/* ==========================================================================
   blog/css/article.css
   ユーザー実用ガイド系記事の共通スタイル
   2026-05-10 新規
   ========================================================================== */

body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    font-family: 'Hiragino Kaku Gothic ProN', 'ヒラギノ角ゴ ProN', 'Yu Gothic', '游ゴシック', sans-serif;
    line-height: 1.8;
    color: #333;
    margin: 0;
    padding: 20px 0;
}

.article-container {
    max-width: 900px;
    margin: 0 auto;
    background: #fff;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    overflow: hidden;
}

/* パンくず */
.article-nav {
    background: linear-gradient(135deg, #4a90e2 0%, #7b68ee 100%);
    padding: 14px 32px;
    color: #fff;
    font-size: 0.9rem;
}
.article-nav a {
    color: #fff;
    text-decoration: none;
    opacity: 0.9;
}
.article-nav a:hover { opacity: 1; text-decoration: underline; }

/* ヘッダ */
.article-header {
    padding: 40px 40px 32px;
    border-bottom: 1px solid #eee;
}
.article-header h1 {
    font-size: 1.9rem;
    line-height: 1.4;
    margin: 12px 0 16px;
    color: #2c3e50;
}
.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.88rem;
    color: #666;
}
.article-meta .meta-category {
    background: #667eea;
    color: #fff;
    padding: 2px 10px;
    border-radius: 12px;
}
.article-lead {
    margin-top: 16px;
    font-size: 1.05rem;
    color: #555;
}

/* 本文 */
.article-content {
    padding: 32px 40px 40px;
}
.article-content h2 {
    font-size: 1.5rem;
    margin: 40px 0 16px;
    padding: 8px 0 8px 14px;
    border-left: 6px solid #667eea;
    color: #2c3e50;
}
.article-content h3 {
    font-size: 1.18rem;
    margin: 28px 0 12px;
    color: #4a5568;
}
.article-content p { margin: 0 0 14px; }
.article-content ul,
.article-content ol { margin: 0 0 16px 1.4em; }
.article-content li { margin-bottom: 6px; }
.article-content strong { color: #2c3e50; }

/* 情報ボックス */
.info-box {
    background: #f0f4ff;
    border-left: 5px solid #667eea;
    padding: 18px 22px;
    border-radius: 8px;
    margin: 20px 0;
}
.info-box.warning {
    background: #fff7e6;
    border-left-color: #f39c12;
}
.info-box.success {
    background: #e8f8f1;
    border-left-color: #27ae60;
}
.info-box h4 { margin: 0 0 10px; font-size: 1rem; color: #2c3e50; }
.info-box ul { margin-bottom: 0; }

/* 目次 */
.table-of-contents {
    background: #fafbfc;
    border: 1px solid #e1e4e8;
    border-radius: 8px;
    padding: 16px 22px;
    margin: 20px 0 28px;
}
.table-of-contents h3 {
    margin: 0 0 10px;
    font-size: 1rem;
    color: #2c3e50;
}
.table-of-contents ol { margin: 0 0 0 1.2em; }
.table-of-contents a {
    color: #4a5568;
    text-decoration: none;
}
.table-of-contents a:hover { color: #667eea; text-decoration: underline; }

/* テーブル */
.content-table {
    width: 100%;
    border-collapse: collapse;
    margin: 18px 0;
    font-size: 0.95rem;
}
.content-table th,
.content-table td {
    border: 1px solid #d1d5da;
    padding: 10px 12px;
    text-align: left;
    vertical-align: top;
}
.content-table th {
    background: #667eea;
    color: #fff;
    font-weight: 600;
}
.content-table tbody tr:nth-child(even) { background: #f7f9fc; }
.content-table td.num { text-align: right; font-variant-numeric: tabular-nums; }

/* 判定フロー（簡易） */
.flow-chart {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin: 20px 0;
}
.flow-step {
    background: #f0f4ff;
    border: 2px solid #667eea;
    border-radius: 10px;
    padding: 14px 18px;
}
.flow-step .flow-q {
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 6px;
}
.flow-arrow {
    text-align: center;
    color: #667eea;
    font-size: 1.4rem;
    font-weight: bold;
}
.flow-result {
    background: #e8f8f1;
    border-left: 5px solid #27ae60;
    padding: 12px 18px;
    border-radius: 6px;
    font-weight: 600;
    color: #1e7e54;
}

/* Q&A */
.qa-block { margin: 16px 0; }
.qa-q {
    background: #667eea;
    color: #fff;
    padding: 8px 14px;
    border-radius: 6px 6px 0 0;
    font-weight: 600;
}
.qa-a {
    background: #fafbfc;
    border: 1px solid #e1e4e8;
    border-top: none;
    padding: 12px 14px;
    border-radius: 0 0 6px 6px;
}

/* CTA */
.article-cta {
    margin-top: 40px;
    padding: 24px 28px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border-radius: 12px;
}
.article-cta h2 {
    color: #fff;
    border: none;
    padding: 0;
    margin: 0 0 12px;
    font-size: 1.2rem;
}
.article-cta ul { margin: 0 0 0 1.2em; }
.article-cta a {
    color: #fff;
    text-decoration: underline;
    font-weight: 500;
}
.article-cta a:hover { opacity: 0.85; }

/* レスポンシブ */
@media (max-width: 768px) {
    .article-container { border-radius: 0; }
    .article-header,
    .article-content { padding-left: 18px; padding-right: 18px; }
    .article-header h1 { font-size: 1.4rem; }
    .article-content h2 { font-size: 1.25rem; }
    .content-table { font-size: 0.85rem; }
}