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

        :root {
            --primary-color: #3498db;
            --primary-dark: #2980b9;
            --dark-gray: #2c3e50;
            --light-gray: #f5f5f5;
            --text-color: #2c3e50;
            --footer-text: #bdc3c7;
            --white: #ffffff;
        }

        body {
            font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            line-height: 1.8;
            color: var(--text-color);
            background-color: var(--white);
            font-weight: 400;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ヘッダー */
        header {
            background-color: var(--white);
            padding: 20px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0,0,0,0.08);
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }

        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo img {
            height: 50px;
            width: auto;
        }

        nav ul {
            display: flex;
            list-style: none;
            gap: 40px;
            align-items: center;
        }

        nav a {
            color: var(--dark-gray);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all 0.3s;
            position: relative;
        }

        nav a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary-color);
            transition: width 0.3s;
        }

        nav a:hover {
            color: var(--primary-color);
        }

        nav a:hover::after {
            width: 100%;
        }

        /* ヒーローセクション */
        .hero {
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
            color: white;
            padding: 120px 0 100px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: 
                radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
            pointer-events: none;
        }

        .hero .container {
            position: relative;
            z-index: 1;
        }

        .hero h1 {
            font-size: 3.2rem;
            margin-bottom: 25px;
            font-weight: 900;
            line-height: 1.3;
            letter-spacing: 0.02em;
            text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }

        .hero p {
            font-size: 1.3rem;
            margin-bottom: 45px;
            opacity: 0.95;
            font-weight: 400;
            letter-spacing: 0.03em;
        }

        .hero-buttons {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-block;
            padding: 18px 50px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 700;
            font-size: 1.1rem;
            transition: all 0.3s;
            cursor: pointer;
            border: none;
            letter-spacing: 0.05em;
        }

        .btn-primary {
            background-color: white;
            color: var(--primary-color);
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.3);
        }

        /* セクション共通 */
        section {
            padding: 100px 0;
        }

        .section-title {
            text-align: center;
            font-size: 2.5rem;
            margin-bottom: 20px;
            color: var(--dark-gray);
            font-weight: 900;
            letter-spacing: 0.02em;
            position: relative;
            padding-bottom: 25px;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
            border-radius: 2px;
        }

        .section-subtitle {
            text-align: center;
            font-size: 1.15rem;
            margin-top: 30px;
            margin-bottom: 60px;
            color: #666;
            font-weight: 400;
            letter-spacing: 0.02em;
            line-height: 1.9;
        }

        /* 問題提起セクション */
        .problems {
            background-color: var(--light-gray);
        }

        .problems-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-top: 60px;
        }

        .problem-card {
            background: white;
            padding: 40px 30px;
            border-radius: 12px;
            box-shadow: 0 3px 15px rgba(0,0,0,0.08);
            transition: all 0.3s ease;
            text-align: center;
        }

        .problem-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.12);
        }

        .problem-icon {
            font-size: 2.5rem;
            margin-bottom: 20px;
        }

        .problem-card h3 {
            color: var(--dark-gray);
            margin-bottom: 15px;
            font-size: 1.2rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            line-height: 1.6;
            min-height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .problem-card p {
            color: #666;
            line-height: 1.8;
            font-weight: 400;
            letter-spacing: 0.01em;
            font-size: 0.95rem;
        }

        /* 解決策セクション */
        .solution {
            background: white;
        }

        .solution-content {
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }

        .solution-features {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            margin-top: 60px;
            max-width: 900px;
            margin-left: auto;
            margin-right: auto;
        }

        .feature-box {
            text-align: center;
            padding: 30px 20px;
        }

        .feature-icon {
            font-size: 3rem;
            margin-bottom: 20px;
        }

        .feature-box h3 {
            font-size: 1.2rem;
            margin-bottom: 15px;
            color: var(--dark-gray);
            font-weight: 700;
            letter-spacing: 0.02em;
            min-height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .feature-box p {
            color: #666;
            line-height: 1.8;
            font-weight: 400;
            letter-spacing: 0.01em;
            font-size: 0.95rem;
        }

