diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..2f4f875
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,2 @@
+# 统一按 LF 存储，避免 Windows/macOS 之间产生 CRLF 虚假 diff
+* text=auto eol=lf