# Scroll-through approach principles with line art — Section Design Reference

Schema: Design Details SECTION.md v3.2
Source: https://santalarch.com/
Website: SANTAL
Section ID: 02507451-52c4-4db0-a3d2-88b77d7a204d
Design Details page: https://designdetails.io/sections/santalarch-com--home--process-02507451
Status: deterministic evidence captured; editorial AI review pending

## Purpose

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

## Layout

1440×9850px root; block

## Visual signature

minimal, typographic, editorial, monochromatic, architectural treatment at 960×600px. The crop spans 23029–31879px of a 45586px page.

## Components

- Navigation Bar
- Hero
- Gallery
- Feature Collection
- Hairline Grid Structure
- Full Viewport Sections

## 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: steps
- Source type: process
- Structure: 1440×9850px root; block
- Layout: 1440×9850px root; block
- Styles: minimal, typographic, editorial, monochromatic, architectural
- Components: Navigation Bar, Hero, Gallery, Feature Collection, Hairline Grid Structure, Full Viewport Sections
- Purpose: process section from the Home page of SANTAL.
- Visual signature: rgba(0, 0, 0, 0) with 1440×9850px root; block. Inspect the crop for image and content hierarchy.
- Place on the page: 3 of 7, after Other (`c039d7bf-61b2-4266-82f4-a5391e7252f2`), before Feature collection (`ea9c3cbe-3d37-4f7f-932c-7f8e4e7f04cc`)

### Crop and composition

- Crop: 960×600px; aspect ratio 1.6:1
- Page bounds: 23029–31879px of 45586px
- 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": "234px",
      "family": "Helvetica",
      "source": "computed",
      "traits": "uppercase",
      "weight": "400",
      "evidence": "font-9: computed CSS at 1440×1000; AI role: Massive 234px Helvetica used for dramatic, screen-filling thematic keywords.",
      "sampleId": "font-9",
      "confidence": 0.98,
      "lineHeight": "203.6px",
      "letterSpacing": "-23.4px"
    },
    {
      "role": "heading",
      "size": "98px",
      "family": "Helvetica",
      "source": "computed",
      "traits": "Regular",
      "weight": "400",
      "evidence": "font-5: computed CSS at 1440×1000; AI role: 98px Helvetica serving as primary section headers (e.g., 'Architecture', 'Quiet').",
      "sampleId": "font-5",
      "confidence": 0.95,
      "lineHeight": "86.2px",
      "letterSpacing": "-4.9px"
    },
    {
      "role": "body",
      "size": "16px",
      "family": "Helvetica",
      "source": "computed",
      "traits": "Regular",
      "weight": "400",
      "evidence": "font-6: computed CSS at 1440×1000; AI role: 16px Helvetica used for standard descriptive paragraphs and body copy.",
      "sampleId": "font-6",
      "confidence": 0.9,
      "lineHeight": "20.5px",
      "letterSpacing": "-0.3px"
    }
  ]
}
```

### Contextual design review

```json
{
  "status": "client-review-required",
  "checks": {
    "hierarchy": "Does each eyebrow, label and text level add useful information or clarify a necessary decision?",
    "decoration": "Do borders, effects, motion and spacing explain grouping or express a specific idea?",
    "repetition": "Can repeated claims, descriptions or actions be removed without losing needed information?",
    "identity": "What visible relationship between this offer, actual copy, imagery, typography and space gives the composition a convincing identity? Name its contribution and losses; matching ingredients or sparse styling are insufficient.",
    "reference": "Does it retain the source's dominant explanatory effect, media role, type balance and quiet space, not just columns?"
  },
  "heroMedia": {
    "appliesWhen": "A hero relies on focal media. A reasoned no-image hero remains valid and is judged by its visible composition.",
    "plan": "Record the image/headline first impression, actual available asset and crop, source image contribution, replacement contribution and losses before studies.",
    "review": "Does the actual hero suggest an offer, audience and experience appropriate to the whole brief? Quiet copy space or a recognizable subject is insufficient. One activity may lead without depicting all offers; justify its emphasis and resolve misleading implications. Missing assets or uncertain essential effects remain unverified."
  },
  "optionMedia": {
    "appliesWhen": "A section uses imagery to help visitors distinguish choices.",
    "planPerChoice": [
      "visitor distinction",
      "observable image evidence",
      "available asset or unresolved dependency",
      "crop retaining the distinguishing detail"
    ],
    "review": "Inspect the actual images. Shared atmosphere, changed crops or matching cards do not establish choice-specific meaning. If that role fails, resolve assets, choose an executable alternative or record lost/unverified and reject. Text comparison can be valid; it preserves a different contribution."
  },
  "noteCheck": "Check editorial interpretations against the received image; retain conflicts and unknown states instead of inventing selection or image meaning.",
  "decision": "Judge brief fit and positive character separately from layout preservation. Compare actual renders/references; essential lost or unverified effects prevent proceed. Reject either or both weak directions after inspection.",
  "qualityCertified": false
}
```

### Typography preservation review

