.custom-post-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.custom-side-card {
  padding: 1rem;
  background: var(--board-color);
  border: 1px solid var(--line-color);
  border-radius: 0.5rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.04);
}

.custom-side-card-title {
  margin-bottom: 0.75rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-color);
}

.custom-side-card-body {
  font-size: 0.9rem;
  color: var(--sec-text-color);
}

.custom-side-notice {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  text-align: center;
}

.custom-side-avatar {
  display: block;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--line-color);
}

.custom-side-username {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-color);
  line-height: 1.4;
}

.custom-side-note-text {
  margin: 0;
  line-height: 1.6;
}

.custom-side-group + .custom-side-group {
  margin-top: 1rem;
}

.custom-side-group-title {
  margin-bottom: 0.6rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--sec-text-color);
}

.custom-side-tree {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.custom-side-tree-node {
  position: relative;
}

.custom-side-tree-depth-1,
.custom-side-tree-depth-2,
.custom-side-tree-depth-3,
.custom-side-tree-depth-4 {
  padding-left: 1rem;
}

.custom-side-tree-depth-1::before,
.custom-side-tree-depth-2::before,
.custom-side-tree-depth-3::before,
.custom-side-tree-depth-4::before {
  content: "";
  position: absolute;
  left: 0.35rem;
  top: 0.2rem;
  bottom: 0.2rem;
  width: 1px;
  background: var(--line-color);
}

.custom-side-tree-link {
  display: inline-block;
  color: var(--text-color);
  font-size: 0.9rem;
  line-height: 1.5;
}

.custom-side-tree-link:hover {
  color: var(--link-hover-color);
  text-decoration: none;
}

.custom-side-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.custom-side-chip {
  display: inline-block;
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--line-color);
  border-radius: 999px;
  font-size: 0.85rem;
  line-height: 1.4;
  color: var(--text-color);
  background: var(--board-color);
}

.custom-side-chip:hover {
  text-decoration: none;
  background: var(--link-hover-bg-color);
  color: var(--link-hover-color);
}

.custom-side-links {
  margin: 0;
  padding: 0;
  list-style: none;
}

.custom-side-link-item + .custom-side-link-item {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--line-color);
}

.custom-side-link-item a {
  font-weight: 600;
  word-break: break-word;
}

.custom-side-link-desc {
  margin-top: 0.3rem;
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--sec-text-color);
}