This example shows a scatter plot of custom dataset points, with each dot colored by category using a categorical color scale. The visualization loads data from a remote CSV file and renders it with D3 v7, using `scaleLinear` for axes and `scaleOrdinal` with `schemeCategory10` for colors. It includes a reusable axis module and a legend component that maps shapes to categories using `d3.symbol`. The plot updates responsively to the window size.