Hyper-realistic, 8k UHD, masterpiece, highly detailed, sharp focus, cinematic lighting, explicit sexual intercourse, on a bed, silhouette of a slender blonde woman on all fours and a muscular dark-skinned man with curly hair kneeling behind her on the bed, doggy-style position, deep contrast, stark silhouette definition, penetration, cock entering vagina, small conical breasts hanging down, visible breast contours, sweating, glistening bodies, curves and muscle definition, backlight through a large window, warm atmospheric light, rim lighting, glistening skin, erotic mood, intimate composition, focus on genitals and point of contact, moody shadows, high contrast, photorealistic skin textures, detailed anatomy