單色沉思男性肖像（美術風格）

{ "image_type": "photographic portrait", "orientation": "vertical", "composition": { "framing": "tight medium close-up", "crop": "subject cropped at mid-torso with head and hand dominating frame", "angle": "three-quarter profile", "camera_position": "slightly above eye level", "subject_placement": "subject positioned slightly off-center to the right", "negative_space": "minimal, concentrated on left background" }, "subject": { "gender_presentation": "male", "approximate_age_range": "late 20s to mid 30s", "pose": "head tilted downward, hand raised to temple in contemplative gesture", "facial_expression": "pensive, introspective, serious", "gaze_direction": "downward, unfocused", "hair": { "style": "short, tousled, textured", "tone": "dark" }, "facial_hair": { "type": "short stubble beard", "density": "medium" }, "c