first add files

ProjectLiaisonForm/pages/checkbox/card/index.js

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+Component({
+  /**
+   * 组件的初始数据
+   */
+  data: {
+    checked: true,
+  },
+
+  /**
+   * 组件的方法列表
+   */
+  methods: {
+    changeChecked(e) {
+      this.setData({
+        checked: e.detail.checked,
+      });
+    },
+  },
+});

ProjectLiaisonForm/pages/checkbox/card/index.json

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+{
+  "component": true,
+  "usingComponents": {
+    "t-checkbox-group": "tdesign-miniprogram/checkbox-group/checkbox-group",
+    "t-checkbox": "tdesign-miniprogram/checkbox/checkbox"
+  }
+}

ProjectLiaisonForm/pages/checkbox/card/index.wxml

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+<t-checkbox-group t-class="theme-card" default-value="{{['1', '2']}}">
+  <t-checkbox value="1" label="多选" />
+  <t-checkbox value="2" label="多选" />
+  <t-checkbox value="3" label="多选标题多行多选标题多行多选标题多行多选标题多行多选标题多行多选标题" />
+</t-checkbox-group>

ProjectLiaisonForm/pages/checkbox/card/index.wxss

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+.theme-card {
+  border-radius: 24rpx;
+  margin: 32rpx;
+  overflow: hidden;
+}