/* =============================================================================
   Ghost Continuum - Luminous Membrane / Crystal Sentinel
   Public product site design system
   Calm scientific elegance · living membrane · crystalline precision
   ============================================================================= */

:root {
  color-scheme: dark;

  /* Primitive - warm charcoal with indigo-teal undertone (never pure void) */
  --p-canvas: #0b1018;
  --p-canvas-mid: #0f1620;
  --p-surface: #121a24;
  --p-elevated: #182230;
  --p-pearl: #e8eef4;
  --p-slate: #8b9aab;
  --p-slate-soft: #6b7a8c;
  --p-teal: #5ec8c0;
  --p-teal-bright: #7ad8d0;
  --p-teal-deep: #3a9e96;
  --p-aurora: #8eb8c8;
  --p-success: #6bc4a0;
  --p-warning: #d4a574;
  --p-danger: #c97884;
  --p-focus: #5ec8c0;

  /* OKLCH twins (4.6) - same membrane hues, used by new surfaces */
  --ok-canvas: oklch(0.155 0.022 245);
  --ok-surface: oklch(0.195 0.024 243);
  --ok-elevated: oklch(0.235 0.026 242);
  --ok-pearl: oklch(0.942 0.012 230);
  --ok-slate: oklch(0.668 0.028 242);
  --ok-teal: oklch(0.776 0.082 192);
  --ok-success: oklch(0.742 0.078 168);

  /* Semantic */
  --bg-canvas: var(--p-canvas);
  --bg-surface: var(--p-surface);
  --bg-elevated: var(--p-elevated);
  --bg-muted: rgba(18, 26, 36, 0.72);
  --fg-default: var(--p-pearl);
  --fg-muted: var(--p-slate);
  --fg-subtle: var(--p-slate-soft);
  --fg-on-brand: #061016;
  --accent: var(--p-teal);
  --accent-hover: var(--p-teal-bright);
  --accent-soft: rgba(94, 200, 192, 0.12);
  --accent-border: rgba(94, 200, 192, 0.28);
  --success: var(--p-success);
  --warning: var(--p-warning);
  --danger: var(--p-danger);
  --info: var(--p-aurora);
  --border-default: rgba(142, 184, 200, 0.14);
  --border-strong: rgba(94, 200, 192, 0.32);
  --border-focus: rgba(94, 200, 192, 0.7);
  --focus-ring: 0 0 0 2px var(--bg-canvas), 0 0 0 4px rgba(94, 200, 192, 0.55);
  --focus-ring-offset: 2px;

  /* Surfaces */
  --surface-glass-bg: linear-gradient(165deg, rgba(28, 40, 56, 0.58), rgba(14, 20, 30, 0.82));
  --surface-glass-border: rgba(142, 184, 200, 0.16);
  --surface-glass-blur: 16px;
  --surface-grain-opacity: 0.025;
  --surface-specular: rgba(255, 255, 255, 0.055);
  --surface-depth-shadow: 0 16px 48px rgba(0, 0, 0, 0.22);

  /* Space (4px base) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-page-x: clamp(1.15rem, 2.4vw, 1.5rem);
  --space-section-y: clamp(3.25rem, 5.5vw, 5rem);

  /* Legacy aliases (existing markup) */
  --bg0: var(--bg-canvas);
  --bg1: var(--p-canvas-mid);
  --bg2: var(--bg-surface);
  --elev: rgba(18, 26, 36, 0.82);
  --glass: rgba(18, 26, 36, 0.55);
  --glass-border: var(--accent-border);
  --text: var(--fg-default);
  --muted: var(--fg-muted);
  --cyan: var(--accent);
  --cyan2: var(--accent-hover);
  --violet: var(--p-aurora);
  --violet2: #a8c8d4;
  --magenta: #9eb8c4;
  --ok: var(--success);
  --warn: var(--warning);
  --border: var(--border-default);
  --glow-cyan: 0 0 32px rgba(94, 200, 192, 0.18);
  --glow-mag: 0 0 28px rgba(142, 184, 200, 0.12);
  --glow-ok: 0 0 22px rgba(107, 196, 160, 0.2);

