diff --git a/index.html b/index.html
index 1c15fe1..6217858 100644
--- a/index.html
+++ b/index.html
@@ -54,12 +54,13 @@ <h1>Haokai Ding (丁浩剀)</h1>
             <a href="mailto:hk_ding@outlook.com">hk_ding@outlook.com</a> |
             <a href="mailto:202200101041@stumail.sztu.edu.cn">202200101041@stumail.sztu.edu.cn</a> |
             <a href="mailto:dinghaokai@mails.x-institute.edu.cn">dinghaokai@mails.x-institute.edu.cn</a><br>
-            <a href="https://scholar.google.com/citations?user=ikir1CUAAAAJ&hl=en" target="_blank" rel="noopener noreferrer">Google Scholar</a> |
-            <a href="https://orcid.org/0009-0001-6158-9897" target="_blank" rel="noopener noreferrer">ORCID</a>
-          </p>
-        </div>
-      </div>
-    </header>
+            <a href="https://scholar.google.com/citations?user=ikir1CUAAAAJ&hl=en" target="_blank" rel="noopener noreferrer">Google Scholar</a> |
+            <a href="https://orcid.org/0009-0001-6158-9897" target="_blank" rel="noopener noreferrer">ORCID</a><br>
+            <a class="cv-btn" href="pdfs/HaokaiDing_CV_EN.pdf" target="_blank" rel="noopener noreferrer"><span class="lang-en">Download CV</span><span class="lang-zh">下载简历</span></a>
+          </p>
+        </div>
+      </div>
+    </header>
 
     <main class="main-content page-avoid" id="cv-main">
       <!-- About -->
diff --git a/styles.css b/styles.css
index 7a181d1..e65215b 100644
--- a/styles.css
+++ b/styles.css
@@ -20,17 +20,19 @@
     #lang-switcher a{color:#888;font-weight:700;text-decoration:none;padding:4px 8px;border-radius:4px;transition:all .2s}
     #lang-switcher a.active{color:var(--brand);background:#e7f1ff}
 
-    /* 导航 */
-    nav.site-nav{background:#f5f5f5;padding:10px 12px;border-radius:12px;margin-bottom:16px;display:flex;gap:12px;flex-wrap:wrap}
-    nav.site-nav a{text-decoration:none;font-family:'Lato',sans-serif;font-weight:700;color:var(--brand);padding:8px 12px;border-radius:999px;background:#fff;border:1px solid #e7f1ff}
-    nav.site-nav a:hover{background:#e7f1ff}
+      /* 导航 */
+      nav.site-nav{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-bottom:16px}
+      nav.site-nav a{text-decoration:none;font-family:'Lato',sans-serif;font-weight:700;color:var(--brand);padding:8px 12px;border-radius:999px;background:#fff;border:1px solid #e7f1ff}
+      nav.site-nav a:hover{background:#e7f1ff}
 
     /* 头部/头像 */
     header{display:flex;align-items:flex-start;margin-bottom:25px}
     .header-info h1{font-family:'Lato',sans-serif;font-size:2.2em;font-weight:700;margin:0 0 10px 0}
     .contact-info p{margin:0;line-height:1.5;font-size:.95em;color:#444}
-    .contact-info a{color:var(--brand);text-decoration:none}
-    .contact-info a:hover{text-decoration:underline}
+      .contact-info a{color:var(--brand);text-decoration:none}
+      .contact-info a:hover{text-decoration:underline}
+      .cv-btn{display:inline-block;margin-top:8px;padding:8px 16px;font-family:'Lato',sans-serif;font-weight:700;color:var(--brand);background:#fff;border:1px solid #e7f1ff;border-radius:999px;text-decoration:none}
+      .cv-btn:hover{background:#e7f1ff}
 
     .profile-container{position:relative;width:120px;height:120px;margin-right:30px;border-radius:10px;overflow:hidden;flex-shrink:0}
     .profile-image{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;border-radius:10px;transition:opacity .4s ease}
@@ -106,8 +108,9 @@
     .dark-mode .contact-info p,.dark-mode .entry-date,.dark-mode .pub-authors,.dark-mode .pub-venue,.dark-mode .award-year{color:#aaa}
     .dark-mode .contact-info a,.dark-mode .entry-details a,.dark-mode .pub-links > a,.dark-mode .pub-links > .pdf-link{color:#8ab4f8}
     .dark-mode hr{background:#444}
-    .dark-mode nav.site-nav{background:#2a2a2a}
-    .dark-mode nav.site-nav a{color:#8ab4f8;background:#333;border-color:#444}
+      .dark-mode nav.site-nav a{color:#8ab4f8;background:#333;border-color:#444}
+      .dark-mode .cv-btn{color:#8ab4f8;background:#333;border-color:#444}
+      .dark-mode .cv-btn:hover{background:#2a2a2a}
     .dark-mode .advisor-badge{border-color:#ffc266;color:#ffc266}
 
     /* 返回顶部 */