---
name: html-ppt-zhangzara-cartesian
description: |
Cartesian — Quiet warm-neutral palette with classical Playfair serifs; tasteful and unhurried. Anything that should feel quiet, considered, and grown-up: investment theses, white papers, advisory work, longform research, gallery / cultural decks.
triggers:
- "cartesian"
- "zhangzara-cartesian"
- "quiet"
- "considered"
- "classical"
- "literary"
- "investment thesis"
- "white paper"
- "html deck"
- "html slides"
- "zhangzara"
od:
mode: deck
scenario: marketing
upstream: "https://github.com/zarazhangrui/beautiful-html-templates/tree/main/templates/cartesian"
upstream_license: MIT
preview:
type: html
entry: example.html
design_system:
requires: false
speaker_notes: false
animations: false
---
# Cartesian
> Quiet warm-neutral palette with classical Playfair serifs; tasteful and unhurried.
A single self-contained HTML deck — typography, palette, decorative system,
and slide vocabulary are all tuned together. Mixing layouts across templates
breaks the system; stay inside this one.
## At a glance
- **Scheme:** light
- **Formality:** high
- **Density:** low
- **Slides in demo:** 10
## Best for
Anything that should feel quiet, considered, and grown-up: investment theses, white papers, advisory work, longform research, gallery / cultural decks. Also a strong choice for editorial features, founder reflections, or any deck where restraint is the message — including across tech and finance.
## Avoid for
Decks that need visual heat, multiple accents, or a sense of urgency — the warm-neutral palette is intentionally low-energy.
## Workflow
1. **Clone `example.html`** into the user's workspace as the working file.
2. **Replace placeholder content** with the user's real headlines, body copy,
numbers, names, dates, and section labels. Match existing dimensions when
swapping image placeholders.
3. **Preserve the design system.** Never substitute fonts, recolor the palette,
restructure the layout grid, or strip decorative elements (corner brackets,
paper grain, geometric shapes, illustrated SVGs). They are part of the
identity.
4. **Adjust deck length by duplicating layouts.** If the user has more content
than the demo holds, duplicate an existing slide of the most appropriate
layout. If less, drop slides from the bottom. Update page-number labels.
5. **Designing missing layouts:** if a slide needs a layout the template
doesn't have, design it from scratch using the same fonts, palette,
decorative vocabulary, spacing rhythm, and component grammar — never bail
to a different template.
6. **Keep the navigation runtime as shipped.** If the deck ships an
`assets/deck-stage.js` or inline keyboard handler, leave it intact.
## Output contract
Emit between `` tags:
```
...
```
## Source & license
Vendored from upstream MIT-licensed
[`zarazhangrui/beautiful-html-templates`](https://github.com/zarazhangrui/beautiful-html-templates/tree/main/templates/cartesian).
The full upstream MIT license text — including the original copyright notice — ships in this skill at
[`LICENSE`](./LICENSE) and must be redistributed alongside any copy of `example.html`,
`template.json`, or any vendored `assets/` runtime. See `template.json` for the upstream metadata snapshot.