This interactive sunburst diagram visualizes the hierarchical structure of the Flare dataset, allowing users to click on any segment to zoom in and explore nested categories. Built with D3 v5, the visualization uses an arc partition layout with a radial layout, where the inner ring represents the root and outer rings show deeper levels. The code leverages `d3.partition`, `d3.hierarchy`, and `d3.arc` for geometry, and employs `d3.interpolateRainbow` for color coding. Animations are handled via `d3.transition` and `transition.attrTween`, smoothly interpolating arc positions and labels during zoom transitions.