Compact Educational Site Creation

I need a clean, responsive website that captures the overall look-and-feel of https://www.matrix.edu.au/ while being only about 10–20 % of its size. The site is purely educational and informational—no e-commerce, no payment gateways, and no login or registration features. We need the dropwdown menus to look the same as this, covering the full page

Core content
• Home page that mirrors the modern aesthetic and clear navigation of the reference site.
• A “Courses & Programs” section where I can list offerings and outline key details (syllabus overviews, schedules, simple enquiry links).
• Supporting pages for basic “About” and contact information.

Scope and expectations
• Visual style should echo the reference site’s typography, colour palette, and spacious layout but remain lightweight in page count.
• Built on a platform that lets me add or edit text, images, and course blocks easily—WordPress, Webflow, or an equivalent CMS is fine as long as it’s intuitive.
• Mobile-first, standards-compliant code, fast load times, and basic on-page SEO best practices included.
• I will supply final words and images; placeholders are acceptable during development.
• Final hand-off: fully deployed site plus all source files and clear instructions for future edits.

If this sounds straightforward to you, tell me which CMS or stack you prefer and how many days you’ll need from kickoff to launch.