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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background-color: #0f172a;
            color: #e2e8f0;
            line-height: 1.6;
        }

        header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: linear-gradient(to bottom, #1e293b, rgba(30, 41, 59, 0.8));
            backdrop-filter: blur(10px);
            border-bottom: 1px solid #334155;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }

        .header-container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 1rem 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            background: linear-gradient(to right, #06b6d4, #60a5fa, #a855f7);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            color: #cbd5e1;
            cursor: pointer;
            font-size: 1.5rem;
        }

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

        nav a {
            font-size: 0.875rem;
            color: #cbd5e1;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        nav a:hover {
            color: #06b6d4;
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }

            nav {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background-color: #1e293b;
                border-bottom: 1px solid #334155;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.3s ease;
            }

            nav.active {
                max-height: 400px;
            }

            nav ul {
                flex-direction: column;
                gap: 0.5rem;
                padding: 1.5rem;
            }

            nav a {
                display: block;
                padding: 0.5rem 0;
            }
        }

        .icon {
            height: 10px;
            width: 10px;
        }

        .icon img {
            height: 100px;
            width: 100px;
        }

        .services-grid .service-card {
            display: flex;
            flex-direction: column;
            /* 上から下に並べる */
            align-items: center;
            /* 横方向の中央揃え（アイコン・見出し共通） */
            justify-content: flex-start;
            /* 上寄せ */
            text-align: center;
            padding: 20px;
            box-sizing: border-box;
        }

        .services-grid .service-card .icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 100px;
            /* 必要に応じて調整 */
            height: 100px;
            /* 必要に応じて調整 */
            margin-bottom: 12px;
            flex-shrink: 0;
        }

        .services-grid .service-card .icon img {
            max-width: 100%;
            max-height: 100%;
            object-fit: contain;
            display: block;
        }

        .hero {
            position: relative;
            padding: 5rem 1.5rem;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 24rem;
            height: 24rem;
            background: radial-gradient(circle, rgba(6, 182, 212, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            filter: blur(100px);
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 24rem;
            height: 24rem;
            background: radial-gradient(circle, rgba(168, 85, 247, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            filter: blur(100px);
        }

        .hero-content {
            max-width: 56rem;
            margin: 0 auto;
            position: relative;
            z-index: 10;
            text-align: center;
        }

        .hero-content h2 {
            background: linear-gradient(to right, #06b6d4, #60a5fa, #a855f7);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero h2 {
            font-size: 3.5rem;
            font-weight: 700;
            margin-bottom: 1.5rem;
            line-height: 1.2;
        }

        .hero p {
            font-size: 1.25rem;
            color: #a0aec0;
            margin-bottom: 2rem;
        }

        .hero-buttons {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            justify-content: center;
        }

        @media (min-width: 640px) {
            .hero-buttons {
                flex-direction: row;
            }
        }

        .btn {
            padding: 0.75rem 2rem;
            border-radius: 0.375rem;
            font-weight: 600;
            text-decoration: none;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 1rem;
        }

        .btn-primary {
            background: linear-gradient(to right, #06b6d4, #3b82f6);
            color: #0f172a;
            box-shadow: 0 0 30px rgba(6, 182, 212, 0.3);
        }

        .btn-primary:hover {
            box-shadow: 0 0 50px rgba(6, 182, 212, 0.5);
        }

        .btn-secondary {
            border: 1px solid #475569;
            color: #27292b;
            background-color: rgb(179, 179, 179);
        }

        .btn-secondary:hover {
            border-color: #a855f7;
            color: #a855f7;
        }

        section {
            padding: 5rem 1.5rem;
        }

        .section-container {
            max-width: 1280px;
            margin: 0 auto;
        }

        section h3 {
            font-size: 2.25rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 4rem;
        }

        .bg-light {
            background-color: rgba(15, 23, 42, 0.5);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            margin-bottom: 3rem;
        }

        .service-card {
            background-color: rgba(30, 41, 59, 0.5);
            border: 1px solid #334155;
            border-radius: 0.5rem;
            padding: 1.5rem;
            text-align: center;
            transition: all 0.3s ease;
        }

        .service-card:hover {
            border-color: rgba(6, 182, 212, 0.5);
        }

        .service-card .icon {
            font-size: 2.25rem;
            margin-bottom: 1rem;
        }

        .service-card h4 {
            font-weight: 600;
            margin-bottom: 0.75rem;
        }

        .service-card p {
            font-size: 0.875rem;
            color: #a0aec0;
        }

        .strength-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
        }

        .strength-card {
            position: relative;
            background: linear-gradient(135deg, rgba(6, 182, 212, 0.05) 0%, rgba(168, 85, 247, 0.05) 100%);
            border: 1px solid #334155;
            border-radius: 0.5rem;
            padding: 2rem;
            transition: all 0.3s ease;
        }

        .strength-card:hover {
            border-color: rgba(168, 85, 247, 0.5);
        }

        .strength-card h4 {
            font-size: 1.5rem;
            font-weight: 700;
            background: linear-gradient(to right, #06b6d4, #a855f7);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1rem;
        }

        .strength-card p {
            color: #a0aec0;
        }

        .portfolio-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
            margin-bottom: 3rem;
        }

        .portfolio-item {
            background-color: #475569;
            border-radius: 0.5rem;
            height: 12rem;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            padding: 1rem;
            transition: all 0.3s ease;
        }

        .portfolio-item:hover {
            box-shadow: 0 0 30px rgba(6, 182, 212, 0.2);
        }

        .portfolio-item p {
            color: #a0aec0;
        }

        /* ポートフォリオフィルター */
        .portfolio-filters {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }

