# Simple Centered CTA

Schema: Design Details SECTION.md v3.2
Website: Exa
Source: https://exa.ai/
Source section IDs: gap-92f0821a-6725-7259
Status: AI analysed; vocabulary promotion is automated

## Builder's note

What makes it work:
- A single centered column holds a headline, a subhead and one button, so the eye has only one path to follow.
- The large serif headline (about 63px, tight tracking) contrasts with a smaller, muted sans subhead, which sets the hierarchy without extra decoration.
- The solid dark button on a white canvas has strong contrast and a clear purpose, and the empty space around it makes it the obvious action.

What a screenshot can't show:
- The recording showed no motion, so hover, press and entrance behavior are unknown.
- Section padding, line height and exact gaps between the elements weren't measured.

Borrow: Reduce a closing call to action to one message and one button, and let generous empty space give it weight.
Leave alone: Don't copy the Arizona serif headline (a commercial typeface; a free high-contrast serif such as Fraunces is a reasonable stand-in) or the exact muted warm grey and blue palette.

## Classification

- Type: cta
- Layout: Centered headline, subheadline, and a single solid button surrounded by abundant whitespace.
- Styles: minimal, typographic
- Confidence: 95%

## Purpose and structure

A minimal, centered call to action section before the footer.

Visual signature: Extremely clean, ample white space focusing attention solely on the central text and black button.

## Components

- headline
- subheadline
- button

## Typography

- Display: Arizona — 63.2px 400
- Heading: Arizona — 41.6px 400
- Body: ABCDiatype — 17px 400
- Mono: GeistMono — 12px 400

## Functional palette

- Canvas: canvas #FFFFFF
- Text: text #111827
- Muted-Text: muted text #58544E
- Accent: accent #0035D0
- Surface: surface #181815
- Primary-Action: primary action #0137E1

## Motion evidence

- No section-specific authored motion was established.

## Section quality

Overall: 56.35/100 (Competent)
Scored coverage: 85%

- Typography: 60 — Large serif display headline (Arizona, 63.2px, tight tracking) paired with smaller muted sans-serif subhead creates a clean, legible contrast typical of a competent minimal CTA. The pairing is clean but unremarkable in craft or rhythm beyond a standard hero-style hierarchy. Next tier: No distinctive type treatment, scale progression, or hierarchy detail beyond a standard large-headline/small-subhead pairing; nothing pushes past a familiar polished default.
- Composition: 58 — Centered layout with generous whitespace and a single clear focal column; restrained and balanced, but extremely generic — headline, subhead, button stacked with no additional structural interest, asymmetry, or layered depth. Next tier: Lacks any compositional device (asymmetry, layering, secondary visual anchor) that would elevate it beyond a textbook centered CTA template.
- Motion: not_assessed — No motion data supplied; motion_moments empty and no timestamped evidence given. Next tier: Requires timestamped visible motion evidence to assess.
- Content: 55 — Headline and subhead clearly state value proposition and CTA button is purposeful and legible; content serves its function but offers no unique framing or supporting proof element. Next tier: No differentiating content element (e.g. proof point, visual accent, secondary detail) ties the copy to the product beyond generic marketing language.
- Originality: 45 — This is an extremely common 'centered headline + subhead + button' CTA pattern seen across countless SaaS sites with no distinguishing visual idea. Next tier: Needs a distinctive structural or visual idea beyond the standard centered CTA template to move past familiar/generic territory.
- Adaptability: 62 — Simple, isolated structure (headline, subhead, button) with flat background and solid-fill button makes skin and content trivially separable from layout. Next tier: Lack of distinctive visual system (e.g. custom button style, decorative accents) limits transferable value beyond basic structure.

Strengths:
- Clear singular focal hierarchy with no visual clutter
- Legible serif/sans type pairing with adequate contrast
- Generous whitespace keeps attention on the CTA button

Weaknesses:
- Highly generic centered CTA pattern with no distinguishing visual idea
- No secondary visual element or texture to add interest or brand specificity
- Composition is static and purely symmetrical with no depth or layering
- No visible motion evidence to assess dynamic behavior

Why it does not reach the next tier: The section executes a familiar centered CTA competently but introduces no original structural, typographic, or visual device; every element (headline, subhead, button) follows a template seen across the industry, keeping it at a polished-but-ordinary level rather than memorable.

## Adaptation guidance

- Effort: Low
- Guidance: Swap headline/subhead copy and button label; retain centered stack and whitespace proportions. Font family can be substituted with any clean serif/sans pairing without loss of structure.

