:root {
  --bg: #09090b;
  --bg-elevated: #0d1117;
  --surface: rgba(24, 24, 27, 0.92);
  --surface-strong: rgba(39, 39, 42, 0.94);
  --surface-soft: rgba(24, 24, 27, 0.74);
  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(255, 255, 255, 0.22);
  --text: #f4f4f5;
  --muted: #a1a1aa;
  --muted-strong: #d4d4d8;
  --blue: #3b82f6;
  --green: #22c55e;
  --amber: #f59e0b;
  --red: #ef4444;
  --radius: 8px;
  --shadow: 0 26px 80px rgba(0, 0, 0, 0.42);
  --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.24);
  --max-width: 1380px;
  --transition: 180ms ease;
  --page-accent: var(--blue);
  --page-accent-soft: rgba(59, 130, 246, 0.18);
  --page-glow: rgba(59, 130, 246, 0.12);
}

body[data-page="mechanism"] {
  --page-accent: #38bdf8;
  --page-accent-soft: rgba(56, 189, 248, 0.18);
  --page-glow: rgba(56, 189, 248, 0.16);
}

body[data-page="evidence"] {
  --page-accent: var(--green);
  --page-accent-soft: rgba(34, 197, 94, 0.18);
  --page-glow: rgba(34, 197, 94, 0.15);
}

body[data-page="strategy"] {
  --page-accent: var(--amber);
  --page-accent-soft: rgba(245, 158, 11, 0.18);
  --page-glow: rgba(245, 158, 11, 0.15);
}

body[data-page="reference"] {
  --page-accent: #94a3b8;
  --page-accent-soft: rgba(148, 163, 184, 0.18);
  --page-glow: rgba(148, 163, 184, 0.16);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 14% 0%, var(--page-glow), transparent 32%),
    radial-gradient(circle at 86% 8%, rgba(34, 197, 94, 0.06), transparent 22%),
    linear-gradient(180deg, rgba(15, 23, 42, 0.16), transparent 18%),
    var(--bg);
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px);
  background-size: 100% 120px, 120px 100%;
  mask-image: linear-gradient(180deg, rgba(255, 255, 255, 0.75), transparent 94%);
  pointer-events: none;
  z-index: -1;
}

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

canvas {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

strong {
  color: #ffffff;
}

code,
mono,
pre,
.mono,
.card-kicker,
.section-index,
.page-code,
.status-label,
.signal-label,
.reference-meta,
.section-nav a,
.chip,
.table-code,
.stat-meta,
.tab-button,
.brand-meta,
.stack-stage,
.value-chip,
.sim-pattern-button,
.sim-preset-button,
.kpi-label,
.list-label,
.timeline-index,
.footnote,
.mode-bar-row span,
.company-grid a {
  font-family: "JetBrains Mono", "SFMono-Regular", monospace;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid var(--line);
  background: rgba(9, 9, 11, 0.82);
  backdrop-filter: blur(18px);
}

.topbar-shell {
  width: min(var(--max-width), calc(100vw - 2rem));
  margin: 0 auto;
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: grid;
  gap: 0.18rem;
  min-width: 0;
}

.brand-meta,
.page-code,
.eyebrow,
.card-kicker,
.section-index,
.status-label,
.list-label,
.reference-meta,
.kpi-label,
.stack-stage,
.note-title,
.legend-text,
.label {
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.74rem;
  color: var(--muted);
}

.brand-title {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.brand-signal {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.signal-dot,
.status-dot {
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 999px;
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.12);
  position: relative;
  flex-shrink: 0;
}

.signal-dot::after,
.status-dot::after {
  content: "";
  position: absolute;
  inset: -0.22rem;
  border-radius: inherit;
  border: 1px solid rgba(34, 197, 94, 0.34);
  animation: pulse 2.6s infinite;
}

@keyframes pulse {
  0% {
    opacity: 0.9;
    transform: scale(0.88);
  }
  100% {
    opacity: 0;
    transform: scale(1.8);
  }
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: flex-end;
}

.main-nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 0.72rem 0.95rem;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  color: var(--muted);
  transition: border-color var(--transition), background var(--transition), color var(--transition);
}

.main-nav a:hover,
.main-nav a:focus-visible,
.main-nav a[aria-current="page"] {
  color: var(--text);
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.05);
  outline: none;
}

.main-nav a[aria-current="page"] {
  box-shadow: inset 0 0 0 1px var(--page-accent-soft);
}

.page-shell {
  width: min(var(--max-width), calc(100vw - 2rem));
  margin: 0 auto;
  padding: 2rem 0 4.5rem;
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 1.4rem;
  align-items: start;
}

.page-sidebar {
  position: sticky;
  top: 6.25rem;
  display: grid;
  gap: 1rem;
}

.sidebar-card,
.page-panel,
.chapter-card,
.stat-card,
.signal-card,
.figure-card,
.spec-card,
.note,
.sim-network,
.sim-chart,
.sim-modes,
.table-wrap,
.roadmap-stack,
.roadmap-detail,
.fit-card,
.reference-card,
.quote-card,
.trinity-card,
.path-card,
.compare-card,
.metric-strip,
.fact-card,
.pill-card,
.sim-shell,
.figure-panel,
.audit-card,
.meta-card,
.chapter-pager {
  border: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(24, 24, 27, 0.96), rgba(17, 17, 20, 0.92));
  box-shadow: var(--shadow-soft);
}

