* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        h1 {
            color: #2c3e50;
            font-size: 2.5rem;
            font-weight: 700;
            text-align: center;
            margin: 40px 0;
            padding: 0 20px;
        }

        article {
            background: white;
            border-radius: 12px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            margin: 30px auto;
            padding: 40px;
            max-width: 800px;
        }

        article h2 {
            color: #2c3e50;
            font-size: 1.8rem;
            margin: 30px 0 15px 0;
            font-weight: 600;
        }

        article h3 {
            color: #34495e;
            font-size: 1.4rem;
            margin: 25px 0 12px 0;
            font-weight: 600;
        }

        article h4 {
            color: #34495e;
            font-size: 1.2rem;
            margin: 20px 0 10px 0;
            font-weight: 600;
        }

        article p {
            margin-bottom: 20px;
            color: #555;
            font-size: 1.1rem;
        }

        .transition-section {
            background: white;
            border-radius: 12px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            margin: 30px auto;
            padding: 30px 40px;
            max-width: 800px;
        }

        .transition-section p {
            color: #555;
            font-size: 1.1rem;
            margin-bottom: 15px;
        }

        .links-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 12px;
            margin: 30px auto 50px auto;
            padding: 40px;
            max-width: 1000px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
        }

        .links-section h3 {
            color: white;
            font-size: 1.5rem;
            margin: 30px 0 20px 0;
            font-weight: 600;
            border-bottom: 2px solid rgba(255, 255, 255, 0.3);
            padding-bottom: 10px;
        }

        .links-section h3:first-child {
            margin-top: 0;
        }

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 15px 30px;
            margin-bottom: 25px;
        }

        .links-section li {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 8px;
            transition: all 0.3s ease;
        }

        .links-section li:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }

        .links-section a {
            color: white;
            text-decoration: none;
            display: block;
            padding: 15px 20px;
            font-weight: 500;
            border-radius: 8px;
            transition: color 0.3s ease;
        }

        .links-section a:hover {
            color: #f1f2f6;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 15px;
            }

            h1 {
                font-size: 2rem;
                margin: 30px 0;
            }

            article, .transition-section {
                padding: 25px 20px;
                margin: 20px 15px;
            }

            .links-section {
                padding: 25px 20px;
                margin: 20px 15px 40px 15px;
            }

            .links-section ul {
                grid-template-columns: 1fr;
                gap: 10px;
            }

            article h2 {
                font-size: 1.5rem;
            }

            article h3 {
                font-size: 1.3rem;
            }

            article p, .transition-section p {
                font-size: 1rem;
            }
        }

        @media (max-width: 480px) {
            h1 {
                font-size: 1.8rem;
            }

            article, .transition-section, .links-section {
                margin: 15px 10px;
                padding: 20px 15px;
            }
        }