/* ===== 記事ページ専用スタイル ===== */

/* パンくずリスト */
.breadcrumb {
    background-color: #F5F7FA;
    padding: 16px 0;
    font-size: 14px;
    color: #5A6C7D;
}

.breadcrumb a {
    color: #1E3A5F;
    transition: color 0.3s ease;
}

.breadcrumb a:hover {
    color: #FF6B35;
}

/* 記事ヒーロー */
.article-hero {
    background: linear-gradient(135deg, #1E3A5F 0%, #2C5282 100%);
    padding: 60px 20px;
    text-align: center;
    color: #fff;
}

.article-hero-title {
    font-size: 36px;
    color: #fff;
    margin: 20px 0;
    line-height: 1.4;
}

.article-meta-info {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
    font-size: 14px;
    color: #fff;
    opacity: 0.9;
    margin-top: 20px;
}

/* 記事レイアウト */
.article-layout {
    padding: 60px 20px;
    background-color: #fff;
}

.article-layout .container {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 60px;
    max-width: 1200px;
}

/* メインコンテンツ */
.article-main-content {
    max-width: 100%;
    min-width: 0; /* グリッドのオーバーフロー防止 */
}

/* 目次 */
.table-of-contents {
    background-color: #F5F7FA;
    border-left: 4px solid #FF6B35;
    padding: 30px;
    margin-bottom: 40px;
    border-radius: 8px;
}

.toc-title {
    font-size: 20px;
    color: #1E3A5F;
    margin-bottom: 16px;
}

.toc-list {
    list-style-position: inside;
    padding-left: 0;
}

.toc-list li {
    margin-bottom: 12px;
    line-height: 1.6;
}

.toc-list a {
    color: #2C3E50;
    transition: color 0.3s ease;
}

.toc-list a:hover {
    color: #FF6B35;
}

/* 記事本文 */
.article-body {
    font-size: 17px;
    line-height: 1.9;
    color: #2C3E50;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.article-body h2 {
    font-size: 28px;
    color: #1E3A5F;
    margin: 60px 0 24px 0;
    padding-bottom: 12px;
    border-bottom: 3px solid #FF6B35;
}

.article-body h3 {
    font-size: 22px;
    color: #1E3A5F;
    margin: 40px 0 16px 0;
}

.article-body p {
    margin-bottom: 24px;
}

.article-body strong {
    color: #1E3A5F;
    font-weight: 700;
}

.article-body ul, .article-body ol {
    margin: 24px 0;
    padding-left: 24px;
}

.article-body li {
    margin-bottom: 12px;
}

/* コンテンツテーブル */
.content-table-wrapper {
    overflow-x: auto;
    margin: 32px 0;
}

.content-table {
    width: 100%;
    /* min-width: 500px;  ← 削除 */
    border-collapse: collapse;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-radius: 8px;
    overflow: hidden;
}


.content-table th {
    background-color: #1E3A5F;
    color: #fff;
    padding: 16px;
    font-weight: 700;
    text-align: left;
}

.content-table td {
    padding: 16px;
    border-bottom: 1px solid #E5E7EB;
}

.content-table tbody tr:last-child td {
    border-bottom: none;
}

.content-table .highlight {
    background-color: #D1FAE5;
    font-weight: 700;
    color: #065F46;
}

/* ハイライトボックス */
.highlight-box {
    background-color: #FFF4E6;
    border-left: 4px solid #FF6B35;
    padding: 24px;
    margin: 32px 0;
    border-radius: 8px;
}

.highlight-box p {
    margin: 0;
    color: #2C3E50;
    font-weight: 500;
}

/* インフォボックス */
.info-box {
    background-color: #EBF8FF;
    border: 2px solid #3B82F6;
    padding: 24px;
    margin: 32px 0;
    border-radius: 8px;
}

.info-box h3 {
    color: #1E3A5F;
    font-size: 20px;
    margin-top: 0;
    margin-bottom: 12px;
}

.info-box p {
    margin-bottom: 0;
}

/* 事例ボックス */
.case-study-box {
    background-color: #F0FDF4;
    border: 2px solid #10B981;
    padding: 32px;
    margin: 32px 0;
    border-radius: 8px;
}

.case-study-box h3 {
    color: #065F46;
    font-size: 22px;
    margin-top: 0;
    margin-bottom: 16px;
}

