A wide-angle, candid documentary photo capturing a person speaking on a large, professionally lit stage at a major tech summit. They are holding a microphone and gesturing naturally to the audience. Behind them, a massive, wall-sized LED screen is fully visible, displaying a clear full-screen presentation slide (showing only the slide content, absolutely no PowerPoint software interface, toolbars, or window borders). The slide content is professionally designed based on the theme "【speech_topic_or_outline】". In the very bottom foreground, a large number of audience heads and shoulders are visible, positioned low and blurred in the frame, completely ensuring an unobstructed view of the entire stage screen. Professional stage lighting with blue and sharp spotlights on the speaker. Shot with a high-resolution camera, with clear focus on the speaker and screen content, producing realistic film grain.