diff --git a/src/components/ArticleSidebar.astro b/src/components/ArticleSidebar.astro
index eb2305a..8317afa 100644
--- a/src/components/ArticleSidebar.astro
+++ b/src/components/ArticleSidebar.astro
@@ -7,6 +7,11 @@ type TocItem = {
   id: string;
 };
 
+type TocSection = {
+  heading: TocItem;
+  children: TocItem[];
+};
+
 interface Props {
   post: BlogPost;
   toc: TocItem[];
@@ -15,6 +20,16 @@ interface Props {
 
 const { post, toc, relatedPosts } = Astro.props;
 const avatar = 'https://free.picui.cn/free/2025/08/10/689845496a283.png';
+const topDepth = toc.length > 0 ? Math.min(...toc.map((item) => item.depth)) : 1;
+const tocSections = toc.reduce<TocSection[]>((sections, item) => {
+  if (item.depth <= topDepth || sections.length === 0) {
+    sections.push({ heading: item, children: [] });
+  } else {
+    sections[sections.length - 1].children.push(item);
+  }
+
+  return sections;
+}, []);
 ---
 
 <aside class="article-sidebar" aria-label="文章侧边栏">
@@ -27,6 +42,21 @@ const avatar = 'https://free.picui.cn/free/2025/08/10/689845496a283.png';
     </div>
   </section>
 
