function main() {
  const r=$data.current;
  return <CardContent title="我的仪表">
    <HStack spacing={18}>
      <Image source="badge.png" width={64} height={64} contentMode="fit" cornerRadius={12}/>
      <VStack spacing={3}>
        <Text fontSize={44} color={$env.foreground}>{r.speed===null?'—':Math.round(r.speed)}</Text>
        <Text fontSize={12} color={$env.accent}>{r.speedUnit}</Text>
      </VStack>
    </HStack>
  </CardContent>;
}