/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Noto Sans JP', 'Hiragino Sans', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', 'Meiryo', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
    font-weight: 400;
}

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

/* Typography */
h1, h2, h3, h4 {
    font-weight: 300;
    line-height: 1.3;
}

h2 {
    font-size: 2.4rem;
    margin-bottom: 2rem;
    font-weight: 300;
    letter-spacing: 0.02em;
}

h3 {
    font-size: 1.6rem;
    margin-bottom: 1rem;
}

h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

p {
    margin-bottom: 1rem;
    font-size: 1.0rem;
}

.section-title {
    text-align: center;
    color: #333;
    margin-bottom: 3rem;
    position: relative;
}

.section-title::after {
    content: '';
    width: 60px;
    height: 3px;
    background: #666;
    display: block;
    margin: 1rem auto 0;
}

.section-title {
    font-family: 'Helvetica Neue', 'Helvetica', 'Arial', sans-serif;
    font-weight: 300;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    font-size: 2.4rem;
}

.section-logo {
    height: 3.5rem;
    width: auto;
    vertical-align: middle;
    margin: 0 0.3rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    z-index: 1000;
    transition: all 0.3s ease;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-ie-ai {
    height: 40px;
    width: auto;
}

.logo-wellnest {
    height: 35px;
    width: auto;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #666;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #333 0%, #555 100%);
    color: white;
    padding: 120px 0 80px;
    margin-top: 70px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

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

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

.hero-logo {
    margin-bottom: 2rem;
    text-align: left;
}

.hero-logo-img {
    height: 60px;
    width: auto;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 400;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.6rem;
    margin-bottom: 3rem;
    opacity: 0.9;
}

.hero-image {
    margin: 3rem 0;
}

.before-after-img {
    max-width: 600px;
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.hero-cta {
    display: flex;
    gap: 1rem;
    justify-content: flex-start;
    flex-wrap: wrap;
}

/* Buttons */
.cta-button {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.0rem;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.cta-button.primary {
    background: #333;
    color: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.cta-button.primary:hover {
    background: #555;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

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

.cta-button.secondary:hover {
    background: white;
    color: #333;
}

/* Product Introduction */
.product-intro {
    padding: 80px 0;
    background: #f8f9fa;
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.intro-description {
    font-family: 'Helvetica Neue', 'Helvetica', 'Arial', sans-serif;
    font-size: 1.4rem;
    color: #555;
    margin-bottom: 2rem;
    text-align: center;
    line-height: 1.6;
    font-weight: 400;
}

.intro-panels {
    margin-top: 3rem;
}

.panel-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.panel-item {
    background: #fff;
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.panel-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.panel-content {
    margin-bottom: 1.5rem;
}

.panel-content h3 {
    color: #333;
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
}

.panel-content p {
    color: #666;
    font-size: 1.0rem;
    line-height: 1.5;
}

.panel-image {
    text-align: center;
}

.panel-image img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.intro-features {
    display: grid;
    gap: 1.5rem;
}

.feature-item {
    padding: 1.5rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.feature-item h3 {
    color: #333;
    margin-bottom: 0.5rem;
}

.intro-images {
    display: grid;
    gap: 1rem;
}

.intro-img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

/* Use Cases */
.use-cases {
    padding: 80px 0;
}

.workflow {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 4rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.workflow-step {
    text-align: center;
    flex: 1;
    min-width: 200px;
}

.step-number {
    width: 60px;
    height: 60px;
    background: #555;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    font-weight: 700;
    margin: 0 auto 1rem;
}

.workflow-arrow {
    font-size: 2rem;
    color: #666;
    font-weight: bold;
}

.before-after-comparison {
    margin: 4rem 0;
    text-align: center;
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

.comparison-item {
    padding: 2rem;
    border-radius: 10px;
}

.comparison-item:first-child {
    background: #f5f5f5;
    border-left: 4px solid #999;
}

.comparison-item:last-child {
    background: #f0f0f0;
    border-left: 4px solid #666;
}

.comparison-item ul {
    list-style: none;
    text-align: left;
}

.comparison-item li {
    padding: 0.5rem 0;
    position: relative;
    padding-left: 1.5rem;
    font-size: 1.0rem;
}

.comparison-item li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: #666;
    font-weight: bold;
}

.comparison-item h4 {
    color: #333;
    margin-bottom: 1rem;
    font-size: 1.4rem;
}

.use-case-scenarios {
    margin-top: 4rem;
}

.use-case-scenarios h3 {
    text-align: center;
    margin-bottom: 2rem;
}

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

.scenario-item {
    padding: 2rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.scenario-item h4 {
    color: #333;
    margin-bottom: 1rem;
    font-size: 1.4rem;
}

/* Comparison Table */
.comparison {
    padding: 80px 0;
    background: #f8f9fa;
}

.comparison-table {
    overflow-x: auto;
    margin-bottom: 3rem;
}

.comparison-table table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.comparison-table th,
.comparison-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #eee;
    vertical-align: top;
    font-size: 1.2rem;
}

.comparison-table th {
    background: #333;
    color: white;
    font-family: 'Helvetica Neue', 'Helvetica', 'Arial', sans-serif;
    font-weight: 400;
    text-align: left;
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.table-logo {
    height: 1.5rem;
    width: auto;
    vertical-align: middle;
}

.comparison-table td:first-child {
    text-align: left;
    font-weight: 600;
    background: #f9f9f9;
}

.comparison-icon {
    display: inline-block;
    width: 20px;
    height: 20px;
    margin-right: 8px;
    vertical-align: top;
    margin-top: 2px;
}

.comparison-text {
    display: inline-block;
    vertical-align: top;
}

.comparison-table tr.highlight {
    background: #f5f5f5;
}

.comparison-table tr.highlight td {
    font-weight: 600;
    color: #333;
}

.strengths {
    text-align: center;
}

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

.strength-item {
    padding: 2rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.strength-item h4 {
    color: #333;
    margin-bottom: 1rem;
    font-size: 1.4rem;
}

/* Testimonials */
.testimonials {
    padding: 80px 0;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 4rem;
}

.testimonial-item {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}

.author-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-top: auto;
}

.author-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
}

.author-text {
    text-align: left;
}

.author-text h4 {
    margin-bottom: 0.25rem;
    font-size: 1.2rem;
}

.testimonial-content {
    margin-bottom: 1.5rem;
    flex: 1;
}

.testimonial-content p {
    font-style: italic;
    color: #555;
    font-size: 1.0rem;
    line-height: 1.7;
}

.testimonial-author h4 {
    color: #333;
    margin-bottom: 0.25rem;
    font-size: 1.2rem;
}

.testimonial-author span {
    color: #888;
    font-size: 1rem;
}

.satisfaction-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-item h3 {
    font-size: 3rem;
    color: #555;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: #666;
    font-weight: 500;
}

/* Features */
.features {
    padding: 80px 0;
    background: #f8f9fa;
}

.tool-function-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin: 3rem 0;
}

.left-column {
    display: flex;
    flex-direction: column;
}

.right-column {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.function-section {
    
    text-align: center;
}

.function-section h3 {
    color: #333;
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    color: #666;
    font-size: 1.2rem;
    margin-bottom: 2rem;
    font-style: italic;
}

.function-image {
    text-align: center;
}

.tool-function-img {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.feature-demo {
    text-align: center;
}

.demo-steps {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
    margin-top: 2rem;
}

.demo-step {
    flex: 1;
    min-width: 200px;
}

.demo-step img {
    width: 100%;
    max-width: 200px;
    height: 150px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    margin-bottom: 1rem;
}

.demo-arrow {
    font-size: 2rem;
    color: #666;
    font-weight: bold;
}

/* Pricing */
.pricing {
    padding: 80px 0;
}

.pricing-table {
    margin-bottom: 3rem;
}

.pricing-table-content {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.pricing-table-content th {
    background: #333;
    color: white;
    padding: 1.5rem 1rem;
    text-align: center;
    font-family: 'Helvetica Neue', 'Helvetica', 'Arial', sans-serif;
    font-weight: 400;
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.pricing-table-content td {
    padding: 1.5rem 1rem;
    text-align: center;
    border-bottom: 1px solid #eee;
    font-size: 1.2rem;
}

.pricing-table-content tr:last-child td {
    border-bottom: none;
}

.pricing-table-content tr:hover {
    background: #f8f9fa;
}

.pricing-plan {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
    position: relative;
    transition: transform 0.3s ease;
}

