/* body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            line-height: 1.6;
            color: #1f2937;
            background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
            min-height: 100vh;
        } */

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 3rem 1rem 3rem 1rem;
        }

        /* Free Banner */
        .free-banner {
            background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
            color: white;
            text-align: center;
            padding: 1rem;
            margin-bottom: 2rem;
            border-radius: 1rem;
            box-shadow: 0 10px 25px rgba(59, 130, 246, 0.3);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.02); }
        }

        .free-banner h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: white;
        }

        .free-banner p {
            font-size: 1rem;
            opacity: 0.9;
        }

        .countdown {
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            padding: 0.25rem 0.75rem;
            border-radius: 9999px;
            font-weight: 600;
            margin-left: 0.5rem;
        }

        /* Header Styles */
        .header {
            text-align: center;
            margin-bottom: 4rem;
        }

        .header h1 {
            font-size: 3rem;
            font-weight: 700;
            color: #111827;
            margin-bottom: 1rem;
        }

        .header .free-highlight {
            color: #3b82f6;
            font-size: 3.5rem;
            display: block;
            margin-bottom: 0.5rem;
            text-shadow: 2px 2px 4px rgba(59, 130, 246, 0.3);
        }

        .header p {
            font-size: 1.25rem;
            color: #6b7280;
            max-width: 42rem;
            margin: 0 auto;
        }

        .header .sub-text {
            font-size: 1.125rem;
            color: #3b82f6;
            font-weight: 600;
            margin-top: 1rem;
        }

        /* Pricing Grid */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 2rem;
            margin-bottom: 4rem;
            padding-top: 2rem; /* この行を追加 */
        }

        /* Card Styles */
        .pricing-card {
            background: white;
            border-radius: 1rem;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
            position: relative;
            transition: all 0.3s ease;
            overflow: hidden;
        }

        .pricing-card:hover {
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
            transform: translateY(-5px);
        }

        .pricing-card.popular {
            border: 2px solid #3b82f6;
            transform: scale(1.05);
            box-shadow: 0 20px 40px rgba(59, 130, 246, 0.2);
        }

        .pricing-card.free-featured {
            border: 3px solid #3b82f6;
            transform: scale(1.08);
            box-shadow: 0 25px 50px rgba(59, 130, 246, 0.3);
            background: linear-gradient(135deg, #ffffff 0%, #f0fdf4 100%);
        }

        .popular-badge {
            position: absolute;
            top: -8px;
            left: 50%;
            transform: translateX(-50%);
            background: #3b82f6;
            color: white;
            padding: 0.5rem 1.5rem;
            border-radius: 9999px;
            font-size: 0.875rem;
            font-weight: 600;
        }

        .free-badge {
            position: absolute;
            top: -8px;
            left: 50%;
            transform: translateX(-50%);
            background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
            color: white;
            padding: 0.5rem 1.5rem;
            border-radius: 9999px;
            font-size: 0.875rem;
            font-weight: 600;
            animation: glow 2s ease-in-out infinite alternate;
        }

        @keyframes glow {
            from { box-shadow: 0 0 10px rgba(59, 130, 246, 0.5); }
            to { box-shadow: 0 0 20px rgba(59, 130, 246, 0.8); }
        }

        .card-header {
            padding: 2rem 2rem 1rem;
            text-align: center;
        }

        .card-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: #111827;
            margin-bottom: 0.5rem;
        }

        .card-description {
            color: #6b7280;
            margin-bottom: 1.5rem;
        }

        .price {
            font-size: 2.5rem;
            font-weight: 700;
            color: #111827;
        }

        .price.free {
            color: #3b82f6;
            font-size: 3rem;
        }

        .price-period {
            color: #6b7280;
            font-size: 1rem;
        }

        .original-price {
            text-decoration: line-through;
            color: #9ca3af;
            font-size: 1.5rem;
            margin-right: 0.5rem;
        }

        .free-period {
            background: #dbeafe;
            color: #1e40af;
            padding: 0.25rem 0.75rem;
            border-radius: 9999px;
            font-size: 0.875rem;
            font-weight: 600;
            margin-top: 0.5rem;
            display: inline-block;
        }

