:root {
  --bg: #f6f8fa;
  --bg-alt: #edf1f5;
  --surface: #ffffff;
  --surface-2: #f1f4f7;
  --text: #0b1320;
  --text-2: #4a5566;
  --text-3: #6b7686;
  --line: #dde3ea;
  --line-strong: #c6cfd9;
  --accent: #0a8f86;
  --accent-2: #0c6fb8;
  --accent-soft: rgba(10, 143, 134, .10);
  --glow: rgba(10, 143, 134, .18);
  --grid: rgba(11, 19, 32, .06);
  --shadow: 0 1px 2px rgba(11, 19, 32, .04), 0 8px 24px rgba(11, 19, 32, .06);
  --radius: 16px;
  --maxw: 1160px;
  --font-display: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --font-body: "Inter", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #070b10;
    --bg-alt: #0b1118;
    --surface: #0f161f;
    --surface-2: #131c27;
    --text: #e8eef5;
    --text-2: #a3afbf;
    --text-3: #7d8a9b;
    --line: #1c2733;
    --line-strong: #2a3847;
    --accent: #22d3c5;
    --accent-2: #4aa8ff;
    --accent-soft: rgba(34, 211, 197, .10);
    --glow: rgba(34, 211, 197, .22);
    --grid: rgba(232, 238, 245, .05);
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 12px 32px rgba(0, 0, 0, .35);
  }
}
:root[data-theme="dark"] {
  --bg: #070b10;
  --bg-alt: #0b1118;
  --surface: #0f161f;
  --surface-2: #131c27;
  --text: #e8eef5;
  --text-2: #a3afbf;
  --text-3: #7d8a9b;
  --line: #1c2733;
  --line-strong: #2a3847;
  --accent: #22d3c5;
  --accent-2: #4aa8ff;
  --accent-soft: rgba(34, 211, 197, .10);
  --glow: rgba(34, 211, 197, .22);
  --grid: rgba(232, 238, 245, .05);
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 12px 32px rgba(0, 0, 0, .35);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 400 16px/1.6 var(--font-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background-color .3s, color .3s;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--accent); color: var(--bg); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 16px; }
@media (min-width: 720px) { .wrap { padding: 0 32px; } }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font: 500 12px/1 var(--font-mono);
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent);
}
.eyebrow::before { content: ""; width: 18px; height: 1px; background: currentColor; }
h1, h2, h3 { font-family: var(--font-display); font-weight: 600; letter-spacing: -.02em; margin: 0; }
h2 { font-size: clamp(30px, 4.4vw, 46px); line-height: 1.08; margin-top: 16px; text-wrap: balance; }
h3 { font-size: 20px; line-height: 1.25; }
.lead { color: var(--text-2); font-size: clamp(16px, 1.6vw, 18px); max-width: 60ch; margin: 18px 0 0; }
section { padding: clamp(72px, 10vw, 128px) 0; position: relative; }
.section-head { max-width: 760px; margin-bottom: clamp(40px, 6vw, 64px); }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color .3s;
}
.nav.scrolled { border-bottom-color: var(--line); }
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; gap: 16px; }
.logo { display: flex; align-items: center; gap: 10px; font: 700 17px/1 var(--font-display); letter-spacing: .06em; }
.logo-mark { width: 30px; height: 30px; }
.nav-links { display: none; gap: 28px; font-size: 14px; color: var(--text-2); }
.nav-links a { transition: color .2s; }
.nav-links a:hover { color: var(--text); }
@media (min-width: 900px) { .nav-links { display: flex; } }
.nav-right { display: flex; align-items: center; gap: 10px; }

.theme-switch {
  display: inline-flex; padding: 3px; gap: 2px;
  border: 1px solid var(--line); border-radius: 999px; background: var(--surface);
}
.theme-switch button {
  all: unset; cursor: pointer; width: 30px; height: 26px; border-radius: 999px;
  display: grid; place-items: center; color: var(--text-3); transition: background .2s, color .2s;
}
.theme-switch button:hover { color: var(--text); }
.theme-switch button[aria-pressed="true"] { background: var(--surface-2); color: var(--accent); box-shadow: inset 0 0 0 1px var(--line); }
.theme-switch svg { width: 15px; height: 15px; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  height: 44px; padding: 0 20px; border-radius: 999px;
  font: 500 15px/1 var(--font-body); cursor: pointer;
  transition: transform .2s, background .2s, border-color .2s, box-shadow .2s;
}
.btn-primary { background: var(--text); color: var(--bg); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 8px 24px var(--glow); }
.btn-ghost { border: 1px solid var(--line-strong); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn svg { width: 16px; height: 16px; }
.nav .btn { height: 36px; padding: 0 16px; font-size: 14px; display: none; }
@media (min-width: 560px) { .nav .btn { display: inline-flex; } }

