# Stacked rounded image cards — Section Design Reference

Schema: Design Details SECTION.md v3.2
Source: https://www.lassie.ai/
Website: Lassie
Section ID: be47016f-93af-473f-80b1-d28dc54f6131
Design Details page: https://designdetails.io/sections/lassie-ai--home--features-be47016f
Status: deterministic evidence captured; editorial AI review pending

## Purpose

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

## Layout

1440×576px root; block

## Visual signature

minimal, typographic, soft, scroll-driven treatment at 1440×918px. The crop spans 1270–2188px of a 17518px page.

## Components

- Navigation Bar
- Hero With Background Imagery
- Input Field
- Floating Product Card
- Testimonial Card
- Feature Collection
- FAQ Accordion
- Footer
- Primary Button
- Interactive Scroll Map
- Floating UI Snippets

## 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: features
- Source type: features
- Structure: 1440×576px root; block
- Layout: 1440×576px root; block
- Styles: minimal, typographic, soft, scroll-driven
- Components: Navigation Bar, Hero With Background Imagery, Input Field, Floating Product Card, Testimonial Card, Feature Collection, FAQ Accordion, Footer, Primary Button, Interactive Scroll Map, Floating UI Snippets
- Purpose: features section from the Home page of Lassie.
- Visual signature: rgba(0, 0, 0, 0) with 1440×576px root; block. Inspect the crop for image and content hierarchy.
- Place on the page: 4 of 16, after Other (`933e8b4e-7ea6-4323-b16c-adc0b70c2c05`), before Feature collection (`aaeb500d-7bd9-4b14-962d-113fc3d9a609`)

### Crop and composition

- Crop: 1440×918px; aspect ratio 1.569:1
- Page bounds: 1270–2188px of 17518px
- 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": [],
  "siteRoles": [
    {
      "role": "display",
      "size": "86.5px",
      "family": "abcMarist",
      "source": "computed",
      "traits": "Regular",
      "weight": "350",
      "evidence": "font-3: computed CSS at 1440×1000; AI role: Large 86.5px serif (abcMarist) used for the main hero statement.",
      "sampleId": "font-3",
      "confidence": 0.95,
      "lineHeight": "82.2px",
      "letterSpacing": "-1.7px"
    },
    {
      "role": "heading",
      "size": "58.3px",
      "family": "abcMarist",
      "source": "computed",
      "traits": "Regular",
      "weight": "350",
      "evidence": "font-2: computed CSS at 1440×1000; AI role: 58.3px serif (abcMarist) used for primary section headings throughout the page.",
      "sampleId": "font-2",
      "confidence": 0.9,
      "lineHeight": "61.2px",
      "letterSpacing": "-0.6px"
    },
    {
      "role": "body",
      "size": "17px",
      "family": "dmSans",
      "source": "computed",
      "traits": "Regular",
      "weight": "400",
      "evidence": "font-6: computed CSS at 1440×1000; AI role: 17px sans-serif (dmSans) used for standard descriptive text.",
      "sampleId": "font-6",
      "confidence": 0.85,
      "lineHeight": "24px",
      "letterSpacing": "normal"
    },
    {
      "role": "mono",
      "size": "14px",
      "family": "dmMono",
      "source": "computed",
      "traits": "Regular",
      "weight": "400",
      "evidence": "font-8: computed CSS at 1440×1000; AI role: 14px monospace (dmMono) used for the footer copyright text.",
      "sampleId": "font-8",
      "confidence": 0.9,
      "lineHeight": "16px",
      "letterSpacing": "-0.1px"
    }
  ]
}
```

### 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": "#F9F8F5",
      "name": "canvas",
      "role": "canvas",
      "source": "computed",
      "evidence": "color-1: computed rgb(249, 248, 245); AI role: The off-white (#F9F8F5) serves as the primary background color for the majority of the page sections.",
      "sampleId": "color-1",
      "confidence": 0.95
    },
    {
      "hex": "#1A1613",
      "name": "text",
      "role": "text",
      "source": "computed",
      "evidence": "color-5: computed rgb(26, 22, 19); AI role: Near-black (#1A1613) is the primary color for headings and body copy.",
      "sampleId": "color-5",
      "confidence": 0.95
    },
    {
      "hex": "#FFFFFF",
      "name": "surface",
      "role": "surface",
      "source": "computed",
      "evidence": "color-2: computed rgb(255, 255, 255); AI role: White (#FFFFFF) is used for component backgrounds like the navigation pill and individual feature cards.",
      "sampleId": "color-2",
      "confidence": 0.9
    },
    {
      "hex": "#666666",
      "name": "muted text",
      "role": "muted-text",
      "source": "computed",
      "evidence": "color-4: computed rgb(102, 102, 102); AI role: Grey (#666666) is used for secondary text, such as descriptions under main headings or footer links.",
      "sampleId": "color-4",
      "confidence": 0.85
    }
  ]
}
```

