feat(ui): CMA前端UI优化P0 - BSC变量+公共类+统一标题+色值替换+内联style替换

frontend/src/views/KPIAlignment.vue

@@ -14,7 +14,7 @@
 
     <!-- 模式选择器 -->
     <div v-if="showSelector" class="align-setup">
-      <el-alert v-if="!alignConfigured" title="系统尚未配置KPI对齐模式" type="warning" :closable="false" show-icon style="margin-bottom:16px;" />
+      <el-alert v-if="!alignConfigured" title="系统尚未配置KPI对齐模式" type="warning" :closable="false" show-icon class="section-gap" />
       <div style="display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px;">
         <el-card v-for="mode in alignModes" :key="mode.key"
           :class="{ 'mode-card': true, 'selected-mode': selectedMode === mode.key }"