I'll create a modern, compelling website for Tough Tongue AI based on the comprehensive content you provided. Let me start by generating design inspiration to ensure we create something visually striking and professional.

I've created a comprehensive, modern landing page for Tough Tongue AI that captures the premium positioning and expertise of the platform. The design features a professional cyan-and-green color scheme, uses Space Grotesk for headings and DM Sans for body text, and includes all the key messaging from your content. The page includes sections for the hero, problem statement, features, testimonials, pricing, and a strong call-to-action, all designed to convert visitors into users while establishing credibility and trust.

Fixed the import error by importing Suspense from "react" instead of "next/navigation". The Suspense component is a React feature, not a Next.js navigation feature.

I've updated all the sign-in links, "Start Free Practice" buttons, "Get Started" buttons, and the "Try Interactive Demo" button to point to https://app.toughtongueai.com/. All buttons now use the asChild prop with anchor tags to properly link to the external app while maintaining their styling and functionality.