body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
            background-color: #f5f5f5;
            margin: 0;
            padding: 0;
        }
        
        .tool-link {
            display: inline-flex;
            align-items: center;
            padding: 0.25rem 0.75rem;
            background-color: #dbeafe;
            color: #1e40af;
            border-radius: 9999px;
            font-size: 0.875rem;
            transition: background-color 0.2s;
            text-decoration: none;
            margin: 0.25rem;
        }
        
        .tool-link:hover {
            background-color: #bfdbfe;
        }
        
        .external-icon {
            margin-left: 0.25rem;
            width: 14px;
            height: 14px;
        }
        
        @media (max-width: 640px) {
            .container {
                padding: 1rem;
            }
            
            h1 {
                font-size: 1.75rem;
            }
        }