/* ---------- Hero ---------- */
.hero { padding: clamp(56px, 9vw, 112px) 0 clamp(64px, 9vw, 104px); overflow: hidden; }
.hero-bg {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 70% at 70% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 70% 40%, #000 30%, transparent 75%);
}
.hero-glow {
  position: absolute; width: 720px; height: 720px; right: -200px; top: -160px;
  background: radial-gradient(circle, var(--glow), transparent 62%);
  filter: blur(20px); pointer-events: none;
}
.hero .wrap { position: relative; display: grid; gap: 56px; align-items: center; }
@media (min-width: 980px) { .hero .wrap { grid-template-columns: 1.1fr .9fr; } }
.hero h1 {
  font-size: clamp(42px, 7vw, 80px); line-height: 1.0; letter-spacing: -.035em;
  margin-top: 22px; text-wrap: balance;
}
.hero h1 .grad {
  background: linear-gradient(100deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .lead { font-size: clamp(17px, 1.8vw, 20px); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero-meta {
  display: flex; flex-wrap: wrap; gap: 10px 28px; margin-top: 44px;
  font: 400 13px/1.4 var(--font-mono); color: var(--text-3);
}
.hero-meta span { display: inline-flex; align-items: center; gap: 8px; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px var(--accent-soft); }

.radar {
  position: relative; aspect-ratio: 1; width: 100%; max-width: 480px; margin: 0 auto;
  border-radius: 50%;
  background: radial-gradient(circle, var(--surface) 0%, var(--bg-alt) 70%);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.radar svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.radar .rings circle { fill: none; stroke: var(--line-strong); stroke-width: 1; }
.radar .axes line { stroke: var(--line); stroke-width: 1; }
.radar .sweep {
  position: absolute; inset: 0; border-radius: 50%;
  background: conic-gradient(from 0deg, transparent 0deg, transparent 290deg, var(--glow) 350deg, color-mix(in srgb, var(--accent) 55%, transparent) 360deg);
  animation: sweep 6s linear infinite;
}
@keyframes sweep { to { transform: rotate(360deg); } }
.radar .blip { fill: var(--accent); }
.radar .blip-ring { fill: none; stroke: var(--accent); transform-box: fill-box; transform-origin: center; animation: ping 3s ease-out infinite; }
.radar .blip-ring.d2 { animation-delay: 1s; }
.radar .blip-ring.d3 { animation-delay: 2s; }
@keyframes ping { 0% { transform: scale(.4); opacity: .9; } 100% { transform: scale(3); opacity: 0; } }
.radar .vessel { fill: var(--text); }
.radar .wake { stroke: var(--accent); stroke-width: 1.5; fill: none; stroke-dasharray: 3 5; opacity: .7; }
.radar .label { font: 500 10px var(--font-mono); fill: var(--text-3); letter-spacing: .08em; }
.radar-readout {
  position: absolute; left: 50%; bottom: 14%; transform: translateX(-50%);
  font: 500 11px/1 var(--font-mono); letter-spacing: .1em; color: var(--text-2);
  background: var(--surface); border: 1px solid var(--line); border-radius: 999px; padding: 8px 12px;
  white-space: nowrap;
}
.radar-readout b { color: var(--accent); font-weight: 500; }
@media (max-width: 480px) { .radar-readout { font-size: 9px; letter-spacing: .06em; padding: 7px 10px; bottom: 12%; } }

