This example shows a reusable D3 scatter plot of product sales versus profit, with each circle representing an item and axes scaled to the data. It fetches CSV data from a GitHub Gist, falling back to embedded data if the request fails. The visualization is built with `d3.scaleLinear`, `d3.extent`, `d3.axisLeft`, and `d3.axisBottom`, and drawn as SVG circles. The plot is sized to the window and styled with the Share Tech font, using a minimal, full-screen layout.