@charset "UTF-8";
/**
* rem変換 ※375以下ではvwとする
* $number 数値
* 例) 32pxをremに変換 (32);
*/
/* Article Detail Page Styles */
.article-header-section {
  padding: 120px 0 80px;
  background: linear-gradient(135deg, rgba(46, 129, 176, 0.08) 0%, rgba(255, 215, 0, 0.06) 100%);
  text-align: center;
}

.article-header-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

.article-meta {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  gap: 20px;
  margin-bottom: 2rem;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
}

.article-category .category-tag {
  background: rgba(46, 129, 176, 0.9);
  color: white;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 1.25rem;
  font-weight: 500;
}

.article-category .series-tag {
  background: rgba(34, 139, 34, 0.9);
  color: white;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 1.25rem;
  font-weight: 500;
}

.article-series-header {
  text-align: center;
  margin-bottom: 20px;
}
.article-series-header .series-tag {
  display: inline-block;
  background: rgba(34, 139, 34, 0.1);
  color: #228B22;
  padding: 10px 20px;
  border-radius: 25px;
  font-size: 1.25rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border: 1px solid rgba(34, 139, 34, 0.2);
}
.article-series-header .series-tag::before {
  content: "📚 ";
  margin-right: 5px;
}

.article-date {
  color: #666;
  font-size: 1.6rem;
}

.article-title {
  font-size: clamp(3.5rem, 5vw, 2rem);
  font-weight: 700;
  color: #0D1D3B;
  line-height: 1.2;
  margin-bottom: 2rem;
  -webkit-animation: fadeInUp 1s ease-out;
          animation: fadeInUp 1s ease-out;
}

.article-excerpt {
  color: #666;
  font-size: 1.6rem;
  line-height: 1.6;
  margin-bottom: 3rem;
  -webkit-animation: fadeInUp 1s ease-out 0.2s both;
          animation: fadeInUp 1s ease-out 0.2s both;
}

.article-author {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  gap: 15px;
  -webkit-animation: fadeInUp 1s ease-out 0.4s both;
          animation: fadeInUp 1s ease-out 0.4s both;
}

.author-avatar img {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  -o-object-fit: contain;
     object-fit: contain;
  background: white;
  -webkit-box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
          box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.author-info {
  text-align: left;
}
.author-info .author-name {
  display: block;
  font-weight: 600;
  color: #0D1D3B;
  font-size: 1.6rem;
}
.author-info .publish-date {
  color: #666;
  font-size: 1.6rem;
}

/* Article Content Section */
.article-content-section {
  background: #ffffff;
}