/* ---------- Marquee strip ---------- */
.strip { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--bg-alt); overflow: hidden; }
.strip-track {
  display: flex; gap: 48px; width: max-content; padding: 18px 0;
  font: 500 13px/1 var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--text-3);
  animation: marquee 40s linear infinite;
}
.strip-track span { display: inline-flex; align-items: center; gap: 48px; }
.strip-track span::after { content: "◆"; font-size: 8px; color: var(--accent); }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---------- Capabilities ---------- */
.cards { display: grid; gap: 16px; }
@media (min-width: 760px) { .cards { grid-template-columns: repeat(3, 1fr); } }
.card {
  position: relative; padding: 28px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--line);
  transition: transform .3s, border-color .3s, box-shadow .3s;
  overflow: hidden;
}
.card:hover { transform: translateY(-3px); border-color: var(--line-strong); box-shadow: var(--shadow); }
.card::after {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0); transform-origin: left; transition: transform .4s;
}
.card:hover::after { transform: scaleX(1); }
.card-icon {
  width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent); margin-bottom: 22px;
}
.card-icon svg { width: 22px; height: 22px; }
.card .tag { font: 500 11px/1 var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--text-3); }
.card h3 { margin: 10px 0 12px; }
.card p { color: var(--text-2); margin: 0; font-size: 15px; }

/* ---------- Platform ---------- */
.platform, .band { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.platform-grid { display: grid; gap: 48px; align-items: center; }
@media (min-width: 980px) { .platform-grid { grid-template-columns: 1fr 1fr; gap: 64px; } }
.vessel-figure {
  position: relative; border-radius: 20px; padding: 28px;
  background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow);
  overflow: hidden;
}
.vessel-figure::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 24px 24px; pointer-events: none;
}
.vessel-figure svg { position: relative; width: 100%; height: auto; }
.vessel-figure .hull { fill: var(--surface-2); stroke: var(--text); stroke-width: 1.5; }
.vessel-figure .detail { fill: none; stroke: var(--text-3); stroke-width: 1; }
.vessel-figure .sensor { fill: var(--accent); }
.vessel-figure .dim { stroke: var(--text-3); stroke-width: 1; }
.vessel-figure .dim-text { font: 500 11px var(--font-mono); fill: var(--text-3); letter-spacing: .06em; }
.vessel-figure .water { stroke: var(--accent); stroke-width: 1.25; fill: none; opacity: .55; }
.figure-caption {
  position: relative; display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  margin-top: 18px; padding-top: 16px; border-top: 1px dashed var(--line-strong);
  font: 500 12px/1.4 var(--font-mono); color: var(--text-3); letter-spacing: .06em;
}
.figure-caption b { color: var(--text); font-weight: 500; }

.specs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; margin-top: 32px; }
@media (min-width: 560px) { .specs { grid-template-columns: repeat(3, 1fr); } }
.spec { background: var(--surface); padding: 20px; }
.spec .v { font: 600 clamp(24px, 3vw, 30px)/1 var(--font-display); letter-spacing: -.02em; }
.spec .v small { font-size: .5em; color: var(--text-3); margin-left: 3px; font-weight: 500; }
.spec .k { margin-top: 8px; font: 500 11px/1.3 var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--text-3); }

/* ---------- Technology ---------- */
.tech-grid { display: grid; gap: 48px; }
@media (min-width: 980px) { .tech-grid { grid-template-columns: .9fr 1.1fr; gap: 72px; align-items: start; } .tech-grid .section-head { position: sticky; top: 108px; margin-bottom: 0; } }
.stack { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.stack li { display: grid; grid-template-columns: 44px 1fr; gap: 16px; padding: 22px 0; border-bottom: 1px solid var(--line); }
.stack .n { font: 500 13px/1.6 var(--font-mono); color: var(--accent); }
.stack h3 { font-size: 18px; }
.stack p { margin: 6px 0 0; color: var(--text-2); font-size: 15px; }

