/* Notation list / categories (Pencil: NtLst) */

.notation-hero {
  padding: 80px 0;
  text-align: center;
  background: var(--color-bg-primary);
}

.notation-hero h1 {
  font-size: 48px;
  font-weight: bold;
  line-height: 1.1;
  color: #18181B;
  margin-bottom: 24px;
}

.notation-hero p {
  font-size: 20px;
  font-weight: 400;
  line-height: 1.6;
  color: #71717A;
}

.notation-content {
  padding: 0 0 80px;
  background: var(--color-bg-primary);
}

.notation-category {
  border-radius: 22px;
  padding: 30px 26px;
  background: #FFFFFF;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.0706);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.category-header {
  display: flex;
  align-items: center;
  gap: 16px;
}

.category-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.category-title {
  font-size: 22px;
  font-weight: 700;
  color: #18181B;
}

.category-subtitle {
  margin-top: 4px;
  font-size: 15px;
  font-weight: 400;
  color: #64748B;
}

.category-lessons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.lesson-tile {
  width: 240px;
  border-radius: 18px;
  padding: 20px 18px;
  background: #F8FAFC;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.lesson-tile:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.lesson-tile .t {
  font-size: 17px;
  font-weight: 600;
  color: #18181B;
}

.lesson-tile .d {
  font-size: 13px;
  font-weight: 400;
  color: #64748B;
  line-height: 1.6;
}

@media (max-width: 1024px) {
  .lesson-tile {
    width: 100%;
  }
}