diff --git a/.gitignore b/.gitignore
index 123be91..309047e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,4 +6,5 @@ dist/
 .env.*
 !.env.example
 pnpm-debug.log*
-.obsidian/
\ No newline at end of file
+.obsidian/
+.pnpm-store/
\ No newline at end of file
diff --git a/src/components/EngagementTabs.astro b/src/components/EngagementTabs.astro
new file mode 100644
index 0000000..dd20aab
--- /dev/null
+++ b/src/components/EngagementTabs.astro
@@ -0,0 +1,231 @@
+---
+import TwikooComments from '@/components/TwikooComments.astro';
+import Webmentions from '@/components/Webmentions.astro';
+import { siteConfig } from '@/site.config';
+
+interface Props {
+  commentsEnabled: boolean;
+  path: string;
+  target: string;
+}
+
+const { commentsEnabled, path, target } = Astro.props;
+const webmentionsEnabled = siteConfig.webmentions.enabled && Boolean(siteConfig.webmentions.endpoint.trim());
+const commentsConfigured = siteConfig.comments.provider === 'twikoo';
+const showComments = commentsEnabled && commentsConfigured;
+---
+
+{(webmentionsEnabled || showComments) && <section
+  class="engagement-shell"
+  aria-label="文章互动"
+  data-engagement-tabs
+  data-pagefind-ignore="all"
+>
+  <div class="engagement-tablist" role="tablist" aria-label="文章互动方式">
+    {webmentionsEnabled && <button
+      class="engagement-tab"
+      id="engagement-tab-webmentions"
+      type="button"
+      role="tab"
+      aria-controls="engagement-panel-webmentions"
+      aria-selected="true"
+      data-engagement-tab="webmentions"
+    >WebMention</button>}
+    {showComments && <button
+      class="engagement-tab"
+      id="engagement-tab-comments"
+      type="button"
+      role="tab"
+      aria-controls="engagement-panel-comments"
+      aria-selected={webmentionsEnabled ? 'false' : 'true'}
+      tabindex={webmentionsEnabled ? -1 : 0}
+      data-engagement-tab="comments"
+    >评论</button>}
+  </div>
+
+  {webmentionsEnabled && <div
+    class="engagement-panel"
+    id="engagement-panel-webmentions"
+    role="tabpanel"
+    aria-labelledby="engagement-tab-webmentions"
+    data-engagement-panel="webmentions"
+  >
+    <Webmentions target={target} />
+  </div>}
+
+  {showComments && <div
+    class="engagement-panel"
+    id="engagement-panel-comments"
+    role="tabpanel"
+    aria-labelledby="engagement-tab-comments"
+    data-engagement-panel="comments"
+    hidden={webmentionsEnabled}
+  >
+    <TwikooComments enabled={commentsEnabled} path={path} />
+  </div>}
+</section>}
+
+<style>
+  .engagement-shell {
+    width: min(100%, var(--article-content-width));
+    margin: 4.375rem auto 0;
+    border-top: 1px solid var(--color-border);
+    color: var(--color-text);
+    font-family: var(--reading-font-family);
+    font-size: .94rem;
+  }
+
+  .engagement-tablist {
+    display: flex;
+    align-items: center;
+    gap: 1.5rem;
+    min-height: 3.25rem;
+    border-bottom: 1px solid var(--color-border);
+  }
+
+  .engagement-tab {
+    position: relative;
+    align-self: stretch;
+    padding: 0 .125rem;
+    border: 0;
+    background: transparent;
+    color: var(--color-muted);
+    cursor: pointer;
+    font-family: inherit;
+    font-size: .9375rem;
+    font-weight: 500;
+  }
+
+  .engagement-tab::after {
+    position: absolute;
+    right: 0;
+    bottom: -1px;
+    left: 0;
+    height: 2px;
+    background: var(--color-accent);
+    content: '';
+    opacity: 0;
+    transform: scaleX(.5);
+    transition: opacity 160ms ease, transform 160ms ease;
+  }
+
+  .engagement-tab:is(:hover, [aria-selected='true']) {
+    color: var(--color-accent-strong);
+  }
+
+  .engagement-tab[aria-selected='true']::after {
+    opacity: 1;
+    transform: scaleX(1);
+  }
+
+  .engagement-tab:focus-visible {
+    border-radius: var(--radius-sm);
+    outline: 1px solid var(--color-accent);
+    outline-offset: 3px;
+  }
+
+  .engagement-panel {
+    padding-top: 1.5rem;
+  }
+
+  .engagement-panel[hidden] {
