diff --git a/app/components/layout/LetterCard.vue b/app/components/layout/LetterCard.vue
index 3cb9b50..00eac9d 100644
--- a/app/components/layout/LetterCard.vue
+++ b/app/components/layout/LetterCard.vue
@@ -2,7 +2,7 @@
 </script>
 
 <template>
-  <div class="flex size-full max-w-7xl flex-1 flex-col justify-between gap-3 rounded-sm border-2 border-main p-4 sm:p-6">
+  <div class="flex size-full max-w-7xl flex-1 flex-col justify-between gap-3 rounded-sm sm:border-2 border-main p-4 sm:p-6">
     <slot />
   </div>
 </template>
diff --git a/app/components/toc/Index.vue b/app/components/toc/Index.vue
index 00dcca9..942966e 100644
--- a/app/components/toc/Index.vue
+++ b/app/components/toc/Index.vue
@@ -1,21 +1,78 @@
 <script setup lang="ts">
 import type { TocLink } from '@nuxt/content'
 
-const { title = 'Table of Contents', links = [] } = defineProps<{
-  title?: string
+const { links = [] } = defineProps<{
   links: TocLink[]
 }>()
+
+const isOpen = ref(false)
+const isMobile = ref(false)
+const target = ref(null)
+
+const { activeHeadings, updateHeadings } = useScrollspy()
+const nuxtApp = useNuxtApp()
+
+const checkMobile = () => {
+  isMobile.value = window.innerWidth < 640
+}
+
+const handleInteraction = (event: 'enter' | 'leave' | 'click') => {
+  if (isMobile.value) {
+    if (event === 'click') {
+      isOpen.value = !isOpen.value
+    }
+  } else {
+    isOpen.value = event === 'enter'
+  }
+}
+
+onMounted(() => {
+  checkMobile()
+  window.addEventListener('resize', checkMobile)
+})
+
+onUnmounted(() => {
+  window.removeEventListener('resize', checkMobile)
+})
+
+nuxtApp.hooks.hookOnce('page:finish', () => {
+  updateHeadings([
+    ...document.querySelectorAll('h2'),
+    ...document.querySelectorAll('h3')
+  ])
+})
+
+
+onClickOutside(target, event => {
+  if (isOpen.value) isOpen.value = false
+})
 </script>
 
 <template>
-  <div class="max-sm:hidden fixed z-50 scale-[0.3] hover:scale-100 transition-transform duration-200 ease-in-out right-4 top-1/2 -translate-y-1/2 origin-right">
-    <div class="bg-primary p-4 shadow-md w-fit rounded-md mx-auto border border-secondary/20">
+  <div
+    class="fixed z-50 scale-[0.8] sm:scale-[0.6] transition-all duration-300 ease-in-out right-2 top-1/2 -translate-y-1/2 origin-right"
+    :class="[
+      !isMobile && 'hover:scale-100'
+    ]"
+  >
+    <div
+      ref="target"
+      class="rounded-md mx-auto transition-all duration-300 ease-in-out"
+      :class="[
+        isOpen ? 'bg-primary shadow-md border border-secondary/20 p-4' : 'p-0 border-transparent'
+      ]"
+      @mouseenter="handleInteraction('enter')"
+      @mouseleave="handleInteraction('leave')"
+      @click="isMobile && handleInteraction('click')"
+    >
       <nav class="overflow-y-auto">
         <div>
-          <button v-if="links?.length" tabindex="-1" class="group flex w-full items-center gap-1.5 lg:cursor-text lg:select-text">
-            <span class="truncate text-sm/6 font-newsreader italic font-light font-semibold">{{ title }}</span>
-          </button>
-          <TocLinks :links />
+          <TocLinks
+            :links
+            :is-hover="isOpen"
+            :active-headings
+            :is-mobile
+          />
         </div>
       </nav>
     </div>
diff --git a/app/components/toc/Links.vue b/app/components/toc/Links.vue
index d216d96..40c0305 100644
--- a/app/components/toc/Links.vue
+++ b/app/components/toc/Links.vue
@@ -1,50 +1,87 @@
 <script setup lang="ts">
 import type { TocLink } from '@nuxt/content'
-import { useScrollspy, useNuxtApp, useRouter } from '#imports'
 
-const { activeHeadings, updateHeadings } = useScrollspy()
-
-type ContentTocProps = {
-  title?: string
+const { links = [], isHover, isMobile } = defineProps<{
   links: TocLink[]
   active?: string
-}
-
-
-const { title = 'Table of Contents', links = [] } = defineProps<ContentTocProps>()
+  isHover: boolean
+  activeHeadings: string[]
+  isMobile: boolean
+}>()
 
