root = Card([locationInfo, deliveryDate, reportButton])
locationInfo = TextCallout(variant: "neutral", title: "Current location", description: "In transit to New York")
deliveryDate = TextContent(text: "Estimated delivery: Dec 15, 2025", size: "default")
reportButton = Button(label: "Report problem", action: null, variant: "secondary", type: "normal", size: "medium")