Catch the Prism Shift

16:9 horizontal YouTube thumbnail / SNS ad banner. A single realistic human model, a woman in her mid-20s with an athletic build, East Asian, short asymmetrical metallic-lilac wig, bold editorial makeup. She holds a holographic foil-effect smartphone case up to her face, peeking over it with one eye, candid energetic expression. Wears a shimmering silver-blue oversized jacket and wide-leg black trousers. Studio background: clean white contour, with diagonal bands of rainbow metallic gradient foil sweeping from bottom left to top right, leaving generous black negative space around. Lighting: bright natural daylight from a large softbox, clean highlights on foil and model's skin, hair, and jacket. Y2K playful feel. Japanese text burned in: at top center large bold title "虹色の煌めきを、手に" in white with thick black stroke. At bottom center smaller subtitle "HOLOGRAM METALLIC" in white with black stroke. Layout: model slightly to the left, facing right, diagonal foil bands behind, text centered. Photorealistic DSLR shot, 35mm, natural skin texture. No other text, no logos or watermarks.