@charset "UTF-8";

/* ==========================================================================
   1. Blog Common Header (PROCESS ページ仕様に統一)
   ========================================================================== */
header.page-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: #ffffff;
    border-bottom: 1px solid #e8e5de;
}

/* ==========================================================================
   2. Blog List Page Styles (一覧ページ用)
   ========================================================================== */
.page-header-section {
    padding: 100px 0 60px;
    text-align: center;
}
.page-title {
    font-size: 2.8rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    margin-bottom: 16px;
    font-family: 'Noto Serif JP', serif;
}
.page-lead {
    font-size: 1.1rem;
    color: #555;
    letter-spacing: 0.08em;
    font-family: 'Noto Serif JP', serif;
}

.blog-section {
    padding-bottom: 120px;
}
.blog-list {
    display: flex;
    flex-direction: column;
    gap: 40px;
    margin-top: 40px;
}
.blog-card {
    background-color: #fff;
    border: 1px solid #e5e3dd;
    padding: 40px 48px;
    transition: border-color 0.3s, transform 0.3s, box-shadow 0.3s;
    display: block;
}
.blog-card:hover {
    border-color: #1a1a1a;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.04);
}
.blog-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.88rem;
    color: #777;
    font-family: 'Noto Sans JP', sans-serif;
    margin-bottom: 16px;
    letter-spacing: 0.05em;
}
.blog-category {
    color: #1a1a1a;
    font-weight: 500;
}
.blog-meta-divider {
    color: #ccc;
}
.blog-title {
    font-size: 1.5rem;
    font-weight: 400;
    line-height: 1.5;
    margin-bottom: 20px;
    color: #2b2b2b;
    letter-spacing: 0.05em;
    transition: color 0.3s;
}
.blog-card:hover .blog-title {
    color: #000;
}
.blog-excerpt {
    font-size: 1.0rem;
    color: #555;
    line-height: 2.0;
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 300;
}

/* ==========================================================================
   3. Article Detail Page Styles (記事詳細ページ用)
   ========================================================================== */
main.article-container {
    padding: 40px 0 120px;
}

/* パンくずリスト（ブログタイトルとの間に60pxの余白を確保） */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 0.85rem;
    color: #888888;
    margin-bottom: 60px;
    flex-wrap: wrap;
}
.breadcrumb a {
    color: #666666;
    text-decoration: none;
    transition: color 0.2s;
}
.breadcrumb a:hover {
    color: #1a1a1a;
    text-decoration: underline;
}

/* 記事タイトルヘッダー（独立ブロック化） */
.article-header {
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid #e8e5de;
    display: block;
    width: 100%;
}
.article-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 0.88rem;
    color: #777777;
}
.article-category {
    color: #1a1a1a;
    font-weight: 600;
    letter-spacing: 0.08em;
}
.article-title {
    font-family: 'Noto Serif JP', serif;
    font-size: 2.2rem;
    font-weight: 600;
    line-height: 1.5;
    color: #1a1a1a;
    letter-spacing: 0.05em;
    margin: 0;
}

/* 記事本文カード */
.article-body {
    background-color: #ffffff !important;
    border: 1px solid #e5e3dd;
    padding: 48px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
    font-family: 'Noto Serif JP', serif;
    font-size: 1.08rem;
    line-height: 2.3;
    color: #2b2b2b;
}
.article-body p {
    margin-bottom: 28px;
    letter-spacing: 0.04em;
}
.article-body p:last-of-type {
    margin-bottom: 0;
}
.article-body h2 {
    font-family: 'Noto Serif JP', serif;
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 1.6;
    margin: 52px 0 24px;
    padding-bottom: 12px;
    border-bottom: 1px solid #d1d0cc;
    color: #1a1a1a;
    letter-spacing: 0.06em;
}

/* 著者・署名エリア */
.article-author {
    margin-top: 56px;
    padding-top: 28px;
    border-top: 1px solid #eae6df;
    text-align: right;
    font-family: 'Noto Serif JP', serif;
}
.author-title {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 0.78rem;
    letter-spacing: 0.15em;
    color: #888888;
    margin-bottom: 4px;
}
.author-name {
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: #1a1a1a;
}

/* 記事下部 CTA */
.article-cta {
    margin-top: 60px;
    padding: 48px;
    background-color: #ffffff;
    border: 1px solid #e5e3dd;
    text-align: center;
}
.article-cta p {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 1.0rem;
    line-height: 1.9;
    color: #333333;
    margin-bottom: 28px;
    font-weight: 400;
}
.btn-cta {
    display: inline-block;
    min-width: 300px;
    padding: 18px 36px;
    background-color: #1a1a1a;
    color: #ffffff;
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 0.92rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-decoration: none;
    transition: opacity 0.3s;
}
.btn-cta:hover {
    opacity: 0.85;
}

/* ==========================================================================
   4. Responsive Adjustments (Mobile / Tablet)
   ========================================================================== */
@media (max-width: 768px) {
    .page-header-section {
        padding: 60px 0 40px;
    }
    .page-title {
        font-size: 2.0rem;
    }
    .page-lead {
        font-size: 0.95rem;
    }
    .blog-card {
        padding: 28px 24px;
    }
    .blog-title {
        font-size: 1.25rem;
    }
    .blog-excerpt {
        font-size: 0.92rem;
    }

    main.article-container {
        padding: 30px 0 80px;
    }
    .breadcrumb {
        margin-bottom: 40px;
    }
    .article-title {
        font-size: 1.6rem;
    }
    .article-body {
        padding: 28px 20px;
        font-size: 0.94rem;
        line-height: 2.0;
    }
    .article-body h2 {
        font-size: 1.25rem;
        margin: 40px 0 20px;
    }
    .article-cta {
        padding: 32px 20px;
    }
    .article-cta p {
        font-size: 0.88rem;
        text-align: left;
    }
    .btn-cta {
        width: 100%;
        min-width: auto;
    }
}