/* --- 記事スタイル --- */
.article-section {
    padding: 60px 0;
}

.breadcrumb {
    font-size: 0.85rem;
    margin-bottom: 30px;
    color: #888;
}

.breadcrumb a {
    color: #888;
}

.article-header {
    margin-bottom: 30px;
    padding-bottom: 25px;
    border-bottom: 2px solid var(--color-sand);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.article-meta {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.article-date {
    color: #fff;
    background: var(--color-teal);
    padding: 5px 12px;
    border-radius: 5px;
    font-size: 0.85rem;
    font-weight: bold;
}

.article-category {
    color: #fff;
    background: var(--color-teal);
    padding: 5px 12px;
    border-radius: 5px;
    font-size: 0.85rem;
    font-weight: bold;
}

.article-title {
    font-size: 1.8rem;
    color: var(--color-text-main);
    margin: 0;
    line-height: 1.4;
    display: block;
    width: 100%;
}

.article-content {
    font-size: 1rem;
    line-height: 2;
}

.article-content h2 {
    color: var(--color-blue);
    font-size: 1.4rem;
    margin-top: 40px;
    margin-bottom: 20px;
    padding-left: 15px;
    border-left: 4px solid var(--color-teal);
}

.article-content h3 {
    color: var(--color-teal);
    font-size: 1.2rem;
    margin-top: 30px;
    margin-bottom: 15px;
}

.article-content p {
    margin-bottom: 1.5em;
}

.article-content ul,
.article-content ol {
    margin-bottom: 1.5em;
    padding-left: 25px;
}

.article-content li {
    margin-bottom: 0.5em;
}

.article-content .highlight-box {
    background: var(--color-teal-light);
    padding: 20px;
    border-radius: 10px;
    margin: 20px 0;
}

.back-to-list {
    text-align: center;
    margin-top: 40px;
}

.back-to-list a {
    display: inline-block;
    background: #fff;
    color: var(--color-teal);
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: bold;
    border: 2px solid var(--color-teal);
}

.back-to-list a:hover {
    background: var(--color-teal-light);
    opacity: 1;
}

@media (max-width: 768px) {
    .article-section {
        padding: 40px 0 100px;
        /* footer offset */
    }

    .article-title {
        font-size: 1.5rem;
        text-align: center;
    }

    .article-header {
        margin-bottom: 20px;
    }
}