Explain why a mobile-responsive landing page may still fail to deliver an optimal user experience, directly harming campaign conversion rates.

A mobile-responsive landing page, while adapting its layout to fit smaller screens, may still fail to deliver an optimal user experience and harm conversion rates if it doesn't consider mobile-specific usability factors and user intent. Mobile responsiveness primarily addresses visual adaptation, ensuring content reflows and scales appropriately on different devices. However, an optimal mobile experience goes beyond simply resizing elements. Factors like page load speed, touch target size, form field optimization, and the relevance of content to mobile users' specific needs are crucial. For example, a page that loads slowly on a mobile device will lead to high bounce rates, even if it looks visually appealing. Similarly, small and difficult-to-tap buttons or form fields can frustrate users and prevent them from completing a conversion. Moreover, mobile users often have different goals and needs than desktop users. They might be looking for quick information, directions, or immediate assistance. If a mobile-responsive page is simply a scaled-down version of the desktop site, it might not provide the information or functionality that mobile users are seeking, leading to lower conversion rates. Therefore, a truly optimized mobile landing page requires careful consideration of mobile usability principles, user intent, and performance, not just visual responsiveness.