.sidebar-card,
.page-panel,
.chapter-card,
.stat-card,
.signal-card,
.figure-card,
.spec-card,
.note,
.sim-network,
.sim-chart,
.sim-modes,
.table-wrap,
.roadmap-stack,
.roadmap-detail,
.fit-card,
.reference-card,
.quote-card,
.trinity-card,
.path-card,
.compare-card,
.metric-strip,
.fact-card,
.pill-card,
.sim-shell,
.figure-panel,
.audit-card,
.meta-card,
.chapter-pager {
  border-radius: var(--radius);
}

.sidebar-card,
.page-panel,
.reference-card,
.chapter-pager {
  padding: 1rem;
}

.section-nav {
  display: grid;
  gap: 0.45rem;
}

.section-nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  min-height: 42px;
  padding: 0.72rem 0.8rem;
  border: 1px solid transparent;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.015);
  transition: border-color var(--transition), background var(--transition), color var(--transition);
}

.section-nav a::after {
  content: attr(data-index);
  color: rgba(255, 255, 255, 0.32);
}

.section-nav a:hover,
.section-nav a:focus-visible,
.section-nav a.is-active {
  color: var(--text);
  border-color: var(--line-strong);
  background: linear-gradient(90deg, var(--page-accent-soft), rgba(255, 255, 255, 0.02));
  outline: none;
}

.sidebar-copy {
  margin: 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.sidebar-copy strong {
  color: var(--text);
}

.sidebar-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.75rem;
}

.sidebar-list li {
  display: grid;
  gap: 0.2rem;
}

.sidebar-list strong {
  font-size: 0.92rem;
}

.page-main {
  display: grid;
  gap: 1.25rem;
}

.page-panel {
  position: relative;
  overflow: hidden;
  scroll-margin-top: 6.4rem;
}

.page-panel::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--page-accent), transparent);
  opacity: 0.85;
}

.hero-panel {
  padding: 1.15rem;
}

.hero-grid,
.split-grid,
.detail-grid,
.kpi-grid,
.chapter-grid,
.signal-grid,
.figure-grid,
.stat-grid,
.flow-grid,
.compare-grid,
.path-grid,
.audit-grid,
.reference-grid,
.glossary-grid,
.strategy-grid,
.fit-grid,
.spec-grid,
.mini-grid,
.summary-grid {
  display: grid;
  gap: 1rem;
}

.hero-grid {
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  align-items: stretch;
}

.hero-copy {
  display: grid;
  gap: 1rem;
}

.page-code {
  color: var(--page-accent);
}

.display-title,
.section-title,
.card-title,
.hero-card-title,
.figure-panel h3,
.fit-card h3,
.audit-card h3,
.quote-card h3,
.reference-card h3,
.roadmap-panel h3 {
  margin: 0;
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 0.98;
}

.display-title {
  max-width: 11ch;
  font-size: clamp(2.7rem, 7vw, 5.4rem);
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.9rem);
  max-width: 13ch;
}

.lede,
.section-deck,
.card-copy,
.figure-caption,
.table-note,
.metric-text,
.quote-copy,
.glossary-card p,
.reference-list li,
.fit-card p,
.audit-card p,
.page-panel p,
.page-panel li,
.path-card p,
.chapter-card p,
.signal-card p,
.figure-panel p,
.spec-card p,
.roadmap-panel p,
.note p,
.meta-card p {
  color: var(--muted-strong);
}

.lede {
  margin: 0;
  font-size: clamp(1.08rem, 2vw, 1.26rem);
  max-width: 62ch;
}

.hero-actions,
.inline-actions,
.company-grid,
.resource-links,
.chapter-links,
.quick-links,
.tab-buttons,
.sim-patterns,
.sim-preset-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.button,
.link-button,
.company-grid a,
.resource-links a,
.chapter-links a,
.quick-links a {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.82rem 1rem;
  border: 1px solid var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
  transition: border-color var(--transition), background var(--transition), transform var(--transition), color var(--transition);
}

.button:hover,
.button:focus-visible,
.link-button:hover,
.link-button:focus-visible,
.company-grid a:hover,
.company-grid a:focus-visible,
.resource-links a:hover,
.resource-links a:focus-visible,
.chapter-links a:hover,
.chapter-links a:focus-visible,
.quick-links a:hover,
.quick-links a:focus-visible,
.tab-button:hover,
.tab-button:focus-visible,
.sim-pattern-button:hover,
.sim-pattern-button:focus-visible,
.sim-preset-button:hover,
.sim-preset-button:focus-visible {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.06);
  transform: translateY(-1px);
  outline: none;
}

.button-primary {
  background: #ffffff;
  color: #09090b;
  font-weight: 600;
  border-color: #ffffff;
}

.button-primary:hover,
.button-primary:focus-visible {
  background: #e4e4e7;
  color: #09090b;
}

.hero-card,
.trinity-card,
.quote-card,
.meta-card {
  padding: 1rem;
  display: grid;
  gap: 0.9rem;
}

