This example shows a minimal SVG visualization of a single dark circle positioned near the upper-left corner of the canvas. The circle is rendered using an inline SVG element with a fixed `cx`, `cy`, and `r` attribute, though the radius is large relative to the viewport. The code uses plain HTML and SVG markup within an `index.html` file, demonstrating a basic structure for embedding vector graphics without additional JavaScript or CSS. It serves as a starting point for more complex visualizations, following the pattern of the HTML Starter template.