.portrait {
  width: min(100%, 420px);
  min-height: 0;
  align-self: center;
  justify-self: center;
}

.portrait img {
  position: static;
  display: block;
  width: 100%;
  height: auto;
}

.portrait img.portrait-alternate {
  display: none;
}

@media (min-width: 721px) and (hover: hover) and (pointer: fine) {
  .portrait img {
    transition: opacity 3s ease;
  }

  .portrait img.portrait-alternate {
    display: block;
    position: absolute;
    inset: 0;
    height: 100%;
    object-fit: cover;
    opacity: 0;
  }

  .portrait.show-alternate img:first-child {
    opacity: 0;
  }

  .portrait.show-alternate img.portrait-alternate {
    opacity: 1;
  }
}

@media (min-width: 721px) and (hover: hover) and (pointer: fine) and (prefers-reduced-motion: no-preference) {
  .portrait img {
    transition: opacity 3s ease, transform 550ms ease;
    transform-origin: 56% 37%;
  }

  .portrait img.portrait-alternate {
    transform-origin: 42% 34%;
  }

  .portrait.portrait-zoom img {
    transform: scale(2.4);
  }
}

@media (prefers-reduced-motion: reduce) {
  .portrait img {
    transition: none;
  }
}