/* メインコンテンツ */
        .container {
            max-width: 800px;
            margin: 5rem auto;
            background: white;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
            border-radius: 15px;
            position: relative;
            z-index: 10;
        }

        .content {
            padding: 2rem;
        }

        /* タイトル */
        .page-title {
            font-size: 2.5rem;
            text-align: center;
            margin-bottom: 2rem;
            color: #333;
            border-bottom: 3px solid #3E96F3;
            padding-bottom: 1rem;
        }

        /* 前文 */
        .preamble {
            background: linear-gradient(135deg, rgba(140, 200, 250, 0.1), rgba(33, 87, 235, 0.1));
            padding: 1.5rem;
            border-left: 4px solid #3E96F3;
            margin-bottom: 2rem;
            border-radius: 5px;
        }

        /* 各条文 */
        .article {
            margin-bottom: 2.5rem;
            padding: 1.5rem;
            border: 1px solid #e9ecef;
            border-radius: 10px;
            transition: all 0.3s;
        }

        .article:hover {
            box-shadow: 0 5px 15px rgba(0,0,0,0.1);
        }

        .article-title {
            font-size: 1.3rem;
            font-weight: bold;
            color: #3E96F3;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid #e9ecef;
        }

        .article-content {
            color: #555;
        }

        /* リスト */
        .article-list {
            margin: 1rem 0;
            padding-left: 1.5rem;
        }

        .article-list li {
            margin-bottom: 1rem;
            position: relative;
        }

        .article-list li::marker {
            color: #3E96F3;
            font-weight: bold;
        }

        /* 矢印付きのリスト項目 */
        .info-item {
            margin: 0.8rem 0;
            padding-left: 1rem;
            position: relative;
        }

        .info-item::before {
            content: "→";
            position: absolute;
            left: 0;
            color: #667eea;
            font-weight: bold;
        }

        /* 強調テキスト */
        .highlight {
            background: #fff3cd;
            padding: 0.2rem 0.4rem;
            border-radius: 3px;
            font-weight: bold;
        }

        /* 重要な注意事項 */
        .important-note {
            background: #f8d7da;
            border: 1px solid #f5c6cb;
            color: #721c24;
            padding: 1rem;
            border-radius: 5px;
            margin: 1rem 0;
        }

        /* お問い合わせ情報 */
        .contact-info {
            background: linear-gradient(135deg, rgba(140, 200, 250, 0.1), rgba(33, 87, 235, 0.1));
            border: 1px solid #3E96F3;
            color: #155724;
            padding: 1.5rem;
            border-radius: 10px;
            text-align: center;
            font-size: 1.1rem;
        }

        .contact-email {
            font-weight: bold;
            color: #667eea;
            text-decoration: none;
            font-size: 1.2rem;
        }

        .contact-email:hover {
            text-decoration: underline;
        }

        /* 日付 */
        .date {
            text-align: right;
            font-style: italic;
            color: #666;
            margin-top: 2rem;
            padding-top: 1rem;
            border-top: 1px solid #e9ecef;
        }

        /* 戻るボタン */
        .back-button {
            display: inline-block;
            background: #667eea;
            color: white;
            padding: 0.8rem 2rem;
            border-radius: 25px;
            text-decoration: none;
            font-weight: bold;
            margin-bottom: 2rem;
            transition: all 0.3s;
        }

        .back-button:hover {
            background: #5a6fd8;
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
        }



        /* レスポンシブデザイン */
        @media (max-width: 768px) {
            .content {
                padding: 2rem 1.5rem;
            }

            .page-title {
                font-size: 2rem;
            }

            .logo {
                font-size: 1.5rem;
            }

            .subtitle {
                font-size: 1rem;
            }

            .article {
                padding: 1rem;
            }

            .article-title {
                font-size: 1.1rem;
            }
        }

        /* スクロールアニメーション */
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            transition: all 0.6s ease-out;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }