shajith23/sketch-portfolio ? reverse-engineered prompt

Build me an immersive portfolio website that feels like a hand drawn sketchbook brought to life in 3D. I want visitors to be able to explore a few different rooms or scenes, move between sections like Home, About, Projects, Skills, and Contact, and have it all feel smooth and playful rather than like a basic scrolling site.

Please make the page feel artistic, with sketch style visuals, animated transitions, and some subtle ambient sound that changes as people move around. Add a simple map or quick navigation so users can jump to different areas easily, and make sure it works well on desktop and mobile. It should also load intelligently so slower devices still run smoothly, with lower quality effects when needed.

Use current best practices and look up any docs online if you need to. Keep the experience polished, interactive, and ready to deploy as a production portfolio.