Responsive Website Development for Company Showcase

I need a clean, modern and responsive website to showcase my company’s products and services.

Requirements:
• Product catalogue with images, short and long descriptions, and videos
• Separate service pages
• Easy-to-manage CMS so I can add and edit products/services myself
• WordPress, Webflow, or similar CMS
• Contact form connected to my email
• Social media links
• Mobile, tablet and desktop responsive
• Fast loading and basic SEO
• No shopping cart or online payment required
• Easy navigation and professional modern design
• Admin guide/video explaining how to update the website
• Short post-launch support for minor changes

Please provide examples of similar websites you have built and your estimated cost and delivery time.