         <button class="nav-link active" id="chat-tab" data-bs-toggle="tab" data-bs-target="#chat" type="button" role="tab" aria-controls="chat" aria-selected="true">对话模式</button>
                            </li>
                            <li class="nav-item" role="presentation">
                                <button class="nav-link" id="tts-tab" data-bs-toggle="tab" data-bs-target="#tts" type="button" role="tab" aria-controls="tts" aria-selected="false">朗读模式</button>
                  