:root {
    --bg: #0b1120;
    --bg-elevated: #111827;
    --surface: #1e293b;
    --border: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent: #38bdf8;
    --accent-hover: #0ea5e9;
    --accent-glow: rgba(56, 189, 248, 0.15);
    --radius: 12px;
    --transition: 200ms ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--bg);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

.container {
    width: 100%;
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 18px 0;
    transition: background-color var(--transition), box-shadow var(--transition);
}

.nav--scrolled {
    background-color: rgba(11, 17, 32, 0.85);
    backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
}

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

.nav__brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--text-primary);
}

.nav__logo {
    width: 36px;
    height: 36px;
    object-fit: contain;
}

.nav__links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav__links a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color var(--transition);
}

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

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    transition: transform var(--transition), opacity var(--transition);
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
}

.hero__container {
    position: relative;
    z-index: 1;
}

.hero__title {
    font-size: clamp(2.75rem, 6vw, 4.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero__subtitle {
    font-size: clamp(1.125rem, 2vw, 1.375rem);
    color: var(--text-secondary);
    max-width: 680px;
    margin-bottom: 40px;
    line-height: 1.7;
}

.hero__actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: transform var(--transition), background-color var(--transition), box-shadow var(--transition);
    border: 1px solid transparent;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn--primary {
    background-color: var(--accent);
    color: var(--bg);
    box-shadow: 0 4px 24px rgba(56, 189, 248, 0.25);
}

.btn--primary:hover {
    background-color: var(--accent-hover);
    box-shadow: 0 6px 32px rgba(56, 189, 248, 0.35);
}

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

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

.btn--large {
    padding: 16px 32px;
    font-size: 1rem;
}

/* Sections */
.section {
    padding: 100px 0;
}

.section--mission {
    background-color: var(--bg-elevated);
}

.section__header {
    margin-bottom: 56px;
}

.section__header--centered {
    text-align: center;
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
}

.section__eyebrow {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
    margin-bottom: 12px;
}

.section__title {
    font-size: clamp(1.875rem, 4vw, 2.75rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

/* Mission */
.mission__statement {
    text-align: center;
    max-width: 780px;
    margin: 0 auto 64px;
}

.mission__statement p {
    color: var(--text-secondary);
    font-size: clamp(1.0625rem, 2vw, 1.25rem);
    line-height: 1.8;
}

.mission__pillars {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.pillar {
    text-align: center;
    padding: 32px 24px;
    background-color: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.pillar:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.pillar__icon {
    width: 48px;
    height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--accent-glow);
    border-radius: 50%;
    color: var(--accent);
    margin-bottom: 18px;
}

.pillar__title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.pillar__desc {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

/* Focus */
.focus__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.focus__card {
    background-color: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.focus__card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.focus__icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--accent-glow);
    border-radius: 10px;
    color: var(--accent);
    margin-bottom: 20px;
}

.focus__title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.focus__desc {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

/* Contact */
.section--contact {
    padding-bottom: 120px;
}

.contact__card {
    background: linear-gradient(135deg, var(--surface) 0%, var(--bg-elevated) 100%);
    border: 1px solid var(--border);
    border-radius: calc(var(--radius) * 1.5);
    padding: 64px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.contact__card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
    pointer-events: none;
}

.contact__content {
    position: relative;
    z-index: 1;
}

.contact__text {
    color: var(--text-secondary);
    font-size: 1.0625rem;
    max-width: 480px;
    margin: 0 auto 32px;
    line-height: 1.7;
}

/* Footer */
.footer {
    border-top: 1px solid var(--border);
    padding: 32px 0;
}

.footer__container {
    text-align: center;
}

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

/* Responsive */
@media (max-width: 900px) {
    .mission__pillars {
        grid-template-columns: 1fr;
    }

    .focus__grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav__toggle {
        display: flex;
    }

    .nav__links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background-color: var(--bg-elevated);
        border-bottom: 1px solid var(--border);
        padding: 8px 0;
        transform: translateY(-10px);
        opacity: 0;
        visibility: hidden;
        transition: transform var(--transition), opacity var(--transition), visibility var(--transition);
    }

    .nav__links.is-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav__links a {
        display: block;
        padding: 14px 24px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .nav__links li:last-child a {
        border-bottom: none;
    }

    .hero {
        padding-top: 100px;
    }

    .section {
        padding: 72px 0;
    }

    .contact__card {
        padding: 40px 24px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}