html, body {
  height: 100%;
  margin: 0;
}

/* 自定义悬浮球样式 */
#custom-chat-btn {
    position: fixed;
    bottom: 50px;
    right: 50px;
    width: 50px;
    height: 50px;
    background: #4a6cf7;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.2);
    z-index: 500; /* 设置为比聊天窗口低的z-index */
}

#custom-chat-btn img {
    width: 50px;
    height: 50px;
}

@media (max-width: 768px) {
    #custom-chat-btn {
        width: 50px;
        height: 50px;
        bottom: 250px;
        right: 30px;
    }
    #custom-chat-btn img {
        width: 850px;
        height: 50px;
    }
}