Give the header scrolled colours and equal card heights in 1.11.1

Cards, quotes and call-to-action bands side by side in a row are equal in
height again: the stacking margin meant for a column no longer applies inside
a row. The header can carry a second set of colours for the scrolled page,
the Flatsome transparent header: a "scrolled" state next to "hover", limited
to colours, shadow and opacity, marked by a small script only where it is
used, plus a setting that lets the header float over the first section.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

templates/page.html.twig

@@ -51,6 +51,7 @@
     {% if needsTabs|default(false) %}<script src="/assets/tabs.js?v={{ kant_version() }}" defer></script>{% endif %}
     {% if needsSlider|default(false) %}<script type="module" src="/assets/slider.js?v={{ kant_version() }}"></script>{% endif %}
     {% if needsMotion|default(false) %}<script type="module" src="/assets/motion.js?v={{ kant_version() }}"></script>{% endif %}
+    {% if needsScrolled|default(false) %}<script type="module" src="/assets/scrolled.js?v={{ kant_version() }}"></script>{% endif %}
     {% if needsZoom|default(false) %}<script src="/assets/lightbox.js?v={{ kant_version() }}" defer></script>{% endif %}
     {# Own scripts of this page, as a file. Never rendered in the editor preview: the preview must
        show the layout, not run code that could change the page under the editor's hands. #}
@@ -73,7 +74,7 @@
     {# Header and footer are block documents like any page, so they are built from elements
        instead of being written into this template. #}
     {% if areas.header|default(null) %}
-    <header class="site-header{{ siteSettings.load().stickyHeader ? ' is-sticky' : '' }}">
+    <header class="site-header{{ siteSettings.load().stickyHeader ? ' is-sticky' : '' }}{{ siteSettings.load().headerOverlay ? ' is-overlay' : '' }}">
         {% for block in areas.header.blocks %}{% include 'blocks/block.html.twig' with {block: block, editing: editing|default(false), postLists: {}, forms: {}, breadcrumbs: [], navigation: navigation|default({}), sections: sections|default({}), richText: areas.header.schemaVersion|default(1) >= 12, richHeadings: areas.header.schemaVersion|default(1) >= 17, eagerImage: eagerImage|default(null), inHeader: true} only %}{% endfor %}
     </header>
     {% endif %}