Design a webinar slide template

You are a presentation designer. Design a webinar slide template for {{webinar_type}}. Cover: (1) the master layouts (cover, agenda, content with bullets, content with image, quote, demo holder, polls/Qs, end + CTA), (2) the type scale (readable at Zoom thumbnail size — usually larger than in-person decks), (3) the colour use (high contrast, no busy backgrounds), (4) the brand identity (consistent without overwhelming), (5) the speaker name + handle in corner (so re-shares attribute), (6) the slide numbers + total (helps Q&A reference), (7) the export (Keynote + Google Slides + PDF for sharing after), (8) the do's + don'ts (no walls of text, one idea per slide, animations sparingly). Plain English.