Isometric Smart City

Vertical premium 3D architecture poster image, miniature isometric smart city floating above a matte black platform, tiny modular towers, sky bridges, rooftop gardens, glowing blue data lanes, transparent transit tubes, clean dark studio with soft overhead grid light, restrained emerald, cobalt, graphite, and white palette, precise toy-like scale, architectural visualization quality, crisp shadows, polished reflections, high-detail 3D render, balanced poster composition with generous top negative space, no text, no logo, no watermark.