diff --git a/index.html b/index.html
index 4f013fe..2bb739d 100644
--- a/index.html
+++ b/index.html
@@ -308,15 +308,15 @@
                   class="absolute left-3 top-1/2 -translate-y-1/2 text-indigo-400 pointer-events-none text-lg z-10"><i
                     class="fas fa-keyboard"></i></span>
                 <input type="text" id="game" name="game" required placeholder="游戏或补丁关键字词"
-                  class="pl-10 pr-4 h-11 border border-gray-300 rounded-t-[8px] focus:outline-none bg-gray-50 text-base shadow-sm transition w-full placeholder-gray-400 min-w-0 flex-1 rounded-b-none"
+                  class="pl-10 pr-4 h-11 border border-gray-300 border-b-gray-200 rounded-t-[8px] focus:outline-none bg-gray-50 text-base shadow-sm transition w-full placeholder-gray-400 min-w-0 flex-1 rounded-b-none"
                   autocomplete="off" spellcheck="false" />
               </div>
               <div class="relative flex items-center w-full">
                 <span
                   class="absolute left-3 top-1/2 -translate-y-1/2 text-purple-400 pointer-events-none text-base z-10"><i
                     class="fas fa-code"></i></span>
-                <input type="text" id="customApi" name="customApi" placeholder="自定义 API 地址"
-                  class="pl-10 pr-4 sm:pr-48 h-11 border border-t-0 border-gray-300 rounded-b-[8px] focus:outline-none bg-gray-50 text-base shadow-sm transition w-full placeholder-gray-400 rounded-t-none"
+                <input type="text" id="customApi" name="customApi" placeholder="自定义 API 地址 (可选)"
+                  class="pl-10 pr-4 sm:pr-48 h-11 border border-t-0 border-gray-300 rounded-b-[8px] focus:outline-none bg-gray-50 text-sm shadow-sm transition w-full placeholder-gray-400 rounded-t-none"
                   autocomplete="off" spellcheck="false" aria-describedby="apiHint" />
                 <span id="apiHint"
                   class="hidden sm:block absolute right-3 top-1/2 -translate-y-1/2 text-[11px] text-gray-500 pointer-events-none z-10 transition-opacity duration-200"