@media (max-width: 1180px) {
  .main-view {
    grid-template-columns: 210px 1fr;
  }

  .home-layout,
  .settlement-layout,
  .admin-layout {
    grid-template-columns: 1fr;
  }

  .settlement-layout {
    grid-template-areas:
      "overview"
      "packages"
      "details";
  }

  .insight-strip {
    grid-template-columns: repeat(2, minmax(180px, 1fr));
  }

  .analysis-panel {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 800px) {
  .package-card header,
  .package-card footer {
    align-items: stretch;
    flex-direction: column;
  }

  .package-card footer small {
    white-space: normal;
    line-height: 1.45;
  }

  .package-actions {
    justify-content: flex-start;
  }

  .package-filter-bar {
    grid-template-columns: 1fr;
    margin: 0 12px 10px;
  }

  .package-list-summary {
    align-items: stretch;
    flex-direction: column;
    margin: 0 12px 10px;
  }

  .package-list-summary button {
    width: 100%;
  }

  .package-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .shared-package-row {
    grid-template-columns: 1fr;
  }

  .controls,
  .filter-group,
  .main-filters,
  .analysis-kpis,
  .stats-analysis-grid,
  .monthly-subject-list,
  .insight-strip,
  .home-layout,
  .analytics-grid,
  .analytics-table-grid,
  .split-layout,
  .settlement-layout,
  .admin-layout,
  .analysis-panel {
    grid-template-columns: 1fr;
  }

  .settlement-layout {
    grid-template-areas:
      "overview"
      "packages"
      "details";
  }

  .controls {
    justify-content: stretch;
    gap: 10px;
    margin-bottom: 12px;
    border-radius: 10px;
    padding: 12px;
  }

  .main-filters {
    gap: 10px;
  }

  .more-filters:not([open]) {
    border-top: 0;
    padding-top: 0;
  }

  #scheduleImportButton,
  #templateExportButton,
  #exportButton {
    display: none;
  }

  .mobile-course-layout button[data-delete],
  .mobile-course-layout button[data-repeat-course],
  .mobile-course-layout #calendarCourseDelete {
    display: none;
  }

  .controls label {
    gap: 6px;
  }

  .controls label span,
  .more-filters summary {
    font-size: 12px;
  }

  .field-grid {
    grid-template-columns: 1fr;
  }

  #masterPage::before,
  #adminPage::before {
    content: "此页面适合在电脑端维护。手机端建议只用于查看课程、课时和待处理状态。";
    display: block;
    margin: 0 0 12px;
    border: 1px solid #fed7aa;
    border-radius: 10px;
    padding: 12px;
    color: #9a3412;
    background: #fff7ed;
    font-size: 13px;
    font-weight: 900;
    line-height: 1.45;
  }

  #masterPage .split-layout,
  #adminPage .admin-layout {
    display: none;
  }

  #backupImportButton,
  #backupRestoreButton,
  #backupExportButton,
  #sqliteSnapshotButton,
  #syncReferenceButton,
  #repairPackageLinksButton {
    display: none;
  }

  .more-filters {
    padding-top: 8px;
  }

  .more-filters[open] summary {
    margin-bottom: 10px;
  }

  .range-hint {
    max-width: none;
  }

  .active-filter-chips,
  .quick-actions {
    flex-wrap: wrap;
    overflow: visible;
    margin-left: 0;
    margin-right: 0;
    padding: 0;
  }

  .filter-chip,
  .quick-actions button {
    flex: 1 1 104px;
    min-height: 40px;
  }

  .view-status-bar {
    align-items: stretch;
    margin-bottom: 12px;
  }

  .view-status-actions {
    overflow-x: auto;
    justify-content: flex-start;
    -webkit-overflow-scrolling: touch;
  }

  .view-status-bar span {
    white-space: normal;
  }

  .board,
  .controls,
  .kpis article,
  .panel-card {
    border-radius: 10px;
  }

  .board {
    min-height: auto;
  }

  .board-header {
    padding: 16px;
  }

  .kpis {
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 210px), 1fr));
    gap: 10px;
  }

  .analysis-kpis {
    gap: 10px;
  }

  .overdue-panel {
    margin: 14px 0 0;
    padding: 16px;
  }

  .overdue-panel-head,
  .overdue-row {
    grid-template-columns: 1fr;
  }

  .settlement-overview-primary {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .backup-actions {
    grid-template-columns: 1fr;
  }

  .donut-chart {
    grid-template-columns: 1fr;
    justify-items: center;
  }

  .course-card {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 13px;
  }

  .time {
    display: inline-block;
    width: max-content;
    max-width: 100%;
    border-radius: 999px;
    padding: 6px 10px;
    color: var(--ink);
    background: #eef3f0;
    font-size: 13px;
    line-height: 1.25;
  }

  .course-main strong {
    overflow-wrap: anywhere;
    font-size: 15px;
    line-height: 1.35;
  }

  .course-main p {
    margin-bottom: 10px;
    font-size: 14px;
    line-height: 1.6;
  }

  .meta {
    gap: 6px;
  }

  .meta span {
    border-radius: 999px;
    padding: 4px 8px;
    background: #f3f6f5;
    line-height: 1.25;
  }

  .action-row {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .ledger-row {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 10px;
    align-items: start;
    padding: 12px;
  }

  .ledger-time {
    align-self: start;
    border-radius: 8px;
    padding: 8px;
    background: #f4f7f6;
  }

  .ledger-main {
    min-width: 0;
  }

  .ledger-main strong,
  .ledger-main span,
  .ledger-main small {
    white-space: normal;
    overflow-wrap: anywhere;
    line-height: 1.4;
  }

  .ledger-hours {
    grid-column: 1 / -1;
    grid-template-columns: auto 1fr;
    align-items: baseline;
    border-radius: 8px;
    padding: 8px 10px;
    background: #f8faf9;
  }

  .ledger-row .row-actions {
    grid-column: 1 / -1;
    justify-content: flex-start;
    max-width: none;
  }

  .ledger-row .package-select {
    flex: 1 1 180px;
  }

  .ledger-row .status-select {
    flex: 1 1 112px;
  }

  .table-wrap {
    border-radius: 10px;
    -webkit-overflow-scrolling: touch;
  }

  .table-wrap table {
    min-width: 780px;
  }

  .scroll-top-button {
    right: 14px;
  }

}