Webflow Landing Page for App Promotion and Lead Capture

I am seeking an experienced Webflow developer to design and build a modern, professional landing page for my app. The primary goal of this landing page is to effectively promote the app and capture leads.

The landing page should clearly present the app's key features and benefits. It needs to encourage visitors to sign up or provide their email address through a prominent lead capture form. Building trust through a clean design and potentially incorporating testimonials (if available) is also important.

Key Requirements:
- The entire landing page must be built using Webflow.
- The design must be fully responsive, providing an optimal experience on both desktop and mobile devices.
- The layout should be simple, clean, and optimized for fast loading times.
- A lead capture form needs to be integrated, capable of connecting to an email service or CRM (specific integration details will be provided).
- The project should be completed within approximately 4 weeks.

I am looking for a freelancer with proven expertise in Webflow development and a strong understanding of landing page best practices for conversion optimization. Please provide examples of previous landing pages you have built in Webflow.