This example shows the distribution of phone brand counts as a pie chart with labeled percentage slices and a color-coded legend. Using the D3.js library, it loads CSV data from a GitHub repository, calculates proportional arc segments via `d3.pie`, and renders them with `d3.arc`. Each slice displays the brand name and computed percentage, while the legend maps brands to their assigned colors. The chart is drawn as an SVG element, centered on an 800x500 canvas with a light background.