### Design tokens

```json
{
  "radius": "Large border radii are consistently used to create soft, pill-like shapes for buttons and floating UI elements.",
  "density": "The design is loose and airy, heavily relying on negative space to highlight typographic elements and scroll-driven interactions.",
  "evidence": "Observed via the structural layout, rounded shapes of the navigation and 'How Lassie works' cards, and the overall uncluttered aesthetic contrasting with large typography.",
  "borderStyle": "Borders are generally subtle or non-existent, relying more on background color contrast to define shapes, except for thin, translucent borders on some input elements.",
  "buttonStyle": "Buttons are predominantly pill-shaped, utilizing solid white or dark backgrounds with contrasting text.",
  "cornerStyle": "Distinctly rounded corners are a key motif, applied to the navigation bar, feature cards, and the input field container.",
  "contentWidth": "Content is generally centered and constrained to a readable maximum width, though background images and the scroll map break out to utilize the full viewport width.",
  "spacingRhythm": "Generous vertical spacing between major sections, allowing the scroll-triggered animations to breathe and command attention."
}
```

### Reconstruction specification

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

- Root: 1440×576px; block; padding {"top":"0px","right":"0px","bottom":"0px","left":"0px"}; gap normal; background rgba(0, 0, 0, 0); radius 0px.
- Representative content widths: 821, 782, 379, 320, 257px.
- Layout containers: 1; cards/surfaces: 0; media elements: 7; browser animations: 0.

#### Container, grid, and spacing

```json
{
  "viewport": {
    "width": 1440,
    "captureBounds": {
      "top": 1270,
      "bottom": 2188,
      "pageHeight": 17518
    }
  },
  "container": {
    "size": "1440×576px",
    "position": "x 0px, y 1612px",
    "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(0, 0, 0)",
    "shadow": "none",
    "overflow": "visible"
  },
  "spacing": {
    "observedGapsPx": [],
    "representativeContentWidthsPx": [
      821,
      782,
      379,
      320,
      257
    ]
  },
  "columns": [
    {
      "element": "section · AI that runs thedoctor’s office",
      "size": "1440×282px",
      "position": "x 0px, y 1270px",
      "display": "flex",
      "template": "not captured",
      "direction": "column",
      "gap": "normal"
    }
  ]
}
```

#### Cards and surfaces

```json
{
  "cards": [],
  "surfaces": {
    "radii": [],
    "borders": [],
    "shadows": []
  }
}
```

