Mantissa Design

Mantissa Design & Consultant is an architecture and engineering consultancy in Dhaka, practising since 1997. It needed a website that reflects nearly three decades of practice and explains its full range of services. I designed and built the new mantissadesign.com on Next.js 16: a cinematic, scroll-driven site that walks visitors from vision to built reality, presents eight service lines, and is structured for local search with detailed schema.org data.

Next.js 16React 19TypeScriptTailwind 4SEOVercel
On this page

Feature Highlights

An eight-stage scroll story from first sketch to finished building

  • Cinematic hero built around the line "From Vision to Built Reality"
  • Eight-stage scroll journey that follows a project from planning to handover
  • Scroll reveals built on IntersectionObserver and requestAnimationFrame
  • All motion respects prefers-reduced-motion in both CSS and JavaScript

Stack

  • Next.js 16: App Router with generated metadata, sitemap, robots and manifest.
  • React 19: Components for the scroll journey, project filter and carousels.
  • TypeScript: Typed company, service and project data.
  • Tailwind CSS 4: Utility styling on top of a custom token system.
  • EmailJS: Contact form delivery straight from the browser.
  • schema.org JSON-LD: Structured data for the firm, its services and pages.
  • Vercel: Production hosting.

Use Cases

  • Architecture and engineering firms that need to show long experience and a wide service range
  • Professional services firms competing in local search
  • Turning a long delivery process into a story visitors scroll through
  • Small teams that want a site they can update by editing data files

How to Use

  1. Visit mantissadesign.com.
  2. Scroll the homepage journey from planning to handover.
  3. Open Services to see the eight service lines.
  4. Browse Projects and filter by category.
  5. Send an enquiry from Contact.

Related projects

Let's Connect

Need a site for your practice?

I build fast, well-structured websites for professional services firms. Let's talk.

Dhruba Datta

© 2026 | All rights reserved