.pricing-plan:hover {
    transform: translateY(-5px);
}

.pricing-plan.popular {
    background: linear-gradient(135deg, #333 0%, #555 100%);
    color: white;
    transform: scale(1.05);
}

.popular-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: #333;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 1.0rem;
    font-weight: 600;
}

.pricing-plan h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.price {
    margin-bottom: 2rem;
}

.amount {
    font-size: 2.5rem;
    font-weight: 700;
}

.period {
    font-size: 1rem;
    opacity: 0.8;
}

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

.plan-features li {
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.pricing-plan.popular .plan-features li {
    border-bottom-color: rgba(255, 255, 255, 0.2);
}

.plan-note {
    font-size: 1.0rem;
    opacity: 0.8;
    margin-top: 1rem;
}

.pricing-cta {
    text-align: center;
}

.pricing-cta p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    color: #666;
}

/* Contact */
.contact {
    padding: 80px 0;
    background: #f8f9fa;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-text p {
    font-size: 1.0rem;
    color: #555;
    margin-bottom: 2rem;
}

.contact-benefits {
    list-style: none;
}

.contact-benefits li {
    padding: 0.75rem 0;
    position: relative;
    padding-left: 2rem;
    color: #333;
}

.contact-benefits li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #666;
    font-weight: bold;
    font-size: 1.2rem;
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #333;
}

.required {
    color: #666;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e1e5e9;
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #666;
}

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

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 5px;
    font-weight: 500;
}

.form-message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Footer */
.footer {
    background: #333;
    color: white;
    padding: 2rem 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-logo-img {
    height: 35px;
    width: auto;
    margin-bottom: 0.5rem;
}

.footer-logo-wellnest {
    height: 35px;
    width: auto;
    margin-left: 1rem;
    margin-bottom: 0.5rem;
}

.footer-logo p {
    opacity: 0.8;
    margin: 0;
}

.footer-info {
    text-align: right;
}

.footer-info p {
    margin: 0;
    opacity: 0.8;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .header .container {
        padding: 0.75rem 15px;
    }
    
    .logo {
        gap: 0.5rem;
    }
    
    .logo-ie-ai {
        height: 32px;
    }
    
    .logo-wellnest {
        height: 28px;
    }
    
    .nav {
        gap: 1rem;
    }
    
    .nav-link {
        font-size: 0.9rem;
    }
    
    .hero {
        padding: 100px 0 60px;
        margin-top: 60px;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .hero-right {
        text-align: center;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-button {
        width: 100%;
        max-width: 300px;
        text-align: center;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .section-logo {
        height: 3rem;
        margin: 0 0.2rem;
    }
    
    .intro-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .panel-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .panel-item {
        padding: 1.5rem;
    }
    
    .workflow {
        flex-direction: column;
        gap: 2rem;
    }
    
    .workflow-arrow {
        transform: rotate(90deg);
        font-size: 1.5rem;
    }
    
    .comparison-grid {
        grid-template-columns: 1fr;
    }
    
    .testimonial-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .testimonial-item {
        padding: 1rem;
    }
    
    .author-icon {
        width: 45px;
        height: 45px;
    }
    
    .satisfaction-stats {
        gap: 2rem;
    }
    
    .demo-steps {
        flex-direction: column;
        gap: 1rem;
    }
    
    .demo-arrow {
        transform: rotate(90deg);
        font-size: 1.5rem;
    }
    
    .tool-function-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .right-column {
        gap: 2rem;
    }
    
    .function-section h3 {
        font-size: 1.5rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .pricing-table-content {
        font-size: 0.9rem;
    }
    
    .pricing-table-content th,
    .pricing-table-content td {
        padding: 1rem 0.5rem;
    }
    
    .pricing-plan.popular {
        transform: none;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-info {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .step-number {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
    
    .stat-item h3 {
        font-size: 2.5rem;
    }
    
    .pricing-plan {
        padding: 2rem 1.5rem;
    }
    
    .amount {
        font-size: 2rem;
    }
    
    .testimonial-grid {
        grid-template-columns: 1fr;
    }
    
    .author-icon {
        width: 40px;
        height: 40px;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mb-4 {
    margin-bottom: 2rem;
}

.mt-4 {
    margin-top: 2rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}