root = Card([header, uptimeSection, incidentNote])
header = CardHeader("Platform Status", "Live overview for the platform team")
uptimeSection = Card([uptimeHeading, uptimeValue, uptimeBar], "sunk")
uptimeHeading = Heading("API Uptime — This Month", "h3")
uptimeValue = TextContent("**99.98%**", "large-heavy")
uptimeBar = Progress(99.98, "Uptime")
incidentNote = Callout("info", "Most recent incident", "Resolved on May 12 at 14:32 UTC — brief auth latency spike affecting 2% of requests for 18 minutes.")