:root {
  --bg: #ffffff;
  --text: #1a1a1a;
  --muted: #5a5a5a;
  --line: #c8c8c8;
  --line-strong: #333333;
  --fill: #f5f5f5;
  --danger: #8a1f1f;
  --focus: #111111;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
  --font-ui: "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-doc: "Songti SC", "STSong", "SimSun", "Noto Serif SC", serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.5;
}

body {
  min-height: 100vh;
}

a {
  color: inherit;
}

img {
  max-width: 100%;
  display: block;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -40px;
  background: #111;
  color: #fff;
  padding: 6px 10px;
  z-index: 20;
}

.skip-link:focus {
  top: 12px;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--line);
  padding: 14px 20px;
}

.app-header h1 {
  margin: 0;
  font-size: 18px;
  font-weight: 650;
  letter-spacing: 0.04em;
}

.app-nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.app-nav a {
  text-decoration: none;
  border: 1px solid transparent;
  padding: 6px 10px;
}

.app-nav a[aria-current="page"] {
  border-color: var(--line-strong);
  background: var(--fill);
}

.app-nav a:hover {
  border-color: var(--line);
}

.account-bar {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 0 4px 8px;
  font-size: 12px;
  color: var(--muted);
}

.btn-small {
  min-height: 30px;
  padding: 3px 8px;
  font-size: 12px;
}

.auth-page {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 20px;
  background: linear-gradient(135deg, #f5f5f5 0%, #fff 58%);
}

.auth-card {
  width: min(100%, 420px);
  padding: 34px;
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow);
  background: #fff;
}

.auth-card h1,
.auth-card h2 {
  margin: 0;
}

.auth-kicker {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.auth-form {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}

.auth-register {
  margin-top: 28px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.auth-register summary {
  cursor: pointer;
}

.page {
  max-width: 1080px;
  margin: 0 auto;
  padding: 20px;
}

.toolbar,
.form-grid,
.meta-row,
.actions,
.pager-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: end;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 140px;
}

.field.grow {
  flex: 1;
  min-width: 180px;
}

.month-picker {
  display: flex;
  gap: 8px;
}

.month-picker select {
  min-width: 92px;
}

.field span,
.field > label {
  color: var(--muted);
  font-size: 12px;
}

input[type="text"],
input[type="number"],
input[type="date"],
input[type="month"],
input[type="search"],
input[type="file"],
input[type="password"],
select,
textarea {
  border: 1px solid var(--line);
  background: #fff;
  padding: 8px 10px;
  min-height: 38px;
}

textarea {
  min-height: 88px;
  resize: vertical;
}

.btn {
  border: 1px solid var(--line-strong);
  background: #fff;
  min-height: 38px;
  padding: 8px 14px;
}

.btn:hover {
  background: var(--fill);
}

.btn-primary {
  background: #111;
  color: #fff;
}

.btn-primary:hover {
  background: #333;
}

.btn-danger {
  border-color: var(--danger);
  color: var(--danger);
}

.summary {
  margin: 16px 0;
  border: 1px solid var(--line);
  padding: 12px 14px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.table-wrap {
  overflow: auto;
  border: 1px solid var(--line);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 8px 10px;
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--fill);
  font-weight: 600;
  white-space: nowrap;
}

.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.empty {
  color: var(--muted);
  padding: 28px 8px;
  text-align: center;
}

.thumbs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.thumb {
  width: 48px;
  height: 48px;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--fill);
  padding: 0;
}

.row-actions {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.row-actions .btn {
  min-height: 32px;
  padding: 4px 8px;
}

dialog {
  border: 1px solid var(--line-strong);
  padding: 0;
  width: min(720px, calc(100vw - 24px));
  box-shadow: var(--shadow);
}

dialog::backdrop {
  background: rgba(0, 0, 0, 0.35);
}

.dialog-body {
  padding: 18px;
}

.dialog-body h2 {
  margin: 0 0 14px;
  font-size: 18px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.form-grid .wide {
  grid-column: 1 / -1;
}

.check-row {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 38px;
}

.hint {
  color: var(--muted);
  font-size: 12px;
}

.error {
  color: var(--danger);
  margin: 8px 0 0;
  min-height: 1.4em;
}

.dropzone {
  border: 1px dashed var(--line-strong);
  min-height: 92px;
  padding: 12px;
  display: grid;
  place-items: center;
  text-align: center;
  background: #fafafa;
}

.dropzone.is-over {
  background: #eee;
}

.attach-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.attach-item {
  position: relative;
  width: 88px;
}

.attach-item img {
  width: 88px;
  height: 88px;
  object-fit: cover;
  border: 1px solid var(--line);
}

.pdf-thumb {
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  background: #f5f5f5;
  color: #222;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.attach-item .btn {
  width: 100%;
  min-height: 28px;
  padding: 2px 6px;
  margin-top: 4px;
}

.preview-dialog {
  width: min(960px, calc(100vw - 24px));
  background: #111;
  color: #fff;
}

.preview-dialog img {
  width: 100%;
  max-height: 80vh;
  object-fit: contain;
  background: #000;
}

.preview-dialog form {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 12px;
}

.card {
  border: 1px solid var(--line);
  padding: 16px;
  margin-bottom: 16px;
}

.card h2 {
  margin: 0 0 12px;
  font-size: 16px;
}

.cat-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 8px 0 12px;
}

.cat-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  padding: 6px 8px;
}

.report-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 16px;
  align-items: start;
}

.exclude-list {
  max-height: 70vh;
  overflow: auto;
  border: 1px solid var(--line);
  padding: 8px;
}

.exclude-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px;
  padding: 8px;
  border-bottom: 1px solid var(--line);
}

.exclude-item:last-child {
  border-bottom: 0;
}

.sheet {
  border: 1px solid var(--line-strong);
  padding: 18px 20px 16px;
  font-family: var(--font-doc);
  background: #fff;
}

.approval-sheet {
  border: 1.5px solid #111;
  background: #fff;
  font-family: var(--font-doc);
}

.approval-sheet h2 {
  margin: 0;
  padding: 18px 12px;
  text-align: center;
  font-size: 22px;
  letter-spacing: 0.08em;
}

.approval-meta {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 8px 14px 14px;
  font-size: 15px;
}

.approval-main {
  display: grid;
  grid-template-columns: minmax(0, 3fr) repeat(4, minmax(105px, 1fr));
  border-top: 1px solid #111;
  min-height: 168px;
}

.approval-reason,
.approval-signatures > div {
  padding: 10px;
  border-right: 1px solid #111;
}

.approval-reason h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.approval-reason-list {
  display: grid;
  gap: 5px;
  font-size: 13px;
  line-height: 1.45;
  word-break: break-word;
}

.approval-signatures {
  display: contents;
}

.approval-signatures > div:last-child {
  border-right: 0;
}

.approval-total {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr) auto;
  min-height: 72px;
  border-top: 1px solid #111;
}

.approval-total-label,
.approval-uppercase,
.approval-digits {
  display: flex;
  align-items: center;
  padding: 8px 10px;
  border-right: 1px solid #111;
}

.approval-total-label {
  justify-content: center;
  font-size: 17px;
}

.approval-uppercase {
  font-size: 15px;
}

.approval-digits {
  padding: 0;
  border-right: 0;
}

.currency-mark {
  padding: 0 8px;
  font-size: 18px;
}

.digit-boxes {
  display: grid;
  grid-template-columns: repeat(11, 28px);
  align-self: stretch;
}

.digit-boxes span {
  display: grid;
  place-items: center;
  border-left: 1px solid #111;
  font-size: 16px;
}

.approval-note {
  margin: 0;
  padding: 7px 10px;
  border-top: 1px solid #111;
  font-size: 13px;
}

.sheet-title {
  text-align: center;
  font-size: 22px;
  letter-spacing: 0.18em;
  margin: 0 0 10px;
}

.sheet-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px 16px;
  margin-bottom: 10px;
  font-size: 14px;
}

.sheet table {
  font-size: 13px;
}

.sheet th,
.sheet td {
  border: 1px solid var(--line-strong);
  padding: 5px 6px;
}

.sheet th {
  background: #f3f3f3;
  text-align: center;
}

.sheet .purpose {
  word-break: break-word;
}

.total-line {
  margin: 10px 0 18px;
  font-size: 15px;
  text-align: right;
}

.signs {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
  font-size: 14px;
}

.sign-box {
  min-height: 64px;
  border-top: 1px solid transparent;
}

.sign-line {
  margin-top: 28px;
  border-bottom: 1px solid var(--line-strong);
  height: 22px;
}

.appendix {
  margin-top: 18px;
  page-break-before: always;
}

.appendix h2 {
  margin: 0 0 10px;
  font-size: 16px;
  letter-spacing: 0.08em;
}

.voucher {
  break-inside: avoid;
  border: 1px solid var(--line);
  padding: 6px;
  min-width: 0;
}

.voucher p {
  margin: 0 0 6px;
  font-size: 12px;
  line-height: 1.35;
  word-break: break-word;
}

.voucher-page {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  break-after: page;
  page-break-after: always;
}

.voucher-page:last-child {
  break-after: auto;
  page-break-after: auto;
}

.voucher img {
  width: 100%;
  height: 82mm;
  max-height: 240px;
  object-fit: contain;
  border: 1px solid var(--line);
  background: #fafafa;
}

.pdf-voucher {
  display: block;
  padding: 14px;
  border: 1px solid var(--line);
  color: inherit;
  text-decoration: underline;
}

.compact .sheet table,
.compact .sheet th,
.compact .sheet td {
  font-size: 11px;
  padding: 2px 4px;
}

.compact .sheet-title {
  font-size: 18px;
  margin-bottom: 6px;
}

.compact .sheet-meta,
.compact .total-line,
.compact .signs {
  font-size: 12px;
}

.compact .sign-line {
  margin-top: 16px;
}

.status {
  margin-top: 10px;
  color: var(--muted);
}

@media (max-width: 700px) {
  .app-header {
    align-items: flex-start;
    flex-direction: column;
    padding: 14px 16px;
  }

  .app-nav {
    width: 100%;
    gap: 6px;
  }

  .app-nav a,
  .app-nav .btn {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }

  .account-bar {
    flex-basis: 100%;
    width: 100%;
    justify-content: space-between;
    padding: 8px 0 0;
    border-top: 1px solid var(--line);
  }

  .page {
    padding: 16px;
  }

  .ledger-page .toolbar {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    align-items: stretch;
  }

  .ledger-page .toolbar .field,
  .ledger-page .toolbar .field.grow,
  .ledger-page #btn-add {
    width: 100%;
    min-width: 0;
  }

  .ledger-page .month-picker select {
    flex: 1;
    min-width: 0;
  }

  .ledger-page #btn-add,
  .expense-table .btn {
    min-height: 44px;
  }

  .ledger-page .table-wrap {
    overflow: visible;
    border: 0;
  }

  .expense-table,
  .expense-table tbody,
  .expense-table tr,
  .expense-table td {
    display: block;
    width: 100%;
  }

  .expense-table thead {
    display: none;
  }

  .expense-table tr {
    margin-bottom: 12px;
    padding: 8px 12px;
    border: 1px solid var(--line);
  }

  .expense-table td {
    display: grid;
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 12px;
    padding: 9px 0;
    border-bottom: 1px solid var(--line);
    text-align: left;
    overflow-wrap: anywhere;
  }

  .expense-table td:last-child {
    border-bottom: 0;
  }

  .expense-table td::before {
    color: var(--muted);
    font-size: 12px;
    font-weight: 600;
  }

  .expense-table td:nth-child(1)::before { content: "日期"; }
  .expense-table td:nth-child(2)::before { content: "类别"; }
  .expense-table td:nth-child(3)::before { content: "用途"; }
  .expense-table td:nth-child(4)::before { content: "发票"; }
  .expense-table td:nth-child(5)::before { content: "金额"; }
  .expense-table td:nth-child(6)::before { content: "凭证"; }
  .expense-table td:nth-child(7)::before { content: "操作"; }

  .expense-table .row-actions {
    gap: 8px;
  }

  .expense-table .row-actions .btn {
    flex: 1;
  }
}

@media (max-width: 860px) {
  .report-layout,
  .form-grid {
    grid-template-columns: 1fr;
  }

  .app-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .approval-main {
    grid-template-columns: 1fr 1fr;
  }

  .approval-reason {
    grid-column: 1 / -1;
  }

  .approval-total {
    grid-template-columns: 1fr;
  }

  .approval-total-label,
  .approval-uppercase {
    border-right: 0;
    border-bottom: 1px solid #111;
  }
}