      <h2>使用统计</h2>
            <div class="stats-grid">
                <div class="stat-card">
                    <div class="stat-value" id="conversion-count">0</div>
                    <div class="stat-label">转换次数</div>
                </div>
                <div class="stat-card">
                    <div class="stat-value" id="subtitle-count">0</div>
                    <div class="stat-label">生成字幕数</div>
                </div>
                <div class="stat-car