html, body {
  margin: 0;
  overflow: hidden;
}

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #eaf1ff;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.ctaband {
  box-sizing: border-box;
  width: clamp(240px, 82vw, 340px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 24px 16px;
  border-radius: 16px;
  background: #7386ba;
  text-align: center;
  box-shadow: 0 16px 30px rgba(115, 134, 186, 0.32);
}

.ctaband__title {
  margin: 0;
  color: #ffffff;
  font-weight: 700;
  font-size: clamp(16px, 4.4vw, 21px);
  line-height: 1.3;
  font-family: inherit;
}

.ctaband__desc {
  margin: 0;
  color: rgba(255, 255, 255, 0.82);
  font-weight: 500;
  font-size: clamp(11px, 2.8vw, 13px);
  line-height: 1.4;
  font-family: inherit;
}

.ctaband__btn {
  margin-top: 4px;
  border: 0;
  border-radius: 999px;
  background: #ffffff;
  color: #7386ba;
  padding: 8px 24px;
  font-weight: 700;
  font-size: clamp(12px, 2.8vw, 14px);
  line-height: 1;
  font-family: inherit;
  box-shadow: 0 6px 14px rgba(23, 20, 26, 0.18);
  animation: btnLift 2s ease-out infinite;
}

.ctaband__btn:focus-visible {
  outline: 3px solid #ffffff;
  outline-offset: 2px;
}

@keyframes btnLift {
  0%, 100% {
    transform: translateY(0);
    box-shadow: 0 6px 14px rgba(23, 20, 26, 0.18);
  }
  50% {
    transform: translateY(-4px);
    box-shadow: 0 12px 22px rgba(23, 20, 26, 0.24);
  }
}
@media (max-width: 340px), (max-height: 220px) {
  .ctaband {
    padding: 16px 12px;
    gap: 4px;
  }
  .ctaband__desc {
    display: none;
  }
  .ctaband__btn {
    padding: 4px 16px;
    margin-top: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  .ctaband__btn {
    animation: none !important;
    transform: none;
  }
}