:root {
  --ink:      #0B1020;
  --ink-2:    #0E1426;
  --ink-3:    #131B33;
  --slate:    #2A3550;
  --signal:   #5FE3C0;
  --signal-2: #7C8CF8;
  --paper:    #EAEEF7;
  --muted:    #8A97B8;

  --maxw: 1180px;
  --gutter: clamp(20px, 5vw, 64px);
  --radius: 14px;

  --display: "Space Grotesk", system-ui, sans-serif;
  --body: "Inter", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  /* faint structural blueprint grid */
  background-image:
    linear-gradient(rgba(42,53,80,0.16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42,53,80,0.16) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: center top;
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding-inline: var(--gutter); }

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--signal);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: var(--signal);
  opacity: 0.7;
}

/* ---- buttons ---- */
.btn {
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: 10px;
  border: 1px solid transparent;
  transition: transform .18s ease, background .18s ease, border-color .18s ease;
}
.btn--primary { background: var(--signal); color: #04261E; font-weight: 500; }
.btn--primary:hover { transform: translateY(-2px); }
.btn--ghost { border-color: var(--slate); color: var(--paper); }
.btn--ghost:hover { border-color: var(--signal); color: var(--signal); }
.btn .arrow { transition: transform .18s ease; }
.btn:hover .arrow { transform: translateX(4px); }

:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; border-radius: 4px; }

/* ---- header ---- */
header.site {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(8px);
  background: color-mix(in srgb, var(--ink) 78%, transparent);
  border-bottom: 1px solid rgba(42,53,80,0.5);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 70px;
}
.brand {
  font-family: var(--display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.01em;
  display: inline-flex; align-items: center; gap: 10px;
}
.brand .dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 4px rgba(95,227,192,0.15);
}
.nav-links { display: flex; gap: 30px; font-family: var(--mono); font-size: 13px; color: var(--muted); }
.nav-links a:hover { color: var(--paper); }
.nav .btn { padding: 10px 16px; }
@media (max-width: 820px) { .nav-links { display: none; } }

/* ---- hero ---- */
.hero { padding-top: clamp(48px, 8vw, 96px); padding-bottom: clamp(40px, 7vw, 88px); }
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(28px, 5vw, 64px);
  align-items: center;
}
.hero h1 {
  font-family: var(--display);
  font-weight: 600;
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  line-height: 0.98;
  letter-spacing: -0.03em;
  margin: 22px 0 0;
}
.hero h1 .accent { color: var(--signal); }
.hero p.lead {
  color: var(--muted);
  font-size: clamp(1rem, 1.4vw, 1.18rem);
  max-width: 46ch;
  margin: 22px 0 0;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }
@media (max-width: 880px) {
  .hero-grid { grid-template-columns: 1fr; }
  .graph-card { order: -1; }
}

/* ---- graph signature ---- */
.graph-card {
  position: relative;
  border: 1px solid var(--slate);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 120% at 70% 10%, rgba(124,140,248,0.10), transparent 55%),
    var(--ink-2);
  padding: 18px;
  overflow: hidden;
}
.graph-card .meta {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--mono); font-size: 11px; color: var(--muted);
  letter-spacing: 0.12em; text-transform: uppercase;
  margin-bottom: 6px;
}
.graph-card .live { display: inline-flex; align-items: center; gap: 7px; color: var(--signal); }
.graph-card .live .pip {
  width: 7px; height: 7px; border-radius: 50%; background: var(--signal);
  animation: blink 1.8s ease-in-out infinite;
}
@keyframes blink { 0%,100% { opacity: 1; } 50% { opacity: 0.25; } }
svg.graph { width: 100%; height: auto; display: block; }

.node-code  { font-family: var(--mono); font-size: 9px; font-weight: 500; letter-spacing: 0.08em; fill: var(--signal); }
.node-code.core { fill: var(--signal); }
.node-label { font-family: var(--mono); font-size: 10px; letter-spacing: 0.07em; fill: var(--paper);
              paint-order: stroke; stroke: var(--ink-2); stroke-width: 3.5px; stroke-linejoin: round; }
.node-sub   { font-family: var(--mono); font-size: 8px; fill: var(--muted);
              paint-order: stroke; stroke: var(--ink-2); stroke-width: 3px; stroke-linejoin: round; }

