/* 悬浮按钮 */
 #chat-float-btn {
     position: fixed;
     bottom: 20px;
     right: 20px;
     width: 50px;
     height: 50px;
     background-color: #25D366;
     color: white;
     font-size: 24px;
     text-align: center;
     line-height: 50px;
     border-radius: 50%;
     cursor: pointer;
     box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
 }

 /* 聊天窗口 */
 #chat-window {
     position: fixed;
     bottom: 80px;
     right: 20px;
     width: 300px;
     background: white;
     border-radius: 10px;
     box-shadow: 2px 2px 10px rgba(0, 0, 0, 0.3);
     display: none;
     flex-direction: column;
     border: 1px solid #ccc;
     padding: 10px;
     text-align: center;
 }

 /* 标题栏 */
 #chat-header {
     background-color: #25D366;
     color: white;
     padding: 10px;
     font-size: 16px;
     font-weight: bold;
     text-align: center;
     position: relative;
 }

 #chat-close-btn {
     position: absolute;
     right: 10px;
     top: 5px;
     background: none;
     border: none;
     font-size: 18px;
     color: white;
     cursor: pointer;
 }

 /* 按钮样式 */
 .chat-option {
     display: flex;
     align-items: center;
     justify-content: center;
     padding: 10px;
     margin: 5px;
     border-radius: 5px;
     cursor: pointer;
     font-size: 16px;
     border: 1px solid #ccc;
     transition: background 0.3s;
 }

 .chat-option:hover {
     background: #f1f1f1;
 }

 /* 图标 */
 .chat-option img {
     width: 24px;
     height: 24px;
     margin-right: 10px;
 }

 /* 微信二维码 */
 #wechat-qr {
     display: none;
     width: 200px;
     margin: 10px auto;
 }