You are an elite SaaS UI/UX engineer. Create a complete, single-file, production-ready HTML5 landing page for an "AI SaaS & Workflow Automation Platform" (named "Pulse AI"). TECHNICAL REQUIREMENTS: 1. Include Tailwind CSS CDN: 2. Google Fonts: Inter and JetBrains Mono. 3. Modern high-tech monochromatic aesthetic (pure black/zinc-950, deep zinc-900 surfaces, zinc-800 borders, subtle purple/indigo highlights). 4. Fully responsive mobile & desktop layout. SECTIONS TO INCLUDE: 1. Header: Sleek navbar with announcement pill ("✨ Introducing Pulse 2.0 Engine"), product links (Features, Integrations, Pricing, Docs), and "Start Free Trial" CTA. 2. Hero: High-converting headline ("Automate 80% of Repetitive Operations with Autonomous AI"), live status pill ("🟢 99.99% Uptime SLA"), dual CTAs ("Get Started Free", "Request Enterprise Demo"), and an interactive Dashboard UI mockup preview. 3. Metrics & Proof Bar: 10M+ Tasks Automated, 4.9/5 Rating, 12,000+ Teams. 4. Core Feature Matrix: 6 cards featuring AI Agent Workflows, Real-Time Data Sync, Multi-Model LLM Routing, Enterprise RBAC Security, Webhooks API, and Predictive Analytics. 5. Interactive Pricing Tier Matrix: 3 cards (Starter $29/mo, Pro $79/mo, Enterprise Custom) with feature checklists and toggle switch (Monthly / Annual with 20% discount badge). 6. Enterprise Integrations Grid: Slack, GitHub, Notion, Stripe, Salesforce, Figma. 7. Interactive FAQ Accordion: 5 common questions. 8. Native Lead Demo & Trial Form: - Form markup:

- Hidden inputs: - Fields: Work Email, Full Name, Company Name, Team Size dropdown (1-10, 11-50, 50+), and Use Case note. - High-converting submit button. 9. Footer: Product links, developer docs, status link, and social icons. Return ONLY clean, valid, standalone HTML in an document.