.protocol-steps {
  --protocol-photo-height: clamp(440px, 68vh, 670px);
  --protocol-sticky-top: calc(var(--header) + 36px);
}

.protocol-steps__intro {
  max-width: 800px;
  margin-bottom: 80px;
}

.protocol-steps__intro .lead {
  max-width: 650px;
  margin-top: 28px;
}

.protocol-steps__chapter {
  min-width: 0;
}

.protocol-steps__visual {
  position: relative;
  min-width: 0;
}

.protocol-steps__frame {
  position: relative;
  isolation: isolate;
  height: 420px;
}

.protocol-steps__frame::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  background: var(--caramel);
  transform: translate(12px, 12px);
}

.protocol-steps__image {
  width: 100%;
  height: 100%;
  border: 12px solid var(--ivory);
}

.protocol-steps__image picture {
  display: block;
  width: 100%;
  height: 100%;
}

.protocol-steps__copy {
  min-width: 0;
  padding: 28px 0 64px;
}

.protocol-steps__number,
.protocol-steps__progress {
  font-family: var(--body);
  font-size: 11px;
  font-weight: 500;
  line-height: 1.5;
  letter-spacing: .14em;
  color: #785a39;
  font-variant-numeric: tabular-nums;
}

.protocol-steps__copy h3 {
  margin: 16px 0;
  font-family: var(--heading);
  font-size: clamp(30px, 4vw, 38px);
}

.protocol-steps__text {
  font-size: 16px;
  line-height: 1.7;
}

.protocol-steps__copy .protocol-steps__detail {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.7;
}

.protocol-steps__divider {
  margin-inline: 12px;
  opacity: .6;
}

@media (min-width: 768px) and (max-width: 991px) {
  .protocol-steps__frame {
    height: 580px;
  }
}

@media (min-width: 992px) {
  .protocol-steps__intro {
    width: 70%;
  }

  .protocol-steps__chapters {
    display: grid;
    grid-template-columns: 50% 40%;
    grid-template-rows: repeat(var(--protocol-count), auto);
    column-gap: 10%;
  }

  .protocol-steps__chapter {
    display: contents;
  }

  .protocol-steps__visual {
    grid-column: 1;
    grid-row: var(--protocol-index);
    align-self: center;
    justify-self: start;
    width: min(100%, calc(var(--protocol-photo-height) * .8));
    height: var(--protocol-photo-height);
  }

  .protocol-steps__frame {
    height: auto;
    aspect-ratio: 4 / 5;
    transform: rotate(-3deg);
  }

  .protocol-steps__frame::before {
    transform: translate(18px, 18px);
  }

  .protocol-steps__copy {
    grid-column: 2;
    grid-row: var(--protocol-index);
    min-height: 70vh;
    padding-block: 60px;
  }

  .protocol-steps__copy h3 {
    font-size: 38px;
  }

  .protocol-steps.is-enhanced .protocol-steps__visual {
    position: sticky;
    top: var(--protocol-sticky-top);
    grid-row: 1 / -1;
    align-self: start;
    opacity: 0;
    visibility: hidden;
    transform: translateY(18px);
    pointer-events: none;
    transition: opacity 500ms var(--ease), transform 500ms var(--ease), visibility 0s 500ms;
  }

  .protocol-steps.is-enhanced .protocol-steps__visual.is-active {
    z-index: 1;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition-delay: 0s;
  }

  .protocol-steps__progress {
    position: sticky;
    top: calc(var(--protocol-sticky-top) + var(--protocol-photo-height) + 38px);
    grid-column: 1;
    grid-row: 1 / -1;
    align-self: start;
    justify-self: start;
    z-index: 2;
    margin: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .protocol-steps.is-enhanced .protocol-steps__visual {
    transform: none;
    transition: none;
  }
}