.product-section {
  padding: 2em;
  background-color: #f9f9f9;
  border-radius: 8px;
  font-family: sans-serif;
}

.section-title {
  font-size: 1.8em;
  margin-bottom: 0.5em;
  color: #333;
}

.section-description {
  font-size: 1em;
  color: #555;
  line-height: 1.6;
  margin-bottom: 1.5em;
}

.stamp-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5em 0;
}

.stamp-list li {
  margin-bottom: 1em;
  padding-left: 1.2em;
  position: relative;
}

.stamp-list li::before {
  content: "・";
  position: absolute;
  left: 0;
  color: #555;
}

.bonus-section {
  padding: 1em;
  background-color: #fff4e5;
  border: 1px solid #ffd699;
  border-radius: 6px;
  font-weight: bold;
  color: #d17b00;
}