添加返回顶部按钮

assets/css/style.css

@@ -770,4 +770,56 @@ body.dark-mode .beian-divider {
         padding: 15px 10px;
         font-size: 0.8rem;
     }
+}
+
+/* 返回顶部按钮 */
+.back-to-top {
+    position: fixed;
+    bottom: 30px;
+    right: 30px;
+    width: 45px;
+    height: 45px;
+    border-radius: 50%;
+    background: var(--accent-color, #3498db);
+    color: white;
+    border: none;
+    font-size: 1.5em;
+    cursor: pointer;
+    opacity: 0;
+    visibility: hidden;
+    transition: all 0.3s ease;
+    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
+    z-index: 1000;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.back-to-top.show {
+    opacity: 1;
+    visibility: visible;
+}
+
+.back-to-top:hover {
+    transform: translateY(-3px);
+    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
+    background: #2980b9;
+}
+
+body.dark-mode .back-to-top {
+    background: #63b3ed;
+}
+
+body.dark-mode .back-to-top:hover {
+    background: #4299e1;
+}
+
+@media (max-width: 768px) {
+    .back-to-top {
+        bottom: 20px;
+        right: 20px;
+        width: 40px;
+        height: 40px;
+        font-size: 1.3em;
+    }
 }

assets/css/style_simple.css

@@ -557,4 +557,51 @@ body.dark-mode .download-btn:hover {
 
 ::-webkit-scrollbar-thumb:hover {
     background: var(--text-secondary);
+}
+
+/* 返回顶部按钮 */
+.back-to-top {
+    position: fixed;
+    bottom: 30px;
+    right: 30px;
+    width: 45px;
+    height: 45px;
+    border-radius: 50%;
+    background: var(--accent-color);
+    color: white;
+    border: none;
+    font-size: 1.5em;
+    cursor: pointer;
+    opacity: 0;
+    visibility: hidden;
+    transition: all 0.3s ease;
+    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
+    z-index: 1000;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.back-to-top.show {
+    opacity: 1;
+    visibility: visible;
+}
+
+.back-to-top:hover {
+    transform: translateY(-3px);
+    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
+}
+
+body.dark-mode .back-to-top {
+    background: #63b3ed;
+}
+
+@media (max-width: 768px) {
+    .back-to-top {
+        bottom: 20px;
+        right: 20px;
+        width: 40px;
+        height: 40px;
+        font-size: 1.3em;
+    }
 }

assets/css/style_table.css

@@ -522,4 +522,51 @@ body.dark-mode .download-btn:hover {
 
 ::-webkit-scrollbar-thumb:hover {
     background: var(--text-secondary);
+}
+
+/* 返回顶部按钮 */
+.back-to-top {
+    position: fixed;
+    bottom: 30px;
+    right: 30px;
+    width: 45px;
+    height: 45px;
+    border-radius: 50%;
+    background: var(--accent-color);
+    color: white;
+    border: none;
+    font-size: 1.5em;
+    cursor: pointer;
+    opacity: 0;
+    visibility: hidden;
+    transition: all 0.3s ease;
+    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
+    z-index: 1000;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+}
+
+.back-to-top.show {
+    opacity: 1;
+    visibility: visible;
+}
+
+.back-to-top:hover {
+    transform: translateY(-3px);
+    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
+}
+
+body.dark-mode .back-to-top {
+    background: #63b3ed;
+}
+
+@media (max-width: 768px) {
+    .back-to-top {
+        bottom: 20px;
+        right: 20px;
+        width: 40px;
+        height: 40px;
+        font-size: 1.3em;
+    }
 }

full.php

@@ -387,5 +387,34 @@ try {
             });
         })();
     </script>
+
+    <!-- 返回顶部按钮 -->
+    <button id="back-to-top" class="back-to-top" title="返回顶部">
+        ↑
+    </button>
+
+    <script>
+        // 返回顶部功能
+        (function() {
+            const backToTopBtn = document.getElementById('back-to-top');
+            
+            // 滚动时显示/隐藏按钮
+            window.addEventListener('scroll', function() {
+                if (window.pageYOffset > 300) {
+                    backToTopBtn.classList.add('show');
+                } else {
+                    backToTopBtn.classList.remove('show');
+                }
+            });
+            
+            // 点击返回顶部
+            backToTopBtn.addEventListener('click', function() {
+                window.scrollTo({
+                    top: 0,
+                    behavior: 'smooth'
+                });
+            });
+        })();
+    </script>
 </body>
 </html>

index.php

@@ -339,5 +339,34 @@ try {
             });
         })();
     </script>
+
+    <!-- 返回顶部按钮 -->
+    <button id="back-to-top" class="back-to-top" title="返回顶部">
+        ↑
+    </button>
+
+    <script>
+        // 返回顶部功能
+        (function() {
+            const backToTopBtn = document.getElementById('back-to-top');
+            
+            // 滚动时显示/隐藏按钮
+            window.addEventListener('scroll', function() {
+                if (window.pageYOffset > 300) {
+                    backToTopBtn.classList.add('show');
+                } else {
+                    backToTopBtn.classList.remove('show');
+                }
+            });
+            
+            // 点击返回顶部
+            backToTopBtn.addEventListener('click', function() {
+                window.scrollTo({
+                    top: 0,
+                    behavior: 'smooth'
+                });
+            });
+        })();
+    </script>
 </body>
 </html>

table.php

@@ -356,5 +356,34 @@ try {
             });
         })();
     </script>
+
+    <!-- 返回顶部按钮 -->
+    <button id="back-to-top" class="back-to-top" title="返回顶部">
+        ↑
+    </button>
+
+    <script>
+        // 返回顶部功能
+        (function() {
+            const backToTopBtn = document.getElementById('back-to-top');
+            
+            // 滚动时显示/隐藏按钮
+            window.addEventListener('scroll', function() {
+                if (window.pageYOffset > 300) {
+                    backToTopBtn.classList.add('show');
+                } else {
+                    backToTopBtn.classList.remove('show');
+                }
+            });
+            
+            // 点击返回顶部
+            backToTopBtn.addEventListener('click', function() {
+                window.scrollTo({
+                    top: 0,
+                    behavior: 'smooth'
+                });
+            });
+        })();
+    </script>
 </body>
 </html>