Create a responsive HTML website using the existing project stack for [PROJECT] and [AUDIENCE]. The task is: Customer Case Study.

## Required content and structure

Structure the story as context, challenge, approach, evidence and remaining limitations.

Use [APPROVED_CONTENT] as the source of names, dates, figures, claims and destinations. List missing inputs before substituting anything. If a demonstration is needed, label its content as fictional. Do not invent customer quotes, rankings, partner logos or product capabilities.

## Design direction

Use [BRAND_RULES] and the design system already selected in the project. If no system is supplied, start with this direction: strong black typography, warm yellow panels and sharp geometric compositions; controlled contrast. Keep type, spacing and color roles consistent. Prioritize the task over decorative elements and avoid a generic collection of unrelated cards.

## Content preparation

Assemble an approved customer narrative with the initial situation, constraints, work performed and evidence of outcomes. Keep source notes for every quotation and metric.

## Layout and behavior

Tell the story in a sequence of problem, decision, implementation and result. Pair each outcome with its measurement period and scope so the case study explains what changed.

## Task-specific acceptance check

- Attribute every quote and metric to supplied approved evidence.
- Compare the displayed claim with the underlying evidence.
- Attribute shared work accurately and keep limitations visible when several factors could have contributed to the outcome.

## Implementation and review

Keep text editable. Use semantic structure, descriptive controls, visible keyboard focus and appropriate empty/error states. Check narrow and wide layouts. Respect reduced-motion preferences. Preserve any existing project framework and dependencies; do not silently replace the stack. Return the editable files and explain any incomplete behavior or unsupported inputs. Review this specific task before proposing extra features.

## Reference attachment and reconstruction goal

Attach reference.webp from this prompt’s download bundle alongside this prompt in OpenDesign. Build an editable result with a similar composition and hierarchy; do not embed the whole reference image as the finished interface. Preserve approved project content and brand rules if they conflict with fictional sample labels. If the image is missing or unreadable, ask for it instead of claiming visual fidelity.

## Reference composition and content

Use the attached reference.webp as the visual reference for Customer Case Study. Before building, identify the major regions from top to bottom, their relative widths and heights, alignment, spacing, typography hierarchy, surface colors, borders, imagery and repeated components. Preserve those relationships rather than substituting a generic template. Required task content: Structure the story as context, challenge, approach, evidence and remaining limitations. Use the following task-specific layout guidance when translating the image into editable elements: Tell the story in a sequence of problem, decision, implementation and result. Pair each outcome with its measurement period and scope so the case study explains what changed.

## Visual direction from the example brief

strong black typography, warm yellow panels and sharp geometric compositions; controlled contrast.

## Interaction specification

The reference is a static concept: the behavior below is a requirement to implement, not proof that the picture already works. Copy the customized prompt into your working project. Start with the core task: Structure the story as context, challenge, approach, evidence and remaining limitations. Attribute every quote and metric to supplied approved evidence. For each visible control, specify its trigger, affected state and feedback; implement local changes with consistent state across related views. Give search and filters real results, selection controls an explicit active state, and save actions visible pending/success/failure feedback where relevant. Do not add unrelated workflows. Use proper links for navigation, buttons for actions and accessible names for icon controls. Do not imply a backend operation succeeded when only a local demo changed.

## Visual comparison and delivery

1. Compare the result with the attached image at matching proportions. Review major region placement, relative image sizes, line breaks, spacing, typography hierarchy, contrast, active states and content density before polishing decorative details.
2. Then test the narrow layout without squeezing desktop text into tiny labels.
3. Keep logos, photos and icons as separate assets and all meaningful labels editable. List any unavailable fonts/assets and any intentional departures. Return the working files plus a concise account of implemented behavior and remaining integrations; do not promise a pixel-identical result from the prompt alone.