/* =================================================================
AXIOM Design Spec v2.1
Navy #0A2463 · Gold #B8972E · DM Sans + JetBrains Mono · 8px grid
================================================================= */

:root {
  --navy:        #0A2463;
  --navy-2:      #061847;
  --navy-3:      #051232;
  --gold:        #B8972E;
  --gold-2:      #E5C46B;
  --gold-3:      #8C6E1A;
  --paper:       #F8F6F1;
  --paper-2:     #EFEAE0;
  --ink:         #0B0F1A;
  --ink-2:       #1F2435;
  --line:        #DAD3C4;
  --line-2:      #C4BBA7;
  --muted:       #5C6370;
  --ok:          #00C853;
  --err:         #FF2D00;
  --warn:        #FFB300;
  --radius:      6px;
  --radius-sm:   4px;
  --radius-lg:   10px;
  --container:   1200px;
  --pad:         clamp(20px, 4vw, 48px);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: 'DM Sans', system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01","cv11";
}
img, svg { display: block; max-width: 100%; }
code, pre, .mono { font-family: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace; }
a { color: inherit; }
button { font: inherit; }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--navy); color: var(--paper); padding: 12px 16px; z-index: 1000;
}
.skip:focus { left: 16px; top: 16px; }

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

/* =================================================================
Classification banner
================================================================= */
.classification-banner {
  position: sticky; top: 0; z-index: 60;
  display: flex; align-items: center; gap: 10px;
  padding: 6px 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.06em;
  background: var(--ink); color: var(--paper);
  border-bottom: 1px solid #1f2435;
}
.classification-banner .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--gold); box-shadow: 0 0 10px var(--gold);
}
.classification-banner .cls-spacer { flex: 1; }
.classification-banner .cls-utc { color: var(--gold-2); }

/* =================================================================
Nav
================================================================= */
.nav {
  position: sticky; top: 25px; z-index: 50;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 14px var(--pad);
  background: rgba(248, 246, 241, 0.85);
  backdrop-filter: blur(14px) saturate(160%);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  text-decoration: none;
  color: var(--navy);
  font-weight: 800; letter-spacing: 0.08em;
}
.brand-mark {
  display: inline-block;
  width: 26px; height: 26px;
  border-radius: 5px;
  background: var(--navy);
  position: relative;
}
.brand-mark::before {
  content: "A";
  position: absolute; inset: 0;
  display: grid; place-items: center;
  font-family: 'DM Sans', sans-serif; font-weight: 800; color: var(--gold-2);
  font-size: 16px;
}
.brand-word { font-size: 18px; }
.nav-links {
  display: flex; gap: 22px;
  justify-content: center;
  font-size: 14px; font-weight: 500;
}
.nav-links a {
  text-decoration: none; color: var(--ink-2);
  padding: 6px 0;
  border-bottom: 1px solid transparent;
  transition: color 120ms, border-color 120ms;
}
.nav-links a:hover { color: var(--navy); border-bottom-color: var(--gold); }
.nav-cta {
  text-decoration: none;
  font-size: 13px; font-weight: 600;
  padding: 9px 14px;
  border: 1px solid var(--navy);
  color: var(--navy);
  border-radius: var(--radius);
  transition: all 150ms;
}
.nav-cta:hover { background: var(--navy); color: var(--paper); }
@media (max-width: 880px) {
  .nav-links { display: none; }
  .nav { grid-template-columns: auto 1fr auto; }
}

/* =================================================================
Buttons
================================================================= */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 22px;
  border-radius: var(--radius);
  font-weight: 600; font-size: 15px;
  text-decoration: none;
  transition: transform 100ms, background 150ms, color 150ms, border-color 150ms;
}
.btn-primary {
  background: var(--navy); color: var(--paper);
  border: 1px solid var(--navy);
}
.btn-primary:hover { background: var(--navy-2); transform: translateY(-1px); }
.btn-ghost {
  background: transparent; color: var(--navy);
  border: 1px solid var(--line-2);
}
.btn-ghost:hover { border-color: var(--navy); }

.kbd {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.08em;
  padding: 4px 8px;
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  color: var(--ink-2);
  text-transform: uppercase;
}