        /* 標的型メール攻撃の事例セクション */
        .case-studies {
            background: white;
        }

        .case-studies-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 60px;
        }

        .case-study-card {
            background: var(--light-gray);
            padding: 40px 30px;
            border-radius: 12px;
            box-shadow: 0 3px 15px rgba(0,0,0,0.08);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .case-study-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.12);
            background: white;
        }

        .case-study-icon {
            font-size: 3rem;
            margin-bottom: 20px;
            text-align: center;
        }

        .case-study-card h3 {
            color: var(--dark-gray);
            margin-bottom: 20px;
            font-size: 1.3rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            text-align: center;
        }

        .case-study-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .case-study-description-wrapper {
            flex: 0 0 auto;
        }

        .case-study-description {
            color: #555;
            line-height: 1.8;
            font-weight: 400;
            letter-spacing: 0.01em;
            font-size: 0.95rem;
            margin: 0;
        }

        .case-study-details-wrapper {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            margin-top: 20px;
        }

        .case-study-details {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .case-study-details li {
            padding: 10px 0;
            padding-left: 30px;
            position: relative;
            color: #666;
            line-height: 1.7;
            font-size: 0.9rem;
        }

        .case-study-details li:before {
            content: "⚠️";
            position: absolute;
            left: 0;
            font-size: 1rem;
        }

        .case-studies-warning {
            margin-top: 50px;
            padding: 30px;
            background: rgba(231, 76, 60, 0.05);
            border-left: 4px solid #e74c3c;
            border-radius: 8px;
            text-align: left;
        }

        .case-studies-warning p {
            color: #555;
            line-height: 1.9;
            font-size: 1.05rem;
            margin: 0;
            text-indent: 0;
        }

        .case-studies-warning strong {
            color: var(--dark-gray);
            font-weight: 700;
        }

        /* 機能紹介セクション */
        .features {
            background-color: var(--light-gray);
        }

        .features-grid {
            display: flex;
            flex-direction: column;
            gap: 120px;
            margin-top: 80px;
        }

        .feature-card {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 80px;
            align-items: center;
            position: relative;
        }

        .feature-card:nth-child(even) {
            direction: rtl;
        }

        .feature-card:nth-child(even) > * {
            direction: ltr;
        }

        .feature-image-wrapper {
            width: 100%;
            height: 500px;
            position: relative;
            overflow: visible;
            background: transparent;
        }

        .feature-image-slider {
            position: relative;
            width: 100%;
            height: 100%;
            overflow: hidden;
        }

        .feature-image-slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0;
            transition: opacity 0.5s ease;
        }

        .feature-image-slide.active {
            opacity: 1;
            position: relative;
        }

        .feature-image-slide img {
            width: 100%;
            height: 100%;
            object-fit: contain;
            display: block;
            transition: transform 0.5s ease;
            filter: drop-shadow(0 20px 40px rgba(0,0,0,0.1));
            cursor: pointer;
        }

        .feature-card:hover .feature-image-slide.active img {
            transform: translateY(-10px);
            filter: drop-shadow(0 30px 60px rgba(0,0,0,0.15));
        }

        .feature-image-nav {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            background: rgba(255, 255, 255, 0.95);
            border: none;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: var(--primary-color);
            transition: all 0.3s ease;
            z-index: 10;
            box-shadow: 0 4px 12px rgba(0,0,0,0.15);
            font-weight: 300;
            line-height: 1;
        }

        .feature-image-nav:hover {
            background: white;
            box-shadow: 0 6px 16px rgba(52, 152, 219, 0.3);
            transform: translateY(-50%) scale(1.15);
            color: #2980b9;
        }

        .feature-image-nav.prev {
            left: 20px;
        }

        .feature-image-nav.next {
            right: 20px;
        }

        .feature-image-dots {
            position: absolute;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 10px;
            z-index: 10;
        }

