.gitattributes

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+# 大二进制文件走 Git LFS，避免仓库膨胀 / 网页预览超时
+# 提交这类文件前，先在本机执行一次： git lfs install
+*.pptx filter=lfs diff=lfs merge=lfs -text
+*.ppt  filter=lfs diff=lfs merge=lfs -text
+*.docx filter=lfs diff=lfs merge=lfs -text
+*.doc  filter=lfs diff=lfs merge=lfs -text
+*.xlsx filter=lfs diff=lfs merge=lfs -text
+*.xls  filter=lfs diff=lfs merge=lfs -text
+*.pdf  filter=lfs diff=lfs merge=lfs -text
+*.zip  filter=lfs diff=lfs merge=lfs -text
+*.rar  filter=lfs diff=lfs merge=lfs -text
+*.7z   filter=lfs diff=lfs merge=lfs -text
+*.mp4  filter=lfs diff=lfs merge=lfs -text
+*.mov  filter=lfs diff=lfs merge=lfs -text
+*.psd  filter=lfs diff=lfs merge=lfs -text
+*.ai   filter=lfs diff=lfs merge=lfs -text