* {
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: #f6f6f6;
  color: #222;
}

.container {
  max-width: 520px;
  margin: 40px auto;
  background: #fff;
  padding: 24px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  text-align: center;
}

.status {
  margin: 12px 0 18px;
  color: #444;
}

.qr-wrap {
  display: flex;
  justify-content: center;
  min-height: 260px;
}

#qr {
  width: 260px;
  height: 260px;
  display: none;
}

.hint {
  margin-top: 16px;
  color: #666;
  font-size: 14px;
}