        .feature-image-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.6);
            border: 2px solid rgba(255, 255, 255, 0.8);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .feature-image-dot:hover {
            background: rgba(255, 255, 255, 0.9);
            transform: scale(1.2);
        }

        .feature-image-dot.active {
            background: white;
            width: 28px;
            border-radius: 4px;
            border-color: white;
        }

        .feature-image-single {
            width: 100%;
            height: 500px;
            display: block;
            overflow: visible;
            background: transparent;
            position: relative;
        }

        .feature-image-single img {
            width: 100%;
            height: 100%;
            object-fit: contain;
            display: block;
            transition: transform 0.5s ease;
            filter: drop-shadow(0 20px 40px rgba(0,0,0,0.1));
            cursor: pointer;
        }

        .feature-card:hover .feature-image-single img {
            transform: translateY(-10px);
            filter: drop-shadow(0 30px 60px rgba(0,0,0,0.15));
        }

        .feature-content {
            padding: 0;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .feature-content h3 {
            font-size: 2rem;
            margin-bottom: 30px;
            color: var(--dark-gray);
            font-weight: 700;
            letter-spacing: 0.02em;
            line-height: 1.3;
        }

        .feature-content ul {
            list-style: none;
            margin-top: 0;
            flex: 1;
        }

        .feature-content li {
            padding: 15px 0;
            padding-left: 40px;
            position: relative;
            color: #555;
            line-height: 2;
            font-size: 1.05rem;
            transition: color 0.3s ease;
        }

        .feature-content li:before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--primary-color);
            font-weight: bold;
            font-size: 1.2rem;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(52, 152, 219, 0.1);
            border-radius: 50%;
        }

        .feature-card:hover .feature-content li {
            color: #333;
        }

        /* メリットセクション */
        .benefits {
            background: white;
        }

        .benefits-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 10px;
            margin-top: 60px;
        }

        .benefit-card {
            text-align: center;
            padding: 35px 12px;
            background: var(--light-gray);
            border-radius: 12px;
            transition: all 0.3s ease;
        }

        .benefit-card:hover {
            background: white;
            box-shadow: 0 5px 20px rgba(0,0,0,0.1);
            transform: translateY(-5px);
        }

        .benefit-icon {
            font-size: 3rem;
            margin-bottom: 15px;
            flex-shrink: 0;
        }

        .benefit-card h3 {
            font-size: 1.2rem;
            margin-bottom: 12px;
            flex-shrink: 0;
            color: var(--dark-gray);
            font-weight: 700;
            letter-spacing: 0.02em;
            min-height: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .benefit-card p {
            flex-grow: 1;
            color: #666;
            line-height: 1.7;
            font-weight: 400;
            letter-spacing: 0.01em;
            font-size: 0.95rem;
        }

        /* 料金プランセクション */
        .pricing {
            background-color: var(--light-gray);
        }

        .pricing-content {
            max-width: 900px;
            margin: 0 auto;
        }

        .pricing-card {
            background: white;
            border-radius: 16px;
            padding: 50px 40px;
            box-shadow: 0 5px 25px rgba(0,0,0,0.1);
            margin-top: 60px;
            text-align: center;
        }

        .pricing-price {
            margin: 30px 0;
        }

        .pricing-price .price {
            font-size: 3.5rem;
            font-weight: 900;
            color: var(--primary-color);
            line-height: 1;
            margin-bottom: 10px;
        }

        .pricing-price .period {
            font-size: 1.2rem;
            color: #666;
            margin-left: 10px;
        }

        .pricing-price .tax {
            font-size: 0.9rem;
            color: #999;
            margin-top: 5px;
        }

        .pricing-features {
            list-style: none;
            margin: 40px 0;
            text-align: left;
            max-width: 400px;
            margin-left: auto;
            margin-right: auto;
        }

