@charset "UTF-8";
body {
  font-family: "Zen Maru Gothic", sans-serif !important;
  font-weight: 400;
  font-style: normal;
}

/* ══════════════════════════════════════════════════════════════
   Article List（一覧ページ）
   ══════════════════════════════════════════════════════════════ */
.article-list-wrapper {
  margin-top: 3rem;
}
.article-list-wrapper .article-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}
@media (max-width: 768px) {
  .article-list-wrapper .article-list {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}
.article-list-wrapper .article-list-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.article-list-wrapper .article-list-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}
.article-list-wrapper .article-list-card .card-link {
  display: flex;
  flex-direction: column;
  height: 100%;
  text-decoration: none;
  color: inherit;
  vertical-align: top;
  line-height: 0;
  font-size: 0;
}
.article-list-wrapper .article-list-card .card-img {
  width: 100%;
  height: 200px;
  -o-object-fit: cover;
     object-fit: cover;
  border-bottom: 1px solid #eee;
  display: block;
  margin: 0;
  padding: 0;
  line-height: 0;
}
.article-list-wrapper .article-list-card .card-body {
  padding: 1rem 1.5rem 1.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
  line-height: normal;
  font-size: 1rem;
}
.article-list-wrapper .article-list-card .card-body .card-title {
  font-size: 1.1rem !important;
  font-weight: bold;
  color: #333;
  margin-top: 0 !important;
  margin-bottom: 0.5rem !important;
  padding-top: 0 !important;
  padding-bottom: 0 !important;
  border-bottom: none !important;
  min-height: 3.08rem;
  max-height: 3.08rem;
  line-height: 1.4 !important;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
}
.article-list-wrapper .article-list-card .card-body .card-date {
  font-size: 0.85rem;
  color: #888;
  margin-bottom: 0.75rem;
}
.article-list-wrapper .article-list-card .card-body .card-category {
  display: block;
  background: #e3f2fd;
  color: #1976d2;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 500;
  margin: 0 auto 1rem auto;
  width: -moz-fit-content;
  width: fit-content;
}
.article-list-wrapper .article-list-card .card-body .card-excerpt {
  font-size: 0.9rem;
  color: #666;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex: 1;
}

.card-body h5.card-title,
.article-list-card h5.card-title {
  margin: 0 0 0.5rem 0 !important;
  padding: 0 !important;
  border-bottom: none !important;
}

.article-count-display {
  text-align: center;
  margin-bottom: 2rem;
}
.article-count-display .article-count-text {
  font-size: 1.1rem;
  color: #555;
}
.article-count-display .article-count-text .pink {
  color: #e91e63;
  font-weight: bold;
}

/* ══════════════════════════════════════════════════════════════
   Key Visual
   ══════════════════════════════════════════════════════════════ */
.kv-article {
  margin: 0;
  padding: 0;
}
.kv-article .kv-image-container {
  position: relative;
  width: 100%;
  height: 300px;
  overflow: hidden;
}
.kv-article .kv-image-container .kv-image {
  width: 100%;
  height: 100%;
  -o-object-fit: cover;
     object-fit: cover;
  -o-object-position: center;
     object-position: center;
}
.kv-article .kv-image-container .kv-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.6));
}
.kv-article .kv-image-container .kv-text {
  position: absolute;
  bottom: 30px;
  right: 40px;
  color: white;
  text-align: right;
}
.kv-article .kv-image-container .kv-text .article-subtitle {
  font-size: 1rem;
  margin-bottom: 10px;
  font-weight: 500;
  color: #F9F9F9;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
}
.kv-article .kv-image-container .kv-text .article-title {
  font-size: 1.8rem;
  font-weight: 700;
  line-height: 1.4;
  margin: 0;
  color: #F9F9F9;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
  text-align: right !important;
  border-bottom: none !important;
}
@media (max-width: 768px) {
  .kv-article .kv-image-container {
    height: 250px;
  }
  .kv-article .kv-image-container .kv-text {
    bottom: 20px;
    right: 20px;
    left: 20px;
  }
  .kv-article .kv-image-container .kv-text .article-subtitle {
    font-size: 0.9rem;
  }
  .kv-article .kv-image-container .kv-text .article-title {
    font-size: 1.4rem;
  }
}
@media (max-width: 480px) {
  .kv-article .kv-image-container {
    height: 200px;
  }
  .kv-article .kv-image-container .kv-text .article-title {
    font-size: 1.2rem;
  }
}

.breadcrumb {
  display: flex;
  justify-content: center;
  padding: 1rem 0;
  font-size: 0.875rem;
  color: #6c757d;
}
.breadcrumb .separator {
  margin: 0 0.5rem;
  transform: translateY(-1px);
}

