.hero {
                background: linear-gradient(135deg, #e8f5e9 0%, #f1f8f4 100%);
                padding: 80px 5% 60px;
                text-align: center;
            }
            .hero h1 {
                font-size: 36px;
                color: #2e7d32;
                margin-bottom: 20px;
                max-width: 1200px;
                margin-left: auto;
                margin-right: auto;
            }

            /* コンテナ */
            .container {
                max-width: 1200px;
                margin: 0 auto;
                padding: 60px 5%;
            }
            .section {
                margin-bottom: 80px;
            }
            .section-title {
                font-size: 28px;
                color: #2e7d32;
                margin-bottom: 30px;
                padding-bottom: 15px;
                border-bottom: 3px solid #4caf50;
            }

            /* 概要 */
            .overview-grid {
                display: grid;
                grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
                gap: 30px;
            }
            .overview-card {
                background: white;
                padding: 30px;
                border-radius: 12px;
                box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            }
            .overview-card h3 {
                font-size: 18px;
                color: #2e7d32;
                margin-bottom: 15px;
                display: flex;
                align-items: center;
                gap: 10px;
            }
            .overview-card p {
                color: #555;
                line-height: 1.8;
            }
            .icon {
                width: 24px;
                height: 24px;
                color: #4caf50;
            }

            /* 事例タイトル */
            .case-title-section {
                margin-bottom: 60px;
            }
            .case-title-card {
                background: white;
                padding: 40px;
                border-radius: 12px;
                box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
                text-align: center;
            }
            .case-badge {
                display: inline-block;
                background: linear-gradient(135deg, #4caf50 0%, #66bb6a 100%);
                color: white;
                padding: 8px 20px;
                border-radius: 20px;
                font-size: 13px;
                font-weight: 600;
                margin-bottom: 20px;
            }
            .case-title-card h2 {
                font-size: 32px;
                color: #2e7d32;
                margin-bottom: 25px;
                font-weight: 700;
            }
            .case-meta-info {
                display: flex;
                gap: 30px;
                justify-content: center;
                flex-wrap: wrap;
            }
            .meta-item {
                display: flex;
                align-items: center;
                gap: 8px;
                color: #666;
                font-size: 14px;
            }
            .meta-item svg {
                color: #4caf50;
            }

            /* 課題 */
            .challenge-image-container {
                background: white;
                padding: 40px;
                border-radius: 12px;
                box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
                margin-bottom: 50px;
            }
            .challenge-image-container > h3 {
                font-size: 20px;
                color: #ff9800;
                margin-bottom: 28px;
                display: flex;
                align-items: center;
                gap: 10px;
                font-weight: 700;
            }
            .challenge-cards-grid {
                display: grid;
                grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
                gap: 20px;
            }
            .challenge-item-card {
                background: #fff8f0;
                border: 2px solid #ffe0b2;
                border-radius: 12px;
                padding: 24px;
                display: flex;
                gap: 14px;
                align-items: flex-start;
                transition: transform 0.2s;
            }
            .challenge-item-card:hover {
                transform: translateY(-3px);
            }
            .challenge-num {
                width: 32px;
                height: 32px;
                background: #ff9800;
                color: white;
                border-radius: 50%;
                display: flex;
                align-items: center;
                justify-content: center;
                font-weight: bold;
                font-size: 15px;
                flex-shrink: 0;
            }
            .challenge-item-card p {
                color: #555;
                font-size: 14px;
                line-height: 1.7;
            }
            .challenge-item-card strong {
                display: block;
                color: #e65100;
                margin-bottom: 6px;
                font-size: 15px;
            }

            /* ★ コンサルティングプロセス（フロー図） */
            .process-section {
                background: white;
                padding: 20px;
                border-radius: 12px;
                box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
                margin-bottom: 50px;
            }
            .process-section h3 {
                font-size: 24px;
                color: #2e7d32;
                margin-bottom: 36px;
                display: flex;
                align-items: center;
                gap: 12px;
            }