        .pricing-features li {
            padding: 15px 0;
            padding-left: 35px;
            position: relative;
            color: #555;
            line-height: 1.8;
            font-size: 1.05rem;
            border-bottom: 1px solid #f0f0f0;
        }

        .pricing-features li:last-child {
            border-bottom: none;
        }

        .pricing-features li:before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--primary-color);
            font-weight: bold;
            font-size: 1.3rem;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(52, 152, 219, 0.1);
            border-radius: 50%;
        }

        .pricing-note {
            margin-top: 30px;
            padding: 20px;
            background: rgba(52, 152, 219, 0.05);
            border-radius: 8px;
            color: #666;
            font-size: 0.95rem;
            line-height: 1.8;
        }

        .pricing-options {
            margin-top: 60px;
        }

        .pricing-options h3 {
            font-size: 1.5rem;
            color: var(--dark-gray);
            margin-bottom: 30px;
            text-align: center;
            font-weight: 700;
        }

        .options-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
            margin-top: 30px;
        }

        .option-card {
            background: white;
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 3px 15px rgba(0,0,0,0.08);
        }

        .option-card h4 {
            font-size: 1.2rem;
            color: var(--dark-gray);
            margin-bottom: 15px;
            font-weight: 700;
        }

        .option-card .price {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 10px;
        }

        .option-card .price-note {
            font-size: 0.9rem;
            color: #999;
        }

        .option-card p {
            color: #666;
            line-height: 1.7;
            font-size: 0.95rem;
            margin-top: 15px;
        }

        /* 運用フローセクション */
        .workflow {
            background-color: var(--light-gray);
        }

        .workflow-steps {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 10px;
            margin-top: 60px;
        }

        .step {
            background: white;
            padding: 35px 20px;
            border-radius: 12px;
            text-align: center;
            position: relative;
            transition: all 0.3s ease;
            box-shadow: 0 3px 15px rgba(0,0,0,0.08);
            min-width: 0;
            width: 100%;
            box-sizing: border-box;
        }

        .step:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.12);
        }

        .step-number {
            width: 55px;
            height: 55px;
            background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            font-weight: bold;
            margin: 0 auto 15px;
            box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
            flex-shrink: 0;
        }

        .step h3 {
            font-size: 1.15rem;
            margin-bottom: 12px;
            color: var(--dark-gray);
            font-weight: 700;
            letter-spacing: 0.02em;
            min-height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            word-break: keep-all;
            overflow-wrap: break-word;
            line-height: 1.5;
        }

        .step p {
            color: #666;
            line-height: 1.7;
            font-weight: 400;
            letter-spacing: 0.01em;
            font-size: 0.95rem;
            word-break: keep-all;
            overflow-wrap: break-word;
        }

        /* 報告率機能強調セクション */
        .report-rate-feature {
            background: linear-gradient(135deg, rgba(52, 152, 219, 0.05) 0%, rgba(41, 128, 185, 0.05) 100%);
            padding: 100px 0;
        }

        .report-rate-content {
            max-width: 900px;
            margin: 0 auto;
            text-align: center;
        }

        .report-rate-content h3 {
            font-size: 2rem;
            color: var(--dark-gray);
            margin-bottom: 30px;
            font-weight: 700;
        }

        .report-rate-content p {
            font-size: 1.15rem;
            color: #555;
            line-height: 2;
            margin-bottom: 40px;
        }

        .report-rate-features {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 50px;
            text-align: left;
        }

        .report-rate-item {
            background: white;
            padding: 30px 25px;
            border-radius: 12px;
            box-shadow: 0 3px 15px rgba(0,0,0,0.08);
            display: flex;
            flex-direction: column;
            min-height: 180px;
        }

        .report-rate-item h4 {
            font-size: 1.2rem;
            color: var(--primary-color);
            margin-bottom: 15px;
            font-weight: 700;
            flex-shrink: 0;
            position: relative;
            padding-left: 0;
        }