/* =================================================================
Section primitives
================================================================= */
section { padding: clamp(72px, 9vw, 140px) 0; position: relative; }
.kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 14px;
}
.kicker .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--navy);
}
.kicker .dot-gold { background: var(--gold); }
.section-title {
  margin: 0 0 18px;
  font-size: clamp(30px, 4.6vw, 54px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-weight: 700;
  color: var(--navy);
  max-width: 24ch;
}
.lede {
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.6;
  color: var(--ink-2);
  max-width: 72ch;
  margin: 0 0 40px;
}

/* =================================================================
HERO
================================================================= */
.hero {
  position: relative;
  padding: clamp(60px, 7vw, 100px) var(--pad) clamp(80px, 10vw, 140px);
  background: linear-gradient(180deg, var(--navy) 0%, var(--navy-2) 75%, var(--navy-3) 100%);
  color: var(--paper);
  overflow: hidden;
  isolation: isolate;
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(184,151,46,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(184,151,46,0.08) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at top right, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at top right, #000 30%, transparent 75%);
  pointer-events: none;
}
.hero-inner {
  position: relative; z-index: 2;
  max-width: var(--container); margin: 0 auto;
}
.hero-meta {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.1em;
  color: var(--gold-2);
  text-transform: uppercase;
  margin-bottom: 22px;
}
.hero-meta .kbd {
  border-color: var(--gold-3);
  color: var(--gold-2);
}
.hero-meta-sep { opacity: 0.4; }

.hero-title {
  font-size: clamp(40px, 7vw, 84px);
  line-height: 1.0;
  letter-spacing: -0.025em;
  font-weight: 800;
  margin: 0 0 28px;
  color: var(--paper);
}
.hero-title span { display: block; }
.hero-title-accent {
  background: linear-gradient(120deg, var(--gold-2) 0%, var(--gold) 60%, var(--gold-3) 100%);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.hero-lede {
  max-width: 70ch;
  font-size: clamp(16px, 1.6vw, 19px);
  line-height: 1.6;
  color: rgba(248, 246, 241, 0.82);
  margin: 0 0 46px;
}
.hero-lede em { font-style: normal; color: var(--gold-2); font-weight: 600; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0;
  border-top: 1px solid rgba(184,151,46,0.25);
  border-bottom: 1px solid rgba(184,151,46,0.25);
  margin: 0 0 48px;
}
.hero-stats > div {
  padding: 24px 18px 22px 0;
  border-right: 1px solid rgba(184,151,46,0.15);
}
.hero-stats > div:last-child { border-right: 0; }
.hero-stats strong {
  display: block;
  font-family: 'DM Sans', sans-serif;
  font-size: clamp(28px, 3.6vw, 42px);
  font-weight: 700;
  color: var(--gold-2);
  letter-spacing: -0.02em;
}
.hero-stats strong .unit { font-size: 0.55em; vertical-align: 0.4em; margin-left: 2px; color: var(--gold); }
.hero-stats span {
  display: block;
  font-size: 13px; line-height: 1.45;
  color: rgba(248, 246, 241, 0.85);
  margin-top: 6px;
}
.hero-stats span i {
  display: block;
  font-style: normal;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px; letter-spacing: 0.04em;
  color: rgba(229, 196, 107, 0.6);
  margin-top: 4px;
}
@media (max-width: 880px) {
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .hero-stats > div { border-right: 0; border-bottom: 1px solid rgba(184,151,46,0.15); }
}

.hero-cta {
  display: flex; gap: 14px; flex-wrap: wrap;
  margin-bottom: 56px;
}
.hero-cta .btn-primary {
  background: var(--gold); color: var(--navy); border-color: var(--gold);
}
.hero-cta .btn-primary:hover { background: var(--gold-2); }
.hero-cta .btn-ghost {
  background: transparent; color: var(--paper);
  border-color: rgba(184,151,46,0.5);
}
.hero-cta .btn-ghost:hover { background: rgba(184,151,46,0.12); border-color: var(--gold-2); }

.hero-tagstrip {
  display: flex; flex-wrap: wrap; gap: 8px 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: rgba(229,196,107, 0.65);
}
.hero-tagstrip span {
  border: 1px solid rgba(184,151,46,0.25);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}

.hero-figure {
  position: absolute;
  right: -100px; top: -10%;
  width: 720px; max-width: 90vw;
  opacity: 0.55;
  pointer-events: none;
  z-index: 1;
}
.hero-figure .compass {
  animation: rotate 240s linear infinite;
  transform-origin: 50% 50%;
}
@keyframes rotate { to { transform: rotate(360deg); } }
@media (max-width: 1080px) { .hero-figure { opacity: 0.18; } }

