diff --git a/src/components/Icon/IconHamburger.global.vue b/src/components/Icon/IconHamburger.global.vue
new file mode 100644
index 0000000..0b04ede
--- /dev/null
+++ b/src/components/Icon/IconHamburger.global.vue
@@ -0,0 +1,19 @@
+<template>
+  <svg
+    xmlns="http://www.w3.org/2000/svg"
+    class="h-6 w-6"
+    fill="none"
+    viewBox="0 0 24 24"
+    stroke="currentColor"
+    stroke-width="2"
+  >
+    <path
+      stroke-linecap="round"
+      stroke-linejoin="round"
+      d="M4 6h16M4 12h16M4 18h16"
+    />
+  </svg>
+</template>
+
+<script setup>
+</script>
\ No newline at end of file
diff --git a/src/components/Layout/LayoutHeader.vue b/src/components/Layout/LayoutHeader.vue
index 71eb2fe..acfdc49 100644
--- a/src/components/Layout/LayoutHeader.vue
+++ b/src/components/Layout/LayoutHeader.vue
@@ -1,6 +1,7 @@
 <template>
   <div 
     class="
+      relative
       bg-header
       border-base-200
       px-2
@@ -33,38 +34,8 @@
         </span>
       </a>
 
-      <button
-        type="button"
-        class="inline-flex items-center p-2 ml-3 text-sm text-gray-500 rounded-lg md:hidden hover:bg-gray-100 focus:outline-none focus:ring-2 focus:ring-gray-200 dark:text-gray-400 dark:hover:bg-gray-700 dark:focus:ring-gray-600 print:hidden"
-        aria-controls="mobile-menu-2"
-        aria-expanded="false"
-      >
-        <span class="sr-only">Open main menu</span>
-        <svg
-          class="w-6 h-6"
-          fill="currentColor"
-          viewBox="0 0 20 20"
-          xmlns="http://www.w3.org/2000/svg"
-        >
-          <path
-            fill-rule="evenodd"
-            d="M3 5a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM3 10a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM3 15a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1z"
-            clip-rule="evenodd"
-          />
-        </svg>
-        <svg
-          class="hidden w-6 h-6"
-          fill="currentColor"
-          viewBox="0 0 20 20"
-          xmlns="http://www.w3.org/2000/svg"
-        >
-          <path
-            fill-rule="evenodd"
-            d="M4.293 4.293a1 1 0 011.414 0L10 8.586l4.293-4.293a1 1 0 111.414 1.414L11.414 10l4.293 4.293a1 1 0 01-1.414 1.414L10 11.414l-4.293 4.293a1 1 0 01-1.414-1.414L8.586 10 4.293 5.707a1 1 0 010-1.414z"
-            clip-rule="evenodd"
-          />
-        </svg>
-      </button>
+      <NavbarMobile />
+
       <div class="relative hidden lg:flex items-center ml-auto">
         <nav class="text-sm leading-6 font-semibold">
           <ul class="flex space-x-8">
@@ -92,9 +63,9 @@
 
