/* Casesページ専用のスタイル調整 */
        body {
            font-family: 'Poppins', 'Noto Sans JP', sans-serif !important;
            background-color: #FFFFFF !important;
            color: #333 !important;
        }

        /* オープニングアニメーション用初期非表示スタイル */
        #header,
        .about-hero-top-wrapper,
        .about-hero-subjp,
        .about-hero-title,
        .about-bg-text-wrapper,
        .about-hero-catch,
        .about-hero-en,
        .about-hero-image-wrapper {
            opacity: 0;
        }

        /* ヘッダー下左右テキストの文字色（下層ページ用：グレー #555555） */
        .about-hero-top-wrapper,
        .about-hero-top-wrapper .hero-top-group,
        .about-hero-top-wrapper .catchphrase-inner,
        .about-hero-top-wrapper .header-catchphrase,
        .about-hero-top-wrapper .header-catchphrase.jp,
        .about-hero-top-wrapper .header-catchphrase.en,
        .about-hero-top-wrapper .catchphrase-main,
        .about-hero-top-wrapper .catchphrase-sub,
        .about-hero-top-wrapper .en-sub,
        .about-hero-top-wrapper .en-main {
            color: #555555 !important;
            -webkit-text-fill-color: #555555 !important;
        }

        /* ヘッダー下左右テキストの完全ブロック化＆固定高さ（ベースラインシフト防止） */
        .about-hero-top-wrapper .header-catchphrase.jp,
        .about-hero-top-wrapper .header-catchphrase.en {
            display: flex !important;
            flex-direction: column !important;
            justify-content: flex-start !important;
            min-height: 48px !important;
            height: 48px !important;
            box-sizing: border-box !important;
        }

        .about-hero-top-wrapper .header-catchphrase.jp br,
        .about-hero-top-wrapper .header-catchphrase.en br {
            display: none !important;
        }

        .about-hero-top-wrapper .catchphrase-main {
            font-size: 16px !important;
            line-height: 1.4 !important;
            height: 23px !important;
            min-height: 23px !important;
            display: block !important;
            box-sizing: border-box !important;
        }

        .about-hero-top-wrapper .catchphrase-sub {
            font-size: 12px !important;
            line-height: 1.4 !important;
            height: 17px !important;
            min-height: 17px !important;
            display: block !important;
            box-sizing: border-box !important;
        }

        .about-hero-top-wrapper .en-sub {
            font-size: 12px !important;
            line-height: 1.4 !important;
            height: 17px !important;
            min-height: 17px !important;
            display: block !important;
            box-sizing: border-box !important;
        }

        .about-hero-top-wrapper .en-main {
            font-size: 16px !important;
            line-height: 1.4 !important;
            height: 23px !important;
            min-height: 23px !important;
            display: block !important;
            box-sizing: border-box !important;
        }

        /* Casesページ用タイピングカーソル（行の高さ・ベースラインに影響を与えない設計） */
        .about-hero .typing-cursor,
        .about-hero-top-wrapper .typing-cursor {
            display: inline-block;
            width: 2px;
            height: 1em;
            background-color: #24ABE4 !important;
            box-shadow: 0 0 5px rgba(36, 171, 228, 0.5) !important;
            vertical-align: middle;
            position: relative;
            top: -0.05em;
            margin-left: 2px;
            animation: cursorBlink 0.6s step-end infinite;
        }
        .about-hero-title .typing-cursor {
            width: 4px;
            height: 0.85em;
            background: linear-gradient(180deg, #24ABE4, #003B83);
            background-color: #003B83 !important;
            box-shadow: 0 0 8px rgba(36, 171, 228, 0.6) !important;
            vertical-align: middle;
            position: relative;
            top: -0.04em;
            margin-left: 4px;
        }

        @keyframes cursorBlink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0; }
        }

        /* 新しいAboutヒーローセクションのスタイル */
        .about-hero {
            padding: 220px 0 0;
            background: #FFFFFF;
            position: relative;
            overflow: hidden;
            min-height: 800px;
        }

        .about-hero-inner {
            max-width: 100%;
            padding: 0; /* paddingを0にリセットして、中のabout-innerをブラウザの100%幅基準にする */
            position: relative;
            /* z-index: 5; を削除して子要素 of z-index が外部と比較できるようにする */
        }

