Mégacité de Science-Fiction sous Dôme et Soleil Artificiel

A grand vertical sci-fi concept art scene of [artificial sun and city]: an immense futuristic metropolis inside a colossal transparent megastructure dome, viewed from a high balcony. At the top center, a blinding artificial sun embedded in concentric circular mechanical rings radiates warm golden light downward through atmospheric haze. Below lies a vast terraformed landscape featuring turquoise lakes, misty waterfalls, snow-dusted mountain ridges, and layered clouds, fully integrated with dense metallic city infrastructure. The composition is framed by a cylindrical tower on the left edge and a massive glass-and-steel skyscraper on the right edge with stacked balconies and glowing interior rooms. In the foreground, two small human figures stand on a curved observation deck at the lower left, gazing across the vista for scale. Multiple elevated monorail lines and sleek tube transit capsules cross the lower third, accompanied by circular landing platforms, spires, communication antennae, and glowing illuminated windows. Rendered with [golden sunrise illumination], volumetric light rays, reflective chrome and glass surfaces, intricate hard-surface details, cinematic depth, painterly realism, and a serene utopian atmosphere. Color palette of warm gold, amber, polished silver, teal water, and misty blue-gray shadows. No text, no watermarks.