Mockup photo réaliste de sweatshirt noir stylo à personnaliser

Photo-real product mockup of a black sweatshirt with "stylo à personnaliser" logo printed at classic embroidery. Mockup style: minimalist white background, sage + ivory logo palette. Studio-grade photography, sharp focus, natural fabric texture / mug ceramic / paper grain. Magazine-quality merch shot, no watermarks. Logo is generic placeholder typography — no real-brand marks. Realistic product proportions. Target search intent (rendered visually, no on-image text): "stylo à personnaliser" (fr).