body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        .mobile-nav { display: none; background: #2c3e50; color: white; padding: 10px; text-align: center; cursor: pointer; }
        .logo { font-size: 24px; font-weight: bold; color: #e74c3c; text-transform: uppercase; }
        nav { background: #2c3e50; padding: 15px; margin-bottom: 30px; }
        nav ul { list-style: none; padding: 0; display: flex; justify-content: space-around; }
        nav ul li a { color: white; text-decoration: none; }
        h1 { color: #e74c3c; border-bottom: 2px solid #3498db; padding-bottom: 10px; }
        h2 { color: #3498db; margin-top: 30px; }
        h3 { color: #2ecc71; }
        .download-btn, .login-btn { display: inline-block; background: #e74c3c; color: white; padding: 12px 25px; margin: 15px 0; text-decoration: none; border-radius: 5px; }
        .image-container { text-align: center; margin: 25px 0; }
        .image-container img { max-width: 100%; height: auto; border: 1px solid #ddd; }
        footer { margin-top: 50px; padding: 20px; background: #2c3e50; color: white; }
        @media (max-width: 768px) {
            nav ul { flex-direction: column; text-align: center; }
            .mobile-nav { display: block; }
            nav { display: none; }
        }