:root {
            --content-width: 1440px;
            --content-padding: 220px;
        }

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

        body {
            width: 100%;
            margin: 0;
            padding: 0;
            font-family: 'Shippori Mincho', serif;
            color: #000000;
            background: url('/img/back 3.png') no-repeat center top;
            background-size: 1440px auto;
            line-height: 1.6;
            overflow-x: hidden;
            position: relative;
        }

        /* PC版のみmin-widthを適用（769px以上） */
        @media (min-width: 769px) {
            body {
                min-width: var(--content-width);
            }
        }

        /* 左側の背景（左右反転、画面幅が1440pxを超えた場合のみ表示） */
        body::before {
            content: '';
            position: absolute;
            top: 0;
            right: calc(50% + 720px); /* 中央から1440pxの左端まで720px */
            width: 50vw;
            height: 100%;
            background: url('/img/back 3.png') repeat-x right top;
            background-size: 1440px auto;
            transform: scaleX(-1);
            pointer-events: none;
            z-index: -1;
        }

        /* 右側の背景（左右反転、画面幅が1440pxを超えた場合のみ表示） */
        body::after {
            content: '';
            position: absolute;
            top: 0;
            left: calc(50% + 720px); /* 中央から1440pxの右端まで720px */
            width: 50vw;
            height: 100%;
            background: url('/img/back 3.png') repeat-x left top;
            background-size: 1440px auto;
            transform: scaleX(-1);
            pointer-events: none;
            z-index: -1;
        }

        /* Header Navigation */
        .header-nav {
            width: 100vw;
            height: 72px;
            background: #000000;
            position: relative;
            display: flex;
            align-items: center;
            margin-left: calc((100vw - 100%) / -2);
        }

        .nav-menu {
            display: flex;
            gap: 40px;
            margin-left: 200px;
            align-items: center;
        }

        .nav-menu a {
            font-family: 'Noto Serif JP', serif;
            font-weight: 600;
            font-size: 14px;
            line-height: 1.7em;
            letter-spacing: 0.2em;
            color: #FFFFFF;
            text-decoration: none;
            transition: opacity 0.3s;
        }

        .nav-menu a:hover {
            opacity: 0.7;
        }

        .nav-menu a.active {
            font-weight: 400;
        }

        .nav-menu a:not(.active) {
            font-weight: 600;
        }

        /* Logo Header */
        .logo-header {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            margin-left: -520px; /* 1440pxの中心から左に520px（元のleft: 200pxの位置を再現） */
            top: 91px;
            width: 180px;
            height: 501px;
            z-index: 50;
        }

        .logo-header img {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }

        .logo-placeholder {
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, #C9BC9C 0%, #8B7E6A 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: #FFFFFF;
            text-align: center;
            padding: 20px;
        }

        /* Main Content Area */
        .main-content {
            position: relative;
            width: 100%;
            margin: 72px auto 0; /* ヘッダー分の余白、中央寄せ */
        }

        /* Background Images */
        .back-5 {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            top: 0;
            width: 1440px;
            height: 1014px;
            background: none;
            z-index: 1;
        }

        .back-1 {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            top: 1014px;
            width: 1440px;
            height: 1097px;
            background: none;
            z-index: 1;
        }

        .back-4 {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            width: 1440px;
            background: url('/img/back 4.png') no-repeat center top;
            background-size: cover;
            z-index: 5;
        }

        /* Content Container */
        .content-container {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            margin-left: 170px; /* 1440pxの中心から右に170px（元のleft: 540pxの位置を再現） */
            top: 152px;
            width: 700px;
            z-index: 10;
        }

        /* Page Title */
        .page-title {
            font-family: 'Noto Serif JP', serif;
            font-weight: 500;
            font-size: 56px;
            line-height: 1.4em;
            letter-spacing: 0.1em;
            color: #000000;
            margin-bottom: 64px;
        }

        /* Article Date */
        .article-date {
            font-family: 'Noto Sans JP', sans-serif;
            font-weight: 400;
            font-size: 16px;
            line-height: 1.2em;
            color: #222222;
            margin-bottom: 24px;
        }

        /* Article Title */
        .article-title {
            font-family: 'Noto Serif JP', serif;
            font-weight: 600;
            font-size: 24px;
            line-height: 1.7em;
            letter-spacing: 0.1em;
            color: #000000;
            margin-bottom: 40px;
        }