.article main {
  max-width: 1024px;
  margin: 0 auto;
}
.article main .lead {
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  padding: 30px 40px;
  margin: 40px 0;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  font-weight: 400;
  font-size: 1rem !important;
}
.article main .lead p {
  font-size: 1.05rem;
  line-height: 1.8;
  color: #333;
  margin-bottom: 1.2rem;
}
.article main .lead p:last-child {
  margin-bottom: 0;
}
@media (max-width: 768px) {
  .article main .lead {
    padding: 25px 30px;
    margin: 30px 0;
    border-left-width: 3px;
  }
  .article main .lead p {
    font-size: 1rem;
    line-height: 1.75;
    margin-bottom: 1rem;
  }
}
@media (max-width: 480px) {
  .article main .lead {
    padding: 20px 20px;
    margin: 20px 0;
  }
  .article main .lead p {
    font-size: 0.95rem;
    line-height: 1.7;
  }
}

.article .toc {
  background: #fff;
  border: 2px solid #e9ecef;
  border-radius: 8px;
  padding: 30px;
  max-width: 600px;
  margin: 20px auto;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
}
.article .toc h4 {
  font-size: 1.3rem;
  font-weight: 700;
  color: #333;
  margin: 0 0 20px 0;
  padding-bottom: 15px;
  border-bottom: 2px solid #0878cf;
  border-left: none !important;
  background: none !important;
  display: inline-block;
}
.article .toc .toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.article .toc .toc-list li {
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  transition: transform 0.2s ease;
}
.article .toc .toc-list li:hover {
  transform: translateX(5px);
}
.article .toc .toc-list li:last-child {
  margin-bottom: 0;
}
.article .toc .toc-list li .toc-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #0878cf 0%, #043F6D 100%);
  color: white;
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 6px;
  margin-right: 15px;
  flex-shrink: 0;
}
.article .toc .toc-list li .toc-link {
  color: #333;
  text-decoration: none;
  font-size: 1.05rem;
  font-weight: 500;
  line-height: 1.5;
  transition: color 0.2s ease;
  flex: 1;
}
.article .toc .toc-list li .toc-link:hover {
  color: #0878cf;
}
@media (max-width: 768px) {
  .article .toc {
    padding: 25px 20px;
    margin: 30px 0;
  }
  .article .toc h4 {
    font-size: 1.2rem;
    margin-bottom: 18px;
    padding-bottom: 12px;
  }
  .article .toc .toc-list li {
    margin-bottom: 10px;
  }
  .article .toc .toc-list li .toc-number {
    min-width: 36px;
    height: 36px;
    font-size: 0.85rem;
    margin-right: 12px;
  }
  .article .toc .toc-list li .toc-link {
    font-size: 1rem;
  }
}
@media (max-width: 480px) {
  .article .toc {
    padding: 20px 15px;
    margin: 25px 0;
  }
  .article .toc h4 {
    font-size: 1.1rem;
  }
  .article .toc .toc-list li .toc-number {
    min-width: 32px;
    height: 32px;
    font-size: 0.8rem;
    margin-right: 10px;
  }
  .article .toc .toc-list li .toc-link {
    font-size: 0.95rem;
  }
}

.article main h2 {
  font-size: 1.8rem;
  font-weight: 700;
  color: #222;
  margin: 60px 0 30px 0;
  padding: 0 0 15px 0;
  border-bottom: 3px solid #0878cf;
  line-height: 1.4;
  position: relative;
}
.article main h2::before {
  content: "";
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 80px;
  height: 3px;
  background: #0878cf;
}
.article main h2:first-of-type {
  margin-top: 40px;
}
.article main h3 {
  font-size: 1.4rem;
  font-weight: 700;
  color: #043F6D;
  margin: 45px 0 20px 0;
  padding-left: 15px;
  border-left: 5px solid #043F6D;
  line-height: 1.4;
}
.article main h4 {
  font-size: 1.2rem;
  font-weight: 700;
  color: #444;
  margin: 35px 0 18px 0;
  padding: 10px 15px;
  background: linear-gradient(to right, #f8f9fa 0%, transparent 100%);
  border-left: 5px double #1493f6;
  line-height: 1.4;
}
.article main h5 {
  font-size: 1.1rem;
  font-weight: 700;
  color: #555;
  margin: 30px 0 15px 0;
  padding-bottom: 8px;
  border-bottom: 2px dotted #dee2e6;
  line-height: 1.4;
}
.article main h6 {
  font-size: 1rem;
  font-weight: 700;
  color: #666;
  margin: 25px 0 12px 0;
  line-height: 1.4;
}
.article main p {
  font-size: 1rem;
  line-height: 1.8;
  color: #444;
  margin-bottom: 1.5rem;
}
.article main p:last-child {
  margin-bottom: 0;
}
@media (max-width: 768px) {
  .article main h2 {
    font-size: 1.5rem;
    margin: 50px 0 25px 0;
    padding-bottom: 12px;
  }
  .article main h2::before {
    width: 60px;
  }
  .article main h2:first-of-type {
    margin-top: 30px;
  }
  .article main h3 {
    font-size: 1.25rem;
    margin: 40px 0 18px 0;
    padding-left: 12px;
  }
  .article main h4 {
    font-size: 1.1rem;
    margin: 30px 0 15px 0;
    padding: 8px 12px;
  }
  .article main h5 {
    font-size: 1.05rem;
    margin: 25px 0 12px 0;
  }
  .article main h6 {
    font-size: 0.95rem;
    margin: 20px 0 10px 0;
  }
  .article main p {
    font-size: 0.95rem;
    line-height: 1.75;
  }
}
@media (max-width: 480px) {
  .article main h2 {
    font-size: 1.3rem;
    margin: 40px 0 20px 0;
    padding-bottom: 10px;
  }
  .article main h2::before {
    width: 50px;
  }
  .article main h3 {
    font-size: 1.15rem;
    margin: 35px 0 15px 0;
    padding-left: 10px;
  }
  .article main h4 {
    font-size: 1.05rem;
    padding: 8px 10px;
  }
  .article main h5 {
    font-size: 1rem;
  }
  .article main h6 {
    font-size: 0.9rem;
  }
  .article main p {
    font-size: 0.9rem;
    line-height: 1.7;
  }
}

