{"id":"LGT-013","domain":"lighting","priority":78,"hard":true,"logic":"all","when":[{"path":"lighting.chroma_background_uneven","op":"eq","value":true}],"then":[{"op":"add_flag","value":"CHROMA_UNEVEN"},{"op":"append","path":"requirements","value":"even_screen_and_separate_subject"}],"rationale":"Uneven backing increases keying and spill failures.","tags":["vfx"],"category":"Lighting"}