# Visual System

Style name: Marker Board Sprint

## Core DNA

- Physical clean whiteboard surface with faint dry-marker grain, aluminum frame, black corner caps, bottom tray, colored markers, and eraser.
- Huge black hand-drawn Japanese marker lettering with visible stroke wobble and dry fill.
- Teal for plan/start, orange for action/observation, and hot pink for decision/improvement.
- Irregular marker boxes, arrows, circles, underlines, checks, footprints, bursts, and scribbles.
- Taped or pinned yellow, pink, and teal sticky notes layered around the core diagram.
- Simple hand-drawn workshop people and task/chart/calendar/magnifier/rocket/target icons.
- One dominant sketched flow, loop, checklist, roadmap, matrix, timeline, or action path.
- Large hand-drawn rounded takeaway banner, usually black text with hot-pink emphasis.

## Intended Use

実装スプリント、ワークショップ、チーム改善向け。白板、マーカー、付箋、手描き矢印で現場感を出す。

## 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.

The page must look drawn during a live working session. Preserve physical board edges, marker tray, imperfect strokes, masking tape, overlaps, and annotations. A digital diagram with a handwriting font is insufficient.

## 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.
- Vector-perfect lines, clean equal cards, fake handwriting fonts, chalkboard, notebook paper, photorealism, or 3D.
- Uncontrolled illegible scribbles; handmade texture must not reduce the required Japanese copy's readability.