```json
{
  "beforeStudy": "Use the actual reference image and captured section values to describe what its typography contributes: letter proportions and width, weight and contrast, case, line breaks and text-block shape, scale, spacing and relationship to the image. Label visual observations separately from captured facts and unknowns.",
  "substitution": "Choose an available, permitted face for the brief. Explain any substitute by the source relationships it preserves and any deliberate change; a familiar family, a serif/sans category or a mood label alone is not a justification. Do not copy an unavailable proprietary font or ban a common family merely because it is common.",
  "finalCheck": "Compare the actual rendered headline and supporting type beside this reference at the intended viewport. Check the loaded face/fallback and visible proportions, weight, line breaks, scale, spacing, contrast and image balance. Revise or reject when an essential typographic contribution is lost or unverified; a layout match or a font name is not a typography pass.",
  "unknowns": [
    "Section-specific computed typography was not recorded; website context cannot fill this gap.",
    "Glyph proportions, optical weight, actual line breaks, text-block shape and type-to-image balance require inspection of the reference image.",
    "Actual rendered face, font availability/licensing and responsive typography are not verified by this response."
  ]
}
```

### 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": "#F2F0F0",
      "name": "canvas",
      "role": "canvas",
      "source": "computed",
      "evidence": "color-1: computed rgb(242, 240, 240); AI role: #F2F0F0 light grey acting as the primary background color for light sections.",
      "sampleId": "color-1",
      "confidence": 0.95
    },
    {
      "hex": "#0F0F0F",
      "name": "text",
      "role": "text",
      "source": "computed",
      "evidence": "color-2: computed rgb(15, 15, 15); AI role: #0F0F0F deep black used for almost all text across the canvas.",
      "sampleId": "color-2",
      "confidence": 0.95
    },
    {
      "hex": "#000000",
      "name": "surface",
      "role": "surface",
      "source": "computed",
      "evidence": "color-7: computed rgb(0, 0, 0); AI role: Pure black (#000000) used for the canvas/background in dark-mode, inverted sections.",
      "sampleId": "color-7",
      "confidence": 0.9
    }
  ]
}
```

### Design tokens

```json
{
  "radius": "0px",
  "density": "Extremely sparse. The layout aggressively prioritizes empty canvas space to lend gravity to the typography and images.",
  "evidence": "Observations from the CSS dom output showing 0px radii, repeated #F2F0F0 backgrounds, Helvetica usage at massive font sizes, and visual crops displaying extensive white space.",
  "borderStyle": "Hairline 1px solid borders in low contrast used to demarcate grid structures, columns, and navigational boundaries.",
  "buttonStyle": "Stripped back to purely typographic links or minimal cross/plus icons, relying on proximity and layout rather than contained shapes.",
  "cornerStyle": "Absolute sharp corners everywhere; no border radii are used, reinforcing the rigid, brutalist/architectural aesthetic.",
  "contentWidth": "Full bleed. Elements either span edge-to-edge or snap rigidly to vertical guide lines that span the entire viewport.",
  "spacingRhythm": "Macro-typography dictates the spacing, with vast margins and padding driven by strict viewport-relative units to maintain layout integrity."
}
```

### Reconstruction specification

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

- Root: 1440×9850px; block; padding {"top":"0px","right":"0px","bottom":"0px","left":"0px"}; gap normal; background rgba(0, 0, 0, 0); radius 0px.
- Layout containers: 0; cards/surfaces: 0; media elements: 0; browser animations: 0.

#### Container, grid, and spacing

```json
{
  "viewport": {
    "width": 1440,
    "captureBounds": {
      "top": 23029,
      "bottom": 31879,
      "pageHeight": 45586
    }
  },
  "container": {
    "size": "1440×9850px",
    "position": "x 0px, y 22029px",
    "display": "block",
    "positionMode": "static",
    "padding": {
      "top": "0px",
      "right": "0px",
      "bottom": "0px",
      "left": "0px"
    },
    "margin": {
      "top": "-1000px",
      "right": "0px",
      "bottom": "0px",
      "left": "0px"
    },
    "gap": "normal",
    "columns": "not captured",
    "background": "rgba(0, 0, 0, 0)",
    "radius": "0px",
    "border": "0px none rgb(15, 15, 15)",
    "shadow": "none",
    "overflow": "visible"
  },
  "spacing": {
    "observedGapsPx": [],
    "representativeContentWidthsPx": []
  },
  "columns": []
}
```

