Product-style VFX reference sheet: a single sleek modern magic portal floating in the center, on a plain flat neutral light-grey studio background, nothing else in the image, no room, no floor, no people, no text. The portal: a tall vertical oval about the height of an adult, a razor-thin ring of white-cyan light, inside it a membrane of rippling liquid glass, and through it a deep turquoise underwater world with sunbeams, coral and glowing jellyfish. Soft cyan glow and faint caustic light around it. Premium, minimal, photoreal, high-end film VFX.