+  {post.tags.length > 0 && (
+    <section class="sidebar-card article-tags-card">
+      <h2>
+        <span aria-hidden="true">#</span>
+        文章标签
+        <em>{post.tags.length}</em>
+      </h2>
+      <div class="article-tag-list" aria-label="文章标签">
+        {post.tags.map((tag) => (
+          <a href={`/tags/${encodeURIComponent(tag)}/`}>#{tag}</a>
+        ))}
+      </div>
+    </section>
+  )}
+
   {toc.length > 0 && (
     <section class="sidebar-card toc-card">
       <h2>
@@ -34,9 +64,23 @@ const avatar = 'https://free.picui.cn/free/2025/08/10/689845496a283.png';
         文章目录
         <em>{toc.length}</em>
       </h2>
-      <nav class="toc-list" aria-label="文章目录">
-        {toc.map((item) => (
-          <a class={`toc-depth-${item.depth}`} href={`#${item.id}`}>{item.text}</a>
+      <nav class="toc-list toc-tree" aria-label="文章目录" data-toc-tree>
+        {tocSections.map((section, index) => (
+          <div class:list={['toc-group', index === 0 && 'is-open']} data-toc-group data-heading-id={section.heading.id}>
+            <a class="toc-link toc-link-main" href={`#${section.heading.id}`} data-toc-link data-toc-top>
+              <span class="toc-marker" aria-hidden="true"></span>
+              <span>{section.heading.text}</span>
+            </a>
+            {section.children.length > 0 && (
+              <div class="toc-children" data-toc-children>
+                {section.children.map((item) => (
+                  <a class={`toc-link toc-link-child toc-depth-${item.depth}`} href={`#${item.id}`} data-toc-link>
+                    <span>{item.text}</span>
+                  </a>
+                ))}
+              </div>
+            )}
+          </div>
         ))}
       </nav>
     </section>
diff --git a/src/components/TwikooComments.astro b/src/components/TwikooComments.astro
new file mode 100644
index 0000000..4e013bf
--- /dev/null
+++ b/src/components/TwikooComments.astro
@@ -0,0 +1,72 @@
+---
+interface Props {
+  envId: string;
+  path: string;
+  title: string;
+  region?: string;
+}
+
+const { envId, path, title, region = '' } = Astro.props;
+---
+
+<section
+  id="post-comment"
+  class="twikoo-comments"
+  aria-label="Comments"
+  data-env-id={envId}
+  data-region={region}
+  data-path={path}
+>
+  <div class="twikoo-comments-head">
+    <span class="twikoo-comments-icon" aria-hidden="true">
+      <svg viewBox="0 0 24 24">
+        <path d="M21 12a8 8 0 0 1-8 8H7l-4 3v-5a8 8 0 1 1 18-6Z" />
+      </svg>
+    </span>
+    <div>
+      <h2>Comments</h2>
+      <p>{title}</p>
+    </div>
+  </div>
+  <div id="twikoo-wrap" class="twikoo-wrap"></div>
+</section>
+
+<script is:inline>
+  (() => {
+    const root = document.getElementById('post-comment');
+    const wrap = document.getElementById('twikoo-wrap');
+    if (!root || !wrap || root.dataset.twikooLoaded === 'true') return;
+
+    const envId = root.dataset.envId;
+    const path = root.dataset.path || window.location.pathname;
+    const region = root.dataset.region || undefined;
+    if (!envId) return;
+
+    root.dataset.twikooLoaded = 'true';
+
+    const initTwikoo = () => {
+      if (!window.twikoo || typeof window.twikoo.init !== 'function') return;
+
+      window.twikoo.init({
+        el: wrap,
+        envId,
+        region,
+        path,
+      });
+    };
+
+    if (window.twikoo) {
+      initTwikoo();
+      return;
+    }
+
+    const script = document.createElement('script');
+    script.src = 'https://cdn.jsdelivr.net/npm/twikoo@1.7.7/dist/twikoo.min.js';
+    script.defer = true;
+    script.onload = initTwikoo;
+    script.onerror = () => {
+      root.dataset.twikooLoaded = 'false';
+    };
+    document.head.appendChild(script);
+  })();
+</script>
diff --git a/src/layouts/BaseLayout.astro b/src/layouts/BaseLayout.astro
index 24d7e96..fabe069 100644
--- a/src/layouts/BaseLayout.astro
+++ b/src/layouts/BaseLayout.astro
@@ -19,6 +19,7 @@ const currentYear = new Date().getFullYear();
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <meta name="description" content={description} />
     <link rel="icon" href="/images/Bi.ico" />
+    <link rel="stylesheet" href="https://cdn.jsdmirror.com/npm/instantsearch.css/themes/reset-min.css" />
     <title>{pageTitle}</title>
   </head>
   <body>
@@ -31,6 +32,13 @@ const currentYear = new Date().getFullYear();
           <a href="/tags/">标签</a>
           <a href="/about/">关于</a>
           <a href="/link/">友链</a>
+          <button class="nav-search search-typesense-trigger" type="button" aria-label="搜索" title="搜索">
+            <svg aria-hidden="true" viewBox="0 0 24 24">
+              <path d="m21 21-4.3-4.3" />
+              <circle cx="11" cy="11" r="7" />
+            </svg>
+            <span>搜索</span>
+          </button>
         </div>
       </nav>
     </header>
@@ -92,6 +100,9 @@ const currentYear = new Date().getFullYear();
         </section>
       </div>
     </footer>
+    <script is:inline src="https://cdn.jsdmirror.com/npm/instantsearch.js@4.56.0"></script>
+    <script is:inline src="https://cdn.jsdmirror.com/npm/typesense-instantsearch-adapter@2.7.0/dist/typesense-instantsearch-adapter.min.js"></script>
+    <script is:inline src="/js/search/typesense-search.js"></script>
     <script is:inline>
       (() => {
         const runtime = document.getElementById('site-runtime');
diff --git a/src/lib/posts.ts b/src/lib/posts.ts
index de7168e..9b0b842 100644
--- a/src/lib/posts.ts
+++ b/src/lib/posts.ts
@@ -13,6 +13,7 @@ export type BlogPost = MarkdownModule & {
   tags: string[];
   categories: string[];
   summary: string;
+  comments: boolean;
   cover?: string;
   href: string;
 };
@@ -80,6 +81,7 @@ export function getAllPosts(): BlogPost[] {
         tags: asArray(module.frontmatter.tags),
         categories: asArray(module.frontmatter.categories),
         summary: makeSummary(module),
+        comments: module.frontmatter.comments !== false,
         cover: typeof module.frontmatter.cover === 'string' ? module.frontmatter.cover : undefined,
         href: `/posts/${slug}/`,
       };
diff --git a/src/pages/posts/[slug].astro b/src/pages/posts/[slug].astro
index 982f624..61a7ef8 100644
--- a/src/pages/posts/[slug].astro
+++ b/src/pages/posts/[slug].astro
@@ -1,6 +1,7 @@
 ---
 import ArticleSidebar from '@/components/ArticleSidebar.astro';
 import PostCopyrightCard from '@/components/PostCopyrightCard.astro';
+import TwikooComments from '@/components/TwikooComments.astro';
 import BaseLayout from '@/layouts/BaseLayout.astro';
 import { getAllPosts } from '@/lib/posts';
 
@@ -73,6 +74,7 @@ const relatedPosts = allPosts
   .filter((item) => item.slug !== post.slug)
   .filter((item) => item.categories.some((category) => post.categories.includes(category)))
   .slice(0, 8);
+const twikooEnvId = 'https://comment.biss.click';
 ---
 
