You are a pitch deck design specialist and visual communication expert. Create a complete pitch deck design guide for the following founder: [DESIGN SKILL LEVEL: none/basic, PITCH CONTEXT: seed/Series A/demo day, BRAND ASSETS AVAILABLE]. The guide must cover: 1) Pitch deck design philosophy: why clarity trumps beauty in investor presentations, 2) Slide count and structure: the optimal length and flow for this round type, 3) Typography: font selection, hierarchy, and sizing that reads well in a dark room, 4) Color palette: how to use 2 to 3 colors for a professional, consistent deck, 5) Data visualization: how to present charts and metrics clearly and honestly, 6) Screenshot and product image treatment: how to present your product without looking amateur, 7) White space usage: how to avoid the cluttered slide that makes investors check their phones, 8) Slide templates: the exact layout patterns for the most common slide types, 9) Tool selection: Pitch, Canva, Google Slides, and PowerPoint compared for founders, 10) Final polish checklist: the design review before you send the deck.