This interactive sunburst visualization displays the hierarchical Flare dataset as concentric arcs, with clickable parent nodes that smoothly zoom into deeper levels of the hierarchy. Built with D3 v5, it renders arcs using `d3.arc` and computes the layout with `d3.partition` on a hierarchy created by `d3.hierarchy`. Animations are driven by `transition.attrTween`, interpolating between arc positions with `d3.interpolate`, while labels fade and rotate using `labelTransform` based on visible arc bounds. The example loads the Flare JSON data via the Observable standard library's `require` function and uses a `d3.scaleOrdinal` with an interpolated rainbow palette.