        /* 背景無限スクロールテキスト */
        .about-bg-text-wrapper {
            position: absolute;
            top: calc(40% - 90px);
            left: 0;
            transform: translateY(-50%);
            width: 100%;
            overflow: hidden;
            z-index: 1;
            /* 画像(0)より上、前面テキスト(10)より下 */
            pointer-events: none;
        }

        .about-bg-text-inner {
            display: flex;
            width: max-content;
            /* コンテンツの幅を正確に計算 */
            animation: aboutTicker 20s linear infinite;
            will-change: transform;
        }

        .about-bg-text-inner span {
            font-size: 400px;
            font-weight: 800;
            color: transparent;
            -webkit-text-stroke: 3px #EDEDED;
            line-height: 1;
            padding-right: 400px;
            /* スペース（ ）の代わりに正確なパディングを設定 */
            flex: 0 0 auto;
            /* 伸縮を防止 */
            letter-spacing: 0;
        }

        @keyframes aboutTicker {
            0% {
                transform: translateX(0);
            }

            100% {
                transform: translateX(-50%);
            }
        }

        .about-hero-header {
            position: relative;
            margin-bottom: 220px;
            /* タイトルと下のテキストの間隔を220pxに設定 */
            z-index: 10;
            /* 最前面 */
            padding: 0 80px; /* タイトルの左右余白をここに移行 */
            height: 206px;
            min-height: 206px;
            box-sizing: border-box;
        }

        .about-hero-subjp {
            font-size: 24px;
            font-weight: bold;
            color: #AEAEAE;
            margin-bottom: 10px;
            letter-spacing: 0.1em;
            line-height: 1.4;
            height: 34px;
            min-height: 34px;
            box-sizing: border-box;
        }

        .about-hero-title {
            font-size: 180px;
            font-weight: 800;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, #24ABE4, #003B83);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 0.9;
            white-space: nowrap;
            height: 162px;
            min-height: 162px;
            box-sizing: border-box;
        }

        .about-hero-main {
            margin-top: 0;
            /* ヘッダーのマージンと重複しないようにリセット */
        }

        .about-hero-content {
            position: relative;
            min-height: 500px;
            /* 画像の高さを考慮して確保 */
        }

        .about-hero-text {
            width: 56%;
            margin-left: 0; /* マージンを0にして、親の.about-innerの左端にピタッと揃える */
            position: relative;
            z-index: 10;
            /* 最前面 */
            min-height: 104px;
            box-sizing: border-box;
        }

        .about-hero-catch {
            font-size: 32px;
            font-weight: bold;
            background: linear-gradient(135deg, #24ABE4, #003B83);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 25px;
            line-height: 1.4;
            white-space: normal;
            min-height: 45px;
            box-sizing: border-box;
        }

        .about-hero-en {
            font-size: 24px;
            font-weight: 600;
            color: #555555;
            line-height: 1.4;
            letter-spacing: 0.05em;
            white-space: normal;
            min-height: 34px;
            box-sizing: border-box;
        }

        .about-hero-image-wrapper {
            position: absolute;
            right: 5%;
            top: -156px;
            /* タイトル(ABOUT US)の底辺から64px下の位置に調整 (64px - 220px) */
            z-index: 0;
            /* 最背面 */
        }

        .about-hero-img {
            width: 1045px;
            height: auto;
            display: block;
            box-shadow: 20px 20px 60px rgba(0, 0, 0, 0.05);
            max-width: none;
            /* 改行防止のため幅制限を解除（親コンテナがabsoluteなので） */
        }

        .about-inner {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 40px;
        }

        .grayscale {
            filter: grayscale(100%);
        }

        /* 現在のメニュー項目のグラデーション表示 */
        .current-menu-item a {
            background: linear-gradient(135deg, #24ABE4, #003B83);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .header-menu a {
            color: #333 !important;
            transition: color 0.3s ease !important;
        }

