Subject: At the center of the frame is a transparent holographic padlock with a circuit board texture, placed on a chip, presenting a tech effect of cyber security. Scene: Dark blue tech background with binary code data streams, creating an overall atmosphere of digital security protection. Style: Realistic tech style 3D rendering, with holographic projection and circuit texture, a visual style commonly used in cyber security and data encryption scenarios. Color tone: Mainly dark blue and cool blue, with red highlight accents on the padlock to highlight a sense of tech and security warning atmosphere. Lighting: The padlock and chip self-illuminate with a glow effect, and the light and shadow layers of the circuit board and data streams are rich, enhancing the tech atmosphere. Composition: Centrally symmetrical square composition, with the padlock and chip located in the center of the frame, the background circuits extending to the four directions, making the subject prominent and full of tech tension. Use case: Suitable for PPT backgrounds with cyber security / data encryption themes, corporate information security promotion posters, tech finance industry illustrations, cyber security conference materials, and information protection product visuals.