:root {
  --bg: #f5f6f8; --card: #fff; --ink: #1c2733; --muted: #66788c;
  --brand: #0f4c81; --brand-ink: #fff; --line: #e3e8ee;
  --ok: #1a7f4e; --warn: #b7791f; --bad: #b3392f; --chip: #eef3f8;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 15px/1.6 "Segoe UI", "Microsoft JhengHei", "Noto Sans TC", sans-serif;
}
header.top {
  display: flex; align-items: center; gap: 16px;
  background: var(--brand); color: var(--brand-ink); padding: 10px 20px;
}
header.top h1 { font-size: 17px; margin: 0; font-weight: 600; }
header.top .sp { flex: 1; }
header.top button { background: rgba(255,255,255,.15); color: #fff; border: 0; }
nav.tabs { display: flex; gap: 4px; padding: 10px 20px 0; flex-wrap: wrap; }
nav.tabs button {
  background: transparent; border: 0; padding: 8px 14px; border-radius: 8px 8px 0 0;
  color: var(--muted); cursor: pointer; font-size: 15px;
}
nav.tabs button.on { background: var(--card); color: var(--brand); font-weight: 600; box-shadow: 0 -1px 0 var(--line); }
main { padding: 16px 20px 60px; max-width: 1200px; margin: 0 auto; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; margin-bottom: 16px; }
.card h2 { margin: 0 0 10px; font-size: 16px; }
.grid { display: grid; gap: 12px; }
.grid.stats { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.stat { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
.stat .k { color: var(--muted); font-size: 13px; }
.stat .v { font-size: 22px; font-weight: 700; margin-top: 2px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; white-space: nowrap; }
tr:hover td { background: #fafbfc; }
.scroll { overflow-x: auto; }
button, .btn {
  background: var(--brand); color: #fff; border: 0; border-radius: 8px;
  padding: 7px 14px; font-size: 14px; cursor: pointer; font-family: inherit;
}
button.ghost { background: var(--chip); color: var(--brand); }
button.mini { padding: 3px 10px; font-size: 13px; }
button.danger { background: var(--bad); }
button:disabled { opacity: .5; cursor: default; }
input, select, textarea {
  font: inherit; padding: 7px 10px; border: 1px solid var(--line); border-radius: 8px;
  background: #fff; color: var(--ink); width: 100%;
}
label { display: block; font-size: 13px; color: var(--muted); margin: 10px 0 4px; }
form.inline { display: flex; gap: 8px; align-items: end; flex-wrap: wrap; }
form.inline label { margin: 0; }
form.inline > div { min-width: 130px; }
.chip { display: inline-block; background: var(--chip); border-radius: 20px; padding: 1px 10px; font-size: 12.5px; color: var(--muted); }
.chip.ok { color: var(--ok); background: #e5f4ec; }
.chip.warn { color: var(--warn); background: #fbf1de; }
.chip.bad { color: var(--bad); background: #f9e7e5; }
.money { font-variant-numeric: tabular-nums; text-align: right; }
.muted { color: var(--muted); font-size: 13px; }
dialog {
  border: 1px solid var(--line); border-radius: 12px; padding: 20px 22px;
  max-width: 460px; width: calc(100vw - 40px); box-shadow: 0 12px 40px rgba(0,0,0,.18);
}
dialog::backdrop { background: rgba(20,30,40,.4); }
dialog h3 { margin: 0 0 6px; }
dialog .row2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
dialog footer { display: flex; gap: 8px; justify-content: end; margin-top: 16px; }
.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; }
.login-box { width: 340px; }
.login-box h1 { font-size: 20px; text-align: center; }
.toast {
  position: fixed; left: 50%; bottom: 30px; transform: translateX(-50%);
  background: #223140; color: #fff; padding: 10px 18px; border-radius: 10px;
  font-size: 14px; opacity: 0; transition: opacity .25s; pointer-events: none;
  max-width: 80vw; z-index: 50;
}
.toast.show { opacity: 1; }
code.k { background: var(--chip); padding: 1px 7px; border-radius: 6px; font-size: 13px; word-break: break-all; }
.hint { font-size: 13px; color: var(--muted); margin-top: 6px; }
header.top .who { color: #cfe0ef; font-size: 14px; }
.linkrow { display: flex; gap: 18px; align-items: flex-start; flex-wrap: wrap; }
.qrbox { background: #fff; padding: 8px; border: 1px solid var(--line); border-radius: 10px; line-height: 0; }
.payee { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 0 12px; align-items: end; }
.pager { display: flex; gap: 8px; align-items: center; justify-content: flex-end; margin-top: 10px; flex-wrap: wrap; }
.pager .muted { margin-right: auto; }
.rank { font-weight: 700; color: var(--brand); }

/* 手機：夥伴幾乎都用手機看入口，表格必須能滑、頁首不能擠爆 */
@media (max-width: 700px) {
  body { font-size: 14.5px; }
  header.top { flex-wrap: wrap; gap: 8px 10px; padding: 10px 14px; }
  header.top h1 { font-size: 15px; width: 100%; }
  header.top .sp { display: none; }
  header.top .who { width: 100%; order: -1; }
  nav.tabs { padding: 8px 10px 0; gap: 2px; overflow-x: auto; flex-wrap: nowrap; }
  nav.tabs button { padding: 8px 11px; font-size: 14px; white-space: nowrap; }
  main { padding: 12px 10px 50px; }
  .card { padding: 13px 12px; border-radius: 9px; }
  .grid.stats { grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 8px; }
  .stat { padding: 10px 11px; }
  .stat .v { font-size: 18px; }
  table { font-size: 13px; }
  th, td { padding: 6px 6px; }
  dialog { padding: 16px 15px; }
  dialog .row2 { grid-template-columns: 1fr; }
  form.inline > div { min-width: 110px; flex: 1; }
  .qrbox { margin: 0 auto; }
}