 <script setup>
 import SwitchTheme from '../SwitchTheme.vue'
+import NavbarMobile from '../Navbar/NavbarMobile.vue'
 
 const {
-  header_link_class,
   header_links,
   header_logo_text,
   header_logo_url
diff --git a/src/components/Navbar/NavbarMobile.vue b/src/components/Navbar/NavbarMobile.vue
new file mode 100644
index 0000000..ae91c9f
--- /dev/null
+++ b/src/components/Navbar/NavbarMobile.vue
@@ -0,0 +1,69 @@
+<template>
+  <button
+    type="button"
+    class="
+      inline-flex
+      items-center
+      p-2 z-50
+      ml-3
+      text-sm
+      text-primary-content
+      rounded-lg
+      md:hidden
+      print:hidden"
+    aria-controls="mobile-menu"
+    aria-expanded="false"
+    @click="toggleMenu"
+  >
+    <span class="sr-only">Open main menu</span>
+    <IconClose v-if="isMenuVisible" />
+    <IconHamburger v-else />
+  </button>
+
+  <AnimationOpacity>
+    <div
+      v-if="isMenuVisible"
+      class="
+        absolute
+        top-full
+        left-0
+        w-full
+        z-50
+        bg-base-foreground
+        block
+        md:hidden
+        print:hidden"
+    >
+      <nav class="font-normal">
+        <ul class="flex flex-col m-0 p-0">
+          <li
+            v-for="(item, index) in header_links"
+            :key="index"
+            class="border-b"
+          >
+            <router-link
+              :to="item.link"
+              class="text-base-content w-full p-4 block box-border"
+            >
+              {{ item.label }}
+            </router-link>
+          </li>
+          <li>
+            <SwitchTheme class="text-primary-content" />
+          </li>
+        </ul>
+      </nav>
+    </div>
+  </AnimationOpacity>
+</template>
+
+<script setup>
+import { ref } from 'vue'
+import SwitchTheme from '../SwitchTheme.vue'
+
+const { header_links } = __APP_ENV__
+const isMenuVisible = ref(false)
+
+const toggleMenu = () => { isMenuVisible.value = !isMenuVisible.value }
+
+</script>
\ No newline at end of file
diff --git a/src/components/VSpinner.global.vue b/src/components/VSpinner.global.vue
index b093bf9..d42d917 100644
--- a/src/components/VSpinner.global.vue
+++ b/src/components/VSpinner.global.vue
@@ -1,92 +1,99 @@
 <template>
-  <transition name="fade">
-    <div 
-      ref="spinnerElement"
-      class="box-spinner mx-spinner absolute bg-white dark:bg-black opacity-90"
-      :style="cssProperties"
+  <div 
+    ref="spinnerElement"
+    class="
+      box-spinner
+      mx-spinner
+      absolute
+      bg-base-foreground
+      opacity-90
+      h-full
+      flex
+      items-center
+    "