+    display: none;
+  }
+
+  @media (max-width: 37.5rem) {
+    .engagement-shell {
+      width: 100%;
+      margin-top: 3.25rem;
+      font-size: .9rem;
+    }
+
+    .engagement-tablist {
+      min-height: 3rem;
+    }
+
+    .engagement-panel {
+      padding-top: 1.25rem;
+    }
+  }
+</style>
+
+<script>
+  type EngagementTabName = 'webmentions' | 'comments';
+
+  declare global {
+    interface Window {
+      __eidolonEngagementTabsBound?: boolean;
+    }
+  }
+
+  const tabNameFromHash = (): EngagementTabName | null => {
+    if (window.location.hash === '#comments') return 'comments';
+    if (window.location.hash === '#webmentions') return 'webmentions';
+    return null;
+  };
+
+  const activateEngagementTab = (
+    root: HTMLElement,
+    name: EngagementTabName,
+    focus = false
+  ) => {
+    const tabs = Array.from(root.querySelectorAll<HTMLButtonElement>('[data-engagement-tab]'));
+    const panels = Array.from(root.querySelectorAll<HTMLElement>('[data-engagement-panel]'));
+    const activeTab = tabs.find((tab) => tab.dataset.engagementTab === name);
+    if (!activeTab) return;
+
+    for (const tab of tabs) {
+      const active = tab === activeTab;
+      tab.setAttribute('aria-selected', String(active));
+      tab.tabIndex = active ? 0 : -1;
+    }
+    for (const panel of panels) {
+      panel.hidden = panel.dataset.engagementPanel !== name;
+    }
+
+    if (focus) activeTab.focus();
+    root.dispatchEvent(new CustomEvent('engagement:tab-change', {
+      bubbles: true,
+      detail: { tab: name }
+    }));
+  };
+
+  const bindEngagementTabs = () => {
+    const root = document.querySelector<HTMLElement>('[data-engagement-tabs]');
+    if (!root || root.dataset.engagementTabsBound) return;
+    root.dataset.engagementTabsBound = 'true';
+
+    const tabs = Array.from(root.querySelectorAll<HTMLButtonElement>('[data-engagement-tab]'));
+    const initialTab = tabNameFromHash() ?? (tabs[0]?.dataset.engagementTab as EngagementTabName | undefined);
+    if (initialTab) activateEngagementTab(root, initialTab);
+
+    for (const tab of tabs) {
+      tab.addEventListener('click', () => {
+        activateEngagementTab(root, tab.dataset.engagementTab as EngagementTabName);
+      });
+      tab.addEventListener('keydown', (event) => {
+        if (!['ArrowLeft', 'ArrowRight', 'Home', 'End'].includes(event.key)) return;
+        event.preventDefault();
+        const currentIndex = tabs.indexOf(tab);
+        const nextIndex = event.key === 'Home'
+          ? 0
+          : event.key === 'End'
+            ? tabs.length - 1
+            : (currentIndex + (event.key === 'ArrowRight' ? 1 : -1) + tabs.length) % tabs.length;
+        const nextName = tabs[nextIndex]?.dataset.engagementTab as EngagementTabName | undefined;
+        if (nextName) activateEngagementTab(root, nextName, true);
+      });
+    }
+  };
+
+  if (!window.__eidolonEngagementTabsBound) {
+    window.__eidolonEngagementTabsBound = true;
+    document.addEventListener('astro:page-load', bindEngagementTabs);
+    window.addEventListener('hashchange', () => {
+      const root = document.querySelector<HTMLElement>('[data-engagement-tabs]');
+      const tab = tabNameFromHash();
+      if (root && tab) activateEngagementTab(root, tab);
+    });
+  }
+  bindEngagementTabs();
+</script>
diff --git a/src/components/TwikooClient.astro b/src/components/TwikooClient.astro
index 2159a87..7d14cea 100644
--- a/src/components/TwikooClient.astro
+++ b/src/components/TwikooClient.astro
@@ -39,6 +39,8 @@
     const initCurrentComments = () => {
       const root = document.querySelector('#twikoo-comments');
       if (!(root instanceof HTMLElement) || root.dataset.twikooBound) return;
+      const panel = root.closest('[data-engagement-panel]');
+      if (panel instanceof HTMLElement && panel.hidden) return;
       let config;
       try {
         config = JSON.parse(root.dataset.twikooConfig ?? '{}');
@@ -62,6 +64,7 @@
 
