.ifb-wrap {
  max-width: 1100px;
  margin: 24px auto;
  padding: 0 16px;
  box-sizing: border-box;
}

.ifb-book {
  position: relative;
  width: 100%;
  min-height: 280px;
  background: #f1f1f1;
  border-radius: 6px;
  overflow: hidden;
  outline: none;
}

.ifb-status {
  padding: 90px 16px;
  text-align: center;
  color: #555;
  font-size: 16px;
}

.ifb-page {
  background: #fff;
  overflow: hidden;
}

.ifb-page canvas {
  display: block;
  width: 100%;
  height: auto;
}

.ifb-controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-top: 12px;
  font-size: 15px;
}

.ifb-controls button {
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 50%;
  background: #1f3a8a;
  color: #fff;
  font-size: 26px;
  line-height: 1;
  cursor: pointer;
}

.ifb-controls button:hover {
  background: #2c4fbf;
}

.ifb-count {
  min-width: 70px;
  text-align: center;
}

.ifb-download {
  font-size: 14px;
  text-decoration: underline;
}