Keep moving

Create a self-contained SVG motion graphic in a single HTML file.

ART DIRECTION
Create a minimal interface motion study, not a screenshot of a real product. Use a pale blue background and a white rounded panel. Inside, draw two text skeleton lines and a cobalt progress indicator that expands and contracts smoothly. Label it Keep moving. Add a lime confirmation circle with a check mark. Headline: Less friction. More flow.

TECHNICAL RULES
- Use a 960 × 600 viewBox (8:5). Scale responsively without cropping.
- The loop lasts exactly 6 seconds. Use deterministic, time-based drawing with requestAnimationFrame; do not accumulate frame deltas.
- Keep all shapes and text inside the safe area. Use system sans-serif fonts and no external assets, libraries, or network requests.
- Use a static representative frame when prefers-reduced-motion is enabled, and include a visible play/pause control.
- Pause when the document is hidden.
- Return the complete HTML, CSS, and JavaScript, with no omitted sections.

DELIVERY
Make the text, colors, and example data easy to edit. Explain which values to change. The supplied reference is an original implementation, not proof that any model reproduces this prompt exactly.