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

:root {
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --transition: 0.2s ease;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
}

[data-theme="dark"] {
    --bg-primary: #0a0a0b;
    --bg-secondary: #111113;
    --bg-tertiary: #18181b;
    --bg-card: #151517;
    --bg-card-hover: #1c1c1f;
    --border-color: #27272a;
    --border-color-subtle: #1f1f22;
    --text-primary: #fafafa;
    --text-secondary: #a1a1aa;
    --text-tertiary: #71717a;
    --accent-primary: #3b82f6;
    --accent-secondary: #60a5fa;
    --accent-muted: rgba(59, 130, 246, 0.15);
    --status-construction: #f59e0b;
    --status-construction-bg: rgba(245, 158, 11, 0.12);
    --status-partner: #10b981;
    --status-partner-bg: rgba(16, 185, 129, 0.12);
}

[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --bg-card: #ffffff;
    --bg-card-hover: #f9fafb;
    --border-color: #e5e7eb;
    --border-color-subtle: #f3f4f6;
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-tertiary: #9ca3af;
    --accent-primary: #2563eb;
    --accent-secondary: #3b82f6;
    --accent-muted: rgba(37, 99, 235, 0.08);
    --status-construction: #d97706;
    --status-construction-bg: rgba(217, 119, 6, 0.1);
    --status-partner: #059669;
    --status-partner-bg: rgba(5, 150, 105, 0.1);
}

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 24px;
}

.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color-subtle);
    backdrop-filter: blur(12px);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 18px;
    transition: opacity var(--transition);
}

.brand:hover {
    opacity: 0.85;
}

.brand-icon {
    color: var(--accent-primary);
}

.nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color var(--transition);
}

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

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--text-secondary);
    transition: all var(--transition);
}

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

[data-theme="dark"] .icon-sun { display: block; }
[data-theme="dark"] .icon-moon { display: none; }
[data-theme="light"] .icon-sun { display: none; }
[data-theme="light"] .icon-moon { display: block; }

.hero {
    padding: 120px 0 80px;
    border-bottom: 1px solid var(--border-color-subtle);
}

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

.hero-title {
    font-size: clamp(48px, 8vw, 72px);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 16px;
}

.hero-tagline {
    font-size: clamp(18px, 3vw, 22px);
    color: var(--text-secondary);
    margin-bottom: 40px;
    font-weight: 400;
}

.hero-meta {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
}

.badge svg {
    color: var(--accent-primary);
}

.section {
    padding: 80px 0;
    border-bottom: 1px solid var(--border-color-subtle);
}

.section:last-of-type {
    border-bottom: none;
}

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

.section-title {
    font-size: 28px;
    font-weight: 600;
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.status-badge {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
}

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

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

.section-tagline {
    color: var(--text-secondary);
    font-size: 16px;
    margin-top: 8px;
}

.section-description {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    margin-bottom: 32px;
}

.section-description p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.7;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.service-card {
    display: flex;
    flex-direction: column;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    text-decoration: none;
    color: inherit;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--text-tertiary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.service-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.service-card-header svg {
    color: var(--accent-primary);
    flex-shrink: 0;
}

.service-name {
    font-weight: 600;
    font-size: 15px;
    color: var(--text-primary);
}

.service-desc {
    font-size: 13px;
    color: var(--text-tertiary);
    flex-grow: 1;
}

.service-arrow {
    position: absolute;
    top: 20px;
    right: 20px;
    color: var(--text-tertiary);
    opacity: 0;
    transform: translate(-4px, 4px);
    transition: all var(--transition);
}

.service-card:hover .service-arrow {
    opacity: 1;
    transform: translate(0, 0);
}

.footer {
    padding: 60px 0 40px;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

.founders {
    margin-bottom: 48px;
}

.founders-title {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-tertiary);
    margin-bottom: 20px;
}

.founders-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
}

.founder-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
}

.founder-avatar {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-muted);
    border-radius: var(--radius-sm);
    color: var(--accent-primary);
}

.founder-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.founder-name {
    font-weight: 600;
    font-size: 15px;
}

.founder-role {
    font-size: 13px;
    color: var(--text-tertiary);
}

.founder-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.founder-links a {
    font-size: 13px;
    color: var(--accent-secondary);
    text-decoration: none;
    transition: color var(--transition);
}

.founder-links a:hover {
    color: var(--accent-primary);
    text-decoration: underline;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color-subtle);
}

.footer-legal {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 13px;
    color: var(--text-tertiary);
}

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

.footer-icons {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-tertiary);
}

.footer-icons svg {
    color: var(--accent-primary);
}

.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (max-width: 768px) {
    .header-inner {
        height: 56px;
    }
    
    .nav {
        gap: 16px;
    }
    
    .nav a {
        display: none;
    }
    
    .hero {
        padding: 80px 0 60px;
    }
    
    .hero-meta {
        flex-direction: column;
        align-items: center;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 22px;
        flex-direction: column;
        align-items: flex-start;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .founders-grid {
        grid-template-columns: 1fr;
    }
}