.hero-card {
  align-content: start;
  background:
    linear-gradient(180deg, rgba(24, 24, 27, 0.96), rgba(17, 17, 20, 0.96)),
    linear-gradient(135deg, var(--page-accent-soft), transparent 62%);
}

.hero-card-title {
  font-size: 1.1rem;
}

.kpi-grid,
.stat-grid,
.mini-grid,
.summary-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.stat-grid.three,
.figure-grid,
.path-grid,
.strategy-grid,
.audit-grid,
.glossary-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.chapter-grid,
.signal-grid,
.spec-grid,
.fit-grid,
.compare-grid,
.flow-grid,
.reference-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.stat-card,
.chapter-card,
.signal-card,
.spec-card,
.audit-card,
.path-card,
.fact-card,
.pill-card,
.glossary-card {
  padding: 1rem;
  min-height: 100%;
}

.chapter-card,
.path-card {
  position: relative;
  overflow: hidden;
}

.chapter-card::after,
.path-card::after {
  content: "";
  position: absolute;
  inset: auto 1rem 0.95rem 1rem;
  height: 1px;
  background: linear-gradient(90deg, var(--page-accent), transparent);
  opacity: 0.45;
}

.card-title {
  font-size: 1.38rem;
}

.card-kicker {
  color: var(--page-accent);
}

.stat-value,
.metric-value,
.fit-score,
.sim-stat strong,
.big-number {
  font-size: clamp(1.45rem, 2vw, 2.15rem);
  line-height: 1;
  letter-spacing: -0.04em;
  color: #ffffff;
}

.stat-meta,
.metric-meta {
  color: var(--muted);
  font-size: 0.85rem;
}

.metric-strip {
  padding: 0.95rem 1rem;
}

.metric-strip p {
  margin: 0;
}

.list,
.compare-list,
.dense-list,
.reference-list,
.audit-list,
.meta-list,
.chapter-list {
  margin: 0;
  padding-left: 1.1rem;
}

.list li + li,
.compare-list li + li,
.dense-list li + li,
.reference-list li + li,
.audit-list li + li,
.meta-list li + li,
.chapter-list li + li {
  margin-top: 0.45rem;
}

.section-head {
  display: grid;
  gap: 0.7rem;
  margin-bottom: 1.2rem;
}

.section-index {
  color: var(--page-accent);
}

.figure-card,
.figure-panel,
.sim-network,
.sim-chart,
.sim-modes,
.roadmap-panel,
.fit-card {
  padding: 0.95rem;
}

.figure-frame,
.figure-card img,
.figure-panel img,
.art-frame img,
.hero-art img,
.roadmap-visual img {
  width: 100%;
  border-radius: 6px;
  background: #050608;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.figure-caption,
.caption,
.small-copy,
.table-note {
  margin: 0.75rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.note {
  padding: 1rem;
  border-color: rgba(255, 255, 255, 0.16);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(24, 24, 27, 0.96));
}

.note-title {
  color: var(--page-accent);
}

.tab-buttons {
  margin-bottom: 1rem;
}

.tab-button,
.sim-pattern-button,
.sim-preset-button,
.stack-button {
  appearance: none;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted-strong);
  padding: 0.8rem 0.9rem;
  cursor: pointer;
  transition: border-color var(--transition), background var(--transition), color var(--transition), transform var(--transition);
}

.tab-button.is-active,
.sim-pattern-button.is-active,
.sim-preset-button.is-active {
  border-color: rgba(255, 255, 255, 0.24);
  background: linear-gradient(90deg, var(--page-accent-soft), rgba(255, 255, 255, 0.02));
  color: #ffffff;
}

[data-tab-panel] {
  display: none;
}

[data-tab-panel].is-active {
  display: grid;
}

.figure-panel {
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.78fr);
  gap: 1rem;
  align-items: start;
}

.figure-panel-copy {
  display: grid;
  gap: 0.85rem;
}

.figure-panel-copy h3 {
  font-size: 1.45rem;
}

.split-grid.tight {
  grid-template-columns: 1.05fr 0.95fr;
}

.detail-grid {
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: start;
}

.equation-block,
.logic-block,
.code-block {
  padding: 0.9rem;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}

.equation-block pre,
.code-block pre {
  margin: 0;
  white-space: pre-wrap;
  color: #e5e7eb;
}

.flow-step {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 0.85rem;
  align-items: start;
  padding: 0.95rem;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}

.flow-index,
.timeline-index {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: var(--page-accent);
  background: rgba(255, 255, 255, 0.02);
}

.flow-step h3,
.audit-card h3,
.fit-card h3,
.glossary-card h3,
.spec-card h3,
.path-card h3,
.figure-card h3,
.reference-card h3,
.chapter-pager h3 {
  margin: 0;
  font-size: 1.18rem;
}

.roadmap-wrap {
  display: grid;
  gap: 1rem;
  grid-template-columns: 320px minmax(0, 1fr);
}

.roadmap-stack {
  display: grid;
  gap: 0.65rem;
  padding: 0.95rem;
}

.stack-button {
  display: grid;
  gap: 0.3rem;
  justify-items: start;
  text-align: left;
}

