diff --git a/frontend/site/src/components/SiteNav.astro b/frontend/site/src/components/SiteNav.astro
index 05d4b4f..f0c93d4 100644
--- a/frontend/site/src/components/SiteNav.astro
+++ b/frontend/site/src/components/SiteNav.astro
@@ -3,7 +3,6 @@ const links = [
   { href: '/', label: '首页' },
   { href: '/archive/', label: '归档' },
   { href: '/tags/', label: '标签' },
-  { href: '/site-map/', label: '站点地图' },
   { href: '/rss.xml', label: 'RSS' }
 ];
 ---
diff --git a/frontend/site/src/components/themes/yar/YarArchive.astro b/frontend/site/src/components/themes/yar/YarArchive.astro
index 8a3fd35..6a301ac 100644
--- a/frontend/site/src/components/themes/yar/YarArchive.astro
+++ b/frontend/site/src/components/themes/yar/YarArchive.astro
@@ -66,6 +66,7 @@ const { archiveYears } = Astro.props;
 
     <footer class="yar-footer">
       <p>由 osaet 构建</p>
+      <p><a href="/site-map/">站点地图</a></p>
       <p>© 2026 Osaet. All rights reserved.</p>
     </footer>
   </div>
@@ -299,6 +300,18 @@ const { archiveYears } = Astro.props;
     margin: 0;
   }
 
+  .yar-footer a {
+    color: inherit;
+    text-decoration: underline;
+    text-decoration-color: rgb(138 144 137 / 38%);
+    text-underline-offset: 0.22em;
+  }
+
+  .yar-footer a:hover {
+    color: #53605a;
+    text-decoration-color: rgb(83 96 90 / 70%);
+  }
+
   @media (max-width: 760px) {
     .yar-shell {
       padding-top: 24px;
diff --git a/frontend/site/src/components/themes/yar/YarHome.astro b/frontend/site/src/components/themes/yar/YarHome.astro
index dc76a9c..7eaac18 100644
--- a/frontend/site/src/components/themes/yar/YarHome.astro
+++ b/frontend/site/src/components/themes/yar/YarHome.astro
@@ -106,6 +106,7 @@ function formatPublishedAt(date: string): string {
 
     <footer class="yar-footer">
       <p>由 osaet 构建</p>
+      <p><a href="/site-map/">站点地图</a></p>
       <p>© 2026 Osaet. All rights reserved.</p>
     </footer>
   </div>
@@ -451,6 +452,18 @@ function formatPublishedAt(date: string): string {
     margin: 0;
   }
 
+  .yar-footer a {
+    color: inherit;
+    text-decoration: underline;
+    text-decoration-color: rgb(138 144 137 / 38%);
+    text-underline-offset: 0.22em;
+  }
+
+  .yar-footer a:hover {
+    color: #53605a;
+    text-decoration-color: rgb(83 96 90 / 70%);
+  }
+
   @media (max-width: 760px) {
     .yar-shell {
       padding-top: 24px;
diff --git a/frontend/site/src/components/themes/yar/YarPost.astro b/frontend/site/src/components/themes/yar/YarPost.astro
index d3ca4a7..6956230 100644
--- a/frontend/site/src/components/themes/yar/YarPost.astro
+++ b/frontend/site/src/components/themes/yar/YarPost.astro
@@ -56,6 +56,7 @@ function formatPublishedAt(value: string): string {
 
     <footer class="yar-footer">
       <p>由 osaet 构建</p>
+      <p><a href="/site-map/">站点地图</a></p>
       <p>© 2026 Osaet. All rights reserved.</p>
     </footer>
   </div>
@@ -300,6 +301,18 @@ function formatPublishedAt(value: string): string {
     margin: 0;
   }
 
+  .yar-footer a {
+    color: inherit;
+    text-decoration: underline;
+    text-decoration-color: rgb(138 144 137 / 38%);
+    text-underline-offset: 0.22em;
+  }
+
+  .yar-footer a:hover {
+    color: #53605a;
+    text-decoration-color: rgb(83 96 90 / 70%);
+  }
+
   @media (max-width: 760px) {
     .yar-shell {
       padding-top: 24px;
diff --git a/frontend/site/src/components/themes/yar/YarTagPosts.astro b/frontend/site/src/components/themes/yar/YarTagPosts.astro
index 1f3fdd4..10946a1 100644
--- a/frontend/site/src/components/themes/yar/YarTagPosts.astro
+++ b/frontend/site/src/components/themes/yar/YarTagPosts.astro
@@ -46,6 +46,7 @@ const { tag, posts } = Astro.props;
 
     <footer class="yar-footer">
       <p>由 osaet 构建</p>
+      <p><a href="/site-map/">站点地图</a></p>
       <p>© 2026 Osaet. All rights reserved.</p>
     </footer>
   </div>
@@ -212,6 +213,18 @@ const { tag, posts } = Astro.props;
     margin: 0;
   }
 
+  .yar-footer a {
+    color: inherit;
+    text-decoration: underline;
+    text-decoration-color: rgb(138 144 137 / 38%);
+    text-underline-offset: 0.22em;
+  }
+
+  .yar-footer a:hover {
+    color: #53605a;
+    text-decoration-color: rgb(83 96 90 / 70%);
+  }
+
   @media (max-width: 760px) {
     .yar-shell {
       padding-top: 24px;
diff --git a/frontend/site/src/components/themes/yar/YarTags.astro b/frontend/site/src/components/themes/yar/YarTags.astro
index b0b6b78..811f1dc 100644
--- a/frontend/site/src/components/themes/yar/YarTags.astro
+++ b/frontend/site/src/components/themes/yar/YarTags.astro
@@ -40,6 +40,7 @@ const { tags } = Astro.props;
 
     <footer class="yar-footer">
       <p>由 osaet 构建</p>
+      <p><a href="/site-map/">站点地图</a></p>
       <p>© 2026 Osaet. All rights reserved.</p>
     </footer>
   </div>
@@ -190,6 +191,18 @@ const { tags } = Astro.props;
     margin: 0;
   }
 
+  .yar-footer a {
+    color: inherit;
+    text-decoration: underline;
+    text-decoration-color: rgb(138 144 137 / 38%);
+    text-underline-offset: 0.22em;
+  }
+
+  .yar-footer a:hover {
+    color: #53605a;
+    text-decoration-color: rgb(83 96 90 / 70%);
+  }
+
   @media (max-width: 760px) {
     .yar-shell {
       padding-top: 24px;