:root {
  --ink: #0e1726;
  --ink-2: #334155;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg: #ffffff;
  --bg-alt: #f5f7fa;
  --dark: #0a1220;
  --dark-2: #111c2e;
  --accent: #14b8a6;
  --accent-ink: #0f766e;
  --accent-soft: #ccfbf1;
  --radius: 14px;
  --max: 1160px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 0.5em; }
h1 { font-size: clamp(2.4rem, 6vw, 4.4rem); font-weight: 700; }
h2 { font-size: clamp(1.75rem, 3.6vw, 2.6rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 600; letter-spacing: -0.01em; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.narrow { max-width: 820px; }
.muted { color: var(--muted); }

.eyebrow {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}
.eyebrow-dark { color: var(--accent-ink); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.85em 1.4em;
  border-radius: 999px;
  font: 600 0.95rem/1 var(--font);
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, background .15s ease, border-color .15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #042f2e; }
.btn-primary:hover { background: #2dd4bf; }
.btn-ghost { color: #fff; border-color: rgba(255,255,255,.35); }
.btn-ghost:hover { border-color: #fff; }
.btn-small { padding: 0.6em 1.1em; font-size: 0.88rem; background: var(--accent); color: #042f2e; }

/* ---------- Nav ---------- */
.nav {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  color: #fff;
  transition: background .25s ease, box-shadow .25s ease, color .25s ease;
}
.nav.scrolled {
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  box-shadow: 0 1px 0 var(--line);
  color: var(--ink);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; text-decoration: none; letter-spacing: -0.01em; font-size: 1.05rem; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { text-decoration: none; font-size: 0.95rem; font-weight: 500; opacity: .9; }
.nav-links a:hover { opacity: 1; }
.nav-links .btn-small { opacity: 1; }
.nav-toggle { display: none; background: none; border: 0; padding: 10px; cursor: pointer; color: inherit; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: currentColor; margin: 5px 0; transition: transform .2s ease; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex; align-items: center;
  color: #fff;
  background:
    radial-gradient(1200px 600px at 75% 40%, #12324a 0%, transparent 60%),
    var(--dark);
  overflow: hidden;
}
.hero-globe { position: absolute; inset: 0; }
.hero-globe .cesium-viewer,
.hero-globe .cesium-widget,
.hero-globe canvas { width: 100%; height: 100%; }
.hero-globe .cesium-viewer-bottom { display: none !important; }
.hero-shade {
  position: absolute; inset: 0; pointer-events: none;
  background:
    linear-gradient(90deg, rgba(10,18,32,.92) 0%, rgba(10,18,32,.72) 38%, rgba(10,18,32,.15) 70%, rgba(10,18,32,0) 100%),
    linear-gradient(0deg, rgba(10,18,32,.8) 0%, rgba(10,18,32,0) 30%);
}
.hero-content { position: relative; z-index: 2; padding-top: 110px; padding-bottom: 110px; }
.hero-content h1 { max-width: 11em; }
.hero-sub { max-width: 30em; font-size: 1.15rem; color: #cbd5e1; margin: 1.25rem 0 2rem; }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-caption {
  position: absolute; left: 24px; bottom: 20px; z-index: 2;
  font: 500 0.72rem var(--mono); letter-spacing: .08em; text-transform: uppercase;
  color: #94a3b8; display: flex; align-items: center; gap: 8px;
}
.hero-caption .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 4px rgba(20,184,166,.2); }
.hero-credits {
  position: absolute; right: 16px; bottom: 16px; z-index: 2;
  font-size: 10px; color: #64748b; max-width: 60%; text-align: right;
}
.hero-credits a { color: #94a3b8; }
.hero-credits img { display: inline-block; height: 14px; vertical-align: middle; opacity: .6; }
.hero-credits .cesium-widget-credits { position: static; display: flex !important; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 8px; padding: 0; color: #94a3b8; font-size: 10px; }
.hero-credits .cesium-credit-textContainer { display: inline !important; }
.hero-credits .cesium-credit-expand-link { color: #94a3b8; text-decoration: underline; cursor: pointer; }

