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

.stage {
  box-sizing: border-box;
  min-height: 100vh;
  display: grid;
  place-items: center;
  margin: 0;
  background: #fbf3e4;
  font-family: -apple-system, "Segoe UI", "Noto Sans KR", sans-serif;
  padding: clamp(8px, 4vw, 24px);
}

.bcol {
  box-sizing: border-box;
  width: clamp(232px, 78vw, 304px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 20px 16px calc(8px + 20px);
  border-radius: 4px 4px 0 0;
  background: #bb7f74;
  transform: rotate(-1.5deg);
  mask: radial-gradient(circle 8px at 50% 0, #000 98%, rgba(0, 0, 0, 0) 100%) 0 100%/16px 8px repeat-x, linear-gradient(#000 0 0) 0 0/100% calc(100% - 8px) no-repeat;
}

.bcol__lead {
  margin: 0;
  color: #ffffff;
  font-family: Georgia, "Nanum Myeongjo", "Times New Roman", serif;
  font-weight: 700;
  font-size: clamp(16px, 4.2vw, 21px);
  line-height: 1.2;
}

.bcol__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 0;
  border-radius: 999px;
  background: #d1c8a3;
  color: #241d2e;
  padding: 12px 20px;
  font-family: inherit;
  font-weight: 700;
  font-size: clamp(12px, 3vw, 14px);
  line-height: 1;
  box-shadow: 0 8px 0 rgba(36, 29, 46, 0.35);
  animation-name: stampPush;
  animation-duration: 2s;
  animation-timing-function: cubic-bezier(0.2, 0.8, 0.2, 1);
  animation-iteration-count: infinite;
}

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

.bcol__arrow {
  font-size: 16px;
  line-height: 1;
}

@keyframes stampPush {
  0%, 100% {
    transform: translateY(-6px) rotate(-2deg);
    box-shadow: 0 14px 0 rgba(36, 29, 46, 0.35);
  }
  50% {
    transform: translateY(0) rotate(1.5deg);
    box-shadow: 0 2px 0 rgba(36, 29, 46, 0.35);
  }
}
@media (max-width: 360px), (max-height: 230px) {
  .bcol {
    width: 224px;
    padding: 12px 12px calc(8px + 12px);
    gap: 8px;
  }
  .bcol__lead {
    font-size: 14px;
  }
  .bcol__btn {
    padding: 8px 16px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .bcol__btn {
    animation: none !important;
    transform: rotate(-2deg);
  }
}