Create an illustration of three children in a library, surrounded by books and computers as they explore the mysteries of a mysterious glowing quantum silver bracelet. The children are Max, Tom and Lisa and they look focused and determined. In the background, the shadowy figure of a man in a dark coat can be seen watching them from a distance. The scene should convey a sense of intrigue and tension, with the library setting creating a calm, tense atmosphere. --cref <https://s.mj.run/FxDM7JWAiec> --cw 100  --ar 2:3