aradhyapuneeth/aradhyapuneeth.github.io ? reverse-engineered prompt

Build me a personal portfolio website for a senior DevOps engineer that feels like a polished production dashboard, not a normal resume site.

I want a single page with a strong hero section, an animated intro, a short about me section, a career timeline, a skills or toolchain area, certifications, and an easy way to contact me. The overall vibe should be technical, clean, and a little playful, with terminal and git inspired touches, but still readable and professional.

Please make it work as a simple static site I can host on GitHub Pages, using plain HTML, CSS, and JavaScript with no framework. Include light and dark themes, smooth scrolling, subtle motion, and responsive behavior on mobile. If you need current browser or accessibility details, look up the latest docs online. Keep everything fast, well organized, and easy for me to edit later.