This pie chart visualizes the top 10 countries by total medals at the Tokyo Olympics, with each slice sized proportionally to a country’s medal count. The chart uses D3 v5 with SVG rendering, employing `d3.pie`, `d3.arc`, and `d3.scaleOrdinal` for encoding data into colored slices with labeled values and a legend. Data is fetched as CSV from a GitHub gist using D3’s `csv` method. Each slice displays its numeric total, while the legend pairs country names with their medal tallies.