  /* Type - Fontshare Clash Display + Satoshi */
  --font: "Satoshi", system-ui, -apple-system, sans-serif;
  --font-sans: var(--font);
  --mono: ui-monospace, "Cascadia Code", "Segoe UI Mono", "SF Mono", monospace;
  --display: "Clash Display", "Satoshi", system-ui, sans-serif;
  --text-body: clamp(1rem, 0.96rem + 0.2vw, 1.125rem);
  --text-display: clamp(2rem, 1.2rem + 2.8vw, 3.4rem);
  --text-h2: clamp(1.4rem, 1.12rem + 1.1vw, 1.95rem);
  --text-ui: 0.9375rem;
  --text-caption: 0.8125rem;

  /* Radius / layout */
  --radius-sm: 8px;
  --radius: 16px;
  --radius-lg: 22px;
  --radius-pill: 999px;
  --radius-control: 12px;
  --nav-h: 4.25rem;
  --max: 1120px;
  --touch: 44px;

  /* Motion (premium-ui-motion unified set) */
  --motion-dur-instant: 50ms;
  --motion-dur-fast: 120ms;
  --motion-dur-base: 200ms;
  --motion-dur: 200ms;
  --motion-dur-slow: 320ms;
  --motion-dur-showcase: 250ms;
  --motion-dur-ambient: 1000ms;
  --motion-ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --motion-ease: var(--motion-ease-out);
  --motion-ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --motion-ease-spring: cubic-bezier(0.34, 1.45, 0.64, 1);
  --motion-ease-hover: ease;
  --ease: var(--motion-ease-out);
  --motion-distance: 8px;
  --motion-distance-sm: 4px;
  --motion-blur: 4px;
  --motion-blur-sm: 2px;
  --motion-scale: 0.97;
  --motion-stagger: 40ms;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 0.75rem);
  font-optical-sizing: auto;
}

@view-transition {
  navigation: auto;
}

body {
  font-family: var(--font);
  font-size: var(--text-body);
  color: var(--fg-default);
  min-height: 100vh;
  line-height: 1.6;
  letter-spacing: -0.01em;
  background:
    radial-gradient(ellipse 85% 50% at 15% -5%, rgba(94, 200, 192, 0.09), transparent 55%),
    radial-gradient(ellipse 60% 45% at 95% 10%, rgba(142, 184, 200, 0.06), transparent 50%),
    radial-gradient(ellipse 50% 35% at 50% 100%, rgba(94, 200, 192, 0.05), transparent 48%),
    linear-gradient(180deg, var(--bg-canvas) 0%, var(--p-canvas-mid) 45%, #0d141c 100%);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Soft membrane ambient (no CRT grid / scanlines) */
body::before {
  content: "";
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.4;
  background:
    radial-gradient(ellipse 70% 50% at 50% 20%, rgba(94, 200, 192, 0.04), transparent 70%);
}

body::after {
  content: "";
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 0;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 180px 180px;
}

a { color: var(--accent); text-decoration-thickness: 1px; text-underline-offset: 0.15em; }
a:hover { color: var(--accent-hover); }

img { max-width: 100%; height: auto; display: block; }

.skip-link {
  position: absolute;
  left: 0.5rem;
  top: 0.5rem;
  z-index: 10000;
  background: var(--accent);
  color: var(--fg-on-brand);
  padding: 0.7rem 1.15rem;
  min-height: var(--touch);
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-decoration: none;
  transform: translateY(-160%);
  transition: transform var(--motion-dur-fast) var(--motion-ease-out);
}
.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline: none;
  box-shadow: var(--focus-ring);
}

