A compact food-and-category network uses D3 v7's `d3.forceSimulation`, `d3.forceLink`, `d3.forceManyBody`, and `d3.forceCenter` to position six colored nodes (three categories in pink, three foods in green) connected by five gray links. The force-directed layout runs on an SVG canvas, with draggable circles via `d3.drag` and text labels updated on each simulation tick. The data is a hardcoded set of nodes and links, illustrating simple relationships between items and their categories.