# Centered serif headline with logo strip — Section Design Reference

Schema: Design Details SECTION.md v3.2
Source: https://www.tribe.ai/
Website: Tribe AI
Section ID: 69240b23-8441-4d14-82e7-c4a079b8fcb3
Design Details page: https://designdetails.io/sections/tribe-ai--home--hero-69240b23
Status: deterministic evidence captured; editorial AI review pending

## Purpose

This is a hero section on the Home page. Use the attached crop and measured browser facts to reconstruct its composition. Do not infer unmeasured source values.

## Layout

1200×1000px root; block

## Visual signature

minimal, typographic, corporate, data-visualization-inspired, scroll-narrative treatment at 1440×904px. The crop spans 96–1000px of a 12712px page.

## Components

- Navigation Bar
- Hero
- Logo Strip
- Editorial Card
- Primary Button
- Outline Button
- Footer
- Feature Card
- Sticky Scroll Section
- Stacked Card Reveal
- Animated Graphic Background

## Evidence note

The geometry, typography, colors, media, and animation parameters below come from saved HTML/CSS/browser evidence when present. Website-level roles are supplied separately. Editorial section judgment remains pending unless the MCP resolves this source ID to a promoted canonical record.

## Build blueprint v3.2

### Purpose and classification

- Canonical type: hero
- Source type: hero
- Structure: 1200×1000px root; block
- Layout: 1200×1000px root; block
- Styles: minimal, typographic, corporate, data-visualization-inspired, scroll-narrative
- Components: Navigation Bar, Hero, Logo Strip, Editorial Card, Primary Button, Outline Button, Footer, Feature Card, Sticky Scroll Section, Stacked Card Reveal, Animated Graphic Background
- Purpose: hero section from the Home page of Tribe AI.
- Visual signature: rgba(0, 0, 0, 0) with 1200×1000px root; block. Inspect the crop for image and content hierarchy.
- Place on the page: 2 of 7, after Navigation (`6b7a1f86-96ce-40ae-9b59-e3b622fb638c`), before Other (`b71c3c3f-0bec-4bf7-b4d4-481244651ca9`)

### Crop and composition

- Crop: 1440×904px; aspect ratio 1.593:1
- Page bounds: 96–1000px of 12712px
- Guidance: Preserve the documented hierarchy and relationships; exact measurements were not deterministically captured.

