diff --git a/dist/index.html b/dist/index.html
index 8da45a2..cc8ad75 100644
--- a/dist/index.html
+++ b/dist/index.html
@@ -8,6 +8,22 @@
   <link rel="icon" href="/logo.webp" type="image/x-icon">
   <link href="/css/bootstrap.min.css" rel="stylesheet">
   <link rel="stylesheet" href="/css/index.css">
+  <!-- Matomo -->
+  <script>
+    var _paq = window._paq = window._paq || [];
+    /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
+    _paq.push(['trackPageView']);
+    _paq.push(['enableLinkTracking']);
+    (function() {
+      var u="//matomo.yanlincs.com/";
+      _paq.push(['setTrackerUrl', u+'matomo.php']);
+      _paq.push(['setSiteId', '1']);
+      var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
+      g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
+    })();
+  </script>
+  <!-- End Matomo Code -->
+
   
 </head>
 
@@ -20,8 +36,8 @@
         <div class="col-2">
           
             
-              <a class="link-secondary header-icon mx-2 py-0 my-0 h4 d-flex align-items-center" href="mailto:s@yanlincs.com">
-                <svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill="currentColor" class="bi bi-envelope-fill" viewBox="0 0 16 16">
+              <a class="link-secondary header-icon mx-2 py-0 my-0 h4 d-flex align-items-center" href="mailto:s@yanlincs.com" aria-label="Send email to Yan Lin">
+                <svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill="currentColor" class="bi bi-envelope-fill" viewBox="0 0 16 16" aria-hidden="true">
                   <path d="M.05 3.555A2 2 0 0 1 2 2h12a2 2 0 0 1 1.95 1.555L8 8.414zM0 4.697v7.104l5.803-3.558zM6.761 8.83l-6.57 4.027A2 2 0 0 0 2 14h12a2 2 0 0 0 1.808-1.144l-6.57-4.027L8 9.586zm3.436-.586L16 11.801V4.697z"/>
                 </svg>
               </a>
@@ -34,8 +50,8 @@
         <div class="col-2 d-flex justify-content-end">
           
             
-              <a class="link-secondary header-icon mx-2 py-0 my-0 h4 d-flex align-items-center" href="https://github.com/Logan-Lin" target="_blank">
-                <svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill="currentColor" class="bi bi-github" viewBox="0 0 16 16">
+              <a class="link-secondary header-icon mx-2 py-0 my-0 h4 d-flex align-items-center" href="https://github.com/Logan-Lin" target="_blank" aria-label="Visit Yan Lin's GitHub profile (opens in new tab)">
+                <svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill="currentColor" class="bi bi-github" viewBox="0 0 16 16" aria-hidden="true">
                   <path d="M8 0C3.58 0 0 3.58 0 8c0 3.54 2.29 6.53 5.47 7.59.4.07.55-.17.55-.38 0-.19-.01-.82-.01-1.49-2.01.37-2.53-.49-2.69-.94-.09-.23-.48-.94-.82-1.13-.28-.15-.68-.52-.01-.53.63-.01 1.08.58 1.23.82.72 1.21 1.87.87 2.33.66.07-.52.28-.87.51-1.07-1.78-.2-3.64-.89-3.64-3.95 0-.87.31-1.59.82-2.15-.08-.2-.36-1.02.08-2.12 0 0 .67-.21 2.2.82.64-.18 1.32-.27 2-.27s1.36.09 2 .27c1.53-1.04 2.2-.82 2.2-.82.44 1.1.16 1.92.08 2.12.51.56.82 1.27.82 2.15 0 3.07-1.87 3.75-3.65 3.95.29.25.54.73.54 1.48 0 1.07-.01 1.93-.01 2.2 0 .21.15.46.55.38A8.01 8.01 0 0 0 16 8c0-4.42-3.58-8-8-8"/>
                 </svg>
               </a>
@@ -113,7 +129,7 @@
         <h3 class="section-title d-inline-block mb-0">
             <i class="bi bi-book"></i> Publications
         </h3>
-        <div class="flex-grow-1 mx-3" style="border-bottom: 1.5px dashed var(--border-color); height: 1px;"></div>
+        <div class="flex-grow-1 mx-3" style="border-bottom: 1px dashed var(--border-color); height: 1px;"></div>
         <a class="mb-0 link link-secondary link-underline-opacity-0 h5" href="/publications/">
             View All
         </a>
@@ -441,7 +457,7 @@
         <h3 class="section-title d-inline-block mb-0">
             <i class="bi bi-code-slash"></i> Projects
         </h3>
-        <div class="flex-grow-1 mx-3" style="border-bottom: 1.5px dashed var(--border-color); height: 1px;"></div>
+        <div class="flex-grow-1 mx-3" style="border-bottom: 1px dashed var(--border-color); height: 1px;"></div>
         <a class="mb-0 link link-secondary link-underline-opacity-0 h5" href="/projects/">
             View All
         </a>
@@ -536,7 +552,7 @@
         <h3 class="section-title d-inline-block mb-0">
             <i class="bi bi-easel"></i> Presentations
         </h3>
-        <div class="flex-grow-1 mx-3" style="border-bottom: 1.5px dashed var(--border-color); height: 1px;"></div>
+        <div class="flex-grow-1 mx-3" style="border-bottom: 1px dashed var(--border-color); height: 1px;"></div>
         <a class="mb-0 link link-secondary link-underline-opacity-0 h5" href="/presentations/">
             View All
         </a>
diff --git a/dist/presentations/index.html b/dist/presentations/index.html
index 989892a..b954e9f 100644
--- a/dist/presentations/index.html
+++ b/dist/presentations/index.html
@@ -8,6 +8,22 @@
   <link rel="icon" href="/logo.webp" type="image/x-icon">
   <link href="/css/bootstrap.min.css" rel="stylesheet">
   <link rel="stylesheet" href="/css/index.css">
+  <!-- Matomo -->
+  <script>
+    var _paq = window._paq = window._paq || [];
+    /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
+    _paq.push(['trackPageView']);
+    _paq.push(['enableLinkTracking']);
+    (function() {
+      var u="//matomo.yanlincs.com/";
+      _paq.push(['setTrackerUrl', u+'matomo.php']);
+      _paq.push(['setSiteId', '1']);
+      var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
+      g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
+    })();
+  </script>
+  <!-- End Matomo Code -->
+
   