        /* Article Body */
        .article-body {
            font-family: 'Noto Serif JP', serif;
            font-weight: 300;
            font-size: 16px;
            line-height: 1.75em;
            color: #000000;
            margin-bottom: 40px;
        }

        /* Image Placeholder */
        .image-large {
            width: 700px;
            height: auto;
            min-height: 480px;
            background: #D9D9D9;
            margin-bottom: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #999;
            font-size: 14px;
            position: relative;
            z-index: 10;
        }

        /* Section Header with Accent */
        .section-header {
            display: flex;
            align-items: center;
            gap: 16px;
            width: 700px;
            height: 32px;
            margin-bottom: 32px;
        }

        .section-accent {
            width: 3px;
            height: 26px;
            background: #C9BC9C;
        }

        .section-title {
            font-family: 'Noto Serif JP', serif;
            font-weight: 600;
            font-size: 20px;
            line-height: 2em;
            letter-spacing: 0.1em;
            color: #000000;
        }

        /* Image Grid */
        .image-grid {
            display: flex;
            gap: 26px;
            margin-bottom: 40px;
        }

        .image-small {
            width: 337px;
            height: auto;
            min-height: 337px;
            background: #D9D9D9;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #999;
            font-size: 14px;
            position: relative;
            z-index: 10;
        }

        /* Back to Top Button */
        .back-to-top {
            position: absolute;
            left: 50%;
            margin-left: -153px; /* 1440pxの中心（720px）から左に153px = 567px */
            /* top はJavaScriptで動的に設定 */
            display: inline-block;
            cursor: pointer;
            text-decoration: none;
            z-index: 9999;
        }

        .back-to-top-text {
            font-family: 'Noto Serif JP', serif;
            font-weight: 700;
            font-size: 20px;
            line-height: 1.6em;
            letter-spacing: 0.05em;
            color: #000000;
            border-bottom: 1px solid #000000;
            padding-bottom: 2px;
        }

        .back-to-top-line {
            display: none;
        }

        /* リッチコンテンツ表示用スタイル（詳細ページ） */
        .article-rich-content {
            font-family: 'Noto Serif JP', serif;
            font-size: 16px;
            line-height: 1.75em;
            color: #000000;
            margin-bottom: 40px;
        }

        /* 見出し */
        .article-rich-content h2 {
            font-size: 24px;
            font-weight: 600;
            margin: 40px 0 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid #C9BC9C;
            color: #000000;
        }

        .article-rich-content h2:first-child {
            margin-top: 0;
        }

        .article-rich-content h3 {
            font-size: 18px;
            font-weight: 600;
            margin: 30px 0 15px;
            color: #000000;
        }

        .article-rich-content h3:first-child {
            margin-top: 0;
        }

        /* 段落 */
        .article-rich-content p {
            margin: 0 0 20px 0;
            line-height: 1.75em;
        }

        .article-rich-content p:last-child {
            margin-bottom: 0;
        }

        /* 空の段落を削除 */
        .article-rich-content p:empty,
        .article-rich-content p br:only-child {
            display: none;
        }

        /* 太字・斜体・下線 */
        .article-rich-content strong {
            font-weight: 700;
            color: #000000;
        }

        .article-rich-content em {
            font-style: italic;
        }

        .article-rich-content u {
            text-decoration: underline;
        }

        /* リスト */
        .article-rich-content ul,
        .article-rich-content ol {
            margin: 20px 0;
            padding-left: 30px;
        }

        .article-rich-content li {
            margin: 10px 0;
            line-height: 1.75em;
        }

        .article-rich-content ul li {
            list-style-type: disc;
        }

        .article-rich-content ol li {
            list-style-type: decimal;
        }

        /* リンク */
        .article-rich-content a {
            color: #C9BC9C;
            text-decoration: underline;
            transition: opacity 0.3s;
        }

        .article-rich-content a:hover {
            opacity: 0.7;
        }

        /* 画像 */
        .article-rich-content img {
            max-width: 100%;
            height: auto;
            display: block;
            margin: 30px auto;
            border-radius: 4px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

        .article-rich-content p img {
            margin: 30px auto;
        }

        /* テキスト配置 */
        .article-rich-content .ql-align-center {
            text-align: center;
        }

        .article-rich-content .ql-align-right {
            text-align: right;
        }

        .article-rich-content .ql-align-justify {
            text-align: justify;
        }

        /* レスポンシブ対応 */
        @media (max-width: 768px) {
            .article-rich-content {
                font-size: 14px;
                line-height: 1.7em;
            }