### 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": [
    {
      "role": "section heading",
      "family": "TribeSans",
      "stack": "TribeSans, sans-serif",
      "size": "18px",
      "weight": "400",
      "lineHeight": "27px",
      "letterSpacing": "normal",
      "sample": "AI that ships, scales, and compounds.",
      "element": "h1",
      "occurrences": 337,
      "sourceId": "font-1"
    },
    {
      "role": "UI/supporting text",
      "family": "TribeCaption",
      "stack": "TribeCaption, sans-serif",
      "size": "14px",
      "weight": "400",
      "lineHeight": "20px",
      "letterSpacing": "0.7px",
      "sample": "Start a conversation",
      "element": "span",
      "occurrences": 7,
      "sourceId": "font-5"
    }
  ],
  "siteRoles": [
    {
      "role": "display",
      "size": "48px",
      "family": "TribeSerif",
      "source": "computed",
      "traits": "Regular",
      "weight": "300",
      "evidence": "font-9: computed CSS at 1440×1000; AI role: TribeSerif 48px, used for major section headings ('Most companies...').",
      "sampleId": "font-9",
      "confidence": 0.95,
      "lineHeight": "56px",
      "letterSpacing": "normal"
    },
    {
      "role": "heading",
      "size": "30px",
      "family": "TribeSerif",
      "source": "computed",
      "traits": "Regular",
      "weight": "300",
      "evidence": "font-7: computed CSS at 1440×1000; AI role: TribeSerif 30px, used for prominent but slightly smaller text like the hero headline.",
      "sampleId": "font-7",
      "confidence": 0.8,
      "lineHeight": "41.3px",
      "letterSpacing": "normal"
    },
    {
      "role": "body",
      "size": "18px",
      "family": "TribeSans",
      "source": "computed",
      "traits": "Regular",
      "weight": "400",
      "evidence": "font-1: computed CSS at 1440×1000; AI role: TribeSans 18px, used for primary body copy.",
      "sampleId": "font-1",
      "confidence": 0.9,
      "lineHeight": "27px",
      "letterSpacing": "normal"
    },
    {
      "role": "mono",
      "size": "12px",
      "family": "TribeCaption",
      "source": "computed",
      "traits": "uppercase",
      "weight": "400",
      "evidence": "font-3: computed CSS at 1440×1000; AI role: TribeCaption 12px uppercase, used for small labels, metadata, and overlines.",
      "sampleId": "font-3",
      "confidence": 0.8,
      "lineHeight": "16px",
      "letterSpacing": "0.6px"
    }
  ]
}
```

### 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": [
    {
      "value": "#06141B",
      "cssValue": "rgb(6, 20, 27)",
      "alpha": 1,
      "appliedAs": [
        "svg-fill",
        "text"
      ],
      "occurrences": 177,
      "sourceId": "color-1"
    },
    {
      "value": "#EBEBE2",
      "cssValue": "rgb(235, 235, 226)",
      "alpha": 1,
      "appliedAs": [
        "text",
        "background"
      ],
      "occurrences": 4,
      "sourceId": "color-10"
    },
    {
      "value": "#07141B",
      "cssValue": "oklab(0.182061 -0.015542 -0.0192232 / 0.15)",
      "alpha": 0.14901960784313725,
      "appliedAs": [
        "border"
      ],
      "occurrences": 28,
      "sourceId": "color-19"
    }
  ],
  "functionalPalette": [
    {
      "hex": "#FAFAF8",
      "name": "canvas",
      "role": "canvas",
      "source": "computed",
      "evidence": "color-2: computed rgb(250, 250, 248); AI role: FAFAF8 is the primary light background color for most of the page.",
      "sampleId": "color-2",
      "confidence": 0.95
    },
    {
      "hex": "#06141B",
      "name": "text",
      "role": "text",
      "source": "computed",
      "evidence": "color-1: computed rgb(6, 20, 27); AI role: 06141B is the primary dark text color used against the light canvas.",
      "sampleId": "color-1",
      "confidence": 0.95
    },
    {
      "hex": "#FFFFFF",
      "name": "surface",
      "role": "surface",
      "source": "computed",
      "evidence": "color-3: computed rgb(255, 255, 255); AI role: FFFFFF is used for editorial card backgrounds.",
      "sampleId": "color-3",
      "confidence": 0.8
    },
    {
      "hex": "#65D9EE",
      "name": "accent",
      "role": "accent",
      "source": "computed",
      "evidence": "color-5: computed rgb(101, 217, 238); AI role: 65D9EE is a bright blue accent used in glowing shapes and specific UI elements.",
      "sampleId": "color-5",
      "confidence": 0.8
    },
    {
      "hex": "#FF7C0F",
      "name": "accent",
      "role": "accent",
      "source": "computed",
      "evidence": "color-9: computed rgb(255, 124, 15); AI role: FF7C0F is used as a prominent background for the 'Activate' card.",
      "sampleId": "color-9",
      "confidence": 0.8
    },
    {
      "hex": "#8A8276",
      "name": "muted text",
      "role": "muted-text",
      "source": "computed",
      "evidence": "color-12: computed rgb(138, 130, 118); AI role: 8A8276 is used for secondary elements and thin line graphics.",
      "sampleId": "color-12",
      "confidence": 0.7
    }
  ]
}
```

### Design tokens

```json
{
  "radius": "Small border-radius visible on the colored methodology cards and editorial cards.",
  "density": "Very low density, highly spacious to allow focus on singular statements and animated graphics.",
  "evidence": "Observed via general layout structure, card shapes, and generous whitespace between sections.",
  "borderStyle": "Thin, subtle borders used primarily for outline buttons and some logo containers.",
  "buttonStyle": "Pill-shaped or rounded-rectangle buttons, using either solid fill (primary) or thin borders (outline).",
  "cornerStyle": "Slightly rounded corners on cards and buttons.",
  "contentWidth": "Centered content with wide margins, creating a focused central column.",
  "spacingRhythm": "Generous spacing, particularly vertical, to accommodate scroll-linked animations."
}
```

### Reconstruction specification

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

- Root: 1200×1000px; block; padding {"top":"0px","right":"0px","bottom":"0px","left":"0px"}; gap normal; background rgba(0, 0, 0, 0); radius 0px.
- Representative content widths: 1200, 308, 265px.
- Layout containers: 0; cards/surfaces: 0; media elements: 4; browser animations: 0.

