.page {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1.5rem;
}

.layout-3col {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr) 320px;
  gap: 1.5rem;
}

.layout-2col {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 1.5rem;
}

.topbar {
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr;
  align-items: center;
  padding: 0.75rem 1.5rem;
  background: rgba(10, 10, 15, 0.95);
  border-bottom: 1px solid #2B2B33;
  position: sticky;
  top: 0;
  z-index: 50;
}