:root {
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-display: 'Space Grotesk', 'Inter', sans-serif;
    --color-black: #111827;
    --color-gray-900: #111827;
    --color-gray-600: #4b5563;
    --color-gray-500: #6b7280;
    --color-gray-400: #9ca3af;
    --color-gray-200: #e5e7eb;
    --color-gray-100: #f3f4f6;
    --color-gray-50: #f9fafb;
    --color-white: #ffffff;
    --color-orange-600: #ea580c;
    --color-orange-100: #ffedd5;
    --color-blue-600: #2563eb;
    --color-blue-100: #dbeafe;
    --color-emerald-500: #10b981;
    --max-w-7xl: 80rem;
    --max-w-5xl: 64rem;
    --max-w-4xl: 56rem;
    --max-w-3xl: 48rem;
    --max-w-2xl: 42rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-sans);
    background: var(--color-white);
    color: var(--color-gray-900);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

img, svg {
    display: block;
    max-width: 100%;
}

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

.font-display {
    font-family: var(--font-display);
}

.container {
    width: 100%;
    max-width: var(--max-w-7xl);
    margin-inline: auto;
    padding-inline: clamp(1.25rem, 4vw, 2rem);
}

.container-narrow {
    max-width: var(--max-w-5xl);
}

.container-contact {
    max-width: var(--max-w-4xl);
}

.container-stage {
    max-width: var(--max-w-5xl);
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    z-index: 100;
    padding: 0.75rem 1rem;
    background: var(--color-black);
    color: var(--color-white);
    font-weight: 600;
}

.skip-link:focus {
    left: 1rem;
    top: 1rem;
}

/* Navbar */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-gray-100);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4.5rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-mark {
    width: 2.25rem;
    height: 2.25rem;
    background: #000;
    border-radius: 9999px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-weight: 600;
    font-size: 1.25rem;
    letter-spacing: -0.05em;
}

.brand-name {
    font-weight: 600;
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    letter-spacing: -0.05em;
}

.nav-desktop {
    display: none;
    align-items: center;
    gap: 2rem;
    font-size: 0.875rem;
}

.nav-link {
    color: var(--color-gray-600);
    font-weight: 500;
    transition: color 0.15s ease;
}

.nav-link:hover,
.nav-link:focus-visible {
    color: var(--color-gray-900);
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    padding: 0.625rem 1.25rem;
    background: #000;
    color: var(--color-white);
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 9999px;
    transition: background 0.15s ease;
}

.nav-cta:hover,
.nav-cta:focus-visible {
    background: var(--color-gray-900);
}

.menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.75rem;
    height: 2.75rem;
    border: 1px solid var(--color-gray-200);
    border-radius: 0.75rem;
    background: var(--color-white);
    color: var(--color-gray-900);
    cursor: pointer;
}

.menu-toggle svg {
    width: 1.25rem;
    height: 1.25rem;
}

.nav-mobile {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0 0 1rem;
    border-top: 1px solid var(--color-gray-100);
}

.nav-mobile.is-open {
    display: flex;
}

.nav-mobile .nav-link,
.nav-mobile .nav-cta {
    padding: 0.75rem 0;
}

.nav-mobile .nav-cta {
    align-self: flex-start;
    margin-top: 0.5rem;
}

@media (min-width: 768px) {
    .nav-desktop {
        display: flex;
    }

    .menu-toggle {
        display: none;
    }

    .nav-mobile {
        display: none !important;
    }
}

/* Navbar — hero overlay variant */
.site-header--hero {
    position: absolute;
    inset-inline: 0;
    top: 0;
    background: transparent;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.site-header--hero .brand-name,
.site-header--hero .nav-link {
    color: rgba(255, 255, 255, 0.72);
}

.site-header--hero .brand-mark {
    background: var(--color-white);
    color: #000;
}

.site-header--hero .brand-name {
    color: var(--color-white);
}

.site-header--hero .nav-link:hover,
.site-header--hero .nav-link:focus-visible {
    color: var(--color-white);
}

.site-header--hero .nav-cta {
    background: var(--color-white);
    color: #000;
}

.site-header--hero .nav-cta:hover,
.site-header--hero .nav-cta:focus-visible {
    background: #e5e7eb;
}

.site-header--hero .menu-toggle {
    border-color: rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.05);
    color: var(--color-white);
}

.site-header--hero .nav-mobile {
    border-top-color: rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.92);
    backdrop-filter: blur(12px);
}

.site-header--hero .nav-mobile .nav-link {
    color: rgba(255, 255, 255, 0.8);
}

.site-header--hero .nav-mobile .nav-link:hover {
    color: var(--color-white);
}

