             <h3 class="text-lg font-semibold text-gray-900">代码预览 - 参数替换后</h3>
                <button @click="showPreviewModal = false"
                        class="text-gray-400 hover:text-gray-600">
                    <i class="fas fa-times text-xl"></i>
                </button>
            </div>
            <div class="flex-1 p-4 overflow-hidden">
                <pre class="bg-gray-50 p-4 rounded text-sm font-mono h-full overflow-auto">{{ previewCode }}</pre>
            </div>
 