body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #e74c3c; text-align: center; }
        h2 { color: #2980b9; border-bottom: 2px solid #3498db; padding-bottom: 5px; }
        h3 { color: #27ae60; }
        .mobile-nav { display: none; background: #34495e; color: white; padding: 10px; text-align: center; cursor: pointer; }
        nav { background: #2c3e50; padding: 15px; }
        nav a { color: white; margin: 0 15px; text-decoration: none; }
        .logo { font-size: 28px; font-weight: bold; color: #e74c3c; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        .download-btn, .login-btn { display: inline-block; padding: 12px 25px; background: #e74c3c; color: white; text-decoration: none; border-radius: 5px; margin: 10px 0; }
        .cta-section { text-align: center; margin: 30px 0; }
        @media (max-width: 768px) {
            nav { display: none; }
            .mobile-nav { display: block; }
            .show-nav { display: block; }
        }