Build out skeleton of Single Page Website using Spectra Pro & Astra (Mock-up complete)

I have a single-page WordPress website that I would like built using Astra Pro and Spectra Pro. I do not require content creation, branding or design work. The website structure, content direction and visual style have already been developed, and a detailed homepage mockup will be supplied. The goal is to create a clean, responsive and reusable framework that closely follows the supplied design. The site will be full-width, with most content displayed within constrained/boxed containers. It will include sections for: Hero Services Overview Process Timeline Detailed Services Portfolio FAQ Contact (via Pixieset embed code) Footer Your focus: Building the page structure using Astra Pro and Spectra Pro Creating responsive containers and layouts Establishing consistent spacing, alignment and visual hierarchy Setting up global typography styles Configuring buttons, cards and reusable section templates Setting up menu navigation and section links Ensuring the site works well across desktop, tablet and mobile devices Implementing the supplied design with attention to spacing, proportions and overall presentation My focus: Final copy and content Icon creation Photography and imagery SEO and image optimisation Portfolio updates and ongoing refinements Important: I am looking for a WordPress builder who is experienced with Astra Pro and Spectra Pro. I am not looking for a website designer. The design direction, content structure and page mockup will be supplied. The primary objective is to build a polished, responsive foundation that I can continue to manage and expand myself. Please provide examples of websites built using Astra Pro and Spectra Pro, and briefly explain your approach to responsive layouts and reusable templates.