diff --git a/.github/workflows/release-acceptance.yml b/.github/workflows/release-acceptance.yml
index 17e106c..1573863 100644
--- a/.github/workflows/release-acceptance.yml
+++ b/.github/workflows/release-acceptance.yml
@@ -34,7 +34,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 20
     env:
-      STAGING_BASE_URL: ${{ secrets.STAGING_BASE_URL || vars.STAGING_BASE_URL }}
+      STAGING_BASE_URL: ${{ secrets.STAGING_BASE_URL || vars.STAGING_BASE_URL || 'https://tapi.hifast.biz' }}
     if: >-
       ${{
         github.event_name == 'workflow_dispatch' ||
@@ -65,7 +65,7 @@ jobs:
           ACCEPTANCE_ADMIN_PASSWORD: ${{ secrets.ACCEPTANCE_ADMIN_PASSWORD }}
           ACCEPTANCE_USER_EMAIL: ${{ secrets.ACCEPTANCE_USER_EMAIL }}
           ACCEPTANCE_USER_PASSWORD: ${{ secrets.ACCEPTANCE_USER_PASSWORD }}
-          STAGING_BASE_URL: ${{ secrets.STAGING_BASE_URL || vars.STAGING_BASE_URL }}
+          STAGING_BASE_URL: ${{ secrets.STAGING_BASE_URL || vars.STAGING_BASE_URL || 'https://tapi.hifast.biz' }}
           STAGING_DB_HOST: ${{ secrets.STAGING_DB_HOST }}
           STAGING_DB_USER: ${{ secrets.STAGING_DB_USER }}
           STAGING_DB_PASSWORD: ${{ secrets.STAGING_DB_PASSWORD }}
@@ -75,13 +75,24 @@ jobs:
         run: |
           set -euo pipefail
 
-          missing=()
-          required=(
+          if [ -z "${STAGING_BASE_URL:-}" ]; then
+            echo "STAGING_BASE_URL 未配置且默认值不可用" | tee "$ACCEPTANCE_FAILURE_LOG"
+            {
+              echo "## 发布验收测试"
+              echo
+              echo "状态：配置错误"
+              echo
+              echo "- `STAGING_BASE_URL` 不能为空。"
+            } >> "$GITHUB_STEP_SUMMARY"
+            exit 1
+          fi
+
+          missing_optional=()
+          optional=(
             ACCEPTANCE_ADMIN_EMAIL
             ACCEPTANCE_ADMIN_PASSWORD
             ACCEPTANCE_USER_EMAIL
             ACCEPTANCE_USER_PASSWORD
-            STAGING_BASE_URL
             STAGING_DB_HOST
             STAGING_DB_USER
             STAGING_DB_PASSWORD
@@ -90,24 +101,35 @@ jobs:
             STAGING_REDIS_PASSWORD
           )
 
-          for key in "${required[@]}"; do
+          for key in "${optional[@]}"; do
             if [ -z "${!key:-}" ]; then
-              missing+=("$key")
+              missing_optional+=("$key")
             fi
           done
 
-          if [ "${#missing[@]}" -gt 0 ]; then
-            printf '缺少必需 GitHub Actions secrets/vars：\n' | tee "$ACCEPTANCE_FAILURE_LOG"
-            printf -- '- %s\n' "${missing[@]}" | tee -a "$ACCEPTANCE_FAILURE_LOG"
+          : > "$ACCEPTANCE_FAILURE_LOG"
+
+          if [ "${#missing_optional[@]}" -gt 0 ]; then
+            printf '缺少可选 GitHub Actions secrets/vars，部分验收用例将被跳过：\n' | tee -a "$ACCEPTANCE_FAILURE_LOG"
+            printf -- '- %s\n' "${missing_optional[@]}" | tee -a "$ACCEPTANCE_FAILURE_LOG"
             {
               echo "## 发布验收测试"
               echo
-              echo "状态：配置缺失"
+              echo "状态：部分配置缺失"
               echo
-              echo "缺少以下 secrets/vars："
-              printf -- '- `%s`\n' "${missing[@]}"
+              echo "缺少以下可选 secrets/vars，对应验收用例会在测试阶段自动跳过："
+              printf -- '- `%s`\n' "${missing_optional[@]}"
+              echo
+              echo "- `STAGING_BASE_URL`：${STAGING_BASE_URL}"
+            } >> "$GITHUB_STEP_SUMMARY"
+          else
+            {
+              echo "## 发布验收测试"
+              echo
+              echo "状态：配置检查通过"
+              echo
+              echo "- `STAGING_BASE_URL`：${STAGING_BASE_URL}"
             } >> "$GITHUB_STEP_SUMMARY"
-            exit 1
           fi
 
       - name: 下载依赖模块
diff --git a/tests/acceptance/README.md b/tests/acceptance/README.md
index 65a4eba..7afb09c 100644
--- a/tests/acceptance/README.md
+++ b/tests/acceptance/README.md
@@ -10,9 +10,11 @@ go test ./tests/acceptance/... -staging-url=https://tapi.hifast.biz
 
 Without credentials, tests that require admin/user login or NodeSecret are skipped and unauthenticated error-path checks still run.
 
-## Required secrets
+## Workflow configuration
 
-The staging workflow should provide these values through GitHub Actions secrets or environment variables:
+`STAGING_BASE_URL` should be provided through GitHub Actions secrets or variables. When omitted, the workflow falls back to `https://tapi.hifast.biz`.
+
+The following secrets are optional. When any of them are missing, the workflow still runs and the corresponding acceptance cases are skipped automatically:
 
 - `ACCEPTANCE_ADMIN_EMAIL`
 - `ACCEPTANCE_ADMIN_PASSWORD`
@@ -24,7 +26,6 @@ The staging workflow should provide these values through GitHub Actions secrets
 - `STAGING_DB_NAME`
 - `STAGING_REDIS_ADDR`
 - `STAGING_REDIS_PASSWORD`
-- `STAGING_BASE_URL`
 
 `ACCEPTANCE_NODE_SECRET` is optional. When DB credentials are present, the loader reads NodeSecret from the staging `system` table instead of storing it as a long-lived secret.