.alert-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 18px 0;
  padding-bottom: 2px;
  border-bottom: 2px dotted;
  opacity: 0.8;
  display: inline-block;
}

.author-section h3 {
  padding-left: 0 !important;
}

/* ══════════════════════════════════════════════════════════════
   COMMON ARTICLE COMPONENTS
   ══════════════════════════════════════════════════════════════ */
.article-title {
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  line-height: 1.3;
  text-align: center;
  color: #35393C;
  border-bottom: 3px solid #46A2DA;
  padding-bottom: 15px;
}
@media (max-width: 768px) {
  .article-title {
    font-size: 1.8rem;
    margin-bottom: 1rem;
  }
}
@media (max-width: 576px) {
  .article-title {
    font-size: 1.5rem;
  }
}

.article-h2 {
  font-size: 1.8rem;
  font-weight: 600;
  color: #065b9e;
  margin: 1rem 0 2rem 0;
  line-height: 1.4;
  border-bottom: 2px solid #c6e2f4;
  padding-bottom: 0.5rem;
}
@media (max-width: 768px) {
  .article-h2 {
    font-size: 1.5rem;
  }
}
@media (max-width: 576px) {
  .article-h2 {
    font-size: 1.3rem;
  }
}

.article-section-title {
  font-size: 1.6rem;
  font-weight: 600;
  color: #043F6D;
  margin: 1.8rem 0 1rem 0;
  line-height: 1.4;
  position: relative;
  padding: 1rem 1.5rem;
  background: linear-gradient(135deg, rgba(70, 162, 218, 0.08), rgba(70, 162, 218, 0.04));
  border-radius: 12px;
  border: 1px solid rgba(70, 162, 218, 0.2);
  box-shadow: 0 2px 8px rgba(70, 162, 218, 0.1);
  transition: all 0.3s ease;
}
.article-section-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(135deg, #46A2DA, #065b9e);
  border-radius: 12px 0 0 12px;
}
.article-section-title:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(70, 162, 218, 0.15);
  background: linear-gradient(135deg, rgba(70, 162, 218, 0.12), rgba(70, 162, 218, 0.06));
}
@media (max-width: 768px) {
  .article-section-title {
    font-size: 1.4rem;
    margin: 1.4rem 0 0.8rem 0;
    padding: 0.8rem 1.2rem;
  }
}
@media (max-width: 576px) {
  .article-section-title {
    font-size: 1.2rem;
    padding: 0.7rem 1rem;
  }
}

.article-h3 {
  font-size: 1.4rem;
  font-weight: 600;
  color: #043F6D;
  margin: 2rem 0;
  line-height: 1.4;
}
@media (max-width: 768px) {
  .article-h3 {
    font-size: 1.2rem;
  }
}

.article-h4 {
  font-size: 1.2rem;
  font-weight: 600;
  color: #065b9e;
  margin: 2rem 0;
  padding-bottom: 0.5rem;
  line-height: 1.4;
  border-bottom: 1px solid #065b9e;
}
.article-h4::before {
  content: "\f192";
  font-family: "Font Awesome 7 Pro";
  font-weight: 900;
  color: #065b9e;
  margin-right: 0.5rem;
}
@media (max-width: 768px) {
  .article-h4 {
    font-size: 1.1rem;
  }
}

