/* ═══════════════════════════════════════════════════════════════
   HEXSTELLAR — Premium Computational Intelligence Homepage
   Palette: #1b1b1b base · #f5f5f5 ink · #d4b87a gold accent
   ═══════════════════════════════════════════════════════════════ */

/* ───────────────────────────── RESET ───────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: #1b1b1b;
  color: #f5f5f5;
  min-height: 100vh;
  line-height: 1.5;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
input, textarea { font: inherit; }
::selection { background: #d4b87a; color: #1b1b1b; }

/* ───────────────────────────── TOKENS ───────────────────────────── */
:root {
  --bg: #1b1b1b;
  --surface-1: #232323;
  --surface-2: #2a2a2a;
  --surface-3: #303030;
  --ink: #f5f5f5;
  --ink-soft: #bdbdbd;
  --ink-mute: #707070;
  --gold: #d4b87a;
  --gold-soft: #e6cf99;
  --violet: #b59cf0;
  --lime: #c6f56e;
  --border: rgba(255,255,255,0.08);
  --border-strong: rgba(255,255,255,0.16);

  --display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --body: 'Inter', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, 'SF Mono', monospace;

  --container: 1240px;
  --pad-x: clamp(20px, 4vw, 56px);

  --ease: cubic-bezier(.22,.61,.36,1);
  --ease-out: cubic-bezier(.16,1,.3,1);
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad-x);
  width: 100%;
}

/* ───────────────────────────── GLOBAL DECOR ───────────────────────────── */
.grid-bg {
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 0%, transparent 90%);
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 50% 30%, #000 0%, transparent 90%);
  pointer-events: none;
  z-index: 0;
}

#particles {
  position: fixed; inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.65;
}

.cursor-glow {
  position: fixed;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212,184,122,0.08) 0%, rgba(212,184,122,0) 60%);
  pointer-events: none;
  z-index: 2;
  transform: translate(-50%, -50%);
  transition: opacity .3s ease;
  opacity: 0;
  mix-blend-mode: screen;
  will-change: transform;
}
@media (hover: hover) { body:hover .cursor-glow { opacity: 1; } }

/* ───────────────────────────── NAV ───────────────────────────── */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px var(--pad-x);
  gap: 24px;
  transition: backdrop-filter .35s var(--ease), background .35s var(--ease), border-color .35s var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(27,27,27,0.72);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border-bottom-color: var(--border);
}

.logo { display: flex; align-items: center; gap: 10px; color: var(--ink); }
.logo-mark { width: 26px; height: 26px; flex: none; }
.logo-word {
  font-family: var(--display);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.22em;
}

.nav-links {
  display: flex; gap: 36px;
  margin-left: auto; margin-right: 24px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.nav-links a {
  position: relative;
  color: var(--ink-soft);
  transition: color .25s var(--ease);
  padding: 6px 0;
}
.nav-links a::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: 0;
  height: 1px; background: var(--gold);
  transform: scaleX(0); transform-origin: left;
  transition: transform .35s var(--ease);
}
.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { transform: scaleX(1); }

/* ── language switcher ── */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,0.025);
  margin-right: 10px;
  flex: none;
}
.lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--ink-mute);
  transition: background .25s var(--ease), color .25s var(--ease);
}
.lang-btn:hover { color: var(--ink-soft); }
.lang-btn.active {
  background: rgba(212,184,122,0.14);
  color: var(--gold);
}
.lang-btn .flag {
  width: 16px; height: 11px;
  border-radius: 2px;
  overflow: hidden;
  display: block;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.06);
  flex: none;
}
.lang-btn .flag svg { width: 100%; height: 100%; display: block; }

.nav-burger {
  display: none;
  width: 36px; height: 36px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  border: 1px solid var(--border);
  border-radius: 8px;
}
.nav-burger span {
  width: 14px; height: 1.2px; background: var(--ink);
  transition: transform .3s var(--ease), opacity .3s var(--ease);
}
.nav-burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(3.5px) rotate(45deg); }
.nav-burger[aria-expanded="true"] span:nth-child(2) { transform: translateY(-3px) rotate(-45deg); }