.page { position: relative; z-index: 1; }

/* ─── Nav ─── */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  backdrop-filter: blur(18px) saturate(1.15);
  -webkit-backdrop-filter: blur(18px) saturate(1.15);
  background: rgba(11, 16, 24, 0.72);
  border-bottom: 1px solid var(--border-default);
}
.site-nav .nav-inner {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.35rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.brand-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
  min-width: 0;
  transition: opacity var(--motion-dur-fast) var(--ease);
}
.brand-link:hover { opacity: 0.9; }
.brand-link img {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  box-shadow: 0 0 0 1px var(--accent-border), 0 8px 24px rgba(0, 0, 0, 0.25);
  flex-shrink: 0;
}
.brand-text .name {
  font-family: var(--display);
  font-size: 0.95rem;
  letter-spacing: -0.02em;
  color: var(--fg-default);
  font-weight: 600;
}
.brand-text .ver {
  font-size: 0.72rem;
  color: var(--fg-muted);
  margin-top: 0.12rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.nav-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.15rem 0.35rem;
  font-size: 0.8125rem;
  font-weight: 500;
}
.nav-links a {
  color: var(--fg-muted);
  text-decoration: none;
  letter-spacing: -0.01em;
  padding: 0.45rem 0.65rem;
  min-height: var(--touch);
  display: inline-flex;
  align-items: center;
  border-radius: 8px;
  scroll-margin-top: calc(var(--nav-h) + 0.75rem);
  transition:
    color var(--motion-dur-fast) var(--ease),
    background var(--motion-dur-fast) var(--ease);
}
.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--accent);
  background: var(--accent-soft);
  outline: none;
}
.nav-cta {
  display: none;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--bg-canvas);
  background: linear-gradient(135deg, var(--accent) 0%, var(--p-teal-deep) 100%);
  padding: 0.5rem 0.9rem;
  border-radius: 10px;
  transition:
    transform var(--motion-dur-fast) var(--motion-ease-spring),
    box-shadow var(--motion-dur-base) var(--ease),
    filter var(--motion-dur-fast) var(--ease);
  box-shadow: 0 4px 16px rgba(94, 200, 192, 0.22);
}
.nav-cta:hover {
  color: var(--bg-canvas);
  filter: brightness(1.06);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(94, 200, 192, 0.28);
}
.nav-cta:active { transform: scale(var(--motion-scale)); }
@media (min-width: 900px) {
  .nav-cta { display: inline-flex; align-items: center; }
}

/* ─── Hero ─── */
.hero {
  position: relative;
  min-height: min(90vh, 880px);
  display: grid;
  align-items: center;
  padding: 2.5rem 1.35rem 3.25rem;
  max-width: var(--max);
  margin: 0 auto;
  gap: 2rem;
}
@media (min-width: 960px) {
  .hero {
    grid-template-columns: 1.05fr 1fr;
    gap: 2.5rem;
    padding-top: 3rem;
  }
}
.hero-copy { position: relative; z-index: 2; }
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--success);
  border: 1px solid rgba(107, 196, 160, 0.32);
  background: rgba(107, 196, 160, 0.08);
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-pill);
  margin-bottom: 1.25rem;
}
.hero-badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 10px rgba(107, 196, 160, 0.55);
  animation: membraneBreath 2.8s ease-in-out infinite;
}
@keyframes membraneBreath {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(0.88); }
}
.hero h1 {
  font-family: var(--display);
  font-size: var(--text-display);
  line-height: 1.08;
  letter-spacing: -0.03em;
  font-weight: 700;
  margin-bottom: 0.85rem;
  color: var(--fg-default);
  text-wrap: balance;
  background: linear-gradient(120deg, var(--p-pearl) 0%, var(--accent) 55%, var(--p-aurora) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero .codename {
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: 1rem;
}
.hero .lead {
  font-size: 1.1rem;
  color: var(--fg-muted);
  max-width: 42ch;
  margin-bottom: 1.65rem;
  line-height: 1.65;
  text-wrap: pretty;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-bottom: 1.25rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.82rem 1.25rem;
  min-height: var(--touch);
  border-radius: var(--radius-control);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: var(--font);
  transition:
    transform var(--motion-dur-fast) var(--motion-ease-spring),
    box-shadow var(--motion-dur-base) var(--ease),
    border-color var(--motion-dur-fast) var(--ease),
    background var(--motion-dur-fast) var(--ease),
    color var(--motion-dur-fast) var(--ease);
}
.btn:hover { transform: translateY(-2px) scale(1.01); }
.btn:active { transform: scale(var(--motion-scale)); }
.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}
.btn-primary {
  background: linear-gradient(145deg, var(--accent) 0%, var(--p-teal-deep) 100%);
  color: #061016;
  border-color: rgba(180, 240, 235, 0.35);
  box-shadow: 0 8px 28px rgba(94, 200, 192, 0.22);
}
.btn-primary:hover {
  box-shadow: 0 12px 36px rgba(94, 200, 192, 0.3);
  color: #061016;
}
.btn-secondary {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--accent-border);
}
.btn-secondary:hover {
  box-shadow: var(--glow-cyan);
  background: rgba(94, 200, 192, 0.16);
}
.btn-ghost {
  background: transparent;
  color: var(--fg-muted);
  border-color: rgba(139, 154, 171, 0.28);
}
.btn-ghost:hover {
  color: var(--fg-default);
  border-color: var(--accent-border);
  background: rgba(94, 200, 192, 0.05);
}
.btn-sm {
  padding: 0.5rem 0.85rem;
  font-size: 0.8rem;
  border-radius: 10px;
}