 <BaseLayout title={post.title} description={post.summary}>
@@ -122,6 +124,7 @@ const relatedPosts = allPosts
         <Content />
       </div>
       <PostCopyrightCard post={post} />
+      {post.comments && <TwikooComments envId={twikooEnvId} path={post.href} title={post.title} />}
     </article>
     <ArticleSidebar post={post} toc={toc} relatedPosts={relatedPosts} />
   </section>
@@ -144,6 +147,51 @@ const relatedPosts = allPosts
       if (item?.id && !heading.id) heading.id = item.id;
     });
 
+    const tocTree = document.querySelector('[data-toc-tree]');
+    if (tocTree && toc.length > 0) {
+      const links = [...tocTree.querySelectorAll('[data-toc-link]')];
+      const groups = [...tocTree.querySelectorAll('[data-toc-group]')];
+      const headings = toc
+        .map((item) => document.getElementById(item.id))
+        .filter(Boolean);
+
+      const setActiveToc = (id) => {
+        links.forEach((link) => {
+          const isActive = link.getAttribute('href') === `#${id}`;
+          link.classList.toggle('is-active', isActive);
+          if (isActive) link.setAttribute('aria-current', 'location');
+          else link.removeAttribute('aria-current');
+        });
+
+        const activeLink = tocTree.querySelector(`[data-toc-link][href="#${CSS.escape(id)}"]`);
+        const activeGroup = activeLink?.closest('[data-toc-group]');
+        groups.forEach((group) => group.classList.toggle('is-open', group === activeGroup));
+      };
+
+      const updateToc = () => {
+        const anchorOffset = 132;
+        let activeId = headings[0]?.id;
+
+        headings.forEach((heading) => {
+          if (heading.getBoundingClientRect().top <= anchorOffset) activeId = heading.id;
+        });
+
+        if (activeId) setActiveToc(activeId);
+      };
+
+      tocTree.addEventListener('click', (event) => {
+        const link = event.target.closest?.('[data-toc-link]');
+        if (!link) return;
+
+        const group = link.closest('[data-toc-group]');
+        groups.forEach((item) => item.classList.toggle('is-open', item === group));
+      });
+
+      updateToc();
+      window.addEventListener('scroll', updateToc, { passive: true });
+      window.addEventListener('resize', updateToc);
+    }
+
     const summaryText = document.querySelector('.article-summary-text');
     if (!summaryText) return;
 
diff --git a/src/styles/site.css b/src/styles/site.css
index 0a12894..5d4472a 100644
--- a/src/styles/site.css
+++ b/src/styles/site.css
@@ -109,7 +109,8 @@ a {
   white-space: nowrap;
 }
 
-.nav-links a {
+.nav-links a,
+.nav-search {
   border: 1px solid transparent;
   border-radius: 999px;
   padding: 7px 12px;
@@ -121,13 +122,36 @@ a {
     transform 0.2s ease;
 }
 
+.nav-search {
+  display: inline-flex;
+  align-items: center;
+  gap: 6px;
+  color: inherit;
+  font: inherit;
+  line-height: inherit;
+  background: transparent;
+  cursor: pointer;
+}
+
+.nav-search svg {
+  width: 16px;
+  height: 16px;
+  fill: none;
+  stroke: currentColor;
+  stroke-width: 2;
+  stroke-linecap: round;
+  stroke-linejoin: round;
+}
+
 .nav-links a:hover,
+.nav-search:hover,
 .site-footer a:hover,
 .section-heading a:hover {
   color: var(--accent);
 }
 
-.nav-links a:hover {
+.nav-links a:hover,
+.nav-search:hover {
   border-color: rgba(255, 255, 255, 0.62);
   background: rgba(255, 255, 255, 0.38);
   box-shadow:
@@ -646,6 +670,7 @@ a {
 }
 
 .toc-list,
+.article-tag-list,
 .same-category-list {
   display: grid;
   gap: 6px;
@@ -669,6 +694,7 @@ a {
 }
 
 .toc-list a,
+.article-tag-list a,
 .same-category-list a {
   border-radius: 8px;
   padding: 9px 11px;
@@ -681,18 +707,108 @@ a {
 }
 
 .toc-list a:hover,
+.article-tag-list a:hover,
 .same-category-list a:hover {
   color: #1f618d;
   background: rgba(102, 200, 245, 0.16);
   transform: translateX(2px);
 }
 