        .filter-btn {
            padding: 10px 24px;
            border: 2px solid #0ea5e9;
            background: white;
            color: #0ea5e9;
            border-radius: 25px;
            cursor: pointer;
            font-size: 14px;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .filter-btn:hover {
            background: #e0f2fe;
        }

        .filter-btn.active {
            background: linear-gradient(to right, #06b6d4, #3b82f6);
            color: white;
            box-shadow: 0 0 30px rgba(6, 182, 212, 0.3);
        }

        /* ポートフォリオグリッド */
        .portfolio-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
            margin-bottom: 40px;
        }

        .portfolio-card {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
            opacity: 1;
            transform: scale(1);
        }

        .portfolio-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
        }

        .portfolio-image {
            position: relative;
            width: 100%;
            height: 220px;
            overflow: hidden;
        }

        .portfolio-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .portfolio-card:hover .portfolio-image img {
            transform: scale(1.1);
        }

        .portfolio-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(to right, #06b6d4, #3b82f6);
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .portfolio-card:hover .portfolio-overlay {
            opacity: 1;
        }

        .view-detail {
            color: white;
            font-size: 16px;
            font-weight: 600;
        }

        .portfolio-content {
            padding: 24px;
        }

        .portfolio-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-bottom: 12px;
        }

        .tag {
            display: inline-block;
            padding: 4px 12px;
            background: #e0f2fe;
            color: #0369a1;
            border-radius: 12px;
            font-size: 12px;
            font-weight: 600;
        }

        .portfolio-content h4 {
            font-size: 18px;
            margin-bottom: 12px;
            color: #1e293b;
            line-height: 1.4;
        }

        .portfolio-description {
            font-size: 14px;
            color: #64748b;
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .portfolio-result {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .result-tag {
            display: inline-block;
            padding: 6px 12px;
            background: #fef3c7;
            color: #92400e;
            border-radius: 6px;
            font-size: 12px;
            font-weight: 700;
        }


        @media(max-width:768px) {
            .portfolio-filters {
                gap: 8px;
            }

            .filter-btn {
                padding: 8px 16px;
                font-size: 13px;
            }

            .portfolio-image {
                height: 180px;
            }

            .portfolio-content {
                padding: 20px;
            }

            .portfolio-content h4 {
                font-size: 16px;
            }
        }

        /* リンク */
        .center-link {
            text-align: center;
        }

        .link {
            color: #0ea5e9;
            text-decoration: none;
            font-weight: 600;
            font-size: 16px;
        }

        .link:hover {
            text-decoration: underline;
        }

        .process-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 3rem;
        }

        .process-item {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .process-circle {
            width: 5rem;
            height: 5rem;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(6, 182, 212, 0.2) 0%, rgba(168, 85, 247, 0.2) 100%);
            border: 1px solid #334155;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1rem;
            font-size: 1.5rem;
            font-weight: 700;
            color: #06b6d4;
        }

        .process-item h4 {
            font-weight: 600;
            margin-bottom: 0.5rem;
            text-align: center;
        }

        .process-item p {
            font-size: 0.875rem;
            color: #a0aec0;
            text-align: center;
        }

        .contact-section {
            text-align: center;
            margin-bottom: 3rem;
        }

        .contact-section h3 {
            margin-bottom: 1rem;
        }

        .contact-section p {
            color: #a0aec0;
            font-size: 1.1rem;
            margin-bottom: 2rem;
        }

        .contact-buttons {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            max-width: 32rem;
            margin: 0 auto;

        }

        .center-link {
            display: flex;
            justify-content: center;
        }

        .link {
            color: #06b6d4;
            text-decoration: none;
            font-weight: 500;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            transition: color 0.3s ease;
        }

        .link:hover {
            color: #0891b2;
        }

        .news-list {
            max-width: 800px;
            margin: 0 auto 2rem;
        }

        .news-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 1.25rem;
            background-color: rgba(30, 41, 59, 0.5);
            border: 1px solid #334155;
            border-radius: 0.5rem;
            margin-bottom: 1rem;
            transition: all 0.3s ease;
        }

        .news-item:hover {
            border-color: rgba(6, 182, 212, 0.5);
            transform: translateX(8px);
        }

        .news-date {
            color: #64748b;
            font-size: 0.875rem;
            font-weight: 600;
            min-width: 100px;
        }

        .news-tag {
            padding: 4px 12px;
            border-radius: 12px;
            font-size: 0.75rem;
            font-weight: 600;
            white-space: nowrap;
        }

        .news-tag.important {
            background: #fef3c7;
            color: #92400e;
        }

        .news-tag.new {
            background: #ddd6fe;
            color: #5b21b6;
        }

        .news-tag.campaign {
            background: #fce7f3;
            color: #9f1239;
        }

        .news-title {
            flex: 1;
            color: #e2e8f0;
        }

        @media (max-width: 640px) {
            .news-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.5rem;
            }

            .news-date {
                min-width: auto;
            }
        }

        footer {
            border-top: 1px solid #334155;
            background-color: #0f172a;
            padding: 2rem 1.5rem;
        }

        .footer-container {
            max-width: 1280px;
            margin: 0 auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer-section h4 {
            font-weight: 600;
            margin-bottom: 1rem;
        }

        .footer-section ul {
            list-style: none;
        }

        .footer-section a {
            color: #64748b;
            text-decoration: none;
            font-size: 0.875rem;
            transition: color 0.3s ease;
        }

        .footer-section a:hover {
            color: #06b6d4;
        }

        .footer-section li {
            margin-bottom: 0.5rem;
        }

        .footer-info {
            font-size: 0.875rem;
            color: #64748b;
            margin-bottom: 0.5rem;
        }

        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 2rem;
            text-align: center;
            color: #64748b;
            font-size: 0.875rem;
        }