This interactive visualization displays a hierarchical sunburst chart of the Flare software package, with concentric rings representing nested categories and colored segments sized by node value. Clicking a segment animates the view to zoom into that node, expanding its children outward while receding other branches. Built with D3 v5, the example uses `d3.partition`, `d3.arc`, and `d3.hierarchy` to compute the layout, with smooth transitions driven by `transition.attrTween` and `d3.interpolate`. Data loads from the `@observablehq/flare` dataset.