/* L2 long-form layout: sticky page directory on the left. */
.l2-wrap {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px 56px;
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr);
  gap: 36px;
  align-items: start;
}

.l2-article {
  min-width: 0;
  max-width: 860px;
}

.l2-toc {
  position: sticky;
  top: 118px;
  background: var(--blue-50);
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  padding: 18px;
  max-height: calc(100vh - 142px);
  overflow-y: auto;
}

.l2-toc h3 {
  font-size: 14px;
  font-weight: 800;
  color: var(--gray-900);
  margin: 0 0 12px;
}

.l2-toc ol {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: l2toc;
  display: grid;
  gap: 9px;
}

.l2-toc li {
  counter-increment: l2toc;
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 8px;
  align-items: start;
  font-size: 13px;
  line-height: 1.5;
}

.l2-toc li::before {
  content: counter(l2toc);
  display: inline-flex;
  width: 20px;
  height: 20px;
  background: var(--blue);
  color: var(--white);
  border-radius: 50%;
  font-size: 11px;
  font-weight: 700;
  align-items: center;
  justify-content: center;
}

.l2-toc a {
  color: var(--gray-700);
  text-decoration: none;
  overflow-wrap: anywhere;
}

.l2-toc a:hover { color: var(--blue); }

@media (max-width: 900px) {
  .l2-wrap {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 24px;
  }
}

@media (max-width: 768px) {
  .l2-wrap {
    display: block;
    padding: 20px 16px 40px;
  }
  .l2-toc {
    position: static;
    max-height: none;
    margin: 0 0 24px;
  }
  .l2-toc ol {
    grid-template-columns: 1fr 1fr;
    gap: 8px 14px;
  }
}

@media (max-width: 480px) {
  .l2-toc ol { grid-template-columns: 1fr; }
}