Update README.md

README.md

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 license: cc-by-4.0
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-# LastingBench: Defend Benchmarks Against Knowledge Leakage.
+# 📄 Paper
+
+<iframe
+  src="https://huggingface.co/kixx/LastingBench/resolve/main/paper.pdf#toolbar=0"
+  width="100%"
+  height="900"
+  style="border:none;">
+</iframe>
+
+<!-- 兼容备用： -->
+<p><a href="https://huggingface.co/kixx/LastingBench/resolve/main/paper.pdf">📥 Download the PDF</a></p>
 
-<iframe src="https://huggingface.co/kixx/LastingBench/resolve/main/paper.pdf"
-        width="100%"
-        height="700"></iframe>
+
+# LastingBench: Defend Benchmarks Against Knowledge Leakage.
 
 Welcome to the repository for the research paper: "LastingBench: Defend Benchmarks Against Knowledge Leakage." This project addresses the growing concern about large language models (LLMs) "cheating" on standard Question Answering (QA) benchmarks by memorizing task-specific data, which undermines the validity of benchmark evaluations as they no longer reflect genuine model capabilities but instead the effects of data leakage.