        .report-rate-item h4::before {
            content: "✓ ";
            display: inline-block;
            width: 1.2em;
        }

        .report-rate-item p {
            color: #666;
            line-height: 1.8;
            font-size: 0.95rem;
            margin-bottom: 0;
            flex: 1;
            padding-left: 1.5em;
        }

        /* セキュリティセクション */
        .security {
            background-color: var(--light-gray);
        }

        .security-features {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 60px;
        }

        .security-item {
            background: white;
            padding: 40px 30px;
            border-radius: 12px;
            box-shadow: 0 3px 15px rgba(0,0,0,0.08);
            text-align: center;
            transition: all 0.3s ease;
        }

        .security-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.12);
        }

        .security-item h3 {
            font-size: 1.3rem;
            color: var(--dark-gray);
            margin-bottom: 15px;
            font-weight: 700;
        }

        .security-item p {
            color: #666;
            line-height: 1.8;
            font-size: 0.95rem;
        }

        /* FAQセクション */
        .faq {
            background: white;
        }

        .faq-list {
            max-width: 900px;
            margin: 60px auto 0;
        }

        .faq-item {
            background: var(--light-gray);
            border-radius: 12px;
            padding: 30px;
            margin-bottom: 20px;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            background: white;
            box-shadow: 0 3px 15px rgba(0,0,0,0.08);
        }

        .faq-item h3 {
            font-size: 1.2rem;
            color: var(--dark-gray);
            margin-bottom: 15px;
            font-weight: 700;
            display: flex;
            align-items: center;
        }

        .faq-item h3::before {
            content: "Q.";
            color: var(--primary-color);
            font-size: 1.5rem;
            margin-right: 15px;
            font-weight: 900;
        }

        .faq-item p {
            color: #666;
            line-height: 1.8;
            font-size: 1rem;
            padding-left: 45px;
        }

        /* CTAセクション */
        .cta {
            background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
            color: white;
            text-align: center;
            padding: 80px 0;
        }

        .cta h2 {
            font-size: 2.5rem;
            margin-bottom: 20px;
            font-weight: 900;
            letter-spacing: 0.02em;
        }

        .cta p {
            font-size: 1.2rem;
            margin-bottom: 40px;
            opacity: 0.95;
            font-weight: 400;
        }

        /* お問い合わせフォームセクション */
        .contact {
            background: white;
        }

        .contact-form {
            max-width: 700px;
            margin: 0 auto;
            background: var(--light-gray);
            padding: 50px;
            border-radius: 12px;
        }

        /* Honeypot（ボット対策用の非表示フィールド） */
        .honeypot-field {
            position: absolute;
            left: -9999px;
            width: 1px;
            height: 1px;
            opacity: 0;
            pointer-events: none;
        }

        .form-group {
            margin-bottom: 25px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 700;
            color: var(--dark-gray);
            letter-spacing: 0.02em;
            font-size: 0.95rem;
        }

        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 15px 18px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-size: 1rem;
            font-family: inherit;
            transition: all 0.3s ease;
            background-color: white;
        }

        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 4px rgba(52, 152, 219, 0.1);
        }

        .form-group textarea {
            min-height: 150px;
            resize: vertical;
        }

        .form-submit {
            text-align: center;
        }

        .btn-submit {
            background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
            color: white;
            padding: 18px 70px;
            font-size: 1.1rem;
            cursor: pointer;
            box-shadow: 0 5px 20px rgba(52, 152, 219, 0.3);
        }

        .btn-submit:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 30px rgba(52, 152, 219, 0.4);
        }

        /* フッター */
        footer {
            background-color: var(--dark-gray);
            color: var(--footer-text);
            padding: 50px 0 20px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-section h3 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.1rem;
            font-weight: 700;
            letter-spacing: 0.02em;
        }

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

        .footer-section li {
            margin-bottom: 10px;
        }

        .footer-section a {
            color: var(--footer-text);
            text-decoration: none;
            transition: color 0.3s;
            font-size: 0.9rem;
        }

