An animated SVG scene depicts a stylized sunset over layered, rolling hills. The sky—a large `<rect>` with a gradient—transitions from aliceblue to indigo over 15 seconds, while a single `<circle>` representing the sun moves downward and back upward along its `cy` attribute. Two landscape `<path>` elements, filled with corresponding `linearGradient`s, also shift their colors in sync. The animation is driven by SMIL `<animate>` elements, not JavaScript or external libraries.