构建一个Lovable克隆Web应用

Create "Clonable": a complete clone of the AI Web app builder Lovable. Starting with the exact landing page like lovable. Make sure to use the exact colors and logo from lovable. Then design and exact authentication page like lovable. Add a proper navigation between the landing page and authentication page. Then design the main page which has a preview area on the right and the chat area on the left.