/* 確認画面オーバーレイ */
#confirmOverlay {
  display: none;               /* 初期状態は非表示 */
  position: fixed;
  inset: 0;                    /* top/right/bottom/left: 0; と同じ */
  background: rgba(0, 0, 0, 0.6);
  z-index: 9999;
}

#confirmInner {
  position: relative;
  width: 90%;
  max-width: 900px;
  height: 80%;
  margin: 5% auto;
  background: #fff;
  border-radius: 4px;
  overflow: hidden;
  box-shadow: 0 0 20px rgba(0,0,0,0.4);
}

#confirm_frame {
  width: 100%;
  height: 100%;
  border: none;
}

.confirm-close {
  position: absolute;
  top: 8px;
  right: 8px;
  z-index: 10;
  background: #333;
  color: #fff;
  border: none;
  padding: 4px 10px;
  cursor: pointer;
  font-size: 14px;
}