Disclosure
Single styled <details>/<summary> reveal: keyboard + find-in-page work with no JS.
Live
What's included in the free plan?
Up to 5 projects, 1 GB storage, community support, and all core features.
Can I export my data?
Yes: Settings → Export emits a JSON archive with everything, no questions asked.
Example
ui.Collapsible(ui.CollapsibleConfig{Summary: "What's included?"},
html.Paragraph(html.TextConfig{}, render.Text("Up to 5 projects, 1 GB storage, …")),
)