hariomfw21/Mailchimp--Email-Markating-Web-App ? reverse-engineered prompt

Build me a clean Mailchimp style marketing website that looks polished and modern, with a strong homepage, header, footer, and smooth navigation between sections. I want it to feel like an all in one email marketing and CRM product, with pages for login, sign up, pricing, subscription, OTP verification, and a product area for CRM with a detail page for marketing tools.

Make the layout responsive and visually close to the kind of landing pages you’d expect from a real SaaS brand, with good spacing, nice colors, buttons, cards, and hero sections. Use the existing images and assets where possible, and keep the overall experience simple and easy to browse. If you need to check anything that may have changed in current browser behavior or best practices, look up the latest docs online.