Centred band

{% comment %}
CTA / centred band: the tinted band that closes a page.

Beat Phase D journey: Marketing CTA (icvoss/django-brickwork#544). Dual CTA
(primary + secondary) on the tinted band. Recolour by overriding brand tokens
only (`--bw-color-accent`, `--bw-color-surface-marketing-tint`, and the rest
of the brand-pack delta); do not fork this markup or marketing.css. See
docs/examples/brand-pack/ and docs/BRANDING.md.

The shipped _cta.html already is this, so the example is the include.

band="tint" is the default and composes --bw-color-surface-marketing-tint,
which is contrast-checked in both themes. Pass band="plain" to sit the same
content on the page surface instead, when the page already has enough bands.

A heading is REQUIRED: with no heading the component renders nothing at all
rather than an empty band. That is deliberate across this kit.

States: none of its own: see _cta.html's own header (the include this file
  wraps) for the full states/accessibility/responsive contract, unchanged
  here.
Accessibility: see _cta.html.
Responsive: see _cta.html; band="tint" and width (defaulted here to
  "contained") are the same CSS-only axes documented there.
{% endcomment %}
{% include "brickwork_marketing/components/_cta.html" with heading="Stop writing chase emails" body="Free for 30 days. No card, no setup call, no data import to sit through." primary_cta_label="Start free trial" primary_cta_href="/accounts/signup/" secondary_cta_label="Talk to us" secondary_cta_href="/contact/" %}