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

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

.bf {
  display: grid;
  gap: 16px;
  justify-items: center;
}

.bf__row {
  display: flex;
  gap: 12px;
  padding: 32px;
  flex-wrap: wrap;
  justify-content: center;
}

.bf__btn {
  border: 0;
  cursor: pointer;
  padding: 12px 20px;
  border-radius: 12px;
  background: #0a4fe8;
  color: #fff7e6;
  font-size: 14px;
  font-weight: 700;
  will-change: filter;
}

.bf__btn:focus-visible {
  outline: 2px solid #17141a;
  outline-offset: 3px;
}

@media (max-width: 340px) {
  .bf__row {
    padding: 16px;
    gap: 8px;
  }
  .bf__btn {
    padding: 8px 12px;
    font-size: 12px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .bf__btn {
    transition: none;
  }
}