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

:root {
    --primary-color: #4F46E5;
    --primary-dark: #4338CA;
    --secondary-color: #10B981;
    --text-dark: #1F2937;
    --text-gray: #6B7280;
    --bg-light: #F9FAFB;
    --bg-white: #FFFFFF;
    --border-color: #E5E7EB;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* ヘッダー */
.header {
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    font-size: 1.8rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-button {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.cta-button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.header-cta {
    padding: 0.5rem 1.25rem;
    font-size: 0.95rem;
}

/* ヒーローセクション */
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(180deg, #F9FAFB 0%, #FFFFFF 100%);
}

.hero-wrapper {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3rem;
    align-items: center;
}

.hero-content {
    text-align: left;
}

.hero-visual {
    position: relative;
}

.hero-image {
    width: 100%;
    max-width: 440px;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    animation: float 6s ease-in-out infinite;
    aspect-ratio: 440/280;
    object-fit: contain;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(102, 126, 234, 0.4); }
    70% { box-shadow: 0 0 0 15px rgba(102, 126, 234, 0); }
    100% { box-shadow: 0 0 0 0 rgba(102, 126, 234, 0); }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.hero-title .highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-gray);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.hero-cta {
    margin-bottom: 2rem;
}

.cta-button.primary {
    font-size: 1.1rem;
    padding: 1rem 2rem;
    background: var(--gradient-primary);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.cta-button.primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.cta-button.primary:hover::before {
    left: 100%;
}

.cta-note {
    margin-top: 0.75rem;
    font-size: 0.9rem;
    color: var(--text-gray);
}

.hero-features {
    display: flex;
    gap: 2rem;
    margin-top: 3rem;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    color: var(--text-dark);
}

.feature-icon {
    font-size: 1.25rem;
}

/* 課題セクション */
.problems {
    padding: 80px 0;
    background: var(--bg-white);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-dark);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.problem-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    transition: transform 0.3s ease;
}

.problem-card:hover {
    transform: translateY(-5px);
}

.problem-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.problem-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.problem-card p {
    color: var(--text-gray);
    line-height: 1.6;
}

/* ソリューションセクション */
.solution {
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea15 0%, #764ba215 100%);
}

.solution-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-gray);
    margin-top: 1rem;
}

.solution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 2rem;
}

.solution-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    position: relative;
    transition: all 0.3s ease;
}

.solution-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-5px);
}

.solution-image {
    width: 100%;
    height: auto;
    margin-top: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    aspect-ratio: 1280/800;
    object-fit: cover;
}

.solution-number {
    font-size: 3rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.solution-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.solution-card p {
    color: var(--text-gray);
    line-height: 1.6;
}

/* 機能セクション */
.features {
    padding: 80px 0;
    background: var(--bg-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 2rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.feature-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}

.feature-card.featured {
    grid-column: span 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
    padding: 0;
    overflow: hidden;
}

.feature-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 250px;
    aspect-ratio: 1280/800;
}

.feature-content {
    padding: 2rem;
}

.feature-icon-box {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-gray);
    line-height: 1.6;
}

/* 差別化セクション */
.differentiation {
    padding: 80px 0;
    background: var(--bg-light);
}

.diff-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 2rem;
}

.diff-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}

.diff-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.diff-badge {
    padding: 0.25rem 0.75rem;
    background: var(--gradient-primary);
    color: white;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.diff-card h3 {
    font-size: 1.25rem;
    color: var(--text-dark);
}

.diff-card p {
    color: var(--text-gray);
    line-height: 1.8;
}

/* 使い方セクション */
.how-to-use {
    padding: 80px 0;
    background: var(--bg-white);
}

.steps {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    margin-top: 3rem;
}

.step {
    flex: 1;
    text-align: center;
}

.step-number {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50px;
    font-weight: 700;
    margin-bottom: 1rem;
}

.step-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.step-content p {
    color: var(--text-gray);
    line-height: 1.6;
}