+    :style="cssProperties"
+  >
+    <div
+      class="tw-spinner"
+      :class="[`tw-spinner-${spinnerPosition}`]"
     >
+      <svg
+        v-if="showSpinner"
+        :style="logoSize"
+        version="1.1"
+        xmlns="http://www.w3.org/2000/svg"
+        xmlns:xlink="http://www.w3.org/1999/xlink"
+        x="0px"
+        y="0px"
+        viewBox="0 0 194.6 200"
+        style="enable-background:new 0 0 194.6 200;"
+        xml:space="preserve"
+      >
+        <path
+          id="LeftTop"
+          d="M14.2,63.1C24.3,63.1,28,76.3,28,76.3s5,15.5,15.3,15.5c7.7,0,9.4-6.3,9.8-9.1c0-0.1,0-0.2,0-0.4s0-0.5,0.1-0.8
+            c0-0.1,0-0.1,0-0.2c0.3-2-0.8-4-2.7-4.8l0,0c-3.1-1.1-5.9-3-8-5.6c-6.4-7.4-3-17,4.5-23.6c-3.5-4-8-8.7-12-10.8
+            c-8.7-4.6-15.7,2.6-16.2,3.2L18.7,40c-0.6,0.8-1.2,1.6-1.8,2.5l-0.1,0.1c-0.6,0.9-1.2,1.8-1.8,2.7L15,45.4c-0.5,0.8-1,1.6-1.5,2.4
+            l-0.3,0.5c-1,1.8-2,3.6-3,5.5L10,54.3c-0.4,0.9-0.9,1.8-1.3,2.7l-0.1,0.1C8.2,58,7.8,59,7.4,59.9l-0.2,0.5c-0.3,0.8-0.6,1.5-0.9,2.3
+            l-0.2,0.6c-0.4,1-0.7,1.9-1,2.9L5,66.7c-0.1,0.3-0.2,0.5-0.2,0.8C7.1,64.7,10.5,63.1,14.2,63.1z"
+        />
+        <path
+          id="Head"
+          d="M36.2,33c5.3,1.8,11.4,6.8,15.7,11c0.5-0.3,1.1-0.6,1.6-0.9c2.3-1.2,4.7-2.1,7.2-2.7
+            c-2.4-4.9-5.6-12.8-4.9-18.3c1.4-11.2,13.6-12,13.6-12S58.3,12.5,59,22.9c0.3,5,4.7,12.5,7.5,16.8c7-0.1,13,2.7,15.8,8
+            c0.3,0.5,0.5,1.1,0.7,1.6l0,0c0.5,1,1.3,1.9,2.3,2.4c3.6,1.2,7.6,2.5,11.7,4.2c5.8,2.3,11.5,5,17,8.1c0.5,0.2,1,0,1.2-0.5
+            c0.1-0.3,0.1-0.7-0.2-0.9c-27.2-26.1-8-36.3-8-36.3c-9.8,14.2,6.6,24.5,25.5,35.1c16.6,9.3,28.4,19.5,41.3,12.7
+            c6.4-3.4,1.9-11-1-15.2c-2.2-2.9-4-6-5.6-9.2c-1-2.1-1.3-4.4-0.8-6.6c0.7-3.1-0.4-6.8-2.8-10.5c-1.8-2.8-5.1-5.7-7.6-7.6
+            c-1.6-1.3-3.1-2.7-4.3-4.4c-9-12.6-32.2-17.9-32.2-17.9l0,0C97.5-2.6,74.3,0.1,54,10.2l0,0c-6.9,3.5-13.5,7.7-19.4,12.7l-0.8,0.6
+            c-1.4,1.2-2.8,2.5-4.2,3.8l0,0c-0.8,0.8-1.6,1.5-2.3,2.3l0,0c-1.5,1.6-3,3.2-4.4,4.9l-0.2,0.2l-0.4,0.5C25.2,32.8,29.6,30.9,36.2,33
+            z M145.8,33.9c3.9-1.7,8.5,0.1,10.2,4c0.6,1.3,0.8,2.7,0.6,4c-2.5,1.2-5.5,0.9-7.7-0.9C146.5,39.5,145.3,36.7,145.8,33.9L145.8,33.9
+            z"
+        />
+        <path
+          id="LeftMid"
+          d="M53.2,106.9c-0.2-2-0.4-4-0.4-6.3c-2.3,1-4.7,1.5-7.2,1.5c-19,0-19.5-18.8-26.2-29.2
+            c-7-10.8-16.8,0.9-17.8,7.2c0,0.3-0.1,0.5-0.1,0.7c-0.1,0.6-0.2,1.3-0.3,1.9C1,83.1,1,83.4,1,83.6c-0.1,0.8-0.2,1.6-0.3,2.3
+            c0,0.3-0.1,0.5-0.1,0.8c-0.1,1-0.2,2.1-0.3,3.1c0,0.1,0,0.2,0,0.3c-0.1,0.9-0.2,1.9-0.2,2.8c0,0.3,0,0.6,0,0.9C0,94.9,0,95.8,0,96.7
