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

:root {
    --primary-color: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #EEF2FF;
    --secondary-color: #10B981;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --bg-light: #F9FAFB;
    --bg-white: #FFFFFF;
    --border-color: #E5E7EB;
    --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: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-white);
}

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

/* Navigation */
.nav {
    background: var(--bg-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

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

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding-bottom: 6rem;
}

.hero-content {
    text-align: center;
    padding: 4rem 0;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    opacity: 0.95;
}

.hero-description {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto 2rem;
    opacity: 0.9;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    padding: 0.875rem 2rem;
    border-radius: 0.5rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    display: inline-block;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: white;
    color: var(--primary-color);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

.btn-secondary:hover {
    background: white;
    color: var(--primary-color);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
}

.btn-large {
    padding: 1.25rem 3rem;
    font-size: 1.125rem;
}

/* Features Section */
.features {
    padding: 5rem 0;
    background: var(--bg-light);
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
}

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

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

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

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

/* About ChatGPT Section */
.about-chatgpt {
    padding: 5rem 0;
    background: white;
}

.about-chatgpt h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

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

.about-text p {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.about-text strong {
    color: var(--primary-color);
    font-weight: 600;
}

/* Models Section */
.models {
    padding: 5rem 0;
    background: var(--bg-light);
}

.models h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-subtitle {
    text-align: center;
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.models-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.model-card {
    background: white;
    padding: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 2px solid transparent;
}

.model-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.model-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.model-header h3 {
    font-size: 1.5rem;
    color: var(--text-primary);
}

.badge {
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--bg-light);
    color: var(--text-secondary);
}

.badge-new {
    background: #DBEAFE;
    color: #1E40AF;
}

.badge-premium {
    background: #FEF3C7;
    color: #92400E;
}

.model-provider {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.model-description {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.model-features {
    list-style: none;
    padding: 0;
}

.model-features li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
    border-top: 1px solid var(--border-color);
}

.model-features li:first-child {
    border-top: none;
}

/* Use Cases Section */
.use-cases {
    padding: 5rem 0;
    background: white;
}

.use-cases h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

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

.use-case-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 1rem;
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
}

.use-case-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.use-case-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

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

.use-case-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Pricing Section */
.pricing {
    padding: 5rem 0;
    background: var(--bg-light);
}

.pricing h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.pricing-toggle {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin: 2rem 0 3rem;
    font-weight: 500;
}

.switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: var(--primary-color);
}

input:checked + .slider:before {
    transform: translateX(26px);
}

.discount-badge {
    background: var(--secondary-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 600;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.pricing-card {
    background: white;
    padding: 2.5rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s, box-shadow 0.3s;
    border: 2px solid transparent;
    position: relative;
}

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

.pricing-card-featured {
    border-color: var(--primary-color);
    transform: scale(1.05);
}

.pricing-card-featured:hover {
    transform: scale(1.05) translateY(-5px);
}

.featured-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.pricing-card h3 {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.pricing-description {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    min-height: 48px;
}

.price {
    display: flex;
    align-items: baseline;
    margin-bottom: 0.5rem;
}

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

.price-period {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-left: 0.25rem;
}

.price-save {
    color: var(--secondary-color);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.pricing-card .btn {
    width: 100%;
    text-align: center;
    margin-bottom: 1.5rem;
}

.pricing-features {
    list-style: none;
    padding: 0;
}

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

.pricing-features li:first-child {
    border-top: none;
}

/* FAQ Section */
.faq {
    padding: 5rem 0;
    background: white;
}

.faq h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--text-primary);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    max-width: 1000px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 1rem;
}

.faq-item h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.faq-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* CTA Section */
.cta {
    padding: 5rem 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

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

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.cta p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-section h4 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.footer-section p {
    opacity: 0.8;
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer-section ul li a:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .nav-links {
        gap: 1rem;
    }

    .nav-links a {
        font-size: 0.875rem;
    }

    h2 {
        font-size: 2rem !important;
    }

    .features-grid,
    .models-grid,
    .use-cases-grid,
    .pricing-grid,
    .faq-grid {
        grid-template-columns: 1fr;
    }

