# Visual System

Style name: Chalkboard Professor

## Core DNA

deep chalkboard green, off-white chalk, chalk dust, formula ghosts, hand-drawn arrows

## Intended Use

基礎講義、研修、大学風レクチャー向け。黒板、チョーク、手書き図解、矢印で“先生が教えている”質感を作る。

## Tone

Make the slide feel like a complete paid-course slide system, not a loose image prompt. It should be clear enough for a lecture, strong enough for thumbnails, and visually consistent across a deck.

## Required Page Architecture

Every output should have:

- One dominant headline.
- One short subline.
- One central metaphor, scene, or diagram.
- Exactly 3 visible label elements unless the user explicitly asks otherwise.
- One bottom takeaway strip, footer, or closing sentence area.

## Style Preservation

Match `assets/reference-slides/style-reference.png` and `samples/contact_sheet.png`.
Preserve the palette, density, line quality, object treatment, typography weight, and visual hierarchy implied by those samples.
Do not copy only the cover slide. Slides 02-10 are also authoritative finished examples of this style's layout system.
If the output looks like a neutral white business template with only the colors changed, it fails.

## Avoid

- Generic PowerPoint templates.
- Plain white cards with small icons only.
- Fake URLs, fake QR codes, fake logos, fake dates, fake prices, fake social media UI.
- Tiny unreadable Japanese text.
- Extra decorative microcopy unrelated to the user's content.
- Copying a real brand, creator, app, or character.
