:root {
  --primary: #4F7DF6;
  --primary-dark: #3A63D8;
  --dark: #1E2A3A;
  --bg: #F5F7FB;
  --border: #E4E9F2;
  --text: #2B3648;
  --muted: #8A94A6;
  --ok: #1AAD19;
  --bad: #E64340;
  --warn: #FF9800;
  --wx: #1AAD19;
  --ali: #1677FF;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.mono { font-family: Consolas, Menlo, monospace; font-size: 12px; word-break: break-all; }

/* 顶栏 */
.topbar {
  background: var(--dark);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 52px;
}
.brand { font-size: 16px; font-weight: 600; }
.topnav { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.navlink { color: #C7D0DE; padding: 6px 12px; border-radius: 6px; font-size: 13px; }
.navlink:hover { color: #fff; text-decoration: none; background: rgba(255,255,255,.08); }
.navlink.active { color: #fff; background: var(--primary); }
.topuser { color: #8A94A6; margin: 0 8px 0 12px; font-size: 13px; }

.container { max-width: 1200px; margin: 20px auto; padding: 0 16px; }
.foot { text-align: center; color: var(--muted); font-size: 12px; padding: 16px 0; }

/* 卡片 */
.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 20px;
  margin-bottom: 16px;
}
.card.narrow { max-width: 560px; }
.card-title { font-size: 15px; font-weight: 600; margin-bottom: 14px; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 14px; margin-bottom: 16px; }
.cards.two { grid-template-columns: 1fr 1fr; }
.card.stat .stat-label { color: var(--muted); font-size: 13px; }
.card.stat .stat-num { font-size: 26px; font-weight: 700; margin-top: 6px; color: var(--text); }
.card.stat .stat-sub { color: var(--muted); font-size: 12px; margin-top: 4px; }

/* 表格 */
.tbl { width: 100%; border-collapse: collapse; }
.tbl th, .tbl td { padding: 9px 8px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: middle; }
.tbl th { color: var(--muted); font-weight: 500; font-size: 13px; white-space: nowrap; }
.tbl tr:hover td { background: #FAFBFE; }
.tbl td.empty { text-align: center; color: var(--muted); padding: 24px; }
.tbl td.ops { white-space: nowrap; }
.tbl td.ops .inline { display: inline-block; margin: 2px 4px 2px 0; }

/* 表单 */
.field { margin-bottom: 14px; }
.field label { display: block; color: var(--muted); font-size: 13px; margin-bottom: 6px; }
.field input[type="text"], .field input:not([type]), .field input[type="password"],
.field input[type="number"], .field input[type="file"], select, .filter input, .filter select {
  width: 100%;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  background: #fff;
}
.filter input:focus, .filter select:focus, .field input:focus { border-color: var(--primary); }
.filter { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.filter input, .filter select { width: auto; min-width: 130px; }
.row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.hint { color: var(--muted); font-size: 12px; margin-top: 6px; line-height: 1.5; }
.chk { display: flex; align-items: center; gap: 6px; color: var(--text) !important; }
label.chk input { width: auto; }

/* 按钮 */
.btn {
  display: inline-block;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  padding: 9px 18px;
  border-radius: 8px;
  font-size: 14px;
  cursor: pointer;
  transition: .15s;
}
.btn:hover { border-color: var(--primary); color: var(--primary); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); color: #fff; }
.btn-danger { color: var(--bad); }
.btn-danger:hover { border-color: var(--bad); color: var(--bad); }
.btn-sm { padding: 5px 10px; font-size: 12px; border-radius: 6px; }
.btn-block { width: 100%; }
.btn-outline { margin: 6px 0; }
form.inline { display: inline; }

/* 徽标 */
.badge { display: inline-block; padding: 2px 8px; border-radius: 20px; font-size: 12px; white-space: nowrap; }
.badge-ok { background: #E8F8E9; color: var(--ok); }
.badge-bad { background: #FDECEC; color: var(--bad); }
.badge-warn { background: #FFF4E5; color: var(--warn); }
.badge-gray { background: #EEF1F6; color: var(--muted); }
.badge-wx { background: #E8F8E9; color: var(--wx); }
.badge-ali { background: #E8F0FE; color: var(--ali); }

