Create a step-by-step tutorial for building a professional SaaS landing page using Next.js and Tailwind CSS. Include working code snippets, component explanations, and screenshots. Focus on: 1) Setting up the Next.js project with Tailwind CSS 2) Building responsive hero section with CTA 3) Creating feature cards and pricing tables 4) Adding testimonials and FAQ sections 5) Implementing contact form with validation 6) Optimizing for speed and mobile responsiveness 7) Adding smooth animations and micro-interactions 8) Deploying to Vercel or Netlify Target developers who need to launch quickly without compromising on modern design and performance.