A small multiples pie chart displays transaction payment methods and their statuses, with labels and leader lines connecting slices to text. The visualization updates smoothly via `d3.transition` when a payment method label is clicked. Built with D3 v6, it uses `d3.pie`, `d3.arc`, `d3.scaleOrdinal`, and `d3.rollup` to group and aggregate data loaded from a remote API. A spectral color scale encodes categories, and SVG renders the animated chart.