{% comment %}
The sign in the value picks the arrow, on the server, so the card reads
correctly before any JavaScript runs. There is no green in the palette and this
is not the place to invent one: down is destructive, up is plain foreground,
and a dashboard that wants green passes it in as a class.
{% endcomment %}
{% if '-' in value %}
{% elif value == '0' %}
{% else %}
{% endif %}
{{ value }}
{% if label %}
{{ label }}
{% endif %}
{{ slot }}