:root {
  color: #1f2329;
  background: #f4f6f8;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
}

.cashier-page {
  display: flex;
  min-height: 100vh;
  align-items: flex-start;
  justify-content: center;
  padding: 56px 20px 32px;
}

.cashier-card {
  width: min(100%, 420px);
  padding: 36px 24px 26px;
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 12px 36px rgba(31, 35, 41, .08);
  text-align: center;
}

.wechat-mark {
  display: grid;
  width: 58px;
  height: 58px;
  margin: 0 auto 22px;
  place-items: center;
  border-radius: 50%;
  background: #07c160;
  color: #fff;
  font-size: 30px;
  font-weight: 700;
}

h1 {
  margin: 0;
  font-size: 22px;
  font-weight: 600;
}

.hint {
  min-height: 42px;
  margin: 14px 0 26px;
  color: #8b949e;
  font-size: 14px;
  line-height: 1.6;
}

.spinner {
  width: 28px;
  height: 28px;
  margin: 0 auto 24px;
  border: 3px solid #dff5e7;
  border-top-color: #07c160;
  border-radius: 50%;
  animation: spin .8s linear infinite;
}

button {
  width: 100%;
  height: 46px;
  border: 0;
  border-radius: 9px;
  font-size: 16px;
}

.primary-button { background: #07c160; color: #fff; }
.secondary-button { margin-top: 12px; background: #f2f3f5; color: #4e5969; }
button:disabled { opacity: .55; }

@keyframes spin { to { transform: rotate(360deg); } }