/* =================================================================
WHAT
================================================================= */
.what { background: var(--paper); }
.what .lede strong { color: var(--navy); }
.what-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 16px;
  margin-top: 18px;
}
.what-card {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--paper);
  transition: border-color 150ms, transform 150ms;
}
.what-card:hover { border-color: var(--navy); transform: translateY(-2px); }
.what-card h3 {
  font-size: 17px; font-weight: 700; color: var(--navy);
  margin: 0 0 8px;
  letter-spacing: -0.005em;
}
.what-card p { margin: 0; color: var(--ink-2); font-size: 14.5px; line-height: 1.55; }
.what-card code {
  font-size: 12.5px;
  background: var(--ink); color: var(--gold-2);
  padding: 2px 6px; border-radius: 3px;
}

/* =================================================================
DOCTRINE
================================================================= */
.doctrine {
  background: linear-gradient(180deg, var(--paper) 0%, var(--paper-2) 100%);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.principles {
  list-style: none; padding: 0; margin: 0 0 40px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--paper);
}
.principle {
  position: relative;
  padding: 32px 28px 30px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  transition: background 150ms;
}
.principle:hover { background: #FBF9F4; }
.principle-num {
  display: block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.12em;
  color: var(--gold);
  margin-bottom: 16px;
  font-weight: 600;
}
.principle h3 {
  margin: 0 0 10px;
  font-size: 22px; font-weight: 700; color: var(--navy);
  letter-spacing: -0.01em;
  line-height: 1.18;
}
.principle p { margin: 0; color: var(--ink-2); font-size: 15px; }
.principle p strong { color: var(--navy); }
.principle p em { font-style: normal; font-family: 'JetBrains Mono', monospace; font-size: 13.5px; }

.tiebreaker {
  display: flex; gap: 18px; align-items: center; flex-wrap: wrap;
  padding: 18px 22px;
  border: 1px solid var(--navy);
  border-radius: var(--radius);
  background: var(--navy);
  color: var(--paper);
}
.tiebreaker-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.16em;
  color: var(--gold-2);
  text-transform: uppercase;
}
.tiebreaker-chain {
  display: flex; gap: 12px; flex-wrap: wrap; align-items: center;
  font-size: 14.5px;
  color: var(--paper);
}
.tiebreaker-chain span:nth-child(odd) { font-weight: 600; }
.tiebreaker-chain span:nth-child(even) {
  color: var(--gold-2);
  font-family: 'JetBrains Mono', monospace;
}

/* =================================================================
ARCHITECTURE
================================================================= */
.architecture { background: var(--paper); }

/* Layered stack */
.layer-diagram {
  margin: 0 0 56px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
}
.layer {
  display: grid;
  grid-template-columns: 240px 1fr;
  align-items: center;
  gap: 22px;
  padding: 18px 22px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  transition: transform 150ms, background 150ms;
}
.layer:last-child { border-bottom: 0; }
.layer:hover { transform: translateX(4px); background: var(--paper-2); }
.layer-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px; letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--navy);
}
.layer-body { color: var(--ink-2); }
.layer-pres   { background: linear-gradient(90deg, #fffefb 0%, #FBF6E6 100%); }
.layer-exp    { background: #FCFAF4; }
.layer-domain { background: #F8F4E5; }
.layer-engines{ background: #F5EFD8; }
.layer-core   { background: var(--navy); color: var(--paper); }
.layer-core .layer-tag { color: var(--gold-2); }
.layer-core .layer-body { color: rgba(248,246,241, 0.85); }
.layer-fabric { background: #1F2435; color: var(--paper); }
.layer-fabric .layer-tag { color: var(--gold-2); }
.layer-fabric .layer-body { color: rgba(248,246,241, 0.85); }
.layer-infra  { background: #0B0F1A; color: var(--paper); }
.layer-infra .layer-tag { color: var(--gold-2); }
.layer-infra .layer-body { color: rgba(248,246,241, 0.85); }

