Respond with a single complete, self-contained HTML document and nothing else. No markdown fences, no explanation. Inline all CSS and JavaScript. Do not reference any external resource — no CDN scripts, no external stylesheets, no remote fonts or images. The document must render correctly offline.
tokens and cost
input
178
cached input
0
output
3793
reasoning
291
total
3971
cost
$0.0034
rates
$0.435 in / $0.87 out per 1M tokens (cached in $0.004), captured 29 Jul 2026