PHASE 1: VISUAL DECONSTRUCTION - **Fabric Physics:** The source garment is a heavyweight cotton-poly blend fleece (hoodie material). It possesses high structural rigidity compared to thin cotton; it will not cling tightly to musculature but will hold its own volume. The surface is matte and textured; it should absorb light rather than reflect it, with soft falloff gradients. - **Key Features:** - **Hardware:** Central zipper, vertical zippered pocket on the left chest, and horizontal zippered pocket on the right chest. - **Cuffs:** Distinctive dual-layer or contrasting light grey/beige inner cuffs that extend beyond the navy sleeve. - **Hood:** Attached hood structure which adds bulk around the neckline. - **Hem:** Ribbed elastic bottom hem that cinches slightly. PHASE 2: FIT & DRAPE SIMULATION - **Body Mapping:** - **Right Arm (Raised):** Gravity will cause the heavy fleece sleeve to slide down toward the elbow, causing significant bunching/stacking of fabric at the elbow and shoulder. The contrasting inner cuff must remain visible but may slide down the forearm away from the wrist. - **Left Arm (Relaxed):** The sleeve will hang straight with natural slight bunching above the wrist cuff due to length. - **Torso:** The hoodie should sit somewhat loosely given its "outerwear" nature, expanding the user's silhouette slightly compared to the current fitted sweater. The hood must drape naturally onto the upper back/shoulders, reacting to the forward tilt of the user's head. - **Occlusion Handling:** - **Right Hand & Cap:** The user's right hand and the beige cap he is holding are completely separate from the torso but structurally connected to the arm. The sleeve end must terminate *before* the wrist to avoid clipping into the hand. - **Neck/Beard:** The user's chin is tucked. The hoodie's collar/neckline must sit below the chin and beard line, ensuring the zipper hardware doesn't intersect the jaw. PHASE 3: ENVIRONMENT & LIGHTING - **Light Match:** The target environment features harsh, direct sunlight coming from the upper left (user's right), creating high-contrast shadows. The source image has flat indoor lighting. - **Simulation:** Render hard shadows on the right side of the hoodie (user's left side). The hood itself will cast a shadow onto the right shoulder. The fabric texture needs to show high exposure on the sun-facing side. - **Color Calibration:** The source is a deep teal/navy under warm indoor light. In the target image, the garment must reflect the cool ambient skylight in the shadows and the warm direct sunlight on highlights. The teal tone needs to be desaturated slightly to match the outdoor brightness levels. PHASE 4: IDENTITY PROTECTION - **Facial Lock:** The user's face, specifically the downward gaze, facial hair (beard/mustache), and ear, must remain pixel-perfect. - **Body Integrity:** Do not alter the user's waist width or shoulder breadth. The simulation must respect the user's current stance. The trousers, bare feet, and the red railing must remain untouched. Do not artificially "slim" the user; the hoodie should add realistic bulk.