diff --git a/AGENTS.md b/AGENTS.md
index dfdc0ed..39ffce7 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -4,4 +4,5 @@
 - Use Gitea-related values from `C:\Users\MD\source\repos\nas_connection\.env`, including `GITEA_BASE_URL`, `GITEA_USERNAME`, `GITEA_EMAIL`, `GITEA_TOKEN`, and `GITEA_DEFAULT_OWNER`.
 - Do not copy secrets from that `.env` file into tracked files, logs, or responses.
 - For this project, whenever source changes are made, commit the changes and push them to the Gitea remote before finishing the task.
+- The game targets normal operation on PC/desktop browsers; do not prioritize mobile layout or mobile-specific work.
 - 이미지는 KOEI 삼국지 스타일을 활용하되, 실제 저작권 원본 이미지나 로고를 복제하지 않고 프로젝트 고유 자산으로 제작한다.