I need a very lightweight website focused solely on a Contact page. The page must clearly display my phone number and look neat on both desktop and mobile screens. A clean HTML/CSS build is fine, but I am open to using a minimalist CMS or a framework like React or Next.js if it speeds things up and keeps future expansion easy. Responsiveness, quick load time, and tidy code matter more to me than flashy design. If you can hand over the finished files (or deploy them to a basic hosting account) and walk me through any edits I might need to make later, that would be perfect.