 </head>
 
@@ -20,8 +36,8 @@
         <div class="col-2">
           
             
-              <a class="link-secondary header-icon mx-2 py-0 my-0 h4 d-flex align-items-center" href="/">
-                <svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill="currentColor" class="bi bi-house-fill" viewBox="0 0 16 16">
+              <a class="link-secondary header-icon mx-2 py-0 my-0 h4 d-flex align-items-center" href="/" aria-label="Go to homepage">
+                <svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill="currentColor" class="bi bi-house-fill" viewBox="0 0 16 16" aria-hidden="true">
                   <path d="M8.707 1.5a1 1 0 0 0-1.414 0L.646 8.146a.5.5 0 0 0 .708.708L8 2.207l6.646 6.647a.5.5 0 0 0 .708-.708L13 5.793V2.5a.5.5 0 0 0-.5-.5h-1a.5.5 0 0 0-.5.5v1.293z"/>
                   <path d="m8 3.293 6 6V13.5a1.5 1.5 0 0 1-1.5 1.5h-9A1.5 1.5 0 0 1 2 13.5V9.293z"/>
                 </svg>
diff --git a/dist/projects/index.html b/dist/projects/index.html
index 7cf0e63..a2e0cce 100644
--- a/dist/projects/index.html
+++ b/dist/projects/index.html
@@ -8,6 +8,22 @@
   <link rel="icon" href="/logo.webp" type="image/x-icon">
   <link href="/css/bootstrap.min.css" rel="stylesheet">
   <link rel="stylesheet" href="/css/index.css">
+  <!-- Matomo -->
+  <script>
+    var _paq = window._paq = window._paq || [];
+    /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
+    _paq.push(['trackPageView']);
+    _paq.push(['enableLinkTracking']);
+    (function() {
+      var u="//matomo.yanlincs.com/";
+      _paq.push(['setTrackerUrl', u+'matomo.php']);
+      _paq.push(['setSiteId', '1']);
+      var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
+      g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
+    })();
+  </script>
+  <!-- End Matomo Code -->
+
   
