This example shows a three-layer conceptual network of the Mahabharata, connecting clans, characters, and key events. It uses `d3.forceSimulation` with `forceLink`, `forceManyBody`, and `forceCenter` to position nodes, while `d3.drag` enables interactive movement. Nodes and links are rendered as SVG circles and lines, colored by a `scaleOrdinal` mapping levels to distinct hues. Labels appear beneath each node, and the layout updates dynamically on each simulation tick.