/* 手机端自适应布局：仅在窄屏幕下启用。 */
@media (max-width: 760px) {
  html,
  body {
    width: 100%;
    min-width: 0;
    overflow-x: hidden;
  }

  /* 登录页 */
  #loginScreen.login-wrap {
    padding: 18px !important;
  }

  #loginScreen.login-wrap > .login-card {
    width: min(440px, calc(100vw - 36px)) !important;
    padding: 28px 22px !important;
  }

  /* 主系统：左侧菜单改为底部横向导航 */
  .sidebar {
    position: fixed !important;
    inset: auto 0 0 0 !important;
    width: 100% !important;
    height: 68px !important;
    min-height: 68px !important;
    z-index: 90 !important;
    display: block !important;
    border-right: 0 !important;
    border-top: 1px solid rgba(255,255,255,.12) !important;
    background: linear-gradient(90deg, var(--navy), var(--navy2)) !important;
  }

  .sidebar-brand,
  .sidebar-foot {
    display: none !important;
  }

  .sidebar nav {
    height: 68px !important;
    padding: 7px 8px !important;
    display: flex !important;
    flex-wrap: nowrap !important;
    gap: 7px !important;
    overflow-x: auto !important;
    overflow-y: hidden !important;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .sidebar nav::-webkit-scrollbar {
    display: none;
  }

  .sidebar nav .nav-item {
    flex: 0 0 auto !important;
    min-width: 76px !important;
    height: 54px !important;
    padding: 7px 9px !important;
    display: flex !important;
    flex-direction: column !important;
    justify-content: center !important;
    align-items: center !important;
    gap: 3px !important;
    text-align: center !important;
    font-size: 14px !important;
    line-height: 1 !important;
  }

  .sidebar nav .nav-item span {
    display: block !important;
    max-width: 76px !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    white-space: nowrap !important;
    font-size: 10px !important;
  }

  .main {
    margin-left: 0 !important;
    min-height: 100vh !important;
    padding-bottom: 78px !important;
  }

  .topbar {
    min-height: 64px !important;
    height: auto !important;
    padding: 12px 16px !important;
  }

  .topbar h2 {
    font-size: 18px !important;
  }

  .topbar p {
    font-size: 11px !important;
  }

  .top-actions {
    display: none !important;
  }

  .page {
    padding: 16px 14px 28px !important;
  }

  .notice {
    padding: 12px 13px !important;
    font-size: 13px !important;
  }

  .stats,
  .grid.two,
  .form-grid,
  .ai-grid,
  .followup-grid {
    grid-template-columns: 1fr !important;
  }

  .stats {
    gap: 10px !important;
    margin: 14px 0 !important;
  }

  .stat {
    padding: 14px !important;
  }

  .stat .value {
    font-size: 20px !important;
  }

  .card {
    padding: 16px !important;
    border-radius: 12px !important;
  }

  .card-head {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 9px !important;
  }

  .searchline {
    width: 100% !important;
    display: grid !important;
    grid-template-columns: 1fr !important;
  }

  .searchline input,
  .searchline button {
    width: 100% !important;
    min-width: 0 !important;
  }

  .row-lite {
    grid-template-columns: 1fr !important;
    gap: 5px !important;
  }

  .row-lite span {
    white-space: normal !important;
  }

  .row-actions {
    justify-content: flex-start !important;
  }

  .followup-select-row,
  .setting-row {
    display: grid !important;
    grid-template-columns: 1fr !important;
  }

  .modal {
    padding: 10px !important;
  }

  .modal-card,
  .modal.case-modal-force .modal-card {
    width: calc(100vw - 20px) !important;
    max-height: calc(100vh - 30px) !important;
  }

  .modal-head {
    padding: 15px !important;
  }

  .modal-body {
    padding: 4px 15px 15px !important;
  }

  .detail-row,
  .mapping-row {
    grid-template-columns: 1fr !important;
    gap: 4px !important;
  }
}