body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1, h2, h3 { color: #FF5722; margin-top: 30px; }
        h1 { font-size: 2.2em; }
        h2 { font-size: 1.8em; border-bottom: 2px solid #FF9800; }
        h3 { font-size: 1.4em; }
        .logo { font-size: 2.5em; font-weight: bold; color: #FF5722; text-shadow: 2px 2px 4px rgba(0,0,0,0.2); }
        nav { background: #FF9800; padding: 15px; margin-bottom: 20px; }
        nav a { color: white; margin: 0 15px; text-decoration: none; }
        .mobile-nav { display: none; }
        .download-btn, .login-btn { display: inline-block; padding: 12px 25px; background: #FF5722; color: white; text-decoration: none; border-radius: 5px; margin: 10px 0; }
        .image-container { margin: 20px 0; text-align: center; }
        .image-container img { max-width: 100%; height: auto; }
        footer { margin-top: 50px; padding: 20px; background: #f5f5f5; }
        @media (max-width: 768px) {
            .desktop-nav { display: none; }
            .mobile-nav { display: block; }
            body { padding: 10px; }
        }