• Title — a complete assertion sentence (not a topic word)
• Key points — 3-4 maximum
• Visual type — illustration / chart / diagram / icon / quote
• Path A: Illustration needed? — Yes/No. If yes, one-line description.
• Path B: Visual scene description — one paragraph describing the complete slide visual (layout + imagery + mood).

| # | Title (assertion) | Key Points | Visual Type | Illustration? |
|---|-------------------|------------|-------------|---------------|
| 1 | Cover: ... | — | Decorative | Yes: ... |
| 2 | ... | 1. ... 2. ... | Chart | No |
| 3 | ... | 1. ... 2. ... | Illustration | Yes: ... |

| # | Title (assertion) | Key Points | Visual Scene Description |
|---|-------------------|------------|--------------------------|
| 1 | Cover: ... | — | Dark gradient bg, large title centered, abstract network nodes |
| 2 | ... | 1. ... 2. ... | Split layout: text left, bar chart right, clean white bg |
| 3 | ... | 1. ... 2. ... | Full illustration: person at crossroads with floating clocks |

• Approve / adjust slide count
• Path A: Approve / adjust which slides get illustrations
• Path B: Approve / adjust visual scene descriptions
• Any content to add or remove

• "我想要XX风格"（田中一光、瑞士国际主义、包豪斯、蒙德里安...）
• "我不确定想要什么风格"
• "能给我看看不同风格的例子吗"

references/design-movements.md

1. Translate user's aesthetic language into actionable prompts
2. Build shared vocabulary ("这个方向偏田中一光" vs "那个偏构成主义")
3. Reference when designing new custom styles from scratch

references/proven-styles-gallery.md

assets/style-samples/

• Philosophy: Peanuts漫画的温暖与哲理感——简单的角色说着深刻的话，日常场景中蕴含人生智慧
• Visual world: 圆头小孩、小狗、小鸟组成一个温暖的小世界。背景极简（草地、天空、狗屋、树）。色调像泛黄的报纸漫画
• Reference: "Like a Peanuts comic strip — warm, philosophical, charming"
• Style guide:

  references/proven-styles-snoopy.md

• ⚠️ 关键经验： 不要在prompt中过度约束视觉细节（颜色比例、构图位置、角色姿势），否则会严重降低多样性。只描述情绪和内容，让AI自由发挥

• Philosophy: Japanese educational manga (学習漫画) — a character GUIDES you through the concept with reactions and drama
• Colors: Bright and warm palette, white bg with selective color panels, screen-tone gray for emphasis areas
• Ratio: 60% illustration / 30% text (in bubbles) / 10% effects
• Typography: Bold manga-style titles with impact, body text in speech/thought bubbles, onomatopoeia as decorative elements. Size contrast 3:1
• Composition: Dynamic manga panel layouts (3-5 panels per slide), character reactions drive emphasis, speed lines for energy, dramatic angles
• Visual language: Expressive anime-style characters, reaction faces (surprise, confusion, eureka!), manga effects (sweat drops, sparkles, speed lines), panel borders with varied thickness
• Reference: "Like a 'Manga Guide to Statistics' page — a character walks you through the concept, reacting with surprise and delight"

• Philosophy: Hergé's Tintin tradition — maximum information clarity through visual restraint
• Colors: White/cream (#FFFDF7) bg, black (#000000) outlines, flat saturated fills (3-5 solid colors, no gradients)
• Ratio: 70% clean bg / 20% illustration / 10% text
• Typography: Hand-lettered feel for titles, clean sans-serif for body. Speech bubbles for key quotes. Title:body = 2.5:1
• Composition: Panel-based layouts (2-4 panels per slide), sequential left-to-right reading flow, clear gutters between panels
• Visual language: Uniform-weight outlines, flat colors without shading or hatching, no gradients, precise details but zero visual noise
• Reference: "Like a Tintin page explaining a concept — every panel advances understanding, nothing is decorative"

