.article-section {
      padding: 70px 5% 180px;
    }

    .article-inner {
      width: 100%;
      max-width: 720px;
      margin: 0 auto;
    }

    .article-breadcrumb {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 0.55em;
      list-style: none;
      margin-bottom: 48px;
      font-size: 0.72rem;
      letter-spacing: 0.08em;
      line-height: 1.8;
      color: #8fa0af;
    }
    .article-breadcrumb li:not(:last-child)::after {
      content: "/";
      margin-left: 0.55em;
      color: #c6d0d8;
    }
    .article-breadcrumb a {
      color: #8fa0af;
      text-decoration: none;
      transition: color 0.3s ease;
    }
    .article-breadcrumb a:hover {
      color: #E00000;
    }

    .article-head {
      padding-bottom: 36px;
      margin-bottom: 52px;
      border-bottom: 1px solid #e4e8ec;
    }
    .article-meta {
      display: flex;
      align-items: center;
      gap: 16px;
      margin-bottom: 24px;
    }
    .article-cat {
      display: inline-block;
      padding: 5px 15px;
      border-radius: 100px;
      background-color: #002842;
      color: #fff;
      font-size: 0.68rem;
      letter-spacing: 0.14em;
      line-height: 1.7;
      text-decoration: none;
    }
    .article-date {
      font-family: "Montserrat", sans-serif;
      font-size: 0.78rem;
      font-weight: 500;
      letter-spacing: 0.1em;
      color: #8fa0af;
    }
    .article-title {
      font-size: clamp(1.55rem, 3.4vw, 2.1rem);
      font-weight: bold;
      line-height: 1.75;
      letter-spacing: 0.04em;
      color: #002842;
      margin-bottom: 28px;
    }
    .article-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      list-style: none;
    }
    .article-tags a {
      display: inline-block;
      padding: 6px 14px;
      border: 1px solid #dfe5ea;
      border-radius: 100px;
      font-size: 0.72rem;
      letter-spacing: 0.06em;
      line-height: 1.7;
      color: #5a6672;
      text-decoration: none;
      transition: border-color 0.3s ease, color 0.3s ease, background-color 0.3s ease;
    }
    .article-tags a:hover {
      border-color: #002842;
      background-color: #f5f7f9;
      color: #002842;
    }

    .article-body {
      font-size: 1rem;
      line-height: 2.15;
      letter-spacing: 0.04em;
      color: #3f4a54;
    }

    .article-body > * + * {
      margin-top: 1.9em;
    }
    .article-body h2 {
      position: relative;
      margin-top: 3.2em;
      padding-left: 0.85em;
      font-size: 1.14rem;
      font-weight: bold;
      line-height: 1.8;
      letter-spacing: 0.06em;
      color: #002842;
    }
    .article-body h2::before {
      content: '';
      position: absolute;
      left: 0;
      top: 0.42em;
      width: 3px;
      height: 1.05em;
      border-radius: 2px;
      background-color: #E00000;
    }
    .article-body h3 {
      margin-top: 2.6em;
      font-size: 1rem;
      font-weight: bold;
      line-height: 1.9;
      letter-spacing: 0.06em;
      color: #002842;
    }
    .article-body strong {
      font-weight: bold;
      color: #002842;
    }

    .article-body em {
      font-style: normal;
      background: linear-gradient(transparent 62%, #ffe7a3 62%);
    }
    .article-body a {
      color: #1d5688;
      text-decoration: underline;
      text-underline-offset: 3px;
    }
    .article-body ul,
    .article-body ol {
      padding-left: 1.4em;
    }
    .article-body li + li {
      margin-top: 0.5em;
    }
    .article-body blockquote {
      padding: 2px 0 2px 22px;
      border-left: 2px solid #d3dbe2;
      font-size: 0.95rem;
      color: #5a6672;
    }
    .article-body hr {
      border: 0;
      border-top: 1px solid #e4e8ec;
      margin: 3.4em 0;
    }

    .article-lead-out {
      font-weight: bold;
      color: #002842;
    }

    .article-figure {
      margin-top: 2.2em;
    }
    .article-figure img {
      display: block;
      width: 100%;
      height: auto;
      border-radius: 12px;
      background-color: #eef1f4;
    }
    .article-figure figcaption {
      margin-top: 14px;
      font-size: 0.75rem;
      line-height: 1.9;
      letter-spacing: 0.05em;
      color: #8fa0af;
      text-align: center;
    }

    .article-figure-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .article-foot {
      margin-top: 90px;
      padding-top: 44px;
      border-top: 1px solid #e4e8ec;
    }
    .article-pager {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 14px;
    }
    .article-pager a {
      display: block;
      padding: 22px 24px;
      border: 1px solid #e4e8ec;
      border-radius: 10px;
      font-size: 0.85rem;
      line-height: 1.9;
      letter-spacing: 0.04em;
      color: #002842;
      text-decoration: none;
      transition: border-color 0.3s ease, background-color 0.3s ease, transform 0.45s var(--e-quint);
    }
    .article-pager a:hover {
      border-color: #c6d0d8;
      background-color: #f5f7f9;
    }
    .article-pager .pager-label {
      display: block;
      margin-bottom: 8px;
      font-family: "Montserrat", sans-serif;
      font-size: 0.65rem;
      font-weight: 600;
      letter-spacing: 0.16em;
      color: #8fa0af;
    }
    .article-pager .pager-next {
      text-align: right;
    }
    .article-back {
      display: flex;
      justify-content: center;
      margin-top: 56px;
    }

    @media screen and (max-width: 768px) {
      .article-section {
        padding: 40px 20px 120px;
      }
      .article-breadcrumb {
        margin-bottom: 30px;
      }
      .article-head {
        padding-bottom: 28px;
        margin-bottom: 40px;
      }
      .article-meta {
        gap: 12px;
        margin-bottom: 18px;
      }
      .article-title {
        margin-bottom: 22px;
      }
      .article-body {
        font-size: 0.95rem;
        line-height: 2.05;
      }
      .article-body h2 {
        margin-top: 2.6em;
        font-size: 1.05rem;
      }
      .article-figure img {
        border-radius: 8px;
      }
      .article-figure-row {
        grid-template-columns: 1fr;
        gap: 12px;
      }
      .article-foot {
        margin-top: 60px;
        padding-top: 32px;
      }
      .article-pager {
        grid-template-columns: 1fr;
      }
      .article-pager .pager-next {
        text-align: left;
      }
      .article-back {
        margin-top: 40px;
      }
    }

    .js-motion .article-pager a:hover {
      transform: translateY(-3px);
    }
    @media screen and (max-width: 768px) {
      .js-motion .article-pager a:hover { transform: none; }
    }