/* ───────────────────────────── BUTTONS ───────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 22px;
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: transform .25s var(--ease), background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease), box-shadow .35s var(--ease);
  position: relative;
  white-space: nowrap;
  cursor: pointer;
}
.btn-sm { padding: 9px 16px; font-size: 11px; }
.btn svg { transition: transform .35s var(--ease); }
.btn:hover svg { transform: translateX(3px); }

.btn-primary {
  background: var(--ink);
  color: #1b1b1b;
  border: 1px solid var(--ink);
  box-shadow: 0 0 0 1px rgba(245,245,245,0.0), 0 12px 40px -12px rgba(245,245,245,0.4);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 0 1px rgba(245,245,245,0.3), 0 18px 50px -10px rgba(245,245,245,0.55);
}

.btn-ghost {
  background: rgba(255,255,255,0.03);
  color: var(--ink);
  border: 1px solid var(--border-strong);
  backdrop-filter: blur(8px);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.32);
  transform: translateY(-1px);
}

/* ───────────────────────────── COMMON TEXT ───────────────────────────── */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ink-soft);
  background: rgba(255,255,255,0.02);
  margin-bottom: 28px;
}
.eyebrow .dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 12px var(--gold);
  animation: pulse 2.4s ease-in-out infinite;
}
.eyebrow-text { white-space: nowrap; }

.section-label {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-bottom: 28px;
}
.section-label .bar {
  width: 24px; height: 1px;
  background: var(--gold);
}

.section-head {
  max-width: 720px;
  margin-bottom: 80px;
}
.section-title {
  font-family: var(--display);
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}
.section-sub {
  font-size: 17px;
  color: var(--ink-soft);
  max-width: 580px;
  line-height: 1.55;
}

.grad {
  background: linear-gradient(135deg, var(--ink) 0%, var(--gold) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
}
.grad-soft {
  background: linear-gradient(135deg, var(--ink) 0%, var(--gold-soft) 80%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.muted { color: var(--ink-mute); }

.live-dot {
  display: inline-block;
  width: 6px; height: 6px;
  margin-right: 6px;
  border-radius: 50%;
  background: #9eff8a;
  box-shadow: 0 0 8px rgba(158,255,138,0.7);
  animation: pulse 2s ease-in-out infinite;
  vertical-align: middle;
}

/* ───────────────────────────── HERO ───────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 120px var(--pad-x) 80px;
  display: flex; align-items: center;
  z-index: 3;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -20%; left: -10%;
  width: 80%; height: 100%;
  background: radial-gradient(ellipse at center, rgba(212,184,122,0.06) 0%, rgba(212,184,122,0) 60%);
  pointer-events: none;
  filter: blur(40px);
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 200px;
  background: linear-gradient(to bottom, transparent, rgba(27,27,27,0.6));
  pointer-events: none;
}

.hero-inner {
  position: relative;
  max-width: var(--container);
  width: 100%;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 60px;
  align-items: center;
  z-index: 2;
}

.hero-title {
  font-family: var(--display);
  font-size: clamp(44px, 6.4vw, 88px);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.025em;
  margin-bottom: 28px;
}

.hero-sub {
  font-size: clamp(16px, 1.4vw, 19px);
  line-height: 1.6;
  color: var(--ink-soft);
  max-width: 540px;
  margin-bottom: 40px;
}
.hero-sub em { font-style: normal; color: var(--ink); font-weight: 500; }

.hero-actions {
  display: flex; flex-wrap: wrap; gap: 14px;
  margin-bottom: 60px;
}

.hero-meta {
  display: flex; gap: 36px; flex-wrap: wrap;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}
.meta-cell { display: flex; flex-direction: column; gap: 4px; }
.meta-k {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--ink-mute);
  text-transform: uppercase;
}
.meta-v {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--ink);
}

