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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f5f5f5;
        }

        .top-header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 30px 0;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }

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

        .header-content {
            text-align: center;
        }

        .header-content h1 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 10px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
        }

        .header-subtitle {
            font-size: 1.2rem;
            font-weight: 300;
            opacity: 0.95;
        }

        .main-content {
            background: white;
            margin: 40px auto;
            padding: 50px;
            border-radius: 10px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.1);
        }

        .page-title {
            font-size: 2.2rem;
            color: #2c3e50;
            margin-bottom: 30px;
            padding-bottom: 15px;
            border-bottom: 3px solid #667eea;
        }

        article {
            margin-bottom: 40px;
        }

        article h2 {
            font-size: 1.8rem;
            color: #34495e;
            margin: 30px 0 20px 0;
            padding-left: 15px;
            border-left: 4px solid #667eea;
        }

        article h3 {
            font-size: 1.4rem;
            color: #555;
            margin: 25px 0 15px 0;
        }

        article p {
            margin-bottom: 20px;
            font-size: 1.05rem;
            line-height: 1.8;
            color: #555;
        }

        article ul {
            margin: 20px 0;
            padding-left: 30px;
        }

        article ul li {
            margin-bottom: 12px;
            line-height: 1.7;
            color: #555;
        }

        article strong {
            color: #2c3e50;
            font-weight: 600;
        }

        .highlight-box {
            background: linear-gradient(135deg, #e0f7fa 0%, #e1f5fe 100%);
            border-left: 5px solid #00acc1;
            padding: 25px;
            margin: 30px 0;
            border-radius: 5px;
        }

        .transition-section {
            margin: 40px 0;
            padding: 30px;
            background: #f8f9fa;
            border-radius: 8px;
        }

        .transition-section p {
            font-size: 1.05rem;
            color: #555;
            line-height: 1.8;
        }

        .links-section {
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            padding: 50px 30px;
            margin: 40px 0;
            border-radius: 10px;
        }

        .links-section h3 {
            font-size: 1.6rem;
            color: #2c3e50;
            margin-bottom: 25px;
            text-align: center;
        }

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .links-section ul li {
            background: white;
            padding: 0;
            border-radius: 5px;
            transition: all 0.3s ease;
            box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        }

        .links-section ul li:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0,0,0,0.2);
        }

        .links-section ul li a {
            display: block;
            padding: 15px 20px;
            color: #667eea;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s ease;
        }

        .links-section ul li a:hover {
            color: #764ba2;
        }

        footer {
            background: #2c3e50;
            color: white;
            text-align: center;
            padding: 30px 20px;
            margin-top: 60px;
        }

        footer p {
            margin: 0;
            opacity: 0.9;
        }

        @media (max-width: 768px) {
            .header-content h1 {
                font-size: 1.8rem;
            }

            .header-subtitle {
                font-size: 1rem;
            }

            .main-content {
                padding: 30px 20px;
                margin: 20px auto;
            }

            .page-title {
                font-size: 1.6rem;
            }

            article h2 {
                font-size: 1.4rem;
            }

            article h3 {
                font-size: 1.2rem;
            }

            article p, article ul li {
                font-size: 1rem;
            }

            .links-section {
                padding: 30px 15px;
            }

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

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

        @media (max-width: 480px) {
            .top-header {
                padding: 20px 0;
            }

            .header-content h1 {
                font-size: 1.5rem;
            }

            .main-content {
                padding: 20px 15px;
            }

            .page-title {
                font-size: 1.4rem;
            }
        }