/* ==========================================================================
   About Section
   ========================================================================== */
.about-section {
  background-color: rgba(245, 245, 244, 0.7);
  border-bottom: 1px solid var(--stone-200);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 4rem;
}

@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.about-card {
  background-color: #ffffff;
  border-radius: var(--radius-2xl);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(231, 229, 228, 0.8);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.card-title-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.card-icon {
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.card-icon.teal {
  background-color: var(--teal-50);
  border: 1px solid var(--teal-200);
  color: var(--teal-700);
}

.card-icon.amber {
  background-color: var(--amber-50);
  border: 1px solid var(--amber-200);
  color: var(--amber-700);
}

.card-heading {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--stone-900);
}

.card-subheading {
  font-size: 0.75rem;
  color: var(--stone-500);
  font-weight: 500;
}

.card-text {
  font-size: 0.875rem;
  color: var(--stone-600);
  line-height: 1.625;
}

.bullet-list {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  font-size: 0.875rem;
  color: var(--stone-700);
  list-style: none;
}

.bullet-item {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
}

.bullet-dot {
  width: 0.375rem;
  height: 0.375rem;
  border-radius: var(--radius-full);
  background-color: var(--teal-600);
  margin-top: 0.5rem;
  flex-shrink: 0;
}

.delivery-box {
  background-color: var(--stone-50);
  border-radius: var(--radius-xl);
  padding: 1rem;
  border: 1px solid var(--stone-200);
}

.delivery-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--stone-900);
  font-weight: 600;
  font-size: 0.875rem;
}

.delivery-title svg {
  color: var(--teal-700);
}

.delivery-desc {
  font-size: 0.75rem;
  color: var(--stone-600);
  margin-top: 0.25rem;
  line-height: 1.5;
}

.structure-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--teal-800);
  background-color: var(--teal-50);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--teal-200);
}

/* Comparison Table */
.comparison-card {
  background-color: #ffffff;
  border-radius: var(--radius-2xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--stone-200);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

@media (min-width: 640px) {
  .comparison-card {
    padding: 2rem;
  }
}

.comparison-header {
  text-align: center;
  max-width: 36rem;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.comparison-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--stone-900);
}

.comparison-desc {
  font-size: 0.875rem;
  color: var(--stone-500);
}

.table-responsive {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.comparison-table {
  width: 100%;
  text-align: left;
  font-size: 0.875rem;
  border-collapse: collapse;
}

.comparison-table th, .comparison-table td {
  padding: 0.875rem 1rem;
}

.comparison-table th {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--stone-200);
}

.comparison-table th.col-feature {
  color: var(--stone-500);
  width: 30%;
}

.comparison-table th.col-tutoring {
  color: var(--stone-400);
  background-color: rgba(245, 245, 244, 0.7);
  width: 35%;
}

.comparison-table th.col-nild {
  color: var(--teal-900);
  background-color: rgba(240, 253, 250, 0.8);
  border-left: 1px solid var(--teal-200);
  border-right: 1px solid var(--teal-200);
  width: 35%;
}

.comparison-table tbody tr {
  border-bottom: 1px solid var(--stone-100);
}

.comparison-table td.cell-feature {
  font-weight: 600;
  color: var(--stone-900);
}

.comparison-table td.cell-tutoring {
  color: var(--stone-600);
  background-color: rgba(245, 245, 244, 0.4);
}

.comparison-table td.cell-nild {
  font-weight: 500;
  color: var(--teal-950);
  background-color: rgba(240, 253, 250, 0.4);
  border-left: 1px solid var(--teal-100);
  border-right: 1px solid var(--teal-100);
}