.reading-columns {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}

.reading-columns article {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface);
  padding: 1rem;
}

.reading-columns h3 {
  margin: 0;
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.08;
  letter-spacing: -0.025em;
}

.reading-columns ul {
  display: grid;
  gap: 0;
  padding: 0;
  margin: 1rem 0 0;
  list-style: none;
}

.reading-columns li {
  color: var(--muted);
  position: relative;
  padding: 0.55rem 0 0.55rem 1.45rem;
  border-top: 1px solid var(--line);
  font-size: 0.87rem;
  line-height: 1.45;
  text-wrap: pretty;
}

.reading-columns li::before {
  position: absolute;
  left: 0;
  color: var(--accent);
  content: "✓";
}

@media (max-width: 760px) {
  .reading-columns {
    grid-template-columns: 1fr;
  }
}