/* ── CTAボタン（グローアニメーション） ── */
.cta-btn {
  display: block;
  width: 90%;
  max-width: 480px;
  margin: 0 auto;
  padding: 20px 24px;
  background: linear-gradient(160deg, #e80000, #b80000);
  color: #fff;
  font-size: clamp(18px, 5vw, 24px);
  font-weight: 700;
  text-align: center;
  line-height: 1.5;
  text-decoration: none;
  border-radius: 14px;
  border: none;
  cursor: pointer;

  /* グローアニメーション */
  animation: cta-glow 1.8s ease-in-out infinite;
}

.cta-btn .cta-brand {
  color: #FFD700;
}

.cta-btn .cta-price {
  display: block;
  font-size: clamp(14px, 4vw, 18px);
  font-weight: 800;
  color: #FFD700;
  background: rgba(0, 0, 0, 0.25);
  border-radius: 20px;
  padding: 4px 14px;
  margin: 0 auto 8px;
  width: fit-content;
  letter-spacing: 0.02em;
}

@keyframes cta-glow {
  0%,100% {
    box-shadow: 0 0 10px 3px rgba(255, 60, 60, 0.45);
  }
  50% {
    box-shadow: 0 0 28px 10px rgba(255, 60, 60, 0.8);
  }
}

.cta-btn:hover {
  opacity: 0.92;
}

.cta-btn:active {
  transform: scale(0.98);
}