A horizontal dendrogram visualizes a nested hierarchy of numeric names, with nodes positioned by depth and connected by curved links. The visualization uses D3 v5's `tree` layout, `hierarchy`, and `linkHorizontal` generators to compute positions and draw SVG paths. Text labels scale in font size based on node depth, and the entire graph supports pan-and-zoom interaction via D3's `zoom` behavior. Data comes from a local JSON file, and the SVG rendering applies a mint-green stroke to all links.