.hero-stage {
  position: relative;
  z-index: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--accent-border);
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, rgba(94, 200, 192, 0.08), transparent 60%),
    linear-gradient(165deg, rgba(18, 26, 36, 0.95), rgba(11, 16, 24, 0.98));
  box-shadow:
    var(--glow-cyan),
    0 28px 64px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
  min-height: 280px;
  aspect-ratio: 16 / 11;
  transition:
    box-shadow var(--motion-dur-slow) var(--ease),
    border-color var(--motion-dur-base) var(--ease);
}
.hero-stage:hover {
  border-color: rgba(94, 200, 192, 0.4);
  box-shadow:
    0 0 40px rgba(94, 200, 192, 0.22),
    0 32px 72px rgba(0, 0, 0, 0.38),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
.hero-stage canvas,
.hero-stage .holo-canvas {
  display: block;
  width: 100%;
  height: 100%;
}
.hero-stage .stage-chrome {
  position: absolute;
  inset: 0;
  pointer-events: none;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  z-index: 2;
}
.stage-top,
.stage-bot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: rgba(94, 200, 192, 0.72);
  text-transform: uppercase;
}
.stage-top .live {
  color: var(--success);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 500;
}
.stage-top .live::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px rgba(107, 196, 160, 0.6);
  animation: membraneBreath 2.2s ease-in-out infinite;
}
.stage-bot span { color: var(--fg-muted); }

/* ─── Sections ─── */
.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: var(--space-section-y) var(--space-page-x);
}
.section-label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.55rem;
}
.section-title {
  font-family: var(--display);
  font-size: var(--text-h2);
  letter-spacing: -0.025em;
  margin-bottom: 0.7rem;
  font-weight: 600;
  line-height: 1.15;
  color: var(--fg-default);
  text-wrap: balance;
}
.section-lead {
  color: var(--fg-muted);
  max-width: 58ch;
  margin-bottom: 1.85rem;
  font-size: 1.02rem;
  line-height: 1.65;
}

/* Value chips */
.value-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  max-width: var(--max);
  margin: -0.25rem auto 0;
  padding: 0 1.35rem 1.25rem;
}
.chip {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--fg-muted);
  border: 1px solid var(--border-default);
  background: rgba(94, 200, 192, 0.05);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-pill);
  transition:
    border-color var(--motion-dur-fast) var(--ease),
    background var(--motion-dur-fast) var(--ease),
    transform var(--motion-dur-fast) var(--motion-ease-spring);
}
.chip:hover {
  border-color: var(--accent-border);
  background: var(--accent-soft);
  transform: translateY(-1px);
}
.chip strong { color: var(--accent); font-weight: 600; }

