.youth-panel[data-panel="library"] {
  width: min(1498px, calc(100vw - 48px));
  margin-left: 50%;
  transform: translateX(-50%);
}

.offlinebook-wrap {
  position: relative;
}

.offlinebook-back {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  min-height: 44px;
  padding: 10px 16px;
  border: 1px solid rgba(255, 255, 255, .45);
  border-radius: 8px;
  color: #fff;
  background: rgba(18, 18, 18, .82);
  font: 700 15px var(--sans);
  cursor: pointer;
}

.offlinebook-back:hover,
.offlinebook-back:focus-visible {
  background: var(--teal);
}

.offlinebook-back:focus-visible {
  outline: 3px solid rgba(255, 255, 255, .8);
  outline-offset: 3px;
}

.offlinebook-frame {
  display: block;
  width: 100%;
  min-height: 720px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--paper);
  box-shadow: 0 10px 24px rgba(62, 50, 42, .1);
}

.offlinebook-frame:focus-visible {
  outline: 3px solid rgba(59, 124, 117, .45);
  outline-offset: 3px;
}

body.youth-reading .youth-main {
  width: 100%;
  min-height: 0;
  padding: 0;
}

body.youth-reading .youth-panel[data-panel="library"] {
  width: 100%;
  margin-left: 0;
  transform: none;
}

body.youth-reading .offlinebook-frame {
  min-height: 0;
  height: calc(100dvh - 64px) !important;
  border: 0;
  border-radius: 0;
}

body.youth-reading .youth-footer {
  display: none;
}

@media (max-width: 760px) {
  .youth-panel[data-panel="library"] {
    width: auto;
    margin-left: 0;
    transform: none;
  }

  .offlinebook-frame {
    min-height: 620px;
    border-radius: 10px;
  }

  .offlinebook-back {
    top: 10px;
    left: 10px;
  }
}