.step-arrow {
    font-size: 2rem;
    color: var(--primary-color);
}

/* 料金セクション */
.pricing {
    padding: 80px 0;
    background: linear-gradient(180deg, #F9FAFB 0%, #FFFFFF 100%);
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--bg-white);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem;
    position: relative;
    transition: all 0.3s ease;
}

.pricing-card.premium {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-xl);
    transform: scale(1.05);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: white;
    padding: 0.25rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.pricing-header {
    text-align: center;
    margin-bottom: 2rem;
}

.pricing-header h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
}

.price-amount {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
}

.price-unit {
    font-size: 1rem;
    color: var(--text-gray);
}

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

.pricing-features li {
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-gray);
}

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

.pricing-cta {
    display: block;
    width: 100%;
    padding: 1rem;
    background: var(--primary-color);
    color: white;
    text-align: center;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.pricing-cta:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.premium-cta {
    background: var(--gradient-primary);
}

.pricing-note {
    text-align: center;
    margin-top: 2rem;
    color: var(--text-gray);
}

/* ベネフィットセクション */
.benefits {
    padding: 80px 0;
    background: var(--bg-light);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.benefit-card {
    background: var(--bg-white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.benefit-before,
.benefit-after {
    flex: 1;
    text-align: center;
}

.benefit-before .label,
.benefit-after .label {
    display: block;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.benefit-before .label {
    color: var(--text-gray);
}

.benefit-after .label {
    color: var(--secondary-color);
}

.benefit-arrow {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.benefit-after strong {
    color: var(--secondary-color);
    font-size: 1.1rem;
}

/* FAQセクション */
.faq {
    padding: 80px 0;
    background: var(--bg-white);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 1.25rem;
    background: var(--bg-white);
    border: none;
    text-align: left;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s ease;
}

.faq-question:hover {
    background: var(--bg-light);
}

.faq-toggle {
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 1.25rem 1.25rem;
    color: var(--text-gray);
    line-height: 1.8;
}

/* 最終CTAセクション */
.final-cta {
    padding: 100px 0;
    background: var(--gradient-primary);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.cta-buttons {
    margin-bottom: 1.5rem;
}

.cta-button.final-primary {
    background: white;
    color: var(--primary-color);
    font-size: 1.1rem;
    padding: 1rem 2rem;
    font-weight: 700;
}

.cta-button.final-primary:hover {
    background: var(--bg-light);
}

.cta-features {
    display: flex;
    justify-content: center;
    gap: 2rem;
    font-size: 1rem;
    opacity: 0.95;
}

/* フッター */
.footer {
    padding: 3rem 0;
    background: var(--text-dark);
    color: white;
}

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

.footer-logo {
    font-size: 1.5rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
}

.footer-brand p {
    opacity: 0.8;
    font-size: 0.95rem;
}

.footer-copyright {
    opacity: 0.8;
    font-size: 0.9rem;
}

/* レスポンシブデザイン */
@media (max-width: 1024px) {
    .hero-wrapper {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .hero-visual {
        order: -1;
        max-width: 440px;
        margin: 0 auto;
    }
    
    .hero-features {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-features {
        flex-direction: column;
        gap: 1rem;
    }
    
    .feature-card.featured {
        grid-column: 1;
        grid-template-columns: 1fr;
    }
    
    .feature-image {
        max-height: 200px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .steps {
        flex-direction: column;
    }
    
    .step-arrow {
        transform: rotate(90deg);
    }
    
    .pricing-card.premium {
        transform: scale(1);
    }
    
    .benefit-card {
        flex-direction: column;
    }
    
    .benefit-arrow {
        transform: rotate(90deg);
    }
    
    .cta-features {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 1.5rem;
    }
    
    .diff-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .cta-button.primary {
        font-size: 1rem;
        padding: 0.75rem 1.5rem;
    }
    
    .problem-grid,
    .solution-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .solution-image {
        max-height: 300px;
        object-fit: contain;
    }
}