#### Media treatment

```json
[
  {
    "element": "video · relative z-[1] h-full w-full object-cover",
    "size": "821×517px",
    "position": "x 310px, y 1714px",
    "aspectRatio": 1.6,
    "objectFit": "cover",
    "objectPosition": "50% 50%",
    "radius": "0px",
    "overflow": "clip",
    "source": "https://cdn.lassie.ai/assets/media/website/lassie-pg-3-01a69d26-1a50-4804-9dec-c1b1670faf17.mp4"
  },
  {
    "element": "video · relative z-[1] h-full w-full object-cover",
    "size": "821×517px",
    "position": "x 310px, y 1714px",
    "aspectRatio": 1.6,
    "objectFit": "cover",
    "objectPosition": "50% 50%",
    "radius": "0px",
    "overflow": "clip",
    "source": "https://cdn.lassie.ai/assets/media/website/lassie-pg-2-4fba523a-2180-4814-bf6a-2c9000826b7c.mp4"
  },
  {
    "element": "video · relative z-[1] h-full w-full object-cover",
    "size": "821×517px",
    "position": "x 310px, y 1714px",
    "aspectRatio": 1.6,
    "objectFit": "cover",
    "objectPosition": "50% 50%",
    "radius": "0px",
    "overflow": "clip",
    "source": "https://cdn.lassie.ai/assets/media/website/lassie-pg-1-e1832fd4-4bf4-4fbd-acbb-ec8ee35882a2.mp4"
  },
  {
    "element": "img · h-full w-full object-cover",
    "size": "782×492px",
    "position": "x 329px, y 1726px",
    "aspectRatio": 1.6,
    "objectFit": "cover",
    "objectPosition": "50% 50%",
    "radius": "0px",
    "overflow": "clip",
    "source": "https://www.lassie.ai/_next/image?url=https%3A%2F%2Fcdn.lassie.ai%2Fassets%2Fmedia%2Fwebsite%2Flassie-pg-3.jpg&w=1920&q=75"
  },
  {
    "element": "img · h-full w-full object-cover",
    "size": "782×492px",
    "position": "x 329px, y 1726px",
    "aspectRatio": 1.6,
    "objectFit": "cover",
    "objectPosition": "50% 50%",
    "radius": "0px",
    "overflow": "clip",
    "source": "https://www.lassie.ai/_next/image?url=https%3A%2F%2Fcdn.lassie.ai%2Fassets%2Fmedia%2Fwebsite%2Flassie-pg-2.jpg&w=1920&q=75"
  },
  {
    "element": "img · h-full w-full object-cover",
    "size": "782×492px",
    "position": "x 329px, y 1726px",
    "aspectRatio": 1.6,
    "objectFit": "cover",
    "objectPosition": "50% 50%",
    "radius": "0px",
    "overflow": "clip",
    "source": "https://www.lassie.ai/_next/image?url=https%3A%2F%2Fcdn.lassie.ai%2Fassets%2Fmedia%2Fwebsite%2Flassie-pg-1.jpg&w=1920&q=75"
  },
  {
    "element": "canvas · canvas",
    "size": "320×160px",
    "position": "x 560px, y 1270px",
    "aspectRatio": 2,
    "objectFit": "fill",
    "objectPosition": "50% 50%",
    "radius": "0px",
    "overflow": "clip",
    "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": "2026-09-21T04:27:42.956Z",
  "viewportWidth": 1440,
  "bounds": {
    "top": 1270,
    "bottom": 2188,
    "pageHeight": 17518
  },
  "root": {
    "id": "ld-152",
    "tag": "section",
    "role": null,
    "label": "And answers your questionsGot a question about a claim? Want to see how your week is tracking? Lassi",
    "rect": {
      "x": 0,
      "y": 1612,
      "width": 1440,
      "height": 576
    },
    "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(0, 0, 0)",
    "shadow": "none",
    "overflow": "visible"
  },
  "spacing": {
    "gapsPx": [],
    "representativeContentWidthsPx": [
      821,
      782,
      379,
      320,
      257
    ]
  },
  "columns": [
    {
      "id": "ld-145",
      "tag": "section",
      "role": null,
      "label": "AI that runs thedoctor’s office",
      "rect": {
        "x": 0,
        "y": 1270,
        "width": 1440,
        "height": 282
      },
      "display": "flex",
      "columns": null,
      "direction": "column",
      "gap": "normal"
    }
  ],
  "cards": [],
  "surfaces": {
    "radii": [],
    "borders": [],
    "shadows": []
  },
  "media": [
    {
      "id": "ld-160",
      "tag": "video",
      "role": null,
      "label": "relative z-[1] h-full w-full object-cover",
      "rect": {
        "x": 310,
        "y": 1714,
        "width": 821,
        "height": 517
      },
      "aspectRatio": 1.6,
      "objectFit": "cover",
      "objectPosition": "50% 50%",
      "radius": "0px",
      "overflow": "clip",
      "media": {