+            c0,0.1,0,0.2,0,0.3s0,0.1,0,0.1s0,0.1,0,0.1c0,0.4,0,0.8,0,1.2s0,0.8,0,1.2c0,0.6,0,1.2,0.1,1.7c0,0.2,0,0.5,0,0.7
+            c1.5,30.7,17.5,58.9,43,76c-8-7.8-12.7-17.8-12.7-28.6c0-13.4,7.3-26,19.1-34.4C52,113.2,53.5,110.1,53.2,106.9z"
+        />
+        <path
+          id="LeftBottom"
+          d="M128.3,170c-5.8,2.4-12,3.9-18.3,4.4c-1.1,0.1-2.2,0.1-3.3,0.1c-12.3,0-28.4-4.8-40.7-25.3
+            l-1.6-2.7c-1.9,2.7-2.9,6-2.9,9.3c0,13.9,16.6,26.5,36.7,26.5c5.4,0.1,10.7-0.6,15.9-2c-4.6,2.9-13.8,5.6-21.9,5.6
+            C69.2,186,50,170.8,50,152.7c0.1-6.3,2.1-12.5,5.8-17.6c1.5-2.1,1.9-4.8,1.1-7.2l0,0c-10.5,6.1-17,15.4-17,26.6
+            c0,17.2,15.3,31.9,37,37.9c1.2,0.3,2.5,0.5,3.7,0.7c15.6,2.6,29.5-0.1,38.9-9.1C123.5,180.1,126.5,175.3,128.3,170z"
+        />
+        <path
+          id="Tail"
+          class="st0"
+          d="M171,33.8c28,39.3,18.8,93.8-20.5,121.8c-2.4,1.7-4.9,3.3-7.5,4.8l-0.2,0.2c0-0.4,0-0.9,0.1-1.3
+            c0.6-3.9,2.1-7.6,4.4-10.8c7.5-10.7,12.4-27-0.3-48.1c-7-11.6-21.7-28-51.7-40.1c-4.1-1.7-8.1-3.1-11.8-4.2L82,55.6l-0.2-0.1
+            c-1.1-0.3-2.1-0.6-3.1-0.9h-0.2l-2.9-0.8h-0.1l-1.3-0.3h-0.1l-2.6-0.6h-0.1l-2.3-0.5h-0.2l-1-0.2l0,0L67,51.7h-0.2l-0.7-0.2h-0.2
+            l-0.8-0.2H65l-0.6-0.1h-0.2L63.7,51l-0.1,0.4v0.1l-0.1,0.3l0,0.2l-0.1,0.3l-0.1,0.2l-0.1,0.3l-0.1,0.2L63,53.5L63,53.7l-0.1,0.4
+            l-0.1,0.2l-0.1,0.5l-0.1,0.3l-0.1,0.6L62.3,56l-0.1,0.5l-0.1,0.3L62,57.2l-0.1,0.4L61.8,58l-0.1,0.4l-0.1,0.5l-0.1,0.4l-0.1,0.5
+            l-0.1,0.4l-0.1,0.6l-0.1,0.5L61,61.9l-0.1,0.4l-0.1,0.5l-0.1,0.5l-0.1,0.5l-0.1,0.5l-0.1,0.5l-0.1,0.5l-0.1,0.5l-0.1,0.5L60,66.9
+            l-0.1,0.5l-0.1,0.7l-0.1,0.5l-0.2,1l-0.1,0.5l-0.1,0.6l-0.1,0.5l-0.1,0.6l-0.1,0.6L59,73.1l-0.1,0.6l-0.1,0.6l-0.1,0.6l-0.1,0.7
+            l-0.1,0.6l-0.1,0.8l-0.1,0.5c-0.2,1.8-0.4,3.6-0.6,5.5V83c0,0.6-0.1,1.1-0.1,1.7l0,0c0,0.6-0.1,1.1-0.1,1.7v0.1
+            c0,0.6-0.1,1.1-0.1,1.7l0,0c-0.2,3-0.2,6.2-0.2,9.5c0.1,4.3,0.4,8.5,0.8,12.7c0,0.3,0.1,0.7,0.1,1.1c0.7,5.8,1.9,11.4,3.6,17
+            c1.5,4.5,3.2,8.9,5.2,13.2c0.9,1.7,1.8,3.4,2.8,5.1c9.2,15.3,21.5,23,36.6,23c1,0,2.1,0,3.2-0.1c7-0.6,13.9-2.5,20.2-5.6
+            c4.9-24.5-8.4-59.3-36.1-88.3C90,71.8,86,68,81.7,64.4c9.2,6.9,13.9,10.7,19.2,16.3c37.8,39.6,49.7,89.7,26.5,111.9
+            c-3.4,3.3-7.5,5.8-11.9,7.5c5.8-1.6,11.1-4.5,15.4-8.6c1.4-1.3,2.6-2.7,3.8-4.2c49.6-20.7,73-77.7,52.4-127.3
+            C183.1,50.4,177.7,41.6,171,33.8z"
+        />
+      </svg>
       <div
-        class="tw-spinner"