.case-study-box p {
    margin-bottom: 12px;
}

.case-study-box ul {
    margin-top: 12px;
}

/* 記事内CTA */
.article-cta {
    background: linear-gradient(135deg, #1E3A5F 0%, #2C5282 100%);
    padding: 40px;
    margin: 60px 0;
    border-radius: 12px;
    text-align: center;
    color: #fff;
}

.article-cta h3 {
    font-size: 24px;
    color: #fff;
    margin-bottom: 12px;
}

.article-cta p {
    font-size: 16px;
    margin-bottom: 24px;
    opacity: 0.95;
}

.article-cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 最終CTA */
.article-final-cta {
    background-color: #F5F7FA;
    padding: 60px 40px;
    margin-top: 60px;
    border-radius: 12px;
    text-align: center;
}

.article-final-cta h2 {
    font-size: 28px;
    color: #1E3A5F;
    margin-bottom: 16px;
    border: none;
    padding: 0;
}

.article-final-cta p {
    font-size: 18px;
    color: #5A6C7D;
    margin-bottom: 32px;
}

/* サイドバー */
.article-sidebar {
    position: sticky;
    top: 100px;
    align-self: flex-start;
}

.sidebar-section {
    margin-bottom: 40px;
}

.sidebar-title {
    font-size: 18px;
    color: #1E3A5F;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid #E5E7EB;
}

.sidebar-articles {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sidebar-article {
    display: block;
    background-color: #fff;
    border: 1px solid #E5E7EB;
    border-radius: 8px;
    overflow: hidden;
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.sidebar-article:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.sidebar-article img {
    width: 100%;
    height: 150px;
    object-fit: cover;
}

.sidebar-article h4 {
    font-size: 15px;
    color: #2C3E50;
    padding: 16px;
    margin: 0;
    line-height: 1.5;
}

/* サイドバーCTA */
.sidebar-cta {
    background-color: #1E3A5F;
    padding: 32px 24px;
    border-radius: 12px;
    text-align: center;
    color: #fff;
}

.sidebar-cta h3 {
    font-size: 20px;
    color: #fff;
    margin-bottom: 12px;
}

.sidebar-cta p {
    font-size: 14px;
    margin-bottom: 20px;
    opacity: 0.95;
}

.sidebar-cta .btn {
    width: 100%;
}

/* ===== レスポンシブ対応 ===== */

/* タブレット (1024px以下) */
@media (max-width: 1024px) {
    .article-layout {
        padding: 40px 20px;
    }
    
    .article-layout .container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .article-sidebar {
        position: static;
    }
    
    .sidebar-articles {
        flex-direction: row;
        overflow-x: auto;
        gap: 16px;
        padding-bottom: 8px;
    }
    
    .sidebar-article {
        /* min-width: 250px;  ← 削除 */
        flex-shrink: 0;
    }
    
    .article-hero {
        padding: 40px 20px;
    }
    
    .article-hero-title {
        font-size: 28px;
    }
    
    .article-body h2 {
        font-size: 24px;
        margin: 40px 0 20px 0;
    }
    
    .article-body h3 {
        font-size: 20px;
        margin: 32px 0 12px 0;
    }
    
    .article-cta {
        padding: 32px 24px;
        margin: 40px 0;
    }
    
    .article-final-cta {
        padding: 40px 32px;
        margin-top: 40px;
    }
}

/* スマートフォン (768px以下) */
@media (max-width: 768px) {
    .breadcrumb {
        padding: 12px 0;
        font-size: 12px;
    }
    
    .article-hero {
        padding: 32px 16px;
    }
    
    .article-hero-title {
        font-size: 22px;
        margin: 16px 0;
    }
    
    .article-meta-info {
        flex-direction: column;
        gap: 8px;
        font-size: 13px;
        align-items: center;
    }
    
    .article-layout {
        padding: 32px 16px;
    }
    
    .article-layout .container {
        gap: 32px;
        padding: 0 16px;
    }
    
    .table-of-contents {
        padding: 20px 16px;
        margin-bottom: 32px;
    }
    
    .toc-title {
        font-size: 18px;
    }
    
    .toc-list {
        font-size: 14px;
    }
    
    .toc-list li {
        margin-bottom: 10px;
    }
    
    .article-body {
        font-size: 15px;
        line-height: 1.8;
    }
    
    .article-body h2 {
        font-size: 20px;
        margin: 32px 0 16px 0;
        padding-bottom: 10px;
        border-bottom: 2px solid #FF6B35;
    }
    
