.oci-index {
  display: grid;
  gap: 20px;
  margin: 1.5em 0;
}

.oci-columns-1 { grid-template-columns: 1fr; }
.oci-columns-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.oci-columns-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.oci-columns-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.oci-columns-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }

.oci-origin-block {
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  background: #fff;
  padding: 16px 18px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.oci-origin-title {
  margin: 0 0 12px;
  padding: 0 0 10px;
  border-bottom: 2px solid #f0f2f5;
  font-size: 1.08rem;
  line-height: 1.4;
  font-weight: 700;
}

.oci-origin-title a,
.oci-character-item a {
  color: inherit;
  text-decoration: none;
}

.oci-origin-title a:hover,
.oci-character-item a:hover {
  text-decoration: underline;
}

.oci-character-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.oci-character-item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  max-width: 100%;
  border: 1px solid #edf0f3;
  border-radius: 999px;
  background: #f8fafc;
  padding: 6px 10px;
  font-size: 0.92rem;
  line-height: 1.35;
  word-break: break-word;
}

.oci-count {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.5em;
  padding: 0 6px;
  border-radius: 999px;
  background: #eef2f7;
  color: #596579;
  font-size: 0.78em;
  font-weight: 600;
}

.oci-empty,
.oci-index-notice {
  color: #667085;
  margin: 0;
}

@media (max-width: 1024px) {
  .oci-columns-4,
  .oci-columns-5 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .oci-columns-2,
  .oci-columns-3,
  .oci-columns-4,
  .oci-columns-5 {
    grid-template-columns: 1fr;
  }

  .oci-origin-block {
    padding: 14px;
  }

  .oci-character-item {
    font-size: 0.9rem;
  }
}

.oci-index-wrap {
  margin: 1.5em 0;
}

.oci-origin-toc {
  margin: 0 0 24px;
  padding: 16px 18px;
  border: 1px solid #e5e7eb;
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.oci-toc-title {
  margin: 0 0 12px;
  padding: 0 0 10px;
  border-bottom: 2px solid #f0f2f5;
  font-size: 1.05rem;
  line-height: 1.4;
  font-weight: 700;
}

.oci-toc-list {
  display: grid;
  gap: 8px 10px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.oci-toc-columns-1 .oci-toc-list { grid-template-columns: 1fr; }
.oci-toc-columns-2 .oci-toc-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.oci-toc-columns-3 .oci-toc-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.oci-toc-columns-4 .oci-toc-list { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.oci-toc-columns-5 .oci-toc-list { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.oci-toc-columns-6 .oci-toc-list { grid-template-columns: repeat(6, minmax(0, 1fr)); }

.oci-toc-item a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  min-height: 40px;
  padding: 8px 10px;
  border: 1px solid #edf0f3;
  border-radius: 10px;
  background: #f8fafc;
  color: inherit;
  line-height: 1.35;
  text-decoration: none;
}

.oci-toc-item a:hover {
  background: #f1f5f9;
  text-decoration: none;
}

.oci-toc-name {
  overflow-wrap: anywhere;
}

.oci-origin-block {
  scroll-margin-top: 90px;
}

@media (max-width: 1024px) {
  .oci-toc-columns-5 .oci-toc-list,
  .oci-toc-columns-6 .oci-toc-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .oci-origin-toc {
    padding: 14px;
  }

  .oci-toc-columns-2 .oci-toc-list,
  .oci-toc-columns-3 .oci-toc-list,
  .oci-toc-columns-4 .oci-toc-list,
  .oci-toc-columns-5 .oci-toc-list,
  .oci-toc-columns-6 .oci-toc-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 480px) {
  .oci-toc-columns-2 .oci-toc-list,
  .oci-toc-columns-3 .oci-toc-list,
  .oci-toc-columns-4 .oci-toc-list,
  .oci-toc-columns-5 .oci-toc-list,
  .oci-toc-columns-6 .oci-toc-list {
    grid-template-columns: 1fr;
  }
}