.article-h5 {
  font-size: 1.2rem;
}

.article-text {
  font-size: 1rem;
  line-height: 1.7;
  color: #35393C;
  margin-bottom: 1rem;
}
@media (max-width: 576px) {
  .article-text {
    font-size: 0.95rem;
    line-height: 1.6;
  }
}

.article-lead {
  background: linear-gradient(135deg, #043F6D 0%, #71b7e3 100%);
  color: #ffffff;
  padding: 25px;
  border-radius: 12px;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
  line-height: 1.6;
}
.article-lead a {
  color: #ffffff;
  text-decoration: none;
}
.article-lead a:hover {
  color: #ffffff !important;
  text-decoration: underline !important;
}

.task-section {
  border-left: 4px solid #46A2DA;
  background: hsl(203, 66.7%, 95%);
  padding: 0.75rem 1.5rem;
  margin: 1rem 0;
  font-weight: 600;
  line-height: 1.5;
}
.task-section .ja {
  font-weight: 400;
}

/* ──────────────────────────
   Buttons & Links
   ────────────────────────── */
.btn-primary {
  background: linear-gradient(135deg, #46A2DA, #065b9e);
  color: #ffffff !important;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 25px;
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s ease;
  box-shadow: 0 2px 10px rgba(70, 162, 218, 0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(70, 162, 218, 0.4);
  color: #ffffff !important;
  text-decoration: none;
}
.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: linear-gradient(135deg, #F5A100, #c27f00);
  color: #ffffff !important;
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 25px;
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s ease;
  box-shadow: 0 2px 10px rgba(245, 161, 0, 0.3);
}
.btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(245, 161, 0, 0.4);
  color: #ffffff !important;
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  color: #043F6D !important;
  border: 2px solid #043F6D;
  padding: 0.6rem 1.4rem;
  border-radius: 25px;
  font-weight: 600;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s ease;
}
.btn-outline:hover {
  background: #043F6D;
  color: #ffffff !important;
  text-decoration: none;
}

.link-primary {
  color: #46A2DA !important;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s ease;
}
.link-primary:hover {
  color: #043F6D;
  text-decoration: underline;
}

/* ──────────────────────────
   Content Boxes - 左帯を削除し、より洗練されたデザインに
   ────────────────────────── */
.info-box {
  background: #f8f9fa;
  border: 2px solid #dee2e6;
  border-radius: 8px;
  margin-bottom: 30px;
  overflow: hidden;
}
.info-box .info-title {
  background: #e9ecef;
  padding: 15px 20px;
  margin: 0;
  font-size: 1.2em;
  color: #495057;
  border-bottom: 1px solid #dee2e6;
}
.info-box .info-content {
  padding: 20px;
}

.warning-box {
  background: linear-gradient(135deg, rgba(245, 161, 0, 0.08), rgba(245, 161, 0, 0.04));
  border: 1px solid rgba(245, 161, 0, 0.25);
  border-radius: 12px;
  padding: 1.5rem;
  margin: 1.5rem 0;
  position: relative;
  box-shadow: 0 2px 8px rgba(245, 161, 0, 0.08);
}
.warning-box .warning-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #c27f00;
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
}
.warning-box .warning-title i {
  margin-right: 0.5rem;
  color: #F5A100;
  font-size: 1.1rem;
}
.warning-box .warning-content {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #4d5357;
}

.success-box {
  background: linear-gradient(135deg, rgba(40, 167, 69, 0.08), rgba(40, 167, 69, 0.04));
  border: 1px solid rgba(40, 167, 69, 0.25);
  border-radius: 12px;
  padding: 1.5rem;
  margin: 1.5rem 0;
  position: relative;
  box-shadow: 0 2px 8px rgba(40, 167, 69, 0.08);
}
.success-box .success-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #1e7e34;
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
}
.success-box .success-title i {
  margin-right: 0.5rem;
  color: #28a745;
  font-size: 1.1rem;
}
.success-box .success-content {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #4d5357;
}

.alert-box {
  background: linear-gradient(135deg, rgba(235, 72, 120, 0.08), rgba(235, 72, 120, 0.04));
  border: 1px solid rgba(235, 72, 120, 0.25);
  border-radius: 12px;
  padding: 1.5rem;
  margin: 1.5rem 0;
  position: relative;
  box-shadow: 0 2px 8px rgba(235, 72, 120, 0.08);
}
.alert-box .alert-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #e61a56;
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
}
.alert-box .alert-title i {
  margin-right: 0.5rem;
  color: #EB4878;
  font-size: 1.1rem;
}
.alert-box .alert-content {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #4d5357;
}

