:root {
    --bg-base: #0a0a0a;
    --bg-surface: #111111;
    --bg-surface-hover: #1a1a1a;
    --border-color: #222222;
    --border-hover: #333333;
    
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    
    --accent-primary: #3b82f6;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-24: 6rem;
    --space-32: 8rem;
    
    --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;
    
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.section {
    padding: var(--space-24) 0;
}

.bg-surface {
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

h1, h2, h3, h4 {
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: var(--space-4);
}

.section-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-full);
    font-weight: 500;
    font-size: 1rem;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: 1px solid transparent;
}

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-base);
}

.btn-primary:hover {
    background: #e4e4e7;
    transform: translateY(-1px);
}

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

.btn-secondary:hover {
    background: var(--bg-surface-hover);
    border-color: var(--border-hover);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: 1.125rem;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 72px;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
    display: flex;
    align-items: center;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
}

.lang-toggle {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.lang-toggle:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.lang-toggle .active {
    color: var(--text-primary);
}

.lang-divider {
    color: var(--border-color);
}

.hero {
    position: relative;
    padding-top: calc(72px + var(--space-24));
    padding-bottom: var(--space-24);
    min-height: 90vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-container {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-primary);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: var(--space-6);
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5rem);
    margin-bottom: var(--space-6);
    background: linear-gradient(to bottom right, #ffffff, #a1a1aa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 3vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
}

.hero-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.15) 0%, rgba(10, 10, 10, 0) 70%);
    z-index: 1;
    pointer-events: none;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-6);
}

.stat-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    text-align: center;
    transition: transform var(--transition-normal), border-color var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-2);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-6);
}

.service-card {
    background: var(--bg-base);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    transition: all var(--transition-normal);
}

.service-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-surface-hover);
}

.service-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: rgba(59, 130, 246, 0.1);
    color: var(--accent-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-6);
}

.service-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-3);
}

.service-desc {
    color: var(--text-secondary);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-8);
    position: relative;
}

.process-step {
    position: relative;
}

.step-number {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: var(--space-4);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: rgba(59, 130, 246, 0.1);
}

.step-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-2);
}

.step-desc {
    color: var(--text-secondary);
}

.cta-container {
    text-align: center;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-16) var(--space-6);
    position: relative;
    overflow: hidden;
}

.cta-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-gradient);
}

.cta-title {
    font-size: 2.5rem;
    margin-bottom: var(--space-4);
}

.cta-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-8);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.copy-feedback {
    margin-top: var(--space-4);
    color: var(--accent-primary);
    font-size: 0.95rem;
}

.footer {
    border-top: 1px solid var(--border-color);
    padding: var(--space-12) 0;
    background: var(--bg-surface);
}

.footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-6);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: 700;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: var(--space-6);
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

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

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

@media (max-width: 768px) {
    .hero-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .section {
        padding: var(--space-16) 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
}