@media (max-width: 720px) {
  .layer { grid-template-columns: 1fr; gap: 4px; }
}

/* Module taxonomy */
.module-board { margin: 0 0 56px; }
.taxonomy-h {
  display: flex; align-items: baseline; flex-wrap: wrap; gap: 14px;
  font-size: 13px;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--navy);
  margin: 38px 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}
.taxonomy-sub {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: none;
}
.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 10px;
}
.mod {
  position: relative;
  padding: 16px 16px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  transition: transform 150ms, border-color 150ms, box-shadow 150ms;
  min-height: 130px;
  display: flex; flex-direction: column;
  gap: 6px;
}
.mod:hover {
  transform: translateY(-3px);
  border-color: var(--navy);
  box-shadow: 0 8px 24px -10px rgba(10,36,99,0.25);
}
.mod-id {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--gold);
}
.mod h4 {
  margin: 0;
  font-size: 14.5px;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: -0.005em;
  line-height: 1.25;
}
.mod p {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.45;
  color: var(--ink-2);
}
/* Spine = navy filled */
.module-grid-spine .mod {
  background: var(--navy); color: var(--paper);
  border-color: var(--navy);
}
.module-grid-spine .mod h4 { color: var(--paper); }
.module-grid-spine .mod p { color: rgba(248,246,241,0.78); }
.module-grid-spine .mod-id { color: var(--gold-2); }
.module-grid-spine .mod:hover {
  border-color: var(--gold);
  box-shadow: 0 12px 30px -12px rgba(184,151,46,0.5);
}

/* ATC color-coding */
.mod-op     { border-left: 3px solid var(--ok); }
.mod-ansp   { border-left: 3px solid var(--warn); }
.mod-shared { border-left: 3px solid var(--gold); }
.mod-iq     { border-left: 3px solid var(--navy); background: var(--paper-2); }

/* Rules strip */
.rules-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 18px;
  margin: 0 0 48px;
}
.rules-block {
  padding: 28px 28px 24px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}
.rules-block h3 {
  margin: 0 0 16px;
  font-size: 15px;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--navy);
  font-weight: 700;
}
.numbered {
  list-style: none;
  counter-reset: n;
  padding: 0; margin: 0;
}
.numbered li {
  counter-increment: n;
  position: relative;
  padding: 10px 0 10px 36px;
  border-top: 1px dashed var(--line-2);
  font-size: 14.5px;
  color: var(--ink-2);
}
.numbered li:first-child { border-top: 0; }
.numbered li::before {
  content: counter(n, decimal-leading-zero);
  position: absolute; left: 0; top: 11px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.06em;
}
.numbered li strong { color: var(--navy); }

/* API example */
.api-example {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--paper);
}
.api-example > header {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 22px;
  border-bottom: 1px solid #2a3149;
  background: #1F2435;
}
.api-method {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px; font-weight: 700;
  background: var(--gold); color: var(--navy);
  padding: 3px 8px;
  border-radius: 3px;
  letter-spacing: 0.08em;
}
.api-example > header code {
  font-size: 13px;
  color: var(--gold-2);
}
.api-tag {
  margin-left: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; color: rgba(229,196,107,0.7);
}
.api-example pre {
  margin: 0; padding: 22px 26px;
  overflow-x: auto;
  font-size: 12.5px;
  line-height: 1.65;
}
.api-example pre code { color: var(--paper); }
.t-meta { color: rgba(229,196,107,0.7); }
.t-val  { color: var(--gold-2); }
.t-key  { color: #82B5FF; }
.t-str  { color: var(--ok); }
.api-example > footer {
  padding: 14px 22px;
  border-top: 1px solid #2a3149;
  background: #14182a;
  font-size: 13px;
  color: rgba(248,246,241,0.7);
}
.api-example > footer code {
  background: rgba(184,151,46,0.14);
  padding: 1px 6px; border-radius: 3px;
  color: var(--gold-2);
  font-size: 12px;
}

/* =================================================================
SUBSTRATE
================================================================= */
.substrate {
  background: linear-gradient(180deg, var(--paper-2) 0%, var(--paper) 100%);
  border-top: 1px solid var(--line);
}
.tabs {
  display: flex; flex-wrap: wrap; gap: 4px;
  background: var(--paper);
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  margin-bottom: 24px;
  overflow-x: auto;
}
.tabs button {
  flex: 1 1 0; min-width: 110px;
  padding: 12px 16px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px; font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--ink-2);
  background: transparent;
  border: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  white-space: nowrap;
  transition: background 120ms, color 120ms;
}
.tabs button:hover { background: var(--paper-2); }
.tabs button[aria-selected="true"] {
  background: var(--navy); color: var(--paper);
}
.tabpanel { display: block; animation: fadein 200ms ease-out; }
.tabpanel[hidden] { display: none; }
@keyframes fadein { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.panel-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  align-items: start;
}
@media (max-width: 880px) { .panel-grid { grid-template-columns: 1fr; } }

.panel-text h3 {
  margin: 0 0 6px;
  font-size: 28px; font-weight: 700; color: var(--navy);
  letter-spacing: -0.01em;
}
.panel-spec {
  margin: 0 0 18px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px; letter-spacing: 0.06em;
  color: var(--gold);
}
.panel-text p { color: var(--ink-2); }
.panel-list {
  list-style: none; padding: 0; margin: 18px 0 0;
}
.panel-list li {
  padding: 9px 0 9px 22px;
  position: relative;
  border-top: 1px dashed var(--line-2);
  font-size: 14px;
  color: var(--ink-2);
}
.panel-list li:first-child { border-top: 0; }
.panel-list li::before {
  content: "→";
  position: absolute; left: 0;
  color: var(--gold);
  font-weight: 700;
}
.panel-list li code {
  font-size: 12.5px;
  background: var(--paper-2); padding: 1px 5px; border-radius: 3px;
}
.panel-list li strong { color: var(--navy); }

.panel-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.panel-table th, .panel-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}
.panel-table th {
  background: var(--navy); color: var(--paper);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase;
}
.panel-table tbody tr:last-child td { border-bottom: 0; }
.panel-table tbody tr:hover { background: var(--paper-2); }
.panel-table strong { color: var(--navy); font-family: 'JetBrains Mono', monospace; }

/* Quantity card */
.quantity-card, .diaspora-card, .timeline-card, .gate-card {
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--paper);
  overflow: hidden;
}
.quantity-card > header,
.diaspora-card > header,
.timeline-card > header,
.gate-card > header {
  padding: 12px 18px;
  background: var(--ink);
  color: var(--paper);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px; letter-spacing: 0.06em;
}
.quantity-card > header code,
.diaspora-card > header code,
.timeline-card > header code,
.gate-card > header code {
  color: var(--gold-2);
}
.quantity-card pre {
  margin: 0; padding: 22px 24px;
  background: #14182a; color: var(--paper);
  font-size: 13px; line-height: 1.7;
  overflow-x: auto;
}
.quantity-card > footer, .gate-card > footer, .timeline-card > footer {
  padding: 12px 18px;
  background: var(--paper-2);
  border-top: 1px solid var(--line);
  font-size: 13px; color: var(--ink-2);
}

/* Diaspora */
.diaspora-list {
  list-style: none; padding: 0; margin: 0;
}
.diaspora-list li {
  display: grid;
  grid-template-columns: 40px 1fr 90px;
  gap: 12px;
  padding: 11px 18px;
  border-bottom: 1px solid var(--line);
  align-items: center;
  font-size: 14px;
}
.diaspora-list li:last-child { border-bottom: 0; }
.d-rank {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700; color: var(--gold);
  font-size: 13px;
}
.d-place { color: var(--ink); font-weight: 500; }
.d-icao {
  text-align: right;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  background: var(--paper-2); color: var(--navy);
  padding: 2px 8px; border-radius: 3px;
  font-weight: 600;
  justify-self: end;
}

/* Fleet */
.fleet-cards {
  display: grid; gap: 8px;
  padding: 18px;
  background: var(--paper); border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}
.fleet-card {
  display: grid;
  grid-template-columns: 64px 1fr 64px;
  gap: 12px; align-items: center;
  padding: 8px 12px;
  background: var(--paper-2);
  border-radius: var(--radius);
}
.fleet-icao {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px; font-weight: 700;
  color: var(--navy);
}
.fleet-bar {
  height: 10px;
  background: rgba(10,36,99,0.08);
  border-radius: 5px; overflow: hidden;
}
.fleet-bar span {
  display: block; height: 100%;
  width: var(--w);
  background: linear-gradient(90deg, var(--gold-3), var(--gold), var(--gold-2));
  animation: bargrow 1.2s ease-out;
}
@keyframes bargrow { from { width: 0; } to { width: var(--w); } }
.fleet-n {
  text-align: right;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px; font-weight: 600; color: var(--navy);
}

