.knowledge-section {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 90% 10%, rgb(59 130 246 / 0.08), transparent 28%),
    linear-gradient(180deg, #f8fbff 0%, #ffffff 100%);
}

.knowledge-heading {
  align-items: end;
}

.knowledge-heading > p {
  max-width: 520px;
  margin: 0;
  color: var(--slate-600);
  line-height: 1.75;
}

.knowledge-list {
  margin-top: 42px;
}

.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
}

.knowledge-card {
  min-width: 0;
  display: flex;
  flex-direction: column;
  min-height: 410px;
  padding: clamp(26px, 3vw, 38px);
  border: 1px solid rgb(148 163 184 / 0.26);
  border-radius: 24px;
  background:
    linear-gradient(180deg, rgb(248 251 255 / 0.95), #ffffff 34%),
    #ffffff;
  box-shadow: 0 18px 50px rgb(15 23 42 / 0.08);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.knowledge-card:hover {
  transform: translateY(-5px);
  border-color: rgb(37 99 235 / 0.3);
  box-shadow: 0 24px 60px rgb(15 23 42 / 0.12);
}

.knowledge-card-topline,
.knowledge-card-footer,
.knowledge-pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.knowledge-category {
  display: inline-flex;
  width: fit-content;
  padding: 6px 10px;
  border-radius: 999px;
  background: #eff6ff;
  color: #1d4ed8;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.knowledge-card-date,
.knowledge-card-author {
  color: #64748b;
  font-size: 0.76rem;
}

.knowledge-card h3 {
  margin: 24px 0 14px;
  color: #0f1e3d;
  font: 700 clamp(1.5rem, 2.5vw, 2rem)/1.2 var(--font-display);
}

.knowledge-card-summary {
  margin: 0 0 18px;
  color: #334155;
  font-weight: 700;
  line-height: 1.65;
}

.knowledge-card-text {
  display: -webkit-box;
  overflow: hidden;
  margin: 0;
  color: #5c6b82;
  line-height: 1.8;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 7;
}

.knowledge-card-footer {
  align-items: flex-end;
  margin-top: auto;
  padding-top: 26px;
  border-top: 1px solid rgb(148 163 184 / 0.2);
}

.knowledge-read-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0;
  border: 0;
  background: transparent;
  color: #1d4ed8;
  font-weight: 800;
  cursor: pointer;
}

.knowledge-read-button .icon {
  width: 17px;
  transition: transform 160ms ease;
}

.knowledge-read-button:hover .icon {
  transform: translateX(4px);
}

.knowledge-pagination {
  justify-content: center;
  margin-top: 28px;
}

.knowledge-pagination button {
  min-width: 108px;
  padding: 11px 16px;
  border: 1px solid rgb(148 163 184 / 0.35);
  border-radius: 12px;
  background: #ffffff;
  color: #1e3a8a;
  font-weight: 800;
  cursor: pointer;
}

.knowledge-pagination button:hover:not(:disabled) {
  border-color: #2563eb;
  color: #1d4ed8;
}

.knowledge-pagination button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.knowledge-pagination span {
  color: #64748b;
  font-size: 0.78rem;
  font-weight: 700;
}

.public-knowledge-state {
  min-height: 190px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 32px;
  border: 1px solid rgb(148 163 184 / 0.24);
  border-radius: 24px;
  background: #fff;
  color: #0f1e3d;
}

.public-knowledge-state p {
  margin: 6px 0 0;
  color: #64748b;
}

.public-knowledge-state-icon {
  width: 48px;
  height: 48px;
  display: grid;
  place-items: center;
  border-radius: 15px;
  background: #eff6ff;
  color: #1d4ed8;
}

.public-knowledge-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid #dbeafe;
  border-top-color: #2563eb;
  border-radius: 50%;
  animation: public-knowledge-spin 0.8s linear infinite;
}

@keyframes public-knowledge-spin {
  to { transform: rotate(360deg); }
}

.knowledge-modal-overlay {
  padding: 24px;
  overflow-y: auto;
}

.knowledge-reader {
  width: min(880px, 100%);
  max-height: none;
  overflow: hidden;
  padding: 0;
  border-radius: 26px;
}

.knowledge-reader-cover {
  height: min(360px, 42vh);
  overflow: hidden;
}

.knowledge-reader-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.knowledge-reader-close {
  z-index: 2;
  top: 16px;
  right: 16px;
  background: rgb(255 255 255 / 0.94);
  box-shadow: 0 8px 24px rgb(15 23 42 / 0.18);
}

.knowledge-reader-content {
  padding: clamp(28px, 5vw, 54px);
}

.knowledge-reader-content h2 {
  margin: 18px 0 12px;
  color: #0f1e3d;
  font: 700 clamp(2rem, 5vw, 3.2rem)/1.08 var(--font-display);
}

.knowledge-reader-meta {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  color: #64748b;
  font-size: 0.82rem;
}

.knowledge-reader-summary {
  margin: 26px 0;
  padding: 20px 22px;
  border-left: 4px solid #2563eb;
  border-radius: 0 14px 14px 0;
  background: #eff6ff;
  color: #334155;
  font-size: 1.05rem;
  line-height: 1.75;
}

.knowledge-reader-body {
  color: #334155;
  font-size: 1rem;
  line-height: 1.9;
}

.knowledge-reader-body p {
  margin: 0 0 20px;
}

@media (max-width: 820px) {
  .knowledge-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .knowledge-heading {
    align-items: flex-start;
  }

  .knowledge-list {
    margin-top: 30px;
  }

  .knowledge-card {
    min-height: 0;
  }

  .knowledge-card-topline,
  .knowledge-card-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .knowledge-pagination {
    flex-wrap: wrap;
  }

  .knowledge-pagination span {
    width: 100%;
    order: -1;
    text-align: center;
  }

  .knowledge-modal-overlay {
    padding: 10px;
  }

  .knowledge-reader-content {
    padding: 28px 22px;
  }
}