            .process-flow {
                display: flex;
                align-items: stretch;
                gap: 0;
                overflow-x: auto;
                padding-bottom: 8px;
            }

            .process-step {
                flex: 1;
                min-width: 160px;
                display: flex;
                flex-direction: column;
                align-items: center;
                position: relative;
            }

            .process-step-inner {
                background: linear-gradient(135deg, #e8f5e9 0%, #f1f8f4 100%);
                border: 2px solid #a5d6a7;
                border-radius: 12px;
                padding: 22px 16px;
                text-align: center;
                width: 100%;
                display: flex;
                flex-direction: column;
                align-items: center;
                gap: 10px;
                transition:
                    transform 0.2s,
                    box-shadow 0.2s;
            }

            .step-num {
                width: 28px;
                height: 28px;
                background: #4caf50;
                color: white;
                border-radius: 50%;
                display: flex;
                align-items: center;
                justify-content: center;
                font-weight: 700;
                font-size: 13px;
                flex-shrink: 0;
            }
            .step-icon svg {
                width: 32px;
                height: 32px;
                color: #2e7d32;
            }
            .step-title {
                font-size: 14px;
                font-weight: 700;
                color: #2e7d32;
                line-height: 1.4;
            }
            .step-desc {
                font-size: 12px;
                color: #666;
                line-height: 1.6;
            }
            .step-badge {
                display: inline-block;
                background: #e8f5e9;
                border: 1px solid #a5d6a7;
                border-radius: 20px;
                padding: 2px 10px;
                font-size: 11px;
                color: #2e7d32;
                font-weight: 600;
                margin-top: 4px;
            }

            /* ステップ間の矢印 */
            .process-arrow {
                display: flex;
                align-items: center;
                padding: 0 6px;
                flex-shrink: 0;
                margin-top: -20px;
            }
            .process-arrow svg {
                width: 22px;
                height: 22px;
                color: #81c784;
            }

            /* ★ 成果物カード */
            .deliverables-grid {
                display: grid;
                grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
                gap: 24px;
            }
            .deliverable-card {
                background: white;
                border-radius: 14px;
                padding: 32px;
                box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
                border-top: 5px solid #4caf50;
                position: relative;
                overflow: hidden;
                transition: transform 0.2s;
            }
            .deliverable-card:hover {
                transform: translateY(-4px);
                box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
            }
            .deliverable-card::after {
                content: "";
                position: absolute;
                bottom: -30px;
                right: -30px;
                width: 100px;
                height: 100px;
                background: rgba(76, 175, 80, 0.05);
                border-radius: 50%;
            }
            .deliverable-icon {
                width: 52px;
                height: 52px;
                background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
                border-radius: 12px;
                display: flex;
                align-items: center;
                justify-content: center;
                margin-bottom: 18px;
            }
            .deliverable-icon svg {
                width: 30px;
                height: 30px;
                color: #2e7d32;
            }
            .deliverable-card h4 {
                font-size: 18px;
                color: #2e7d32;
                margin-bottom: 12px;
                font-weight: 700;
            }
            .deliverable-card p {
                color: #555;
                font-size: 14px;
                line-height: 1.8;
                margin-bottom: 16px;
            }
            .deliverable-items {
                list-style: none;
            }
            .deliverable-items li {
                font-size: 13px;
                color: #555;
                padding: 5px 0;
                border-bottom: 1px solid #f5f5f5;
                display: flex;
                align-items: flex-start;
                gap: 8px;
                line-height: 1.6;
            }
            .deliverable-items li:last-child {
                border-bottom: none;
            }
            .deliverable-items li::before {
                content: "✓";
                color: #4caf50;
                font-weight: 700;
                flex-shrink: 0;
                margin-top: 1px;
            }