/* Timeline / gate */
.timeline-list {
  list-style: none; padding: 0; margin: 0;
}
.timeline-list li {
  padding: 11px 18px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  color: var(--ink-2);
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 12px;
  align-items: baseline;
}
.timeline-list li:last-child { border-bottom: 0; }
.timeline-list li strong {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px; font-weight: 700;
  color: var(--gold);
}

/* Gate */
.gate-row {
  padding: 18px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 720px) { .gate-row { grid-template-columns: 1fr; } }
.gate {
  display: grid;
  grid-template-columns: 60px 1fr auto;
  gap: 14px; align-items: center;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper-2);
}
.gate-num {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  background: var(--ok); color: var(--paper);
  border-radius: 50%;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700; font-size: 18px;
}
.gate h4 { margin: 0 0 4px; color: var(--navy); font-size: 15px; }
.gate p { margin: 0; font-size: 13px; color: var(--ink-2); line-height: 1.45; }
.gate-status {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; font-weight: 700;
  background: var(--ok); color: var(--paper);
  padding: 5px 10px; border-radius: 3px;
  letter-spacing: 0.08em;
}

/* =================================================================
CREW
================================================================= */
.crew {
  background: var(--paper);
  border-top: 1px solid var(--line);
}
.layers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 0 0 32px;
}
@media (max-width: 880px) { .layers { grid-template-columns: 1fr; } }
.layer3 {
  padding: 26px 24px 22px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--paper);
}
.layer3 header {
  display: flex; align-items: baseline; gap: 12px;
  margin-bottom: 12px;
}
.layer3-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.1em;
  background: var(--navy); color: var(--paper);
  padding: 4px 8px;
  border-radius: 3px;
  text-transform: uppercase;
}
.layer3 h3 {
  margin: 0; font-size: 17px; color: var(--navy);
  letter-spacing: -0.005em;
}
.layer3 p { font-size: 14px; color: var(--ink-2); margin: 0 0 12px; }
.layer3-list {
  list-style: none; padding: 0; margin: 0;
  font-size: 13px;
  color: var(--ink-2);
}
.layer3-list li {
  padding: 6px 0; border-top: 1px dashed var(--line-2);
}
.layer3-list li:first-child { border-top: 0; }
.layer-l1 { background: linear-gradient(180deg, #FBF6E6 0%, var(--paper) 100%); }
.layer-l2 { background: linear-gradient(180deg, #F5EFD8 0%, var(--paper) 100%); }
.layer-l3 { background: linear-gradient(180deg, #EFE7BE 0%, var(--paper) 100%); }
.layer-l1 .layer3-tag { background: var(--gold); color: var(--navy); }
.layer-l2 .layer3-tag { background: var(--gold-3); color: var(--paper); }
.layer-l3 .layer3-tag { background: var(--navy); color: var(--gold-2); }

.rule-evaluator {
  margin: 0 0 36px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--paper);
}
.rule-evaluator header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 22px;
  background: var(--ink);
  color: var(--paper);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px; letter-spacing: 0.08em;
}
.status-pass {
  background: var(--ok); color: var(--paper);
  padding: 5px 10px; border-radius: 3px;
  font-size: 11px; letter-spacing: 0.1em; font-weight: 700;
}
.rule-rows { padding: 14px 22px; }
.rule-row {
  display: grid;
  grid-template-columns: 80px 1fr 50px;
  gap: 16px;
  padding: 11px 0;
  border-top: 1px dashed var(--line-2);
  align-items: center;
  font-size: 13.5px;
}
.rule-row:first-child { border-top: 0; }
.rr-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.06em;
}
.rule-row code {
  font-size: 12.5px;
  color: var(--ink-2);
}
.rr-ok {
  color: var(--ok); font-weight: 700;
  font-family: 'JetBrains Mono', monospace;
  text-align: right;
  font-size: 12px;
}
.rr-na {
  color: var(--muted);
  font-family: 'JetBrains Mono', monospace;
  text-align: right;
}
.rule-evaluator footer {
  padding: 14px 22px;
  background: var(--paper-2);
  border-top: 1px solid var(--line);
  font-size: 13px; color: var(--ink-2);
}
.rule-evaluator footer code {
  font-size: 12px;
  background: var(--ink); color: var(--gold-2);
  padding: 1px 5px; border-radius: 3px;
}

.crew-diff h3 {
  font-size: 17px;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--navy);
  margin: 0 0 16px;
}