/* Glass / membrane panel */
.glass {
  background:
    linear-gradient(165deg, rgba(24, 34, 48, 0.72), rgba(14, 20, 30, 0.88));
  border: 1px solid var(--border-default);
  border-radius: var(--radius);
  backdrop-filter: blur(14px) saturate(1.1);
  -webkit-backdrop-filter: blur(14px) saturate(1.1);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.045),
    0 12px 40px rgba(0, 0, 0, 0.18);
}

/* ─── Planes explorer ─── */
.planes-layout {
  display: grid;
  gap: 1.35rem;
}
@media (min-width: 900px) {
  .planes-layout {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
  }
}
.planes-orbit {
  position: relative;
  min-height: 340px;
  padding: 1.35rem;
  display: grid;
  place-items: center;
}
.orbit-core {
  width: 118px;
  height: 118px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  text-align: center;
  font-family: var(--display);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  font-weight: 600;
  color: var(--accent);
  border: 1px solid rgba(94, 200, 192, 0.38);
  background:
    radial-gradient(circle at 38% 28%, rgba(94, 200, 192, 0.22), transparent 55%),
    radial-gradient(circle at 50% 50%, rgba(18, 26, 36, 0.95), rgba(11, 16, 24, 0.98));
  box-shadow: var(--glow-cyan), inset 0 0 24px rgba(94, 200, 192, 0.08);
  z-index: 2;
  animation: membraneBreath 5s ease-in-out infinite;
}
.orbit-core small {
  display: block;
  font-family: var(--font);
  font-size: 0.62rem;
  font-weight: 500;
  color: var(--fg-muted);
  letter-spacing: 0.04em;
  margin-top: 0.3rem;
}
.plane-nodes {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.6rem;
  width: 100%;
  margin-top: 1.1rem;
}
@media (min-width: 560px) {
  .plane-nodes { grid-template-columns: repeat(4, 1fr); }
}
.plane-node {
  appearance: none;
  width: 100%;
  text-align: left;
  cursor: pointer;
  font-family: var(--font);
  color: var(--fg-default);
  background: rgba(94, 200, 192, 0.04);
  border: 1px solid var(--border-default);
  border-radius: 14px;
  padding: 0.75rem 0.8rem;
  transition:
    border-color var(--motion-dur-base) var(--ease),
    box-shadow var(--motion-dur-base) var(--ease),
    transform var(--motion-dur-fast) var(--motion-ease-spring),
    background var(--motion-dur-base) var(--ease);
}
.plane-node:hover,
.plane-node:focus-visible {
  border-color: var(--accent-border);
  box-shadow: var(--glow-cyan), 0 8px 24px rgba(0, 0, 0, 0.15);
  transform: translateY(-3px);
  outline: none;
  background: rgba(94, 200, 192, 0.08);
}
.plane-node[aria-pressed="true"] {
  border-color: rgba(94, 200, 192, 0.5);
  background: rgba(94, 200, 192, 0.12);
  box-shadow:
    0 0 0 1px rgba(94, 200, 192, 0.15),
    var(--glow-cyan);
}
.plane-node .num {
  font-family: var(--mono);
  font-size: 0.62rem;
  color: var(--p-aurora);
  letter-spacing: 0.08em;
  margin-bottom: 0.25rem;
}
.plane-node .lbl {
  font-family: var(--display);
  font-size: 0.78rem;
  letter-spacing: -0.01em;
  font-weight: 600;
  color: var(--accent);
}
.plane-detail {
  padding: 1.45rem 1.5rem;
  min-height: 280px;
}
.plane-detail h3 {
  font-family: var(--display);
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.55rem;
}
.plane-detail p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  margin-bottom: 0.9rem;
  line-height: 1.6;
}
.plane-detail ul {
  margin: 0 0 0.75rem 1.1rem;
  color: var(--fg-default);
  font-size: 0.92rem;
}
.plane-detail li { margin-bottom: 0.4rem; }
.plane-detail .cap-tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--success);
  border: 1px solid rgba(107, 196, 160, 0.3);
  padding: 0.3rem 0.55rem;
  border-radius: 8px;
  margin-top: 0.5rem;
  background: rgba(107, 196, 160, 0.08);
}

