This example shows a radar chart that visualizes survey responses across four attributes—Community, Self-expression, Discovery, and Agency—for twelve social media platforms. The data is fetched from a remote CSV file and processed using `d3.csvParse` and `d3.group` to compute mean scores per platform. The visualization supports interactive highlighting: hovering over a radar shape or a legend item emphasizes that platform while dimming others, using CSS classes and D3 event handlers. Clicking legend items toggles platforms on and off. The chart is built with `d3.scaleLinear` for axes, custom axis and label generation, and a manually constructed legend from a color mapping object.