#banner-modal-bg {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(10,10,30,0.32);
  z-index: 2147483647;
  display: flex;
  justify-content: center;
  align-items: center;
}
#banner-modal {
  background: #fff;
  border-radius: 16px;
  box-shadow: 0 8px 32px 0 rgba(0,0,0,0.18);
  padding: 0;
  max-width: 98vw;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
}
#banner-modal img {
  width: 100%;
  height: auto;
  max-width: 420px;
  max-height: 60vh;
  object-fit: contain;
  display: block;
}
#banner-modal-close {
  position: absolute;
  top: 12px;
  right: 18px;
  background: none;
  border: none;
  font-size: 2rem;
  color: #888;
  cursor: pointer;
  z-index: 2;
}
@media (max-width: 600px) {
  #banner-modal img {
    max-width: 96vw;
    max-height: 40vh;
  }
}