body { font-family: 'Arial', sans-serif; line-height: 1.6; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; }
        h1 { color: #e74c3c; font-size: 2.5em; }
        h2 { color: #2980b9; margin-top: 30px; }
        h3 { color: #27ae60; }
        .logo { font-size: 2em; font-weight: bold; color: #e74c3c; text-decoration: none; }
        .mobile-menu { display: none; }
        .download-btn, .login-btn { display: inline-block; padding: 10px 20px; background: #e74c3c; color: white; margin: 10px 0; text-decoration: none; border-radius: 5px; }
        .download-btn:hover, .login-btn:hover { background: #c0392b; }
        img { max-width: 100%; height: auto; margin: 20px 0; }
        @media (max-width: 768px) {
            .desktop-menu { display: none; }
            .mobile-menu { display: block; background: #333; color: white; padding: 10px; text-align: center; }
            .mobile-menu button { background: none; border: none; color: white; font-size: 1.2em; }
            body { padding: 10px; }
        }