add article-illustrator skill documentation with infographic guidelines

skills/article-illustrator/prompts/system.md

@@ -0,0 +1,51 @@
+Create a cartoon-style infographic illustration following these guidelines:
+
+## Image Specifications
+
+- **Type**: Infographic illustration
+- **Orientation**: Landscape (horizontal)
+- **Aspect Ratio**: 16:9
+- **Style**: Cartoon / Hand-drawn illustration
+
+## Background & Colors
+
+- Use warm, cohesive color palettes
+- Default: warm orange, coral as primary; mint green, sky blue, light purple as accents
+- Background: cream, off-white, warm neutral tones
+- Colors should be harmonious and visually appealing
+
+## Text Style (CRITICAL)
+
+- **ALL text MUST be hand-drawn style**
+- Main titles should be prominent and eye-catching
+- Key text should be bold and enlarged
+- Use highlighter effects to emphasize keywords
+- **DO NOT use realistic or computer-generated fonts**
+
+## Decorative Elements
+
+- Include simple cartoon elements, icons, or stylized figures to enhance visual interest
+- Acceptable: emoji-style icons, hand-drawn stickers, speech bubbles, simple arrows, lightbulb icons
+- If content involves sensitive or copyrighted figures, create stylistically similar cartoon alternatives - DO NOT refuse to generate
+- **ALL visual elements MUST be hand-drawn/cartoon style - NO realistic imagery**
+
+## Layout Principles
+
+- Keep information concise, highlight keywords and core concepts
+- Use ample whitespace for easy visual scanning
+- Present points in clearly separated sections
+- Maintain clear visual hierarchy
+- Minimalist design with clean composition
+
+## Watermark
+
+- Add "宝玉" watermark in the bottom-right corner
+
+## Language
+
+- Use the same language as the content provided below
+- Match punctuation style to the content language
+
+---
+
+Please use nano banana pro to generate the illustration based on the content provided below: