.y_plan-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  align-items: stretch;
  max-width: 1000px;
  margin: 0 auto;
}

.y_plan-box {
  border: 2px solid #b78999;
  border-radius: 12px;
  padding: 2rem 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: #fff;
  font-family: 'Zen Antique Soft', serif;

}

.y_plan-header .y_plan-title {
  font-size: 1.2rem;
  color: #b78999;
  margin: 0;
  text-align: center;
}

.y_plan-header .y_plan-subtitle {
  font-size: 1.6rem;
  color: #b78999;
  font-weight: bold;
  margin: 0;
  text-align: center;
}

.y_plan-header .y_plan-note {
  font-size: 0.9rem;
  color: #b78999;
  margin-bottom: 0;
  text-align: center;
}

.y_plan-price {
  background-color: #d5b5c1;
  color: #fff;
  padding: 0.5rem;
  margin: 1.2rem auto;
  font-size: 2.5rem;
  font-weight: bold;
  width: 100%;
  box-sizing: border-box;
  text-align: center;
}

.y_plan-price2 {
  background-color: #b78999;
  color: #fff;
  padding: 0.5rem;
  margin: 1.2rem auto;
  font-size: 2.5rem;
  font-weight: bold;
  width: 100%;
  box-sizing: border-box;
  text-align: center;
}

.y_plan-price .yen {
  font-size: 1rem;
  vertical-align: baseline;
  margin-left: 1rem;
}

.y_plan-price2 .yen {
  font-size: 1rem;
  vertical-align: baseline;
  margin-left: 1rem;
}

.y_plan-details {
  font-size: 0.9rem;
  text-align: center;
  line-height: 1;
  flex-grow: 1;
  padding: 0 1rem;
}

.y_plan-details strong {
  display: block;
  font-size: 1.3rem;
  color: #b78999;
  margin-top: 0;
}

.y_plan-details .note {
  font-size: 0.8rem;
  color: #b78999;
}