课堂挑战台快速知识问答
在课堂挑战台场景中完成快速知识问答：包含真实内容、可操作控件、清晰状态反馈和跨尺寸布局。
启用 JavaScript 后可编辑、运行和保存此案例。固定源码如下：
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<header class="mast"><div><span class="eyebrow">art-deco / 快速知识问答 / INTERMEDIATE</span><h1>课堂挑战台快速知识问答</h1><p class="intro">在课堂挑战台场景中完成快速知识问答：包含真实内容、可操作控件、清晰状态反馈和跨尺寸布局。</p></div><span class="scenario">课堂挑战台</span></header>
<div class="composition-index"><section class="demo" aria-label="课堂挑战台快速知识问答交互区域"><section id="evidenceShell" class="evidence-shell" data-board-mode="scan"><header class="evidence-head"><div><span class="eyebrow">课堂挑战台 / EVIDENCE BOARD</span><h2>快速知识问答观测面板</h2><p>把主案例放入证据看板，用单独的观察卡片、日志和模式切换记录当前结果。</p></div><div class="evidence-tools"><div class="row"><button class="action primary" type="button" data-board-mode="scan">扫描</button><button class="action" type="button" data-board-mode="proof">核验</button><button class="action" type="button" data-board-mode="handoff">交接</button></div><output id="evidenceStatus">等待采样</output></div></header><div class="evidence-body"><section class="evidence-stage"><div class="evidence-ribbon"><button type="button" data-evidence-card="0" aria-pressed="true"><span>01</span><strong>课堂挑战台提醒</strong><small>检查状态变化是否可见</small></button><button type="button" data-evidence-card="1" aria-pressed="false"><span>02</span><strong>课堂挑战台收藏</strong><small>确认键盘与点击入口一致</small></button><button type="button" data-evidence-card="2" aria-pressed="false"><span>03</span><strong>课堂挑战台概览</strong><small>观察布局在窄屏下是否回退</small></button><button type="button" data-evidence-card="3" aria-pressed="false"><span>04</span><strong>课堂挑战台计划</strong><small>记录当前复核结论</small></button></div><div id="evidenceCoreShell" class="evidence-core-shell"><div class="workflow-compare"><form id="workflowCompareControls" class="compare-controls"><fieldset><legend>对照通道</legend><label><input type="radio" name="workflowChannel" value="A" checked>A · 课堂挑战台开始回合</label><label><input type="radio" name="workflowChannel" value="B">B · 课堂挑战台中途调整</label></fieldset><label>完成进度权重<input id="workflowCompareWeight" type="range" min="10" max="90" value="50"><output id="workflowCompareWeightValue">50 %</output></label><label><input id="workflowCompareFreeze" type="checkbox">冻结当前版本</label><button id="workflowCompareCapture" class="action primary" type="button">采样并记录结果</button><ol id="workflowCompareShelf" aria-label="版本采样记录"></ol></form><section class="compare-stage"><header><span class="eyebrow">课堂挑战台 COMPARE</span><h2>课堂挑战台双版本对照</h2><output id="workflowCompareLive">A 版本等待采样</output></header><section id="workflowCore" class="workflow-core compare-core" data-compare-channel="A" style="--compare-split:50%"><!-- 11DZ_CORE_START:mini-apps-games-quick-quiz --><div class="mini quiz"><span class="eyebrow">QUICK QUIZ</span><h2>课堂挑战台小测验</h2><p>响应式界面最重要的基础是什么？</p><div class="stack"><button class="quiz-answer" type="button" data-correct="true" data-core-bridge="mini-apps-games-quick-quiz">结构清晰</button><button class="quiz-answer" type="button" data-correct="false">颜色更多</button><button class="quiz-answer" type="button" data-correct="false">动画更快</button></div><div id="quizProgress" class="meter" role="progressbar" aria-label="答题正确度" aria-valuemin="0" aria-valuemax="100" aria-valuenow="0"><i id="quizMeter"></i></div></div><!-- 11DZ_CORE_END --></section></section></div></div></section><aside class="evidence-rail"><label>画布缩放<input id="evidenceZoom" type="range" min="88" max="128" value="100"><output id="evidenceZoomValue">100%</output></label><label>当前取样<select id="evidenceStep"><option value="0">课堂挑战台提醒</option><option value="1">课堂挑战台收藏</option><option value="2">课堂挑战台概览</option><option value="3">课堂挑战台计划</option></select></label><ul id="evidenceChecklist" class="evidence-checklist"><li>课堂挑战台提醒</li><li>课堂挑战台收藏</li><li>课堂挑战台概览</li><li>课堂挑战台计划</li></ul><button id="evidenceCapture" class="action primary" type="button">写入证据</button><ol id="evidenceLog" class="evidence-log"><li>尚未写入证据</li></ol></aside></div></section><p id="status" class="status" role="status" aria-live="polite"></p></section><aside class="index-mark" aria-hidden="true"><strong>05</strong><span>课堂挑战台 FIELD INDEX</span></aside></div>
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