Create a retro-style digital artwork with a dark grey background. The centerpiece features four human profile silhouettes facing each other in pairs, outlined in cream with gradient-filled interiors that transition from dark to light. These profiles are set within a rounded abstract shape filled with a vibrant gradient of orange, pink, and yellow. In the center of the composition, include a detailed diamond shape with a small, intricate floral motif, using cream and gradient colors that match the surrounding hues. Ensure smooth curves, bold color transitions, and a vintage, 1970s-inspired aesthetic. High resolution with soft shading and clean, balanced design elements.  --ar 4:5