.series-page {
  margin: 0 auto;
  padding: 1.5rem 1rem;
}

/* Skeleton */
.series-skeleton {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.series-skeleton-block {
  border-radius: 12px;
  border: 1px solid var(--border);
  padding: 1.5rem;
}

.series-skeleton-block .skeleton-heading {
  height: 28px;
  width: 200px;
  margin-bottom: 0.75rem;
}

.series-skeleton-block .skeleton-item {
  height: 52px;
  margin-bottom: 0.75rem;
  border-radius: 8px;
}

/* Header */
.series-header {
  margin-top: 24px;
  margin-bottom: 0.75rem;
}

.series-header h2::before {
  display: none;
}

/* Series container */
.series-container {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

/* Series block card */
.series-block {
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.series-block-header {
  padding: 1.5rem 1.75rem;
  background: linear-gradient(135deg, var(--bg-soft) 0%, var(--bg-card) 100%);
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  user-select: none;
}

.series-block-header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.series-block-title-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.series-chevron {
  transition: transform 0.25s ease;
  color: var(--text-secondary);
  flex-shrink: 0;
}

.series-block.collapsed .series-chevron {
  transform: rotate(-90deg);
}

.series-block.collapsed .series-posts,
.series-block.collapsed .show-more-bar {
  display: none;
}

.series-block.collapsed .series-block-header {
  border-bottom: none;
}

.series-start-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--primary);
  border-radius: 999px;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.series-start-btn:hover {
  background: var(--primary);
  color: #fff;
}

.series-block-title {
  margin: 0;
  font-size: 1.3rem;
}

.series-block-title::before {
  display: none !important;
}

.series-block-description {
  margin: 0.5rem 0 0;
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.5;
}

.series-block-title .tag-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  color: #fff;
  background: var(--primary);
  min-width: 1.35rem;
  height: 1.35rem;
  padding: 0 0.35rem;
  border-radius: 999px;
  margin-left: 0.4rem;
  vertical-align: middle;
  line-height: 1;
}

/* Timeline post list */
.series-posts {
  list-style: none;
  padding: 1.25rem 1.75rem;
  margin: 0;
  position: relative;
}

.series-posts::before {
  content: '';
  position: absolute;
  left: calc(1.75rem + 0.875rem - 1px);
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.series-posts li {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 0;
  position: relative;
}

.series-posts li .step-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: var(--bg-card);
  border: 2px solid var(--primary);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary);
  z-index: 1;
  flex-shrink: 0;
}

.series-posts li:hover .step-indicator {
  background: var(--primary);
  color: #fff;
}

.series-posts li .step-content {
  flex: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 0.6rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  transition: all 0.2s ease;
}

.series-posts li:hover .step-content {
  border-color: var(--primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  transform: translateX(4px);
}

.series-posts li .step-content a {
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 500;
  font-size: 0.925rem;
  flex: 1;
  transition: color 0.2s ease;
}

.series-posts li:hover .step-content a {
  color: var(--primary);
}

.series-posts .post-date {
  font-size: 0.8rem;
  color: var(--muted);
  white-space: nowrap;
}

@media (max-width: 768px) {
  .series-block-header {
    padding: 1.25rem;
  }

  .series-posts {
    padding: 1rem 1.25rem;
  }

  .series-posts::before {
    left: calc(1.25rem + 0.75rem - 1px);
  }

  .series-posts li .step-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
    padding: 0.5rem 0.75rem;
  }

  .series-posts li .step-indicator {
    min-width: 1.5rem;
    height: 1.5rem;
    font-size: 0.7rem;
  }
}



.series-description {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-top: -0.25rem;
  padding-bottom: 1.25rem;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}