     initCurrentComments();
     document.addEventListener('astro:page-load', initCurrentComments);
+    document.addEventListener('engagement:tab-change', initCurrentComments);
     document.addEventListener('astro:before-swap', () => {
       document.querySelector('#twikoo-comments')?.replaceChildren();
     });
diff --git a/src/components/TwikooComments.astro b/src/components/TwikooComments.astro
index 8a58b9f..1e8e98f 100644
--- a/src/components/TwikooComments.astro
+++ b/src/components/TwikooComments.astro
@@ -12,12 +12,12 @@ const config = comments.provider === 'twikoo' && comments.envId.trim() ? {
 } : null;
 ---
 {enabled && config && <section class="comments-shell" id="comments" aria-labelledby="comments-title">
-  <h2 id="comments-title">评论</h2>
+  <h2 class="sr-only" id="comments-title">评论</h2>
   <div id="twikoo-comments" data-twikoo-config={JSON.stringify(config)} data-twikoo-state="idle"></div>
 </section>}
 
 {enabled && !config && <section class="comments-shell comments-preview" id="comments" aria-labelledby="comments-title" data-pagefind-ignore="all">
-  <h2 id="comments-title">评论</h2>
+  <h2 class="sr-only" id="comments-title">评论</h2>
   <div class="twikoo-preview" aria-label="Twikoo 评论预览">
     <p class="twikoo-preview-status">Twikoo 尚未配置</p>
     <div class="twikoo-preview-fields" aria-hidden="true">
@@ -30,9 +30,8 @@ const config = comments.provider === 'twikoo' && comments.envId.trim() ? {
 </section>}
 
 <style is:global>
-  #comments { width: min(100%, var(--article-content-width)); margin: 4.375rem auto 0; }
-  #comments > h2 { margin: 0 0 1.5rem; padding-top: 1.375rem; border-top: 1px solid var(--color-border); color: var(--color-accent-strong); font-family: var(--reading-font-family); font-size: 1.5625rem; font-weight: 500; }
-  #twikoo-comments, #comments > #twikoo { color: var(--color-text); font-size: .94rem; }
+  #comments { width: 100%; margin: 0; font-family: var(--reading-font-family); }
+  #twikoo-comments, #comments > #twikoo { color: var(--color-text); font-family: var(--reading-font-family); font-size: .94rem; }
   #twikoo-comments .tk-comments-title, #comments > #twikoo .tk-comments-title { margin: 0 0 18px; color: var(--color-text); font-family: var(--font-serif); font-size: 1.1rem; font-weight: 600; }
   #twikoo-comments .tk-comment, #comments > #twikoo .tk-comment { padding: 1.375rem 0; border-bottom: 1px solid var(--color-border); }
   #twikoo-comments .tk-content, #twikoo-comments .tk-comment-content, #comments > #twikoo .tk-content, #comments > #twikoo .tk-comment-content { margin-top: .5rem; color: var(--color-text); line-height: 1.75; overflow-wrap: anywhere; }
@@ -94,7 +93,7 @@ const config = comments.provider === 'twikoo' && comments.envId.trim() ? {
   #comments > #twikoo .tk-submit-action-icon { color: var(--color-muted) !important; }
   #comments > #twikoo .OwO-logo { color: var(--color-muted) !important; }
   #comments > #twikoo .OwO-body { border: 1px solid var(--color-border) !important; border-radius: var(--radius-sm) !important; background: var(--color-surface) !important; color: var(--color-text) !important; box-shadow: var(--shadow-soft) !important; }
-  #comments > #twikoo .tk-send { min-width: 7rem !important; height: 2.25rem !important; border: 0 !important; border-radius: var(--radius-sm) !important; background: var(--color-accent) !important; color: var(--color-accent-contrast) !important; font-weight: 500 !important; }
+  #comments > #twikoo .tk-send { min-width: 7rem !important; height: 2.25rem !important; border: 0 !important; border-radius: var(--radius-sm) !important; background: var(--color-accent) !important; color: var(--color-accent-contrast) !important; font-family: var(--reading-font-family) !important; font-size: .875rem !important; font-weight: 500 !important; }
   #comments > #twikoo .tk-send.is-disabled { opacity: .55 !important; }
   #comments > #twikoo .tk-preview { border: 1px solid var(--color-border) !important; border-radius: var(--radius-sm) !important; background: transparent !important; color: var(--color-muted) !important; }
   #comments > #twikoo .tk-comments-container { margin-top: 3rem !important; }
@@ -169,5 +168,5 @@ const config = comments.provider === 'twikoo' && comments.envId.trim() ? {
     #comments > #twikoo .tk-replies .tk-comment > .tk-avatar { flex-basis: 1.75rem !important; width: 1.75rem !important; height: 1.75rem !important; margin-right: .5rem !important; }
     #comments > #twikoo .OwO .OwO-body { right: 0 !important; left: auto !important; width: min(18rem, 100vw - 2rem) !important; }
   }
-  @media (max-width: 37.5rem) { #comments { margin-top: 3.25rem; } #twikoo-comments .tk-avatar, #twikoo-comments .tk-comment-avatar { width: 1.875rem; height: 1.875rem; } }
+  @media (max-width: 37.5rem) { #twikoo-comments .tk-avatar, #twikoo-comments .tk-comment-avatar { width: 1.875rem; height: 1.875rem; } }
 </style>
diff --git a/src/components/Webmentions.astro b/src/components/Webmentions.astro
index 2ab301c..1150b61 100644
--- a/src/components/Webmentions.astro
+++ b/src/components/Webmentions.astro
@@ -1,5 +1,4 @@
 ---
-import { Send } from '@lucide/astro';
 import { getWebmentionEndpoint } from '@/lib/webmentions';
 import { siteConfig } from '@/site.config';
 