    .article-body h3 {
        font-size: 18px;
        margin: 24px 0 12px 0;
    }
    
    .article-body p {
        margin-bottom: 20px;
    }
    
    .article-body ul, .article-body ol {
        margin: 20px 0;
        padding-left: 20px;
    }
    
    .article-body li {
        margin-bottom: 10px;
    }
    
    .content-table-wrapper {
        margin: 24px -16px;
        padding: 0 16px;
    }
    
    .content-table {
        font-size: 13px;
        /* min-width: 400px; ← 削除 */
    }
    
    .content-table th,
    .content-table td {
        padding: 12px 10px;
    }
    
    .highlight-box,
    .info-box {
        padding: 20px 16px;
        margin: 24px 0;
    }
    
    .highlight-box p,
    .info-box p {
        font-size: 14px;
    }
    
    .info-box h3 {
        font-size: 18px;
    }
    
    .case-study-box {
        padding: 24px 20px;
        margin: 24px 0;
    }
    
    .case-study-box h3 {
        font-size: 20px;
    }
    
    .article-cta {
        padding: 24px 20px;
        margin: 40px 0;
    }
    
    .article-cta h3 {
        font-size: 20px;
        margin-bottom: 10px;
    }
    
    .article-cta p {
        font-size: 14px;
        margin-bottom: 20px;
    }
    
    .article-cta-buttons {
        flex-direction: column;
        gap: 12px;
    }
    
    .article-cta-buttons .btn {
        width: 100%;
    }
    
    .article-final-cta {
        padding: 32px 24px;
        margin-top: 32px;
    }
    
    .article-final-cta h2 {
        font-size: 22px;
        margin-bottom: 12px;
    }
    
    .article-final-cta p {
        font-size: 15px;
        margin-bottom: 24px;
    }
    
    .sidebar-section {
        margin-bottom: 32px;
    }
    
    .sidebar-title {
        font-size: 16px;
        margin-bottom: 16px;
    }
    
       .sidebar-articles {
        flex-direction: column;   /* ★ 追加：スマホでは縦並びに戻す */
        gap: 12px;
        overflow-x: visible;      /* ★ 追加：横スクロール不要 */
    }
    
    .sidebar-article {
        /* min-width: 200px; ← 削除 */
        width: 100%;              /* ★ 追加：画面幅にフィット */
    }

    
    .sidebar-article img {
        height: 120px;
    }
    
    .sidebar-article h4 {
        font-size: 14px;
        padding: 12px;
    }
    
    .sidebar-cta {
        padding: 24px 20px;
    }
    
    .sidebar-cta h3 {
        font-size: 18px;
    }
    
    .sidebar-cta p {
        font-size: 13px;
    }
}

/* 小型スマートフォン (480px以下) */
@media (max-width: 480px) {
    .article-hero-title {
        font-size: 18px;
    }
    
    .article-body {
        font-size: 14px;
    }
    
    .article-body h2 {
        font-size: 18px;
    }
    
    .article-body h3 {
        font-size: 16px;
    }
    
    .table-of-contents {
        padding: 16px 12px;
    }
    
    .toc-title {
        font-size: 16px;
    }
    
    .toc-list {
        font-size: 13px;
    }
    
    .content-table {
        font-size: 12px;
    }
    
    .content-table th,
    .content-table td {
        padding: 10px 8px;
    }
    
    .highlight-box,
    .info-box,
    .case-study-box {
        padding: 16px 12px;
    }
    
    .article-cta h3 {
        font-size: 18px;
    }
    
    .article-final-cta h2 {
        font-size: 20px;
    }
}

/* プリント時の最適化 */
@media print {
    .article-sidebar,
    .article-cta,
    .article-final-cta {
        display: none;
    }
    
    .article-layout .container {
        grid-template-columns: 1fr;
    }
    
    .article-body {
        font-size: 12pt;
        line-height: 1.6;
    }
    
    .article-body h2 {
        page-break-after: avoid;
    }
}

/* ===== 記事レイアウトのレスポンシブ対応 ===== */
@media (max-width: 960px) {
    .article-layout .container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 600px) {
    .article-hero {
        padding: 40px 16px;
    }

    .article-hero-title {
        font-size: 24px;
    }

    .article-meta-info {
        flex-direction: column;
        gap: 8px;
    }

    .article-layout {
        padding: 40px 16px;
    }

    .table-of-contents {
        padding: 20px;
    }

    .article-body h2 {
        font-size: 22px;
        margin: 40px 0 20px 0;
    }

    .article-body h3 {
        font-size: 18px;
        margin: 28px 0 14px 0;
    }
}