feat: 样式修改

pages/wiki/index.wxss

@@ -3,7 +3,7 @@
   height: 100vh;
   display: flex;
   flex-direction: column;
-  background-color: #F9FAFB;
+  background-color: #F4F6F0;
   position: relative;
   overflow: hidden;
 }
@@ -101,6 +101,30 @@
     font-size: 28rpx;
 }
 
+/* Floating Action Button */
+.floating-add-btn {
+    position: fixed;
+    right: 40rpx;
+    bottom: 60rpx;
+    background: #558B2F;
+    color: white;
+    padding: 24rpx 40rpx;
+    border-radius: 60rpx;
+    display: flex;
+    align-items: center;
+    gap: 12rpx;
+    box-shadow: 0 12rpx 32rpx rgba(85, 139, 47, 0.4);
+    z-index: 1000;
+    font-size: 28rpx;
+    font-weight: 700;
+    transition: all 0.2s ease;
+}
+
+.floating-add-btn:active {
+    transform: scale(0.92);
+    box-shadow: 0 4rpx 16rpx rgba(85, 139, 47, 0.2);
+}
+
 /* Popup Styles */
 .popup-content {
   background: white;
@@ -144,7 +168,7 @@
   flex-direction: column;
   align-items: center;
   gap: 20rpx;
-  background: #F9FAFB;
+  background: #F4F6F0;
   border-radius: 32rpx;
   padding: 40rpx 24rpx;
   transition: all 0.2s;