:root {
  color-scheme: dark;
  --bg: #080d13;
  --bg-soft: #0c131c;
  --panel: #101923;
  --panel-2: #131f2b;
  --line: rgba(151, 176, 198, 0.16);
  --line-strong: rgba(151, 176, 198, 0.28);
  --text: #edf5fb;
  --muted: #91a5b7;
  --accent: #31d5c8;
  --accent-2: #58a6ff;
  --accent-glow: rgba(49, 213, 200, 0.18);
  --success: #6ee7b7;
  --max: 1180px;
  --radius: 18px;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 78% 10%, rgba(49, 213, 200, 0.09), transparent 28rem),
    radial-gradient(circle at 12% 28%, rgba(88, 166, 255, 0.08), transparent 24rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(255,255,255,0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, black, transparent 75%);
}

a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
img { max-width: 100%; }

.shell { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 1000; background: var(--accent); color: #03110f; padding: 10px 14px; border-radius: 8px; font-weight: 800; text-decoration: none; transition: top .2s ease; }
.skip-link:focus { top: 16px; }

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  right: 0;
  border-bottom: 1px solid transparent;
  transition: background .25s ease, border-color .25s ease, backdrop-filter .25s ease;
}
.site-header.is-scrolled { background: rgba(8, 13, 19, 0.82); border-color: var(--line); backdrop-filter: blur(18px); }
.nav-shell { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark { display: grid; place-items: center; width: 38px; height: 38px; border: 1px solid rgba(49, 213, 200, .55); border-radius: 10px; background: linear-gradient(145deg, rgba(49,213,200,.15), rgba(88,166,255,.08)); color: var(--accent); font-weight: 900; box-shadow: inset 0 0 20px rgba(49,213,200,.06); }
.brand-copy { display: flex; flex-direction: column; line-height: 1.15; }
.brand-copy strong { font-size: 14px; letter-spacing: .02em; }
.brand-copy small { margin-top: 4px; color: var(--muted); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; }
.site-nav { display: flex; align-items: center; gap: 30px; }
.site-nav a { color: var(--muted); font-size: 13px; font-weight: 700; letter-spacing: .05em; text-decoration: none; text-transform: uppercase; transition: color .2s ease; }
.site-nav a:hover, .site-nav a:focus-visible { color: var(--text); }
.nav-toggle { display: none; width: 42px; height: 42px; padding: 10px; border: 1px solid var(--line); border-radius: 10px; background: var(--panel); }
.nav-toggle span:not(.sr-only) { display: block; height: 2px; margin: 4px 0; background: var(--text); }

.hero { min-height: 860px; padding: 164px 0 112px; display: flex; align-items: center; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.04fr) minmax(430px, .96fr); align-items: center; gap: 78px; }
.eyebrow { margin: 0 0 20px; color: var(--accent); font-size: 12px; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { max-width: 760px; margin-bottom: 26px; font-size: clamp(48px, 6.6vw, 82px); line-height: .98; letter-spacing: -.05em; }
h2 { max-width: 780px; margin-bottom: 20px; font-size: clamp(34px, 4.6vw, 58px); line-height: 1.05; letter-spacing: -.04em; }
h3 { margin-bottom: 12px; font-size: 20px; letter-spacing: -.02em; }
.hero-lead, .section-heading > p:last-child { max-width: 720px; color: var(--muted); font-size: 18px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 36px 0 38px; }
.button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; padding: 0 20px; border: 1px solid var(--line-strong); border-radius: 11px; font-size: 13px; font-weight: 800; letter-spacing: .03em; text-decoration: none; transition: transform .2s ease, border-color .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-primary { border-color: var(--accent); background: var(--accent); color: #041311; box-shadow: 0 14px 40px rgba(49, 213, 200, .18); }
.button-secondary { background: rgba(255,255,255,.025); }
.button-secondary:hover { border-color: rgba(49,213,200,.48); background: rgba(49,213,200,.06); }
.hero-meta { display: flex; flex-wrap: wrap; gap: 10px 22px; color: var(--muted); font-size: 12px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.hero-meta span::before { content: ""; display: inline-block; width: 6px; height: 6px; margin-right: 9px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); vertical-align: 1px; }