/* ---- generic section ---- */
section { padding-block: clamp(56px, 9vw, 110px); }
.section-head { max-width: 620px; margin-bottom: 48px; }
.section-head h2 {
  font-family: var(--display); font-weight: 600;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  line-height: 1.04; letter-spacing: -0.02em; margin: 16px 0 0;
}
.section-head p { color: var(--muted); margin: 14px 0 0; }

/* ---- capabilities ---- */
.cap-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
@media (max-width: 720px) { .cap-grid { grid-template-columns: 1fr; } }
.cap {
  border: 1px solid var(--slate);
  border-radius: var(--radius);
  background: var(--ink-2);
  padding: 26px;
  transition: border-color .2s ease, transform .2s ease, background .2s ease;
}
.cap:hover { border-color: color-mix(in srgb, var(--signal) 60%, var(--slate)); transform: translateY(-3px); }
.cap .tag {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  color: var(--signal); text-transform: uppercase;
}
.cap h3 { font-family: var(--display); font-weight: 600; font-size: 1.35rem; margin: 16px 0 8px; letter-spacing: -0.01em; }
.cap p { color: var(--muted); font-size: 0.98rem; margin: 0; }

/* ---- process pipeline (a real sequence -> numbered) ---- */
.pipe { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border: 1px solid var(--slate); border-radius: var(--radius); overflow: hidden; }
@media (max-width: 820px) { .pipe { grid-template-columns: 1fr; } }
.step { padding: 28px 26px; position: relative; background: var(--ink-2); }
.step + .step { border-left: 1px solid var(--slate); }
@media (max-width: 820px) { .step + .step { border-left: none; border-top: 1px solid var(--slate); } }
.step .num { font-family: var(--mono); font-size: 12px; color: var(--signal-2); letter-spacing: 0.1em; }
.step h3 { font-family: var(--display); font-weight: 600; font-size: 1.2rem; margin: 14px 0 8px; }
.step p { color: var(--muted); font-size: 0.92rem; margin: 0; }
.step .flow { position: absolute; top: 34px; right: -1px; color: var(--slate); font-family: var(--mono); }
@media (max-width: 820px) { .step .flow { display: none; } }

/* ---- telemetry strip (metrics as readouts) ---- */
.telemetry {
  border: 1px solid var(--slate); border-radius: var(--radius);
  background: var(--ink-2);
  display: grid; grid-template-columns: repeat(4, 1fr);
  font-family: var(--mono);
}
@media (max-width: 720px) { .telemetry { grid-template-columns: repeat(2, 1fr); } }
.stat { padding: 26px; border-right: 1px solid var(--slate); }
.stat:last-child { border-right: none; }
@media (max-width: 720px) {
  .stat:nth-child(2) { border-right: none; }
  .stat:nth-child(1), .stat:nth-child(2) { border-bottom: 1px solid var(--slate); }
}
.stat .k { font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); }
.stat .v { font-family: var(--display); font-weight: 600; font-size: clamp(1.8rem, 3vw, 2.4rem); margin-top: 10px; letter-spacing: -0.02em; }
.stat .v small { color: var(--signal); font-size: 0.5em; vertical-align: super; }

/* ---- contact ---- */
.contact-card {
  border: 1px solid var(--slate); border-radius: 20px;
  background:
    radial-gradient(90% 140% at 100% 0%, rgba(95,227,192,0.10), transparent 55%),
    var(--ink-2);
  padding: clamp(36px, 6vw, 72px);
  text-align: center;
}
.contact-card h2 { font-family: var(--display); font-weight: 600; font-size: clamp(2rem, 4.5vw, 3.2rem); letter-spacing: -0.025em; margin: 18px 0 0; line-height: 1.02; }
.contact-card p { color: var(--muted); margin: 16px auto 0; max-width: 48ch; }
.contact-card .hero-cta { justify-content: center; }

/* ---- footer ---- */
footer.site { border-top: 1px solid rgba(42,53,80,0.5); padding-block: 40px; }
.foot { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; font-family: var(--mono); font-size: 13px; color: var(--muted); }
.foot a:hover { color: var(--signal); }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto; }
}