.ad-top-wrap {
  position: relative;
  width: 100%;
  box-sizing: border-box;
  padding-top: 1.1rem;
  margin: 0 auto 1.25rem;
}

.ad-top {
  position: relative;
  width: 100%;
  box-sizing: border-box;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

/* flex 子項的 width 預設為 auto，空內容的 <ins> 會塌縮成 0 寬；
   AdSense 依容器寬度計算響應式尺寸，0 寬即無法填充。
   必須顯式撐滿父層，否則廣告位只會留下一片空白。 */
.ad-top > ins.adsbygoogle {
  width: 100%;
}

.ad-top-wrap::before {
  content: "廣告";
  position: absolute;
  top: 0;
  right: 0;
  z-index: 10;
  color: #000;
  font-size: 12px;
  line-height: 1.3;
  font-weight: 400;
  letter-spacing: 0.08em;
  font-family: serif;
  pointer-events: none;
}