/* ─── Nexus demo ─── */
.demo-grid {
  display: grid;
  gap: 1.1rem;
}
@media (min-width: 900px) {
  .demo-grid { grid-template-columns: 1.2fr 0.8fr; }
}
.demo-stage {
  padding: 1.1rem;
  min-height: 320px;
  position: relative;
}
.demo-stage canvas {
  width: 100%;
  height: 260px;
  display: block;
  border-radius: 12px;
  background: rgba(8, 12, 18, 0.55);
  border: 1px solid var(--border-default);
}
.demo-log {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--fg-muted);
  max-height: 88px;
  overflow: auto;
  margin-top: 0.75rem;
  line-height: 1.55;
}
.demo-log .ok { color: var(--success); }
.demo-log .warn { color: var(--warning); }
.demo-log .hot { color: var(--accent); }
.demo-controls {
  padding: 1.2rem 1.3rem;
  display: flex;
  flex-direction: column;
  gap: 1.05rem;
}
.morph-stack {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}
.morph-btn {
  appearance: none;
  cursor: pointer;
  font-family: var(--font);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--fg-muted);
  background: rgba(11, 16, 24, 0.45);
  border: 1px solid var(--border-default);
  border-radius: 10px;
  padding: 0.6rem 0.5rem;
  min-height: var(--touch);
  transition:
    color var(--motion-dur-fast) var(--ease),
    border-color var(--motion-dur-fast) var(--ease),
    background var(--motion-dur-base) var(--ease),
    transform var(--motion-dur-fast) var(--motion-ease-spring),
    box-shadow var(--motion-dur-base) var(--ease);
}
.morph-btn:hover,
.morph-btn:focus-visible {
  color: var(--accent);
  border-color: var(--accent-border);
  outline: none;
  transform: translateY(-1px);
}
.morph-btn[aria-pressed="true"] {
  color: #061016;
  background: linear-gradient(135deg, var(--accent), var(--p-teal-deep));
  border-color: transparent;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(94, 200, 192, 0.25);
}
.lifecycle {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}
.lifecycle .step {
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.4rem 0.65rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(139, 154, 171, 0.22);
  color: var(--fg-muted);
  transition:
    color var(--motion-dur-base) var(--ease),
    border-color var(--motion-dur-base) var(--ease),
    background var(--motion-dur-base) var(--ease),
    box-shadow var(--motion-dur-base) var(--ease);
}
.lifecycle .step.active {
  color: var(--success);
  border-color: rgba(107, 196, 160, 0.45);
  background: rgba(107, 196, 160, 0.1);
  box-shadow: var(--glow-ok);
}
.lifecycle .step.done {
  color: var(--accent);
  border-color: var(--accent-border);
  background: var(--accent-soft);
}
.demo-gauges {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.7rem;
}
.mini-gauge { text-align: center; }
.mini-gauge svg { width: 72px; height: 72px; margin: 0 auto; }
.mini-gauge .val {
  font-family: var(--display);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  margin-top: -0.35rem;
}
.mini-gauge .lbl {
  font-size: 0.65rem;
  letter-spacing: 0.06em;
  color: var(--fg-muted);
  text-transform: uppercase;
  font-weight: 500;
}