• Philosophy: Youth media / streetwear brand aesthetic, bold and playful
• Colors: Cream (#FFF8E7) bg, black (#000000) text, color-blocking with hot pink (#FF1493) + cyan (#00CED1) + yellow (#FFD700)
• Ratio: 50% bg / 25% color blocks / 25% content
• Typography: Headlines 40-50% of slide area (typography AS the visual), thick black borders around text blocks, 10:1 size ratio vs body
• Composition: Modular color blocks with "controlled chaos", stacked asymmetric layouts, thick borders
• Visual language: Pixel-art 8-bit icons, cutout photography, speech bubbles, bold graphic surfaces
• Reference: "Like a Supreme lookbook meets a HYPEBEAST article — treats typography as graphic art"

• Philosophy: xkcd meets a professor's whiteboard — extreme minimalism forces focus on the idea itself
• Colors: White (#FFFFFF) bg, black (#000000) ink, ONE accent color for emphasis (red #FF4444 or blue #4488FF)
• Ratio: 85% white space / 10% sketch / 5% accent highlight
• Typography: Hand-drawn/handwritten feel for everything, rough uneven baselines, arrows and annotations everywhere. Key numbers can be large (60pt+)
• Composition: Freeform whiteboard layout, hand-drawn arrows connecting concepts, diagrams and stick figures, informal and alive
• Visual language: Stick figures, hand-drawn charts and graphs, wobbly lines, annotation arrows, circled keywords, equation-style layouts
• Reference: "Like an xkcd 'What If?' explanation — simple drawings that make complex ideas instantly click"

• Philosophy: Revolutionary propaganda poster — power through geometry and limited color
• Colors: Revolutionary red (#CC0000) 40% + black (#1A1A1A) 25% + cream white (#F5E6D3) 30%
• Typography: All text rotated 15-30 degrees, NO horizontal lines, bold condensed
• Composition: Diagonal wedge from bottom-left to top-right, geometric shapes growing small to large (visual crescendo)
• Visual language: NO gradients, pure flat fills + sharp edges, three-color limit, propaganda poster energy
• Reference: "Like a 1920s Rodchenko poster — power, urgency, and geometric precision"

• Philosophy: Friendly storytelling, like a TED talk visual or Airbnb pitch deck
• Colors: Warm cream (#FDF6EC) bg, dark charcoal (#3D3D3D) text, coral (#E17055) accent
• Ratio: 60% warm bg / 25% content / 15% illustration
• Typography: Headlines bold and warm, 3:1 ratio to body. Short sentences, not bullets
• Composition: Illustration occupies 40-50% of slide, text wraps around visuals, rounded shapes
• Visual language: Flat vector illustrations with warm palette, people-centric imagery, storytelling flow
• Reference: "Like a Mailchimp or Notion brand presentation — approachable and human"

references/proven-styles-gallery.md

⚠️ 以下风格 强烈建议使用 Path A（HTML→PPTX）。它们依赖精确排版、数据可视化和网格系统，AI图片生成无法达到所需精度。口腔行业分析案例已验证 Path A + Pentagram编辑风格的出色效果。

• Philosophy: Pentagram/Michael Bierut — 字体即语言，网格即思想。用极度克制的设计让数据和内容自己说话
• Colors: 奶油白(#FFFDF7) bg, 近黑(#1A1A1A) text, ONE accent color (如橙红#D4480B或品牌色)
• Ratio: 60% whitespace / 30% content / 10% accent
• Typography: 粗黑标题(28pt+) + 轻正文(10-13pt), 英文section label作为设计元素 (INSIGHT / PART 03)
• Composition: 瑞士网格系统, 2px黑色边框卡片, 精确的水平分隔线, 数据可视化内嵌
• Visual language: 极简图标, 条形图/饼图/趋势线, callout框, tag标签
• Reference: "Like a McKinsey insight report meets Monocle magazine — data-rich but editorially elegant"
• 执行路径: Path A only（HTML→PPTX）
• 实战验证: 口腔行业分析15页deck（