 </head>
 
@@ -20,8 +36,8 @@
         <div class="col-2">
           
             
-              <a class="link-secondary header-icon mx-2 py-0 my-0 h4 d-flex align-items-center" href="/">
-                <svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill="currentColor" class="bi bi-house-fill" viewBox="0 0 16 16">
+              <a class="link-secondary header-icon mx-2 py-0 my-0 h4 d-flex align-items-center" href="/" aria-label="Go to homepage">
+                <svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill="currentColor" class="bi bi-house-fill" viewBox="0 0 16 16" aria-hidden="true">
                   <path d="M8.707 1.5a1 1 0 0 0-1.414 0L.646 8.146a.5.5 0 0 0 .708.708L8 2.207l6.646 6.647a.5.5 0 0 0 .708-.708L13 5.793V2.5a.5.5 0 0 0-.5-.5h-1a.5.5 0 0 0-.5.5v1.293z"/>
                   <path d="m8 3.293 6 6V13.5a1.5 1.5 0 0 1-1.5 1.5h-9A1.5 1.5 0 0 1 2 13.5V9.293z"/>
                 </svg>
diff --git a/dist/publications/index.html b/dist/publications/index.html
index 4a27d7d..a63f7d6 100644
--- a/dist/publications/index.html
+++ b/dist/publications/index.html
@@ -8,6 +8,22 @@
   <link rel="icon" href="/logo.webp" type="image/x-icon">
   <link href="/css/bootstrap.min.css" rel="stylesheet">
   <link rel="stylesheet" href="/css/index.css">
+  <!-- Matomo -->
+  <script>
+    var _paq = window._paq = window._paq || [];
+    /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
+    _paq.push(['trackPageView']);
+    _paq.push(['enableLinkTracking']);
+    (function() {
+      var u="//matomo.yanlincs.com/";
+      _paq.push(['setTrackerUrl', u+'matomo.php']);
+      _paq.push(['setSiteId', '1']);
+      var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
+      g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
+    })();
+  </script>
+  <!-- End Matomo Code -->
+
   
 </head>
 
@@ -20,8 +36,8 @@
         <div class="col-2">
           
             
-              <a class="link-secondary header-icon mx-2 py-0 my-0 h4 d-flex align-items-center" href="/">
-                <svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill="currentColor" class="bi bi-house-fill" viewBox="0 0 16 16">
+              <a class="link-secondary header-icon mx-2 py-0 my-0 h4 d-flex align-items-center" href="/" aria-label="Go to homepage">
+                <svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill="currentColor" class="bi bi-house-fill" viewBox="0 0 16 16" aria-hidden="true">
                   <path d="M8.707 1.5a1 1 0 0 0-1.414 0L.646 8.146a.5.5 0 0 0 .708.708L8 2.207l6.646 6.647a.5.5 0 0 0 .708-.708L13 5.793V2.5a.5.5 0 0 0-.5-.5h-1a.5.5 0 0 0-.5.5v1.293z"/>
                   <path d="m8 3.293 6 6V13.5a1.5 1.5 0 0 1-1.5 1.5h-9A1.5 1.5 0 0 1 2 13.5V9.293z"/>
                 </svg>
diff --git a/templates/base.html b/templates/base.html
index 4357def..daa60dd 100644
--- a/templates/base.html
+++ b/templates/base.html
@@ -8,6 +8,22 @@
   <link rel="icon" href="/logo.webp" type="image/x-icon">
   <link href="/css/bootstrap.min.css" rel="stylesheet">
   <link rel="stylesheet" href="/css/index.css">
+  <!-- Matomo -->
+  <script>
+    var _paq = window._paq = window._paq || [];
+    /* tracker methods like "setCustomDimension" should be called before "trackPageView" */
+    _paq.push(['trackPageView']);
+    _paq.push(['enableLinkTracking']);
+    (function() {
+      var u="//matomo.yanlincs.com/";
+      _paq.push(['setTrackerUrl', u+'matomo.php']);
+      _paq.push(['setSiteId', '1']);
+      var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];
+      g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s);
+    })();
+  </script>
+  <!-- End Matomo Code -->
+
   {% block extra_head %}{% endblock %}
 </head>
 
