/* Knowledge Discovery — guided entry points plus a scannable topic index. */
.learning-paths {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.learning-path {
  min-width: 0;
  min-height: 132px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-4);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  background: var(--color-surface);
  text-align: right;
  box-shadow: var(--shadow-sm);
  transition: transform var(--motion-fast), border-color var(--motion-fast), box-shadow var(--motion-fast), background var(--motion-fast);
}

.learning-path:hover {
  transform: translateY(-2px);
  border-color: var(--color-border-strong);
  background: #fffdf9;
  box-shadow: var(--shadow-hover);
}

.path-label {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 3px 8px;
  border-radius: var(--radius-pill);
  color: var(--color-accent-hover);
  background: var(--color-accent-soft);
  font-size: var(--type-meta);
  font-weight: 800;
}

.learning-path strong {
  display: block;
  color: var(--color-text);
  font-size: var(--type-body);
  font-weight: 800;
  line-height: 1.7;
}

.learning-path small {
  display: block;
  color: var(--color-text-secondary);
  font-size: var(--type-support);
  line-height: 1.75;
}

.topic-index {
  padding: var(--space-5) var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

.topic-index-head {
  margin-bottom: var(--space-3);
}

.topic-index-head h3 {
  margin: 0;
  color: var(--color-text);
  font-size: var(--type-h3);
  font-weight: 800;
}

.topic-index-head p {
  margin: 4px 0 0;
  color: var(--color-text-muted);
  font-size: var(--type-support);
  line-height: 1.8;
}

.topic-groups {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-4) var(--space-6);
}

.topic-group {
  min-width: 0;
}

.topic-group h4 {
  margin: 0 0 var(--space-2);
  color: var(--color-primary);
  font-size: var(--type-support);
  font-weight: 800;
}

.topic-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid #eee9f0;
}

.topic-list li {
  border-bottom: 1px solid #eee9f0;
}

.topic-list button {
  width: 100%;
  min-height: 66px;
  display: block;
  padding: 11px 2px;
  border: 0;
  color: var(--color-text);
  background: transparent;
  text-align: right;
  transition: color var(--motion-fast), padding-inline-start var(--motion-fast);
}

.topic-list button:hover {
  color: var(--color-primary);
  padding-inline-start: 6px;
}

.topic-list strong {
  display: block;
  color: inherit;
  font-size: var(--type-body);
  font-weight: 780;
  line-height: 1.7;
}

.topic-list span {
  display: block;
  margin-top: 2px;
  color: var(--color-text-secondary);
  font-size: var(--type-support);
  line-height: 1.75;
}

.discovery-tip {
  margin-top: var(--space-3);
  padding: 10px 12px;
  border-right: 3px solid var(--color-accent);
  color: var(--color-text-secondary);
  background: var(--color-accent-soft);
  font-size: var(--type-support);
  line-height: 1.8;
}

@media (max-width: 1080px) {
  .learning-paths { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 680px) {
  .learning-paths,
  .topic-groups { grid-template-columns: 1fr; }

  .learning-path { min-height: 0; }
  .topic-index { padding: var(--space-4); }
  .topic-list button { min-height: 62px; }
}

@media (max-width: 380px) {
  .learning-path,
  .topic-index { padding-inline: 14px; }
}