diff --git a/src/api/launch.js b/src/api/launch.js
index c9c5ac4..cadd6a5 100644
--- a/src/api/launch.js
+++ b/src/api/launch.js
@@ -83,6 +83,13 @@ export function mockRejectLaunch(id, data = {}) {
   });
 }
 
+export function getLawApproveCallbackSample(id) {
+  return request({
+    url: `/contract/launch/${id}/callback/law/approve/sample`,
+    method: "get",
+  });
+}
+
 export function saveLaunchSealInfo(id, data) {
   return request({
     url: `/contract/launch/${id}/seal/save`,
diff --git a/src/views/contract/launch/components/ContractPartyPlaceholderModal.vue b/src/views/contract/launch/components/ContractPartyPlaceholderModal.vue
index 6da348c..ec03783 100644
--- a/src/views/contract/launch/components/ContractPartyPlaceholderModal.vue
+++ b/src/views/contract/launch/components/ContractPartyPlaceholderModal.vue
@@ -424,6 +424,26 @@
                 </div>
               </div>
 
+              <div v-if="detailState.signedFilePath" class="upload-block">
+                <div class="upload-label">已签署文件</div>
+                <div class="readonly-upload-box">
+                  <div class="contract-body-entry-name">
+                    {{ detailState.signedFileName || "已签署文件" }}
+                  </div>
+                  <div class="contract-body-entry-hint">
+                    当前合同的签署完成版本
+                  </div>
+                </div>
+                <a-space style="margin-top: 8px">
+                  <a-button
+                    size="small"
+                    @click="downloadFile(detailState.signedFilePath, detailState.signedFileName || '已签署合同.pdf')"
+                  >
+                    下载
+                  </a-button>
+                </a-space>
+              </div>
+
               <a-form-item class="tight-item" label="主要内容">
                 <a-textarea
                   v-model:value="detailState.primaryContent"
diff --git a/src/views/contract/launch/index.vue b/src/views/contract/launch/index.vue
index 227cea8..6f7dcb8 100644
--- a/src/views/contract/launch/index.vue
+++ b/src/views/contract/launch/index.vue
@@ -110,9 +110,10 @@
               <a v-if="canEdit(row)" @click="handleEdit(row)">编辑</a>
               <a v-if="canSubmit(row)" @click="handleSubmit(row)">提交法务</a>
               <a v-if="canViewApprove(row)" @click="handleViewApprove(row)">审批记录</a>
+              <a v-if="canViewLawCallback(row)" @click="handleViewLawCallback(row)">回调data</a>
               <a v-if="canMockApprove(row)" @click="handleMockApprove(row)">测试通过</a>
               <a v-if="canOnlineSign(row)" @click="handleOnlineSign(row)">在线签订</a>
-              <a v-if="row.status === 'completed' && row.signedFilePath" @click="handleDownloadSigned(row)">下载签署文件</a>
+              <a v-if="canDownloadSigned(row)" @click="handleDownloadSigned(row)">下载签署文件</a>
               <a v-if="canUploadSigned(row)" @click="handleUploadSigned(row)">上传已签署版本</a>
               <a v-if="canMockFinishSign(row)" @click="handleMockFinishSign(row)">测试签署完成</a>
               <a v-if="canCollect(row)" @click="handleMockCollect(row)">测试采集</a>
@@ -166,6 +167,7 @@ import {
   createLaunchDraft,
   deleteLaunchRecord,
   getLaunchDetail,
+  getLawApproveCallbackSample,
   mockApproveLaunch,
   mockCollectLaunch,
   mockRejectLaunch,
@@ -325,12 +327,12 @@ function canMockReject(row) {
 }
 
 function canOnlineSign(row) {
-  // 签署中也可以再次调起签署（续签/补签），已完成则不能再签
-  return ["pending_sign", "signing"].includes(row.status);
+  // 在线签订只对电子合同开放；纸质/线下签署走“上传已签署版本”兜底。
+  return String(row.isElectron || "1") === "1" && ["pending_sign", "signing"].includes(row.status);
 }
 
 function canMockFinishSign(row) {
-  return ["pending_sign", "signing"].includes(row.status);
+  return String(row.isElectron || "1") === "1" && ["pending_sign", "signing"].includes(row.status);
 }
 
 function canUploadSigned(row) {
@@ -346,7 +348,15 @@ function canArchive(row) {
 }
 
 function canViewApprove(row) {
-  return ["reviewing", "pending_sign", "signing", "pending_collect", "pending_archive", "completed"].includes(row.status);
+  return Boolean(row.lawContractId) && ["reviewing", "rejected", "pending_sign", "signing", "pending_collect", "pending_archive", "completed"].includes(row.status);
+}
+
+function canViewLawCallback(row) {
+  return ["reviewing", "rejected", "pending_sign", "signing", "pending_collect", "pending_archive", "completed"].includes(row.status);
+}
+
+function canDownloadSigned(row) {
+  return Boolean(row.signedFilePath);
 }
 
 function canTerminate(row) {
@@ -533,6 +543,67 @@ function handleViewApprove(row) {
   });
 }
 
+function buildLawCallbackModalContent(sample) {
+  const approvedJson = JSON.stringify({ data: sample?.approvedData || {} }, null, 2);
+  const rejectedJson = JSON.stringify({ data: sample?.rejectedData || {} }, null, 2);
+  return h("div", { style: { display: "flex", flexDirection: "column", gap: "12px" } }, [
+    h("div", [
+      h("div", { style: { marginBottom: "6px", fontWeight: 600 } }, "回调地址"),
+      h("div", { style: { color: "#666", wordBreak: "break-all" } }, `${sample?.callbackMethod || "POST"} ${sample?.callbackUrl || "/contract/launch/callback/law/approve"}`),
+    ]),
+    h("div", [
+      h("div", { style: { marginBottom: "6px", fontWeight: 600 } }, "审批通过 data"),
+      h("pre", {
+        style: {
+          margin: 0,
+          maxHeight: "260px",
+          overflow: "auto",
+          padding: "12px",
+          borderRadius: "8px",
+          background: "#f6f8fa",
+          fontSize: "12px",
+          lineHeight: "1.6",
+          whiteSpace: "pre-wrap",
+          wordBreak: "break-word",
+        },
+      }, approvedJson),
+    ]),
+    h("div", [
+      h("div", { style: { marginBottom: "6px", fontWeight: 600 } }, "审批驳回 data"),
+      h("pre", {
+        style: {
+          margin: 0,
+          maxHeight: "220px",
+          overflow: "auto",
+          padding: "12px",
+          borderRadius: "8px",
+          background: "#f6f8fa",
+          fontSize: "12px",
+          lineHeight: "1.6",
+          whiteSpace: "pre-wrap",
+          wordBreak: "break-word",
+        },
+      }, rejectedJson),
+    ]),
+  ]);
+}
+
+function handleViewLawCallback(row) {
+  getLawApproveCallbackSample(row.id).then((res) => {
+    if (!isSuccessResponse(res) || !getDataResult(res)) {
+      message.error(getResponseMessage(res, "获取法务回调样例失败"));
+      return;
+    }
+    const sample = getDataResult(res);
+    Modal.info({
+      title: `法务回调 data 结构：${row.contractName}`,
+      width: 900,
+      okText: "知道了",
+      content: buildLawCallbackModalContent(sample),
+    });
+  });
+}
+
 function handleMockApprove(row) {
   Modal.confirm({
     title: "测试操作：模拟审批通过",