            /* ★ プロジェクトの流れ（タイムライン） */
            .solution-detailed {
                background: white;
                padding: 40px;
                border-radius: 12px;
                box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            }
            .solution-detailed h3 {
                font-size: 24px;
                color: #2e7d32;
                margin-bottom: 40px;
                display: flex;
                align-items: center;
                gap: 12px;
            }
            .solution-timeline {
                position: relative;
                padding-left: 50px;
            }
            .solution-timeline::before {
                content: "";
                position: absolute;
                left: 20px;
                top: 0;
                height: calc(100% - 55px);
                width: 3px;
                background: linear-gradient(180deg, #4caf50 0%, #81c784 100%);
            }
            .timeline-item {
                position: relative;
                margin-bottom: 35px;
                padding-bottom: 35px;
                border-bottom: 1px solid #f0f0f0;
            }
            .timeline-item:last-child {
                border-bottom: none;
                margin-bottom: 0;
                padding-bottom: 0;
            }
            .timeline-number {
                position: absolute;
                left: -50px;
                top: 0;
                width: 40px;
                height: 40px;
                background: linear-gradient(135deg, #4caf50 0%, #66bb6a 100%);
                border-radius: 50%;
                display: flex;
                align-items: center;
                justify-content: center;
                color: white;
                font-weight: bold;
                font-size: 16px;
                box-shadow: 0 4px 10px rgba(76, 175, 80, 0.3);
            }
            .timeline-content h4 {
                color: #2e7d32;
                font-size: 17px;
                margin-bottom: 12px;
                font-weight: 600;
            }
            .timeline-content p {
                color: #555;
                line-height: 1.8;
                font-size: 14px;
            }
            /* タイムラインのタグ */
            .timeline-tag {
                display: inline-block;
                background: #e8f5e9;
                color: #2e7d32;
                border-radius: 20px;
                padding: 2px 12px;
                font-size: 12px;
                font-weight: 600;
                margin-bottom: 10px;
            }

            /* ★ 次のステップ（ベンダー選定）バナー */
            .next-step-banner {
                background: linear-gradient(135deg, #1b5e20 0%, #2e7d32 100%);
                border-radius: 14px;
                padding: 36px 40px;
                display: flex;
                align-items: center;
                gap: 30px;
                margin-top: 40px;
            }
            .next-step-icon {
                width: 60px;
                height: 60px;
                background: rgba(255, 255, 255, 0.15);
                border-radius: 50%;
                display: flex;
                align-items: center;
                justify-content: center;
                flex-shrink: 0;
            }
            .next-step-icon svg {
                width: 34px;
                height: 34px;
                color: white;
            }
            .next-step-text h4 {
                font-size: 18px;
                color: white;
                margin-bottom: 6px;
                font-weight: 700;
            }
            .next-step-text p {
                font-size: 14px;
                color: rgba(255, 255, 255, 0.85);
                line-height: 1.7;
            }
            .next-step-arrow {
                margin-left: auto;
                flex-shrink: 0;
            }
            .next-step-arrow svg {
                width: 28px;
                height: 28px;
                color: rgba(255, 255, 255, 0.6);
            }

            /* CTA */
            .cta-section {
                background: linear-gradient(135deg, #e8f5e9 0%, #f1f8f4 100%);
                padding: 60px 5%;
                text-align: center;
            }
            .cta-content {
                max-width: 800px;
                margin: 0 auto;
            }
            .cta-section h2 {
                font-size: 32px;
                color: #2e7d32;
                margin-bottom: 20px;
            }
            .cta-section p {
                font-size: 16px;
                color: #555;
                margin-bottom: 30px;
            }
            .cta-buttons {
                display: flex;
                gap: 20px;
                justify-content: center;
                flex-wrap: wrap;
            }
            .btn {
                padding: 15px 40px;
                border-radius: 30px;
                text-decoration: none;
                font-weight: bold;
                font-size: 16px;
                transition: all 0.3s;
                display: inline-block;
            }
            .btn-primary {
                background: #4caf50;
                color: white;
            }
            .btn-primary:hover {
                background: #45a049;
                transform: translateY(-2px);
                box-shadow: 0 6px 20px rgba(76, 175, 80, 0.3);
            }
            .btn-secondary {
                background: white;
                color: #4caf50;
                border: 2px solid #4caf50;
            }
            .btn-secondary:hover {
                background: #4caf50;
                color: white;
            }

