refactor: 将支持页的相关部分提取为可复用的组件

- support页的el-card，单独提取为SupportCard组件

app/components/pages/support/SupportCard.vue

@@ -0,0 +1,96 @@
+<template>
+  <el-card class="support-card">
+    <el-row>
+      <el-col :span="6">
+        <el-icon class="card-icon" size="80">
+          <component :is="iconComponent" />
+        </el-icon>
+      </el-col>
+      <el-col :span="18">
+        <div class="card-title">
+          <span>{{ title }}</span>
+        </div>
+      </el-col>
+    </el-row>
+    <el-row>
+      <div class="card-content">
+        <p>{{ description }}</p>
+      </div>
+    </el-row>
+    <el-row>
+      <NuxtLink class="card-link" :to="to">
+        <el-button class="card-button" round>
+          <span>了解更多 > </span>
+        </el-button>
+      </NuxtLink>
+    </el-row>
+  </el-card>
+</template>
+
+<script setup lang="ts">
+  defineProps({
+    title: {
+      type: String,
+      default: '',
+    },
+    description: {
+      type: String,
+      default: '',
+    },
+    to: {
+      type: String,
+      default: '',
+    },
+    iconComponent: {
+      type: Object,
+      default: null,
+    },
+  });
+</script>
+
+<style scoped>
+  .support-card {
+    width: 100%;
+    padding: 20px;
+    box-shadow: none;
+    border-radius: none;
+  }
+
+  .card-icon {
+    color: var(--el-color-primary);
+  }
+
+  .card-title {
+    display: flex;
+    height: 100%;
+    align-items: center;
+    margin-left: 2rem;
+    font-size: 1.5rem;
+    font-weight: bold;
+    color: var(--el-color-primary);
+  }
+
+  .card-link {
+    margin-left: auto;
+  }
+
+  .card-button {
+    cursor: pointer;
+    text-align: center;
+    font-size: 1rem;
+    color: var(--el-color-primary);
+    transition: all 0.3s ease;
+  }
+
+  .el-row {
+    margin-bottom: 20px;
+  }
+
+  .el-row:last-child {
+    margin-bottom: 0;
+  }
+
+  .el-col {
+    border-radius: 4px;
+  }
+</style>