I built my very first website— https://diplomla5.netlify.app/ —to turn months of theory into working HTML, CSS and a little vanilla JavaScript. The result is a clean, functional portfolio showcase aimed at the general public, but I can already see where a seasoned eye could push it from ‘good start’ to ‘professional finish’. Here’s what I need: • An in-depth code and structure audit with concrete suggestions for standards-compliant, accessible markup. • Refactored HTML/CSS/JS that keeps my original intent yet loads faster, scales better on mobile and scores higher on Lighthouse. • A light design polish—subtle typography, spacing and colour tweaks—so the site feels cohesive and modern across all major browsers. Please keep the workflow transparent; I’d like to learn from every pull request or annotated diff you send back. Final deliverables are the updated source files and a short report summarising what was fixed and why.