        .header-menu a:hover {
            color: #24ABE4 !important;
        }

        #header .contact-btn {
            background: linear-gradient(135deg, #24ABE4, #003B83) !important;
            color: #FFFFFF !important;
            text-decoration: none;
            border: none !important;
            position: relative !important;
            z-index: 1 !important;
            overflow: hidden !important;
            transition: none !important;
        }

        #header .contact-btn::before {
            content: "" !important;
            position: absolute !important;
            top: 0 !important;
            left: 0 !important;
            width: 100% !important;
            height: 100% !important;
            background: #24ABE4 !important;
            opacity: 0 !important;
            transition: opacity 0.4s ease !important;
            z-index: -1 !important;
        }

        #header .contact-btn:hover::before {
            opacity: 1 !important;
        }

        #header .contact-btn .contact-text,
        #header .contact-btn .contact-divider,
        #header .contact-btn .arrow-icon {
            position: relative !important;
            z-index: 1 !important;
        }

        #header .contact-divider {
            background-image: repeating-linear-gradient(to bottom, #FFFFFF, #FFFFFF 2px, transparent 2px, transparent 4px) !important;
            margin: 0 16px;
        }

        #header .arrow-icon {
            color: #FFFFFF !important;
        }

        #header .hamburger-btn span {
            background-color: #FFFFFF !important;
        }

        /* トップページからの複製グループのスタイル */
        .about-hero-top-wrapper {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 5;
            pointer-events: none;
        }

        .about-hero-top-wrapper .header-catchphrase {
            color: #555555 !important;
        }

        @media (max-width: 992px) {
            .about-hero {
                padding: 140px 0 0 !important;
                min-height: 360px !important;
            }
            .about-hero-inner {
                padding: 0 40px !important;
            }
            .about-hero-title {
                font-size: 100px !important;
            }
            .about-bg-text-inner span {
                font-size: 240px !important;
                padding-right: 240px !important;
            }
        }

        @media (max-width: 768px) {
            .about-hero-top-wrapper .header-catchphrase.jp,
            .about-hero-top-wrapper .header-catchphrase.en {
                min-height: 30px !important;
                height: auto !important;
            }
            .about-hero-top-wrapper .catchphrase-main {
                font-size: 12.8px !important;
                height: 18px !important;
                min-height: 18px !important;
            }
            .about-hero-top-wrapper .catchphrase-sub {
                font-size: 9.6px !important;
                height: 14px !important;
                min-height: 14px !important;
            }
            .about-hero-top-wrapper .en-sub {
                font-size: 9.6px !important;
                height: 14px !important;
                min-height: 14px !important;
            }
            .about-hero-top-wrapper .en-main {
                font-size: 12.8px !important;
                height: 18px !important;
                min-height: 18px !important;
            }

            .about-hero {
                padding: 260px 0 0 !important;
                min-height: auto !important;
            }

            .about-hero-inner {
                padding: 0 !important;
            }

            .about-hero-header {
                margin-bottom: 40px !important;
                text-align: left !important;
                padding: 0 20px !important;
                min-height: 85px !important;
            }

            .about-hero-title {
                font-size: 60px !important;
                text-align: left !important;
                line-height: 0.9 !important;
                min-height: 0.9em !important;
            }

            .about-hero-subjp {
                font-size: 16px !important;
                text-align: left !important;
                line-height: 1.4 !important;
                min-height: 1.4em !important;
            }

            .about-bg-text-inner span {
                font-size: 150px !important;
                -webkit-text-stroke: 1px #EDEDED !important;
            }

            .about-bg-text-wrapper {
                top: 324px !important; /* アバウトアスページと完全に一致 */
            }

            .about-hero-content {
                display: flex !important;
                flex-direction: column !important;
                gap: 40px !important;
                min-height: auto !important;
            }

            .about-hero-text {
                width: 100% !important;
                margin-left: 0 !important;
            }

            .about-hero-catch {
                font-size: 24px !important;
                white-space: normal !important;
            }

            .about-hero-en {
                font-size: 16px !important;
                white-space: normal !important;
            }

            .about-hero-image-wrapper {
                position: relative !important;
                top: 0 !important;
                right: auto !important;
                left: 0 !important;
                margin-top: 20px !important;
                width: 100vw !important;
                height: 100vw !important;
                aspect-ratio: 1 / 1 !important;
                margin-left: calc(50% - 50vw) !important;
                overflow: hidden !important;
                box-sizing: border-box !important;
            }

