A professional, simple, and elegant logo for 'WhiteLeaf Building Group.' The logo should feature a minimalist design with a stylized white leaf as the central element. The leaf should be clean and sleek, with smooth curves or geometric precision. The company name 'WhiteLeaf Building Group' should be in a refined, modern font, using a muted green or gray color to complement the white leaf. The overall design should exude professionalism, quality, and a connection to nature, with a focus on simplicity and elegance suitable for a high-end residential construction company.