            .article-rich-content h2 {
                font-size: 18px;
                margin: 20px 0 12px;
            }

            .article-rich-content h3 {
                font-size: 16px;
                margin: 18px 0 10px;
            }

            .article-rich-content img {
                margin: 20px auto;
            }
        }

        /* =========================================
           お知らせページ用ヘッダー・フッタースタイル
           （TOPページと同じデザイン）
           ========================================= */

        /* ヘッダー */
        .news-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: #000000;
            height: 72px;
            z-index: 1000;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .news-header-content {
            width: 100%;
            max-width: 1440px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 40px;
        }

        .news-logo {
            width: 120px;
            height: auto;
        }

        .news-logo img {
            width: 100%;
            height: auto;
            filter: invert(1);
        }

        .news-nav {
            display: flex;
            gap: 40px;
        }

        .news-nav a {
            color: #FFFFFF;
            text-decoration: none;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.2em;
            transition: opacity 0.3s;
            font-family: 'Shippori Mincho', serif;
        }

        .news-nav a:hover {
            opacity: 0.7;
        }

        /* ハンバーガーメニュー（PC版では非表示） */
        .news-header .hamburger {
            display: none;
        }

        /* メインコンテンツの上部余白は不要（絶対配置レイアウトのため） */
        /* body { padding-top: 72px; } コメントアウト */

        /* =========================================
           フッター（TOPページと完全に同じCSS）
           ========================================= */

        footer {
            width: 100%;
            background-color: #000000;
            display: flex;
            justify-content: center;
            padding-top: 10px;
            position: relative;
            z-index: 100;
        }

        /* フッターの黒い背景を上部に39px拡張（footer-innerのmargin-top: -39pxに対応） */
        footer::before {
            content: '';
            position: absolute;
            top: -39px;
            left: 0;
            width: 100%;
            height: 39px;
            background-color: #000000;
            z-index: -1;
        }

        .footer-inner {
            width: var(--content-width);
            padding: 0 var(--content-padding) 52px;
            margin-top: -39px;
            position: relative;
        }

        .footer-content {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 80px;
            margin-bottom: 80px;
            align-items: end;
        }

        .footer-hours h3,
        .footer-closed h3 {
            font-size: 16px;
            font-weight: 600;
            letter-spacing: 0.1em;
            color: #FFFFFF;
            margin-bottom: 16px;
            font-family: 'Hiragino Sans', sans-serif;
            line-height: 1.7em;
        }

        .footer-hours p,
        .footer-closed p {
            font-size: 24px;
            font-weight: 600;
            letter-spacing: 0.1em;
            color: #FFFFFF;
            line-height: 1.7em;
        }

        .footer-contact h3 {
            font-size: 18px;
            font-weight: 500;
            line-height: 2.22em;
            color: #000000;
            margin-bottom: 8px;
        }

        .footer-phone {
            font-size: 32px;
            font-weight: 500;
            letter-spacing: 0.1em;
            color: #000000;
            margin-bottom: 24px;
        }

        .footer-address {
            font-size: 18px;
            font-weight: 500;
            line-height: 2.22em;
            color: #000000;
        }

        .footer-logo {
            width: 145.92px;
            height: 380.16px;
            display: block;
            margin-bottom: -80px;
            margin-top: 5px;
        }

        .footer-image {
            position: absolute;
            width: 325px;
            height: 442px;
            left: calc(50% + 145.92px/2 + 204px);
            bottom: 0;
            object-fit: cover;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 32px;
            border-top: 0.5px solid rgba(255, 255, 255, 0.3);
        }

        .footer-copyright {
            font-size: 10px;
            font-weight: 300;
            color: #FFFFFF;
            font-family: 'Hiragino Sans', sans-serif;
            line-height: 1.5em;
        }

        .footer-pagetop {
            font-size: 10px;
            font-weight: 300;
            color: #FFFFFF;
            font-family: 'Hiragino Sans', sans-serif;
            text-decoration: none;
            line-height: 1.5em;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: opacity 0.3s;
        }

        .footer-pagetop:hover {
            opacity: 0.7;
        }

        .footer-pagetop::after {
            content: '↑';
            font-size: 14px;
        }

        /* レスポンシブ対応（SP版） - TOPページと同じ768px以下 */
        @media (max-width: 768px) {
            :root {
                --content-width: 100%;
                --content-padding: 20px;
            }

            html {
                width: 100%;
                overflow-x: hidden;
            }