/* ---------- Sections ---------- */
.section { padding: 104px 0; }
.section-tight { padding: 56px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--dark); color: #fff; }
.section h2 { max-width: 22ch; margin-bottom: 1.4rem; }
.lead { font-size: 1.1rem; color: var(--ink-2); max-width: 40em; margin-bottom: 2.5rem; }
.lead-light { font-size: 1.1rem; color: #cbd5e1; }

.grid { display: grid; gap: 20px; margin-top: 2.5rem; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.lead + .grid { margin-top: 0; }

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px 24px;
  background: var(--bg);
}
.card p { color: var(--ink-2); font-size: 0.97rem; margin: 0; }

.service {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 32px 30px;
  border: 1px solid var(--line);
}
.service p { color: var(--ink-2); margin: 0; }
.service-icon {
  width: 44px; height: 44px; border-radius: 12px;
  background: var(--accent-soft); color: var(--accent-ink);
  display: grid; place-items: center; margin-bottom: 20px;
}
.service-icon svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }

/* ---------- Demos ---------- */
.demo { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--bg); display: flex; flex-direction: column; }
.demo-visual {
  aspect-ratio: 16 / 10;
  position: relative;
  display: flex; align-items: flex-end; padding: 14px;
  background-color: var(--dark-2);
  background-image:
    linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px);
  background-size: 28px 28px;
}
.demo-visual::before { content: ""; position: absolute; inset: 0; }
.demo-visual-a::before { background: radial-gradient(circle at 30% 60%, rgba(20,184,166,.55), transparent 55%), radial-gradient(circle at 75% 35%, rgba(56,189,248,.35), transparent 50%); }
.demo-visual-b::before { background: radial-gradient(circle at 60% 55%, rgba(251,191,36,.4), transparent 55%), radial-gradient(circle at 25% 30%, rgba(20,184,166,.3), transparent 50%); }
.demo-visual-c::before { background: radial-gradient(circle at 50% 80%, rgba(129,140,248,.45), transparent 55%), radial-gradient(circle at 80% 20%, rgba(244,114,182,.25), transparent 50%); }
.demo-visual span { position: relative; font: 500 0.72rem var(--mono); letter-spacing: .1em; text-transform: uppercase; color: rgba(255,255,255,.75); }
.demo-body { padding: 22px 22px 24px; }
.demo-body p { color: var(--ink-2); font-size: 0.97rem; }
.demo-data { font: 0.8rem var(--mono); color: var(--muted) !important; margin: 0; }
.tag { display: inline-block; font: 500 0.7rem var(--mono); letter-spacing: .06em; text-transform: uppercase; padding: 4px 9px; border-radius: 999px; background: var(--accent-soft); color: var(--accent-ink); margin-bottom: 12px; }
.tag-pending { background: #f1f5f9; color: var(--muted); }

/* ---------- Process ---------- */
.steps { list-style: none; padding: 0; margin: 2.5rem 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: none; }
.steps li { border-top: 2px solid var(--ink); padding-top: 20px; }
.step-num { display: block; font: 500 0.8rem var(--mono); color: var(--accent-ink); margin-bottom: 10px; }
.steps p { color: var(--ink-2); font-size: 0.97rem; margin: 0; }
.engage { margin-top: 56px; background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; }
.engage ul { margin: 0 0 1rem; padding-left: 1.2em; }
.engage li { margin: .35em 0; color: var(--ink-2); }
.engage li strong { color: var(--ink); }
.engage p { margin: 0; }

/* ---------- Stack ---------- */
.chips { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.chips li { font: 500 0.88rem var(--mono); padding: 8px 14px; border: 1px solid var(--line); border-radius: 999px; color: var(--ink-2); }

/* ---------- About ---------- */
.about { display: grid; grid-template-columns: 1fr 1.15fr; gap: 64px; align-items: center; }
.about p { color: var(--ink-2); max-width: 40em; }
.about-figure { margin: 0; }
.about-figure img { width: 100%; height: auto; aspect-ratio: 16 / 10; object-fit: cover; border-radius: var(--radius); box-shadow: 0 24px 48px -24px rgba(15,23,42,.35); }
.about-figure figcaption { margin-top: 12px; font: 0.8rem var(--mono); color: var(--muted); }
.checks { list-style: none; padding: 0; margin: 1.5rem 0 0; }
.checks li { position: relative; padding-left: 30px; margin: .6em 0; color: var(--ink); }
.checks li::before { content: ""; position: absolute; left: 0; top: .45em; width: 16px; height: 9px; border-left: 2px solid var(--accent-ink); border-bottom: 2px solid var(--accent-ink); transform: rotate(-45deg); }

