:root {
  --brand: #1677ff;
  --brand-dark: #0958d9;
  --alipay: #1677ff;
  --wechat: #07c160;
  --bg: #f5f6fa;
  --card: #ffffff;
  --text: #1f2329;
  --muted: #8a9099;
  --border: #e5e6eb;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.home-page,
.scan-page {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.pay-card {
  width: 100%;
  max-width: 380px;
  background: var(--card);
  border-radius: 16px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
  padding: 32px 28px;
  text-align: center;
}

.pay-card__header { margin-bottom: 16px; }

.pay-card__title {
  font-size: 20px;
  font-weight: 600;
  margin: 0 0 8px;
}

.pay-card__lead {
  font-size: 16px;
  margin: 8px 0 20px;
  color: var(--text);
}
.pay-card__lead strong { color: var(--brand-dark); }

.pay-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 13px;
  color: #fff;
  margin-bottom: 12px;
}
.badge-alipay { background: var(--alipay); }
.badge-wechat { background: var(--wechat); }

.pay-amount {
  background: #f7f8fa;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  margin: 16px 0;
}
.pay-amount__label { display: block; color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.pay-amount__value { font-size: 32px; font-weight: 700; }

.pay-card__desc { color: var(--muted); font-size: 14px; }
.pay-card__foot { color: var(--muted); font-size: 12px; margin-top: 20px; }

.pay-actions { margin-top: 20px; display: flex; flex-direction: column; gap: 12px; }
.pay-actions__form { margin: 0; }

.btn {
  display: inline-block;
  width: 100%;
  border: none;
  border-radius: 10px;
  padding: 13px 16px;
  font-size: 16px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-ghost { background: #fff; color: var(--text); border: 1px solid var(--border); }
.btn-ghost:hover { background: #f7f8fa; }
.btn-block { display: block; }

.pay-status {
  font-size: 14px;
  font-weight: 600;
  padding: 8px 0;
  border-radius: 8px;
  margin-bottom: 8px;
}
.pay-status--ok { background: #e8f7ef; color: #07c160; }

.endpoint-list {
  text-align: left;
  font-size: 13px;
  color: var(--muted);
  padding-left: 18px;
  line-height: 2;
}
.endpoint-list code { color: var(--brand-dark); background: #f0f4ff; padding: 2px 6px; border-radius: 4px; }