.tip-box {
  background: linear-gradient(135deg, rgba(235, 72, 120, 0.08), rgba(235, 72, 120, 0.04));
  border: 1px solid rgba(235, 72, 120, 0.25);
  border-radius: 12px;
  padding: 1.5rem;
  margin: 1.5rem 0;
  position: relative;
  box-shadow: 0 2px 8px rgba(235, 72, 120, 0.08);
}
.tip-box .tip-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #e61a56;
  margin-bottom: 0.8rem;
  display: flex;
  align-items: center;
}
.tip-box .tip-title i {
  margin-right: 0.5rem;
  color: #EB4878;
  font-size: 1.1rem;
}
.tip-box .tip-content {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #4d5357;
}

/* ──────────────────────────
   Tables
   ────────────────────────── */
.article-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  background: #ffffff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(53, 57, 60, 0.08);
  border: 1px solid rgba(93, 96, 98, 0.15);
}
.article-table thead {
  background: linear-gradient(135deg, #043F6D, #065b9e);
}
.article-table thead th {
  color: #ffffff;
  font-weight: 600;
  padding: 1rem;
  text-align: left;
  font-size: 0.95rem;
  border: none;
}
.article-table tbody tr {
  transition: background-color 0.3s ease;
}
.article-table tbody tr:nth-child(even) {
  background: rgba(93, 96, 98, 0.03);
}
.article-table tbody tr:hover {
  background: rgba(70, 162, 218, 0.08);
}
.article-table tbody td {
  padding: 0.8rem 1rem;
  border-bottom: 1px solid rgba(93, 96, 98, 0.1);
  font-size: 0.9rem;
  color: #35393C;
  vertical-align: top;
}
@media (max-width: 768px) {
  .article-table {
    font-size: 0.8rem;
  }
  .article-table th,
  .article-table td {
    padding: 0.6rem 0.8rem;
  }
}

.comparison-table .highlight-col {
  background: rgba(70, 162, 218, 0.12) !important;
}
.comparison-table .highlight-col:hover {
  background: rgba(70, 162, 218, 0.18) !important;
}

/* ──────────────────────────
   Lists - 左帯をアイコンに統一
   ────────────────────────── */
.article-list {
  margin: 1rem 0;
  padding-left: 0;
  list-style: none;
}

.checklist {
  margin: 1rem 0;
  padding-left: 0;
  list-style: none;
}
.checklist li {
  position: relative;
  padding: 0.5rem 0 0.5rem 1.4rem;
  margin-bottom: 0.5rem;
  font-size: 1rem;
  line-height: 1.6;
  color: #35393C;
}
.checklist li:before {
  content: "\f00c";
  font-family: "Font Awesome 6 Pro";
  font-weight: 900;
  position: absolute;
  left: 0;
  top: 0.6rem;
  color: #28a745;
  font-size: 0.9rem;
}

/* ──────────────────────────
   Layout Utilities
   ────────────────────────── */
.article-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem 1rem;
}
@media (max-width: 768px) {
  .article-container {
    padding: 1.5rem 1rem;
  }
}
@media (max-width: 576px) {
  .article-container {
    padding: 1rem 0.5rem;
  }
}

.content-section {
  margin: 2rem 0;
  padding: 1.5rem;
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(53, 57, 60, 0.06);
  border: 1px solid rgba(93, 96, 98, 0.08);
}
@media (max-width: 768px) {
  .content-section {
    margin: 1.5rem 0;
    padding: 1rem;
  }
}

.two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin: 1.5rem 0;
}
@media (max-width: 768px) {
  .two-column {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}

.highlight {
  background: rgba(235, 72, 120, 0.15);
  padding: 2px 4px;
  border-radius: 3px;
  border-bottom: 2px solid #EB4878;
  font-weight: 400 !important;
}

.highlight-text {
  background: linear-gradient(135deg, rgba(245, 161, 0, 0.15), rgba(245, 161, 0, 0.08));
  color: #c27f00;
  padding: 0.2rem 0.5rem;
  margin: 0 4px;
  border-radius: 4px;
  font-weight: 500;
  border: 1px solid rgba(245, 161, 0, 0.2);
}

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.mb-1 {
  margin-bottom: 0.5rem;
}

.mb-2 {
  margin-bottom: 1rem;
}

.mb-3 {
  margin-bottom: 1.5rem;
}

.mb-4 {
  margin-bottom: 2rem;
}

.mt-1 {
  margin-top: 0.5rem;
}

.mt-2 {
  margin-top: 1rem;
}

.mt-3 {
  margin-top: 1.5rem;
}

.mt-4 {
  margin-top: 2rem;
}

/* ──────────────────────────
   Images & Media
   ────────────────────────── */
.article-image {
  width: 100%;
  height: auto;
  border-radius: 12px;
  margin: 1.5rem 0;
  box-shadow: 0 6px 20px rgba(53, 57, 60, 0.1);
}