.stack-button.is-active {
  border-color: rgba(255, 255, 255, 0.24);
  background: linear-gradient(90deg, var(--page-accent-soft), rgba(255, 255, 255, 0.02));
}

.stack-button strong {
  font-size: 1rem;
}

.roadmap-panel {
  display: none;
  gap: 1rem;
}

.roadmap-panel.is-active {
  display: grid;
}

.roadmap-meta-grid,
.mini-metrics,
.meta-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.roadmap-meta-grid span,
.mini-metrics span,
.meta-grid span {
  display: block;
  color: var(--muted);
  font-size: 0.8rem;
}

.roadmap-meta-grid strong,
.mini-metrics strong,
.meta-grid strong {
  display: block;
  font-size: 0.96rem;
  color: #ffffff;
}

.company-grid a {
  color: var(--muted-strong);
}

.table-wrap {
  overflow-x: auto;
}

.data-table,
.reference-table {
  width: 100%;
  min-width: 720px;
  border-collapse: collapse;
}

.data-table th,
.data-table td,
.reference-table th,
.reference-table td {
  padding: 0.95rem 0.9rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  text-align: left;
  vertical-align: top;
}

.data-table th,
.reference-table th {
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 500;
}

.data-table td,
.reference-table td {
  color: var(--muted-strong);
  font-size: 0.94rem;
}

.score-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.28rem 0.52rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: #ffffff;
  background: rgba(255, 255, 255, 0.03);
}

.score-chip.high {
  border-color: rgba(34, 197, 94, 0.32);
  color: #bbf7d0;
}

.score-chip.med {
  border-color: rgba(245, 158, 11, 0.3);
  color: #fde68a;
}

.score-chip.low {
  border-color: rgba(239, 68, 68, 0.28);
  color: #fecaca;
}

.reference-list {
  padding-left: 1.3rem;
}

.reference-list li {
  color: var(--muted-strong);
}

.reference-list a {
  color: #bfdbfe;
}

.reference-list a:hover,
.resource-links a:hover,
.chapter-links a:hover,
.quick-links a:hover {
  text-decoration: underline;
}

.glossary-card {
  display: grid;
  gap: 0.55rem;
}

.quote-copy {
  font-size: 1.02rem;
}

.chapter-pager {
  display: grid;
  gap: 0.85rem;
  scroll-margin-top: 6.4rem;
}

.chapter-pager-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.chapter-pager-links a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 0.72rem 0.95rem;
  border: 1px solid var(--line);
  color: var(--text);
  background: rgba(255, 255, 255, 0.03);
}

.chapter-pager-links a:hover,
.chapter-pager-links a:focus-visible {
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.06);
  outline: none;
}

.sim-shell {
  padding: 1rem;
  display: grid;
  gap: 1rem;
}

.sim-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(300px, 360px) minmax(0, 1fr);
  align-items: start;
}

.sim-controls {
  display: grid;
  gap: 0.95rem;
}

.sim-control {
  display: grid;
  gap: 0.55rem;
  padding: 0.9rem;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}

.sim-control label,
.sim-control-title,
.sim-pattern-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  font-weight: 500;
}

.value-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.22rem 0.45rem;
  border: 1px solid rgba(255, 255, 255, 0.14);
  color: var(--muted-strong);
  background: rgba(255, 255, 255, 0.04);
}

input[type="range"] {
  width: 100%;
  accent-color: var(--page-accent);
}

.sim-help,
.sim-note,
.legend-inline,
.mode-bars,
.mode-bar-row,
.mode-bar-track {
  color: var(--muted);
  font-size: 0.88rem;
}

.sim-stat-grid {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.sim-stat {
  padding: 0.85rem;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}

.sim-stat span {
  display: block;
  color: var(--muted);
  font-size: 0.82rem;
  margin-bottom: 0.35rem;
}

.sim-note {
  margin: 0;
}

.sim-visuals {
  display: grid;
  gap: 1rem;
}

.sim-network-svg {
  width: 100%;
  height: auto;
}

.sim-edge {
  fill: none;
  stroke: rgba(255, 255, 255, 0.24);
  stroke-linecap: round;
}

.sim-node {
  fill: rgba(59, 130, 246, 0.18);
  stroke: var(--page-accent);
  stroke-width: 2;
}

.sim-node-ring {
  fill: none;
  stroke: rgba(59, 130, 246, 0.24);
  stroke-width: 1.4;
}

.sim-pump-arrow {
  fill: none;
  stroke: rgba(255, 255, 255, 0.72);
  stroke-width: 3;
  stroke-linecap: round;
}

.svg-text {
  fill: var(--muted);
  font-size: 16px;
  font-family: "JetBrains Mono", monospace;
}

.legend-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.75rem;
}

.legend-inline span {
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
}

.legend-swatch {
  width: 14px;
  height: 2px;
  display: inline-block;
}

.legend-a { background: #3b82f6; }
.legend-b { background: #22d3ee; }
.legend-c { background: #22c55e; }
.legend-total { background: #f59e0b; }

.mode-bars {
  display: grid;
  gap: 0.75rem;
}

.mode-bar-row {
  display: grid;
  gap: 0.4rem;
}

.mode-bar-track {
  width: 100%;
  height: 7px;
  background: rgba(255, 255, 255, 0.08);
}