-const nuxtApp = useNuxtApp()
 const router = useRouter()
 
-nuxtApp.hooks.hookOnce('page:finish', () => {
-  updateHeadings([
-    ...document.querySelectorAll('h2'),
-    ...document.querySelectorAll('h3')
-  ])
-})
-
-const emit = defineEmits(['move'])
-
 const scrollToHeading = (id: string): void => {
-  const encodedId = encodeURIComponent(id)
-  router.push(`#${encodedId}`)
-  emit('move', id)
+  if (!isMobile || (isMobile && isHover)) {
+    const encodedId = encodeURIComponent(id)
+    router.push(`#${encodedId}`)
+  }
 }
 </script>
 
 <template>
-  <ul v-if="links?.length">
-    <li v-for="link in links" :key="link.text" :class="link.depth === 3 ? 'ml-3' : ''">
-      <a
-        class="block truncate text-xs/6"
-        :class="activeHeadings.includes(link.id) ? 'text-accent' : 'text-tertiary hover:text-gray-700 dark:hover:text-gray-200'"
-        :href="`#${link.id}`"
-        @click.prevent="scrollToHeading(link.id)"
-      >
-        {{ link.text }}
-      </a>
+  <div>
+    <Transition
+      enter-active-class="transition-all duration-100 ease-in-out"
+      enter-from-class="opacity-0"
+      enter-to-class="opacity-100"
+      leave-active-class="transition-all duration-100 ease-in-out"
+      leave-from-class="opacity-100"
+      leave-to-class="opacity-0"
+      mode="out-in"
+    >
+      <ul v-if="links?.length && isHover" class="space-y-2">
+        <li
+          v-for="link in links"
+          :key="link.text"
+          :class="[
+            link.depth === 3 ? 'ml-4' : ''
+          ]"
+        >
+          <a
+            class="block truncate text-xs/6 transition-all duration-500 ease-in-out"
+            :class="activeHeadings.includes(link.id) ? 'text-accent' : 'text-tertiary hover:text-gray-700 dark:hover:text-gray-200'"
+            :href="`#${link.id}`"
+            @click.prevent="scrollToHeading(link.id)"
+          >
+            {{ link.text }}
+          </a>
+
+          <Links
+            v-if="link.children"
+            :links="link.children"
+            :is-hover
+            :active-headings
+            :is-mobile
+          />
+        </li>
+      </ul>
+      <div v-else-if="links?.length" class="space-y-4">
+        <div
+          v-for="link in links"
+          :key="link.text"
+          class="flex flex-col items-end gap-1"
+        >
+          <div
+            class="h-[4px] rounded-full transition-all duration-500 ease-in-out"
+            :class="[
+              activeHeadings.includes(link.id)
+                ? 'w-12 bg-accent'
+                : 'w-8 bg-secondary/20',
+              link.depth === 3 ? 'w-6' : '',
+              isMobile ? 'cursor-default' : 'cursor-pointer'
+            ]"
+          />
 
-      <Links v-if="link.children" :links="link.children" />
-    </li>
-  </ul>
+          <Links
+            v-if="link.children"
+            :links="link.children"
+            :is-hover
+            :active-headings
+            :is-mobile
+          />
+        </div>
+      </div>
+    </Transition>
+  </div>
 </template>
diff --git a/bun.lockb b/bun.lockb
index d976dcd..6041189 100755
Binary files a/bun.lockb and b/bun.lockb differ
diff --git a/nuxt.config.ts b/nuxt.config.ts
index 06d642e..da0093d 100644
--- a/nuxt.config.ts
+++ b/nuxt.config.ts
@@ -34,6 +34,7 @@ export default defineNuxtConfig({
     '@nuxt/image',
     '@nuxtjs/seo',
     '@nuxt/scripts',
+    '@vueuse/nuxt',
   ],
 
   runtimeConfig: {
diff --git a/package.json b/package.json
index 5189e5b..f74470e 100644
--- a/package.json
+++ b/package.json
@@ -15,14 +15,15 @@
   },
   "devDependencies": {
     "@hrcd/eslint-config": "edge",
-    "@nuxt/content": "^2.13.4",
-    "@nuxt/image": "^1.8.1",
+    "@nuxt/content": "2.13.4",
+    "@nuxt/image": "1.8.1",
     "@nuxt/scripts": "0.9.5",
     "@nuxthq/studio": "2.2.1",
     "@nuxtjs/seo": "2.0.2",
+    "@vueuse/nuxt": "12.0.0",
     "automd": "0.3.12",
     "eslint": "9.16.0",
-    "mockline": "^0.6.0",
+    "mockline": "0.6.0",
     "nuxt": "3.14.1592",
     "resend": "4.0.1",
     "vue": "3.5.13",