style(views): 统一多个视图的导航栏和标签页样式

调整多个视图的导航栏背景为透明，统一标签页的边距和样式
优化禁用状态的箭头样式，增加指针事件控制

Web/src/views/StatisticsView.vue

@@ -49,6 +49,7 @@
               <div 
                 class="nav-arrow right" 
                 :class="{ disabled: isCurrentMonth }"
+                :aria-disabled="isCurrentMonth"
                 @click.stop="!isCurrentMonth && changeMonth(1)"
               >
                 <van-icon name="arrow" />
@@ -1040,9 +1041,14 @@ onBeforeUnmount(() => {
 }
 
 .nav-arrow.disabled {
-  color: #f2f3f5;
+  color: #c8c9cc;
   cursor: not-allowed;
-  opacity: 0.3;
+  opacity: 0.35;
+  pointer-events: none;
+}
+
+.nav-arrow.disabled:active {
+  background-color: transparent;
 }
 
 .date-tag {
@@ -1420,4 +1426,4 @@ onBeforeUnmount(() => {
   background: transparent !important;
 }
 
-</style>
+</style>