手绘涂鸦风插画Prompt

A professional technical hand-drawn illustration about: ${topic}. 

This image must be a PORTRAIT (3:4 aspect ratio) to allow for a tall, detailed vertical flow.



VISUAL STYLE RULES (STRICT):

1. Drawing Style: Hand-drawn doodle, marker sketch, thick black ink outlines. No 3D, no realistic textures.

2. Background: Solid plain white (#FFFFFF).

3. Color Palette: Minimalist. ONLY Black, White, and soft "Pale Yellow" (#FFF9C4) for highlights.

4. Icons: Simple, recognizable doodles (e.g., CPU, Database, Browser, Person, Cog).

5. Text: Hand-written font style. Technical terms and code in light-yellow highlight boxes.



LAYOUT & LOGIC (FLEXIBLE VERTICAL FLOW):

- DO NOT force a strict left-vs-right split. Instead, design a "Problem vs. Solution" comparison that extends VERTICALLY down the page.

- The layout should be optimized based on the content to maximize clarity.

- Examples:

  - For sequential steps: Use a vertical chain (Problem top, Solution bottom).

  - For system architecture: Use a top-down stack comparison.

  - Only use a partial left-vs-right if the content is very simple and balance allows.

- In all layouts, ensure the "Problem/Old/Slow" state uses stressed icons and chaotic arrows, while the "Solution/New/Optimized" state uses calm, organized, and streamlined vertical flows with specific code/logic.



BRANDING & COPYRIGHT (MANDATORY):

- In the bottom-right corner, neatly hand-write the signature: "© TiHUBB". 

- The signature should be subtle, small, and integrate perfectly with the doodle style.