        .card-content {
            padding: 0 2rem 2rem;
        }

        .features-list {
            list-style: none;
            margin-bottom: 2rem;
        }

        .feature-item {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-bottom: 0.75rem;
        }

        .feature-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
        }

        .feature-icon.check {
            color: #3b82f6;
        }

        .feature-icon.x {
            color: #9ca3af;
        }

        .feature-item.disabled {
            opacity: 0.5;
        }

        .cta-button {
            width: 100%;
            padding: 1rem 2rem;
            border: none;
            border-radius: 0.5rem;
            font-size: 1.125rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .cta-button.primary {
            background: #3b82f6;
            color: white;
        }

        .cta-button.primary:hover {
            background: #2563eb;
        }

        .cta-button.free {
            background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
            color: white;
            font-size: 1.25rem;
            padding: 1.25rem 2rem;
            animation: buttonPulse 3s ease-in-out infinite;
        }

        @keyframes buttonPulse {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.05); }
        }

        .cta-button.free:hover {
            background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
            transform: scale(1.05);
        }

        .cta-button.outline {
            background: transparent;
            color: #3b82f6;
            border: 2px solid #3b82f6;
        }

        .cta-button.outline:hover {
            background: #3b82f6;
            color: white;
        }

        /* FAQ Section */
        .faq-section {
            max-width: 48rem;
            margin: 0 auto 4rem;
        }

        .faq-title {
            font-size: 2rem;
            font-weight: 700;
            text-align: center;
            margin-bottom: 3rem;
        }

        .faq-item {
            background: white;
            border-radius: 0.5rem;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
            margin-bottom: 1.5rem;
            overflow: hidden;
        }

        .faq-question {
            padding: 1.5rem;
            font-size: 1.125rem;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background-color 0.3s ease;
        }

        .faq-question:hover {
            background: #f9fafb;
        }

        .faq-answer {
            padding: 0 1.5rem 1.5rem;
            color: #6b7280;
            display: none;
        }

        .faq-item.active .faq-answer {
            display: block;
        }

        .faq-icon {
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
            color: white;
            border-radius: 1rem;
            padding: 3rem;
            text-align: center;
            box-shadow: 0 20px 40px rgba(59, 130, 246, 0.3);
        }

        .cta-title {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        .cta-description {
            font-size: 1.25rem;
            margin-bottom: 2rem;
            max-width: 42rem;
            margin-left: auto;
            margin-right: auto;
            opacity: 0.9;
        }

        .cta-buttons {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            align-items: center;
        }

        .cta-buttons .cta-button {
            width: auto;
            padding: 1rem 2rem;
            background: white;
            color: #3b82f6;
            font-weight: 700;
        }

        .cta-buttons .cta-button:hover {
            background: #f9fafb;
            transform: scale(1.05);
        }

        .cta-buttons .cta-button.outline {
            background: transparent;
            color: white;
            border: 2px solid white;
        }

        .cta-buttons .cta-button.outline:hover {
            background: white;
            color: #3b82f6;
        }

        /* Responsive Design */
        @media (min-width: 640px) {
            .header h1 {
                font-size: 4rem;
            }

            .header .free-highlight {
                font-size: 4.5rem;
            }

            .cta-buttons {
                flex-direction: row;
                justify-content: center;
            }
        }

        @media (max-width: 768px) {
            .pricing-card.popular,
            .pricing-card.free-featured {
                transform: none;
            }

            .container {
                padding: 2rem 1rem;
            }

            .header h1 {
                font-size: 2.5rem;
            }

            .header .free-highlight {
                font-size: 3rem;
            }

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

        /* Floating elements */
        .floating-free {
            position: fixed;
            bottom: 20px;
            right: 20px;
            background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
            color: white;
            padding: 1rem 1.5rem;
            border-radius: 50px;
            box-shadow: 0 10px 25px rgba(59, 130, 246, 0.4);
            font-weight: 600;
            z-index: 1000;
            animation: float 3s ease-in-out infinite;
            cursor: pointer;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0px); }
            50% { transform: translateY(-10px); }
        }