This stacked bar chart visualizes the distribution of sales amounts for various product subcategories, segmented by consumer, corporate, and home office institutions. The chart displays total sales per subcategory as stacked segments, with each color representing a different segment. Hovering over a segment reveals its specific sales value. The visualization is built with D3.js, using the `d3.layout.stack` for the stacked layout and `d3.legend.color` for the interactive color legend.