:root {
  --bg: #f6f7f9; --card: #fff; --text: #1d2330; --muted: #6b7280; --line: #e5e7eb;
  --brand: #2563eb; --brand-ink: #fff; --ok: #15803d; --warn: #b45309; --bad: #b91c1c;
  --ok-bg: #dcfce7; --warn-bg: #fef3c7; --bad-bg: #fee2e2; --none-bg: #f3f4f6;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1218; --card: #171b23; --text: #e5e7eb; --muted: #9aa3b2; --line: #2a303b;
    --brand: #3b82f6; --ok: #4ade80; --warn: #fbbf24; --bad: #f87171;
    --ok-bg: #12301f; --warn-bg: #3a2c0c; --bad-bg: #3a1414; --none-bg: #232833;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 14px/1.6 -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 16px; }
.top { background: var(--card); border-bottom: 1px solid var(--line); }
.top-inner { display: flex; align-items: center; gap: 20px; min-height: 56px; flex-wrap: wrap; }
.brand { font-weight: 600; font-size: 16px; color: var(--text); }
nav { display: flex; gap: 14px; flex-wrap: wrap; flex: 1; }
nav a { color: var(--text); }
nav .sep { width: 1px; background: var(--line); }
.logout { display: flex; gap: 8px; align-items: center; margin: 0; }
main { padding: 20px 16px 48px; }
h2 { margin: 8px 0 12px; font-size: 20px; }
h3 { margin: 0 0 12px; font-size: 15px; }
.head-row { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px; margin-bottom: 16px; }
.card.narrow { max-width: 420px; margin: 40px auto; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 16px; }
.grid .card { margin-bottom: 0; }
.grid + .card, .grid + .grid { margin-top: 16px; }
.muted { color: var(--muted); }
.hint { color: var(--muted); font-size: 12px; margin: 4px 0 12px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12.5px; word-break: break-all; }
.pre { white-space: pre-wrap; }
.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { font-weight: 500; color: var(--muted); font-size: 12.5px; white-space: nowrap; }
tbody tr:hover { background: color-mix(in srgb, var(--brand) 4%, transparent); }
label { display: block; margin-bottom: 12px; color: var(--muted); font-size: 13px; }
label.inline { display: inline-flex; gap: 6px; align-items: center; margin-right: 18px; color: var(--text); }
input, select, textarea { display: block; width: 100%; margin-top: 4px; padding: 8px 10px; font: inherit; color: var(--text);
  background: var(--bg); border: 1px solid var(--line); border-radius: 8px; }
input[type=checkbox], input[type=radio] { display: inline-block; width: auto; margin: 0; }
input[type=file] { padding: 6px; margin-bottom: 10px; }
fieldset.row { border: 0; padding: 0; margin: 0 0 12px; }
legend { color: var(--muted); font-size: 13px; margin-bottom: 6px; }
button, .button { display: inline-block; padding: 8px 14px; font: inherit; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--line); background: var(--card); color: var(--text); }
button.primary { background: var(--brand); border-color: var(--brand); color: var(--brand-ink); }
button.danger { color: var(--bad); border-color: var(--bad); }
button.link { border: 0; background: none; color: var(--brand); padding: 0; }
.actions { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-top: 14px; flex-wrap: wrap; }
.inline-form { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; }
.inline-form input { width: auto; margin-top: 4px; }
.filters label { margin: 0; }
.filters input, .filters select { min-width: 150px; }
.tabs { display: flex; gap: 4px; flex-wrap: wrap; margin-bottom: 14px; }
.tabs a { padding: 5px 12px; border-radius: 999px; color: var(--muted); }
.tabs a.on { background: var(--none-bg); color: var(--text); }
.flash { padding: 10px 14px; border-radius: 8px; margin-bottom: 14px; }
.flash.ok { background: var(--ok-bg); color: var(--ok); }
.flash.error { background: var(--bad-bg); color: var(--bad); }
.badge { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px; white-space: nowrap; background: var(--none-bg); color: var(--muted); }
.badge.issued { background: var(--ok-bg); color: var(--ok); }
.badge.pending { background: var(--warn-bg); color: var(--warn); }
.badge.rejected, .badge.voided { background: var(--bad-bg); color: var(--bad); }
.warn-text { color: var(--warn); font-weight: 600; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 16px; }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; }
.stat span { display: block; color: var(--muted); font-size: 12.5px; }
.stat b { font-size: 22px; font-variant-numeric: tabular-nums; }
.stat.warn b { color: var(--warn); }
dl { display: grid; grid-template-columns: 90px 1fr; gap: 6px 12px; margin: 0 0 12px; }
dt { color: var(--muted); }
dd { margin: 0; }
.log { margin: 0; padding-left: 18px; }
[hidden] { display: none !important; }
.table-scroll table { min-width: 680px; }
td { white-space: nowrap; }
td:nth-child(n) { max-width: 360px; overflow: hidden; text-overflow: ellipsis; }
@media (max-width: 640px) {
  .top-inner { padding-top: 8px; padding-bottom: 8px; gap: 8px 16px; }
  nav { order: 3; flex-basis: 100%; }
  .logout { margin-left: auto; }
  main { padding-top: 12px; }
  .card { padding: 14px 12px; }
}

/* 开票须知弹窗 */
dialog.notice { max-width: 560px; width: calc(100% - 32px); border: 1px solid var(--line, #ddd); border-radius: 10px; padding: 20px 24px; }
dialog.notice::backdrop { background: rgba(0, 0, 0, .35); }
dialog.notice h3 { margin-top: 0; }
dialog.notice ol { padding-left: 1.3em; line-height: 1.7; }
.notice-actions { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; margin-top: 12px; }