.participate {
  border-top: 8px solid var(--subaru-blue);
  border-bottom: 8px solid var(--subaru-blue);
}

.participate h3 {
  font-size: 1.4rem;
}

.participate p {
  font-size: 1rem;
}

.how-to-participate {
  display: flex;
  width: min(1400px, 90vw);
  flex-direction: row;
  flex-wrap: nowrap;
  justify-content: center;
  align-items: stretch;
}

.participate-box {
  display: flex;
  flex-direction: column;
  flex-wrap: nowrap;
  align-items: center;
  gap: 1rem;
  color: var(--subaru-blue);
  text-align: center;
  flex: 1;
}

.participate-box p{
  font-size: 1rem;
}

.how-to-number {
  width: 5rem;
  height: auto;
  padding: 0.6rem;
  background-color: var(--subaru-blue);
  border-radius: 50%;
  aspect-ratio: 1/1;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  flex-wrap: nowrap;
  color: #fff;
}

.how-to-number p {
  font-size: 1.6rem;
}

.icon {
  width: 3rem;
  aspect-ratio: 1/1;
}

.arrow-right {
  width: 3rem;
  aspect-ratio: 1/1;
}

.participate-note{
  color: var(--subaru-blue);
  text-align: center;
  max-width: 90vw;
  font-size: 0.9rem !important;
}

/* Responsive: sp (max-width: 540px) */
@media (max-width: 540px) {
  .how-to-participate {
    flex-direction: column;
    align-items: center;
    gap: 2rem;
  }
  .arrow-right {
    rotate: 90deg;
  }
}