/* Cinematic hero */
.hero-cinematic {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    min-height: 100svh;
    overflow: hidden;
    background: #000;
    text-align: center;
}

.hero-cinematic__bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(at center, #1a1a2e 0%, #000 70%);
}

.subtle-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(to right, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 48px 48px;
    opacity: 0.6;
    mask-image: radial-gradient(circle at center, black 30%, transparent 85%);
}

.hero-cinematic__orbits {
    position: absolute;
    inset: 0;
    opacity: 0.3;
    pointer-events: none;
}

.hero-cinematic__orbit {
    position: absolute;
    border-radius: 9999px;
    border: 1px solid transparent;
}

.hero-cinematic__orbit--cyan {
    top: 25%;
    left: 25%;
    width: min(24rem, 60vw);
    height: min(24rem, 60vw);
    border-color: rgba(34, 211, 238, 0.2);
    animation: spin-slow 60s linear infinite;
}

.hero-cinematic__orbit--purple {
    top: 33%;
    right: 25%;
    width: min(16rem, 45vw);
    height: min(16rem, 45vw);
    border-color: rgba(192, 132, 252, 0.2);
    animation: spin-slow-reverse 90s linear infinite;
}

@keyframes spin-slow {
    to { transform: rotate(360deg); }
}

@keyframes spin-slow-reverse {
    to { transform: rotate(-360deg); }
}

.hero-cinematic__content {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: var(--max-w-5xl);
    margin-inline: auto;
    padding: 7rem clamp(1.25rem, 4vw, 2rem) 5rem;
}

.hero-cinematic__eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1.25rem;
    margin-bottom: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 9999px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(12px);
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.9);
}

.hero-cinematic__status {
    color: #34d399;
    font-size: 0.75rem;
    line-height: 1;
}

.hero-cinematic__title {
    margin: 0 0 1.5rem;
    font-family: var(--font-display);
    font-size: clamp(3rem, 11vw, 5rem);
    line-height: 1;
    letter-spacing: -0.05em;
    font-weight: 600;
    color: var(--color-white);
}

.hero-cinematic__lead {
    max-width: 42rem;
    margin: 0 auto;
    font-size: clamp(1.125rem, 3vw, 1.5rem);
    line-height: 1.45;
    letter-spacing: -0.025em;
    color: #d1d5db;
}

.hero-cinematic__actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: 3rem;
}

@media (min-width: 640px) {
    .hero-cinematic__actions {
        flex-direction: row;
    }
}

.btn-hero-primary {
    min-height: 3.5rem;
    padding: 0 2.5rem;
    background: var(--color-white);
    color: #000;
    font-size: 1.125rem;
    border-radius: 1rem;
}

.btn-hero-primary:hover,
.btn-hero-primary:focus-visible {
    background: #e5e7eb;
}

.btn-hero-secondary {
    min-height: 3.5rem;
    padding: 0 2.5rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    background: transparent;
    color: var(--color-white);
    font-size: 1.125rem;
    border-radius: 1rem;
}

.btn-hero-secondary:hover,
.btn-hero-secondary:focus-visible {
    background: rgba(255, 255, 255, 0.1);
}

.hero-cinematic__tagline {
    margin: 4rem 0 0;
    font-size: 0.875rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-gray-400);
}

.hero-cinematic__fade {
    position: absolute;
    inset-inline: 0;
    bottom: 0;
    height: 8rem;
    background: linear-gradient(to top, #000, transparent);
    pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
    .hero-cinematic__orbit--cyan,
    .hero-cinematic__orbit--purple {
        animation: none;
    }
}

/* Legacy hero (subpages) */
.hero {
    padding: clamp(4rem, 10vw, 6rem) 0 clamp(3rem, 8vw, 5rem);
}

.hero-inner {
    max-width: var(--max-w-3xl);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 1rem;
    border-radius: 9999px;
    background: var(--color-gray-100);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.status-dot {
    width: 0.5rem;
    height: 0.5rem;
    border-radius: 9999px;
    background: var(--color-emerald-500);
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero-title {
    margin: 0;
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    line-height: 1.05;
    letter-spacing: -0.05em;
    font-weight: 600;
}

.hero-lead {
    margin: 1.5rem 0 0;
    font-size: clamp(1.125rem, 3vw, 1.5rem);
    color: var(--color-gray-600);
    letter-spacing: -0.025em;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2.5rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 3.5rem;
    padding: 0 2rem;
    border-radius: 1rem;
    font-size: 1rem;
    font-weight: 600;
    transition: background 0.15s ease, transform 0.1s ease, border-color 0.15s ease;
}

.btn:active {
    transform: scale(0.985);
}

.btn-primary {
    background: #000;
    color: var(--color-white);
}

.btn-primary:hover,
.btn-primary:focus-visible {
    background: var(--color-gray-900);
}

.btn-secondary {
    border: 1px solid var(--color-gray-200);
    background: var(--color-white);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
    background: var(--color-gray-50);
}

.hero-note {
    margin-top: 2rem;
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

/* Sections */
.section {
    padding-block: clamp(3rem, 8vw, 5rem);
}

.section-label {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-gray-500);
    margin-bottom: 0.75rem;
}

.section-header {
    margin: 0;
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    line-height: 1.15;
    letter-spacing: -0.025em;
    font-weight: 600;
}

.section-intro {
    margin-bottom: 3rem;
}

.grid-2 {
    display: grid;
    gap: 1.5rem;
}

.grid-3 {
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .grid-2 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .grid-3 {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

/* Cards */
.mission-card,
.info-card {
    border: 1px solid var(--color-gray-200);
    border-radius: 1.5rem;
    background: var(--color-white);
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.mission-card {
    padding: clamp(1.5rem, 4vw, 2.25rem);
}

.info-card {
    padding: 1.75rem;
}

@media (hover: hover) {
    .mission-card:hover {
        transform: translateY(-4px);
        box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    }
}

.mission-head {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.mission-icon {
    width: 3rem;
    height: 3rem;
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.mission-icon--hea {
    background: var(--color-orange-100);
    color: var(--color-orange-600);
}

.mission-icon--orbital {
    background: var(--color-blue-100);
    color: var(--color-blue-600);
}

.mission-title {
    font-size: clamp(1.25rem, 3vw, 1.5rem);
    font-weight: 600;
    letter-spacing: -0.025em;
}

.mission-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    margin-top: 1.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-gray-900);
}

.mission-link:hover {
    text-decoration: underline;
}

.body-text {
    color: var(--color-gray-600);
    font-size: 0.9375rem;
    line-height: 1.65;
}

.card-divider {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-gray-200);
    font-size: 0.875rem;
}

.card-divider-title {
    font-weight: 500;
    color: var(--color-gray-900);
    margin-bottom: 0.5rem;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    padding: 0.25rem 0.875rem;
    background: var(--color-gray-100);
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* Stage section */
.stage-section {
    background: var(--color-gray-50);
    border-block: 1px solid var(--color-gray-100);
}

.stage-inner {
    max-width: var(--max-w-2xl);
}

.stage-title {
    margin: 0 0 1.5rem;
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4vw, 1.875rem);
    letter-spacing: -0.025em;
    font-weight: 600;
    line-height: 1.2;
}

.stage-list {
    margin: 1.5rem 0 0;
    padding-left: 1.25rem;
    color: var(--color-gray-600);
    font-size: 0.9375rem;
    line-height: 1.65;
}

.stage-list li + li {
    margin-top: 0.5rem;
}

.stage-callout {
    margin-top: 1.5rem;
    padding: 1rem 1.25rem;
    border-left: 3px solid #000;
    background: var(--color-white);
    border-radius: 0 0.75rem 0.75rem 0;
    font-size: 0.9375rem;
    color: var(--color-gray-600);
}

.stage-callout strong {
    color: var(--color-gray-900);
}

/* Intelligence section */
.section-head-row {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

@media (min-width: 768px) {
    .section-head-row {
        flex-direction: row;
        align-items: flex-end;
        justify-content: space-between;
    }
}

.inline-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    white-space: nowrap;
}

.inline-link svg {
    width: 0.875rem;
    height: 0.875rem;
    transition: transform 0.15s ease;
}

.inline-link:hover svg {
    transform: translateX(0.25rem);
}

.card-title {
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.card-text {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    line-height: 1.6;
}

/* Contact */
.contact-section {
    border-top: 1px solid var(--color-gray-100);
    text-align: center;
}

.contact-title {
    margin: 0 0 1rem;
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 2.5rem);
    letter-spacing: -0.025em;
    font-weight: 600;
}

.contact-lead {
    margin: 0 auto;
    max-width: 28rem;
    font-size: clamp(1.125rem, 3vw, 1.25rem);
    color: var(--color-gray-600);
}

.contact-actions {
    margin-top: 2.5rem;
}

.site-footer {
    margin-top: 4rem;
    font-size: 0.75rem;
    color: var(--color-gray-400);
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

/* Subpages */
.page-hero {
    padding: clamp(3rem, 8vw, 5rem) 0 2rem;
}

.page-hero .hero-title {
    font-size: clamp(2rem, 6vw, 3rem);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-gray-600);
}

.back-link:hover {
    color: var(--color-gray-900);
}

.back-link svg {
    width: 0.875rem;
    height: 0.875rem;
}

.section-tight {
    padding-top: 0;
}