/* =================================================================
REGULATORY
================================================================= */
.regulatory {
  background: linear-gradient(180deg, var(--paper) 0%, var(--paper-2) 100%);
  border-top: 1px solid var(--line);
}
.engines {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 0 0 32px;
}
@media (max-width: 880px) { .engines { grid-template-columns: 1fr; } }
.engine {
  padding: 28px 26px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--paper);
  transition: transform 150ms, box-shadow 150ms;
  display: flex; flex-direction: column; gap: 12px;
}
.engine:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px -16px rgba(10,36,99,0.3);
}
.engine header { display: flex; flex-direction: column; gap: 6px; }
.engine header span {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.1em;
  color: var(--gold);
  text-transform: uppercase;
}
.engine h3 {
  margin: 0; font-size: 22px; color: var(--navy);
  letter-spacing: -0.01em;
}
.engine p { margin: 0; font-size: 14px; color: var(--ink-2); }
.engine-why {
  font-style: italic;
  border-left: 3px solid var(--gold);
  padding-left: 12px;
  color: var(--ink) !important;
}
.engine-why em { font-style: normal; font-weight: 600; }
.engine-meta {
  list-style: none; padding: 0; margin-top: auto;
  display: flex; gap: 12px; flex-wrap: wrap;
  border-top: 1px solid var(--line);
  padding-top: 12px;
}
.engine-meta li {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; color: var(--muted);
  letter-spacing: 0.04em;
}
.engine-recommended {
  background: var(--navy); color: var(--paper);
  border-color: var(--navy);
}
.engine-recommended h3 { color: var(--paper); }
.engine-recommended p { color: rgba(248,246,241,0.85); }
.engine-recommended .engine-why {
  border-left-color: var(--gold-2);
  color: var(--gold-2) !important;
}
.engine-recommended .engine-meta { border-top-color: rgba(184,151,46,0.3); }
.engine-recommended .engine-meta li { color: rgba(229,196,107,0.7); }
.engine-recommended header span { color: var(--gold-2); }

.engines-rec {
  font-size: 16px; color: var(--ink-2);
  border-top: 1px solid var(--line);
  padding-top: 24px;
}
.engines-rec strong { color: var(--navy); }

/* =================================================================
FUNDING
================================================================= */
.funding { background: var(--paper); }
.programme-table {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: auto;
}
.programme-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 720px;
}
.programme-table th, .programme-table td {
  padding: 13px 18px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
.programme-table th {
  background: var(--navy); color: var(--paper);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase;
}
.programme-table tbody tr:hover { background: var(--paper-2); }
.programme-table tbody tr:last-child td { border-bottom: 0; }
.badge-ok, .badge-warn {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; font-weight: 700;
  padding: 3px 8px;
  border-radius: 3px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}
.badge-ok   { background: rgba(0,200,83,0.12); color: #00772E; }
.badge-warn { background: rgba(255,179,0,0.18); color: #8A5B00; }

/* =================================================================
BUILD
================================================================= */
.build {
  background: linear-gradient(180deg, var(--paper-2) 0%, var(--paper) 100%);
  border-top: 1px solid var(--line);
}
.phases {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
  margin: 0 0 36px;
}
.phase {
  padding: 24px 22px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  display: flex; flex-direction: column; gap: 10px;
  position: relative;
  overflow: hidden;
  transition: border-color 150ms, transform 150ms;
}
.phase:hover { border-color: var(--navy); transform: translateY(-2px); }
.phase::before {
  content: "";
  position: absolute; left: 0; top: 0;
  width: 3px; height: 100%;
  background: var(--gold);
}
.phase:nth-child(2)::before { background: var(--gold-2); }
.phase:nth-child(3)::before { background: var(--gold-3); }
.phase:nth-child(4)::before { background: var(--navy); }
.phase:nth-child(5)::before { background: var(--ink-2); }
.phase:nth-child(6)::before { background: var(--ok); }
.phase-head {
  display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.06em;
}
.phase-num {
  display: grid; place-items: center;
  width: 26px; height: 26px;
  background: var(--navy); color: var(--gold-2);
  border-radius: 50%;
  font-weight: 700; font-size: 12px;
}
.phase-window { color: var(--muted); }
.phase-cost {
  margin-left: auto;
  color: var(--gold);
  font-weight: 700;
}
.phase h3 {
  margin: 0; font-size: 18px; color: var(--navy);
  letter-spacing: -0.005em;
}
.phase p { margin: 0; font-size: 14px; color: var(--ink-2); }
.phase-why {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px dashed var(--line-2);
  font-style: italic;
  font-size: 13px; color: var(--muted);
}

