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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: #333;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
        }

        header {
            background: rgba(255, 255, 255, 0.95);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            padding: 1.5rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
        }

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

        h1 {
            color: #667eea;
            font-size: 2.5rem;
            margin-bottom: 2rem;
            text-align: center;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
        }

        .main-content {
            background: white;
            border-radius: 15px;
            padding: 3rem 2rem;
            margin: 2rem auto;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
        }

        article {
            margin-bottom: 3rem;
        }

        article h2 {
            color: #764ba2;
            font-size: 2rem;
            margin-top: 2rem;
            margin-bottom: 1rem;
            border-bottom: 3px solid #667eea;
            padding-bottom: 0.5rem;
        }

        article h3 {
            color: #667eea;
            font-size: 1.5rem;
            margin-top: 1.5rem;
            margin-bottom: 0.75rem;
        }

        article h4 {
            color: #764ba2;
            font-size: 1.25rem;
            margin-top: 1.25rem;
            margin-bottom: 0.5rem;
        }

        article p {
            margin-bottom: 1.25rem;
            font-size: 1.05rem;
            line-height: 1.8;
            color: #555;
        }

        .transition-section {
            background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
            padding: 2rem;
            border-radius: 10px;
            margin-bottom: 2rem;
            border-left: 4px solid #667eea;
        }

        .transition-section p {
            font-size: 1.05rem;
            line-height: 1.8;
            color: #555;
            margin-bottom: 1rem;
        }

        .transition-section p:last-child {
            margin-bottom: 0;
        }

        .links-section {
            background: #f8f9fa;
            padding: 2.5rem 2rem;
            border-radius: 10px;
            margin-top: 2rem;
            border: 1px solid #e0e0e0;
        }

        .links-section h3 {
            color: #764ba2;
            font-size: 1.75rem;
            margin-bottom: 1.25rem;
            margin-top: 2rem;
        }

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

        .links-section ul {
            list-style: none;
            column-count: 2;
            column-gap: 2rem;
            margin-bottom: 1.5rem;
        }

        .links-section li {
            break-inside: avoid;
            margin-bottom: 0.75rem;
        }

        .links-section a {
            color: #667eea;
            text-decoration: none;
            font-size: 1.05rem;
            transition: all 0.3s ease;
            display: inline-block;
            padding: 0.25rem 0;
            position: relative;
        }

        .links-section a::before {
            content: '→';
            margin-right: 0.5rem;
            transition: margin-right 0.3s ease;
        }

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

        .links-section a:hover::before {
            margin-right: 0.75rem;
        }

        footer {
            background: rgba(255, 255, 255, 0.95);
            padding: 2rem 0;
            margin-top: 3rem;
            text-align: center;
            box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
        }

        footer p {
            color: #666;
            font-size: 0.95rem;
        }

        @media (max-width: 768px) {
            h1 {
                font-size: 2rem;
            }

            .main-content {
                padding: 2rem 1.5rem;
                margin: 1rem auto;
            }

            article h2 {
                font-size: 1.75rem;
            }

            article h3 {
                font-size: 1.35rem;
            }

            .links-section ul {
                column-count: 1;
            }

            .links-section {
                padding: 1.5rem 1rem;
            }
        }

        @media (max-width: 480px) {
            h1 {
                font-size: 1.75rem;
                margin-bottom: 1.5rem;
            }

            .main-content {
                padding: 1.5rem 1rem;
                border-radius: 10px;
            }

            article h2 {
                font-size: 1.5rem;
            }

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

            .transition-section {
                padding: 1.5rem;
            }
        }