Interactive Civil Engineering Website

I need an interactive web presence that not only presents my civil-engineering expertise in building design and 3D rendering but also gives visitors real-time ways to connect, explore past projects, and start new ones with me directly from the site.

Key interactive elements to build:
• Live chat support that works smoothly on desktop and mobile, so prospects can reach me instantly.
• Virtual tours of selected projects—think 360° walkthroughs or embedded 3D models—so clients can experience the quality of my work.
• A secure client project-management portal where each client can log in, view milestones, exchange files, and track progress.

Client-input functionality:
• Project requirements submission form that lets users upload drawings, photos, or briefings and choose service options.
• Custom quote generator that pulls data from the submission and returns an estimated fee range on the spot.
• Feedback and review system so completed-project clients can rate my service and leave testimonials.

The finished site must be:
• Fully responsive and optimized for speed.
• Easy for me to update—preferably through a familiar CMS or clear hand-off documentation.
• Integrated with analytics to track user behaviour and conversion.
• Ready for HTTPS launch on my chosen host.

Deliver everything from design mock-ups and source files to a live, tested site. Once it meets the criteria above and I can manage content myself, the project will be considered complete.
i have exiting domain for the same