修复 DeepSeek 图标显示

index.html

@@ -34,7 +34,7 @@
           Gemini ↗
         </a>
         <a class="quick-link deepseek" href="https://platform.deepseek.com/" target="_blank" rel="noreferrer">
-          <img src="assets/icons/deepseek.ico" alt="" aria-hidden="true" />
+          <img src="assets/icons/deepseek.svg" alt="" aria-hidden="true" />
           DeepSeek ↗
         </a>
       </div>
@@ -135,7 +135,7 @@
             rel="noreferrer"
             aria-label="打开 DeepSeek 开发平台"
           >
-            <span class="service-icon"><img src="assets/icons/deepseek.ico" alt="" aria-hidden="true" /></span>
+            <span class="service-icon"><img src="assets/icons/deepseek.svg" alt="" aria-hidden="true" /></span>
             <span class="service-title">DeepSeek</span>
             <span class="service-desc">开发平台</span>
             <span class="arrow-button">→</span>