            .about-hero-img {
                position: absolute !important;
                top: -15% !important;
                left: 0 !important;
                width: 100% !important;
                height: 130% !important;
                max-width: none !important;
                object-fit: cover !important;
                object-position: center !important;
                display: block !important;
                box-shadow: none !important;
                will-change: transform !important;
            }

            .about-inner {
                padding: 0 20px !important;
            }

            #header .contact-btn:hover,
            #header .contact-btn:hover * {
                background: linear-gradient(135deg, #24ABE4, #003B83) !important;
                opacity: 1 !important;
                transform: none !important;
                transition: none !important;
                color: #FFFFFF !important;
                fill: #FFFFFF !important;
                stroke: #FFFFFF !important;
            }
        }

        /* コラム／事例セクション用アニメーション初期状態 */
        .column-categories,
        .column-categories-mobile-wrapper,
        .column-more-btn-wrapper {
            opacity: 1;
        }

        .column-item {
            opacity: 1;
        }

        .solutions-inner {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 40px;
        }

        /* Column categories design */
        .column-categories {
            display: flex;
            justify-content: flex-end;
            /* 右寄せ */
            gap: 40px;
            margin-bottom: 20px;
            /* 下に少し余白 */
        }

        .column-categories .category-item {
            font-size: 16px;
            cursor: pointer;
            color: #555555;
            transition: color 0.3s ease;
        }

        .column-categories .category-item:hover {
            color: #24ABE4;
        }

        .column-categories .category-item.active {
            color: #24ABE4;
        }

        .column-categories-mobile-wrapper {
            display: none;
        }

        .column-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 60px 40px;
            width: 100%;
        }

        .column-item {
            width: 100%;
            max-width: 100%;
            display: flex;
            flex-direction: column;
            box-sizing: border-box;
            text-decoration: none;
            transition: transform 0.3s ease;
        }

        .column-item.is-hidden {
            display: none !important;
        }

        .column-item:hover {
            transform: translateY(-10px);
        }

        .column-img-wrapper {
            width: 100%;
            aspect-ratio: 16 / 10;
            background-color: #E8E8E8;
            margin-bottom: 16px;
            overflow: hidden;
            position: relative;
            border-radius: 0;
        }

        .column-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .column-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 12px;
            min-height: 24px;
        }

        .column-text {
            font-size: 16px;
            color: #555555;
            margin: 0;
            line-height: 1.5;
        }

        @media (max-width: 992px) {
            .column-list {
                grid-template-columns: repeat(2, 1fr);
                gap: 40px 30px;
            }
        }

        @media (max-width: 768px) {
            .solutions-inner {
                padding: 0 20px !important;
                max-width: 100% !important;
                box-sizing: border-box;
            }

            .column-page-section {
                padding: 80px 0 60px !important;
                overflow: hidden;
            }

            .column-categories.desktop-only {
                display: none !important;
            }

            .column-categories-mobile-wrapper {
                display: block !important;
                position: relative;
                margin: 0 20px 40px !important;
                width: auto !important;
                box-sizing: border-box;
            }

            .column-categories-mobile {
                width: 100%;
                appearance: none;
                -webkit-appearance: none;
                padding: 12px 40px 12px 20px;
                font-family: 'Noto Sans JP', sans-serif;
                font-size: 15px;
                font-weight: 500;
                color: #333;
                background-color: #fff;
                border: 1px solid #E2DEDE;
                border-radius: 25px;
                outline: none;
                cursor: pointer;
                box-sizing: border-box;
            }

            .select-arrow {
                position: absolute;
                right: 16px;
                top: 50%;
                transform: translateY(-50%);
                pointer-events: none;
                color: #24ABE4;
            }

            .column-list {
                grid-template-columns: 1fr;
                gap: 48px;
                margin: 0 20px !important;
                width: auto !important;
                box-sizing: border-box;
            }

            .column-item {
                width: 100% !important;
                max-width: 100% !important;
                box-sizing: border-box;
            }