.article-content-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 60px;
}

.article-content .article-featured-image {
  margin-bottom: 2rem;
  border-radius: 20px;
  overflow: hidden;
  -webkit-box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
          box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}
.article-content .article-featured-image .featured-image {
  width: 100%;
  height: auto;
  display: block;
  max-height: 400px;
  -o-object-fit: cover;
     object-fit: cover;
}
.article-content .article-featured-image .default-image {
  background: #f8f9fa;
  padding: 2rem;
  -o-object-fit: contain;
     object-fit: contain;
}
.article-content .article-meta-info {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  margin-bottom: 1.5rem;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  gap: 1rem;
}
.article-content .article-meta-info .article-category .category-tag {
  background: linear-gradient(135deg, #2E81B0 0%, #4895EF 100%);
  color: white;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 1.25rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
  margin-right: 0.5rem;
}
.article-content .article-meta-info .article-category .category-tag:hover {
  -webkit-transform: translateY(-2px);
          transform: translateY(-2px);
  -webkit-box-shadow: 0 4px 15px rgba(46, 129, 176, 0.3);
          box-shadow: 0 4px 15px rgba(46, 129, 176, 0.3);
}
.article-content .article-meta-info .article-date {
  color: #666;
  font-size: 1.25rem;
  font-weight: 500;
}
.article-content .article-title {
  font-size: clamp(1.7rem, 4vw, 2rem);
  font-weight: 700;
  color: #0D1D3B;
  line-height: 1.3;
  margin-bottom: 2rem;
  border-bottom: 3px solid #2E81B0;
  padding-bottom: 1rem;
}
.article-content .article-body {
  color: #333;
  line-height: 1.6;
  font-size: 1.4rem;
}
.article-content .article-body h2, .article-content .article-body h3, .article-content .article-body h4, .article-content .article-body h5, .article-content .article-body h6 {
  color: #0D1D3B;
  margin: 1.5rem 0 0.8rem;
  font-weight: 600;
}
.article-content .article-body h2 {
  font-size: 1.7rem;
}
.article-content .article-body h3 {
  font-size: 1.6rem;
}
.article-content .article-body h4 {
  font-size: 1.5rem;
}
.article-content .article-body p {
  margin-bottom: 1rem;
}
.article-content .article-body ul, .article-content .article-body ol {
  margin-bottom: 1rem;
  padding-left: 1.5rem;
}
.article-content .article-body li {
  margin-bottom: 0.3rem;
}
.article-content .article-body blockquote {
  padding-left: 1rem;
  margin: 1.5rem 0;
  color: #666;
  padding: 1rem;
}
.article-content .article-body img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 1.5rem 0;
}
.article-content .article-body .acf-content {
  margin-bottom: 1.5rem;
}
.article-content .article-body .acf-content h2, .article-content .article-body .acf-content h3, .article-content .article-body .acf-content h4, .article-content .article-body .acf-content h5, .article-content .article-body .acf-content h6 {
  color: #0D1D3B;
  margin: 1rem 0 0.5rem;
  font-weight: 600;
}
.article-content .article-body .acf-content h2 {
  font-size: 1.6rem;
}
.article-content .article-body .acf-content h3 {
  font-size: 1.6rem;
}
.article-content .article-body .acf-content h4 {
  font-size: 1.5rem;
}
.article-content .article-body .acf-content p {
  margin-bottom: 1.2rem;
  color: #444;
}
.article-content .article-body .acf-content ul, .article-content .article-body .acf-content ol {
  margin-bottom: 1.2rem;
  padding-left: 1.5rem;
}
.article-content .article-body .acf-content li {
  margin-bottom: 0.4rem;
}
.article-content .article-body .acf-content blockquote {
  border-left: 4px solid #FFD700;
  background: rgba(255, 215, 0, 0.1);
  border-radius: 0 8px 8px 0;
}
.article-content .article-body .acf-content img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 1.5rem 0;
  -webkit-box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
          box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}
.article-content .article-body .acf-content pre {
  background: #2E81B0;
  color: white;
  padding: 1rem;
  border-radius: 8px;
  overflow-x: auto;
  margin: 1.5rem 0;
}
.article-content .article-body .acf-content pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}
.article-content .article-body .acf-content code {
  background: rgba(46, 129, 176, 0.1);
  color: #2E81B0;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-family: "Courier New", monospace;
}

.article-tags {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid #f0f0f0;
}
.article-tags h3 {
  color: #0D1D3B;
  margin-bottom: 1rem;
  font-size: 1.6rem;
}
.article-tags .tag-list {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
  gap: 10px;
}
.article-tags .tag-item {
  background: #f0f0f0;
  color: #666;
  padding: 6px 12px;
  border-radius: 15px;
  text-decoration: none;
  font-size: 1.25rem;
  -webkit-transition: all 0.3s ease;
  transition: all 0.3s ease;
}
.article-tags .tag-item:hover {
  background: #2E81B0;
  color: white;
  -webkit-transform: translateY(-2px);
          transform: translateY(-2px);
}

/* Article Sidebar */
.article-sidebar .author-profile, .article-sidebar .related-posts, .article-sidebar .category-list {
  background: white;
  border-radius: 20px;
  padding: 25px;
  margin-bottom: 30px;
  -webkit-box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
          box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}
.article-sidebar .author-profile h3, .article-sidebar .related-posts h3, .article-sidebar .category-list h3 {
  color: #0D1D3B;
  margin-bottom: 1.5rem;
  font-size: 1.6rem;
  font-weight: 600;
}

.author-profile .author-content {
  text-align: center;
}
.author-profile .author-content .author-avatar-sidebar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  -o-object-fit: contain;
     object-fit: contain;
  background: #f8f9fa;
  margin-bottom: 1rem;
}
.author-profile .author-content h4 {
  color: #0D1D3B;
  margin-bottom: 1rem;
  font-size: 1.6rem;
}
.author-profile .author-content p {
  color: #666;
  line-height: 1.6;
  font-size: 1.6rem;
}

