This force-directed graph visualization displays the hierarchical structure of the email-Eu-core network, grouping nodes into color-coded communities. Users can drill down into individual clusters to see their subgraphs and drill back up to the full view. The implementation uses D3’s `forceSimulation` for layout, along with `fetch` to load SNAP-format data from GitHub, and custom JavaScript functions for random walk-based node embedding and k-means clustering. Rendered as scalable vector graphics, it supports zoom and drag interactions.