Key principles of slide design: clear information hierarchy, minimal text, 6x6 rule (6 points per slide and close to 6 words per point). Font size 24–32 pt for title, 18–24 pt for text. Contrast ratio of 4.5:1 or higher, color palette restricted to 3 colors. Strong alignment and spacing, sufficient white space. Visual elements high quality and in 16:9 format. Graphics and icons provide simplicity, continuity, and clarity