@media (max-width: 968px) {
                .overview-grid {
                    grid-template-columns: 1fr;
                }
                .challenge-cards-grid {
                    grid-template-columns: 1fr;
                }
                .card-content {
                    grid-template-columns: 1fr;
                }
                .case-title-card {
                    padding: 28px 20px;
                }
            }

            @media (max-width: 900px) {
                .process-flow {
                    flex-direction: column;
                    align-items: stretch;
                }
                .process-arrow {
                    transform: rotate(90deg);
                    margin: 4px auto;
                }
                .next-step-banner {
                    flex-direction: column;
                    text-align: center;
                }
                .next-step-arrow {
                    margin: 0 auto;
                }
            }

            @media (max-width: 768px) {
                nav {
                    padding: 14px 20px;
                }
                .logo img {
                    max-width: 120px;
                    margin-right: 10px;
                }
                .team-name {
                    font-size: 18px;
                }
                .nav-links {
                    display: none;
                }
                .hamburger {
                    display: flex;
                }
                .hero {
                    padding: 50px 5% 40px;
                }
                .hero h1 {
                    font-size: clamp(20px, 5vw, 28px);
                }
                .container {
                    padding: 24px 4%;
                }
                .section {
                    margin-bottom: 28px;
                }
                .section-title {
                    font-size: 22px;
                }
                .case-title-card h2 {
                    font-size: 22px;
                }
                .solution-timeline {
                    padding-left: 44px;
                }
                .solution-timeline::before {
                    left: 15px;
                    top: 0;
                }
                .timeline-number {
                    left: -44px;
                    width: 30px;
                    height: 30px;
                    font-size: 14px;
                }
                .challenge-image-container,
                .solution-detailed {
                    padding: 20px 16px;
                }
                .challenge-image-container h3,
                .challenge-image-container > h3 {
                    font-size: 16px;
                    gap: 8px;
                }
                .solution-detailed h3 {
                    font-size: 18px;
                }
                .challenge-item-card strong {
                    font-size: 13px;
                }
                .challenge-item-card p {
                    font-size: 12.5px;
                }
                .next-step-banner {
                    padding: 16px;
                }
                .cta-section {
                    padding: 40px 5%;
                }
                .cta-section h2 {
                    font-size: 22px;
                }
                .cta-section p {
                    font-size: 14px;
                }
                .cta-buttons {
                    flex-direction: column;
                    align-items: stretch;
                }
                .btn {
                    width: 100%;
                    text-align: center;
                    padding: 14px 24px;
                    font-size: 15px;
                }
                .tech-stack {
                    grid-template-columns: repeat(2, 1fr);
                }
                .breadcrumb {
                    font-size: 12px;
                }
                .hero-meta {
                    gap: 12px;
                    font-size: 13px;
                }
                .case-meta-info {
                    gap: 12px;
                }
                .footer-top {
                    grid-template-columns: 1fr;
                    gap: 40px;
                }
                .footer-nav-grid {
                    grid-template-columns: 1fr 1fr;
                    gap: 24px;
                }
                .footer-bottom {
                    flex-direction: column;
                    align-items: flex-start;
                    gap: 12px;
                }
                .footer-inner {
                    padding: 40px 24px 32px;
                }
            }

            @media (max-width: 480px) {
                .tech-stack {
                    grid-template-columns: 1fr;
                }
                .solution-timeline {
                    padding-left: 38px;
                }
                .solution-timeline::before {
                    left: 13px;
                    top: 0;
                }
                .timeline-number {
                    left: -38px;
                    width: 26px;
                    height: 26px;
                    font-size: 12px;
                }
                .case-title-card h2 {
                    font-size: 18px;
                }
            }