Create a refined design for minimal high-luxury 3D ad brand campaign visual poster for Prince Biscuits. The centerpiece is a surreal giant golden biscuit castle constructed entirely from signature Prince biscuits. The biscuit structure should feel imaginative and unexpected while instantly recognizable as the brand's signature product. Apply lifelike biscuit textures, embossed details, cream layers, and delicate crumb elements to generate a high-end visual metaphor of a kingdom built from Prince biscuits. Place a tiny human character beside the giant biscuit castle, actively exploring and climbing its towers with a small ladder. The miniature figure should generate a powerful sense of scale, storytelling, and playful curiosity while maintaining a polished, sophisticated layout. Apply Prince's signature red and golden-yellow color palette as the backdrop, with a smooth gradient and plenty of negative space. Keep the layout centered and balanced. Position the Prince Biscuits logo at the top of the visual poster. Place the brand slogan "The Taste of Happiness" elegantly at the bottom. Aesthetic requirements: Minimalist, intelligent, visually striking, high-end ad brand campaign visual design, extremely finely detailed 3D rendering, photo-real biscuit textures, commercial brand campaign quality, high-luxury product photography, gentle studio illumination, delicate shadows, polished backdrop, contemporary fashion-ad aesthetic, highly shareable social media brand campaign. Format: Vertical visual poster, 9:16 ratio. Rendering aesthetic: Ultra-lifelike CGI, Behance-worthy ad brand campaign presentation, high-end food branding, film-like illumination, high-luxury commercial artwork, launch-ready marketing visual.