feat: 整体页面优化，删除无用svg

pages/wiki/index.wxss

@@ -19,15 +19,71 @@
    Usually easier to apply padding to the items or a wrapper inside scroll-view. */
 
 .search-section {
-    padding: 20rpx 40rpx 0;
+    padding: 24rpx 40rpx 0;
     margin-bottom: 32rpx;
 }
 
+.search-box-card {
+    background: #fff;
+    border-radius: 40rpx;
+    padding: 16rpx 20rpx;
+    box-shadow: 0 8rpx 24rpx rgba(85, 139, 47, 0.08); /* Green-tinted shadow */
+}
+
+/* Override TDesign Search */
+.search-input-bg {
+    background: #F4F6F0 !important; /* Light green-grey */
+    border-radius: 32rpx !important;
+    height: 80rpx !important;
+}
+.t-search__input-container {
+    height: 80rpx !important;
+}
+
+/* Category Scroll */
 .category-scroll {
-  display: flex;
-  flex-wrap: wrap;
-  padding: 0 40rpx;
-  margin-bottom: 48rpx;
+    display: flex;
+    white-space: nowrap;
+    padding-left: 40rpx;
+    margin-bottom: 40rpx;
+    height: 88rpx; 
+    width: 100%;
+    box-sizing: border-box;
+}
+
+/* Hide scrollbar for webkit */
+.category-scroll::-webkit-scrollbar {
+  display: none;
+}
+
+.category-item {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    padding: 0 36rpx;
+    height: 72rpx;
+    background: #fff;
+    border-radius: 36rpx;
+    margin-right: 24rpx;
+    font-size: 28rpx;
+    color: #546E7A;
+    font-weight: 600;
+    box-shadow: 0 4rpx 12rpx rgba(0,0,0,0.04);
+    transition: all 0.2s cubic-bezier(0.25, 0.8, 0.25, 1);
+    flex-shrink: 0;
+    border: 2rpx solid transparent; /* Reserve border space */
+}
+
+.category-item:active {
+    transform: scale(0.95);
+}
+
+.category-item.active {
+    background: #558B2F;
+    color: #fff;
+    font-weight: 700;
+    box-shadow: 0 8rpx 20rpx rgba(85, 139, 47, 0.3);
+    border-color: #558B2F;
 }
 
 .wiki-list {
@@ -59,6 +115,28 @@
   box-shadow: 0 8rpx 20rpx rgba(0,0,0,0.1);
   flex-shrink: 0;
   background: #f0f0f0;
+  position: relative;
+}
+
+.fav-icon-box {
+  position: absolute;
+  top: 10rpx;
+  right: 10rpx;
+  width: 56rpx;
+  height: 56rpx;
+  background: rgba(255, 255, 255, 0.85);
+  backdrop-filter: blur(4px);
+  border-radius: 50%;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 5;
+  box-shadow: 0 4rpx 12rpx rgba(0,0,0,0.1);
+}
+
+.fav-icon-box:active {
+  transform: scale(0.9);
+  transition: transform 0.1s;
 }
 .wiki-image image { width: 100%; height: 100%; display: block; }
 .wiki-image-placeholder {