This radial tree visualizes the hierarchical structure of Buddha's teachings, from core concepts like the Four Noble Truths down to individual, simpler precepts. It uses D3.js v7 with the `d3.hierarchy` and `d3.cluster` APIs to compute the circular layout. The SVG rendering supports panning and zooming via the `d3.zoom` module, while node and text sizes adjust based on depth to maintain readability. The data is loaded from a JSON file.