Template · stable · v1.0.0 · owner: Site system lead · contract 19 of 20 points (open: figma)
Do and don't
Do: The landing problem
Rendered by problem-section.tsOpen example: Problem section · Do: The landing problem Use the full-page example to follow page links.
Do: Cards
Rendered by problem-section.tsOpen example: Problem section · Do: Cards Use the full-page example to follow page links.
Don't: Unsourced figures
Rendered by problem-section.tsOpen example: Problem section · Don't: Unsourced figures Use the full-page example to follow page links.
Don't: Fear copy
Rendered by problem-section.tsOpen example: Problem section · Don't: Fear copy Use the full-page example to follow page links.
Rules
| Rule | Why | Check |
|---|---|---|
| Every figure has its source in the source line. | Numbers without sources erode trust. | Automated: tests/site/site-claims.spec.ts |
API
| Prop | Type | Required | Default | What it does |
|---|---|---|---|---|
id | string | Yes | Section id. | |
heading | html | Yes | The h2. | |
copy | html | Yes | The claim. | |
fig | html | Yes | The drift palette showcase. | |
figs | list | Yes | Sourced figures (n, text). | |
source | html | Yes | The source line (Caption source). | |
cards | list | Yes | Cards (title, html). | |
link | html | No | The arrow link. |
Contract details
The full contract: identity, anatomy, variants, states, tokens, layout, motion, accessibility, content, tests
Identity
| Aspect | Value |
|---|---|
| Id | problem-section |
| Layer | Templates |
| Category | section |
| Owner | Site system lead |
| Status | stable |
| Version | 1.0.0 |
| Source | apps/showcase/site/system/templates/problem-section.ts (private repository; the contract and the render function are this one module) |
| Version | Date | Change |
|---|---|---|
| 1.0.0 | 2026-10-26 | Problem section as one module: its markup moved out of the page builder (scripts/site) into the system. |
Use when
- The landing's problem, after the hero. Why: The reader must recognise the problem before the answer.
Do not use when
- For product features. Why: This template states a problem; features use Job sections.
Anatomy
| Part | What it is |
|---|---|
| root | section.l-problem.l-drift on cotton, named by its h2 |
| head | div.l-drift-head: div.l-drift-copy (h2 and copy), div.l-drift-fig (the Drift palette) |
| figs | ol.figs.l-drift-figs: b figure and span text |
| source | div.l-drift-source |
| cards | ul.l-drift-cards: h3 and p |
| link | ArrowLink |
Made of: heading, text, caption, drift-palette, arrow-link.
Used in: page-landing.
Variants
| Variant | When | Why |
|---|---|---|
| default | Wherever the page declaration places it. | One shape per job keeps pages predictable. |
States
| State | Rendered or not applicable |
|---|---|
| default | default |
| hover | Not applicable: The problem section is not interactive, so it has no hover state. |
| focus-visible | Not applicable: The problem section does not take focus; links and buttons inside it carry their own focus ring. |
| active | Not applicable: The problem section cannot be pressed. |
| disabled | Not applicable: The problem section has nothing to disable. |
| loading | Not applicable: The problem section is rendered at build time and is complete when the page loads. |
| empty | Not applicable: The problem section is not rendered without content; the builder skips it. |
| error | Not applicable: The problem section shows no data that can fail. |
| current | Not applicable: The problem section has no current item. |
| visited | Not applicable: The problem section is not a link. |
| expanded | Not applicable: The problem section does not open or close. |
Tokens
| Part | Token |
|---|---|
| root.background | --cotton |
| figure.font | --type-h2 |
| figure.mark | --madder-ink (a state mark: trouble) |
| card.rule | --rule --madder |
Layout
| Aspect | Value |
|---|---|
| breakpoints | Required review at 390, 768, 1024 and 1440 px; execution is not implied by this declaration; columns stack under 768 px; the wrap keeps a 16 px gutter on phones. |
| wrapping | Text wraps; nothing scrolls sideways. |
| textExpansion | Japanese runs 20 to 40% longer; headings break between phrases (jaBreaks) and blocks grow downwards. |
Spacing and rhythm
| Aspect | Value |
|---|---|
| internal | One padding: --section (D-SITE-005). |
| external | Full bleed. |
| rhythm | On cotton after the indigo hero (the composer puts the woven edge between them); madder appears only as marks. |
Motion
| Aspect | Value |
|---|---|
| None | No intrinsic element animation. The optional claude-entrance consumer profile may translate below-fold structure once (20px, --dur-weave, --ease-enter, --stagger); reduced motion disables it. This preserved baseline entrance is separate from element playback. |
Runtime and reuse
Render-only element; mount any registered child enhancements separately. Preserve required Site CSS, fonts, responsive and locale rules from nativeElement.
Accessibility passport
| Aspect | Value |
|---|---|
| role | region (section) named by its heading |
| name | Its h2, by aria-labelledby |
| keyboard | Links and buttons inside, in reading order. |
| focus | The --focus ring on every link and button inside. |
| screenReader | Read in source order; decorative weaving is aria-hidden. |
| contrast | Ink on cotton 14:1; text on every dye field 4.5:1 or better (checked by check-brand). |
| target | Links and buttons are 44 px tall. |
Content
| Slot | Length | Voice |
|---|---|---|
| figure | 4 characters | A sourced number |
| card | 2 sentences | One cause |
Good: “16% · of components are rebuilt by teams who could not find them (source).”
Bad: “Most teams struggle”
Japanese: Figures and sources translated; numbers unchanged.
Icons and illustrations
None: this element uses no icon or illustration of its own.
Decisions and exceptions
- D-SITE-002: A field is always followed by cotton; two fields never touch
- D-SITE-004: Colour as structure, marks as state
Usage
16 uses across the built pages (measured by npm run site:system).
Tests
| Aspect | Value |
|---|---|
| unit | tests/unit/site-system.test.ts: renders every do and don't example through the registry and checks the classes it owns |
| visual | Not yet: there are no screenshot baselines; the Library page is checked for sideways scroll at 1440 px by tests/site/system.spec.ts |
| a11y | tests/site/system.spec.ts: axe (0 serious or critical) on the element's Library page in light and dark |
| parity | scripts/site/system/check.ts: Library examples are rendered by the same render function the site imports |
Figma
not-yet: The Loom Site Figma library is the last stage of the plan; this element is not mapped yet.