Real talk for founders: Your pitch deck is getting read on an iPhone, not a 27-inch monitor. Most VCs scroll through decks during commutes or between meetings.

What this means technically:
- Font sizes below 24pt are unreadable
- Complex charts with 10+ data points turn into blurry messes
- Text-heavy slides become walls of gray
- Multi-column layouts break completely

The fix: Design mobile-first. One big idea per slide. Readable at 6 inches. If your deck needs zooming to read, you've already lost.