kami-landing

Produce a single-page document in the kami (紙 / 纸) design system. The aesthetic borrows from editorial print, technical white papers, and old typewritten correspondence — the goal is good content on good paper, not modern app UI.

Design system source of truth: design-systems/kami/DESIGN.md. Read it before shipping. Tokens, type rules, the "ten invariants", and forbidden colors all live there.

What you get

A single self-contained HTML file with:

• Warm parchment canvas (#f5f4ed) — never #ffffff.
• Single chromatic accent — ink-blue (#1B365D), used on the section number, the headline accent word, the left rule of the manifesto, and the metric values. Anywhere else, ink-blue must cover ≤ 5% of the document surface area.
• Serif at one weight (500) for hierarchy — Charter (EN), TsangerJinKai02 / Source Han Serif (CN), or YuMincho (JA), selected by the language parameter. No italic anywhere.
• Tight print rhythm — line-heights 1.10–1.55, letter-spacing per language (0 for EN, 0.35px for CN, 0.02em for JA).
• Numeric stacks set in font-variant-numeric: tabular-nums so metric columns and pagination digits sit cleanly aligned.
• Depth via 1px rings + whisper shadows (0 4px 24px rgba(0,0,0,0.05)). No hard drop shadows, no neumorphism, no backdrop-filter blurs.
• Tag fills as solid hex (e.g. #E4ECF5), never rgba() — print renderers double-paint alpha tags.
• Responsive at 1280 / 980 / 768 / 560.

Page structure

1. Eyebrow row     — locale switcher · edition · version (12px sans uppercase)
2. Hero            — display headline (96–106px serif 500), tagline (21px),
                     three hero-token chips (paper-tinted)
3. Manifesto       — pull paragraph in serif 400, 20px, 1.65 LH, with
                     ink-blue left-rule and signature footer
4. Metrics row     — 3-6 cells: value (24px serif 500 ink-blue, tabular-nums),
                     label (12px serif 500 olive)
5. Chapters        — numbered (`01`, `02`, …) ink-blue serif 500 14px,
                     section title 28-32px, body 14-15px
6. Footer          — kicker word (mega serif 500), license · year · contact,
                     three-column site index in 12px serif 500

Workflow contract

1. Gather brand brief

Use AskQuestion (or equivalent) to collect the brand brief in chunks. Don't dump the whole input list on the user; ask in two rounds:

1. Identity round — name, tagline, location, edition / version, primary URL, dominant language.
2. Content round — manifesto paragraph + signature, 3-6 metric tiles, 3-5 chapter (title + lede + body) entries.

2. Pick the language stack

The language parameter controls which --serif stack is set on :root. Pick based on the dominant language of the manifesto and chapter body copy:

Inline mixed-script content is fine — the browser per-glyph fallback chain handles it. Do not chain all three families inside one font-family declaration; that dilutes character.

3. Write index.html

Output a single file with all CSS inline. Mirror the structure of example.html and use only the tokens from design-systems/kami/DESIGN.md. Do not invent new colors, weights, or font families.

Component primitives the agent can drop in (all defined in the example's <style> block):

• .eyebrow, .label — sans-serif overlines
• .metric — value + label vertical pair
• .section-num + .section-title + .section-lede
• .tag.standard, .tag.brush — solid-hex tags (one brush max per page)
• .quote — left-rule serif 500 quote
• ul.dash — en-dash bullets in ink-blue
• .code — ivory-bg, 1px-border code block
• .footer-kicker — mega serif 500 word

…