This interactive force-directed network visualizes the hierarchical relationships among programming languages, paradigms, families, and a root node. Node colors and radii encode type via `d3.scaleOrdinal`, while parent-child links are parsed from a CSV gist. The visualization uses `d3.forceSimulation` for layout and renders animated SVG elements in a dark-themed canvas. A fixed HTML legend overlays the chart, and the code is built with D3 v7.