/* 提示条 */
.alert { padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; font-size: 13px; }
.alert-ok { background: #E8F8E9; color: #157A18; }
.alert-warn { background: #FFF4E5; color: #B26A00; }
.alert-bad { background: #FDECEC; color: var(--bad); }

/* 分页 */
.pager { display: flex; gap: 6px; margin-top: 14px; flex-wrap: wrap; }
.pager a { padding: 5px 10px; border: 1px solid var(--border); border-radius: 6px; color: var(--text); font-size: 13px; }
.pager a:hover { border-color: var(--primary); color: var(--primary); text-decoration: none; }
.pager a.cur { background: var(--primary); border-color: var(--primary); color: #fff; }

/* 页签 */
.tabs { display: flex; gap: 8px; margin-bottom: 14px; }
.tab { padding: 7px 16px; border-radius: 20px; background: #fff; border: 1px solid var(--border); color: var(--text); font-size: 13px; }
.tab.active { background: var(--primary); border-color: var(--primary); color: #fff; }
.tab:hover { text-decoration: none; }

/* 登录注册 */
.auth-wrap { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 20px; }
.auth-card { width: 100%; max-width: 380px; }
.auth-card h3 { margin-bottom: 18px; text-align: center; }
.auth-card .err, p.err { color: var(--bad); font-size: 13px; margin-bottom: 12px; }
.link-line { text-align: center; color: var(--muted); margin-top: 14px; font-size: 13px; }

/* 文档 */
.doc { padding-left: 20px; line-height: 2; }
.doc-title { margin: 16px 0 8px; }
pre.code {
  background: #0F1724;
  color: #D7E0F0;
  padding: 14px;
  border-radius: 8px;
  overflow-x: auto;
  font-size: 12px;
  line-height: 1.7;
  font-family: Consolas, Menlo, monospace;
  margin: 10px 0;
}

/* 收银台 */
.cashier-wrap { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 20px; background: var(--bg); }
.cashier-card { width: 100%; max-width: 420px; text-align: center; padding: 28px 24px; }
.pay-head { margin-bottom: 10px; }
.pay-channel { font-size: 18px; font-weight: 700; }
.pay-head.wx .pay-channel { color: var(--wx); }
.pay-head.ali .pay-channel { color: var(--ali); }
.pay-head.ok .pay-channel { color: var(--ok); }
.pay-tip { color: var(--muted); font-size: 13px; margin-top: 4px; }
.pay-icon {
  width: 56px; height: 56px; border-radius: 50%;
  background: var(--ok); color: #fff; font-size: 30px;
  line-height: 56px; margin: 0 auto 12px; font-weight: 700;
}
.pay-head.gray .pay-icon { background: var(--muted); }
.amount { font-size: 42px; font-weight: 700; color: #E64340; margin: 12px 0 8px; letter-spacing: 1px; }
.qr-box { margin: 14px auto; }
.qr-box img { width: 250px; height: 250px; object-fit: contain; border: 1px solid var(--border); border-radius: 8px; padding: 6px; background: #fff; }
.warn-line { background: #FFF4E5; color: #B26A00; border-radius: 8px; padding: 9px 12px; font-size: 13px; margin: 12px 0; }
.meta { color: var(--muted); font-size: 13px; margin: 6px 0; }
.countdown { margin-top: 14px; font-size: 13px; color: var(--text); }
.countdown b { color: #E64340; }
.poll-state { margin-top: 8px; font-size: 13px; color: var(--muted); }
.poll-state.ok { color: var(--ok); }
.poll-state.bad { color: var(--bad); }

/* 收款码预览 */
.qr-preview { width: 180px; height: 180px; border: 1px solid var(--border); border-radius: 8px; margin-bottom: 12px; display: flex; align-items: center; justify-content: center; color: var(--muted); overflow: hidden; }
.qr-preview img { max-width: 100%; max-height: 100%; }
.upload-form .field input[type="file"] { padding: 7px; margin-bottom: 8px; }

@media (max-width: 640px) {
  .topbar { flex-direction: column; height: auto; padding: 10px 16px; gap: 8px; }
  .container { margin: 12px auto; }
  .cards.two { grid-template-columns: 1fr; }
  .row2 { grid-template-columns: 1fr; }
  .tbl { display: block; overflow-x: auto; }
}