[Input Data]
- Overall Title: {argument name="main title" default="3-Step Flowchart for Night Shift Introduction"}
- Step 1: Title "{argument name="step 1 title" default="Day Shift Mastery"}" / Period "{step1Period}" / Description "{step1Desc}"
- Step 2: Title "{step2Title}" / Period "{step2Period}" / Description "{step2Desc}"
- Step 3: Title "{step3Title}" / Period "{step3Period}" / Description "{step3Desc}"
- Color Theme: {argument name="color theme" default="green"}

[Structure and Layout Specifications]
- Style: A clean and friendly 3-step flowchart illustration suitable for Japanese business slides, educational manuals, or internal documents. 16:9 landscape slide configuration.
- Background: Clean off-white or solid white background.
- Top Title:
  - Place "Figure 3" or a step badge in the upper left, and to its right, draw a large Japanese main title "{mainTitle}" in a bold, easy-to-read Gothic font. Place a small, clean abstract logo mark at the right edge.
- Step Card Arrangement:
  - Three beautiful rectangular cards arranged side-by-side. Placed in order from left to right, connected by thick arrows. Each card border is color-coded neatly according to the color theme ({colorTheme}).
- Card 1 (Left) Interior:
  - Draw a circular badge "1" and the Japanese title "{step1Title}" prominently. Below that, a capsule label saying "{step1Period}".
  - In the center, place an illustration of a Japanese woman with a gentle hand-drawn touch taking notes, and a window showing the sun.
  - At the bottom, place the Japanese description "{step1Desc}".
- Card 2 (Center) Interior:
  - Draw a circular badge "2" and the Japanese title "{step2Title}" prominently. Below that, a capsule label saying "{step2Period}".
  - In the center, place an illustration of two Japanese women with a flashlight, night sky, and buildings.
  - At the bottom, place the Japanese description "{step2Desc}".
- Card 3 (Right) Interior:
  - Draw a circular badge "3" and the Japanese title "{step3Title}" prominently. Below that, a capsule label saying "{step3Period}".
  - In the center, place an illustration of the night sky and crescent moon, and a Japanese woman smiling with a victory pose.
  - At the bottom, place the Japanese description "{step3Desc}".

[Quality and Font Specifications]
- Simple, clean 2D illustration, flat design, crisp clear line art.
- All text must be accurately drawn in readable Japanese fonts (Gothic) without spelling errors.
- Exclude all 3D effects, shadows, laptop mockup backgrounds, or camera tilt; display the flat diagram itself across the entire screen.

- Aspect Ratio: --ar 16:9

A prompt for creating a clean, friendly Japanese business slide featuring a 3-step process flowchart with cute illustrations and professional layout. 来源许可/权利说明：聚合仓库上游许可（请按各条目来源遵循）