Main subject: Curved observation platform on top of a skyscraper, dark blue textured helipad ground, city skyline shrouded in mist, cluster of towering buildings. Scene: Looking out from the curved rooftop platform, foreground is modern hard helipad, distant view is urban buildings in morning fog and evening haze, transitioning to a light purple-to-blue gradient sky. Style: Minimalist futuristic urban realistic style, quiet and high-end, full of atmosphere. Color scheme: Dominated by dark blue ground, paired with foggy gray city outlines, gradient sky from light purple to light blue, cool and elegant tones. Lighting: Soft gradient daylight, mist softening building outlines, overall hazy and soft light, clean layers. Composition: Curved platform as foreground framing, line of sight extending outward to the city skyline, strong sense of spatial depth, open and grand composition. Use case: High-end business speech background, city landmark promotion, sci-fi concept scene, high-end luxury visual base map for corporate branding.