/* ---------- Programs ---------- */
.programs { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.program-list { display: grid; gap: 16px; }
@media (min-width: 900px) { .program-list { grid-template-columns: 1fr 1fr; } }
.program {
  display: flex; flex-direction: column; padding: clamp(24px, 3vw, 36px); border-radius: 20px;
  background: var(--surface); border: 1px solid var(--line);
}
.program-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; flex-wrap: wrap; }
.badge {
  display: inline-flex; align-items: center; gap: 8px; height: 28px; padding: 0 12px; border-radius: 999px;
  font: 500 11px/1 var(--font-mono); letter-spacing: .1em; text-transform: uppercase;
  background: var(--accent-soft); color: var(--accent);
}
.badge.alt { background: color-mix(in srgb, var(--accent-2) 12%, transparent); color: var(--accent-2); }
.program .when { font: 500 12px/28px var(--font-mono); color: var(--text-3); letter-spacing: .06em; }
.program h3 { font-size: clamp(22px, 2.4vw, 26px); margin: 22px 0 6px; }
.program .sub { color: var(--text-3); font-size: 14px; margin: 0 0 16px; }
.program p { color: var(--text-2); margin: 0 0 16px; font-size: 15px; }
.facts { display: grid; grid-template-columns: auto 1fr; gap: 8px 20px; margin: 8px 0 0; padding: 18px 0 0; border-top: 1px solid var(--line); font-size: 14px; }
.facts dt { font: 500 11px/1.9 var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--text-3); }
.facts dd { margin: 0; color: var(--text); }
.funding-bar {
  margin-top: auto; padding-top: 24px;
}
.funding-bar .bar-card { background: #ffffff; border-radius: 12px; padding: 12px 16px; border: 1px solid var(--line); }
.funding-bar img { width: 100%; height: auto; }
.funding-bar p { font-size: 12px; color: var(--text-3); margin: 10px 0 0; }
.funding-bar a, .program a.inline { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.partners { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 4px; }
.partners span { font: 500 12px/1 var(--font-mono); padding: 7px 10px; border-radius: 8px; border: 1px solid var(--line); color: var(--text-2); }
.partners span.us { border-color: var(--accent); color: var(--accent); }

/* ---------- About / numbers ---------- */
.about-grid { display: grid; gap: 48px; }
@media (min-width: 980px) { .about-grid { grid-template-columns: 1.1fr .9fr; gap: 72px; align-items: center; } }
.numbers { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.num { padding: 24px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); }
.num .v { font: 600 clamp(34px, 4.4vw, 46px)/1 var(--font-display); letter-spacing: -.03em; }
.num .v span { color: var(--accent); }
.num .k { margin-top: 10px; color: var(--text-2); font-size: 14px; }
.values { display: grid; gap: 14px; margin-top: 32px; }
.values div { display: flex; gap: 14px; }
.values svg { flex: none; width: 20px; height: 20px; color: var(--accent); margin-top: 3px; }
.values p { margin: 0; color: var(--text-2); }
.values b { color: var(--text); font-weight: 600; }

/* ---------- Contact ---------- */
.contact-card {
  position: relative; overflow: hidden; border-radius: 28px;
  padding: clamp(36px, 6vw, 72px);
  background: var(--surface); border: 1px solid var(--line); box-shadow: var(--shadow);
  display: grid; gap: 40px;
}
@media (min-width: 900px) { .contact-card { grid-template-columns: 1.2fr .8fr; align-items: end; } }
.contact-card::before {
  content: ""; position: absolute; width: 560px; height: 560px; left: -180px; bottom: -320px;
  background: radial-gradient(circle, var(--glow), transparent 65%); pointer-events: none;
}
.contact-card > * { position: relative; }
.contact-card h2 { font-size: clamp(32px, 5vw, 54px); }
.contact-list { display: grid; gap: 18px; }
.contact-list div { border-top: 1px solid var(--line); padding-top: 14px; }
.contact-list dt { font: 500 11px/1 var(--font-mono); letter-spacing: .12em; text-transform: uppercase; color: var(--text-3); }
.contact-list dd { margin: 8px 0 0; font-size: 16px; }
.contact-list a { color: var(--accent); }
.contact-list a:hover { text-decoration: underline; text-underline-offset: 3px; }

/* ---------- Footer ---------- */
footer { padding: 40px 0 48px; border-top: 1px solid var(--line); color: var(--text-3); font-size: 13px; }
footer .wrap { display: flex; flex-wrap: wrap; gap: 16px 32px; justify-content: space-between; align-items: center; }
footer nav { display: flex; flex-wrap: wrap; gap: 20px; }
footer a:hover { color: var(--text); }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
}.spec.word .v { font-size: clamp(19px, 2.2vw, 22px); line-height: 1.36; }
.radar .links path { stroke: var(--accent); stroke-width: 1.2; fill: none; stroke-dasharray: 4 6; opacity: .6; animation: flow 1.6s linear infinite; }
@keyframes flow { to { stroke-dashoffset: -20; } }
.radar .chip > rect:first-child { fill: var(--surface); stroke: var(--text); stroke-width: 1.5; }
.radar .chip .core { fill: var(--accent); opacity: .9; }
.radar .chip .pins { stroke: var(--text-3); stroke-width: 1.5; stroke-linecap: round; }
.program-list.single { grid-template-columns: 1fr; max-width: 820px; }