    .pricing-card-featured {
        transform: scale(1);
    }

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

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.875rem;
    }

    .btn-large {
        padding: 1rem 2rem;
        font-size: 1rem;
    }

    /* SEO Content Responsive */
    .seo-article h2 {
        font-size: 1.75rem;
    }

    .seo-article h3 {
        font-size: 1.5rem;
        margin: 2rem 0 1rem;
    }

    .seo-intro,
    .example-item,
    .detail-card,
    .case {
        padding: 1.25rem;
    }

    .comparison-table {
        font-size: 0.8125rem;
    }

    .comparison-table th,
    .comparison-table td {
        padding: 0.75rem 0.5rem;
    }

    .code-example {
        padding: 1rem;
    }

    .code-example code {
        font-size: 0.8125rem;
    }

    .structure-item {
        flex-direction: column;
        gap: 1rem;
    }

    .structure-number {
        align-self: flex-start;
    }

    .cost-calculation {
        grid-template-columns: 1fr;
    }

    .conclusion {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .logo {
        font-size: 1.25rem;
    }

    .container {
        padding: 0 15px;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-buttons .btn {
        width: 100%;
    }
}

/* SEO Content Section */
.seo-content {
    padding: 5rem 0;
    background: white;
}

.seo-article {
    max-width: 900px;
    margin: 0 auto;
}

.seo-article h2 {
    font-size: 2.25rem;
    color: var(--text-primary);
    margin-bottom: 2rem;
    line-height: 1.3;
}

.seo-article h3 {
    font-size: 1.75rem;
    color: var(--text-primary);
    margin: 3rem 0 1.5rem;
    padding-top: 2rem;
    border-top: 2px solid var(--border-color);
}

.seo-article h4 {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin: 1.5rem 0 1rem;
}

.seo-intro {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 1rem;
    margin-bottom: 3rem;
    border-left: 4px solid var(--primary-color);
}

.seo-intro p {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin: 0;
}

.seo-article p {
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Comparison Table */
.comparison-table-wrapper {
    overflow-x: auto;
    margin: 2rem 0;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    font-size: 0.9375rem;
}

.comparison-table thead {
    background: var(--primary-color);
    color: white;
}

.comparison-table th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    white-space: nowrap;
}

.comparison-table tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: background 0.2s;
}

.comparison-table tbody tr:hover {
    background: var(--bg-light);
}

.comparison-table td {
    padding: 1rem;
    color: var(--text-secondary);
}

.comparison-table td strong {
    color: var(--text-primary);
}

.table-note {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-style: italic;
    margin-top: 0.5rem;
}

/* Examples Section */
.examples-section {
    margin: 2rem 0;
}

.example-item {
    margin-bottom: 2.5rem;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 1rem;
}

.example-item h4 {
    color: var(--primary-color);
    margin-top: 0;
}

.code-example {
    background: var(--text-primary);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin: 1rem 0;
    overflow-x: auto;
}

.code-example pre {
    margin: 0;
    font-family: 'Courier New', monospace;
}

.code-example code {
    color: #E6F0FF;
    font-size: 0.875rem;
    line-height: 1.6;
}

.example-note {
    background: white;
    padding: 1rem;
    border-left: 3px solid var(--secondary-color);
    border-radius: 0.5rem;
    margin-top: 1rem;
    font-size: 0.9375rem;
}

.example-note strong {
    color: var(--secondary-color);
}

/* Prompt Structure */
.prompt-structure {
    margin: 2rem 0;
}

.structure-item {
    display: flex;
    gap: 1.5rem;
    align-items: flex-start;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 1rem;
    margin-bottom: 1rem;
}

.structure-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
}

.structure-content {
    flex: 1;
}

.structure-content strong {
    display: block;
    color: var(--text-primary);
    font-size: 1.0625rem;
    margin-bottom: 0.5rem;
}

.structure-content p {
    margin: 0;
    font-size: 0.9375rem;
    color: var(--text-secondary);
    font-style: italic;
}

/* Model Details */
.model-details {
    margin: 2rem 0;
}

.detail-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 1rem;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--primary-color);
}

