body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1, h2, h3 { color: #2c3e50; }
        h1 { border-bottom: 3px solid #e74c3c; padding-bottom: 10px; }
        .nav-bar { background: #e74c3c; color: white; padding: 15px; position: sticky; top: 0; display: flex; justify-content: space-between; align-items: center; }
        .nav-bar a { color: white; text-decoration: none; margin: 0 10px; }
        .mobile-toggle { display: none; }
        .download-btn, .login-btn { background: #27ae60; color: white; padding: 10px 20px; border-radius: 5px; text-decoration: none; display: inline-block; margin: 10px 0; }
        .image-container { text-align: center; margin: 20px 0; }
        img { max-width: 100%; height: auto; }
        @media (max-width: 768px) {
            .nav-links { display: none; }
            .mobile-toggle { display: block; }
            .nav-bar.active .nav-links { display: block; }
        }