            .column-img-wrapper {
                width: 100% !important;
                max-width: 100% !important;
                box-sizing: border-box;
            }

            .cases-portfolio-section {
                padding: 60px 0 120px !important;
            }

            .concept-header {
                display: flex !important;
                flex-direction: row !important;
                align-items: center !important;
                flex-wrap: wrap !important;
                gap: 10px 15px !important;
                margin-bottom: 40px !important;
                width: 100% !important;
            }

            .concept-section-title {
                width: auto !important;
                font-size: 32px !important;
                font-weight: 800 !important;
                color: #555555 !important;
                letter-spacing: 0.05em !important;
                line-height: 1.2 !important;
                margin: 0 !important;
            }

            .concept-divider {
                font-size: 20px !important;
                color: #24ABE4 !important;
                font-weight: 300 !important;
                line-height: 1 !important;
            }

            .concept-section-sub {
                width: auto !important;
                font-size: 13px !important;
                font-weight: bold !important;
                color: #24ABE4 !important;
                letter-spacing: 0.1em !important;
                line-height: 1.4 !important;
            }

            .portfolio-container {
                gap: 30px;
            }

            .portfolio-top-left {
                gap: 30px;
            }

            .portfolio-item-title {
                font-size: 20px;
                margin-bottom: 12px;
            }

            .portfolio-item-desc {
                font-size: 16px;
                line-height: 1.8;
            }

            .portfolio-item-desc br {
                display: none;
            }

            .portfolio-img-overlap-wrap {
                padding-bottom: 20px;
            }

            .portfolio-img-720 {
                width: 82%;
            }

            .portfolio-img-500 {
                width: 58%;
                bottom: -20px;
            }

            .portfolio-service-item {
                padding: 32px 0;
            }

            .portfolio-service-header,
            .detail-label-group {
                display: flex !important;
                flex-direction: row !important;
                align-items: center !important;
                flex-wrap: wrap !important;
                gap: 10px 15px !important;
                margin-bottom: 12px !important;
            }

            .portfolio-service-title,
            .detail-label-en {
                width: auto !important;
                font-size: 32px !important;
                font-weight: 400 !important;
                color: #555555 !important;
                letter-spacing: 0.05em !important;
                line-height: 1 !important;
                white-space: nowrap !important;
                margin-bottom: 0 !important;
                order: 1 !important;
            }

            .portfolio-service-divider,
            .detail-label-divider {
                display: block !important;
                width: 2px !important;
                height: 24px !important;
                background-image: repeating-linear-gradient(to bottom, #AEAEAE, #AEAEAE 2px, transparent 2px, transparent 4px) !important;
                order: 2 !important;
                flex-shrink: 0 !important;
            }

            .portfolio-service-sub,
            .detail-label-jp {
                width: auto !important;
                font-size: 16px !important;
                font-weight: bold !important;
                color: #AEAEAE !important;
                letter-spacing: 0.1em !important;
                line-height: 1 !important;
                white-space: nowrap !important;
                order: 3 !important;
            }

            .portfolio-service-lead {
                font-size: 14px;
                line-height: 1.5;
                padding: 5px 12px;
            }

            .portfolio-service-text {
                font-size: 15px;
                line-height: 1.8;
            }

            .portfolio-service-text br {
                display: none;
            }
        }

        /* ポートフォリオセクション */
        .cases-portfolio-section {
            padding: 120px 0 240px;
            background: #FFFFFF;
        }

        .concept-header {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-bottom: 60px;
            min-height: 60px;
            box-sizing: border-box;
        }

        .concept-section-title {
            font-size: 48px;
            font-weight: 800;
            color: #555555;
            letter-spacing: 0.05em;
            line-height: 1.2;
            min-height: 1.2em;
            display: inline-flex;
            align-items: center;
        }

        .concept-divider {
            font-size: 30px;
            color: #24ABE4;
            font-weight: 300;
            opacity: 0;
            transition: opacity 0.4s ease;
        }

        .concept-section-sub {
            font-size: 14px;
            font-weight: bold;
            color: #24ABE4;
            letter-spacing: 0.1em;
            line-height: 1.4;
            min-height: 1.4em;
            display: inline-flex;
            align-items: center;
        }

