Use case: stylized-concept. Asset type: isolated atmospheric cloud sprite for a premium city-building strategy game inspired by SimCity 4. Generate one wide, beautiful cluster of soft white and pearl-grey high-altitude cumulus cloud wisps viewed from above, as if hovering over an isometric game neighborhood. Elegant volumetric contours, softly sunlit warm-white tops, subtle cool-blue undersides, semi-transparent feathered irregular fringes with small gaps, detailed yet restrained. Two or three connected airy masses forming an elongated uneven oval; full cloud entirely inside the image with generous transparent margins. It must be a genuinely transparent RGBA cutout with NO scenery, NO sky color, NO ground, NO rectangular background, NO checkerboard, NO cast ground shadow, NO text. Do not turn it into thick smoke or storm clouds. Soft realistic game illustration, not flat vector and not cartoon. Wide landscape output.