.mode-bar-fill {
  width: 0;
  height: 100%;
  background: #3b82f6;
}

.mode-bar-fill-2 { background: #22d3ee; }
.mode-bar-fill-3 { background: #22c55e; }

.figure-pair {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.lightbox {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background: rgba(2, 6, 23, 0.88);
  z-index: 80;
}

.lightbox.is-open {
  display: flex;
}

.lightbox-shell {
  width: min(1100px, 100%);
  display: grid;
  gap: 0.8rem;
}

.lightbox-shell img {
  width: 100%;
  max-height: 82vh;
  object-fit: contain;
  background: #020617;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.lightbox-close {
  justify-self: end;
  min-width: 44px;
  min-height: 44px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.05);
  color: #ffffff;
  cursor: pointer;
}

.lightbox-caption {
  margin: 0;
  color: var(--muted-strong);
}

.footer-bar {
  width: min(var(--max-width), calc(100vw - 2rem));
  margin: 0 auto 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer-bar a {
  color: #bfdbfe;
}

@media (max-width: 1180px) {
  .page-shell {
    grid-template-columns: 1fr;
  }

  .page-sidebar {
    position: static;
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .hero-grid,
  .roadmap-wrap,
  .detail-grid,
  .split-grid.tight,
  .figure-panel,
  .sim-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .topbar-shell {
    padding: 0.9rem 0;
    align-items: start;
    flex-direction: column;
  }

  .main-nav {
    width: 100%;
    justify-content: flex-start;
  }

  .page-sidebar {
    grid-template-columns: 1fr;
  }

  .chapter-grid,
  .signal-grid,
  .figure-pair,
  .fit-grid,
  .compare-grid,
  .flow-grid,
  .reference-grid,
  .spec-grid,
  .hero-grid,
  .figure-grid,
  .strategy-grid,
  .audit-grid,
  .path-grid,
  .glossary-grid,
  .stat-grid.three,
  .kpi-grid,
  .mini-grid,
  .summary-grid,
  .roadmap-meta-grid,
  .mini-metrics,
  .meta-grid,
  .sim-stat-grid {
    grid-template-columns: 1fr;
  }

  .display-title {
    max-width: 100%;
  }

  .data-table,
  .reference-table {
    min-width: 640px;
  }
}

@media (max-width: 640px) {
  .page-shell,
  .topbar-shell,
  .footer-bar {
    width: min(var(--max-width), calc(100vw - 1.2rem));
  }

  .hero-panel,
  .page-panel,
  .sidebar-card,
  .chapter-card,
  .signal-card,
  .stat-card,
  .spec-card,
  .figure-card,
  .figure-panel,
  .audit-card,
  .note,
  .reference-card,
  .chapter-pager,
  .sim-shell,
  .sim-network,
  .sim-chart,
  .sim-modes,
  .fit-card,
  .roadmap-stack,
  .roadmap-detail {
    padding: 0.9rem;
  }

  .button,
  .button-primary,
  .main-nav a,
  .chapter-pager-links a,
  .company-grid a,
  .resource-links a,
  .chapter-links a,
  .quick-links a,
  .section-nav a {
    width: 100%;
    justify-content: space-between;
  }

  .hero-actions,
  .chapter-pager-links,
  .company-grid,
  .resource-links,
  .chapter-links,
  .quick-links,
  .tab-buttons,
  .sim-patterns,
  .sim-preset-buttons {
    display: grid;
    grid-template-columns: 1fr;
  }
}



/* Report-style tightening pass */
:root {
  --radius: 4px;
  --shadow: 0 12px 28px rgba(0, 0, 0, 0.24);
  --shadow-soft: 0 8px 18px rgba(0, 0, 0, 0.16);
  --max-width: 1280px;
  --page-accent-soft: rgba(59, 130, 246, 0.1);
  --page-glow: rgba(59, 130, 246, 0.05);
}

body[data-page="mechanism"] {
  --page-accent-soft: rgba(56, 189, 248, 0.1);
  --page-glow: rgba(56, 189, 248, 0.05);
}

body[data-page="evidence"] {
  --page-accent-soft: rgba(34, 197, 94, 0.1);
  --page-glow: rgba(34, 197, 94, 0.05);
}

body[data-page="strategy"] {
  --page-accent-soft: rgba(245, 158, 11, 0.1);
  --page-glow: rgba(245, 158, 11, 0.05);
}

body[data-page="reference"] {
  --page-accent-soft: rgba(148, 163, 184, 0.1);
  --page-glow: rgba(148, 163, 184, 0.05);
}

body {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.015), transparent 16%),
    radial-gradient(circle at 14% 0%, var(--page-glow), transparent 28%),
    var(--bg);
  font-size: 15px;
  line-height: 1.54;
}

.topbar {
  background: rgba(9, 9, 11, 0.92);
  backdrop-filter: blur(10px);
}

.topbar-shell {
  min-height: 68px;
}

.brand-meta,
.page-code,
.eyebrow,
.card-kicker,
.section-index,
.status-label,
.list-label,
.reference-meta,
.kpi-label,
.stack-stage,
.note-title,
.legend-text,
.label {
  font-size: 0.68rem;
}

