A static SVG treemap built with plain HTML and CSS, styled with large text and a red color palette. The visualization uses nested rectangles to represent hierarchical data, with layered `<rect>` elements manually positioned via absolute coordinates. Rendered entirely through declarative SVG markup rather than D3 data joins, it serves as a basic exercise in geometric composition and color coding. The code includes D3 v7 via CDN but does not invoke any D3 APIs.