<head>
  <meta charset="utf-8" />
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0">

  <title>{% if page.use-site-title %}{{ site.title }} {{ site.title-separator }} {{ site.description }}{% elsif page.title %}{{ page.title }}{% else %}{{ site.title }}{% endif %}</title>

  <meta name="author" content="{{ site.author.name }}" />

  {% if page.subtitle %}
  <meta name="description" content="{{ page.subtitle }}">
  {% endif %}

  <link rel="alternate" type="application/rss+xml" title="{{ site.title }} {{ site.title-separator }} {{ site.description }}" href="{{ site.baseurl }}/feed.xml" />

  {% include gtm_head.html %}
  {% include google_analytics.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 %}
      <link rel="stylesheet" href="{{ css | prepend: site.baseurl | replace: '//', '/' }}" />
    {% endfor %}
  {% endif %}

  {% if layout.common-googlefonts %}
    {% for font in layout.common-googlefonts %}
      <link rel="stylesheet" href="//fonts.googleapis.com/css?family={{ font }}" />
    {% 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 %}
      <link rel="stylesheet" href="{{ css | prepend: site.baseurl | replace: '//', '/' }}" />
    {% endfor %}
  {% endif %}

  {% if page.googlefonts %}
    {% for font in page.googlefonts %}
      <link rel="stylesheet" href="//fonts.googleapis.com/css?family={{ font }}" />
    {% endfor %}
  {% endif %}

    <!-- Facebook OpenGraph tags -->
  {% if site.fb_app_id %}
  <meta property="fb:app_id" content="{{ site.fb_app_id }}" />
  {% endif %}

  {% if page.meta-title %}
  <meta property="og:title" content="{{ page.meta-title }}" />
  {% elsif page.title %}
  <meta property="og:title" content="{{ page.title }}" />
  {% else %}
  <meta property="og:title" content="{{ site.title }}" />
  {% endif %}

   {% if page.meta-description %}
  <meta property="og:description" content="{{ page.meta-description }}">
  {% elsif page.subtitle %}
  <meta property="og:description" content="{{ page.subtitle }}">
  {% else %}
  <meta property="og:description" content="{{ page.content | strip_html | xml_escape | truncatewords: 50 }}">
  {% endif %}


  <meta property="og:type" content="website" />

  {% if page.id %}
  <meta property="og:url" content="{{ site.url }}{{ page.url }}" />
  <link rel="canonical" href="{{ site.url }}{{ page.url }}" />
  {% else %}
  <meta property="og:url" content="{{ site.url }}{{ page.url | remove: '/index.html' | remove: '.html' }}" />
  <link rel="canonical" href="{{ site.url }}{{ page.url | remove: '/index.html' | remove: '.html' }}" />
  {% endif %}

  {% if page.share-img %}
  <meta property="og:image" content="{{ page.share-img }}" />
  {% elsif site.avatar %}
  <meta property="og:image" content="{{ site.url }}{{ site.avatar }}" />
  {% endif %}


  <!-- Twitter summary cards -->
  <meta name="twitter:card" content="summary" />
  <meta name="twitter:site" content="@{{ site.author.twitter }}" />
  <meta name="twitter:creator" content="@{{ site.author.twitter }}" />

  {% if page.meta-title %}
  <meta name="twitter:title" content="{{ page.meta-title }}" />
  {% elsif page.title %}
  <meta name="twitter:title" content="{{ page.title }}" />
  {% else %}
  <meta name="twitter:title" content="{{ site.title }}" />
  {% endif %}

  {% if page.meta-description %}
  <meta name="twitter:description" content="{{ page.meta-description }}">
  {% elsif page.subtitle %}
  <meta name="twitter:description" content="{{ page.subtitle }}">
  {% else %}
  <meta name="twitter:description" content="{{ page.content | strip_html | xml_escape | truncatewords: 50 }}">
  {% endif %}

  {% if page.share-img %}
  <meta name="twitter:image" content="{{ page.share-img }}" />
  {% elsif site.avatar %}
  <meta name="twitter:image" content="{{ site.url }}{{ site.avatar }}" />
  {% endif %}

  {% if site.matomo %}
  {% include matomo.html %}
  {% endif %}

</head>