.brand-title {
  font-size: 0.92rem;
  letter-spacing: -0.01em;
}

.brand-signal {
  font-size: 0.74rem;
}

.signal-dot,
.status-dot {
  width: 0.42rem;
  height: 0.42rem;
  box-shadow: none;
}

.signal-dot::after,
.status-dot::after {
  content: none;
}

.main-nav {
  gap: 0.35rem;
}

.main-nav a {
  min-height: 38px;
  padding: 0.56rem 0.72rem;
  font-size: 0.84rem;
}

.main-nav a[aria-current="page"] {
  box-shadow: none;
  border-color: rgba(255, 255, 255, 0.2);
}

.page-shell {
  padding: 1.2rem 0 3rem;
  gap: 1rem;
}

.page-sidebar {
  top: 5.35rem;
  gap: 0.75rem;
}

.sidebar-card,
.page-panel,
.chapter-card,
.stat-card,
.signal-card,
.figure-card,
.spec-card,
.note,
.sim-network,
.sim-chart,
.sim-modes,
.table-wrap,
.roadmap-stack,
.roadmap-detail,
.fit-card,
.reference-card,
.quote-card,
.trinity-card,
.path-card,
.compare-card,
.metric-strip,
.fact-card,
.pill-card,
.sim-shell,
.figure-panel,
.audit-card,
.meta-card,
.chapter-pager,
.flow-step,
.equation-block,
.logic-block,
.code-block {
  background: rgba(24, 24, 27, 0.94);
}

.sidebar-card,
.page-panel,
.reference-card,
.chapter-pager,
.hero-panel,
.hero-card,
.trinity-card,
.quote-card,
.meta-card,
.stat-card,
.chapter-card,
.signal-card,
.spec-card,
.audit-card,
.path-card,
.fact-card,
.pill-card,
.glossary-card,
.figure-card,
.figure-panel,
.sim-network,
.sim-chart,
.sim-modes,
.roadmap-panel,
.fit-card,
.note,
.flow-step {
  padding: 0.82rem;
}

.section-nav a {
  min-height: 38px;
  padding: 0.56rem 0.68rem;
}

.sidebar-copy,
.sidebar-list strong {
  font-size: 0.88rem;
}

.page-main {
  gap: 1rem;
}

.page-panel::before {
  height: 1px;
  opacity: 0.42;
}

.hero-grid {
  grid-template-columns: minmax(0, 1.12fr) minmax(300px, 0.88fr);
}

.hero-copy,
.hero-card,
.figure-panel-copy,
.summary-grid,
.section-head {
  gap: 0.65rem;
}

.display-title,
.section-title,
.card-title,
.hero-card-title,
.figure-panel h3,
.fit-card h3,
.audit-card h3,
.quote-card h3,
.reference-card h3,
.roadmap-panel h3 {
  line-height: 1.02;
}

.display-title {
  max-width: 12ch;
  font-size: clamp(2.05rem, 4.4vw, 3.45rem);
}

.section-title {
  max-width: 18ch;
  font-size: clamp(1.35rem, 2.7vw, 2.05rem);
}

.lede {
  font-size: clamp(0.98rem, 1.4vw, 1.06rem);
  max-width: 70ch;
}

.page-panel p,
.page-panel li,
.sidebar-copy,
.reference-list li,
.data-table td,
.reference-table td {
  font-size: 0.9rem;
}

.hero-actions,
.inline-actions,
.company-grid,
.resource-links,
.chapter-links,
.quick-links,
.tab-buttons,
.sim-patterns,
.sim-preset-buttons {
  gap: 0.5rem;
}

.button,
.link-button,
.company-grid a,
.resource-links a,
.chapter-links a,
.quick-links a {
  min-height: 38px;
  padding: 0.58rem 0.8rem;
  font-size: 0.86rem;
  transition: border-color var(--transition), background var(--transition), color var(--transition);
}

.button:hover,
.button:focus-visible,
.link-button:hover,
.link-button:focus-visible,
.company-grid a:hover,
.company-grid a:focus-visible,
.resource-links a:hover,
.resource-links a:focus-visible,
.chapter-links a:hover,
.chapter-links a:focus-visible,
.quick-links a:hover,
.quick-links a:focus-visible,
.tab-button:hover,
.tab-button:focus-visible,
.sim-pattern-button:hover,
.sim-pattern-button:focus-visible,
.sim-preset-button:hover,
.sim-preset-button:focus-visible {
  transform: none;
}

.button-primary {
  background: var(--page-accent-soft);
  color: var(--text);
  font-weight: 500;
  border-color: rgba(255, 255, 255, 0.18);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
}

.hero-card {
  background: rgba(24, 24, 27, 0.94);
}

.hero-card-title {
  font-size: 1rem;
}

.chapter-card::after,
.path-card::after {
  content: none;
}

.card-title {
  font-size: 1.12rem;
}

.stat-value,
.metric-value,
.fit-score,
.sim-stat strong,
.big-number {
  font-size: clamp(1.18rem, 1.5vw, 1.65rem);
}

.stat-meta,
.metric-meta,
.figure-caption,
.caption,
.small-copy,
.table-note {
  font-size: 0.8rem;
}