.kc {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin: 0 0 36px;
}
@media (max-width: 720px) { .kc { grid-template-columns: 1fr; } }
.kc article {
  padding: 26px 24px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}
.kc article h3 {
  margin: 0 0 14px;
  font-size: 15px;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--navy);
  font-weight: 700;
}
.kc article ul {
  list-style: none; padding: 0; margin: 0;
}
.kc article li {
  padding: 9px 0 9px 22px;
  border-top: 1px dashed var(--line-2);
  position: relative;
  font-size: 14px; color: var(--ink-2);
}
.kc article li:first-child { border-top: 0; }
.kc article li::before {
  content: "•";
  position: absolute; left: 0;
  color: var(--gold);
}
.kc article strong { color: var(--navy); }

.adversarial {
  padding: 28px 28px 22px;
  background: var(--ink); color: var(--paper);
  border-radius: var(--radius-lg);
}
.adversarial h3 {
  margin: 0 0 14px;
  font-size: 14px;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold-2);
}
.adversarial-list {
  list-style: none; padding: 0; margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 4px 18px;
}
.adversarial-list li {
  padding: 10px 0 10px 28px;
  position: relative;
  font-size: 14px;
  color: rgba(248,246,241, 0.8);
  border-top: 1px solid #1f2435;
}
.adversarial-list li::before {
  content: "✕";
  position: absolute; left: 0; top: 9px;
  color: var(--err);
  font-weight: 700;
}

/* =================================================================
SOURCE ARTEFACTS
================================================================= */
.source { background: var(--paper); border-top: 1px solid var(--line); }
.artefacts {
  list-style: none; padding: 0; margin: 0 0 40px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(420px, 1fr));
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--paper);
}
.artefacts li {
  display: grid;
  grid-template-columns: 50px 1fr 200px;
  gap: 10px; align-items: baseline;
  padding: 14px 22px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  background: var(--paper);
  transition: background 120ms;
}
.artefacts li:hover { background: var(--paper-2); }
.art-num {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700; color: var(--gold);
  font-size: 12px;
}
.art-title { color: var(--ink); font-weight: 500; }
.art-id {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px; letter-spacing: 0.04em;
  color: var(--muted);
  text-align: right;
  word-break: break-word;
}

.loop {
  padding: 26px 28px;
  background: var(--navy); color: var(--paper);
  border-radius: var(--radius-lg);
  font-size: 15px;
  line-height: 1.65;
}
.loop-tag {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.12em;
  color: var(--gold-2);
  text-transform: uppercase;
  margin-right: 12px;
  padding: 3px 8px;
  border: 1px solid rgba(184,151,46,0.4);
  border-radius: 3px;
}

/* =================================================================
FOOTER
================================================================= */
.footer {
  background: var(--ink); color: var(--paper);
  padding: 64px 0 28px;
  border-top: 4px solid var(--gold);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  gap: 28px;
  margin-bottom: 36px;
}
@media (max-width: 880px) { .footer-grid { grid-template-columns: repeat(2, 1fr); } }
.footer .brand-mark {
  background: var(--paper);
}
.footer .brand-mark::before { color: var(--navy); }
.footer .brand-word { color: var(--paper); margin-left: 8px; }
.footer-tag {
  margin: 12px 0 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: rgba(229,196,107,0.7);
  letter-spacing: 0.06em;
}
.footer h4 {
  margin: 0 0 14px;
  font-size: 12px;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold-2);
}
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer ul li {
  padding: 5px 0;
  font-size: 14px;
  color: rgba(248,246,241,0.7);
}
.footer ul li a {
  color: rgba(248,246,241,0.85);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 120ms;
}
.footer ul li a:hover { border-bottom-color: var(--gold); color: var(--paper); }
.footer-fine {
  border-top: 1px solid #1f2435;
  padding-top: 22px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px; letter-spacing: 0.1em;
  color: rgba(229,196,107,0.55);
  text-transform: uppercase;
}

/* =================================================================
Reveal-on-scroll (set by JS)
================================================================= */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 600ms ease-out, transform 600ms ease-out;
}
.reveal.in {
  opacity: 1;
  transform: none;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  html { scroll-behavior: auto; }
}