:root {
    --black: #000000;
    --white: #ffffff;
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;
    
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font);
    background: var(--white);
    color: var(--gray-900);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.5rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--black);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: 3rem;
    align-items: center;
}

.nav-links a {
    color: var(--gray-600);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: var(--transition);
}

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

.nav-cta {
    background: var(--black);
    color: var(--white) !important;
    padding: 0.625rem 1.5rem;
    border-radius: 2rem;
}

.nav-cta:hover {
    background: var(--gray-800);
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8rem 3rem 6rem;
    background: var(--white);
}

.hero-content {
    max-width: 900px;
    text-align: center;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 300;
    letter-spacing: -0.04em;
    line-height: 1.1;
    margin-bottom: 2rem;
    color: var(--black);
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    color: var(--gray-600);
    margin-bottom: 3rem;
    font-weight: 400;
    line-height: 1.5;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.btn-primary {
    display: inline-block;
    background: var(--black);
    color: var(--white);
    padding: 1rem 2.5rem;
    border-radius: 2rem;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: var(--gray-800);
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

/* Services */
.services {
    padding: 8rem 3rem;
    background: var(--gray-50);
}

.services-container {
    max-width: 1400px;
    margin: 0 auto;
}

.section-label {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gray-500);
    margin-bottom: 4rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
}

.service-card {
    background: var(--white);
    padding: 3rem;
    border-radius: 1.5rem;
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.08);
    border-color: var(--gray-300);
}

.service-number {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-400);
    margin-bottom: 1.5rem;
    letter-spacing: 0.05em;
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--black);
    letter-spacing: -0.02em;
}

.service-card p {
    color: var(--gray-600);
    line-height: 1.7;
    font-size: 1rem;
}

/* Features */
.features {
    padding: 6rem 3rem;
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    border-bottom: 1px solid var(--gray-200);
}

.features-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4rem;
}

.feature-item {
    flex: 1;
    text-align: center;
}

.feature-item h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--black);
    letter-spacing: -0.02em;
}

.feature-item p {
    color: var(--gray-600);
    font-size: 0.9375rem;
    line-height: 1.6;
}

.feature-divider {
    width: 1px;
    height: 60px;
    background: var(--gray-200);
}

/* Approach */
.approach {
    padding: 8rem 3rem;
    background: var(--white);
}

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

.approach h2 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 300;
    letter-spacing: -0.03em;
    margin-bottom: 5rem;
    color: var(--black);
}

.approach-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 4rem;
}

.approach-step {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
}

.approach-step:nth-child(1) { animation-delay: 0.1s; }
.approach-step:nth-child(2) { animation-delay: 0.2s; }
.approach-step:nth-child(3) { animation-delay: 0.3s; }
.approach-step:nth-child(4) { animation-delay: 0.4s; }

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

.step-num {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-400);
}

.approach-step h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--black);
    letter-spacing: -0.01em;
}

.approach-step p {
    color: var(--gray-600);
    line-height: 1.7;
}

/* Stats */
.stats {
    padding: 6rem 3rem;
    background: var(--gray-50);
}

.stats-container {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 4rem;
    text-align: center;
}

.stat-number {
    font-size: 4rem;
    font-weight: 300;
    color: var(--black);
    letter-spacing: -0.03em;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9375rem;
    color: var(--gray-600);
    font-weight: 500;
}

/* CTA Section */
.cta-section {
    padding: 10rem 3rem;
    background: var(--black);
    color: var(--white);
    text-align: center;
}

.cta-container {
    max-width: 800px;
    margin: 0 auto;
}

.cta-container h2 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 300;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
}

.cta-container > p {
    font-size: 1.25rem;
    color: var(--gray-400);
    margin-bottom: 3rem;
}

.cta-buttons {
    margin-bottom: 3rem;
}

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

.cta-section .btn-primary:hover {
    background: var(--gray-100);
}

.contact-info {
    padding-top: 3rem;
    border-top: 1px solid var(--gray-800);
}

.contact-info p {
    color: var(--gray-500);
    font-size: 0.9375rem;
}

/* Footer */
.footer {
    padding: 4rem 3rem 2rem;
    background: var(--white);
    border-top: 1px solid var(--gray-200);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-brand {
    margin-bottom: 3rem;
}

.footer-brand p {
    color: var(--gray-500);
    font-size: 0.9375rem;
    margin-top: 0.5rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-links a {
    color: var(--gray-600);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--black);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--gray-200);
}

.footer-bottom p {
    color: var(--gray-500);
    font-size: 0.875rem;
}

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

/* Responsive */
@media (max-width: 968px) {
    .nav-container {
        padding: 1.25rem 2rem;
    }
    
    .nav-links {
        gap: 1.5rem;
    }
    
    .hero {
        padding: 7rem 2rem 4rem;
    }
    
    .services,
    .approach {
        padding: 5rem 2rem;
    }
    
    .features {
        padding: 4rem 2rem;
    }
    
    .features-container {
        flex-direction: column;
        gap: 3rem;
    }
    
    .feature-divider {
        width: 60px;
        height: 1px;
    }
    
    .stats {
        padding: 4rem 2rem;
    }
    
    .cta-section {
        padding: 6rem 2rem;
    }
    
    .footer {
        padding: 3rem 2rem 1.5rem;
    }
}

@media (max-width: 640px) {
    .nav-links {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .services-grid,
    .approach-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .stats-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
}