#### Cards and surfaces

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

#### 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
{
  "schema": "little-details-section-measurements-v1",
  "source": "saved DOM/CSS element and animation maps",
  "capturedAt": "2026-11-15T20:45:44.706Z",
  "viewportWidth": 1440,
  "bounds": {
    "top": 23029,
    "bottom": 31879,
    "pageHeight": 45586
  },
  "root": {
    "id": "ld-264",
    "tag": "section",
    "role": null,
    "label": "Intent Before ImageEvery project begins with a clear architectural direction defined through proport",
    "rect": {
      "x": 0,
      "y": 22029,
      "width": 1440,
      "height": 9850
    },
    "display": "block",
    "position": "static",
    "padding": {
      "top": "0px",
      "right": "0px",
      "bottom": "0px",
      "left": "0px"
    },
    "margin": {
      "top": "-1000px",
      "right": "0px",
      "bottom": "0px",
      "left": "0px"
    },
    "gap": "normal",
    "columns": null,
    "background": "rgba(0, 0, 0, 0)",
    "radius": "0px",
    "border": "0px none rgb(15, 15, 15)",
    "shadow": "none",
    "overflow": "visible"
  },
  "spacing": {
    "gapsPx": [],
    "representativeContentWidthsPx": []
  },
  "columns": [],
  "cards": [],
  "surfaces": {
    "radii": [],
    "borders": [],
    "shadows": []
  },
  "media": [],
  "animations": [],
  "coverage": {
    "elementsInSection": 2,
    "cards": 0,
    "media": 0,
    "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

These categories describe evidence, not independent layers that can be swapped without changing the design. Study the complete reference system before adapting it.

- Preserve: content hierarchy, layout relationships, section rhythm, interaction purpose.
- Adapt: brand colors, font family, copy, imagery, icons, decorative details.
- Rule: These compatibility categories are coupled: fonts, color and imagery can carry the layout's design logic. Preserve or purposefully replace their contribution 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 steps section inspired by the design evidence titled “Scroll-through approach principles with line art”.

Purpose: process section from the Home page of SANTAL.

Structure: 1440×9850px root; block. Source layout label: 1440×9850px 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 1440×9850px root; block. Inspect the crop for image and content hierarchy.

Components: Navigation Bar, Hero, Gallery, Feature Collection, Hairline Grid Structure, Full Viewport Sections.

Style direction: minimal, typographic, editorial, monochromatic, architectural.

Observed crop: 960×600px (1.6:1). Treat this as evidence of composition, not a mandatory output size.

Typography evidence: {"role":"display","size":"234px","family":"Helvetica","source":"computed","traits":"uppercase","weight":"400","evidence":"font-9: computed CSS at 1440×1000; AI role: Massive 234px Helvetica used for dramatic, screen-filling thematic keywords.","sampleId":"font-9","confidence":0.98,"lineHeight":"203.6px","letterSpacing":"-23.4px"} {"role":"heading","size":"98px","family":"Helvetica","source":"computed","traits":"Regular","weight":"400","evidence":"font-5: computed CSS at 1440×1000; AI role: 98px Helvetica serving as primary section headers (e.g., 'Architecture', 'Quiet').","sampleId":"font-5","confidence":0.95,"lineHeight":"86.2px","letterSpacing":"-4.9px"} {"role":"body","size":"16px","family":"Helvetica","source":"computed","traits":"Regular","weight":"400","evidence":"font-6: computed CSS at 1440×1000; AI role: 16px Helvetica used for standard descriptive paragraphs and body copy.","sampleId":"font-6","confidence":0.9,"lineHeight":"20.5px","letterSpacing":"-0.3px"}

Color evidence: {"hex":"#F2F0F0","name":"canvas","role":"canvas","source":"computed","evidence":"color-1: computed rgb(242, 240, 240); AI role: #F2F0F0 light grey acting as the primary background color for light sections.","sampleId":"color-1","confidence":0.95} {"hex":"#0F0F0F","name":"text","role":"text","source":"computed","evidence":"color-2: computed rgb(15, 15, 15); AI role: #0F0F0F deep black used for almost all text across the canvas.","sampleId":"color-2","confidence":0.95} {"hex":"#000000","name":"surface","role":"surface","source":"computed","evidence":"color-7: computed rgb(0, 0, 0); AI role: Pure black (#000000) used for the canvas/background in dark-mode, inverted sections.","sampleId":"color-7","confidence":0.9}

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":22029,"width":1440,"height":9850},"padding":{"top":"0px","right":"0px","bottom":"0px","left":"0px"},"gap":"normal","columns":null,"overflow":"visible"}; spacing {"gapsPx":[],"representativeContentWidthsPx":[]}; surfaces {"radii":[],"borders":[],"shadows":[]}

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.

Study layout, typography, color, imagery and spacing as one coordinated source system. Record what creates its effect before producing a concept; preserve or purposefully replace each consequential relationship when adapting the business content and assets.

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