fix: 金额输入框样式优化 + 预算页键盘遮挡修复 + admin 样式修复

- AmountEditor: 未聚焦时透明，聚焦时粘土卡片浮起；¥/单位 baseline 对齐
- budget: 补充 Numpad 占位高度，auto-focus 改为 false 缩短页面
- admin/feedback: 补充 modal-mask mixin
- admin/track: filter-tabs 与 scroll-view 分离 + 格式化

client/src/components/AmountEditor/AmountEditor.vue

@@ -128,60 +128,54 @@ defineExpose({ focus, blur })
   width: 100%;
 }
 
+// 金额显示区 — 未聚焦时低调，聚焦时粘土卡片浮起
 .amount-display {
-  min-height: 156rpx;
-  padding: $space-lg $space-xl;
-  background: $surface;
-  border: 2rpx solid $border;
-  border-radius: $radius-2xl;
-  box-shadow: $shadow-clay;
   display: flex;
-  align-items: center;
+  align-items: baseline;
   justify-content: center;
-  gap: $space-xs;
+  gap: 8rpx;
+  padding: $space-lg $space-xl $space-md;
+  border-radius: $radius-xl;
+  border: 2rpx solid transparent;
+  background: transparent;
+  transition: background $transition-normal, border-color $transition-normal, box-shadow $transition-normal;
   -webkit-tap-highlight-color: transparent;
-  transition: border-color $transition-normal, box-shadow $transition-normal, transform $transition-fast;
-
-  &:active {
-    transform: scale(0.99);
-  }
 }
 
 .amount-editor--focused .amount-display {
-  border-color: $primary-light;
-  box-shadow: $shadow-clay, 0 8rpx 24rpx rgba(255, 140, 105, 0.16);
+  background: $surface;
+  border-color: $border;
+  box-shadow: $shadow-clay;
 }
 
-.currency,
+// ¥ 符号
+.currency {
+  flex-shrink: 0;
+  font-family: 'Fredoka', sans-serif;
+  font-weight: 500;
+  color: $text-muted;
+  line-height: 1.2;
+}
+
+// 单位（元）
 .unit {
   flex-shrink: 0;
-  color: $text-sec;
   font-weight: 600;
+  color: $text-sec;
+  line-height: 1.2;
 }
 
-.currency {
-  align-self: flex-start;
-  margin-top: 12rpx;
-  font-family: 'Fredoka', sans-serif;
-  font-size: 40rpx;
-}
-
-.unit {
-  align-self: flex-end;
-  margin-bottom: 14rpx;
-  font-size: $font-md;
-}
-
+// 金额字符容器
 .amount-value {
   min-width: 0;
   display: flex;
-  align-items: center;
+  align-items: baseline;
   justify-content: center;
   flex-wrap: wrap;
   font-family: 'Fredoka', sans-serif;
   font-weight: 700;
   color: $text;
-  line-height: 1.1;
+  line-height: 1.2;
   word-break: break-all;
 }
 
@@ -189,7 +183,6 @@ defineExpose({ focus, blur })
 .placeholder {
   display: inline-flex;
   align-items: center;
-  min-height: 1.1em;
 }
 
 .amount-char {
@@ -197,9 +190,10 @@ defineExpose({ focus, blur })
 }
 
 .placeholder {
-  color: $text-muted;
+  color: #D0C4C4;
 }
 
+// 光标
 .cursor {
   width: 4rpx;
   height: 1em;
@@ -209,11 +203,11 @@ defineExpose({ focus, blur })
   animation: cursor-blink 1s steps(2, start) infinite;
 }
 
+// ===== 尺寸变体 =====
+
 .amount-editor--small {
   .amount-display {
-    min-height: 112rpx;
     padding: $space-md $space-lg;
-    border-radius: $radius-xl;
   }
 
   .amount-value {
@@ -221,14 +215,17 @@ defineExpose({ focus, blur })
   }
 
   .currency {
-    margin-top: 6rpx;
     font-size: 28rpx;
   }
+
+  .unit {
+    font-size: $font-sm;
+  }
 }
 
 .amount-editor--medium {
   .amount-display {
-    min-height: 132rpx;
+    padding: $space-md $space-xl;
   }
 
   .amount-value {
@@ -238,12 +235,24 @@ defineExpose({ focus, blur })
   .currency {
     font-size: 34rpx;
   }
+
+  .unit {
+    font-size: $font-md;
+  }
 }
 
 .amount-editor--large {
   .amount-value {
     font-size: 88rpx;
   }
+
+  .currency {
+    font-size: 40rpx;
+  }
+
+  .unit {
+    font-size: $font-lg;
+  }
 }
 
 @keyframes cursor-blink {