* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: #f8f9fa;
            color: #333;
            line-height: 1.6;
            padding: 20px;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
        }
        
        header {
            text-align: center;
            margin-bottom: 50px;
        }
        
        h1 {
            font-size: 2.5rem;
            margin-bottom: 15px;
            color: #2c3e50;
        }
        
        .subtitle {
            font-size: 1.2rem;
            color: #7f8c8d;
            max-width: 600px;
            margin: 0 auto;
        }
        
        .content-section {
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            padding: 40px;
            margin-bottom: 30px;
        }
        
        h2 {
            font-size: 1.8rem;
            margin-bottom: 20px;
            color: #2c3e50;
            padding-bottom: 10px;
            border-bottom: 1px solid #ecf0f1;
        }
        
        h3 {
            font-size: 1.4rem;
            margin: 25px 0 15px 0;
            color: #2c3e50;
        }
        
        h4 {
            font-size: 1.1rem;
            margin: 20px 0 10px 0;
            color: #2c3e50;
        }
        
        p {
            margin-bottom: 15px;
            color: #555;
        }
        
        /* ul {
            margin: 15px 0 15px 30px;
        } */
        
        li {
            margin-bottom: 10px;
            color: #555;
        }
        
        .highlight-box {
            background: #f8f9fa;
            border-left: 4px solid #3498db;
            padding: 20px;
            margin: 20px 0;
            border-radius: 0 5px 5px 0;
        }
        
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
            margin: 30px 0;
        }
        
        .feature-card {
            background: #f8f9fa;
            padding: 25px;
            border-radius: 8px;
            border: 1px solid #ecf0f1;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
        }
        
        .feature-icon {
            font-size: 2.5rem;
            margin-bottom: 15px;
            color: #3498db;
        }
        
        .use-cases {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin: 30px 0;
        }
        
        .use-case-card {
            background: white;
            padding: 25px;
            border-radius: 8px;
            border: 1px solid #ecf0f1;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
        }
        
        .use-case-card h4 {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #2980b9;
        }
        
        .pricing-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin: 40px 0;
        }
        
        .pricing-card {
            background: white;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            padding: 30px;
            transition: transform 0.3s ease;
            border: 2px solid transparent;
            position: relative;
        }
        
        .pricing-card:hover {
            transform: translateY(-5px);
        }
        
        .pricing-card.popular {
            border-color: #3498db;
            transform: scale(1.05);
        }
        
        .popular-tag {
            position: absolute;
            top: -10px;
            right: 20px;
            background: #3498db;
            color: white;
            padding: 5px 15px;
            border-radius: 15px;
            font-size: 0.8rem;
            font-weight: 600;
        }
        
        .plan-name {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: #2c3e50;
        }
        
        .plan-description {
            color: #7f8c8d;
            margin-bottom: 20px;
            font-size: 0.95rem;
        }
        
        .price {
            font-size: 2.5rem;
            font-weight: 700;
            margin: 20px 0;
            color: #2c3e50;
        }
        
        .price .currency {
            font-size: 1.5rem;
            vertical-align: super;
        }
        
        .price .period {
            font-size: 1rem;
            color: #7f8c8d;
            font-weight: normal;
        }
        
        .features-list {
            list-style: none;
            margin: 25px 0;
        }
        
        .features-list li {
            padding: 8px 0;
            display: flex;
            align-items: flex-start;
        }
        
        .features-list li:before {
            content: "✓";
            color: #27ae60;
            font-weight: bold;
            margin-right: 10px;
        }
        
        .btn {
            display: block;
            width: 100%;
            padding: 12px;
            text-align: center;
            background: #3498db;
            color: white;
            border: none;
            border-radius: 5px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s ease;
            margin-top: 20px;
        }
        
        .btn:hover {
            background: #2980b9;
        }
        
        .btn-secondary {
            background: #ecf0f1;
            color: #2c3e50;
        }
        
        .btn-secondary:hover {
            background: #d5dbdb;
        }
        
        .integration-logos {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 30px;
            margin: 30px 0;
            padding: 20px;
            background: #f8f9fa;
            border-radius: 8px;
        }
        
        .integration-logo {
            font-size: 2rem;
            color: #7f8c8d;
            transition: color 0.3s ease;
        }
        
        .integration-logo:hover {
            color: #3498db;
        }
        
        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 30px;
            color: #3498db;
            text-decoration: none;
            font-weight: 500;
        }
        
        .back-link:hover {
            text-decoration: underline;
        }
        
        .toc-nav {
            background: #f8f9fa;
            padding: 20px;
            border-radius: 8px;
            margin-bottom: 30px;
        }
        
        .toc-nav h3 {
            margin-top: 0;
            color: #2c3e50;
        }
        
        .toc-nav ul {
            columns: 2;
            list-style: none;
            margin-left: 0;
        }
        
        .toc-nav li {
            margin-bottom: 8px;
        }
        
        .toc-nav a {
            color: #3498db;
            text-decoration: none;
        }
        
        .toc-nav a:hover {
            text-decoration: underline;
        }
        
        @media (max-width: 768px) {
            .content-section {
                padding: 25px;
            }
            
            h1 {
                font-size: 2rem;
            }
            
            h2 {
                font-size: 1.5rem;
            }
            
            .toc-nav ul {
                columns: 1;
            }
            
            .feature-grid,
            .use-cases,
            .pricing-cards {
                grid-template-columns: 1fr;
            }
            
            .pricing-card.popular {
                transform: none;
            }
        }