/* ---------- FAQ ---------- */
.faq { margin-top: 2rem; border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { list-style: none; cursor: pointer; padding: 22px 40px 22px 0; font-weight: 600; font-size: 1.05rem; position: relative; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 4px; top: 50%; transform: translateY(-50%); font: 400 1.5rem var(--font); color: var(--muted); transition: transform .2s ease; }
.faq details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
.faq details p { color: var(--ink-2); padding-bottom: 22px; margin: 0; max-width: 42em; }

/* ---------- Contact ---------- */
.contact { display: grid; grid-template-columns: 1fr 1.1fr; gap: 64px; align-items: start; }
.contact h2 { color: #fff; }
.contact-direct { margin-top: 2rem; color: #94a3b8; }
.contact-direct a { color: #fff; font-weight: 600; font-size: 1.1rem; }
.form { display: grid; gap: 16px; background: var(--dark-2); padding: 30px; border-radius: var(--radius); border: 1px solid rgba(255,255,255,.08); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form label { display: grid; gap: 6px; font-size: 0.88rem; font-weight: 500; color: #cbd5e1; }
.form input, .form select, .form textarea {
  font: 400 1rem var(--font); color: #fff;
  background: rgba(255,255,255,.04);
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 10px; padding: 12px 14px; width: 100%;
}
.form select option { color: var(--ink); }
.form input:focus, .form select:focus, .form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(20,184,166,.25); }
.form textarea { resize: vertical; }
.form .btn { justify-self: start; }
.form-status { margin: 0; font-size: 0.92rem; color: #94a3b8; min-height: 1.4em; }
.form-status.error { color: #fca5a5; }
.form-status.ok { color: #5eead4; }

/* ---------- Footer ---------- */
.footer { background: var(--dark); color: #cbd5e1; border-top: 1px solid rgba(255,255,255,.08); padding: 40px 0; font-size: 0.92rem; }
.footer p { margin: 0; }
.footer .muted { color: #64748b; }
.footer-inner { display: grid; grid-template-columns: 1fr auto; gap: 20px 40px; align-items: center; }
.footer-links { display: flex; flex-wrap: wrap; gap: 22px; }
.footer-links a { text-decoration: none; }
.footer-links a:hover { color: #fff; }
.footer-copy { grid-column: 1 / -1; }

/* ---------- Legal page ---------- */
.legal { padding: 140px 0 96px; }
.legal h1 { font-size: clamp(2rem, 4vw, 2.8rem); }
.legal h2 { font-size: 1.3rem; margin-top: 2.2rem; }
.legal p, .legal li { color: var(--ink-2); }
.nav.nav-solid { background: rgba(255,255,255,.96); color: var(--ink); box-shadow: 0 1px 0 var(--line); }

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); row-gap: 36px; }
  .contact, .about { grid-template-columns: 1fr; gap: 40px; }
  .about-figure { order: -1; }
}

@media (max-width: 760px) {
  body { font-size: 16px; }
  .container { padding: 0 16px; }
  .section { padding: 72px 0; }
  .grid-2, .grid-3, .grid-4, .steps, .form-row { grid-template-columns: 1fr; }
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; color: var(--ink);
    padding: 8px 16px 18px; box-shadow: 0 12px 24px rgba(15,23,42,.12);
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 14px 0; border-bottom: 1px solid var(--line); }
  .nav-links .btn-small { margin-top: 14px; border-bottom: 0; }
  .nav.menu-open { background: #fff; color: var(--ink); }
  .hero-shade { background: linear-gradient(0deg, rgba(10,18,32,.95) 0%, rgba(10,18,32,.7) 55%, rgba(10,18,32,.35) 100%); }
  .hero-content { padding-top: 96px; padding-bottom: 96px; }
  .hero-caption { left: 16px; }
  .hero-credits { max-width: 50%; }
  .form { padding: 22px; }
  .footer-inner { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .nav, .faq summary::after { transition: none; }
}