An ultra-realistic, cinematic half-body portrait of Idun, the radiant Norse Goddess of Youth and Renewal. She stands in an eternal twilight, her body surrounded by a swirling mist that glows with a soft, golden light. In her hands, she cradles one of her famous golden apples, which emits a brilliant, pulsating light that seems to push back the encroaching darkness. Idun's youthful face is lit with a serene smile, her eyes sparkling with the light of eternal spring. Her hair, the color of ripening wheat, flows around her in impossible curls, each strand seemingly lit from within and leaving trails of light as it moves. She wears a dress woven from new spring leaves and apple blossoms, each leaf edge rimmed with a soft, bioluminescent glow. Orbiting around her are ghostly images of the other Norse gods, each visibly aging until they bite into spectral versions of her apples, instantly rejuvenating in a burst of golden light. The background transitions from the gnarled roots of Yggdrasil below to its vibrant canopy above, with Idun standing at the threshold between death and rebirth. Technical Details: Rendered in a style that combines the Pre-Raphaelite romanticism of John William Waterhouse, the luminous nature paintings of Thomas Kinkade, and the fantasy realism of Brian Froud. The lighting is ethereal and multi-layered, with the primary source being the golden apple in Idun's hands, complemented by her inner glow and the bioluminescent elements of her dress. Advanced particle systems create the swirling, glowing mist and the rejuvenation effects of the spectral apples. A custom "living light" shader gives Idun's hair and dress their unique, internally lit quality. The Yggdrasil background uses advanced tree rendering techniques to create a sense of immense scale and age.