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            const interval = setInterval(() => {
              progress += 10;
              progressBar.textContent = `正在安装 ${progress}%`;
              
              // 进度条颜色变化
              if (progress >= 30) progressBar.classList.add('bg-secondary');
              if (progress >= 70) progressBar.classList.add('bg-success');
              
              if (progress >= 100) {
                clearInterval(interval);
                progressBar.textContent = '安装完成';
    