This example shows an organization graph as a force-directed network of colored nodes and links, with a few large labeled main nodes connected to smaller child nodes and tiny leaf nodes. Users can drag any node to reposition it, which restarts the simulation and applies forces to the rest of the network. The code uses `d3.forceSimulation` with `forceManyBody`, `forceLink`, and `forceCenter`, and renders with SVG circles, lines, and text. Node colors and link distances are defined in a separate data module, while drag behavior is handled via `d3.drag`.