Title: Ringworld — The Geometry of Saturn
Exact creative prompt: Create a spacious planetary portrait of Saturn on ink navy with sparse stars. Center a shaded, banded gas giant within layered elliptical ring planes made with repeating radial gradients and a Cassini-like gap. Use an elegant centered serif headline above, small scientific callouts around the planet and a three-part instrument dock below. A viewing-angle slider should tilt the ring plane interactively. Label the artwork stylized and not to scale. Responsive, self-contained offline HTML5, inline CSS and JavaScript only.
Description: A quiet astronomical portrait exploring how perspective changes the appearance of a ringed world.
Major visual techniques: Banded spherical gradients; front/back ring layering; radial ring texture and masks; perspective transforms; sparse star field; centered space typography.
Intended interaction model: Adjust the apparent ring-plane inclination with a labeled slider.