What transfers:
- Centered headline/subhead/button stacking structure
- Generous whitespace-driven focal hierarchy
- Solid-fill button treatment

Dependencies:
- Specific serif display font (Arizona) for headline impact
- Brand color system for button and background canvas

## Living vocabulary

- No reusable vocabulary candidates were supported by this section.

Only terms with status `active` enter the public taxonomy. Deferred and proposed terms remain available to later AI passes; rejected terms remain as provenance so they are not repeatedly reinvented.

## Provenance and limitations

- Section boundaries and naming: Gemini Pro visual observation
- Motion observations: Gemini Pro direct-video analysis
- Quality judgment: Claude
- Exact design facts: browser/CSS extraction at website scope
- Rubric: Design Details section rubric 3.2 (Typography 20%, Composition 20%, Motion 15%, Content 15%, Originality 15%, Adaptability 15%)
- No motion evidence available to assess animated behavior
- No deterministic spacing/sizing data for whitespace margins to verify composition precisely

## Usage guidance

Use this section as design evidence. Create an original implementation; do not reproduce the source copy, assets, or proprietary composition exactly.

## Build blueprint v3.2

### Purpose and classification

- Canonical type: cta
- Source type: cta
- Structure: centered single-column
- Layout: Centered headline, subheadline, and a single solid button surrounded by abundant whitespace.
- Styles: minimal, typographic
- Components: headline, subheadline, button
- Purpose: A minimal, centered call to action section before the footer.
- Visual signature: Extremely clean, ample white space focusing attention solely on the central text and black button.
- Place on the page: 10 of 10, after Testimonials (`exa-ai:testimonials-video-grid`)

### Crop and composition

- Deterministic crop dimensions are unavailable.
- Guidance: Use a narrow central reading axis and deliberate scale contrast rather than adding unnecessary side content.

### Exact typography evidence

The sectionScale values were measured inside this crop. The siteRoles values explain how those faces function across the source website; they must not replace section measurements.

```json
{
  "sectionScale": [],
  "siteRoles": [
    {
      "role": "display",
      "size": "63.2px",
      "family": "Arizona",
      "source": "computed",
      "traits": "Regular",
      "weight": "400",
      "evidence": "font-2: computed CSS at 1440×1000; AI role: Large serif heading (Arizona, 63.2px) used for the main hero title.",
      "sampleId": "font-2",
      "confidence": 1,
      "lineHeight": "45.5px",
      "letterSpacing": "-1.9px"
    },
    {
      "role": "heading",
      "size": "41.6px",
      "family": "Arizona",
      "source": "computed",
      "traits": "Regular",
      "weight": "400",
      "evidence": "font-5: computed CSS at 1440×1000; AI role: Secondary serif headings (Arizona, 41.6px) used to introduce main sections.",
      "sampleId": "font-5",
      "confidence": 0.95,
      "lineHeight": "45.8px",
      "letterSpacing": "-1px"
    },
    {
      "role": "body",
      "size": "17px",
      "family": "ABCDiatype",
      "source": "computed",
      "traits": "Regular",
      "weight": "400",
      "evidence": "font-10: computed CSS at 1440×1000; AI role: Primary sans-serif body text (ABCDiatype, 17px) used for descriptions and explanatory paragraphs.",
      "sampleId": "font-10",
      "confidence": 0.9,
      "lineHeight": "24.7px",
      "letterSpacing": "-0.3px"
    },
    {
      "role": "mono",
      "size": "12px",
      "family": "GeistMono",
      "source": "computed",
      "traits": "Regular",
      "weight": "400",
      "evidence": "font-28: computed CSS at 1440×1000; AI role: Monospace font (GeistMono, 12px) used extensively for code snippets and data formatting.",
      "sampleId": "font-28",
      "confidence": 0.95,
      "lineHeight": "16.8px",
      "letterSpacing": "-0.2px"
    }
  ]
}
```

