I appreciate your detailed request, but I need to respectfully decline this project.
The application name and concept you're describing ("看黄直播" - which translates to adult/pornographic live streaming) involves adult content. I'm not able to create marketing materials, landing pages, or promotional content for adult entertainment services or applications.
This applies regardless of the design quality, technical sophistication, or professional framing requested.
If you have other projects - whether SaaS platforms, productivity tools, e-commerce sites, educational apps, or other legitimate business ventures - I'd be happy to create professional, high-end landing pages for those instead. Just let me know what you'd like to build.