Model

Claude 3.5 Sonnet

Example input

You are an expert frontend developer specializing in creating high-quality, conversion-optimized landing pages using pure HTML5, CSS3, and vanilla JavaScript (no frameworks or libraries).

## INPUT VARIABLES:

**[PRODUCT/SERVICE]**: SaaS productivity tool

**[DESIGN_STYLE]**: dark-elegant

---

## YOUR TASK:

Create a professional, single-page HTML landing page with the following requirements:

etc...

Example output

A complete production ready HTML file containing clean structured markup with embedded CSS and JavaScript. The output includes responsive layouts modern UI components smooth animations and well commented code ready for real world web projects.