/* hero visual */
.hero-visual {
  position: relative;
  aspect-ratio: 1;
  width: 100%;
  max-width: 520px;
  margin-left: auto;
}
.orbit-stage {
  position: relative;
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
}
.orbit-ring {
  position: absolute; border-radius: 50%;
  border: 1px solid var(--border-strong);
  inset: 0;
  animation: orbit-spin 30s linear infinite;
}
.orbit-ring.r1 { inset: 0%;  border-color: rgba(255,255,255,0.06); }
.orbit-ring.r2 { inset: 10%; border-color: rgba(255,255,255,0.1); animation-duration: 60s; animation-direction: reverse; }
.orbit-ring.r3 { inset: 22%; border-color: rgba(212,184,122,0.18); animation-duration: 90s; }
.orbit-ring.r2::before, .orbit-ring.r3::before {
  content: ''; position: absolute;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 14px var(--gold);
  top: -3px; left: 50%; transform: translateX(-50%);
}
.orbit-ring.r1::before {
  content: ''; position: absolute;
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--ink);
  box-shadow: 0 0 12px rgba(245,245,245,0.8);
  top: -2px; left: 50%; transform: translateX(-50%);
}
@keyframes orbit-spin { to { transform: rotate(360deg); } }

.hex-core {
  position: relative;
  width: 90%; height: 90%;
  z-index: 1;
  filter: drop-shadow(0 0 40px rgba(212,184,122,0.15));
}
.hex-rotate-slow { transform-origin: 200px 200px; animation: orbit-spin 80s linear infinite; }
.hex-rotate-rev  { transform-origin: 200px 200px; animation: orbit-spin 60s linear infinite reverse; }
.hex-pulse { animation: corePulse 4s ease-in-out infinite; transform-origin: 200px 200px; }
@keyframes corePulse { 0%,100% { opacity:1; transform: scale(1);} 50% { opacity: .8; transform: scale(1.04);} }
.hex-nodes circle { animation: nodePulse 3s ease-in-out infinite; }
.hex-nodes circle:nth-child(2) { animation-delay: 0.4s; }
.hex-nodes circle:nth-child(3) { animation-delay: 0.8s; }
.hex-nodes circle:nth-child(4) { animation-delay: 1.2s; }
.hex-nodes circle:nth-child(5) { animation-delay: 1.6s; }
.hex-nodes circle:nth-child(6) { animation-delay: 2s; }
@keyframes nodePulse { 0%,100% { r: 3; } 50% { r: 4.6; } }

@keyframes pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

/* scroll hint */
.scroll-hint {
  position: absolute;
  left: var(--pad-x); bottom: 36px;
  display: flex; align-items: center; gap: 14px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.22em;
  color: var(--ink-mute);
  z-index: 5;
}
.scroll-line {
  position: relative;
  width: 1px; height: 40px;
  background: var(--border-strong);
  overflow: hidden;
}
.scroll-line::after {
  content: ''; position: absolute;
  top: 0; left: 0; right: 0; height: 14px;
  background: var(--ink);
  animation: scrollPulse 2.4s var(--ease) infinite;
}
@keyframes scrollPulse {
  0%   { transform: translateY(-100%); opacity: 0; }
  30%  { opacity: 1; }
  100% { transform: translateY(300%); opacity: 0; }
}

/* ───────────────────────────── MANIFEST ───────────────────────────── */
.manifest {
  position: relative;
  padding: 160px 0 140px;
  z-index: 3;
}
.manifest::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  width: 1px; height: 80px;
  background: linear-gradient(to bottom, transparent, var(--gold));
  transform: translateX(-50%);
}
.manifest-text {
  font-family: var(--display);
  font-size: clamp(32px, 4.4vw, 60px);
  font-weight: 400;
  line-height: 1.18;
  letter-spacing: -0.02em;
  max-width: 1100px;
  margin: 0 0 100px;
}

.manifest-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  padding-top: 60px;
  border-top: 1px solid var(--border);
}
.manifest-cell {
  display: flex; flex-direction: column; gap: 16px;
  padding: 28px 0 0;
  position: relative;
}
.manifest-cell::before {
  content: ''; position: absolute;
  top: 0; left: 0;
  width: 36px; height: 1px;
  background: var(--gold);
}
.mc-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--gold);
  letter-spacing: 0.18em;
}
.mc-line {
  font-family: var(--display);
  font-size: clamp(18px, 1.6vw, 22px);
  font-weight: 400;
  color: var(--ink);
  line-height: 1.3;
}

/* ───────────────────────────── SYSTEMS / CONCEPTS ───────────────────────────── */
.systems {
  position: relative;
  padding: 140px 0;
  z-index: 3;
}
.concepts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow: hidden;
}
.concept {
  position: relative;
  padding: 44px 36px 40px;
  background: #1b1b1b;
  transition: background .4s var(--ease);
  overflow: hidden;
  isolation: isolate;
}
.concept::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(circle at var(--mx,50%) var(--my,50%), rgba(212,184,122,0.08), transparent 50%);
  opacity: 0;
  transition: opacity .4s var(--ease);
  z-index: -1;
}
.concept:hover { background: #1f1f1f; }
.concept:hover::before { opacity: 1; }

.concept-icon {
  width: 56px; height: 56px;
  margin-bottom: 28px;
  display: flex; align-items: center; justify-content: center;
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(255,255,255,0.04), rgba(255,255,255,0.0));
  position: relative;
  transition: border-color .35s var(--ease), color .35s var(--ease), transform .4s var(--ease);
}
.concept-icon svg { width: 30px; height: 30px; }
.concept:hover .concept-icon {
  border-color: rgba(212,184,122,0.4);
  color: var(--gold-soft);
  transform: translateY(-2px);
}

.concept h3 {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 10px;
}
.concept p {
  font-size: 15px;
  line-height: 1.55;
  color: var(--ink-soft);
}
.concept-tag {
  position: absolute;
  top: 28px; right: 28px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--ink-mute);
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
}

/* ───────────────────────────── CORE ───────────────────────────── */
.core {
  position: relative;
  padding: 140px 0 160px;
  z-index: 3;
  background:
    radial-gradient(ellipse 60% 70% at 80% 50%, rgba(212,184,122,0.06), transparent 70%),
    radial-gradient(ellipse 40% 50% at 10% 30%, rgba(181,156,240,0.04), transparent 70%);
}
.core-inner {
  display: grid;
  grid-template-columns: 1fr 1.05fr;
  gap: 80px;
  align-items: center;
}
.core-copy { max-width: 520px; }

.core-stats {
  display: flex; flex-wrap: wrap;
  gap: 40px;
  margin-top: 56px;
  padding-top: 36px;
  border-top: 1px solid var(--border);
}
.stat { flex: 1 1 120px; min-width: 120px; }
.stat-n {
  font-family: var(--display);
  font-size: 44px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 8px;
  display: inline-flex;
  align-items: baseline;
}
.stat-n .suffix { font-size: 24px; color: var(--gold); margin-left: 2px; }
.stat-l {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

.core-visual {
  position: relative;
  aspect-ratio: 1;
  width: 100%;
  max-width: 580px;
  margin-left: auto;
}
.network {
  position: relative;
  width: 100%; height: 100%;
  z-index: 1;
  filter: drop-shadow(0 0 50px rgba(212,184,122,0.1));
}
.lattice { animation: latticeBreath 8s ease-in-out infinite; transform-origin: 260px 260px; }
@keyframes latticeBreath { 0%,100% { opacity: 0.7; } 50% { opacity: 1; } }

.core-readouts {
  position: absolute;
  bottom: 8%;
  left: 50%; transform: translateX(-50%);
  display: flex; gap: 8px;
  padding: 10px 14px;
  background: rgba(27,27,27,0.85);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border);
  border-radius: 999px;
  z-index: 5;
}
.readout {
  display: flex; align-items: center; gap: 8px;
  padding: 0 12px;
  font-family: var(--mono);
  font-size: 10px;
}
.readout + .readout { border-left: 1px solid var(--border); }
.readout-k { color: var(--ink-mute); letter-spacing: 0.14em; }
.readout-v { color: var(--ink); letter-spacing: 0.06em; }

/* ───────────────────────────── APPLICATIONS ───────────────────────────── */
.applications {
  position: relative;
  padding: 140px 0;
  z-index: 3;
}
.app-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}
.app-card {
  position: relative;
  display: flex; flex-direction: column;
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: linear-gradient(180deg, rgba(255,255,255,0.025), rgba(255,255,255,0.005));
  transition: border-color .35s var(--ease), transform .35s var(--ease), background .35s var(--ease);
  overflow: hidden;
  grid-column: span 2;
  min-height: 280px;
}
.app-card.big { grid-column: span 3; }
.app-card:hover {
  border-color: rgba(212,184,122,0.3);
  transform: translateY(-3px);
  background: linear-gradient(180deg, rgba(212,184,122,0.04), rgba(255,255,255,0.005));
}

