diff --git a/.gitignore b/.gitignore
index 037e2a3..fb511a8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -52,7 +52,7 @@ Thumbs.db
 .env
 *.env
 
-# === LaTeX 编译产物 ===
+# === LaTeX 编译产物 & PDF ===
 paper/*.aux
 paper/*.bbl
 paper/*.blg
@@ -62,3 +62,4 @@ paper/*.out
 paper/*.fls
 paper/*.fdb_latexmk
 paper/*.synctex.gz
+paper/*.pdf
diff --git a/paper/main.pdf b/paper/main.pdf
deleted file mode 100644
index 59d3a0e..0000000
Binary files a/paper/main.pdf and /dev/null differ