An animated SVG scene cycles through a sunrise-to-nightfall color transition, depicting a sun setting behind layered silhouetted landscapes. Gradients shift between aliceblue, steelblue, indigo, and midnightblue over a 15-second loop, with the sun's vertical position animating downward and back. The visualization uses native SVG elements—`rect`, `circle`, `path`, and defined `radialGradient` and `linearGradient`—with SMIL animations via `<animate>` tags, all embedded directly in the HTML without external libraries.