        .concept-header .typing-cursor {
            display: inline-block;
            width: 2px;
            height: 1em;
            background-color: #24ABE4 !important;
            box-shadow: 0 0 5px rgba(36, 171, 228, 0.5) !important;
            vertical-align: middle;
            position: relative;
            top: -0.05em;
            margin-left: 3px;
            animation: cursorBlink 0.6s step-end infinite;
        }

        .concept-section-title .typing-cursor {
            width: 3px;
            height: 0.85em;
            background-color: #555555 !important;
            box-shadow: 0 0 5px rgba(85, 85, 85, 0.4) !important;
            top: -0.04em;
        }

        /* ポートフォリオコンテナレイアウト */
        .portfolio-container {
            display: flex;
            flex-direction: column;
            gap: 60px;
        }

        .portfolio-top-block {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 60px;
        }

        .portfolio-top-left {
            flex: 1;
            max-width: 500px;
            display: flex;
            flex-direction: column;
            gap: 42px;
        }

        .portfolio-text-item {
            display: flex;
            flex-direction: column;
        }

        .portfolio-item-title {
            font-size: 24px;
            font-weight: bold;
            background: linear-gradient(135deg, #24ABE4, #003B83);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.4;
            letter-spacing: 0.03em;
            margin: 0 0 16px 0;
        }

        .portfolio-item-desc {
            font-size: 16px;
            font-weight: normal;
            color: #555555;
            line-height: 1.8;
            letter-spacing: 0;
            margin: 0;
        }

        .portfolio-top-right {
            display: flex;
            justify-content: flex-end;
            position: relative;
            margin-right: calc(-1 * (max(0px, (100vw - 1240px) / 2 + 40px) - 5vw));
            flex: 1.2;
            min-width: 0;
        }

        .portfolio-img-overlap-wrap {
            position: relative;
            width: 100%;
            max-width: 820px;
            aspect-ratio: 820 / 760;
        }

        .portfolio-img-item {
            overflow: hidden;
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
            cursor: default;
            user-select: none;
            pointer-events: none;
        }

        .portfolio-img-720 {
            width: calc(720 / 820 * 100%);
            aspect-ratio: 720 / 520;
            background-color: #D9D9D9;
            position: absolute;
            left: 0;
            top: 0;
            z-index: 1;
        }

        .portfolio-img-500 {
            width: calc(500 / 820 * 100%);
            aspect-ratio: 500 / 500;
            background-color: #8C8C8C;
            position: absolute;
            right: 0;
            top: calc(260 / 760 * 100%);
            z-index: 2;
        }

        .portfolio-img-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            pointer-events: none;
        }

        @media (max-width: 1200px) {
            .portfolio-top-block {
                flex-direction: column;
                gap: 50px;
            }

            .portfolio-top-left {
                max-width: 100%;
            }

            .portfolio-top-right {
                width: 100%;
                margin-right: 0;
                justify-content: flex-end;
            }

            .portfolio-img-overlap-wrap {
                max-width: 680px;
            }
        }

        @media (max-width: 768px) {
            .portfolio-img-overlap-wrap {
                max-width: 100%;
            }
        }

        /* ポートフォリオ下部ブロック（TEMPLATES / VIDEO / LOGO / PHOTOGRAPHY） */
        .portfolio-bottom-block {
            display: flex;
            flex-direction: column;
            width: 100%;
            margin-top: 0;
        }

        .portfolio-service-item {
            padding: 48px 24px;
            border-bottom: 1px solid #E5E5E5;
            position: relative;
            cursor: pointer;
            transition: background-color 0.3s ease;
            box-sizing: border-box;
        }

        .portfolio-service-item:hover {
            background-color: #F5F5F5;
        }

        .portfolio-service-item:hover .portfolio-service-title {
            color: #24ABE4;
            transition: color 0.3s ease;
        }

        .portfolio-hover-preview {
            position: fixed;
            top: 0;
            right: max(40px, calc((100vw - 1240px) / 2 + 40px));
            width: 580px;
            aspect-ratio: 720 / 520;
            border-radius: 0;
            overflow: hidden;
            box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
            pointer-events: none;
            z-index: 9999;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.25s ease, visibility 0.25s;
        }