.system-panel { position: relative; overflow: hidden; border: 1px solid var(--line-strong); border-radius: 22px; background: linear-gradient(145deg, rgba(18,30,41,.96), rgba(10,16,23,.96)); box-shadow: var(--shadow); }
.system-panel::before { content: ""; position: absolute; width: 260px; height: 260px; right: -120px; top: -120px; border-radius: 50%; background: var(--accent-glow); filter: blur(20px); }
.panel-bar { min-height: 52px; display: flex; align-items: center; gap: 10px; padding: 0 17px; border-bottom: 1px solid var(--line); color: var(--muted); font: 700 10px/1.2 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; letter-spacing: .08em; }
.status-dot {
  position: relative;
  width: 7px;
  height: 7px;
  flex: 0 0 7px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, #d8fff3 0 12%, var(--success) 42%, var(--accent) 100%);
  box-shadow: 0 0 8px rgba(127, 232, 196, .62);
}
.status-dot::after {
  content: "";
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(127, 232, 196, .42) 0 24%, rgba(83, 214, 208, .16) 45%, transparent 72%);
  opacity: 0;
  transform: scale(.68);
  animation: status-pulse 2.8s ease-out infinite;
}
@keyframes status-pulse {
  0%, 66%, 100% { opacity: 0; transform: scale(.68); }
  72% { opacity: .72; transform: scale(.86); }
  84% { opacity: .28; transform: scale(1.65); }
  94% { opacity: 0; transform: scale(2.05); }
}
.panel-state { margin-left: auto; color: var(--success); }
.panel-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); }
.metric-card { min-height: 142px; padding: 23px; background: rgba(12,20,28,.96); }
.metric-label { display: block; margin-bottom: 16px; color: var(--muted); font: 700 10px/1.2 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; letter-spacing: .08em; text-transform: uppercase; }
.metric-card strong { display: block; margin-bottom: 6px; font-size: 22px; letter-spacing: -.03em; }
.metric-card small { color: var(--muted); }
.signal-strip { height: 120px; display: flex; align-items: end; gap: 8px; padding: 24px; border-top: 1px solid var(--line); background: linear-gradient(to top, rgba(49,213,200,.04), transparent); }
.signal-strip span { flex: 1; height: var(--h); min-height: 8px; border-radius: 3px 3px 0 0; background: linear-gradient(to top, rgba(49,213,200,.28), var(--accent)); opacity: .8; }

.section { padding: 128px 0; border-top: 1px solid var(--line); }
.section-heading { margin-bottom: 56px; }
.capability-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.capability-card { min-height: 270px; padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: rgba(16, 25, 35, .64); transition: transform .25s ease, border-color .25s ease, background .25s ease; }
.capability-card:hover { transform: translateY(-5px); border-color: rgba(49,213,200,.32); background: rgba(18, 30, 41, .9); }
.card-index { display: inline-block; margin-bottom: 54px; color: var(--accent); font: 700 11px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.capability-card p { margin-bottom: 0; color: var(--muted); }
.section-deep { background: rgba(6, 11, 16, .72); }
.control-grid, .boundary-layout, .contact-grid { display: grid; grid-template-columns: .92fr 1.08fr; gap: 92px; align-items: start; }
.control-grid .section-heading, .boundary-layout .section-heading, .contact-grid .section-heading { margin-bottom: 0; }
.control-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.control-list li { display: grid; grid-template-columns: 52px 1fr; gap: 18px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.control-list li > span { color: var(--accent); font: 700 11px/1.8 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.control-list strong { font-size: 18px; }
.control-list p { margin: 4px 0 0; color: var(--muted); }
.boundary-card { padding: 34px; border: 1px solid rgba(49,213,200,.26); border-radius: var(--radius); background: linear-gradient(145deg, rgba(49,213,200,.07), rgba(88,166,255,.035)); }
.boundary-card ul { margin: 0; padding: 0; list-style: none; }
.boundary-card li { position: relative; padding: 16px 0 16px 30px; border-bottom: 1px solid var(--line); }
.boundary-card li:last-child { border-bottom: 0; }
.boundary-card li::before { content: "✓"; position: absolute; left: 0; color: var(--accent); font-weight: 900; }
.section-contact { background: linear-gradient(180deg, transparent, rgba(49,213,200,.035)); }
.contact-card { border-top: 1px solid var(--line); }
.contact-card > div { display: grid; grid-template-columns: 180px 1fr; gap: 22px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.contact-card span { color: var(--muted); font-size: 13px; }
.contact-card a { font-weight: 700; text-decoration: none; }
.contact-card a:hover { color: var(--accent); }