.related-posts .related-post-item {
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid #f0f0f0;
}
.related-posts .related-post-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}
.related-posts .related-post-item a {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  gap: 15px;
  text-decoration: none;
  color: inherit;
  -webkit-transition: all 0.3s ease;
  transition: all 0.3s ease;
}
.related-posts .related-post-item a:hover {
  -webkit-transform: translateX(5px);
          transform: translateX(5px);
}
.related-posts .related-post-item .related-post-image {
  width: 60px;
  height: 60px;
  border-radius: 10px;
  overflow: hidden;
  -ms-flex-negative: 0;
      flex-shrink: 0;
}
.related-posts .related-post-item .related-post-image img {
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover;
}
.related-posts .related-post-item .related-post-info {
  -webkit-box-flex: 1;
      -ms-flex: 1;
          flex: 1;
  min-width: 0;
}
.related-posts .related-post-item .related-post-info h4 {
  color: #0D1D3B;
  font-size: 1.6rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-posts .related-post-item .related-post-info .related-post-date {
  color: #999;
  font-size: 1.5rem;
}

.category-list ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.category-list li {
  margin-bottom: 12px;
}
.category-list li a {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: justify;
      -ms-flex-pack: justify;
          justify-content: space-between;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  text-decoration: none;
  color: #666;
  padding: 8px 0;
  -webkit-transition: all 0.3s ease;
  transition: all 0.3s ease;
}
.category-list li a:hover {
  color: #2E81B0;
  -webkit-transform: translateX(5px);
          transform: translateX(5px);
}
.category-list li .category-name {
  font-weight: 500;
}
.category-list li .post-count {
  color: #999;
  font-size: 1.25rem;
}

/* Article Navigation - Clean Layout */
.article-navigation-section {
  padding: 60px 0 !important;
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%) !important;
}

.article-navigation-container {
  max-width: 1200px !important;
  margin: 0 auto !important;
  padding: 0 20px !important;
}

.navigation-header {
  text-align: center !important;
  margin-bottom: 30px !important;
}

.navigation-title {
  font-size: 24px !important;
  font-weight: 700 !important;
  color: #2c3e50 !important;
  margin-bottom: 8px !important;
  display: -webkit-box !important;
  display: -ms-flexbox !important;
  display: flex !important;
  -webkit-box-align: center !important;
      -ms-flex-align: center !important;
          align-items: center !important;
  -webkit-box-pack: center !important;
      -ms-flex-pack: center !important;
          justify-content: center !important;
  gap: 8px !important;
}

.navigation-title::before {
  content: "📄" !important;
  font-size: 20px !important;
}

.navigation-description {
  font-size: 14px !important;
  color: #666 !important;
  margin: 0 !important;
  font-style: italic !important;
}

.article-navigation-section .article-navigation-container .article-navigation {
  display: -webkit-box !important;
  display: -ms-flexbox !important;
  display: flex !important;
  -webkit-box-pack: justify !important;
      -ms-flex-pack: justify !important;
          justify-content: space-between !important;
  gap: 30px !important;
  -webkit-box-align: stretch !important;
      -ms-flex-align: stretch !important;
          align-items: stretch !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-previous,
.article-navigation-section .article-navigation-container .article-navigation .nav-next {
  -webkit-box-flex: 1 !important;
      -ms-flex: 1 !important;
          flex: 1 !important;
  max-width: 48% !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-link {
  display: -webkit-box !important;
  display: -ms-flexbox !important;
  display: flex !important;
  -webkit-box-align: center !important;
      -ms-flex-align: center !important;
          align-items: center !important;
  text-decoration: none !important;
  color: #333 !important;
  font-size: 20px !important;
  font-weight: bold !important;
  gap: 15px !important;
  background: white !important;
  padding: 20px 25px !important;
  border-radius: 12px !important;
  -webkit-box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1) !important;
          box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1) !important;
  width: 100% !important;
  height: auto !important;
  -webkit-transition: all 0.3s ease !important;
  transition: all 0.3s ease !important;
  border: 2px solid #e0e0e0 !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-link:hover {
  -webkit-transform: translateY(-3px) !important;
          transform: translateY(-3px) !important;
  -webkit-box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15) !important;
          box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15) !important;
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%) !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-previous .nav-link {
  -webkit-box-orient: horizontal !important;
  -webkit-box-direction: normal !important;
      -ms-flex-direction: row !important;
          flex-direction: row !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-next .nav-link {
  -webkit-box-orient: horizontal !important;
  -webkit-box-direction: reverse !important;
      -ms-flex-direction: row-reverse !important;
          flex-direction: row-reverse !important;
}