/* ─── Home Shield ─── */
.shield-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.shield-card {
  padding: 1.25rem 1.3rem;
  position: relative;
  overflow: hidden;
  transition:
    border-color var(--motion-dur-base) var(--ease),
    transform var(--motion-dur-fast) var(--motion-ease-spring),
    box-shadow var(--motion-dur-base) var(--ease);
}
.shield-card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), var(--p-aurora), transparent);
  opacity: 0.75;
}
.shield-card:hover {
  border-color: var(--accent-border);
  transform: translateY(-3px);
  box-shadow: var(--glow-cyan), 0 16px 40px rgba(0, 0, 0, 0.2);
}
.shield-card h3 {
  font-family: var(--display);
  font-size: 0.95rem;
  letter-spacing: -0.015em;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.shield-card p {
  font-size: 0.92rem;
  color: var(--fg-muted);
  line-height: 1.55;
}

/* ─── Efficacy ─── */
.metrics-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
}
.metric-card {
  padding: 1.25rem;
  text-align: center;
  transition:
    transform var(--motion-dur-fast) var(--motion-ease-spring),
    border-color var(--motion-dur-base) var(--ease),
    box-shadow var(--motion-dur-base) var(--ease);
}
.metric-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-border);
  box-shadow: var(--glow-cyan);
}
.metric-card svg {
  width: 100px;
  height: 100px;
  margin: 0 auto 0.35rem;
}
.metric-card .m-val {
  font-family: var(--display);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: -0.02em;
}
.metric-card .m-lbl {
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-top: 0.3rem;
  font-weight: 500;
}
.metrics-note {
  font-size: 0.82rem;
  color: var(--fg-muted);
  margin-top: 1.1rem;
  font-family: var(--mono);
}
.spark {
  width: 100%;
  height: 36px;
  margin-top: 0.5rem;
}

/* ─── Install ─── */
.install-panel {
  padding: 1.45rem 1.5rem;
}
.install-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 0.95rem;
}
.tab-btn {
  appearance: none;
  cursor: pointer;
  font-family: var(--font);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--fg-muted);
  background: transparent;
  border: 1px solid var(--border-default);
  border-radius: 10px;
  padding: 0.5rem 0.9rem;
  min-height: var(--touch);
  transition:
    color var(--motion-dur-fast) var(--ease),
    background var(--motion-dur-fast) var(--ease),
    border-color var(--motion-dur-fast) var(--ease);
}
.tab-btn[aria-selected="true"] {
  color: #061016;
  background: var(--accent);
  border-color: transparent;
  font-weight: 600;
}
.tab-btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}
.code-block {
  position: relative;
  background: rgba(8, 12, 18, 0.65);
  border: 1px solid var(--border-default);
  border-radius: 14px;
  padding: 1.1rem 1.2rem;
  margin-bottom: 1.1rem;
}
.code-block pre {
  font-family: var(--mono);
  font-size: 0.84rem;
  line-height: 1.7;
  color: #c0d8e0;
  white-space: pre-wrap;
  overflow-x: auto;
}
.copy-btn {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
}
.walkthrough {
  display: grid;
  gap: 0.7rem;
  margin-top: 1.35rem;
}
.walk-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  align-items: start;
  padding: 0.95rem 1.1rem;
  transition:
    border-color var(--motion-dur-base) var(--ease),
    transform var(--motion-dur-fast) var(--ease);
}
.walk-step:hover {
  border-color: var(--accent-border);
  transform: translateX(2px);
}
.walk-num {
  font-family: var(--display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent);
  width: 1.85rem;
}
.walk-step strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.walk-step span {
  font-size: 0.88rem;
  color: var(--fg-muted);
  line-height: 1.5;
}
.eta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--success);
  letter-spacing: 0.02em;
  margin-bottom: 0.9rem;
}

/* ─── Ecosystem ─── */
.eco-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.8rem;
}
.eco-card {
  display: block;
  text-decoration: none;
  padding: 1.1rem 1.15rem;
  border-radius: 14px;
  border: 1px solid var(--border-default);
  background:
    linear-gradient(145deg, rgba(24, 34, 48, 0.7), rgba(14, 20, 30, 0.9));
  transition:
    border-color var(--motion-dur-base) var(--ease),
    box-shadow var(--motion-dur-base) var(--ease),
    transform var(--motion-dur-fast) var(--motion-ease-spring);
}
.eco-card:hover {
  border-color: var(--accent-border);
  box-shadow: var(--glow-cyan);
  transform: translateY(-3px);
}
.eco-card strong {
  display: block;
  font-family: var(--display);
  font-size: 0.9rem;
  letter-spacing: -0.015em;
  font-weight: 600;
  color: var(--fg-default);
  margin-bottom: 0.3rem;
}
.eco-card span {
  font-size: 0.84rem;
  color: var(--fg-muted);
  line-height: 1.45;
}