-        :class="[`tw-spinner-${spinnerPosition}`]"
+        class="text-gray-900 dark:text-slate-400"
+        :style="legendStyle"
       >
-        <svg
-          v-if="showSpinner"
-          :style="logoSize"
-          version="1.1"
-          xmlns="http://www.w3.org/2000/svg"
-          xmlns:xlink="http://www.w3.org/1999/xlink"
-          x="0px"
-          y="0px"
-          viewBox="0 0 194.6 200"
-          style="enable-background:new 0 0 194.6 200;"
-          xml:space="preserve"
-        >
-          <path
-            id="LeftTop"
-            d="M14.2,63.1C24.3,63.1,28,76.3,28,76.3s5,15.5,15.3,15.5c7.7,0,9.4-6.3,9.8-9.1c0-0.1,0-0.2,0-0.4s0-0.5,0.1-0.8
-              c0-0.1,0-0.1,0-0.2c0.3-2-0.8-4-2.7-4.8l0,0c-3.1-1.1-5.9-3-8-5.6c-6.4-7.4-3-17,4.5-23.6c-3.5-4-8-8.7-12-10.8
-              c-8.7-4.6-15.7,2.6-16.2,3.2L18.7,40c-0.6,0.8-1.2,1.6-1.8,2.5l-0.1,0.1c-0.6,0.9-1.2,1.8-1.8,2.7L15,45.4c-0.5,0.8-1,1.6-1.5,2.4
-              l-0.3,0.5c-1,1.8-2,3.6-3,5.5L10,54.3c-0.4,0.9-0.9,1.8-1.3,2.7l-0.1,0.1C8.2,58,7.8,59,7.4,59.9l-0.2,0.5c-0.3,0.8-0.6,1.5-0.9,2.3
-              l-0.2,0.6c-0.4,1-0.7,1.9-1,2.9L5,66.7c-0.1,0.3-0.2,0.5-0.2,0.8C7.1,64.7,10.5,63.1,14.2,63.1z"
-          />
-          <path
-            id="Head"
-            d="M36.2,33c5.3,1.8,11.4,6.8,15.7,11c0.5-0.3,1.1-0.6,1.6-0.9c2.3-1.2,4.7-2.1,7.2-2.7
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-              c0.3,0.5,0.5,1.1,0.7,1.6l0,0c0.5,1,1.3,1.9,2.3,2.4c3.6,1.2,7.6,2.5,11.7,4.2c5.8,2.3,11.5,5,17,8.1c0.5,0.2,1,0,1.2-0.5
-              c0.1-0.3,0.1-0.7-0.2-0.9c-27.2-26.1-8-36.3-8-36.3c-9.8,14.2,6.6,24.5,25.5,35.1c16.6,9.3,28.4,19.5,41.3,12.7
-              c6.4-3.4,1.9-11-1-15.2c-2.2-2.9-4-6-5.6-9.2c-1-2.1-1.3-4.4-0.8-6.6c0.7-3.1-0.4-6.8-2.8-10.5c-1.8-2.8-5.1-5.7-7.6-7.6
-              c-1.6-1.3-3.1-2.7-4.3-4.4c-9-12.6-32.2-17.9-32.2-17.9l0,0C97.5-2.6,74.3,0.1,54,10.2l0,0c-6.9,3.5-13.5,7.7-19.4,12.7l-0.8,0.6
-              c-1.4,1.2-2.8,2.5-4.2,3.8l0,0c-0.8,0.8-1.6,1.5-2.3,2.3l0,0c-1.5,1.6-3,3.2-4.4,4.9l-0.2,0.2l-0.4,0.5C25.2,32.8,29.6,30.9,36.2,33
-              z M145.8,33.9c3.9-1.7,8.5,0.1,10.2,4c0.6,1.3,0.8,2.7,0.6,4c-2.5,1.2-5.5,0.9-7.7-0.9C146.5,39.5,145.3,36.7,145.8,33.9L145.8,33.9
-              z"
-          />
-          <path
-            id="LeftMid"
-            d="M53.2,106.9c-0.2-2-0.4-4-0.4-6.3c-2.3,1-4.7,1.5-7.2,1.5c-19,0-19.5-18.8-26.2-29.2
-              c-7-10.8-16.8,0.9-17.8,7.2c0,0.3-0.1,0.5-0.1,0.7c-0.1,0.6-0.2,1.3-0.3,1.9C1,83.1,1,83.4,1,83.6c-0.1,0.8-0.2,1.6-0.3,2.3
-              c0,0.3-0.1,0.5-0.1,0.8c-0.1,1-0.2,2.1-0.3,3.1c0,0.1,0,0.2,0,0.3c-0.1,0.9-0.2,1.9-0.2,2.8c0,0.3,0,0.6,0,0.9C0,94.9,0,95.8,0,96.7
