<div class="panel">
  <div class="section">
    <div class="label">统计</div>
    <div class="stat-grid">
      <div class="stat"><div>计时</div><strong id="timeLabel">00:00</strong></div>
      <div class="stat"><div>步数</div><strong id="stepsLabel">0</strong></div>
      <div class="stat"><div>提示</div><strong id="hintsLabel">3</strong></div>
      <div class="stat"><div>评分</div><strong id="gradeLabel">-</strong></div>
    </div>
  </div>
  <div class="section">
    <div class="label">奖励星级</div>
    <div class="star-wrap" id="starsWrap">
      <span class="star"></span><span class="star"></span><span class="star"></span>
    </div>
  </div>
  <div class="section">
    <div class="label">操作</div>
    <div class="controls">
      <button class="btn" id="undoBtn">撤销</button>
      <button class="btn" id="redoBtn">重做</button>
      <button class="btn warn" id="hintBtn">提示</button>
      <button class="btn good" id="restartBtn">重开</button>
      <button class="btn bad" id="clearBtn">清空</button>
    </div>
  </div>
  <div class="section">
    <div class="label">关卡信息</div>
    <div class="stat">
      <div>网格大小：<span id="sizeLabel">R5</span></div>
      <div>颜色数量：<span id="colorLabel">5</span></div>
      <div>种子：<span id="seedLabel">-</span></div>
    </div>
  </div>
</div>