* {
            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: #2c3e50;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
        }

        header {
            background: rgba(255, 255, 255, 0.98);
            box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(10px);
        }

        .header-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 1.5rem 2rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .main-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem;
        }

        .content-wrapper {
            background: #ffffff;
            border-radius: 20px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
            overflow: hidden;
        }

        .content-header {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 3rem 2rem;
            text-align: center;
        }

        h1 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
        }

        article {
            padding: 3rem 2rem;
        }

        article h2 {
            color: #667eea;
            font-size: 1.8rem;
            margin: 2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 3px solid #667eea;
        }

        article h3 {
            color: #764ba2;
            font-size: 1.4rem;
            margin: 1.5rem 0 1rem;
        }

        article p {
            margin: 1rem 0;
            font-size: 1.05rem;
            line-height: 1.8;
            color: #555;
        }

        .transition-section {
            padding: 2rem;
            background: linear-gradient(to right, #f8f9fa, #e9ecef);
            border-top: 1px solid #dee2e6;
            border-bottom: 1px solid #dee2e6;
        }

        .transition-section p {
            font-size: 1.05rem;
            line-height: 1.8;
            color: #555;
            margin: 1rem 0;
        }

        .links-section {
            padding: 3rem 2rem;
            background: #f8f9fa;
        }

        .links-section h3 {
            color: #667eea;
            font-size: 1.5rem;
            margin: 2rem 0 1rem;
            padding-left: 1rem;
            border-left: 4px solid #667eea;
        }

        .links-section ul {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
            margin: 1rem 0 2rem;
            padding: 0;
        }

        .links-section li {
            background: white;
            padding: 0.8rem 1.2rem;
            border-radius: 8px;
            transition: all 0.3s ease;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }

        .links-section li:hover {
            transform: translateX(5px);
            box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
        }

        .links-section a {
            color: #667eea;
            text-decoration: none;
            font-weight: 500;
            display: block;
        }

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

        footer {
            background: rgba(255, 255, 255, 0.95);
            padding: 2rem;
            margin-top: 2rem;
            text-align: center;
            color: #666;
            box-shadow: 0 -2px 20px rgba(0, 0, 0, 0.1);
        }

        @media (max-width: 768px) {
            .main-container {
                padding: 1rem;
            }

            h1 {
                font-size: 2rem;
            }

            article {
                padding: 2rem 1.5rem;
            }

            article h2 {
                font-size: 1.5rem;
            }

            article h3 {
                font-size: 1.2rem;
            }

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

            .header-content {
                padding: 1rem;
            }

            .logo {
                font-size: 1.5rem;
            }

            .content-header {
                padding: 2rem 1rem;
            }

            .links-section {
                padding: 2rem 1rem;
            }

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

        @media (max-width: 480px) {
            h1 {
                font-size: 1.6rem;
            }

            article h2 {
                font-size: 1.3rem;
            }

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