.app-art {
  height: 140px;
  margin: -12px -12px 16px;
  border-radius: 10px;
  background:
    repeating-linear-gradient(0deg, transparent, transparent 22px, rgba(255,255,255,0.03) 22px, rgba(255,255,255,0.03) 23px),
    repeating-linear-gradient(90deg, transparent, transparent 22px, rgba(255,255,255,0.03) 22px, rgba(255,255,255,0.03) 23px),
    radial-gradient(ellipse at center, rgba(212,184,122,0.06), transparent 65%),
    #1d1d1d;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
  position: relative;
}
.app-art.small { height: 110px; }
.app-art svg { width: 80%; max-width: 200px; }

.app-body { flex: 1; display: flex; flex-direction: column; }
.app-num {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.app-card h3 {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}
.app-card p {
  font-size: 14.5px;
  color: var(--ink-soft);
  line-height: 1.55;
}

/* ───────────────────────────── CTA ───────────────────────────── */
.cta {
  position: relative;
  padding: 160px var(--pad-x) 140px;
  z-index: 3;
  overflow: hidden;
  text-align: center;
}
.cta-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  display: flex; align-items: center; justify-content: center;
}
.cta-bg svg { width: 100%; height: 100%; }

.cta-inner { max-width: 760px; margin: 0 auto; }
.cta .section-label { justify-content: center; }
.cta-title {
  font-family: var(--display);
  font-size: clamp(40px, 5.4vw, 76px);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin-bottom: 24px;
}
.cta-sub {
  font-size: 17px;
  color: var(--ink-soft);
  margin: 0 auto 40px;
  max-width: 540px;
}

.cta-form { max-width: 540px; margin: 0 auto; }
.form-row {
  display: flex;
  gap: 8px;
  padding: 8px;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  background: rgba(255,255,255,0.025);
  backdrop-filter: blur(10px);
  transition: border-color .3s var(--ease);
}
.form-row:focus-within { border-color: var(--gold); }
.form-row input {
  flex: 1;
  padding: 10px 18px;
  background: transparent;
  border: none;
  color: var(--ink);
  font-size: 15px;
  outline: none;
  min-width: 0;
}
.form-row input::placeholder { color: var(--ink-mute); }
.form-row .btn { padding: 12px 22px; }

.form-note {
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-mute);
  text-transform: uppercase;
}
.form-success {
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
  text-transform: uppercase;
}

/* ───────────────────────────── FOOTER ───────────────────────────── */
.footer {
  position: relative;
  z-index: 3;
  border-top: 1px solid var(--border);
  background: #181818;
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 80px;
  padding: 80px var(--pad-x);
  align-items: start;
}
.footer-brand { display: flex; flex-direction: column; gap: 20px; }
.footer-brand .logo { margin-bottom: 0; }
.footer-tag {
  font-size: 14px;
  color: var(--ink-soft);
  max-width: 280px;
  line-height: 1.5;
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}
.footer-col { display: flex; flex-direction: column; gap: 12px; }
.footer-h {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 6px;
}
.footer-col a {
  font-size: 14px;
  color: var(--ink-soft);
  transition: color .25s var(--ease), transform .25s var(--ease);
  display: inline-block;
}
.footer-col a:hover { color: var(--ink); transform: translateX(2px); }
.footer-status {
  font-size: 13px;
  color: var(--ink-soft);
}
.footer-meta {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ink-mute);
  letter-spacing: 0.1em;
}

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 22px 0;
  background: #161616;
}
.fb-inner {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ink-mute);
}

/* ───────────────────────────── REVEAL ANIMATION ───────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .9s var(--ease-out), transform .9s var(--ease-out);
  transition-delay: calc(var(--reveal-d, 0) * 1ms);
}
.reveal.in {
  opacity: 1;
  transform: translateY(0);
}

/* ───────────────────────────── RESPONSIVE ───────────────────────────── */
@media (max-width: 1000px) {
  .nav-links { display: none; position: fixed; top: 64px; left: 16px; right: 16px;
    flex-direction: column; gap: 0;
    padding: 20px; background: rgba(27,27,27,0.96);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border);
    border-radius: 16px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 14px 8px; border-bottom: 1px solid var(--border); font-size: 14px; }
  .nav-links a:last-child { border-bottom: none; }
  .nav-burger { display: flex; }
  .nav .nav-cta { display: none; }