  _temp/口腔行业分析/slides/

  ）

• Philosophy: Fathom Information Design — 每一个像素都必须承载信息。科学严谨+设计优雅
• Colors: 白(#FFFFFF) bg, 深灰(#333) text, 海军蓝(#1A365D) primary + 一个highlight color
• Ratio: 50% charts/data / 30% text / 20% whitespace
• Typography: GT America/Graphik风格的sans-serif, 大数字(60pt+)作为视觉锚点, 精确的脚注/来源标注
• Composition: 高信息密度但不拥挤, 注释系统嵌入布局, small multiples图表阵列, 精确的时间线
• Visual language: 散点图, 热力图, timeline, 带注释的图表, 数据标签精确到小数
• Reference: "Like a Nature paper's data supplement meets a Bloomberg data feature"
• 执行路径: Path A only（HTML→PPTX）

• Philosophy: Josef Müller-Brockmann — 客观性即美。数学精确的网格系统让任何混乱的信息变得有序
• Colors: 白(#FFFFFF) bg, 黑(#000) text, 最多一个强调色
• Ratio: 70% structured grid / 20% text / 10% accent
• Typography: Akzidenz-Grotesk/Helvetica, 严格的8pt基线网格, 绝对左对齐, 字重对比(300 vs 700)
• Composition: 8列数学网格, 所有元素对齐到网格线, 绝对不允许装饰元素, 功能主义至上
• Visual language: 纯几何图形, 黑色线条表格, 精确对齐的列表, 无图标无插画
• Reference: "Like the original Swiss Style poster — timeless, rational, zero decoration"
• 执行路径: Path A only（HTML→PPTX）

• Philosophy: Build Studio — 精致的简单比复杂更难。用大量留白和微妙字重变化传达高端感
• Colors: 纯白(#FFFFFF) bg, 深灰(#2D2D2D) text, 单一accent(品牌色)极少量使用
• Ratio: 75% whitespace / 15% text / 10% accent
• Typography: 字重变化极微妙(200-600), 标题巨大(48pt+)但轻, 正文小而精(12pt), 字间距宽松
• Composition: 黄金比例构图, 元素极少, 每页只说一件事, 呼吸感优先
• Visual language: 高端产品图(如果有), 极简图标线条, 大面积纯色块, 圆角卡片
• Reference: "Like an Apple keynote meets a Celine lookbook — confident restraint"
• 执行路径: Path A（HTML→PPTX）

• Philosophy: Takram — 技术是思考的媒介。用柔和的科技感和概念原型图传达深度思考
• Colors: 暖灰(#F5F3EF) bg, 深灰(#3D3D3D) text, 鼠尾草绿(#8B9D77) accent
• Ratio: 55% warm bg / 25% diagrams / 20% text
• Typography: 圆润的sans-serif, 标题不用粗体而用大尺寸(36pt+), 正文温暖(14pt), 行高宽松(1.8)
• Composition: 柔和阴影(blur 20px+), 圆角(16px+), 概念图/流程图作为核心视觉, 卡片式布局
• Visual language: 概念原型图, 柔和渐变, 流程图即艺术, 手绘感图标, 自然色调
• Reference: "Like a Takram project page — where technology feels thoughtful, not aggressive"
• 执行路径: Path A（HTML→PPTX，配图可AI辅助生成）

design-philosophy

references/design-styles.md

• Max 2 font families (1 heading + 1 body)
• Heading: bold, personality — ≥36pt (trend: even larger, as graphic surface)
• Body: clean, readable — ≥18pt
• Chinese: system default (PingFang SC / Microsoft YaHei)
• Key principle: Typography is a DESIGN ELEMENT, not just an information container

1. Cover slide — always. Sets the visual tone.
2. Key insight slides — the "aha moment" slides benefit most.
3. Closing slide — optional but impactful.
4. Data-heavy slides — charts/diagrams instead of AI art.

nano-banana-pro

export $(grep GEMINI_API_KEY ~/.claude/.env) && \
uv run ~/.claude/skills/nano-banana-pro/scripts/generate_image.py \
  --prompt "[description]" \
  --filename "[timestamp]-slide-[N]-[name].png" \
  --resolution 2K