/* Force order for next navigation - more specific */
.article-navigation-section .article-navigation-container .article-navigation .nav-next .nav-link {
  display: -webkit-box !important;
  display: -ms-flexbox !important;
  display: flex !important;
  -webkit-box-orient: horizontal !important;
  -webkit-box-direction: normal !important;
      -ms-flex-direction: row !important;
          flex-direction: row !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-next .nav-link .nav-title {
  -webkit-box-ordinal-group: 2 !important;
      -ms-flex-order: 1 !important;
          order: 1 !important;
  -webkit-box-flex: 1 !important;
      -ms-flex: 1 !important;
          flex: 1 !important;
  text-align: right !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-next .nav-link .nav-image {
  -webkit-box-ordinal-group: 3 !important;
      -ms-flex-order: 2 !important;
          order: 2 !important;
  margin-right: 10px !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-next .nav-link .nav-arrow {
  -webkit-box-ordinal-group: 4 !important;
      -ms-flex-order: 3 !important;
          order: 3 !important;
  margin-left: 0 !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-image {
  width: 60px !important;
  height: 60px !important;
  border-radius: 10px !important;
  overflow: hidden !important;
  -ms-flex-negative: 0 !important;
      flex-shrink: 0 !important;
  -webkit-box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1) !important;
          box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1) !important;
  -webkit-transition: all 0.3s ease !important;
  transition: all 0.3s ease !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-link:hover .nav-image {
  -webkit-transform: scale(1.05) !important;
          transform: scale(1.05) !important;
  -webkit-box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15) !important;
          box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15) !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-image img {
  width: 100% !important;
  height: 100% !important;
  -o-object-fit: cover !important;
     object-fit: cover !important;
  -webkit-transition: -webkit-transform 0.3s ease !important;
  transition: -webkit-transform 0.3s ease !important;
  transition: transform 0.3s ease !important;
  transition: transform 0.3s ease, -webkit-transform 0.3s ease !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-link:hover .nav-image img {
  -webkit-transform: scale(1.1) !important;
          transform: scale(1.1) !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-content {
  -webkit-box-flex: 1 !important;
      -ms-flex: 1 !important;
          flex: 1 !important;
  display: -webkit-box !important;
  display: -ms-flexbox !important;
  display: flex !important;
  -webkit-box-orient: vertical !important;
  -webkit-box-direction: normal !important;
      -ms-flex-direction: column !important;
          flex-direction: column !important;
  gap: 4px !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-date {
  font-size: 12px !important;
  font-weight: 500 !important;
  color: #999 !important;
  line-height: 1 !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-next .nav-date {
  text-align: right !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-title {
  font-size: 15px !important;
  font-weight: 600 !important;
  color: #2c3e50 !important;
  line-height: 1.4 !important;
  -webkit-transition: color 0.3s ease !important;
  transition: color 0.3s ease !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-link:hover .nav-title {
  color: #1a252f !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-arrow {
  position: relative !important;
  display: inline-block !important;
  width: 20px !important;
  height: 20px !important;
  -ms-flex-negative: 0 !important;
      flex-shrink: 0 !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-arrow::before,
.article-navigation-section .article-navigation-container .article-navigation .nav-arrow::after {
  content: "" !important;
  position: absolute !important;
  background: #2E81B0 !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-previous .nav-arrow::before {
  width: 27px !important;
  height: 2px !important;
  top: 9px !important;
  left: 4px !important;
  -webkit-transform: rotate(-45deg) !important;
          transform: rotate(-45deg) !important;
  -webkit-transform-origin: left center !important;
          transform-origin: left center !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-previous .nav-arrow::after {
  width: 27px !important;
  height: 2px !important;
  top: 9px !important;
  left: 4px !important;
  -webkit-transform: rotate(45deg) !important;
          transform: rotate(45deg) !important;
  -webkit-transform-origin: left center !important;
          transform-origin: left center !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-next .nav-arrow::before {
  width: 27px !important;
  height: 2px !important;
  top: 9px !important;
  right: 4px !important;
  -webkit-transform: rotate(45deg) !important;
          transform: rotate(45deg) !important;
  -webkit-transform-origin: right center !important;
          transform-origin: right center !important;
}