  .hero { padding-top: 100px; }
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-visual {
    order: -1;
    max-width: 360px;
    margin: 0 auto;
  }

  .core-inner {
    grid-template-columns: 1fr;
    gap: 60px;
  }
  .core-visual { margin: 0 auto; }
  .core-copy { max-width: none; }

  .concepts-grid { grid-template-columns: repeat(2, 1fr); }
  .manifest-grid { grid-template-columns: 1fr; gap: 24px; }
  .manifest-cell { padding-top: 24px; }

  .app-grid { grid-template-columns: repeat(2, 1fr); }
  .app-card { grid-column: span 1; }
  .app-card.big { grid-column: span 2; }

  .footer-inner { grid-template-columns: 1fr; gap: 50px; }
  .footer-cols { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 640px) {
  .hero {
    min-height: auto;
    padding: 100px var(--pad-x) 60px;
  }
  .hero-meta { gap: 24px; }
  .scroll-hint { display: none; }

  .manifest { padding: 100px 0; }
  .systems { padding: 100px 0; }
  .core { padding: 100px 0 120px; }
  .applications { padding: 100px 0; }
  .cta { padding: 100px var(--pad-x); }

  .concepts-grid { grid-template-columns: 1fr; }
  .concept { padding: 36px 28px 32px; }

  .app-grid { grid-template-columns: 1fr; }
  .app-card, .app-card.big { grid-column: span 1; min-height: 240px; }

  .form-row { flex-direction: column; padding: 8px; gap: 6px; border-radius: 18px; }
  .form-row input { padding: 14px 14px; text-align: center; }
  .form-row .btn { justify-content: center; padding: 14px; }

  .footer-cols { grid-template-columns: 1fr 1fr; gap: 30px; }
  .footer-inner { padding: 60px var(--pad-x); }
  .fb-inner { flex-direction: column; gap: 10px; text-align: center; }

  .core-stats { gap: 28px; }
  .stat-n { font-size: 34px; }
  .stat-n .suffix { font-size: 20px; }

  .section-head { margin-bottom: 50px; }
  .core-readouts { font-size: 9px; }
  .readout { padding: 0 6px; }
  .core-readouts { gap: 4px; padding: 8px 8px; }
}

/* ───────────────────────────── ORIGIN (HEX × STELLAR) ───────────────────────────── */
.origin {
  position: relative;
  padding: 140px 0 120px;
  z-index: 3;
  background:
    radial-gradient(ellipse 50% 60% at 20% 30%, rgba(212,184,122,0.05), transparent 70%),
    radial-gradient(ellipse 50% 60% at 80% 70%, rgba(245,245,245,0.04), transparent 70%);
}
.origin-head { max-width: 760px; margin-bottom: 70px; }

.origin-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 60px;
}

.origin-panel {
  position: relative;
  padding: 44px 40px 40px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.025), rgba(255,255,255,0.005)),
    #1d1d1d;
  overflow: hidden;
  isolation: isolate;
  min-height: 700px;
  display: flex;
  flex-direction: column;
}
.origin-panel::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(212,184,122,0.5), transparent);
}

.op-corner {
  position: absolute;
  width: 12px; height: 12px;
  border: 1px solid var(--ink-mute);
  opacity: 0.5;
}
.op-corner.tl { top: 14px; left: 14px; border-right: none; border-bottom: none; }
.op-corner.tr { top: 14px; right: 14px; border-left: none; border-bottom: none; }
.op-corner.bl { bottom: 14px; left: 14px; border-right: none; border-top: none; }
.op-corner.br { bottom: 14px; right: 14px; border-left: none; border-top: none; }

.op-marker {
  position: absolute;
  top: 24px; right: 24px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--gold);
  padding: 4px 10px;
  border: 1px solid rgba(212,184,122,0.25);
  border-radius: 999px;
  background: rgba(212,184,122,0.05);
}

.op-glyph {
  position: relative;
  width: 100%;
  margin: 8px 0 24px;
  display: flex; align-items: center; justify-content: center;
}
.op-glyph svg { width: 100%; max-width: 320px; height: auto; }

