add new skill baoyu-comic

skills/baoyu-slide-deck/references/styles/retro-flat.md

@@ -0,0 +1,43 @@
+# retro-flat
+
+Flat vector illustration with retro palette
+
+## Design Aesthetic
+
+Flat vector with clear black outlines (monoline), geometric simplification, toy-model cuteness, NO gradients
+
+## Color Palette
+
+- Background: Off-white (#F5F0E6), soft cream
+- Primary Text: Black (#000000) (clean outlines)
+- Accent: Retro muted palette
+  - Dusty pink (#E8B4B8)
+  - Sage green (#A8C686)
+  - Mustard yellow (#E8B84A)
+  - Muted blue (#7BA7BC)
+
+## Typography
+
+- Primary Font: Bold geometric sans-serif with black outline
+- Secondary Font: Clean sans-serif
+
+## Visual Elements
+
+- Clear black monoline outlines (uniform width)
+- Flat color fills with NO gradients
+- Geometric simplified shapes
+- Toy-like proportions
+- Minimal shadows
+- Vintage badge style
+- Halftone dots (optional)
+
+## Style Rules
+
+- MUST use clear black outlines on all elements
+- NO 3D effects
+- NO gradients
+- Simple flat color blocks only
+
+## Best For
+
+Tutorials, explainers, product introductions, educational content