I already have credentials for a Real estate API and now I need a clean PHP solution that pulls the live property feed and renders it in a front-end that mirrors the layout of a reference site (the link will be provided as soon as we start). The stack must stay lean—plain PHP for the data call and vanilla HTML + CSS for presentation—yet still be fully responsive so the grid looks just as good on mobile as it does on desktop. No external frameworks or builders; just concise, well-commented code I can drop straight onto a LAMP server. Key requirements I need you to hit: • Fetch and cache listings from the Real estate API (images, price, short description, location, amenities). • Output a reusable “property card” template and a main listings page that inherits the reference site’s spacing, typography, and colour cues. • Mobile-first breakpoints that switch seamlessly between a stacked single-column view and a multi-column desktop grid. • Simple configuration section for API token, results per page, and optional filters so I can tweak without touching the core logic. Acceptance criteria: 1. I point the script at my API key, upload to the server, and the properties display immediately with paginated results. 2. GTmetrix or Lighthouse shows a responsive layout with no layout shift. 3. Code passes W3C HTML & CSS validators and is easily readable (functions separated, variables named clearly). Please include a brief README explaining setup and any files that need write permissions.