### Exact color evidence

The section samples record where each computed value was used. Functional roles come from the website-level classifier and remain separate.

```json
{
  "sectionUsage": [],
  "functionalPalette": [
    {
      "hex": "#FFFFFF",
      "name": "canvas",
      "role": "canvas",
      "source": "computed",
      "evidence": "color-1: computed rgb(255, 255, 255); AI role: Predominant white background color across most sections of the page.",
      "sampleId": "color-1",
      "confidence": 0.95
    },
    {
      "hex": "#111827",
      "name": "text",
      "role": "text",
      "source": "computed",
      "evidence": "color-8: computed rgb(17, 24, 39); AI role: Dark text color used for primary headings and important copy.",
      "sampleId": "color-8",
      "confidence": 0.9
    },
    {
      "hex": "#58544E",
      "name": "muted text",
      "role": "muted-text",
      "source": "computed",
      "evidence": "color-10: computed rgb(88, 84, 78); AI role: Lighter grey text used for secondary descriptions and support text.",
      "sampleId": "color-10",
      "confidence": 0.85
    },
    {
      "hex": "#0035D0",
      "name": "accent",
      "role": "accent",
      "source": "computed",
      "evidence": "color-12: computed rgb(0, 53, 208); AI role: Blue color used for highlighting specific elements like the Exa bar in the charts.",
      "sampleId": "color-12",
      "confidence": 0.85
    },
    {
      "hex": "#181815",
      "name": "surface",
      "role": "surface",
      "source": "computed",
      "evidence": "color-3: computed rgb(24, 24, 21); AI role: Dark grey/black background used for contrasting sections like 'Benchmarks' and 'Enterprise-grade security'.",
      "sampleId": "color-3",
      "confidence": 0.8
    },
    {
      "hex": "#0137E1",
      "name": "primary action",
      "role": "primary-action",
      "source": "computed",
      "evidence": "color-4: computed rgb(1, 55, 225); AI role: Vibrant blue background used for the large footer block.",
      "sampleId": "color-4",
      "confidence": 0.8
    }
  ]
}
```

### Design tokens

```json
{
  "radius": "Small to medium radii applied to UI components like the search bar, 'Try API for free' button, and individual data cards.",
  "density": "Balanced density; high density in data-heavy areas (charts, code snippets) contrasted with low density in hero and transitional sections.",
  "evidence": "Observation of component layouts, typography styles (fonts 1-40), and color applications (colors 1-48) across the provided viewport crops.",
  "borderStyle": "Thin, subtle borders (color-28, color-47) used to define cards and UI elements without overwhelming the minimal design.",
  "buttonStyle": "Solid fill for primary actions (black 'Sign up', 'Try API for free'), with lighter grey (color-36) or outline styles for secondary actions ('Contact sales', 'Read customer stories').",
  "cornerStyle": "Slightly rounded corners (border-radius visible on buttons, input fields, and feature cards), leaning towards a clean, modern aesthetic.",
  "contentWidth": "Centered content constrained within a comfortable reading width, with wide margins on larger viewports.",
  "spacingRhythm": "Generous vertical spacing between major sections, utilizing significant whitespace to separate dense data blocks and imagery."
}
```

### Reconstruction specification

This is the implementation contract for the captured desktop viewport. Prefer section-specific facts here over general website descriptions.

- Root container was not deterministically isolated.
- Layout containers: 0; cards/surfaces: 0; media elements: 0; browser animations: 0.

#### Container, grid, and spacing

```json
{
  "viewport": {
    "width": null,
    "captureBounds": null
  },
  "container": null,
  "spacing": {
    "observedGapsPx": [],
    "representativeContentWidthsPx": []
  },
  "columns": []
}
```

#### Cards and surfaces

```json
{
  "cards": [],
  "surfaces": null
}
```

#### Media treatment

```json
[]
```

#### Browser-exposed animation parameters

```json
[]
```

### Measured geometry, surfaces, media, and animation

These raw values come from the saved element map and computed styles. Empty arrays mean the fact was not captured; they are not permission to invent source values.

```json
null
```

### Observed motion

No timestamped authored motion is attached. Use only restrained baseline transitions.

The browser animation records above are deterministic parameters captured from active browser animations. The timestamped observations describe what Gemini saw in the video. Treat them as complementary evidence. When either source is empty or they conflict, state the uncertainty instead of inventing timing or easing.

### Responsive contract

- Measured viewport: unknownpx wide.
- Mobile/tablet values: not measured by this section evidence unless a separate capture is explicitly listed.
- Preserve hierarchy and sequence; collapse simultaneous columns only where needed, maintain media aspect ratios, and verify touch targets and text wrapping at target breakpoints.

### Structure versus visual skin

- Preserve: content hierarchy, layout relationships, section rhythm, interaction purpose.
- Adapt: brand colors, font family, copy, imagery, icons, decorative details.
- Rule: Preserve the observed design logic while creating original branding, copy, assets, and implementation details.

### Adaptation and dependencies

- Effort: low
- What transfers: Centered headline/subhead/button stacking structure; Generous whitespace-driven focal hierarchy; Solid-fill button treatment
- Dependencies: Specific serif display font (Arizona) for headline impact; Brand color system for button and background canvas
- Guidance: Swap headline/subhead copy and button label; retain centered stack and whitespace proportions. Font family can be substituted with any clean serif/sans pairing without loss of structure.