@@ -25,7 +24,7 @@ const getEndpoint = endpoint ? getWebmentionEndpoint(endpoint, 'get') : '';
   data-site-origin={new URL(siteConfig.site.url).origin}
   data-pagefind-ignore="all"
 >
-  <h2 id="webmentions-title">WebMention</h2>
+  <h2 class="sr-only" id="webmentions-title">WebMention</h2>
 
   <div class="webmentions-loading" data-webmentions-loading role="status" aria-label="正在读取 WebMention">
     <svg class="webmentions-loading-spinner" viewBox="25 25 50 50" aria-hidden="true">
@@ -56,10 +55,7 @@ const getEndpoint = endpoint ? getWebmentionEndpoint(endpoint, 'get') : '';
     <div class="webmention-form-row">
       <input id="webmention-source" name="source" type="url" inputmode="url" autocomplete="url" placeholder="https://example.com/your-post" required />
       <input name="target" type="hidden" value={target} />
-      <button type="submit">
-        <Send size={16} stroke-width={1.8} aria-hidden="true" />
-        <span>发送</span>
-      </button>
+      <button type="submit">发送</button>
     </div>
     <p class="webmention-form-status" data-webmention-form-status role="status" aria-live="polite"></p>
   </form>}
@@ -67,18 +63,8 @@ const getEndpoint = endpoint ? getWebmentionEndpoint(endpoint, 'get') : '';
 
 <style>
   .webmentions-shell {
-    width: min(100%, var(--article-content-width));
-    margin: 4.375rem auto 0;
-  }
-
-  .webmentions-shell > h2 {
-    margin: 0 0 1.5rem;
-    padding-top: 1.375rem;
-    border-top: 1px solid var(--color-border);
-    color: var(--color-accent-strong);
     font-family: var(--reading-font-family);
-    font-size: 1.5625rem;
-    font-weight: 500;
+    font-size: .94rem;
   }
 
   .webmentions-status,
@@ -163,7 +149,7 @@ const getEndpoint = endpoint ? getWebmentionEndpoint(endpoint, 'get') : '';
   :global(.webmention-reaction) {
     display: grid;
     width: 2.25rem;
-    height: 2.25rem;
+    height: 2.125rem;
     place-items: center;
     overflow: hidden;
     border: 1px solid var(--color-border);
@@ -254,7 +240,7 @@ const getEndpoint = endpoint ? getWebmentionEndpoint(endpoint, 'get') : '';
 
   :global(.webmention-author) {
     color: var(--color-text);
-    font-size: .875rem;
+    font-size: .8125rem;
     font-weight: 500;
     overflow-wrap: anywhere;
   }
@@ -308,12 +294,15 @@ const getEndpoint = endpoint ? getWebmentionEndpoint(endpoint, 'get') : '';
   .webmention-form input[type='url'] {
     min-width: 0;
     flex: 1 1 auto;
-    height: 2.5rem;
-    padding: .5rem .75rem;
+    height: 2.125rem;
+    padding: .438rem .525rem;
     border: 1px solid var(--color-border);
     border-radius: var(--radius-sm);
     background: var(--color-surface);
     color: var(--color-text);
+    font-family: inherit;
+    font-size: .8125rem;
+    box-shadow: none;
   }
 
