Clone Disclosure Web App

I’m handing you access to the original build (https://disclosure.rivins.com/index.php — user: dhelm / pass: dhelm). It’s a ten-year-old JavaScript web application that steps users through a series of disclosures and shows the relevant wording when “Next” is clicked.

I need an exact functional and visual replica first, but branded for my new company: swap the old logo for the new one in the header only. Once the clone is in place, I must be able to update or remove any disclosure text myself without touching code—whether that’s a simple JSON/YAML file, a lightweight admin screen, or another straightforward method you suggest.

Acceptance criteria
• Pixel-matched copy of the current site, responsive as the original
• New company logo appears cleanly in the header on every screen
• Clear, non-technical way to edit or delete disclosure text (and have changes reflected instantly)
• Full source code, brief deployment steps, and a quick guide that shows me exactly where/how to change the content

The existing stack is plain JavaScript; feel free to modernize behind the scenes, but keep the look, flow, and simplicity intact.