@media screen and (max-width: 768px) {
  .table-responsive-sm table {
    border: none;
  }

  .table-responsive-sm thead {
    /* Hide the header row visually but keep it for screen readers */
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }

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

  .table-responsive-sm tbody tr {
    margin-bottom: 1.25rem;
    border: 1px solid #ddd;
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
  }

  /* Section header rows (colspan="4", e.g. "Writing", "Curricula") */
  .table-responsive-sm tbody tr td[colspan] {
    text-align: center;
    padding: 0.6rem 0.75rem;
  }

  .table-responsive-sm tbody tr td[colspan]::before {
    content: none;
  }

  /* Row title (the <th scope="row">) */
  .table-responsive-sm tbody th[scope="row"] {
    background: #f8f9fa;
    font-weight: bold;
    font-size: 1.05rem;
    padding: 0.65rem 0.9rem;
    border-bottom: 1px solid #eee;
  }

  /* Data cells: Dates / Notes / Registration & Information */
  .table-responsive-sm tbody td:not([colspan]) {
    position: relative;
    padding: 0.65rem 0.9rem 0.65rem 0.9rem;
    border-bottom: 1px solid #eee;
    text-align: left !important;
  }

  .table-responsive-sm tbody td:not([colspan]):last-child {
    border-bottom: none;
  }

  .table-responsive-sm tbody td:not([colspan])::before {
    content: attr(data-label);
    display: block;
    font-weight: bold;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
    color: #6c757d;
    margin-bottom: 0.25rem;
  }
}