.img-hover-popup {
  position: fixed;
  z-index: 1080;
  background: #fff;
  padding: 8px;
  border: 1px solid rgba(0,0,0,.08);
  border-radius: 8px;
  box-shadow: 0 8px 30px rgba(0,0,0,.18);
  pointer-events: none;
  opacity: 0;
  transition: opacity .12s ease;
}

  .img-hover-popup img {
    display: block;
    max-width: 90vw;
    object-fit: contain;
    background: #fff; /* กันโปร่งใสทะลุ */
    border-radius: 4px;
  }