        .footer-section a:hover {
            color: white;
        }

        .footer-bottom {
            border-top: 1px solid #444;
            padding-top: 20px;
            text-align: center;
            color: var(--footer-text);
            font-size: 0.9rem;
        }

        /* レスポンシブ対応 */
        @media (max-width: 1024px) {
            .problems-grid,
            .benefits-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .case-studies-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .workflow-steps {
                grid-template-columns: repeat(3, 1fr);
            }

            .report-rate-features {
                grid-template-columns: 1fr;
            }

            .security-features {
                grid-template-columns: 1fr;
            }

            .solution-features {
                grid-template-columns: repeat(3, 1fr);
            }

            .features-grid {
                grid-template-columns: 1fr;
            }

            .options-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .hero {
                padding: 80px 0 60px;
            }

            .hero h1 {
                font-size: 2rem;
                line-height: 1.4;
            }

            .hero p {
                font-size: 1.1rem;
            }

            .section-title {
                font-size: 2rem;
            }

            section {
                padding: 60px 0;
            }

            nav ul {
                gap: 20px;
            }

            .problems-grid,
            .benefits-grid {
                grid-template-columns: 1fr;
            }

            .case-studies-grid {
                grid-template-columns: 1fr;
            }

            .workflow-steps {
                grid-template-columns: 1fr;
            }

            .report-rate-feature {
                padding: 60px 0;
            }

            .report-rate-content h3 {
                font-size: 1.5rem;
            }

            .report-rate-content p {
                font-size: 1rem;
            }

            .faq-item h3 {
                font-size: 1.1rem;
            }

            .faq-item p {
                font-size: 0.9rem;
                padding-left: 0;
            }

            .solution-features {
                grid-template-columns: 1fr;
            }

            .contact-form {
                padding: 30px 20px;
            }

            .footer-content {
                grid-template-columns: 1fr;
            }

            .pricing-card {
                padding: 40px 25px;
            }

            .pricing-price .price {
                font-size: 2.8rem;
            }

            .options-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 画像スライダー（レスポンシブ対応） */
        @media (max-width: 1024px) {
            .feature-card {
                grid-template-columns: 1fr;
                gap: 50px;
                direction: ltr !important;
            }

            .feature-card:nth-child(even) {
                direction: ltr;
            }

            .feature-image-wrapper,
            .feature-image-single {
                height: 400px;
            }

            .feature-content h3 {
                font-size: 1.75rem;
            }
        }

        @media (max-width: 768px) {
            .features-grid {
                gap: 80px;
                margin-top: 60px;
            }

            .feature-image-wrapper,
            .feature-image-single {
                height: 300px;
            }

            .feature-content h3 {
                font-size: 1.5rem;
                margin-bottom: 20px;
            }

            .feature-content li {
                font-size: 0.95rem;
                padding: 12px 0;
                padding-left: 35px;
            }
        }

        /* ライトボックス（画像拡大表示） */
        .lightbox {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.95);
            z-index: 9999;
            align-items: center;
            justify-content: center;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .lightbox.active {
            display: flex;
            opacity: 1;
        }

        .lightbox-content {
            position: relative;
            max-width: 90%;
            max-height: 90%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .lightbox-content img {
            max-width: 100%;
            max-height: 90vh;
            object-fit: contain;
            border-radius: 8px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
        }

        .lightbox-close {
            position: absolute;
            top: -50px;
            right: 0;
            background: rgba(255, 255, 255, 0.2);
            border: none;
            color: white;
            font-size: 32px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            line-height: 1;
            font-weight: 300;
        }

        .lightbox-close:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: scale(1.1);
        }

        @media (max-width: 768px) {
            .lightbox-close {
                top: 20px;
                right: 20px;
            }

            .lightbox-content {
                max-width: 95%;
                max-height: 85%;
            }
        }