.image-caption {
  text-align: center;
  font-size: 0.85rem;
  color: #767a7c;
  font-style: italic;
  margin-top: 0.5rem;
  margin-bottom: 1.5rem;
}

.image-left {
  float: left;
  margin: 0 1.5rem 1rem 0;
  max-width: 300px;
}
@media (max-width: 768px) {
  .image-left {
    float: none;
    margin: 1rem 0;
    max-width: 100%;
  }
}

.image-right {
  float: right;
  margin: 0 0 1rem 1.5rem;
  max-width: 300px;
}
@media (max-width: 768px) {
  .image-right {
    float: none;
    margin: 1rem 0;
    max-width: 100%;
  }
}

/* ──────────────────────────
   Forms & Interactive Elements
   ────────────────────────── */
.article-form {
  background: #ffffff;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 6px 20px rgba(53, 57, 60, 0.08);
  margin: 2rem 0;
  border: 1px solid rgba(93, 96, 98, 0.1);
}
.article-form .form-group {
  margin-bottom: 1.5rem;
}
.article-form .form-group label {
  display: block;
  font-weight: 600;
  color: #043F6D;
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}
.article-form .form-group input[type=text],
.article-form .form-group input[type=email],
.article-form .form-group textarea,
.article-form .form-group select {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 2px solid rgba(93, 96, 98, 0.2);
  border-radius: 8px;
  font-size: 1rem;
  transition: all 0.3s ease;
  background: #ffffff;
}
.article-form .form-group input[type=text]:focus,
.article-form .form-group input[type=email]:focus,
.article-form .form-group textarea:focus,
.article-form .form-group select:focus {
  outline: none;
  border-color: #46A2DA;
  box-shadow: 0 0 0 3px rgba(70, 162, 218, 0.1);
}
.article-form .form-group input[type=text]::-moz-placeholder, .article-form .form-group input[type=email]::-moz-placeholder, .article-form .form-group textarea::-moz-placeholder, .article-form .form-group select::-moz-placeholder {
  color: #909395;
}
.article-form .form-group input[type=text]::placeholder,
.article-form .form-group input[type=email]::placeholder,
.article-form .form-group textarea::placeholder,
.article-form .form-group select::placeholder {
  color: #909395;
}
.article-form .form-group textarea {
  resize: vertical;
  min-height: 120px;
}
@media (max-width: 768px) {
  .article-form {
    padding: 1.5rem;
  }
}

.quiz-container {
  background: #ffffff;
  border-radius: 12px;
  padding: 2rem;
  margin: 2rem 0;
  box-shadow: 0 6px 20px rgba(53, 57, 60, 0.08);
  border: 1px solid rgba(93, 96, 98, 0.1);
}
.quiz-container .quiz-question {
  font-size: 1.1rem;
  font-weight: 600;
  color: #043F6D;
  margin-bottom: 1.5rem;
  line-height: 1.5;
}
.quiz-container .quiz-options {
  list-style: none;
  padding: 0;
  margin: 0;
}
.quiz-container .quiz-options li {
  margin-bottom: 0.8rem;
}
.quiz-container .quiz-options li label {
  display: flex;
  align-items: center;
  padding: 1rem;
  background: rgba(93, 96, 98, 0.04);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  font-size: 0.95rem;
  line-height: 1.4;
  border: 1px solid rgba(93, 96, 98, 0.15);
}
.quiz-container .quiz-options li label:hover {
  background: rgba(70, 162, 218, 0.08);
  transform: translateX(5px);
}
.quiz-container .quiz-options li label input[type=radio] {
  margin-right: 1rem;
  transform: scale(1.2);
}
.quiz-container .quiz-options li.correct label {
  background: rgba(40, 167, 69, 0.08);
  border: 2px solid #28a745;
  color: #1e7e34;
}
.quiz-container .quiz-options li.incorrect label {
  background: rgba(220, 53, 69, 0.08);
  border: 2px solid #dc3545;
  color: #721c24;
}
.quiz-container .quiz-explanation {
  margin-top: 1.5rem;
  padding: 1rem;
  background: rgba(70, 162, 218, 0.08);
  border-radius: 8px;
  font-size: 0.95rem;
  line-height: 1.6;
  color: #4d5357;
  border: 1px solid rgba(70, 162, 218, 0.2);
}

.accordion {
  margin: 2rem 0;
}
.accordion .accordion-item {
  background: #ffffff;
  border: 1px solid rgba(93, 96, 98, 0.15);
  border-radius: 8px;
  margin-bottom: 0.5rem;
  overflow: hidden;
}
.accordion .accordion-item .accordion-header {
  background: rgba(93, 96, 98, 0.04);
  padding: 1rem 1.5rem;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  color: #043F6D;
}
.accordion .accordion-item .accordion-header:hover {
  background: rgba(70, 162, 218, 0.08);
}
.accordion .accordion-item .accordion-header .accordion-icon {
  transition: transform 0.3s ease;
  color: #46A2DA;
}
.accordion .accordion-item .accordion-header.active .accordion-icon {
  transform: rotate(180deg);
}
.accordion .accordion-item .accordion-content {
  padding: 1.5rem;
  display: none;
  font-size: 0.95rem;
  line-height: 1.6;
  color: #35393C;
}
.accordion .accordion-item .accordion-content.active {
  display: block;
}

