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);
}

.cn {
  width: 100%;
  max-width: 300px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.cn__field {
  flex: 1;
  display: block;
}

.cn__input {
  width: 100%;
  box-sizing: border-box;
  padding: 12px 16px;
  border-radius: 12px;
  border: 0;
  background: #17141a;
  color: #fff7e6;
  font-family: "SFMono-Regular", Consolas, monospace;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.04em;
}
.cn__input:focus {
  outline: 2px solid #17141a;
  outline-offset: 2px;
}

.cn__shapeBox {
  display: grid;
  justify-items: center;
  gap: 4px;
  width: 68px;
}

.cn__poly {
  fill: #0a4fe8;
}

.cn__tag {
  font-weight: 700;
  font-size: 10px;
  color: rgba(23, 20, 26, 0.72);
  white-space: nowrap;
}

@media (max-width: 340px) {
  .cn {
    gap: 8px;
  }
  .cn__input {
    padding: 8px 12px;
    font-size: 13px;
  }
  .cn__shapeBox {
    width: 56px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .cn__poly {
    transition: none;
  }
}