diff --git a/frontend/pages/dashboard/components/CrystalOverview.vue b/frontend/pages/dashboard/components/CrystalOverview.vue
new file mode 100644
index 0000000..c967167
--- /dev/null
+++ b/frontend/pages/dashboard/components/CrystalOverview.vue
@@ -0,0 +1,119 @@
+<template>
+  <view class="crystal-overview">
+    <!-- 错误态 -->
+    <view v-if="error" class="error-card" @tap="$emit('retry')">
+      <text class="error-text">加载失败，点击重试</text>
+    </view>
+
+    <!-- 骨架态 -->
+    <view v-else-if="loading || !data" class="skeleton-row">
+      <view v-for="i in 2" :key="i" class="skeleton-card"></view>
+    </view>
+
+    <!-- 正常态 -->
+    <view v-else class="card-row">
+      <view class="data-card card-crystal">
+        <text class="card-label">水晶余额</text>
+        <text class="card-value">{{ data.crystal_balance }}</text>
+      </view>
+      <view class="data-card card-today">
+        <text class="card-label">今日收益</text>
+        <text class="card-value">+ {{ data.today_income }}</text>
+      </view>
+    </view>
+  </view>
+</template>
+
+<script setup>
+defineProps({
+  data: { type: Object, default: null }, // { crystal_balance, today_income, week_rank? }
+  loading: { type: Boolean, default: false },
+  error: { type: String, default: null },
+})
+defineEmits(['retry'])
+</script>
+
+<style lang="scss" scoped>
+.crystal-overview {
+  margin: 24rpx 0;
+}
+
+.card-row {
+  display: flex;
+  gap: 16rpx;
+}
+
+.data-card {
+  flex: 1;
+  height: 200rpx;
+  border-radius: 22rpx;
+  display: flex;
+  flex-direction: column;
+  align-items: center;
+  justify-content: center;
+  position: relative;
+  overflow: hidden;
+}
+
+.card-crystal {
+  background: linear-gradient(135deg, #FFDF77 0%, #8E95E2 40%, #F48CFF 100%);
+  box-shadow: 0px 4px 4px rgba(189, 50, 50, 0.25);
+}
+
+.card-today {
+  background: linear-gradient(137deg, #FFDF77 0%, #8E95E2 40%, #F48CFF 100%);
+  box-shadow: 0px 4px 4px rgba(189, 50, 50, 0.25);
+}
+
+.card-label {
+  font-size: 24rpx;
+  color: #ffffff;
+  text-shadow: 0px 4px 4px rgba(164, 60, 60, 0.55);
+  margin-bottom: 12rpx;
+}
+
+.card-value {
+  font-size: 70rpx;
+  font-weight: 700;
+  color: #FFFABD;
+  text-shadow: -1px 1px 4px rgba(206, 9, 9, 0.84);
+  font-family: 'Baloo Bhai', sans-serif;
+  line-height: 1;
+}
+
+/* 骨架态 */
+.skeleton-row {
+  display: flex;
+  gap: 16rpx;
+}
+
+.skeleton-card {
+  flex: 1;
+  height: 200rpx;
+  border-radius: 22rpx;
+  background: linear-gradient(90deg, rgba(255, 255, 255, 0.1) 25%, rgba(255, 255, 255, 0.2) 50%, rgba(255, 255, 255, 0.1) 75%);
+  background-size: 200% 100%;
+  animation: skeleton-shimmer 1.5s infinite;
+}
+
+@keyframes skeleton-shimmer {
+  0% { background-position: 200% 0; }
+  100% { background-position: -200% 0; }
+}
+
+/* 错误态 */
+.error-card {
+  height: 200rpx;
+  border-radius: 22rpx;
+  background: rgba(255, 100, 100, 0.15);
+  border: 2rpx solid rgba(255, 100, 100, 0.4);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.error-text {
+  color: #ff8080;
+  font-size: 28rpx;
+}
+</style>
diff --git a/frontend/pages/dashboard/dashboard.vue b/frontend/pages/dashboard/dashboard.vue
index 1b5cf4a..0987103 100644
--- a/frontend/pages/dashboard/dashboard.vue
+++ b/frontend/pages/dashboard/dashboard.vue
@@ -7,9 +7,12 @@
 
     <!-- Tab 1: 水晶相关 -->
     <view v-if="activeTab === 'crystal'" class="dashboard-content">
-      <view class="placeholder-section">
-        <text class="placeholder-text">骨架页（组件将在 Task 5-10 添加）</text>
-      </view>
+      <CrystalOverview
+        :data="data.today"
+        :loading="loading.today"
+        :error="error.today"
+        @retry="refresh('today')"
+      />
     </view>
 
     <!-- Tab 2: 赛季总览（占位） -->
@@ -26,6 +29,7 @@
 <script setup>
 import { ref, onUnmounted } from 'vue'
 import DashboardHeader from './components/DashboardHeader.vue'
+import CrystalOverview from './components/CrystalOverview.vue'
 import { useDashboardData } from '@/composables/useDashboardData'
 
 const pageBg = 'linear-gradient(153deg, #FF9597 0%, #80DFFF 33%, #B8B8B8 74%, #D9D9D9 100%)'
@@ -33,7 +37,7 @@ const pageBg = 'linear-gradient(153deg, #FF9597 0%, #80DFFF 33%, #B8B8B8 74%, #D
 const activeTab = ref('crystal')
 const starId = ref(uni.getStorageSync('star_id') || null)
 
-const { loading, error, data, isReady, dispose } = useDashboardData({
+const { loading, error, data, refresh, isReady, dispose } = useDashboardData({
   starId: starId.value,
 })