.progress-bar {
  background: rgba(93, 96, 98, 0.15);
  border-radius: 10px;
  height: 8px;
  margin: 1rem 0;
  overflow: hidden;
}
.progress-bar .progress-fill {
  background: linear-gradient(135deg, #46A2DA, #065b9e);
  height: 100%;
  border-radius: 10px;
  transition: width 0.5s ease;
  position: relative;
}
.progress-bar .progress-fill::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.3) 50%, transparent 70%);
  animation: shimmer 2s infinite;
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}
.tabs {
  margin: 2rem 0;
}
.tabs .tab-nav {
  display: flex;
  background: rgba(93, 96, 98, 0.06);
  border-radius: 8px 8px 0 0;
  overflow: hidden;
}
.tabs .tab-nav .tab-button {
  flex: 1;
  padding: 1rem;
  background: transparent;
  border: none;
  cursor: pointer;
  font-weight: 600;
  color: #767a7c;
  transition: all 0.3s ease;
}
.tabs .tab-nav .tab-button:hover {
  background: rgba(93, 96, 98, 0.1);
  color: #043F6D;
}
.tabs .tab-nav .tab-button.active {
  background: #46A2DA;
  color: #ffffff;
}
.tabs .tab-content {
  background: #ffffff;
  padding: 2rem;
  border-radius: 0 0 8px 8px;
  box-shadow: 0 4px 12px rgba(53, 57, 60, 0.08);
  display: none;
  border: 1px solid rgba(93, 96, 98, 0.1);
}
.tabs .tab-content.active {
  display: block;
}

.ja {
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
  color: #767a7c;
}

.author-section {
  background: #ffffff;
  border-radius: 12px;
  padding: 2rem;
  margin: 3rem 0;
  box-shadow: 0 4px 16px rgba(53, 57, 60, 0.1);
  border: 1px solid rgba(93, 96, 98, 0.15);
  display: flex;
  align-items: flex-start;
  gap: 1.5rem;
  transition: all 0.3s ease;
}
.author-section:hover {
  box-shadow: 0 6px 20px rgba(53, 57, 60, 0.15);
  transform: translateY(-2px);
}
.author-section img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  -o-object-fit: cover;
     object-fit: cover;
  border: 4px solid #c6e2f4;
  box-shadow: 0 4px 12px rgba(70, 162, 218, 0.3);
  flex-shrink: 0;
  transition: all 0.3s ease;
}
.author-section img:hover {
  transform: scale(1.05);
  border-color: #46A2DA;
}
.author-section .text-content {
  flex: 1;
}
.author-section .text-content h3 {
  font-size: 1.4rem;
  color: #043F6D;
  margin: 0 0 0.5rem 0;
  font-weight: 700;
  position: relative;
  padding-bottom: 0.5rem;
  border-left: none !important;
}
.author-section .text-content h3::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, #46A2DA, #9bcdeb);
  border-radius: 2px;
}
.author-section .text-content h6 {
  font-size: 1.1rem;
  color: #46A2DA;
  margin: 0 0 1rem 0;
  font-weight: 600;
  letter-spacing: 0.5px;
}
.author-section .text-content p {
  font-size: 0.85rem;
  line-height: 1.7;
  color: #5D6062;
  margin: 0;
  text-align: justify;
}
@media (max-width: 768px) {
  .author-section {
    flex-direction: column;
    text-align: center;
    padding: 1.5rem;
  }
  .author-section img {
    width: 100px;
    height: 100px;
    align-self: center;
  }
  .author-section .text-content h3::after {
    left: 50%;
    transform: translateX(-50%);
  }
}
@media (max-width: 480px) {
  .author-section {
    margin: 2rem 0;
    padding: 1rem;
  }
  .author-section img {
    width: 80px;
    height: 80px;
  }
  .author-section .text-content h3 {
    font-size: 1.2rem;
  }
  .author-section .text-content h6 {
    font-size: 1rem;
  }
  .author-section .text-content p {
    font-size: 0.9rem;
    line-height: 1.6;
  }
}

