.usage-section {
  background: #fff;
  padding: 20px 20px;
  text-align: center;
}

.usage-section .section-title {
  font-size: 32px;
  color: #333;
  margin-bottom: 50px;
}

.usage-steps {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.step-box {
  background: #f8f8f8;
  border-radius: 12px;
  padding: 30px 20px;
  width: 280px;
  position: relative;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease;
}

.step-box:hover {
  transform: translateY(-6px);
}

.step-number {
  background: #ff5e5e;
  color: #fff;
  width: 48px;
  height: 48px;
  line-height: 48px;
  font-size: 20px;
  font-weight: bold;
  border-radius: 50%;
  margin: 0 auto 20px;
}

.step-box h3 {
  font-size: 20px;
  margin-bottom: 10px;
  color: #222;
}

.step-box p {
  font-size: 14px;
  color: #555;
  line-height: 1.6;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
  .usage-steps {
    flex-direction: column;
    align-items: center;
  }

  .step-box {
    width: 90%;
  }
}