This zoomable sunburst visualizes vulnerability data from a hierarchical JSON file, with arcs colored by top-level category and sized by value. Clicking an arc zooms into that segment, while a breadcrumb trail shows the current path. Built with D3 v5, it uses `d3.partition` for layout, `d3.arc` for rendering, and `transition.attrTween` to animate between views. Labels rotate and fade based on visibility, and hover updates breadcrumbs.