@@ -22,14 +38,14 @@
         <div class="col-2">
           {% block header_left %}
             {% if is_home_page %}
-              <a class="link-secondary header-icon mx-2 py-0 my-0 h4 d-flex align-items-center" href="mailto:s@yanlincs.com">
-                <svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill="currentColor" class="bi bi-envelope-fill" viewBox="0 0 16 16">
+              <a class="link-secondary header-icon mx-2 py-0 my-0 h4 d-flex align-items-center" href="mailto:s@yanlincs.com" aria-label="Send email to Yan Lin">
+                <svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill="currentColor" class="bi bi-envelope-fill" viewBox="0 0 16 16" aria-hidden="true">
                   <path d="M.05 3.555A2 2 0 0 1 2 2h12a2 2 0 0 1 1.95 1.555L8 8.414zM0 4.697v7.104l5.803-3.558zM6.761 8.83l-6.57 4.027A2 2 0 0 0 2 14h12a2 2 0 0 0 1.808-1.144l-6.57-4.027L8 9.586zm3.436-.586L16 11.801V4.697z"/>
                 </svg>
               </a>
             {% else %}
-              <a class="link-secondary header-icon mx-2 py-0 my-0 h4 d-flex align-items-center" href="/">
-                <svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill="currentColor" class="bi bi-house-fill" viewBox="0 0 16 16">
+              <a class="link-secondary header-icon mx-2 py-0 my-0 h4 d-flex align-items-center" href="/" aria-label="Go to homepage">
+                <svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill="currentColor" class="bi bi-house-fill" viewBox="0 0 16 16" aria-hidden="true">
                   <path d="M8.707 1.5a1 1 0 0 0-1.414 0L.646 8.146a.5.5 0 0 0 .708.708L8 2.207l6.646 6.647a.5.5 0 0 0 .708-.708L13 5.793V2.5a.5.5 0 0 0-.5-.5h-1a.5.5 0 0 0-.5.5v1.293z"/>
                   <path d="m8 3.293 6 6V13.5a1.5 1.5 0 0 1-1.5 1.5h-9A1.5 1.5 0 0 1 2 13.5V9.293z"/>
                 </svg>
@@ -43,8 +59,8 @@
         <div class="col-2 d-flex justify-content-end">
           {% block header_right %}
             {% if is_home_page %}
-              <a class="link-secondary header-icon mx-2 py-0 my-0 h4 d-flex align-items-center" href="https://github.com/Logan-Lin" target="_blank">
-                <svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill="currentColor" class="bi bi-github" viewBox="0 0 16 16">
+              <a class="link-secondary header-icon mx-2 py-0 my-0 h4 d-flex align-items-center" href="https://github.com/Logan-Lin" target="_blank" aria-label="Visit Yan Lin's GitHub profile (opens in new tab)">
+                <svg xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill="currentColor" class="bi bi-github" viewBox="0 0 16 16" aria-hidden="true">
                   <path d="M8 0C3.58 0 0 3.58 0 8c0 3.54 2.29 6.53 5.47 7.59.4.07.55-.17.55-.38 0-.19-.01-.82-.01-1.49-2.01.37-2.53-.49-2.69-.94-.09-.23-.48-.94-.82-1.13-.28-.15-.68-.52-.01-.53.63-.01 1.08.58 1.23.82.72 1.21 1.87.87 2.33.66.07-.52.28-.87.51-1.07-1.78-.2-3.64-.89-3.64-3.95 0-.87.31-1.59.82-2.15-.08-.2-.36-1.02.08-2.12 0 0 .67-.21 2.2.82.64-.18 1.32-.27 2-.27s1.36.09 2 .27c1.53-1.04 2.2-.82 2.2-.82.44 1.1.16 1.92.08 2.12.51.56.82 1.27.82 2.15 0 3.07-1.87 3.75-3.65 3.95.29.25.54.73.54 1.48 0 1.07-.01 1.93-.01 2.2 0 .21.15.46.55.38A8.01 8.01 0 0 0 16 8c0-4.42-3.58-8-8-8"/>
                 </svg>
               </a>
diff --git a/templates/index.html b/templates/index.html
index 656d91a..505a740 100644
--- a/templates/index.html
+++ b/templates/index.html
@@ -34,7 +34,7 @@ block content %}
         <h3 class="section-title d-inline-block mb-0">
             <i class="bi bi-book"></i> Publications
         </h3>
-        <div class="flex-grow-1 mx-3" style="border-bottom: 1.5px dashed var(--border-color); height: 1px;"></div>
+        <div class="flex-grow-1 mx-3" style="border-bottom: 1px dashed var(--border-color); height: 1px;"></div>
         <a class="mb-0 link link-secondary link-underline-opacity-0 h5" href="/publications/">
             View All
         </a>
@@ -64,7 +64,7 @@ block content %}
         <h3 class="section-title d-inline-block mb-0">
             <i class="bi bi-code-slash"></i> Projects
         </h3>
-        <div class="flex-grow-1 mx-3" style="border-bottom: 1.5px dashed var(--border-color); height: 1px;"></div>
+        <div class="flex-grow-1 mx-3" style="border-bottom: 1px dashed var(--border-color); height: 1px;"></div>
         <a class="mb-0 link link-secondary link-underline-opacity-0 h5" href="/projects/">
             View All
         </a>
@@ -88,7 +88,7 @@ block content %}
         <h3 class="section-title d-inline-block mb-0">
             <i class="bi bi-easel"></i> Presentations
         </h3>
-        <div class="flex-grow-1 mx-3" style="border-bottom: 1.5px dashed var(--border-color); height: 1px;"></div>
+        <div class="flex-grow-1 mx-3" style="border-bottom: 1px dashed var(--border-color); height: 1px;"></div>
         <a class="mb-0 link link-secondary link-underline-opacity-0 h5" href="/presentations/">
             View All
         </a>