/* HarborBeat — Series / hubs (Apple aesthetic). */
.hb-series-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--blue, #0071e3);
  margin-bottom: .4rem;
}
.hb-series-count { color: var(--ink-2, #6e6e73); font-size: .9rem; }

/* On-article link to its series */
.hb-series-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .82rem;
  font-weight: 600;
  color: var(--blue, #0071e3);
  text-decoration: none;
  background: rgba(0, 113, 227, .08);
  padding: .3rem .7rem;
  border-radius: 999px;
  margin-bottom: .75rem;
}
.hb-series-link:hover { background: rgba(0, 113, 227, .14); color: var(--blue, #0071e3); }

/* Series index grid */
.hb-series-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.1rem;
}
.hb-series-card {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  padding: 1.25rem;
  border: 1px solid var(--line, #d2d2d7);
  border-radius: var(--radius, 18px);
  background: #fff;
  text-decoration: none;
  color: inherit;
  transition: transform .18s ease, box-shadow .18s ease;
}
.hb-series-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, .08);
  color: inherit;
}
.hb-series-card-title {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--ink, #1d1d1f);
}
.hb-series-card-desc {
  margin: 0;
  font-size: .92rem;
  line-height: 1.5;
  color: var(--ink-2, #6e6e73);
}
.hb-series-card-count {
  margin-top: auto;
  font-size: .8rem;
  font-weight: 600;
  color: var(--blue, #0071e3);
}