/* ─── Legal / FAQ ─── */
.legal-banner {
  padding: 1.2rem 1.35rem;
  border-left: 3px solid var(--success);
  margin-bottom: 2.25rem;
}
.legal-banner strong { color: var(--success); font-weight: 600; }
.legal-banner p {
  color: var(--fg-muted);
  font-size: 0.92rem;
  margin-top: 0.4rem;
  line-height: 1.6;
}
.faq-list {
  display: grid;
  gap: 0.6rem;
}
.faq-item {
  border-radius: 14px;
  border: 1px solid var(--border-default);
  background: rgba(14, 20, 30, 0.72);
  overflow: hidden;
  transition: border-color var(--motion-dur-base) var(--ease);
}
.faq-item:hover { border-color: var(--accent-border); }
.faq-item summary {
  cursor: pointer;
  list-style: none;
  font-family: var(--display);
  font-size: 0.92rem;
  letter-spacing: -0.015em;
  font-weight: 600;
  padding: 1rem 1.15rem;
  min-height: var(--touch);
  color: var(--fg-default);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-family: var(--mono);
  color: var(--accent);
  font-size: 1.15rem;
  font-weight: 400;
  transition: transform var(--motion-dur-fast) var(--ease);
}
.faq-item[open] summary::after {
  content: "−";
}
.faq-item summary:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--accent);
}
.faq-item .ans {
  padding: 0 1.15rem 1.1rem;
  color: var(--fg-muted);
  font-size: 0.92rem;
  line-height: 1.6;
}

.roadmap-teaser {
  margin-top: 2.25rem;
  padding: 1.25rem 1.35rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
}
.roadmap-teaser p {
  color: var(--fg-muted);
  font-size: 0.92rem;
  max-width: 52ch;
  line-height: 1.55;
}

/* ─── Footer ─── */
.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.75rem 1.35rem 5.5rem;
  border-top: 1px solid var(--border-default);
  font-size: 0.78rem;
  color: var(--fg-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1.15rem;
  align-items: center;
}
.site-footer a {
  color: var(--fg-muted);
  text-decoration: none;
  transition: color var(--motion-dur-fast) var(--ease);
}
.site-footer a:hover { color: var(--accent); }
.site-footer .sep { opacity: 0.3; }

/* Global focus */
:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* Reveal on scroll (progressive) */
@media (prefers-reduced-motion: no-preference) {
  .section,
  .value-strip {
    animation: fadeRise 0.7s var(--motion-ease-out) both;
  }
  @keyframes fadeRise {
    from {
      opacity: 0;
      transform: translateY(12px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  @view-transition { navigation: none; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .hero-badge .dot,
  .stage-top .live::before,
  .orbit-core { animation: none !important; }
}

@media (prefers-reduced-transparency: reduce) {
  .glass,
  .site-nav,
  .eco-card,
  .code-block {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    background: var(--bg-elevated);
  }
}

/* High contrast */
@media (prefers-contrast: more) {
  :root {
    --fg-muted: #b0c0d0;
    --border-default: rgba(94, 200, 192, 0.42);
    --accent-border: rgba(94, 200, 192, 0.55);
  }
  .glass, .plane-node, .shield-card, .eco-card {
    border-width: 2px;
  }
}

/* Print */
@media print {
  body::before, body::after, .site-nav, .hero-stage, .projects-panel { display: none !important; }
  body { background: #fff; color: #000; }
  a { color: #000; }
}