Transfert de Style d'Illustration Lo-Fi Nostalgique

Transform the reference illustration into [a professional Lo-Fi art style], strictly maintaining the original composition and character. Apply warm, slightly muted pastel tones, fine film grain, soft focus, gentle light fading, and a subtle vignette to evoke a nostalgic, chill atmosphere. Soft natural light gently envelops the character, casting warm highlights and soft shadows on the skin and hair, delivering a relaxed, comfortable, and nostalgic Lo-Fi mood.