.op-word {
  font-family: var(--display);
  line-height: 0.9;
  letter-spacing: -0.04em;
  margin-bottom: 14px;
}
.op-w-big {
  font-size: clamp(56px, 7vw, 96px);
  font-weight: 500;
  background: linear-gradient(180deg, #f5f5f5 0%, rgba(245,245,245,0.4) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stellar-panel .op-w-big {
  background: linear-gradient(180deg, #ffffff 0%, #d4b87a 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.op-tagline {
  font-family: var(--display);
  font-size: clamp(18px, 1.6vw, 22px);
  font-weight: 400;
  color: var(--ink);
  line-height: 1.3;
  margin-bottom: 28px;
  max-width: 320px;
}

.op-list {
  list-style: none;
  margin: 0 0 24px;
  padding: 18px 0 0;
  border-top: 1px solid var(--border);
  display: flex; flex-direction: column;
  gap: 12px;
  flex: 1;
}
.op-list li {
  display: flex;
  gap: 14px;
  align-items: baseline;
  font-size: 14px;
  line-height: 1.5;
}
.op-k {
  flex: 0 0 88px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gold);
  text-transform: lowercase;
}
.op-v { color: var(--ink-soft); flex: 1; }

.op-coda {
  font-family: var(--display);
  font-size: 16px;
  color: var(--ink);
  line-height: 1.4;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-style: italic;
  opacity: 0.9;
}

/* equation strip */
.origin-equation {
  display: flex; align-items: center; flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  padding: 28px 32px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,0.015);
  max-width: 880px;
  margin: 0 auto;
}
.oe-side {
  font-family: var(--display);
  font-size: clamp(20px, 2.6vw, 32px);
  font-weight: 500;
  letter-spacing: -0.01em;
  background: linear-gradient(135deg, var(--ink), var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.oe-op {
  width: 18px; height: 18px;
  color: var(--ink-mute);
  flex: none;
}
.oe-result {
  font-family: var(--display);
  font-size: clamp(15px, 1.4vw, 17px);
  color: var(--ink-soft);
  font-style: italic;
}

/* ───────────────────────────── MISSION BAND ───────────────────────────── */
.mission {
  position: relative;
  padding: 140px var(--pad-x) 130px;
  text-align: center;
  overflow: hidden;
  z-index: 3;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #1a1a1a 0%, #1b1b1b 100%);
}
.mission-bg {
  position: absolute; inset: 0;
  z-index: -1;
  opacity: 0.7;
}
.mission-bg svg { width: 100%; height: 100%; }

.mission-mark {
  display: inline-flex; align-items: center;
  gap: 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--gold);
  margin-bottom: 32px;
}
.mm-line { width: 36px; height: 1px; background: var(--gold); display: inline-block; }
.mm-text { white-space: nowrap; }

.mission-statement {
  font-family: var(--display);
  font-size: clamp(34px, 5.2vw, 68px);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.025em;
  margin: 0 auto 60px;
  max-width: 1080px;
}

.mission-rule {
  display: inline-flex; align-items: center;
  gap: 16px;
  padding: 14px 20px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255,255,255,0.025);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ink-mute);
  text-transform: uppercase;
}
.mr-bar {
  position: relative;
  display: inline-block;
  width: 180px; height: 4px;
  background: rgba(255,255,255,0.06);
  border-radius: 4px;
  overflow: hidden;
}
.mr-fill {
  position: absolute; left: 0; top: 0; bottom: 0;
  width: 0;
  background: linear-gradient(90deg, var(--ink), var(--gold));
  border-radius: 4px;
  animation: mrFill 2.4s var(--ease-out) forwards;
  animation-delay: .4s;
}
@keyframes mrFill { to { width: 88%; } }
.mr-v {
  color: var(--gold);
  font-size: 13px;
  letter-spacing: 0.12em;
}

/* ───────────────────────────── TRAJECTORY ───────────────────────────── */
.trajectory {
  position: relative;
  padding: 160px 0 140px;
  z-index: 3;
  overflow: hidden;
}
.trajectory-bg {
  position: absolute; inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.85;
}
.trajectory-bg svg { width: 100%; height: 100%; }

.trajectory-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 80px;
  align-items: start;
}
.trajectory-copy { max-width: 640px; }

.trajectory-lede {
  font-family: var(--display);
  font-size: clamp(20px, 1.95vw, 25px);
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 30px;
}

.trajectory-body {
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-soft);
  margin-bottom: 22px;
  max-width: 580px;
}