        "src": "https://cdn.lassie.ai/assets/media/website/lassie-pg-3-01a69d26-1a50-4804-9dec-c1b1670faf17.mp4",
        "poster": "",
        "duration": 8.7
      }
    },
    {
      "id": "ld-169",
      "tag": "video",
      "role": null,
      "label": "relative z-[1] h-full w-full object-cover",
      "rect": {
        "x": 310,
        "y": 1714,
        "width": 821,
        "height": 517
      },
      "aspectRatio": 1.6,
      "objectFit": "cover",
      "objectPosition": "50% 50%",
      "radius": "0px",
      "overflow": "clip",
      "media": {
        "src": "https://cdn.lassie.ai/assets/media/website/lassie-pg-2-4fba523a-2180-4814-bf6a-2c9000826b7c.mp4",
        "poster": "",
        "duration": 14.033333
      }
    },
    {
      "id": "ld-178",
      "tag": "video",
      "role": null,
      "label": "relative z-[1] h-full w-full object-cover",
      "rect": {
        "x": 310,
        "y": 1714,
        "width": 821,
        "height": 517
      },
      "aspectRatio": 1.6,
      "objectFit": "cover",
      "objectPosition": "50% 50%",
      "radius": "0px",
      "overflow": "clip",
      "media": {
        "src": "https://cdn.lassie.ai/assets/media/website/lassie-pg-1-e1832fd4-4bf4-4fbd-acbb-ec8ee35882a2.mp4",
        "poster": "",
        "duration": 8.133333
      }
    },
    {
      "id": "ld-161",
      "tag": "img",
      "role": null,
      "label": "h-full w-full object-cover",
      "rect": {
        "x": 329,
        "y": 1726,
        "width": 782,
        "height": 492
      },
      "aspectRatio": 1.6,
      "objectFit": "cover",
      "objectPosition": "50% 50%",
      "radius": "0px",
      "overflow": "clip",
      "media": {
        "src": "https://www.lassie.ai/_next/image?url=https%3A%2F%2Fcdn.lassie.ai%2Fassets%2Fmedia%2Fwebsite%2Flassie-pg-3.jpg&w=1920&q=75",
        "naturalWidth": 1284,
        "naturalHeight": 810,
        "alt": "Cover image for the video of And answers your questions"
      }
    },
    {
      "id": "ld-170",
      "tag": "img",
      "role": null,
      "label": "h-full w-full object-cover",
      "rect": {
        "x": 329,
        "y": 1726,
        "width": 782,
        "height": 492
      },
      "aspectRatio": 1.6,
      "objectFit": "cover",
      "objectPosition": "50% 50%",
      "radius": "0px",
      "overflow": "clip",
      "media": {
        "src": "https://www.lassie.ai/_next/image?url=https%3A%2F%2Fcdn.lassie.ai%2Fassets%2Fmedia%2Fwebsite%2Flassie-pg-2.jpg&w=1920&q=75",
        "naturalWidth": 1284,
        "naturalHeight": 810,
        "alt": "Cover image for the video of Keeps you in the loop"
      }
    },
    {
      "id": "ld-179",
      "tag": "img",
      "role": null,
      "label": "h-full w-full object-cover",
      "rect": {
        "x": 329,
        "y": 1726,
        "width": 782,
        "height": 492
      },
      "aspectRatio": 1.6,
      "objectFit": "cover",
      "objectPosition": "50% 50%",
      "radius": "0px",
      "overflow": "clip",
      "media": {
        "src": "https://www.lassie.ai/_next/image?url=https%3A%2F%2Fcdn.lassie.ai%2Fassets%2Fmedia%2Fwebsite%2Flassie-pg-1.jpg&w=1920&q=75",
        "naturalWidth": 1284,
        "naturalHeight": 810,
        "alt": "Cover image for the video of Lassie does your paperwork"
      }
    },
    {
      "id": "ld-148",
      "tag": "canvas",
      "role": null,
      "label": "canvas",
      "rect": {
        "x": 560,
        "y": 1270,
        "width": 320,
        "height": 160
      },
      "aspectRatio": 2,
      "objectFit": "fill",
      "objectPosition": "50% 50%",
      "radius": "0px",
      "overflow": "clip",
      "media": null
    }
  ],
  "animations": [],
  "coverage": {
    "elementsInSection": 19,
    "cards": 0,
    "media": 7,
    "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: 6/7
- Can build: Yes
- Missing facts: section-specific computed typography and color samples; timestamped authored motion
- Warning: Buildable with adaptations for these unsupported facts: section-specific computed typography and color samples; timestamped authored motion.

