.series-hero .hero-copy > p:not(.eyebrow) { max-width: 720px; }
.series-mark {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 16px;
  color: var(--green-dark);
  font-size: .82rem;
  font-weight: 900;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.series-mark::before { content: ""; width: 30px; height: 3px; background: var(--green); }
.series-grid { display: grid; gap: 20px; margin-top: 28px; }
.series-card { position: relative; display: grid; gap: 18px; align-content: start; }
.series-card-number {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  font-weight: 900;
}
.series-card-number svg {
  width: 25px;
  height: 25px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.series-card-number img { display: block; width: 26px; height: 26px; }
.blog-filter-bar {
  padding: 16px 0;
  background: #fff;
  border-bottom: 1px solid var(--line);
}
.blog-type-filter {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
  padding: 6px;
  background: var(--green-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.blog-type-filter a {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 8px 10px;
  border-radius: 6px;
  color: var(--green-dark);
  font-size: .9rem;
  font-weight: 900;
  line-height: 1.2;
  text-align: center;
}
.blog-type-filter a:hover { background: #fff; text-decoration: none; }
.blog-type-filter a[aria-current="page"] { background: var(--green); color: #fff; }
.series-card h3 { font-size: clamp(1.35rem, 3vw, 1.75rem); }
.series-card .article-meta { margin-bottom: 8px; }
.series-themes { display: grid; gap: 14px; margin-top: 24px; }
.series-theme {
  padding: 18px;
  border-left: 4px solid var(--green);
  background: var(--green-soft);
  border-radius: 0 6px 6px 0;
}
.series-theme strong { display: block; color: var(--green-dark); }
.series-intro-card {
  padding: 26px;
  background: var(--green-dark);
  color: #fff;
  border-radius: var(--radius);
}
.series-intro-card h2, .series-intro-card p, .series-intro-card a { color: #fff; }
.series-intro-card .button.secondary, .series-cta .button.secondary { color: var(--green-dark); }
.series-article-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
  font-size: .92rem;
  font-weight: 800;
}
.series-article-nav a { color: var(--green-dark); }
.series-cta { margin-top: 48px; }
@media (min-width: 760px) {
  .series-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .series-themes { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}