.article-navigation-section .article-navigation-container .article-navigation .nav-next .nav-arrow::after {
  width: 27px !important;
  height: 2px !important;
  top: 9px !important;
  right: 4px !important;
  -webkit-transform: rotate(-45deg) !important;
          transform: rotate(-45deg) !important;
  -webkit-transform-origin: right center !important;
          transform-origin: right center !important;
}

@media (max-width: 768px) {
  .article-content-container {
    grid-template-columns: 1fr !important;
    gap: 40px !important;
  }
  .article-navigation-section {
    padding: 40px 0 !important;
  }
  .article-navigation-section .article-navigation-container .article-navigation {
    -webkit-box-orient: vertical !important;
    -webkit-box-direction: normal !important;
        -ms-flex-direction: column !important;
            flex-direction: column !important;
    gap: 20px !important;
  }
  .article-navigation-section .article-navigation-container .article-navigation .nav-previous,
  .article-navigation-section .article-navigation-container .article-navigation .nav-next {
    max-width: 100% !important;
  }
  .article-navigation-section .article-navigation-container .article-navigation .nav-link {
    padding: 15px 20px !important;
    gap: 12px !important;
  }
  .article-navigation-section .article-navigation-container .article-navigation .nav-image {
    width: 50px !important;
    height: 50px !important;
  }
  .article-navigation-section .article-navigation-container .article-navigation .nav-title {
    font-size: 14px !important;
  }
  .article-navigation-section .article-navigation-container .article-navigation .nav-arrow {
    font-size: 20px !important;
  }
}
.article-navigation .nav-title {
  font-size: 16px;
  font-weight: normal;
  color: #333;
}

/* シリーズ関連記事 */
.related-posts .series-description {
  font-size: 14px;
  color: #666;
  margin-bottom: 20px;
  font-style: italic;
}
.related-posts .series-posts-container {
  max-height: 400px;
  overflow-y: auto;
  /* スクロールバーのスタイリング */
}
.related-posts .series-posts-container::-webkit-scrollbar {
  width: 6px;
}
.related-posts .series-posts-container::-webkit-scrollbar-track {
  background: #f1f1f1;
  border-radius: 3px;
}
.related-posts .series-posts-container::-webkit-scrollbar-thumb {
  background: #c1c1c1;
  border-radius: 3px;
}
.related-posts .series-posts-container::-webkit-scrollbar-thumb:hover {
  background: #a8a8a8;
}
.related-posts .related-post-item {
  position: relative;
  margin-bottom: 15px;
  padding: 12px;
  border-radius: 8px;
}
.related-posts .related-post-item.current-post {
  background: rgba(34, 139, 34, 0.1);
  border: 1px solid rgba(34, 139, 34, 0.2);
}
.related-posts .related-post-item a {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  gap: 12px;
  text-decoration: none;
}
.related-posts .related-post-item .related-post-info {
  -webkit-box-flex: 1;
      -ms-flex: 1;
          flex: 1;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  gap: 4px;
}
.related-posts .related-post-item .related-post-info .related-post-date {
  font-size: 11px;
  color: #999;
  font-weight: 500;
  line-height: 1;
}
.related-posts .related-post-item .related-post-info h4 {
  font-size: 16px;
  font-weight: 600;
  color: #333;
  line-height: 1.3;
  margin: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 20ch;
}
.related-posts .related-post-item .related-post-info .related-post-likes {
  font-size: 11px;
  color: #e74c3c;
  font-weight: 500;
  line-height: 1;
}
.related-posts h3 {
  color: #228B22;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}
.related-posts h3::before {
  content: "📚 ";
  margin-right: 5px;
}

