body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans KR", Arial, sans-serif;
  background: #ffffff;
  color: #333;
}

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 20px;
  text-align: center;
}

h1 {
  color: #5f0080;
  margin-bottom: 10px;
}

.subtitle {
  color: #777;
  margin-bottom: 30px;
}

.card {
  border: 1px solid #eee;
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
  background: #faf7fb;
}

.code-box {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  margin-top: 12px;
}

#refcode {
  font-size: 1.4rem;
  font-weight: bold;
  color: #5f0080;
}

button {
  background: #5f0080;
  color: #fff;
  border: none;
  border-radius: 6px;
  padding: 8px 14px;
  cursor: pointer;
}

button:hover {
  opacity: 0.9;
}

.note {
  font-size: 0.85rem;
  color: #999;
  margin-top: 8px;
}

.btn {
  display: inline-block;
  margin-top: 10px;
  background: #5f0080;
  color: #fff;
  padding: 12px 20px;
  border-radius: 8px;
  text-decoration: none;
}

.info {
  text-align: left;
  margin: 30px 0;
}

.info h2 {
  color: #5f0080;
}

.adsense {
  margin: 40px 0;
}

footer {
  font-size: 0.8rem;
  color: #888;
  margin-top: 40px;
}