### Evidence readiness

- Coverage: 4/7
- Can build: Yes
- Missing facts: section-specific computed typography and color samples; section-level geometry, surfaces, media treatment, and animation parameters; timestamped authored motion
- Warning: Buildable with adaptations for these unsupported facts: section-specific computed typography and color samples; section-level geometry, surfaces, media treatment, and animation parameters; timestamped authored motion.

### Agent implementation prompt

Create an original cta section inspired by the design evidence titled “Simple Centered CTA”.

Purpose: A minimal, centered call to action section before the footer.

Structure: centered single-column. Source layout label: Centered headline, subheadline, and a single solid button surrounded by abundant whitespace.. Use a narrow central reading axis and deliberate scale contrast rather than adding unnecessary side content.

Visual signature to preserve at the pattern level: Extremely clean, ample white space focusing attention solely on the central text and black button.

Components: headline, subheadline, button.

Style direction: minimal, typographic.

No deterministic crop dimensions were attached.

Typography evidence: {"role":"display","size":"63.2px","family":"Arizona","source":"computed","traits":"Regular","weight":"400","evidence":"font-2: computed CSS at 1440×1000; AI role: Large serif heading (Arizona, 63.2px) used for the main hero title.","sampleId":"font-2","confidence":1,"lineHeight":"45.5px","letterSpacing":"-1.9px"} {"role":"heading","size":"41.6px","family":"Arizona","source":"computed","traits":"Regular","weight":"400","evidence":"font-5: computed CSS at 1440×1000; AI role: Secondary serif headings (Arizona, 41.6px) used to introduce main sections.","sampleId":"font-5","confidence":0.95,"lineHeight":"45.8px","letterSpacing":"-1px"} {"role":"body","size":"17px","family":"ABCDiatype","source":"computed","traits":"Regular","weight":"400","evidence":"font-10: computed CSS at 1440×1000; AI role: Primary sans-serif body text (ABCDiatype, 17px) used for descriptions and explanatory paragraphs.","sampleId":"font-10","confidence":0.9,"lineHeight":"24.7px","letterSpacing":"-0.3px"} {"role":"mono","size":"12px","family":"GeistMono","source":"computed","traits":"Regular","weight":"400","evidence":"font-28: computed CSS at 1440×1000; AI role: Monospace font (GeistMono, 12px) used extensively for code snippets and data formatting.","sampleId":"font-28","confidence":0.95,"lineHeight":"16.8px","letterSpacing":"-0.2px"}

Color evidence: {"hex":"#FFFFFF","name":"canvas","role":"canvas","source":"computed","evidence":"color-1: computed rgb(255, 255, 255); AI role: Predominant white background color across most sections of the page.","sampleId":"color-1","confidence":0.95} {"hex":"#111827","name":"text","role":"text","source":"computed","evidence":"color-8: computed rgb(17, 24, 39); AI role: Dark text color used for primary headings and important copy.","sampleId":"color-8","confidence":0.9} {"hex":"#58544E","name":"muted text","role":"muted-text","source":"computed","evidence":"color-10: computed rgb(88, 84, 78); AI role: Lighter grey text used for secondary descriptions and support text.","sampleId":"color-10","confidence":0.85} {"hex":"#0035D0","name":"accent","role":"accent","source":"computed","evidence":"color-12: computed rgb(0, 53, 208); AI role: Blue color used for highlighting specific elements like the Exa bar in the charts.","sampleId":"color-12","confidence":0.85} {"hex":"#181815","name":"surface","role":"surface","source":"computed","evidence":"color-3: computed rgb(24, 24, 21); AI role: Dark grey/black background used for contrasting sections like 'Benchmarks' and 'Enterprise-grade security'.","sampleId":"color-3","confidence":0.8} {"hex":"#0137E1","name":"primary action","role":"primary-action","source":"computed","evidence":"color-4: computed rgb(1, 55, 225); AI role: Vibrant blue background used for the large footer block.","sampleId":"color-4","confidence":0.8}

No section-bounded typography samples were measured.

No section-bounded color samples were measured.

No saved element-map measurements were available; do not invent exact source spacing, card, media, or animation values.

Do not invent signature motion. Use only restrained baseline transitions if the product needs them.

Transfer these principles: Centered headline/subhead/button stacking structure; Generous whitespace-driven focal hierarchy; Solid-fill button treatment.

Dependencies: Specific serif display font (Arizona) for headline impact; Brand color system for button and background canvas.

Adaptation guidance: Swap headline/subhead copy and button label; retain centered stack and whitespace proportions. Font family can be substituted with any clean serif/sans pairing without loss of structure.

Use new copy, imagery, branding, and implementation details. Do not reproduce the source website or its proprietary assets.