{"portrait_prompt":{"subject":{"description":"Based on <User Portrait>, a candid everyday portrait in Sara Masuda inspired film photography language, emotionally alive but unforced, intimate, airy, and gently nostalgic, captured in an ordinary moment with real environment presence","features":{"hair":"preserve the user-uploaded hairstyle, texture, loose strands, and natural movement","eyes":"preserve the user-uploaded eye shape and gaze direction, keep the gaze soft and observant","expression":"natural half-smile, candid laugh, or quiet absent-minded look, never over-posed"
