Create a vertical 8K ultra-high-end commercial poster (aspect ratio 4:5), blending bold commercial layout with surrealist photorealism. Core concept: "Your Coffee, A World of Its Own", with composition logic aligned to the provided reference image paradigm. The background features a large deep Starbucks-green rounded rectangle as the base. Behind the subject sits a cropped oversized bold "STAR" logotype, serving as the visual skeleton of the frame to deliver striking typographic impact. The focal subject is a young white woman captured in a foreground-dominant perspective, holding a Starbucks paper cup toward the camera. The perspective strictly matches the reference image, with a calm, subtly curious expression. The interior of the cup reveals a surreal miniature diorama: coffee liquid cascades as a tiny waterfall, a fully realized miniature forest ecosystem grows from the cup, and thin mist rises gently from the grove. Steam from the cup rim morphs into fluffy clouds in the air above, creating a seamless organic transition between the product and this fantastical micro-world. The frame is accented with sparkle icons, soft fog layers, and floating leaf elements to heighten the surrealist atmosphere and add visual depth. The typography hierarchy is clear and polished: a pill-shaped badge at the top reads "Starbucks Coffee", with smaller supporting text below reading "Signature Roast". A feature strip runs along the bottom, listing attributes in sequence: "Ethically Sourced", "Fresh Brewed", "Rich Aroma", and "Crafted Daily". The overall visual is cohesive and premium, with clear, ordered information delivery.