.metric-strip {
  padding: 0.72rem 0.8rem;
}

.section-head {
  margin-bottom: 0.9rem;
}

.tab-buttons {
  margin-bottom: 0.85rem;
}

.tab-button,
.sim-pattern-button,
.sim-preset-button,
.stack-button {
  padding: 0.6rem 0.72rem;
  font-size: 0.84rem;
  transition: border-color var(--transition), background var(--transition), color var(--transition);
}

.figure-panel {
  gap: 0.8rem;
}

.figure-panel-copy h3,
.flow-step h3,
.audit-card h3,
.fit-card h3,
.glossary-card h3,
.spec-card h3,
.path-card h3,
.figure-card h3,
.reference-card h3,
.chapter-pager h3 {
  font-size: 1rem;
}

.equation-block,
.logic-block,
.code-block {
  padding: 0.75rem;
}

.flow-step {
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 0.72rem;
}

.flow-index,
.timeline-index {
  width: 34px;
  height: 34px;
  font-size: 0.8rem;
}

.roadmap-wrap {
  gap: 0.85rem;
  grid-template-columns: 280px minmax(0, 1fr);
}

.roadmap-stack {
  gap: 0.55rem;
  padding: 0.8rem;
}

.stack-button strong {
  font-size: 0.92rem;
}

.roadmap-meta-grid span,
.mini-metrics span,
.meta-grid span {
  font-size: 0.74rem;
}

.roadmap-meta-grid strong,
.mini-metrics strong,
.meta-grid strong {
  font-size: 0.88rem;
}

.data-table th,
.data-table td,
.reference-table th,
.reference-table td {
  padding: 0.72rem;
}

.data-table th,
.reference-table th {
  font-size: 0.72rem;
}

.data-table td,
.reference-table td {
  font-size: 0.86rem;
}

.report-list,
.report-grid-3 {
  display: grid;
  gap: 0.65rem;
}

.report-grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.report-item {
  padding: 0.72rem 0.8rem;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}

.report-item h3,
.report-item h4 {
  margin: 0 0 0.35rem;
  font-size: 0.96rem;
}

.report-item p {
  margin: 0;
}

@media (max-width: 900px) {
  .report-grid-3 {
    grid-template-columns: 1fr;
  }
}

/* Technical-report restraint pass */
:root {
  --max-width: 1240px;
  --shadow: none;
  --shadow-soft: none;
}

.topbar {
  background: rgba(5, 6, 8, 0.96);
  backdrop-filter: blur(6px);
}

.topbar-shell {
  min-height: 60px;
  gap: 1rem;
}

.brand {
  gap: 0.22rem;
}

.brand-meta,
.page-code,
.eyebrow,
.card-kicker,
.section-index,
.status-label,
.list-label,
.reference-meta,
.kpi-label,
.stack-stage,
.note-title,
.legend-text,
.label {
  font-size: 0.64rem;
  letter-spacing: 0.16em;
}

.brand-title {
  font-size: 0.84rem;
  font-weight: 600;
}

.brand-signal {
  font-size: 0.7rem;
}

.main-nav {
  gap: 0.22rem;
}

.main-nav a {
  min-height: 34px;
  padding: 0.4rem 0.58rem;
  font-size: 0.72rem;
  font-family: "JetBrains Mono", monospace;
  letter-spacing: 0.03em;
  background: rgba(255, 255, 255, 0.01);
  border-color: rgba(255, 255, 255, 0.12);
}

.page-shell {
  width: min(var(--max-width), calc(100vw - 1.25rem));
  grid-template-columns: 216px minmax(0, 1fr);
  gap: 0.85rem;
  padding: 1rem 0 2.6rem;
}

.page-sidebar {
  top: 4.85rem;
  gap: 0.6rem;
  max-height: calc(100vh - 5.5rem);
  overflow: auto;
  padding-right: 0.08rem;
}

.sidebar-card,
.page-panel,
.chapter-card,
.stat-card,
.signal-card,
.figure-card,
.spec-card,
.note,
.sim-chart,
.sim-modes,
.table-wrap,
.roadmap-stack,
.roadmap-detail,
.fit-card,
.reference-card,
.quote-card,
.trinity-card,
.path-card,
.compare-card,
.metric-strip,
.fact-card,
.pill-card,
.sim-shell,
.figure-panel,
.audit-card,
.meta-card,
.chapter-pager,
.flow-step,
.sim-analysis {
  box-shadow: none;
  background: rgba(18, 18, 20, 0.96);
}

.sidebar-card,
.page-panel,
.reference-card,
.chapter-pager,
.hero-panel,
.hero-card,
.trinity-card,
.quote-card,
.meta-card,
.stat-card,
.chapter-card,
.signal-card,
.spec-card,
.audit-card,
.path-card,
.fact-card,
.pill-card,
.glossary-card,
.figure-card,
.figure-panel,
.sim-chart,
.sim-modes,
.roadmap-panel,
.fit-card,
.note,
.flow-step,
.sim-analysis {
  padding: 0.72rem;
}

.section-nav {
  gap: 0.35rem;
}

.section-nav a {
  min-height: 34px;
  padding: 0.46rem 0.54rem;
  font-size: 0.79rem;
}