### Agent implementation prompt

Create an original features section inspired by the design evidence titled “Stacked rounded image cards”.

Purpose: features section from the Home page of Lassie.

Structure: 1440×576px root; block. Source layout label: 1440×576px 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 1440×576px root; block. Inspect the crop for image and content hierarchy.

Components: Navigation Bar, Hero With Background Imagery, Input Field, Floating Product Card, Testimonial Card, Feature Collection, FAQ Accordion, Footer, Primary Button, Interactive Scroll Map, Floating UI Snippets.

Style direction: minimal, typographic, soft, scroll-driven.

Observed crop: 1440×918px (1.569:1). Treat this as evidence of composition, not a mandatory output size.

Typography evidence: {"role":"display","size":"86.5px","family":"abcMarist","source":"computed","traits":"Regular","weight":"350","evidence":"font-3: computed CSS at 1440×1000; AI role: Large 86.5px serif (abcMarist) used for the main hero statement.","sampleId":"font-3","confidence":0.95,"lineHeight":"82.2px","letterSpacing":"-1.7px"} {"role":"heading","size":"58.3px","family":"abcMarist","source":"computed","traits":"Regular","weight":"350","evidence":"font-2: computed CSS at 1440×1000; AI role: 58.3px serif (abcMarist) used for primary section headings throughout the page.","sampleId":"font-2","confidence":0.9,"lineHeight":"61.2px","letterSpacing":"-0.6px"} {"role":"body","size":"17px","family":"dmSans","source":"computed","traits":"Regular","weight":"400","evidence":"font-6: computed CSS at 1440×1000; AI role: 17px sans-serif (dmSans) used for standard descriptive text.","sampleId":"font-6","confidence":0.85,"lineHeight":"24px","letterSpacing":"normal"} {"role":"mono","size":"14px","family":"dmMono","source":"computed","traits":"Regular","weight":"400","evidence":"font-8: computed CSS at 1440×1000; AI role: 14px monospace (dmMono) used for the footer copyright text.","sampleId":"font-8","confidence":0.9,"lineHeight":"16px","letterSpacing":"-0.1px"}

Color evidence: {"hex":"#F9F8F5","name":"canvas","role":"canvas","source":"computed","evidence":"color-1: computed rgb(249, 248, 245); AI role: The off-white (#F9F8F5) serves as the primary background color for the majority of the page sections.","sampleId":"color-1","confidence":0.95} {"hex":"#1A1613","name":"text","role":"text","source":"computed","evidence":"color-5: computed rgb(26, 22, 19); AI role: Near-black (#1A1613) is the primary color for headings and body copy.","sampleId":"color-5","confidence":0.95} {"hex":"#FFFFFF","name":"surface","role":"surface","source":"computed","evidence":"color-2: computed rgb(255, 255, 255); AI role: White (#FFFFFF) is used for component backgrounds like the navigation pill and individual feature cards.","sampleId":"color-2","confidence":0.9} {"hex":"#666666","name":"muted text","role":"muted-text","source":"computed","evidence":"color-4: computed rgb(102, 102, 102); AI role: Grey (#666666) is used for secondary text, such as descriptions under main headings or footer links.","sampleId":"color-4","confidence":0.85}

No section-bounded typography samples were measured.

No section-bounded color samples were measured.

Exact section measurements from the saved element map: root {"rect":{"x":0,"y":1612,"width":1440,"height":576},"padding":{"top":"0px","right":"0px","bottom":"0px","left":"0px"},"gap":"normal","columns":null,"overflow":"visible"}; spacing {"gapsPx":[],"representativeContentWidthsPx":[821,782,379,320,257]}; surfaces {"radii":[],"borders":[],"shadows":[]}; media [{"tag":"video","rect":{"x":310,"y":1714,"width":821,"height":517},"aspectRatio":1.6,"objectFit":"cover","objectPosition":"50% 50%","radius":"0px"},{"tag":"video","rect":{"x":310,"y":1714,"width":821,"height":517},"aspectRatio":1.6,"objectFit":"cover","objectPosition":"50% 50%","radius":"0px"},{"tag":"video","rect":{"x":310,"y":1714,"width":821,"height":517},"aspectRatio":1.6,"objectFit":"cover","objectPosition":"50% 50%","radius":"0px"},{"tag":"img","rect":{"x":329,"y":1726,"width":782,"height":492},"aspectRatio":1.6,"objectFit":"cover","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.