#### Container, grid, and spacing

```json
{
  "viewport": {
    "width": 1440,
    "captureBounds": {
      "top": 96,
      "bottom": 1000,
      "pageHeight": 12712
    }
  },
  "container": {
    "size": "1200×1000px",
    "position": "x 120px, y 0px",
    "display": "block",
    "positionMode": "relative",
    "padding": {
      "top": "0px",
      "right": "0px",
      "bottom": "0px",
      "left": "0px"
    },
    "margin": {
      "top": "0px",
      "right": "0px",
      "bottom": "0px",
      "left": "0px"
    },
    "gap": "normal",
    "columns": "not captured",
    "background": "rgba(0, 0, 0, 0)",
    "radius": "0px",
    "border": "0px solid rgb(6, 20, 27)",
    "shadow": "none",
    "overflow": "visible"
  },
  "spacing": {
    "observedGapsPx": [],
    "representativeContentWidthsPx": [
      1200,
      308,
      265
    ]
  },
  "columns": []
}
```

#### Cards and surfaces

```json
{
  "cards": [],
  "surfaces": {
    "radii": [
      "6px",
      "3.35544e+07px"
    ],
    "borders": [
      "1px solid oklab(0.182061 -0.015542 -0.0192232 / 0.15)"
    ],
    "shadows": []
  }
}
```

#### Media treatment

```json
[
  {
    "element": "canvas · absolute inset-0 w-full h-full",
    "size": "1440×1000px",
    "position": "x 0px, y 0px",
    "aspectRatio": 1.4,
    "objectFit": "fill",
    "objectPosition": "50% 50%",
    "radius": "0px",
    "overflow": "clip",
    "source": "source not captured"
  },
  {
    "element": "svg · svg",
    "size": "14×23px",
    "position": "x 803px, y 890px",
    "aspectRatio": 0.6,
    "objectFit": "fill",
    "objectPosition": "50% 50%",
    "radius": "0px",
    "overflow": "hidden",
    "source": "source not captured"
  },
  {
    "element": "svg · svg",
    "size": "14×23px",
    "position": "x 913px, y 810px",
    "aspectRatio": 0.6,
    "objectFit": "fill",
    "objectPosition": "50% 50%",
    "radius": "0px",
    "overflow": "hidden",
    "source": "source not captured"
  },
  {
    "element": "svg · svg",
    "size": "16×10px",
    "position": "x 1301px, y 939px",
    "aspectRatio": 1.6,
    "objectFit": "fill",
    "objectPosition": "50% 50%",
    "radius": "0px",
    "overflow": "hidden",
    "source": "source not captured"
  }
]
```

