.news-detail {
    max-width: 800px;
    margin: 120px auto 80px auto;
    padding: 2rem;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05)
}

.news-title {
    font-size: var(--fs-h2);
    font-weight: 300;
    margin-bottom: 1rem;
    color: #003366;
}

.news-date {
    font-size: var(--fs-small);
    color: #666;
    margin-bottom: 1.5rem;
}

.news-body {
    font-size: var(--fs-body);
    line-height: 1.8;
    color: #333;
}

/* 見出しスタイル */
.news-body h2 {
    font-size: var(--fs-h2);
    font-weight: 500;
    color: #003366;
    margin: 2.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #eaeaea;
}

.news-body h3 {
    font-size: var(--fs-h3);
    font-weight: 500;
    color: #1a4971;
    margin: 2rem 0 1rem;
}

/* リストスタイル */
.news-body ul {
    margin: 1rem 0;
    padding-left: 0;
    list-style: none;
}

.news-body ul li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.75rem;
    line-height: 1.6;
}

.news-body ul li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: #007acc;
    font-weight: bold;
    font-size: 1.2em;
}

/* 参考リンク */
.reference {
    font-size: var(--fs-small);
    color: #666;
    margin: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.reference::before {
    content: "→";
    position: absolute;
    left: 0;
    color: #007acc;
}

.reference-links {
    background-color: #f8f9fa;
    padding: 1rem 1.5rem;
    border-radius: 6px;
    margin: 1.5rem 0;
}

.reference-links li {
    margin-bottom: 0.5rem;
}

.reference a,
.reference-links a {
    color: #007acc;
    text-decoration: none;
    transition: color 0.2s ease;
}

.reference a:hover,
.reference-links a:hover {
    color: #005fa3;
    text-decoration: underline;
}

/* 注意書き */
.note {
    background-color: #f8f9fa;
    padding: 1rem 1.5rem;
    border-left: 4px solid #007acc;
    border-radius: 0 6px 6px 0;
    margin: 2rem 0;
    font-size: var(--fs-small);
    color: #555;
}

.back-link {
    display: inline-block;
    margin-top: 2rem;
    font-size: var(--fs-small);
    color: #007acc;
    text-decoration: underline;
}

.back-link:hover {
    color: #005fa3;
}

/* ========================================
   レスポンシブ対応
   ======================================== */

/* タブレット（768px以下） */
@media (max-width: 768px) {
    .news-detail {
        margin: 80px auto 60px auto;
        padding: 1.5rem;
    }

    .news-title {
        font-size: 1.6rem;
    }

    .news-date {
        font-size: 0.9rem;
    }

    .news-body {
        font-size: 0.95rem;
    }

    .news-body h2 {
        font-size: 1.3rem;
        margin: 2rem 0 0.8rem;
    }

    .news-body h3 {
        font-size: 1.15rem;
        margin: 1.5rem 0 0.8rem;
    }
}

/* スマートフォン（480px以下） */
@media (max-width: 480px) {
    html, body {
        overflow-x: hidden;
        width: 100%;
    }

    .news-detail {
        margin: 60px auto 50px auto;
        padding: 1.2rem;
        border-radius: 0;
        box-shadow: none;
    }

    .news-title {
        font-size: 1.4rem;
        line-height: 1.3;
        word-break: break-word;
    }

    .news-date {
        font-size: 0.85rem;
        margin-bottom: 1rem;
    }

    .news-body {
        font-size: 0.9rem;
        line-height: 1.7;
    }

    .news-body h2 {
        font-size: 1.2rem;
        margin: 1.5rem 0 0.8rem;
        padding-bottom: 0.4rem;
    }

    .news-body h3 {
        font-size: 1.05rem;
        margin: 1.2rem 0 0.6rem;
    }

    .news-body ul {
        margin: 0.8rem 0;
    }

    .news-body ul li {
        padding-left: 1.3rem;
        margin-bottom: 0.6rem;
        font-size: 0.9rem;
    }

    .reference {
        font-size: 0.85rem;
        padding-left: 1.3rem;
    }

    .reference-links {
        padding: 0.8rem 1rem;
        margin: 1rem 0;
        font-size: 0.85rem;
    }

    .reference-links li {
        margin-bottom: 0.4rem;
        word-break: break-word;
    }

    .note {
        padding: 0.8rem 1rem;
        margin: 1.5rem 0;
        font-size: 0.85rem;
        border-radius: 0 4px 4px 0;
    }

    .back-link {
        margin-top: 1.5rem;
        font-size: 0.9rem;
        display: block;
        text-align: center;
    }
}

/* 超小型デバイス（320px以下） */
@media (max-width: 320px) {
    .news-detail {
        margin: 50px auto 40px auto;
        padding: 1rem;
    }

    .news-title {
        font-size: 1.2rem;
    }

    .news-date {
        font-size: 0.8rem;
    }

    .news-body {
        font-size: 0.85rem;
    }

    .news-body h2 {
        font-size: 1.1rem;
    }

    .news-body h3 {
        font-size: 1rem;
    }

    .news-body ul li {
        font-size: 0.85rem;
        padding-left: 1.2rem;
    }

    .reference,
    .reference-links,
    .note {
        font-size: 0.8rem;
    }

    .back-link {
        font-size: 0.85rem;
    }
}