<div class="card-26">
  <div class="card-26__page">
    <p class="card-26__page-text">Hidden content revealed as you open the book.</p>
    <span class="card-26__page-cta">Read now &rarr;</span>
  </div>
  <div class="card-26__cover">
    <span class="card-26__tag">Preview</span>
    <h4 class="card-26__title">Book Open</h4>
    <p class="card-26__body">Cover folds open like a book page.</p>
  </div>
</div>

.card-26__tag {
  font-family: monospace;
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 20px;
  background: rgba(124, 108, 255, 0.15);
  color: #7c6cff;
  border: 1px solid rgba(124, 108, 255, 0.3);
  display: inline-block;
  margin-bottom: 10px;
}
.card-26__title {
  font-size: 17px;
  font-weight: 700;
  color: #f0eeff;
  margin-bottom: 6px;
}
.card-26__body {
  font-size: 13px;
  color: #b8b6d4;
  line-height: 1.6;
}
.card-26 {
  /* Both children (__page, __cover) are absolutely positioned so they
     don't contribute to the parent's intrinsic width. Use a fixed
     280px width here instead of 100%/max-width so the card has a
     predictable size in any flex container (stage, playground iframe). */
  width: 280px;
  max-width: 100%;
  height: 160px;
  border-radius: 14px;
  position: relative;
  cursor: pointer;
  box-shadow: -4px 0 16px rgba(0, 0, 0, 0.4);
}
.card-26__page {
  position: absolute;
  inset: 0;
  border-radius: 14px;
  padding: 22px;
  background: linear-gradient(135deg, #1a1228, #111118);
  border: 1px solid rgba(124, 108, 255, 0.25);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
}
.card-26__page-text {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.5;
}
.card-26__page-cta {
  font-size: 12px;
  color: #7c6cff;
  font-weight: 600;
}
.card-26__cover {
  position: absolute;
  inset: 0;
  border-radius: 14px;
  padding: 22px;
  background: #17171f;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transform-origin: left center;
  transform-style: preserve-3d;
  transition:
    transform 0.62s cubic-bezier(0.23, 1, 0.32, 1),
    box-shadow 0.62s;
  z-index: 2;
  box-shadow: inset -6px 0 18px rgba(0, 0, 0, 0.3);
}
.card-26:hover .card-26__cover {
  transform: perspective(900px) rotateY(-62deg);
  box-shadow:
    inset -6px 0 18px rgba(0, 0, 0, 0.55),
    6px 0 22px rgba(0, 0, 0, 0.45);
}