.trajectory-rule {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 44px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}
.tr-cell {
  display: flex; flex-direction: column;
  gap: 6px;
  padding-right: 16px;
  position: relative;
}
.tr-cell + .tr-cell { padding-left: 24px; border-left: 1px solid var(--border); }
.tr-k {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--ink-mute);
  text-transform: uppercase;
}
.tr-v {
  font-family: var(--display);
  font-size: 15px;
  color: var(--ink);
  letter-spacing: -0.005em;
}

/* vessel card */
.vessel-card {
  position: sticky;
  top: 100px;
  padding: 36px 32px 28px;
  border: 1px solid var(--border);
  border-radius: 20px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01)),
    #1c1c1c;
  overflow: hidden;
}
.vessel-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(212,184,122,0.6), transparent);
}

.fc-id {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--ink-mute);
  text-transform: uppercase;
  margin-bottom: 24px;
  padding: 6px 10px;
  border: 1px dashed var(--border-strong);
  border-radius: 999px;
}
.fc-id-no { color: var(--gold); }

.fc-portrait {
  width: 100%;
  aspect-ratio: 1;
  margin-bottom: 24px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 14px;
  background:
    radial-gradient(ellipse at center, rgba(212,184,122,0.08), transparent 70%),
    #1a1a1a;
  position: relative;
  overflow: hidden;
}
.fc-portrait::before {
  content: '';
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 22px 22px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000 30%, transparent 90%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 50%, #000 30%, transparent 90%);
}
.fc-portrait svg { position: relative; width: 88%; height: 88%; z-index: 1; }

.fc-rows {
  display: flex; flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--border);
  margin-bottom: 18px;
}
.fc-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 11px;
}
.fc-k { color: var(--ink-mute); letter-spacing: 0.16em; }
.fc-v { color: var(--ink); letter-spacing: 0.04em; }

.fc-direct {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 16px;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  background: rgba(255,255,255,0.02);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
  text-transform: uppercase;
  transition: border-color .3s var(--ease), background .3s var(--ease), transform .3s var(--ease);
}
.fc-direct:hover {
  border-color: rgba(212,184,122,0.5);
  background: rgba(212,184,122,0.04);
  transform: translateY(-1px);
}
.fc-direct-mail { color: var(--gold); text-transform: lowercase; letter-spacing: 0.04em; }

/* footer attribution link */
.fb-link {
  color: var(--ink-soft);
  border-bottom: 1px solid rgba(212,184,122,0.4);
  transition: color .25s var(--ease), border-color .25s var(--ease);
}
.fb-link:hover { color: var(--gold); border-color: var(--gold); }

/* ───────────────────────────── ORIGIN / TRAJECTORY — RESPONSIVE ───────────────────────────── */
@media (max-width: 1000px) {
  .origin-grid { grid-template-columns: 1fr; }
  .origin-panel { min-height: auto; }

  .trajectory-inner { grid-template-columns: 1fr; gap: 50px; }
  .vessel-card { position: relative; top: 0; max-width: 460px; margin: 0 auto; }
  .trajectory-copy { max-width: none; }
}

@media (max-width: 640px) {
  .origin { padding: 90px 0; }
  .origin-panel { padding: 32px 26px 28px; }
  .op-w-big { font-size: 56px; }
  .op-marker { font-size: 10px; padding: 3px 8px; }
  .op-k { flex: 0 0 72px; font-size: 10px; }
  .op-list li { font-size: 13px; }
  .origin-equation { padding: 22px 18px; gap: 10px; border-radius: 20px; }
  .oe-result { flex-basis: 100%; text-align: center; margin-top: 6px; }

  .mission { padding: 90px var(--pad-x); }
  .mission-statement { font-size: 32px; margin-bottom: 40px; }
  .mr-bar { width: 100px; }

  .trajectory { padding: 90px 0 100px; }
  .trajectory-rule { grid-template-columns: 1fr; gap: 18px; padding-top: 24px; }
  .tr-cell + .tr-cell { padding-left: 0; border-left: none; border-top: 1px solid var(--border); padding-top: 18px; }

  .lang-switch { margin-right: 6px; }
  .lang-btn { padding: 5px 8px; font-size: 10px; }
  .lang-btn .flag { width: 14px; height: 10px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
}