.detail-card h4 {
    color: var(--primary-color);
    margin-top: 0;
    margin-bottom: 1rem;
}

.detail-card p {
    margin-bottom: 1rem;
}

.detail-card p:last-child {
    margin-bottom: 0;
}

/* Case Studies */
.case-studies {
    margin: 2rem 0;
}

.case {
    background: white;
    border: 2px solid var(--border-color);
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 1.5rem;
    transition: all 0.3s;
}

.case:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

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

.case-tag {
    background: var(--primary-color);
    color: white;
    padding: 0.375rem 1rem;
    border-radius: 2rem;
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.case-header h4 {
    margin: 0;
    flex: 1;
}

.case-result {
    background: var(--primary-light);
    padding: 1rem;
    border-radius: 0.5rem;
    margin-top: 1rem;
}

.case-result strong {
    color: var(--primary-color);
}

/* Security List */
.security-list {
    list-style: none;
    padding: 0;
    margin: 2rem 0;
}

.security-list li {
    padding: 1rem 1.5rem;
    background: var(--bg-light);
    border-left: 4px solid var(--secondary-color);
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    line-height: 1.7;
}

.security-list li strong {
    color: var(--text-primary);
}

.warning-box {
    background: #FFF5E6;
    border: 2px solid #FF8C00;
    border-radius: 1rem;
    padding: 1.5rem;
    margin: 2rem 0;
}

.warning-box p {
    margin: 0;
    color: #92400E;
}

/* Mistakes Section */
.mistakes-section {
    margin: 2rem 0;
}

.mistake-item {
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 1rem;
    margin-bottom: 1.5rem;
}

.mistake-item h4 {
    color: #DC2626;
    margin-top: 0;
    margin-bottom: 1rem;
}

.mistake-item p {
    margin-bottom: 0.75rem;
}

.mistake-item p:last-child {
    margin-bottom: 0;
}

.mistake-item strong {
    display: block;
    margin-top: 0.75rem;
}

/* Cost Calculation */
.cost-calculation {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.calc-item {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 1rem;
    border: 2px solid var(--border-color);
}

.calc-item h4 {
    color: var(--primary-color);
    margin-top: 0;
    margin-bottom: 1rem;
}

.calc-item p {
    margin-bottom: 1rem;
    font-size: 0.9375rem;
}

.calc-item ul {
    margin: 1rem 0;
    padding-left: 1.5rem;
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.calc-item ul li {
    margin-bottom: 0.5rem;
}

.calc-result {
    color: white;
    padding: 1.25rem;
    border-radius: 0.75rem;
    text-align: center;
    margin-top: 1rem !important;
    font-size: 1rem !important;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
    font-weight: 700;
}

/* Future Trends */
.future-trends {
    margin: 2rem 0;
    padding-left: 1.5rem;
}

.future-trends li {
    margin-bottom: 1.5rem;
    padding-left: 0.5rem;
    line-height: 1.8;
}

.future-trends li strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 0.25rem;
}

/* Conclusion */
.conclusion {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2.5rem;
    border-radius: 1rem;
    margin: 3rem 0 2rem;
}

.conclusion h3 {
    color: white;
    margin-top: 0;
    border: none;
    padding: 0;
}

.conclusion p {
    color: rgba(255, 255, 255, 0.95);
    margin-bottom: 1rem;
}

.conclusion p:last-child {
    margin-bottom: 0;
}

/* References */
.references {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: 1rem;
    margin-top: 3rem;
}

.references h4 {
    margin-top: 0;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.references ol {
    padding-left: 1.5rem;
    margin-bottom: 1.5rem;
}

.references ol li {
    margin-bottom: 1rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.references a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.references a:hover {
    text-decoration: underline;
}

.disclaimer {
    color: var(--text-secondary);
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    margin-top: 1rem;
}

.disclaimer small {
    font-size: 0.8125rem;
}

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

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

.feature-card,
.model-card,
.use-case-card,
.pricing-card,
.faq-item {
    animation: fadeInUp 0.6s ease-out;
}