#### 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
{
  "schema": "little-details-section-measurements-v1",
  "source": "saved DOM/CSS element and animation maps",
  "capturedAt": "2026-11-06T17:32:58.145Z",
  "viewportWidth": 1440,
  "bounds": {
    "top": 96,
    "bottom": 1000,
    "pageHeight": 12712
  },
  "root": {
    "id": "ld-66",
    "tag": "section",
    "role": null,
    "label": "AI that ships, scales, and compounds.",
    "rect": {
      "x": 120,
      "y": 0,
      "width": 1200,
      "height": 1000
    },
    "display": "block",
    "position": "relative",
    "padding": {
      "top": "0px",
      "right": "0px",
      "bottom": "0px",
      "left": "0px"
    },
    "margin": {
      "top": "0px",
      "right": "0px",
      "bottom": "0px",
      "left": "0px"
    },
    "gap": "normal",
    "columns": null,
    "background": "rgba(0, 0, 0, 0)",
    "radius": "0px",
    "border": "0px solid rgb(6, 20, 27)",
    "shadow": "none",
    "overflow": "visible"
  },
  "spacing": {
    "gapsPx": [],
    "representativeContentWidthsPx": [
      1200,
      308,
      265
    ]
  },
  "columns": [],
  "cards": [],
  "surfaces": {
    "radii": [
      "6px",
      "3.35544e+07px"
    ],
    "borders": [
      "1px solid oklab(0.182061 -0.015542 -0.0192232 / 0.15)"
    ],
    "shadows": []
  },
  "media": [
    {
      "id": "ld-62",
      "tag": "canvas",
      "role": null,
      "label": "absolute inset-0 w-full h-full",
      "rect": {
        "x": 0,
        "y": 0,
        "width": 1440,
        "height": 1000
      },
      "aspectRatio": 1.4,
      "objectFit": "fill",
      "objectPosition": "50% 50%",
      "radius": "0px",
      "overflow": "clip",
      "media": null
    },
    {
      "id": "ld-77",
      "tag": "svg",
      "role": null,
      "label": "svg",
      "rect": {
        "x": 803,
        "y": 890,
        "width": 14,
        "height": 23
      },
      "aspectRatio": 0.6,
      "objectFit": "fill",
      "objectPosition": "50% 50%",
      "radius": "0px",
      "overflow": "hidden",
      "media": null
    },
    {
      "id": "ld-1228",
      "tag": "svg",
      "role": null,
      "label": "svg",
      "rect": {
        "x": 913,
        "y": 810,
        "width": 14,
        "height": 23
      },
      "aspectRatio": 0.6,
      "objectFit": "fill",
      "objectPosition": "50% 50%",
      "radius": "0px",
      "overflow": "hidden",
      "media": null
    },
    {
      "id": "ld-1278",
      "tag": "svg",
      "role": null,
      "label": "svg",
      "rect": {
        "x": 1301,
        "y": 939,
        "width": 16,
        "height": 10
      },
      "aspectRatio": 1.6,
      "objectFit": "fill",
      "objectPosition": "50% 50%",
      "radius": "0px",
      "overflow": "hidden",
      "media": null
    }
  ],
  "animations": [],
  "coverage": {
    "elementsInSection": 25,
    "cards": 0,
    "media": 4,
    "animations": 0
  },
  "limitations": [
    "Values describe the captured desktop viewport and may change at other breakpoints.",
    "Transforms, sticky layers, and virtualized content can make the inferred section root approximate.",
    "Animations include browser-exposed Web Animations API state; CSS or script motion that was inactive at capture time may be absent."
  ]
}
```

### 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: 1440px 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: Not assessed
- What transfers: Documented hierarchy and composition
- Dependencies: None recorded
- Guidance: Adapt the pattern to the new product and content.

### Evidence readiness

- Coverage: 7/7
- Can build: Yes
- Missing facts: timestamped authored motion
- Warning: Buildable with adaptations for these unsupported facts: timestamped authored motion.

### Agent implementation prompt

Create an original hero section inspired by the design evidence titled “Centered serif headline with logo strip”.

Purpose: hero section from the Home page of Tribe AI.

Structure: 1200×1000px root; block. Source layout label: 1200×1000px root; block. Preserve the documented hierarchy and relationships; exact measurements were not deterministically captured.

Visual signature to preserve at the pattern level: rgba(0, 0, 0, 0) with 1200×1000px root; block. Inspect the crop for image and content hierarchy.

Components: Navigation Bar, Hero, Logo Strip, Editorial Card, Primary Button, Outline Button, Footer, Feature Card, Sticky Scroll Section, Stacked Card Reveal, Animated Graphic Background.

Style direction: minimal, typographic, corporate, data-visualization-inspired, scroll-narrative.

Observed crop: 1440×904px (1.593:1). Treat this as evidence of composition, not a mandatory output size.

