zen-browser/www ? reverse-engineered prompt

Build me the Zen Browser website homepage, with a clean modern look that matches a privacy focused, polished browser brand.

It should be built with Astro, TypeScript, and Tailwind, and feel fast, responsive, and easy to maintain. I want a strong hero section, clear calls to action, feature highlights, and sections that explain what Zen Browser is about in a simple, friendly way. Make the page look great on mobile and desktop, and keep the design minimal but premium.

Please use the existing assets and content structure if they are already there, and make sure the site is ready to deploy as a public homepage. If you need current implementation details or best practices, look up the latest docs online. Also keep the code clean and organized so it would be easy for the team to contribute to later.