            /* 全体設定 */
            body {
                min-width: 320px !important;
                width: 100% !important;
                max-width: 100vw !important;
                overflow-x: hidden;
            }

            /* 左右の背景拡張を無効化（SP版では不要） */
            body::before,
            body::after {
                display: none !important;
            }

            /* 全体の画像処理 */
            img {
                max-width: 100%;
                height: auto;
                display: block;
            }

            /* メインコンテンツ */
            .main-content {
                width: 100% !important;
                max-width: 100% !important;
                margin-top: 60px; /* SP版ヘッダーは60px */
            }

            .content-container {
                width: 100% !important;
                max-width: 100% !important;
                left: 0 !important;
                transform: none !important;
                margin-left: 0 !important;
                padding: 0 20px;
                position: relative;
                top: 40px !important;
            }

            /* ヘッダー */
            .news-header {
                height: 60px;
            }

            .news-header-content {
                padding: 0 20px;
                justify-content: space-between;
            }

            /* ロゴヘッダーを非表示 */
            .logo-header {
                display: none !important;
            }

            .news-logo {
                width: 80px;
            }

            .news-nav {
                display: none;
                position: fixed;
                top: 60px;
                left: 0;
                width: 100%;
                background-color: #000000;
                flex-direction: column;
                gap: 0;
                padding: 20px;
            }

            .news-nav.active {
                display: flex;
            }

            .news-nav a {
                font-size: 16px;
                padding: 15px 0;
                border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            }

            .news-header .hamburger {
                display: block;
                width: 30px;
                height: 20px;
                position: relative;
                cursor: pointer;
            }

            .news-header .hamburger span {
                display: block;
                width: 100%;
                height: 2px;
                background-color: #FFFFFF;
                position: absolute;
                left: 0;
                transition: 0.3s;
            }

            .news-header .hamburger span:nth-child(1) {
                top: 0;
            }

            .news-header .hamburger span:nth-child(2) {
                top: 9px;
            }

            .news-header .hamburger span:nth-child(3) {
                top: 18px;
            }

            /* 背景レイヤー */
            .back-5,
            .back-1,
            .back-4 {
                width: 100% !important;
                left: 0 !important;
                transform: none !important;
            }

            /* TOPへ戻る */
            .back-to-top,
            .back-to-top-line {
                left: 50% !important;
                transform: translateX(-50%) !important;
                margin-left: 0 !important;
            }

            /* フッター（TOPページと完全に同じSP版CSS） */
            footer {
                margin-top: 0;
                padding: 100px 0 40px;
            }

            /* SP版では黒背景の拡張を無効化 */
            footer::before {
                display: none;
            }

            .footer-inner {
                padding: 0 var(--content-padding) !important;
                margin-top: 0 !important;
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 0;
                width: 100%;
            }

            .footer-logo {
                position: relative;
                margin-bottom: 20px !important;
                width: 100px;
                height: auto;
                order: 2;
            }

            .footer-image {
                display: none !important;
            }

            .footer-content {
                width: 100%;
                display: flex !important;
                flex-direction: column;
                align-items: center;
                text-align: center;
                order: 1;
                gap: 20px;
                margin-top: 0 !important;
                margin-bottom: 0 !important;
                padding-top: 0 !important;
            }

            .footer-content > div {
                width: 100%;
                margin-top: 0 !important;
                margin-bottom: 0 !important;
                padding-top: 0 !important;
            }

            .footer-content > div:first-child {
                display: block !important;
                margin-top: 0 !important;
                padding-top: 0 !important;
                order: 1;
                visibility: visible !important;
            }

            .footer-content > div:last-child {
                display: block !important;
                order: 3;
                text-align: center;
            }

            .footer-hours,
            .footer-closed,
            .footer-contact,
            .footer-address {
                font-size: 12px;
                line-height: 2em;
            }

            .footer-address {
                display: none !important;
            }

            .footer-hours {
                display: block !important;
                margin-top: 0 !important;
                padding-top: 0 !important;
                visibility: visible !important;
            }

            .footer-closed {
                display: block !important;
                margin-top: 20px !important;
                visibility: visible !important;
            }

            .footer-contact {
                text-align: center !important;
                margin-bottom: 20px !important;
                width: 100% !important;
                max-width: 100% !important;
                display: flex !important;
                flex-direction: column !important;
                align-items: center !important;
                padding: 0 !important;
            }