/* ──────────────────────────
   Related Articles Section
   ────────────────────────── */
.related-articles-section {
  background: #ffffff;
  border-radius: 12px;
  padding: 2rem;
  margin: 3rem 0;
  box-shadow: 0 4px 16px rgba(53, 57, 60, 0.08);
  border: 1px solid rgba(93, 96, 98, 0.1);
}
.related-articles-section h4 {
  font-size: 1.4rem;
  font-weight: 700;
  color: #043F6D;
  margin-bottom: 1.5rem;
  text-align: center;
  position: relative;
  padding-bottom: 1rem;
  background: none !important;
  border-left: none !important;
}
.related-articles-section h4::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, #46A2DA, #9bcdeb);
  border-radius: 2px;
}
.related-articles-section .card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}
@media (max-width: 768px) {
  .related-articles-section .card-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
}
.related-articles-section .related-article-item {
  text-decoration: none;
  color: inherit;
  transition: transform 0.3s ease;
}
.related-articles-section .related-article-item:hover {
  transform: translateY(-4px);
  text-decoration: none;
  color: inherit;
}
.related-articles-section .related-article-item:hover .blog-card {
  box-shadow: 0 8px 24px rgba(53, 57, 60, 0.12);
}
.related-articles-section .blog-card {
  background: #ffffff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(53, 57, 60, 0.08);
  border: 1px solid rgba(93, 96, 98, 0.1);
  transition: all 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}
.related-articles-section .blog-card img {
  width: 100%;
  height: 180px;
  -o-object-fit: cover;
     object-fit: cover;
  display: block;
  border-bottom: 1px solid rgba(93, 96, 98, 0.1);
}
.related-articles-section .blog-card .title {
  font-size: 1rem;
  font-weight: 600;
  color: #043F6D;
  margin: 0 0 0.5rem 0;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  min-height: 2.8rem;
}
.related-articles-section .blog-card .update-date {
  color: #767a7c;
  margin: 0 0 0.5rem 0;
  font-size: 0.85rem;
}
.related-articles-section .blog-card .category {
  display: inline-block;
  background: linear-gradient(135deg, #c6e2f4, #f0f7fc);
  color: #043F6D;
  padding: 0.2rem 0.6rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}
.related-articles-section .blog-card .excerpt {
  color: #5D6062;
  font-size: 0.9rem;
  line-height: 1.5;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  flex-grow: 1;
}
.related-articles-section .blog-card > *:not(img) {
  padding-left: 1rem;
  padding-right: 1rem;
}
.related-articles-section .blog-card .title {
  padding-top: 1rem;
}
.related-articles-section .blog-card .excerpt {
  padding-bottom: 1rem;
}
@media (max-width: 768px) {
  .related-articles-section {
    padding: 1.5rem;
    margin: 2rem 0;
  }
  .related-articles-section h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
  }
  .related-articles-section .blog-card img {
    height: 160px;
  }
  .related-articles-section .blog-card .title {
    font-size: 0.95rem;
  }
  .related-articles-section .blog-card .excerpt {
    font-size: 0.85rem;
  }
  .related-articles-section .blog-card > *:not(img) {
    padding-left: 0.8rem;
    padding-right: 0.8rem;
  }
}
@media (max-width: 480px) {
  .related-articles-section {
    padding: 1rem;
    margin: 1.5rem 0;
  }
  .related-articles-section h4 {
    font-size: 1.1rem;
  }
  .related-articles-section .blog-card img {
    height: 140px;
  }
  .related-articles-section .blog-card .title {
    font-size: 0.9rem;
    min-height: 2.5rem;
  }
  .related-articles-section .blog-card .excerpt {
    font-size: 0.8rem;
    -webkit-line-clamp: 1;
    line-clamp: 1;
    max-height: 1.2rem;
  }
  .related-articles-section .blog-card > *:not(img) {
    padding-left: 0.6rem;
    padding-right: 0.6rem;
  }
}

/* カテゴリーに枠を付ける */
.article-category {
  display: inline-block;
  font-size: 0.75rem;
  color: #666;
  background-color: #f8f9fa;
  border: 1px solid #dee2e6;
  padding: 3px 8px;
  margin-bottom: 0.5em;
  font-weight: 500;
  width: auto !important;
  max-width: -moz-fit-content !important;
  max-width: fit-content !important;
}

/******************************/
/* alert上書き */
/******************************/
.alert-light {
  --bs-alert-bg: hsl(210, 8.80%, 95%);
  --bs-alert-border-color: hsl(210, 8.80%, 85%);
}

.topic {
  background: rgba(235, 72, 120, 0.15);
  padding: 2px 4px;
  border-radius: 3px;
  border-bottom: 2px solid #EB4878;
  font-weight: 400 !important;
}

.mainidea {
  background: rgba(245, 161, 0, 0.15);
  padding: 2px 4px;
  border-radius: 3px;
  border-bottom: 2px solid #F5A100;
  font-weight: 400 !important;
}/*# sourceMappingURL=article.css.map */