diff --git a/.gitea/workflows/autograde.yml b/.gitea/workflows/autograde.yml
index 037b242..f4f7c43 100644
--- a/.gitea/workflows/autograde.yml
+++ b/.gitea/workflows/autograde.yml
@@ -157,11 +157,8 @@ jobs:
       
       - name: Grade REPORT.md
         working-directory: ${{ github.workspace }}
-        env:
-          LLM_API_KEY: ${{ secrets.LLM_API_KEY }}
-          LLM_API_URL: ${{ secrets.LLM_API_URL }}
-          LLM_MODEL: ${{ secrets.LLM_MODEL }}
         run: |
+          # LLM env vars are injected by Runner config (LLM_API_KEY, LLM_API_URL, LLM_MODEL)
           if [ -f REPORT.md ] && [ -f .llm_rubrics/rubric_report.json ]; then
             python3 ./.autograde/llm_grade.py \
               --question "请评估这份后端与系统设计报告" \
@@ -177,11 +174,8 @@ jobs:
       
       - name: Grade FRONTEND.md
         working-directory: ${{ github.workspace }}
-        env:
-          LLM_API_KEY: ${{ secrets.LLM_API_KEY }}
-          LLM_API_URL: ${{ secrets.LLM_API_URL }}
-          LLM_MODEL: ${{ secrets.LLM_MODEL }}
         run: |
+          # LLM env vars are injected by Runner config (LLM_API_KEY, LLM_API_URL, LLM_MODEL)
           if [ -f FRONTEND.md ] && [ -f .llm_rubrics/rubric_frontend.json ]; then
             python3 ./.autograde/llm_grade.py \
               --question "请评估这份前端界面与交互设计报告" \