[Base Style]: flat vector illustration, [palette background color] background,
[accent color] highlight elements, clean minimalist aesthetic,
professional presentation style, no text in image

• Always include "no text in image" — text will be added as editable elements
• Use descriptive paragraphs, not keyword lists
• Specify hex colors explicitly
• Use "flat vector" / "flat illustration" for consistency

<!-- Side illustration (recommended) -->
<div class="left"><!-- text content --></div>
<div class="right"><img src="illustration.png" style="width: 280pt; height: 280pt;"></div>

<!-- Background illustration -->
<body style="background-image: url('illustration.png'); background-size: cover;">

1. Visual Reference — Does the prompt name a specific art style or publication? (NOT just "professional" or "modern")
2. Mood, not Layout — Does the prompt describe what the viewer should FEEL, not where elements should be PLACED?
3. Text Content — Are all texts to render listed clearly and accurately?
4. Short Enough — Is the prompt concise? Long prompts with detailed specs REDUCE diversity. Remove anything the AI can decide on its own.
5. NO Micro-Management — No hex color ratios, no typography sizes, no composition percentages, no character pose instructions.

• Always specify resolution:

  2048x1152

  (2K, 16:9) for crisp text
• Include ALL text verbatim — AI must render exact words
• 中文优先: slide上的文字一律用中文，仅保留必要英文术语
• Chinese text tip: Keep titles short (≤8 characters) for best rendering
• Use descriptive paragraphs, not keyword lists
• Generate in parallel: Run 3-5 slide generations concurrently for speed
• Consistency: The Base Style is applied to EVERY slide. It's a system, not a suggestion

export $(grep GEMINI_API_KEY ~/.claude/.env) && \
uv run ~/.claude/skills/nano-banana-pro/scripts/generate_image.py \
  --prompt "[full slide prompt]" \
  --filename "slide-[NN]-[name].png" \
  --resolution 2K

1. Text accuracy — verify all Chinese/English text rendered correctly
2. Layout — elements positioned as described
3. Style consistency — colors and design language match across slides
4. If a slide has text errors → regenerate with adjusted prompt (simplify text or shorten)

• Text readable and accurate?
• Visual style consistent across slides?
• Any slides to regenerate?

html2pptx.js

const pptxgen = require('pptxgenjs');
const html2pptx = require(process.env.HOME + '/.agents/skills/pptx/scripts/html2pptx.js');

const pptx = new pptxgen();
pptx.layout = 'LAYOUT_16x9';
await html2pptx('slide1.html', pptx);
await html2pptx('slide2.html', pptx);
await pptx.writeFile({ fileName: 'output.pptx' });

• Body dimensions:

  width: 720pt; height: 405pt

  (16:9)
• ALL text must be in

  <p>

  ,

  <h1>

  -

  <h6>

  ,

  <ul>

  ,

  <ol>

  tags
• Backgrounds/borders only on

  <div>

  elements
• No CSS gradients — pre-render as PNG with Sharp
• Use web-safe fonts only (Arial, Helvetica, Georgia, etc.)
• Images:

  <img src="illustration.png" style="width: Xpt; height: Ypt;">

ln -sf "/path/with/中文/" /tmp/ascii-path

• Any slides to adjust?
• Ready to open in Keynote/PowerPoint?

• Transitions and animations
• Speaker notes
• Brand logo placement
• Path A: Final text adjustments (editable)
• Path B: Text NOT editable — if text errors found, regenerate the slide image

• references/proven-styles-gallery.md

  — 17 tested visual styles with tiered recommendations

• references/proven-styles-snoopy.md

  — Snoopy/Peanuts style detailed per-slide templates

• references/prompt-templates.md

  — Content generation and image prompts

• references/design-principles.md

  — Full design framework, color palettes, typography

• .pptx

  files compatible with PowerPoint, Keynote, Google Slides
• Web-safe fonts for cross-platform compatibility
• AI illustrations as separate PNG files (reusable)

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