        .portfolio-hover-preview.is-active {
            opacity: 1;
            visibility: visible;
        }

        .portfolio-hover-preview img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            border-radius: 0;
            will-change: opacity;
        }

        .portfolio-service-img-mobile {
            display: none;
        }

        @media (max-width: 992px) {
            .portfolio-hover-preview {
                display: none !important;
            }

            .portfolio-service-item {
                padding: 40px 0 !important;
                cursor: default !important;
            }

            .portfolio-service-item:hover {
                background-color: transparent !important;
            }

            .portfolio-service-item:hover .portfolio-service-title {
                color: #555555 !important;
            }

            .portfolio-service-img-mobile {
                display: block;
                width: 80%;
                margin-left: auto;
                margin-top: 24px;
                aspect-ratio: 720 / 520;
                overflow: hidden;
                border-radius: 0;
            }

            .portfolio-service-img-mobile img {
                width: 100%;
                height: 100%;
                object-fit: cover;
                display: block;
            }
        }

        .portfolio-service-header {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-bottom: 12px;
        }

        .portfolio-service-title {
            font-size: 32px;
            font-weight: 400;
            color: #555555;
            letter-spacing: 0.05em;
            margin: 0;
            line-height: 1;
        }

        .portfolio-service-divider {
            width: 2px;
            height: 24px;
            background-image: repeating-linear-gradient(to bottom, #AEAEAE, #AEAEAE 2px, transparent 2px, transparent 4px);
            flex-shrink: 0;
        }

        .portfolio-service-sub {
            font-size: 16px;
            font-weight: bold;
            color: #AEAEAE;
            letter-spacing: 0.1em;
            line-height: 1;
        }

        .portfolio-service-body {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .portfolio-service-text {
            font-size: 16px;
            font-weight: normal;
            color: #555555;
            line-height: 1.8;
            letter-spacing: 0;
            margin: 0;
        }

        .portfolio-service-lead {
            display: inline-block;
            width: fit-content;
            font-size: 15px;
            font-weight: 700;
            color: #FFFFFF;
            line-height: 1.6;
            letter-spacing: 0.02em;
            margin: 0 0 6px 0;
            padding: 6px 16px;
            border-radius: 0;
            background: linear-gradient(135deg, #24ABE4, #003B83, #0077c8, #24ABE4);
            background-size: 300% 300%;
            animation: blueGradientAnim 6s ease infinite;
        }

        @keyframes blueGradientAnim {
            0% {
                background-position: 0% 50%;
            }
            50% {
                background-position: 100% 50%;
            }
            100% {
                background-position: 0% 50%;
            }
        }

        .portfolio-service-item:last-child {
            padding-bottom: 40px;
        }

        .portfolio-btn-wrapper {
            margin-top: 40px;
            display: flex;
            justify-content: center;
            width: 100%;
        }

        .portfolio-site-btn {
            display: inline-flex !important;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, #24ABE4, #003B83) !important;
            padding: 16px 40px !important;
            border-radius: 50px;
            color: #FFFFFF !important;
            text-decoration: none;
            transition: transform 0.3s ease, box-shadow 0.3s ease, opacity 0.3s ease;
            box-shadow: 0 8px 24px rgba(36, 171, 228, 0.25);
            width: auto;
        }

        .portfolio-site-btn:hover {
            opacity: 0.9 !important;
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(36, 171, 228, 0.35);
        }

        .portfolio-site-btn .contact-text {
            font-size: 16px;
            letter-spacing: 0.05em;
            color: #FFFFFF;
            white-space: nowrap;
        }

        .portfolio-site-btn .external-icon {
            stroke: #FFFFFF;
            width: 18px;
            height: 18px;
            display: inline-block;
            vertical-align: middle;
        }

        @media (max-width: 768px) {
            .portfolio-service-item:last-child {
                padding-bottom: 20px !important;
            }

            .portfolio-btn-wrapper {
                justify-content: center !important;
                margin: 30px auto 0 !important;
            }

            .portfolio-site-btn {
                width: 100%;
                max-width: 280px;
                padding: 14px 28px !important;
                margin: 0 auto !important;
            }
        }