.collage-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}
.collage-img {
  position: absolute;
  width: 100px;
  height: 100px;
  object-fit: cover;
  border-radius: 12px;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.18);
  opacity: 0.82;
  transition: opacity 0.3s;
  will-change: transform;
}

@media (max-width: 700px) {
  .collage-bg {
    position: absolute;
    inset: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 0;
  }
  .collage-img {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    opacity: 0.7;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
  }
}

@media (max-width: 480px) {
  .collage-img {
    width: 32px;
    height: 32px;
    border-radius: 6px;
    opacity: 0.6;
  }
}