補光

Use Fill Light while preserving the selected key-lit baseline: retain exactly the existing upper camera-left key light, its brightness on lit surfaces, the current wall light pattern and the original cast-shadow direction and outline. Add only a weaker broad neutral fill from near camera-right to lift the existing dark side of the face, inside the coat and the dark trouser folds. The shadow-side details should become noticeably more readable but stay darker than the key-lit side. Do not brighten the key, move or create any cast shadow, change wall light patterns, add rim light or flatten all contrast.