   .webmention-form input[type='url']:focus {
@@ -326,15 +315,17 @@ const getEndpoint = endpoint ? getWebmentionEndpoint(endpoint, 'get') : '';
     flex: 0 0 auto;
     align-items: center;
     justify-content: center;
-    gap: .4rem;
-    min-height: 2.5rem;
-    padding: .45rem .85rem;
-    border: 1px solid var(--color-accent-strong);
+    min-width: 7rem;
+    height: 2.25rem;
+    padding: 0 .875rem;
+    border: 0;
     border-radius: var(--radius-sm);
     background: var(--color-accent);
     color: var(--color-accent-contrast);
     cursor: pointer;
-    font-weight: 600;
+    font-family: inherit;
+    font-size: .875rem;
+    font-weight: 500;
   }
 
   .webmention-form button:disabled {
@@ -349,8 +340,7 @@ const getEndpoint = endpoint ? getWebmentionEndpoint(endpoint, 'get') : '';
 
   @media (max-width: 37.5rem) {
     .webmentions-shell {
-      width: 100%;
-      margin-top: 3.25rem;
+      font-size: .9rem;
     }
 
     .webmention-form-row {
@@ -360,6 +350,7 @@ const getEndpoint = endpoint ? getWebmentionEndpoint(endpoint, 'get') : '';
 
     .webmention-form button {
       align-self: flex-end;
+      min-width: 5.5rem;
     }
   }
 </style>
diff --git a/src/pages/posts/[...slug].astro b/src/pages/posts/[...slug].astro
index 07cb800..d73a567 100644
--- a/src/pages/posts/[...slug].astro
+++ b/src/pages/posts/[...slug].astro
@@ -4,11 +4,10 @@ import BaseLayout from '@/layouts/BaseLayout.astro';
 import Masthead from '@/components/Masthead.astro';
 import { getContentCacheKey, getExcerpt, getPostCardImage, getPostPath, getPostTaxonomy, getPublicPosts, slugify } from '@/lib/content';
 import { siteConfig } from '@/site.config';
-import TwikooComments from '@/components/TwikooComments.astro';
+import EngagementTabs from '@/components/EngagementTabs.astro';
 import TableOfContents from '@/components/TableOfContents.astro';
 import Mermaid from '@/components/Mermaid.astro';
 import ImageLightbox from '@/components/ImageLightbox.astro';
-import Webmentions from '@/components/Webmentions.astro';
 export async function getStaticPaths() {
   const posts = await getPublicPosts();
   return posts.map((post, index) => ({
@@ -49,8 +48,11 @@ const dateText = `${date.year} 年 ${date.month} 月 ${date.day} 日`;
       {older ? <a class="grid min-h-24 content-center p-4 no-underline sm:border-r sm:border-line" href={getPostPath(older)}><span class="text-xs text-subtle">上一篇</span><strong class="mt-1 font-sans text-base font-normal">{older.data.title}</strong></a> : <span class="grid min-h-24 content-center p-4 sm:border-r sm:border-line"><span class="text-xs text-subtle">上一篇</span><strong class="mt-1 font-sans text-base font-normal">没有更多了</strong></span>}
       {newer ? <a class="grid min-h-24 content-center border-t border-line p-4 no-underline sm:border-t-0 sm:text-right" href={getPostPath(newer)}><span class="text-xs text-subtle">下一篇</span><strong class="mt-1 font-sans text-base font-normal">{newer.data.title}</strong></a> : <span class="grid min-h-24 content-center border-t border-line p-4 sm:border-t-0 sm:text-right"><span class="text-xs text-subtle">下一篇</span><strong class="mt-1 font-sans text-base font-normal">没有更多了</strong></span>}
     </nav>
-    <Webmentions target={new URL(Astro.url.pathname, siteConfig.site.url).href} />
-    <TwikooComments enabled={post.data.comments} path={Astro.url.pathname} />
+    <EngagementTabs
+      commentsEnabled={post.data.comments}
+      path={Astro.url.pathname}
+      target={new URL(Astro.url.pathname, siteConfig.site.url).href}
+    />
   </article>
   <Mermaid enabled={post.data.mermaid} />
 </BaseLayout>