+.toc-tree {
+  gap: 8px;
+}
+
+.toc-group {
+  position: relative;
+}
+
+.toc-link {
+  position: relative;
+  display: flex;
+  align-items: flex-start;
+  gap: 9px;
+  text-decoration: none;
+}
+
+.toc-link-main {
+  color: #3e5664 !important;
+  font-weight: 800;
+}
+
+.toc-marker {
+  flex: 0 0 auto;
+  width: 8px;
+  height: 8px;
+  margin-top: 0.52em;
+  border-radius: 999px;
+  background: rgba(102, 200, 245, 0.52);
+  box-shadow: 0 0 0 4px rgba(102, 200, 245, 0.12);
+}
+
+.toc-children {
+  position: relative;
+  display: grid;
+  gap: 4px;
+  max-height: 0;
+  margin-left: 14px;
+  overflow: hidden;
+  border-left: 1px solid rgba(102, 200, 245, 0.24);
+  padding-left: 10px;
+  opacity: 0;
+  transition:
+    max-height 0.28s ease,
+    opacity 0.22s ease,
+    margin-top 0.22s ease;
+}
+
+.toc-group.is-open .toc-children {
+  max-height: 520px;
+  margin-top: 4px;
+  opacity: 1;
+}
+
+.toc-link-child {
+  color: #657384 !important;
+  font-size: 0.9rem;
+  font-weight: 600;
+}
+
+.toc-link.is-active {
+  color: #0f766e !important;
+  background: rgba(102, 200, 245, 0.16);
+  transform: translateX(2px);
+}
+
+.toc-group.is-open .toc-link-main .toc-marker,
+.toc-link.is-active .toc-marker {
+  background: #3eb8be;
+  box-shadow: 0 0 0 4px rgba(62, 184, 190, 0.16);
+}
+
+.article-tag-list {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 8px;
+}
+
+.article-tag-list a {
+  display: inline-flex;
+  align-items: center;
+  min-height: 34px;
+  border: 1px solid rgba(15, 118, 110, 0.18);
+  padding: 6px 11px;
+  color: var(--accent);
+  font-size: 0.88rem;
+  font-weight: 700;
+  background: rgba(236, 253, 245, 0.66);
+}
+
 .toc-depth-2 {
   padding-left: 22px !important;
 }
 
 .toc-depth-3 {
-  padding-left: 34px !important;
+  padding-left: 24px !important;
   font-size: 0.9rem;
 }
 
@@ -1290,6 +1406,73 @@ time {
   transform: translateY(-1px);
 }
 
+.twikoo-comments {
+  margin-top: 34px;
+  border: 1px solid rgba(255, 255, 255, 0.64);
+  border-radius: 8px;
+  padding: clamp(20px, 4vw, 30px);
+  background:
+    radial-gradient(circle at 14% 0%, rgba(255, 255, 255, 0.8), transparent 32%),
+    linear-gradient(135deg, rgba(255, 253, 248, 0.8), rgba(236, 253, 245, 0.55)),
+    rgba(255, 253, 248, 0.76);
+  box-shadow:
+    inset 0 1px 0 rgba(255, 255, 255, 0.86),
+    0 16px 42px rgba(58, 51, 38, 0.12);
+  backdrop-filter: blur(18px) saturate(165%);
+  -webkit-backdrop-filter: blur(18px) saturate(165%);
+}
+
+.twikoo-comments-head {
+  display: flex;
+  align-items: center;
+  gap: 14px;
+  margin-bottom: 22px;
+}
+
+.twikoo-comments-icon {
+  display: grid;
+  flex: 0 0 auto;
+  place-items: center;
+  width: 44px;
+  height: 44px;
+  border-radius: 8px;
+  color: #fff;
+  background: #3eb8be;
+  box-shadow: 0 12px 28px rgba(15, 118, 110, 0.16);
+}
+
+.twikoo-comments-icon svg {
+  width: 22px;
+  height: 22px;
+  fill: none;
+  stroke: currentColor;
+  stroke-linecap: round;
+  stroke-linejoin: round;
+  stroke-width: 2.2;
+}
+
+.twikoo-comments h2 {
+  margin: 0;
+  color: #27313a;
+  font-size: 1.28rem;
+  line-height: 1.25;
+}
+
+.twikoo-comments p {
+  margin: 4px 0 0;
+  color: var(--muted);
+  font-size: 0.92rem;
+  line-height: 1.45;
+}
+
+.twikoo-wrap {
+  min-height: 160px;
+}
+
+.twikoo-comments :where(.tk-comments-container, .tk-submit) {
+  color: var(--text);
+}
+
 .archive-list {
   margin-top: 24px;
   display: grid;
@@ -1589,7 +1772,8 @@ time {
     padding-bottom: 2px;
   }
 
-  .nav-links a {
+  .nav-links a,
+  .nav-search {
     flex: 0 0 auto;
   }