/* Series Navigation */
.series-navigation {
  margin: 40px 0;
  text-align: center;
  background: linear-gradient(135deg, rgba(34, 139, 34, 0.05) 0%, rgba(46, 129, 176, 0.05) 100%);
  border-radius: 20px;
  padding: 30px 20px;
  border: 1px solid rgba(34, 139, 34, 0.1);
}
.series-navigation .series-header {
  margin-bottom: 25px;
}
.series-navigation .series-header .series-title {
  color: #228B22;
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 8px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  gap: 8px;
}
.series-navigation .series-header .series-subtitle {
  color: #666;
  font-size: 1.25rem;
  margin: 0;
  font-style: italic;
}
.series-navigation .nav-buttons {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  gap: 12px;
  -ms-flex-wrap: wrap;
      flex-wrap: wrap;
}
.series-navigation .nav-btn {
  display: inline-block;
  padding: 12px 20px;
  background: #2E81B0;
  color: white;
  text-decoration: none;
  border-radius: 8px;
  font-size: 1.4rem;
  font-weight: 500;
  -webkit-transition: all 0.3s ease;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
}
.series-navigation .nav-btn:hover {
  background: #1e5f8a;
  -webkit-transform: translateY(-2px);
          transform: translateY(-2px);
  -webkit-box-shadow: 0 4px 12px rgba(46, 129, 176, 0.3);
          box-shadow: 0 4px 12px rgba(46, 129, 176, 0.3);
}
.series-navigation .nav-btn.first, .series-navigation .nav-btn.last {
  background: #666;
  padding: 10px 16px;
  font-size: 1.25rem;
}
.series-navigation .nav-btn.first:hover, .series-navigation .nav-btn.last:hover {
  background: #555;
  -webkit-box-shadow: 0 4px 12px rgba(102, 102, 102, 0.3);
          box-shadow: 0 4px 12px rgba(102, 102, 102, 0.3);
}
.series-navigation .nav-btn.disabled {
  background: #e0e0e0;
  color: #999;
  cursor: not-allowed;
}
.series-navigation .nav-btn.disabled:hover {
  background: #e0e0e0;
  -webkit-transform: none;
          transform: none;
  -webkit-box-shadow: none;
          box-shadow: none;
}
.series-navigation .page-info {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  padding: 15px 20px;
  background: white;
  color: #0D1D3B;
  border-radius: 12px;
  border: 2px solid #228B22;
  margin: 0 10px;
  -webkit-box-shadow: 0 4px 12px rgba(34, 139, 34, 0.1);
          box-shadow: 0 4px 12px rgba(34, 139, 34, 0.1);
}
.series-navigation .page-info .page-number {
  font-size: 1.5rem;
  font-weight: 700;
  color: #228B22;
  line-height: 1;
}
.series-navigation .page-info .page-label {
  font-size: 1.25rem;
  color: #666;
  margin-top: 4px;
  font-weight: 500;
}
@media (max-width: 768px) {
  .series-navigation {
    margin: 30px 0;
    padding: 20px 15px;
  }
  .series-navigation .series-header {
    margin-bottom: 20px;
  }
  .series-navigation .series-header .series-title {
    font-size: 1.4rem;
  }
  .series-navigation .series-header .series-subtitle {
    font-size: 1rem;
  }
  .series-navigation .nav-buttons {
    gap: 6px;
    -ms-flex-wrap: nowrap;
        flex-wrap: nowrap; /* 折り返さない */
    overflow: visible; /* 横スクロールを出さない */
  }
  .series-navigation .nav-btn {
    padding: 6px 10px;
    font-size: 12px;
    line-height: 1;
    -webkit-box-flex: 0;
        -ms-flex: 0 0 auto;
            flex: 0 0 auto;
    white-space: nowrap;
  }
  .series-navigation .nav-btn.first, .series-navigation .nav-btn.last {
    padding: 4px 8px;
    font-size: 11px;
  }
  .series-navigation .page-info {
    padding: 6px 8px;
    margin: 0 4px;
    -webkit-box-flex: 0;
        -ms-flex: 0 0 auto;
            flex: 0 0 auto;
    white-space: nowrap;
  }
  .series-navigation .page-info .page-number {
    font-size: 14px;
  }
  .series-navigation .page-info .page-label {
    font-size: 10px;
  }
}/*# sourceMappingURL=single-blog.css.map */