* {
            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: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            min-height: 100vh;
            padding: 20px;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            background: #ffffff;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
            border-radius: 12px;
            overflow: hidden;
        }

        h1 {
            font-size: 2.5rem;
            color: #2c3e50;
            padding: 40px 40px 20px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            text-align: center;
            font-weight: 700;
        }

        article {
            padding: 40px;
            background: #ffffff;
        }

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

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

        article h4 {
            font-size: 1.2rem;
            color: #4a5568;
            margin-top: 20px;
            margin-bottom: 10px;
            font-weight: 600;
        }

        article p {
            margin-bottom: 16px;
            font-size: 1.05rem;
            color: #4a5568;
            text-align: justify;
        }

        .transition-section {
            padding: 30px 40px;
            background: #f8f9fa;
            border-top: 1px solid #e9ecef;
        }

        .transition-section p {
            font-size: 1.05rem;
            color: #4a5568;
            margin-bottom: 16px;
            text-align: justify;
        }

        .links-section {
            padding: 40px;
            background: #f8f9fa;
            border-top: 1px solid #e9ecef;
        }

        .links-section h3 {
            font-size: 1.5rem;
            color: #2c3e50;
            margin-bottom: 20px;
            margin-top: 30px;
            font-weight: 600;
            padding-bottom: 10px;
            border-bottom: 3px solid #667eea;
            display: inline-block;
        }

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

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px 20px;
            margin-bottom: 30px;
        }

        .links-section li {
            padding: 0;
        }

        .links-section a {
            color: #667eea;
            text-decoration: none;
            font-size: 1rem;
            transition: color 0.3s ease, padding-left 0.3s ease;
            display: inline-block;
            position: relative;
            padding-left: 20px;
        }

        .links-section a:before {
            content: "→";
            position: absolute;
            left: 0;
            transition: left 0.3s ease;
        }

        .links-section a:hover {
            color: #764ba2;
            padding-left: 25px;
        }

        .links-section a:hover:before {
            left: 5px;
        }

        @media (max-width: 768px) {
            body {
                padding: 10px;
            }

            h1 {
                font-size: 1.8rem;
                padding: 30px 20px 15px;
            }

            article {
                padding: 25px 20px;
            }

            article h2 {
                font-size: 1.5rem;
            }

            article h3 {
                font-size: 1.3rem;
            }

            article h4 {
                font-size: 1.1rem;
            }

            article p {
                font-size: 1rem;
            }

            .transition-section {
                padding: 20px;
            }

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

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

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

            .links-section h3 {
                font-size: 1.3rem;
            }

            .links-section a {
                font-size: 0.95rem;
            }
        }

        @media (max-width: 480px) {
            h1 {
                font-size: 1.5rem;
            }

            .container {
                border-radius: 8px;
            }
        }