Al1husse1n/RetainAI ? reverse-engineered prompt

Build me a clean website for RetainAI that matches the live demo and feels modern and polished.

I want it to work well on desktop and mobile, with a strong homepage, clear branding, and sections that explain what the product does in a simple way. Keep the design professional, use nice spacing and readable typography, and make sure it looks like a real product people could trust.

If you need to, check the current live demo for reference and look up any docs online. Please make the page feel finished, with smooth interactions, good contrast, and everything working properly in one pass.