diff --git a/themes/Ying/layouts/_default/ly.html b/themes/Ying/layouts/_default/ly.html
index 71305eda..3894cecb 100644
--- a/themes/Ying/layouts/_default/ly.html
+++ b/themes/Ying/layouts/_default/ly.html
@@ -1,5 +1,7 @@
 {{ define "main" }}
 <div id="pjax-container" uk-scrollspy="target: > #szh,hr,h2,p; cls: uk-animation-slide-bottom-small; delay: 0">
+  <!-- 用于 Pjax 获取当前文章 ID -->
+  <div id="data-pid" style="display:none;">/{{ .Params.pid | default .Title }}.html</div>
   <div class="post-content" itemprop="articleBody" uk-scrollspy="target: > #szh; cls: uk-animation-slide-bottom-small; delay: 0">
     {{ .Content }}
     <div id="szh">
diff --git a/themes/Ying/layouts/_default/single.html b/themes/Ying/layouts/_default/single.html
index 76f591dc..62d5b51b 100644
--- a/themes/Ying/layouts/_default/single.html
+++ b/themes/Ying/layouts/_default/single.html
@@ -5,7 +5,7 @@
     <article style="margin-bottom: 3.5em;">
         <h1 class="post-title" itemprop="name headline" uk-scrollspy="cls: uk-animation-slide-top-small; delay: 200">{{ .Title }}</h1>
         <div class="meta" uk-scrollspy="cls: uk-animation-fade; delay: 300">
-            作者: 小赵同学 浏览: <span id="busuanzi_value_page_uv"></span> 字数: {{ .WordCount }} 分类:
+            作者: 小赵同学 浏览: <span id="busuanzi_value_page_uv"></span> 字数: {{ .WordCount }} 阅读时间: {{ .ReadingTime }} 分钟 分类:
             {{ range .Params.categories }}
             <a href="{{ . }}">{{ . }}</a>
             {{ end }}
diff --git a/themes/Ying/layouts/partials/footer.html b/themes/Ying/layouts/partials/footer.html
index 7b024214..882dc0f5 100644
--- a/themes/Ying/layouts/partials/footer.html
+++ b/themes/Ying/layouts/partials/footer.html
@@ -13,6 +13,9 @@
 </div>
 </div>
 </div>
+<a href="#" id="back-to-top" title="返回顶部">
+  <i class="ri-arrow-up-s-line"></i>
+</a>
 <script src="/js/iconfont.js"></script>
 <script src="/js/lightgallery.umd.min.js"></script>
 <script src="/js/uikit.min.js"></script>
diff --git a/themes/Ying/layouts/partials/head.html b/themes/Ying/layouts/partials/head.html
index 5e4e0f32..b1cf9415 100644
--- a/themes/Ying/layouts/partials/head.html
+++ b/themes/Ying/layouts/partials/head.html
@@ -133,7 +133,7 @@
   </style>
   <script src="/js/jquery.min.js"></script>
   <script src="/js/barrage.min.js"></script>
-  <script src="/js/jquery.scrollUp.min.js"></script>
+
   <script src="/js/instantpage.min.js" type="module" defer></script>
   <script src="/js/pjax.js"></script>
   {{ if or (eq .Type "about") (eq .Type "post") }}
diff --git a/themes/Ying/static/css/main.css b/themes/Ying/static/css/main.css
index 1542e74b..1a38c4a3 100644
--- a/themes/Ying/static/css/main.css
+++ b/themes/Ying/static/css/main.css
@@ -756,6 +756,8 @@ ul {
     color: #111827;
     text-decoration: none;
     box-shadow: 0 10px 20px rgba(0, 0, 0, 0.06);
+    z-index: 2147483647; /* Ensure it's on top */
+    cursor: pointer;
 }
 
 #scrollUp::before {
@@ -2795,6 +2797,53 @@ img[atk-emoticon] {
 /* GenericInserted */ [data-theme="dark"] .chroma .gi { color:#50fa7b;font-weight:bold }
 /* GenericOutput */ [data-theme="dark"] .chroma .go { color:#44475a }
 /* GenericPrompt */ [data-theme="dark"] .chroma .gp {  }
+
+/* Back to Top Button */
+#back-to-top {
+    position: fixed;
+    bottom: 30px;
+    right: 30px;
+    width: 40px;
+    height: 40px;
+    background-color: var(--bankuai-color);
+    color: var(--text-content-color);
+    border-radius: 50%;
+    text-align: center;
+    line-height: 40px;
+    font-size: 24px;
+    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
+    cursor: pointer;
+    z-index: 2147483647;
+    opacity: 0;
+    visibility: hidden;
+    transition: opacity 0.3s, visibility 0.3s, background-color 0.3s, transform 0.3s;
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    text-decoration: none;
+}
+
+#back-to-top.show {
+    opacity: 1;
+    visibility: visible;
+}
+
+#back-to-top:hover {
+    background-color: var(--erji-color);
+    color: #fff;
+    transform: translateY(-3px);
+}
+
+[data-theme="dark"] #back-to-top {
+    background-color: var(--bankuai-dark-color);
+    color: var(--text-content-dark-color);
+    box-shadow: 0 2px 5px rgba(255,255,255,0.1);
+}
+
+[data-theme="dark"] #back-to-top:hover {
+    background-color: #444;
+    color: #fff;
+}
 /* GenericStrong */ [data-theme="dark"] .chroma .gs {  }
 /* GenericSubheading */ [data-theme="dark"] .chroma .gu { font-weight:bold }
 /* GenericTraceback */ [data-theme="dark"] .chroma .gt {  }
diff --git a/themes/Ying/static/js/main.js b/themes/Ying/static/js/main.js
index 59f2a7a9..b01af05b 100644
--- a/themes/Ying/static/js/main.js
+++ b/themes/Ying/static/js/main.js
@@ -10,12 +10,43 @@ function isMobile() {
 // 文章图片灯箱
 window.ViewImage && ViewImage.init('.post-content img');
 
-// 激活返回顶部插件 
-$(function () {
-  $.scrollUp({
-    animation: 'fade',
-    scrollImg: true
-  });
+// Pure JavaScript Back to Top (High Performance)
+document.addEventListener('DOMContentLoaded', function() {
+    var backToTopButton = document.getElementById('back-to-top');
+    if (backToTopButton) {
+        var isVisible = false;
+        var ticking = false;
+
+        function update() {
+            if (window.scrollY > 300) {
+                if (!isVisible) {
+                    backToTopButton.classList.add('show');
+                    isVisible = true;
+                }
+            } else {
+                if (isVisible) {
+                    backToTopButton.classList.remove('show');
+                    isVisible = false;
+                }
+            }
+            ticking = false;
+        }
+
+        window.addEventListener('scroll', function() {
+            if (!ticking) {
+                window.requestAnimationFrame(update);
+                ticking = true;
+            }
+        }, { passive: true });
+
+        backToTopButton.addEventListener('click', function(e) {
+            e.preventDefault();
+            window.scrollTo({
+                top: 0,
+                behavior: 'smooth'
+            });
+        });
+    }
 });
 
 // loader定时器