            .footer-contact h3 {
                display: block !important;
                font-size: 14px !important;
                color: #FFFFFF !important;
                margin-bottom: 10px !important;
                font-weight: 600;
                width: 100% !important;
                text-align: center !important;
            }

            .footer-hours h3,
            .footer-closed h3 {
                display: block !important;
                font-size: 14px !important;
                color: #FFFFFF !important;
                margin-bottom: 10px !important;
                font-weight: 600;
            }

            .footer-hours p,
            .footer-closed p {
                display: block !important;
                font-size: 18px !important;
                color: #FFFFFF !important;
                font-weight: 600 !important;
                visibility: visible !important;
                opacity: 1 !important;
                height: auto !important;
                min-height: 20px !important;
                line-height: 1.5em !important;
                letter-spacing: normal !important;
                text-indent: 0 !important;
                word-spacing: normal !important;
                overflow: visible !important;
                white-space: normal !important;
            }

            .footer-phone {
                font-size: 18px !important;
                color: #FFFFFF !important;
                font-weight: 600;
                text-align: center;
                width: 100% !important;
                max-width: 100% !important;
                display: block !important;
                word-break: normal !important;
                overflow-wrap: normal !important;
                white-space: nowrap !important;
            }

            .footer-bottom {
                width: 100%;
                flex-direction: column;
                align-items: center;
                gap: 15px;
                order: 5;
                margin-top: 30px;
            }

            .footer-copyright {
                font-size: 10px;
                text-align: center;
            }

            .footer-pagetop {
                font-size: 12px;
            }

            /* 記事関連 */
            .page-title {
                font-size: 32px !important;
            }

            .article-title {
                font-size: 20px !important;
            }

            .article-body,
            .article-rich-content {
                font-size: 14px !important;
            }

            /* 画像関連 */
            .image-large {
                width: 100% !important;
                min-height: 0 !important;
                height: auto !important;
                display: block !important;
                background: none !important;
            }

            .image-small {
                width: 100% !important;
                min-height: 0 !important;
                height: auto !important;
                display: block !important;
                background: none !important;
            }

            .image-grid {
                flex-direction: column !important;
                gap: 20px !important;
            }

            #article-images-container {
                width: 100% !important;
            }
        }

        /* 極小スマホ対応（400px以下） - 余白をさらに縮める */
        @media (max-width: 400px) {
            :root {
                --content-padding: 15px;
            }

            .content-container {
                padding: 0 15px !important;
                top: 30px !important;
            }

            .page-title {
                font-size: 28px !important;
                margin-bottom: 48px !important;
            }

            .article-title {
                font-size: 18px !important;
                margin-bottom: 32px !important;
            }

            .article-date {
                margin-bottom: 20px !important;
            }

            .article-body,
            .article-rich-content {
                font-size: 13px !important;
                margin-bottom: 32px !important;
            }

            footer {
                padding: 80px 0 32px !important;
            }

            .footer-inner {
                padding: 0 15px !important;
            }

            .footer-content {
                gap: 16px !important;
            }

            .footer-closed {
                margin-top: 16px !important;
            }

            .footer-contact {
                margin-bottom: 16px !important;
            }

            .footer-bottom {
                margin-top: 24px !important;
                gap: 12px !important;
            }
        }

        /* 超極小スマホ対応（350px以下） - 余白をさらに縮める */
        @media (max-width: 350px) {
            .content-container {
                padding: 0 12px !important;
                top: 24px !important;
            }

            .page-title {
                font-size: 26px !important;
                margin-bottom: 40px !important;
            }

            .article-title {
                font-size: 17px !important;
                margin-bottom: 28px !important;
            }

            .article-date {
                margin-bottom: 16px !important;
                font-size: 14px !important;
            }

            .article-body,
            .article-rich-content {
                font-size: 13px !important;
                margin-bottom: 28px !important;
            }

            .article-rich-content h2 {
                font-size: 20px !important;
                margin: 32px 0 16px !important;
            }

            .article-rich-content h3 {
                font-size: 16px !important;
                margin: 24px 0 12px !important;
            }

            footer {
                padding: 64px 0 28px !important;
            }

            .footer-inner {
                padding: 0 12px !important;
            }

            .footer-content {
                gap: 12px !important;
            }

            .footer-closed {
                margin-top: 12px !important;
            }

            .footer-contact {
                margin-bottom: 12px !important;
            }

            .footer-bottom {
                margin-top: 20px !important;
                gap: 10px !important;
            }

            .footer-logo {
                width: 80px !important;
                margin-bottom: 16px !important;
            }
        }