon{margin-bottom:18px}
      .tool-layout{grid-template-columns:1fr}
      .tool-content{padding:23px}
      .footer-main{grid-template-columns:1fr;gap:28px;padding:40px 0 30px}
      .footer-bottom{display:block}
      .footer-bottom span{display:block;margin:5px 0}
      .mega-grid{grid-template-columns:1fr 1fr}
    }