:root {
            --primary-color: #1a202c;
            --secondary-color: #4a5568;
            --accent-color: #68d391;
            --text-color: #f7fafc;
            --light-gray: #cbd5e1;
            --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        body {
            font-family: var(--font-family);
            background-color: var(--primary-color);
            color: var(--text-color);
            margin: 0;
            padding: 0;
            line-height: 1.6;
        }
        .container {
            max-width: 800px;
            margin: 2rem auto;
            padding: 1.5rem;
            background-color: var(--secondary-color);
            border-radius: 8px;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
        }
        h1, h2, h3 {
            color: var(--accent-color);
            margin-bottom: 1rem;
            font-weight: bold;
        }
        h1 {
            font-size: 2.5rem;
            text-align: center;
        }
        h2 {
            font-size: 2rem;
        }
        h3 {
            font-size: 1.5rem;
        }
        p {
            margin-bottom: 1rem;
        }
        a {
            color: var(--accent-color);
            text-decoration: none;
        }
        a:hover {
            text-decoration: underline;
        }
        ul, ol {
            margin-bottom: 1rem;
            padding-left: 1.5rem;
        }
        li {
            margin-bottom: 0.5rem;
        }
        .table-of-contents {
            margin-bottom: 1.5rem;
            padding: 1rem;
            border-radius: 4px;
            background-color: var(--primary-color);
            border: 1px solid var(--light-gray);
        }
        .table-of-contents ul {
            list-style: none;
            padding-left: 0;
        }
        .table-of-contents a {
            display: block;
            padding: 0.5rem 0;
        }
        .faq {
            margin-top: 2rem;
        }
        .faq h2 {
            margin-bottom: 1rem;
        }
        .faq-question {
            font-weight: bold;
            margin-bottom: 0.5rem;
        }
        .faq-answer {
            margin-bottom: 1rem;
        }
        @media (max-width: 768px) {
            .container {
                padding: 1rem;
            }
            h1 {
                font-size: 2rem;
            }
            h2 {
                font-size: 1.75rem;
            }
            h3 {
                font-size: 1.3rem;
            }
        }