 }}</h5>
        </div>

        <!-- 退出按钮 -->
        <button class="exit-btn" onclick="exitPresentation()" title="退出演示 (ESC)">
            <i class="fas fa-times"></i>
        </button>

        <!-- 主要幻灯片显示区域 -->
        <div class="slide-display">
            <div class="loading-overlay" id="loadingOverlay">
                <div class="loading-spinner"></div>
            </div>
            <div class="slide-frame-container" id="slideFrameContainer">
                <!--