.architecture-flow {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px 26px;
  align-items: stretch;
}
.architecture-node {
  position: relative;
  min-height: 160px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: rgba(16, 25, 35, .72);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}
.architecture-node > span {
  position: absolute;
  top: 20px;
  left: 22px;
  color: var(--accent);
  font: 700 10px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  letter-spacing: .08em;
}
.architecture-node strong { margin-bottom: 8px; font-size: 17px; letter-spacing: -.02em; }
.architecture-node small { color: var(--muted); line-height: 1.5; }
.architecture-node-accent {
  border-color: rgba(49,213,200,.42);
  background: linear-gradient(145deg, rgba(49,213,200,.10), rgba(88,166,255,.045));
  box-shadow: inset 0 0 32px rgba(49,213,200,.035);
}
.architecture-connector {
  display: none;
  color: var(--accent);
  align-self: center;
  justify-self: center;
  font: 700 18px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.principles-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 86px; align-items: start; }
.principles-layout .section-heading { margin-bottom: 0; }
.principles-grid { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line); }
.principles-grid article { position: relative; min-height: 190px; padding: 28px 28px 28px 58px; border-bottom: 1px solid var(--line); }
.principles-grid article:nth-child(odd) { border-right: 1px solid var(--line); }
.principles-grid article > span { position: absolute; left: 0; top: 33px; color: var(--accent); font: 700 10px/1 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.principles-grid strong { display: block; margin-bottom: 10px; font-size: 18px; }
.principles-grid p { margin: 0; color: var(--muted); }

.site-footer { padding: 42px 0; border-top: 1px solid var(--line); background: #060a0f; }
.footer-shell { display: grid; grid-template-columns: 1fr auto auto; gap: 40px; align-items: end; color: var(--muted); font-size: 13px; }
.footer-shell strong { color: var(--text); }
.footer-shell p { margin: 3px 0 0; }
.footer-shell nav { display: flex; gap: 22px; }
.footer-shell a { text-decoration: none; }
.footer-shell a:hover { color: var(--text); }

.legal-page { min-height: 100vh; padding: 136px 0 80px; }
.legal-shell { width: min(calc(100% - 40px), 860px); margin-inline: auto; }
.legal-header { margin-bottom: 46px; }
.legal-header a { color: var(--accent); font-size: 13px; font-weight: 800; text-decoration: none; text-transform: uppercase; letter-spacing: .08em; }
.legal-header h1 { margin-top: 30px; font-size: clamp(42px, 6vw, 68px); }
.legal-copy { color: var(--muted); }
.legal-copy h2 { margin: 46px 0 14px; color: var(--text); font-size: 24px; letter-spacing: -.02em; }
.legal-copy li { margin-bottom: 10px; }
.legal-meta { color: var(--muted); font-size: 13px; }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .65s ease, transform .65s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (max-width: 980px) {
  .hero { min-height: auto; }
  .hero-grid, .control-grid, .boundary-layout, .contact-grid, .principles-layout { grid-template-columns: 1fr; gap: 56px; }
  .hero-grid { grid-template-columns: 1fr; }
  .system-panel { max-width: 680px; }
  .capability-grid, .architecture-flow { grid-template-columns: repeat(2, 1fr); }
  .footer-shell { grid-template-columns: 1fr; gap: 20px; align-items: start; }
}

@media (max-width: 720px) {
  .shell { width: min(calc(100% - 28px), var(--max)); }
  .nav-toggle { display: block; }
  .site-nav { position: absolute; top: 68px; left: 14px; right: 14px; display: none; flex-direction: column; align-items: stretch; gap: 0; padding: 8px; border: 1px solid var(--line); border-radius: 14px; background: rgba(10, 16, 23, .98); box-shadow: var(--shadow); }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 14px; }
  .hero { padding: 132px 0 84px; }
  h1 { font-size: clamp(44px, 14vw, 64px); }
  .hero-lead, .section-heading > p:last-child { font-size: 16px; }
  .panel-grid, .capability-grid, .architecture-flow, .principles-grid { grid-template-columns: 1fr; }
  .principles-grid article:nth-child(odd) { border-right: 0; }
  .principles-grid article { padding-left: 48px; }
  .metric-card { min-height: 120px; }
  .section { padding: 88px 0; }
  .contact-card > div { grid-template-columns: 1fr; gap: 4px; }
  .footer-shell nav { flex-wrap: wrap; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}