:root {
  --primary: #0f6e56;
  --primary-light: #e1f5ee;
  --danger: #a32d2d;
  --bg: #f5f7f6;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --border: #e5e7eb;
}
* { box-sizing: border-box; margin: 0; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  background: var(--bg); color: var(--text);
}
.topbar {
  display: flex; justify-content: space-between; align-items: center;
  background: var(--card); border-bottom: 1px solid var(--border);
  padding: 12px 24px;
}
.brand { font-weight: bold; color: var(--primary); text-decoration: none; font-size: 16px; }
.topbar nav a { margin-left: 16px; color: var(--text); text-decoration: none; font-size: 14px; }
.topbar nav a:hover { color: var(--primary); }
.muted { color: var(--muted); font-size: 13px; }
main { max-width: 860px; margin: 24px auto; padding: 0 16px; }
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; padding: 24px; margin-bottom: 16px;
}
.card h2 { font-size: 16px; margin-bottom: 16px; }
.flash {
  background: var(--primary-light); color: var(--primary);
  border-radius: 8px; padding: 10px 14px; margin-bottom: 12px; font-size: 14px;
}
label { display: block; font-size: 13px; color: var(--muted); margin: 12px 0 4px; }
input[type=text], input[type=password], input[type=number] {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border);
  border-radius: 8px; font-size: 14px;
}
input:focus { outline: none; border-color: var(--primary); }
.btn {
  display: inline-block; margin-top: 16px; padding: 10px 22px;
  background: var(--primary); color: #fff; border: none; border-radius: 8px;
  font-size: 14px; cursor: pointer; text-decoration: none;
}
.btn:hover { filter: brightness(1.08); }
.btn.secondary { background: #6b7280; }
.btn.danger { background: var(--danger); }
.stats { display: flex; gap: 16px; flex-wrap: wrap; }
.stat { flex: 1; min-width: 150px; text-align: center; padding: 18px 8px; }
.stat .num { font-size: 22px; font-weight: bold; color: var(--primary); }
.stat .lbl { font-size: 13px; color: var(--muted); margin-top: 4px; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 9px 10px; border-bottom: 1px solid var(--border); text-align: left; }
th { color: var(--muted); font-weight: normal; }
.tag { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 12px; }
.tag.ok { background: var(--primary-light); color: var(--primary); }
.tag.wait { background: #faeeda; color: #854f0b; }
.tag.bad { background: #fcebeb; color: var(--danger); }
.qr-box { text-align: center; }
.qr-box img { width: 220px; height: 220px; border: 1px solid var(--border); border-radius: 8px; padding: 8px; background: #fff; }
.center { text-align: center; }
.amount-input { font-size: 26px; text-align: center; }
.hero { text-align: center; padding: 48px 16px; }
.hero h1 { font-size: 22px; margin-bottom: 12px; }
.hero p { color: var(--muted); margin-bottom: 24px; }
.inline-form { display: flex; gap: 8px; align-items: end; flex-wrap: wrap; }
.inline-form > div { flex: 1; min-width: 120px; }
.small { font-size: 12px; color: var(--muted); }

/* ---------- 付款页（顾客扫码后所见） ---------- */
.pay-page h2 { font-size: 28px; margin: 8px 0 4px; }
.pay-page .pay-tip { font-size: 17px; margin-bottom: 20px; }
.pay-page .amount-input {
  font-size: 44px; font-weight: bold; text-align: center;
  padding: 14px 12px; letter-spacing: 2px;
}
.pay-page .btn { font-size: 20px; padding: 14px 22px; margin-top: 20px; }
.pay-page .small { font-size: 14px; margin-top: 20px; }