Transformer encoder, neural network, artificial intelligence, futuristic background, metallic surfaces, glowing blue lines, circuits, wires, microchips, motherboard, CPU, GPU, RAM, futuristic lab, robotics, machine learning, deep learning, natural language processing, language model, pre-training, fine-tuning, masked language modeling, next sentence prediction, sentiment analysis, question answering, text classification, information retrieval, 3D composition, neon lights, futuristic ambiance, high-tech equipment, sleek design.