* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: "Yu Gothic", "游ゴシック", YuGothic, "游ゴシック体", sans-serif;
            color: #4a4a4a;
            line-height: 1.8;
        }

        /* ヘッダー */
        header {
            background-color: #efe3c9;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .header-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 1rem 2rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            height: 45px;
        }

        /* ハンバーガーボタン */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 5px;
        }

        .hamburger span {
            width: 25px;
            height: 3px;
            background-color: #4a4a4a;
            transition: all 0.3s;
        }

        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(7px, 7px);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(7px, -7px);
        }

        nav ul {
            display: flex;
            list-style: none;
            gap: 2rem;
        }

        nav a {
            text-decoration: none;
            color: #4a4a4a;
            font-weight: 500;
            transition: color 0.3s;
        }

        nav a:hover {
            color: #e8a87c;
        }

        /* ページヒーロー */
        .page-hero {
            position: relative;
            height: 300px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.4)), url('../../image/tempo31.jpg');
            background-size: cover;
            background-position: center;
            text-align: center;
        }

        .page-hero h1 {
            font-size: 3rem;
            color: #fff;
            text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
            font-weight: 600;
        }

        /* パンくずリスト */
        .breadcrumb {
            max-width: 1200px;
            margin: 0 auto;
            padding: 1.5rem 2rem;
            font-size: 0.9rem;
        }

        .breadcrumb a {
            color: #e8a87c;
            text-decoration: none;
            transition: opacity 0.3s;
        }

        .breadcrumb a:hover {
            opacity: 0.7;
        }

        .breadcrumb span {
            margin: 0 0.5rem;
            color: #999;
        }

        /* コンテナ */
        .container {
            max-width: 900px;
            margin: 0 auto;
            padding: 2rem 2rem 4rem;
        }

        /* 記事ヘッダー */
        .article-header {
            margin-bottom: 3rem;
            padding-bottom: 2rem;
            border-bottom: 2px solid #e8a87c;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 1.5rem;
        }

        .article-date {
            font-size: 1.1rem;
            font-weight: 600;
            color: #e8a87c;
        }

        .article-label {
            background-color: #e8a87c;
            color: white;
            padding: 0.3rem 1rem;
            border-radius: 20px;
            font-size: 0.85rem;
        }

        .article-title {
            font-size: 2rem;
            color: #4a4a4a;
            line-height: 1.6;
        }

        /* 記事コンテンツ */
        .article-content {
            font-size: 1.1rem;
            line-height: 2;
            color: #4a4a4a;
            margin-bottom: 3rem;
        }

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

        /* 戻るボタン */
        .back-button {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 1rem 2rem;
            background-color: #e8a87c;
            color: white;
            text-decoration: none;
            border-radius: 5px;
            font-weight: 500;
            transition: background-color 0.3s, transform 0.3s;
        }

        .back-button:hover {
            background-color: #d89768;
            transform: translateX(-5px);
        }

        /* フッター */
        footer {
            background-color: #f5f5f5;
            padding: 3rem 2rem;
            text-align: center;
            color: #666;
            margin-top: 4rem;
        }

        footer p {
            margin-bottom: 0.5rem;
        }

        /* モバイル対応 */
        @media (max-width: 768px) {
            .hamburger {
                display: flex;
            }

            nav {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background-color: #fff;
                box-shadow: 0 5px 10px rgba(0,0,0,0.1);
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease-in-out;
            }

            nav.active {
                max-height: 300px;
            }

            nav ul {
                flex-direction: column;
                gap: 0;
                padding: 1rem 0;
            }

            nav ul li {
                border-bottom: 1px solid #f0f0f0;
            }

            nav ul li:last-child {
                border-bottom: none;
            }

            nav a {
                display: block;
                padding: 1rem 2rem;
            }

            .page-hero {
                height: 200px;
            }

            .page-hero h1 {
                font-size: 2rem;
            }

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

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

            .container {
                padding: 1rem 1.5rem 3rem;
            }
        }