{% capture pagetitle %}
{%- if page.share-title -%}
{{ page.share-title | strip_html | xml_escape }}
{%- elsif page.title -%}
{{ page.title | strip_html | xml_escape }}
{%- else -%}
{{ site.title | strip_html | xml_escape }}
{%- endif -%}
{% endcapture %}
{% capture title %}
{%- if site.title and site.title-on-all-pages and (site.title != pagetitle) -%}
{{ pagetitle }} | {{ site.title }}
{%- else -%}
{{ pagetitle }}
{%- endif -%}
{% endcapture %}
{% capture description %}
{%- if page.share-description -%}
{{ page.share-description | strip_html | xml_escape }}
{%- elsif page.subtitle -%}
{{ page.subtitle | strip_html | xml_escape }}
{%- else -%}
{%- assign excerpt_length = site.excerpt_length | default: 50 -%}
{{ page.content | strip_html | xml_escape | truncatewords: excerpt_length | strip }}
{%- endif -%}
{% endcapture %}
{{ title }}
{% capture author %}
{%- if page.author -%}
{{ page.author | strip_html }}
{%- elsif site.author -%}
{{ site.author }}
{%- endif -%}
{% endcapture %}
{% if author != "" %}
{% endif %}
{% if site.mobile-theme-col %}
{% endif %}
{% if site.keywords %}
{% endif %}
{% if site.rss-description %}
{% endif %}
{% include gtag.html %}
{% include gtm_head.html %}
{% include google_analytics.html %}
{% include cloudflare_analytics.html %}
{% include mathjax.html %}
{% if layout.common-ext-css %}
{% for css in layout.common-ext-css %}
{% include ext-css.html css=css %}
{% endfor %}
{% endif %}
{% if layout.common-css %}
{% for css in layout.common-css %}
{% endfor %}
{% endif %}
{% if site.site-css %}
{% for css in site.site-css %}
{% endfor %}
{% endif %}
{% if page.ext-css %}
{% for css in page.ext-css %}
{% include ext-css.html css=css %}
{% endfor %}
{% endif %}
{% if page.css %}
{% for css in page.css %}
{% endfor %}
{% endif %}
{% if site.fb_app_id %}
{% endif %}
{% if site.title %}
{% endif %}
{%- capture img -%}
{%- if page.share-img -%}
{{ page.share-img }}
{%- elsif page.cover-img -%}
{%- if page.cover-img.first -%}
{{ page.cover-img[0].first.first }}
{%- else -%}
{{ page.cover-img }}
{%- endif -%}
{%- elsif page.thumbnail-img -%}
{{ page.thumbnail-img }}
{%- elsif site.avatar -%}
{{ site.avatar }}
{% endif %}
{%- endcapture -%}
{%- assign img=img | strip -%}
{% if img != "" %}
{% endif %}
{% if page.id %}
{% if author != "" %}
{% endif %}
{% else %}
{% endif %}
{% if img != "" and img != site.avatar %}
{% else %}
{% endif %}
{% if img != "" %}
{% endif %}
{% include matomo.html %}
{% if page.comments and site.staticman.repository and site.staticman.branch %}
{% endif %}
{% assign favicon_exists = site.static_files | where: "path", "/favicon.ico" | size %}
{% if favicon_exists == 1 %}
{% endif %}
{% if page.head-extra %}
{% for file in page.head-extra %}
{% include {{ file }} %}
{% endfor %}
{% endif %}