.sidebar-copy,
.sidebar-list strong {
  font-size: 0.82rem;
  line-height: 1.6;
}

.page-main {
  gap: 0.85rem;
}

.page-panel::before {
  opacity: 0.24;
}

.hero-grid {
  grid-template-columns: minmax(0, 1.16fr) minmax(290px, 0.84fr);
  gap: 0.85rem;
}

.hero-copy,
.hero-card,
.figure-panel-copy,
.summary-grid,
.section-head {
  gap: 0.55rem;
}

.display-title {
  max-width: 13ch;
  font-size: clamp(1.72rem, 3.35vw, 2.68rem);
  font-weight: 600;
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.section-title {
  max-width: 20ch;
  font-size: clamp(1.12rem, 1.9vw, 1.56rem);
  font-weight: 600;
  line-height: 1.04;
}

.hero-card-title,
.card-title,
.figure-panel h3,
.fit-card h3,
.audit-card h3,
.quote-card h3,
.reference-card h3,
.roadmap-panel h3,
.figure-panel-copy h3,
.flow-step h3,
.glossary-card h3,
.spec-card h3,
.path-card h3,
.figure-card h3,
.chapter-pager h3,
.report-item h3,
.report-item h4 {
  font-size: 0.94rem;
  line-height: 1.2;
}

.lede {
  max-width: 64ch;
  font-size: clamp(0.9rem, 1.06vw, 0.97rem);
}

.page-panel p,
.page-panel li,
.sidebar-copy,
.reference-list li,
.data-table td,
.reference-table td,
.card-copy {
  font-size: 0.86rem;
  line-height: 1.62;
}

.button,
.link-button,
.company-grid a,
.resource-links a,
.chapter-links a,
.quick-links a,
.tab-button,
.sim-pattern-button,
.sim-preset-button,
.stack-button {
  min-height: 34px;
  padding: 0.48rem 0.62rem;
  font-size: 0.76rem;
  font-family: "JetBrains Mono", monospace;
  letter-spacing: 0.02em;
}

.stat-value,
.metric-value,
.fit-score,
.sim-stat strong,
.big-number {
  font-size: clamp(1.04rem, 1.3vw, 1.36rem);
}

.stat-meta,
.metric-meta,
.figure-caption,
.caption,
.small-copy,
.table-note {
  font-size: 0.76rem;
  line-height: 1.55;
}

.report-item,
.sim-stat,
.sim-control,
.sim-diagnostic {
  background: rgba(255, 255, 255, 0.018);
}

.sim-grid {
  grid-template-columns: minmax(280px, 320px) minmax(0, 1fr);
  gap: 0.85rem;
}

.sim-controls,
.sim-visuals {
  gap: 0.8rem;
}

.sim-control {
  gap: 0.5rem;
  padding: 0.78rem;
}

.sim-control label,
.sim-control-title,
.sim-pattern-label {
  font-size: 0.82rem;
}

.value-chip {
  padding: 0.18rem 0.42rem;
  font-size: 0.76rem;
  font-family: "JetBrains Mono", monospace;
}

.sim-help,
.sim-note,
.legend-inline,
.mode-bars,
.mode-bar-row,
.mode-bar-track {
  font-size: 0.8rem;
  line-height: 1.55;
}

.sim-stat {
  padding: 0.72rem;
}

.sim-stat span,
.sim-diagnostic span {
  display: block;
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-family: "JetBrains Mono", monospace;
}

.sim-analysis {
  border: 1px solid var(--line);
}

.sim-diagnostic-grid {
  display: grid;
  gap: 0.65rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 0.6rem;
}

.sim-diagnostic {
  display: grid;
  gap: 0.28rem;
  padding: 0.72rem;
  border: 1px solid var(--line);
}

.sim-diagnostic strong {
  font-size: 0.94rem;
  line-height: 1.2;
}

.sim-diagnostic p {
  margin: 0;
  font-size: 0.81rem;
  line-height: 1.55;
  color: var(--muted);
}

.sim-guidance {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
  margin-top: 0.7rem;
  padding-top: 0.7rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.sim-guidance p {
  margin: 0.2rem 0 0;
  font-size: 0.82rem;
  line-height: 1.6;
}

.sim-reading-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.sim-reading-list .report-item h3 {
  font-size: 0.84rem;
}

.sim-reading-list .report-item p {
  font-size: 0.82rem;
}

.legend-inline {
  gap: 0.75rem;
  margin-top: 0.55rem;
}

.mode-bar-track {
  height: 6px;
}

@media (max-width: 1100px) {
  .page-shell {
    grid-template-columns: 1fr;
  }

  .page-sidebar {
    position: static;
    max-height: none;
    overflow: visible;
  }

  .hero-grid,
  .sim-grid,
  .sim-guidance,
  .sim-reading-list,
  .sim-diagnostic-grid {
    grid-template-columns: 1fr;
  }
}

.card-kicker,
.page-code,
.section-index,
.brand-meta,
.brand-signal,
.section-nav a,
.section-nav a::after {
  font-family: "JetBrains Mono", monospace;
}

.hero-card {
  background: rgba(18, 18, 20, 0.96);
  box-shadow: none;
}