:root {
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-light: #3b82f6;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-bg: #ffffff;
    --color-bg-alt: #f9fafb;
    --color-border: #e5e7eb;
    --color-success: #10b981;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --radius: 8px;
    --radius-lg: 12px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    line-height: 1.6;
    background: var(--color-bg);
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

.sticky-header {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--color-border);
    z-index: 100;
}

.header-container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--color-primary);
    text-decoration: none;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav-link {
    color: var(--color-text-light);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--color-text);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius);
    transition: all 0.2s;
    cursor: pointer;
    border: none;
}

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

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

.btn-ghost {
    background: transparent;
    color: var(--color-text-light);
    border: 1px solid var(--color-border);
}

.btn-ghost:hover {
    background: var(--color-bg-alt);
    color: var(--color-text);
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}

.hero {
    padding: 80px 0 100px;
    text-align: center;
    background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    max-width: 700px;
    margin: 0 auto 20px;
    color: var(--color-text);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 560px;
    margin: 0 auto 32px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.trust-note {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

section {
    padding: 80px 0;
}

section:nth-child(even) {
    background: var(--color-bg-alt);
}

h2 {
    font-size: 1.75rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 48px;
    color: var(--color-text);
}

.social-proof {
    background: var(--color-bg);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.testimonial-card {
    background: var(--color-bg-alt);
    padding: 28px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.testimonial-quote {
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: 20px;
    color: var(--color-text);
}

.testimonial-author {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.author-name {
    font-weight: 600;
    font-size: 0.9375rem;
}

.author-role {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.step {
    text-align: center;
}

.step-number {
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: 20px;
}

.step h3 {
    font-size: 1.125rem;
    margin-bottom: 12px;
}

.step p {
    color: var(--color-text-light);
    font-size: 0.9375rem;
    max-width: 280px;
    margin: 0 auto 20px;
}

.screenshot {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    margin-top: 16px;
    height: 200px;
}

.screenshot img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top left;
    display: block;
    border-radius: var(--radius-lg);
}

/* Service Insight Section */
.service-insight {
    padding: 80px 0;
    background: var(--color-bg);
}

.insight-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.insight-text h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 20px;
}

.insight-text p {
    font-size: 1.125rem;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 16px;
}

.insight-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.insight-image img {
    width: 100%;
    height: auto;
    display: block;
}

@media (max-width: 768px) {
    .insight-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .insight-text h2 {
        font-size: 1.75rem;
    }
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.benefit-card {
    background: var(--color-bg);
    padding: 28px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.benefit-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background: var(--color-bg-alt);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.benefit-card h3 {
    font-size: 1rem;
    margin-bottom: 8px;
}

.benefit-card p {
    font-size: 0.9375rem;
    color: var(--color-text-light);
    line-height: 1.6;
}

.outputs {
    background: var(--color-bg);
}

.outputs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    max-width: 900px;
    margin: 0 auto;
}

.output-item {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 20px;
    background: var(--color-bg-alt);
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
}

.output-icon {
    flex-shrink: 0;
    color: var(--color-primary);
}

.output-item h4 {
    font-size: 0.9375rem;
    margin-bottom: 4px;
}

.output-item p {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.pricing {
    text-align: center;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.pricing-card {
    background: var(--color-bg);
    border: 2px solid var(--color-primary);
    border-radius: var(--radius-lg);
    padding: 48px 40px;
    max-width: 400px;
    margin: 0 auto;
    box-shadow: var(--shadow-lg);
}

.pricing-header {
    margin-bottom: 32px;
}

.pricing-amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-text);
}

.pricing-period {
    font-size: 1.125rem;
    color: var(--color-text-light);
}

.pricing-features {
    list-style: none;
    text-align: left;
    margin-bottom: 32px;
}

.pricing-features li {
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.9375rem;
    display: flex;
    align-items: center;
    gap: 12px;
}

.pricing-features li::before {
    content: '';
    width: 20px;
    height: 20px;
    background: var(--color-success);
    border-radius: 50%;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='3'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
    background-size: 12px;
    background-position: center;
    background-repeat: no-repeat;
    flex-shrink: 0;
}

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

.faq {
    background: var(--color-bg);
}

.faq-list {
    max-width: 700px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

.faq-item summary {
    padding: 20px 0;
    font-weight: 600;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-item summary::after {
    content: '+';
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--color-text-light);
    transition: transform 0.2s;
}

.faq-item[open] summary::after {
    content: '-';
}

.faq-item p {
    padding-bottom: 20px;
    color: var(--color-text-light);
    line-height: 1.7;
}

.final-cta {
    background: var(--color-primary);
    color: white;
    text-align: center;
    padding: 80px 0;
}

.final-cta h2 {
    color: white;
    margin-bottom: 16px;
}

.final-cta p {
    opacity: 0.9;
    margin-bottom: 32px;
    font-size: 1.125rem;
}

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

.final-cta .btn-primary:hover {
    background: var(--color-bg-alt);
}

.footer {
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid var(--color-border);
}

.footer p {
    color: var(--color-text-light);
    font-size: 0.875rem;
}

@media (max-width: 768px) {
    .hero {
        padding: 60px 0 80px;
    }
    
    section {
        padding: 60px 0;
    }
    
    h2 {
        font-size: 1.5rem;
        margin-bottom: 36px;
    }
    
    .header-nav {
        gap: 16px;
    }
    
    .btn-lg {
        width: 100%;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-cta .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .benefit-card {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
    
    .pricing-card {
        padding: 32px 24px;
    }
}