-              c0,0.1,0,0.2,0,0.3s0,0.1,0,0.1s0,0.1,0,0.1c0,0.4,0,0.8,0,1.2s0,0.8,0,1.2c0,0.6,0,1.2,0.1,1.7c0,0.2,0,0.5,0,0.7
-              c1.5,30.7,17.5,58.9,43,76c-8-7.8-12.7-17.8-12.7-28.6c0-13.4,7.3-26,19.1-34.4C52,113.2,53.5,110.1,53.2,106.9z"
-          />
-          <path
-            id="LeftBottom"
-            d="M128.3,170c-5.8,2.4-12,3.9-18.3,4.4c-1.1,0.1-2.2,0.1-3.3,0.1c-12.3,0-28.4-4.8-40.7-25.3
-              l-1.6-2.7c-1.9,2.7-2.9,6-2.9,9.3c0,13.9,16.6,26.5,36.7,26.5c5.4,0.1,10.7-0.6,15.9-2c-4.6,2.9-13.8,5.6-21.9,5.6
-              C69.2,186,50,170.8,50,152.7c0.1-6.3,2.1-12.5,5.8-17.6c1.5-2.1,1.9-4.8,1.1-7.2l0,0c-10.5,6.1-17,15.4-17,26.6
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-          />
-          <path
-            id="Tail"
-            class="st0"
-            d="M171,33.8c28,39.3,18.8,93.8-20.5,121.8c-2.4,1.7-4.9,3.3-7.5,4.8l-0.2,0.2c0-0.4,0-0.9,0.1-1.3
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-              c-1.1-0.3-2.1-0.6-3.1-0.9h-0.2l-2.9-0.8h-0.1l-1.3-0.3h-0.1l-2.6-0.6h-0.1l-2.3-0.5h-0.2l-1-0.2l0,0L67,51.7h-0.2l-0.7-0.2h-0.2
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-              c-3.4,3.3-7.5,5.8-11.9,7.5c5.8-1.6,11.1-4.5,15.4-8.6c1.4-1.3,2.6-2.7,3.8-4.2c49.6-20.7,73-77.7,52.4-127.3
-              C183.1,50.4,177.7,41.6,171,33.8z"
-          />
-        </svg>
-        <div
-          class="text-gray-900 dark:text-slate-400"
-          :style="legendStyle"
-        >
-          <span
-            v-if="showLegend"
-            v-html="legend"
-          />
-          <slot/>
-        </div>
+        <span
+          v-if="showLegend"
+          v-html="legend"
+        />
+        <slot />
       </div>
     </div>
-  </transition>
+  </div>
 </template>
 
 <script setup>
@@ -229,15 +236,7 @@ const checkResize = () => {
 }
 
 .box-spinner {
-  display: flex;
-  position: absolute;
-  box-shadow: 0px 1px 1px 0px rgba(0,0,0,.2);
-  background-image: none !important;
-  background-color: #fff;
-  align-items: center;
   z-index: 9999;
-  height: 100%;
-  opacity: 0.9;
 }
 
 .tw-spinner {
diff --git a/src/modules/otus/components/Citation/CitationRowShowMore.vue b/src/modules/otus/components/Citation/CitationRowShowMore.vue
index c52566b..c78efb7 100644
--- a/src/modules/otus/components/Citation/CitationRowShowMore.vue
+++ b/src/modules/otus/components/Citation/CitationRowShowMore.vue
@@ -7,6 +7,7 @@
       p-3
       px-4
       last:border-b-0
+      cursor-pointer
       dark:border-b-slate-700"
   >
     <div