body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', 'Noto Sans KR', sans-serif;
  background: #ffffff;
  color: #111;
}

.container {
  max-width: 520px;
  margin: 0 auto;
  padding: 48px 20px;
  text-align: center;
}

h1 {
  font-size: 26px;
  margin-bottom: 32px;
}

.code-box {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  border: 2px solid #000;
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 24px;
}

#refCode {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 1px;
}

button {
  padding: 8px 14px;
  font-size: 14px;
  cursor: pointer;
  border: none;
  background: #000;
  color: #fff;
  border-radius: 4px;
}

.desc {
  font-size: 15px;
  line-height: 1.6;
  margin-bottom: 28px;
}

.cta {
  display: inline-block;
  padding: 14px 24px;
  background: #000;
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
  font-size: 15px;
}

.note {
  margin-top: 32px;
  font-size: 12px;
  color: #666;
}