Fake Startup Landing Page

Create a complete single-file HTML landing page for a fictional startup called "PawPilot" — an AI-powered dog-walking service that matches dogs with nearby walkers.

Use only HTML and inline CSS — no external libraries, frameworks, fonts, or CDNs.

Include:
- A hero section with a headline, one-line subheadline, and a call-to-action button
- A features section with exactly 3 features (icon + title + short text each)
- A pricing section with exactly 3 tiers
- A footer

Make it look modern and polished. Return only the full HTML file content and nothing else.