Typography evidence: {"role":"display","size":"48px","family":"TribeSerif","source":"computed","traits":"Regular","weight":"300","evidence":"font-9: computed CSS at 1440×1000; AI role: TribeSerif 48px, used for major section headings ('Most companies...').","sampleId":"font-9","confidence":0.95,"lineHeight":"56px","letterSpacing":"normal"} {"role":"heading","size":"30px","family":"TribeSerif","source":"computed","traits":"Regular","weight":"300","evidence":"font-7: computed CSS at 1440×1000; AI role: TribeSerif 30px, used for prominent but slightly smaller text like the hero headline.","sampleId":"font-7","confidence":0.8,"lineHeight":"41.3px","letterSpacing":"normal"} {"role":"body","size":"18px","family":"TribeSans","source":"computed","traits":"Regular","weight":"400","evidence":"font-1: computed CSS at 1440×1000; AI role: TribeSans 18px, used for primary body copy.","sampleId":"font-1","confidence":0.9,"lineHeight":"27px","letterSpacing":"normal"} {"role":"mono","size":"12px","family":"TribeCaption","source":"computed","traits":"uppercase","weight":"400","evidence":"font-3: computed CSS at 1440×1000; AI role: TribeCaption 12px uppercase, used for small labels, metadata, and overlines.","sampleId":"font-3","confidence":0.8,"lineHeight":"16px","letterSpacing":"0.6px"}

Color evidence: {"hex":"#FAFAF8","name":"canvas","role":"canvas","source":"computed","evidence":"color-2: computed rgb(250, 250, 248); AI role: FAFAF8 is the primary light background color for most of the page.","sampleId":"color-2","confidence":0.95} {"hex":"#06141B","name":"text","role":"text","source":"computed","evidence":"color-1: computed rgb(6, 20, 27); AI role: 06141B is the primary dark text color used against the light canvas.","sampleId":"color-1","confidence":0.95} {"hex":"#FFFFFF","name":"surface","role":"surface","source":"computed","evidence":"color-3: computed rgb(255, 255, 255); AI role: FFFFFF is used for editorial card backgrounds.","sampleId":"color-3","confidence":0.8} {"hex":"#65D9EE","name":"accent","role":"accent","source":"computed","evidence":"color-5: computed rgb(101, 217, 238); AI role: 65D9EE is a bright blue accent used in glowing shapes and specific UI elements.","sampleId":"color-5","confidence":0.8} {"hex":"#FF7C0F","name":"accent","role":"accent","source":"computed","evidence":"color-9: computed rgb(255, 124, 15); AI role: FF7C0F is used as a prominent background for the 'Activate' card.","sampleId":"color-9","confidence":0.8} {"hex":"#8A8276","name":"muted text","role":"muted-text","source":"computed","evidence":"color-12: computed rgb(138, 130, 118); AI role: 8A8276 is used for secondary elements and thin line graphics.","sampleId":"color-12","confidence":0.7}

Typography measured inside this section: {"id":"font-1","family":"TribeSans","fontStack":"TribeSans, sans-serif","weight":"400","size":"18px","lineHeight":"27px","letterSpacing":"normal","traits":"Regular","count":337,"contexts":[{"tag":"h1","text":"AI that ships, scales, and compounds.","top":-1,"property":"font"},{"tag":"h2","text":"We embed. We build. We don't stop until it's in production.","top":999,"property":"font"},{"tag":"span","text":"T","top":3144,"property":"font"}]} {"id":"font-5","family":"TribeCaption","fontStack":"TribeCaption, sans-serif","weight":"400","size":"14px","lineHeight":"20px","letterSpacing":"0.7px","traits":"uppercase","count":7,"contexts":[{"tag":"span","text":"Start a conversation","top":892,"property":"font"},{"tag":"a","text":"View all insights","top":10048,"property":"font"},{"tag":"a","text":"View all coverage","top":10945,"property":"font"}]}

Colors measured inside this section: {"id":"color-1","hex":"#06141B","alpha":1,"cssValue":"rgb(6, 20, 27)","count":177,"contexts":[{"tag":"path","text":"","top":37,"property":"svg-fill"},{"tag":"h1","text":"AI that ships, scales, and compounds.","top":-1,"property":"text"},{"tag":"h2","text":"We embed. We build. We don't stop until it's in production.","top":999,"property":"text"}]} {"id":"color-10","hex":"#EBEBE2","alpha":1,"cssValue":"rgb(235, 235, 226)","count":4,"contexts":[{"tag":"span","text":"Start a conversation","top":892,"property":"text"},{"tag":"div","text":"","top":10124,"property":"background"}]} {"id":"color-19","hex":"#07141B","alpha":0.14901960784313725,"cssValue":"oklab(0.182061 -0.015542 -0.0192232 / 0.15)","count":28,"contexts":[{"tag":"span","text":"Partners","top":10397,"property":"border"},{"tag":"button","text":"","top":919,"property":"border"}]}

Exact section measurements from the saved element map: root {"rect":{"x":120,"y":0,"width":1200,"height":1000},"padding":{"top":"0px","right":"0px","bottom":"0px","left":"0px"},"gap":"normal","columns":null,"overflow":"visible"}; spacing {"gapsPx":[],"representativeContentWidthsPx":[1200,308,265]}; surfaces {"radii":["6px","3.35544e+07px"],"borders":["1px solid oklab(0.182061 -0.015542 -0.0192232 / 0.15)"],"shadows":[]}; media [{"tag":"canvas","rect":{"x":0,"y":0,"width":1440,"height":1000},"aspectRatio":1.4,"objectFit":"fill","objectPosition":"50% 50%","radius":"0px"},{"tag":"svg","rect":{"x":803,"y":890,"width":14,"height":23},"aspectRatio":0.6,"objectFit":"fill","objectPosition":"50% 50%","radius":"0px"},{"tag":"svg","rect":{"x":913,"y":810,"width":14,"height":23},"aspectRatio":0.6,"objectFit":"fill","objectPosition":"50% 50%","radius":"0px"},{"tag":"svg","rect":{"x":1301,"y":939,"width":16,"height":10},"aspectRatio":1.6,"objectFit":"fill","objectPosition":"50% 50%","radius":"0px"}]

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

Transfer the documented hierarchy and composition rather than source copy or assets.

No explicit dependencies were recorded.

Adapt the pattern to the new product and content.

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