/* ==========================================================================
   TARMAC SYSTEMS — Flagship Editorial & Architectural Design System
   Anti-AI-Slop Strict Specification: Warm Archival Paper + Swiss 1px Grid
   ========================================================================== */

:root {
  /* Core Locked Color Tokens */
  --bg-canvas: #F6F5F0;
  --bg-surface: #EFECE6;
  --bg-elevated: #FAF9F6;
  --bg-terminal: #141413;

  --ink-primary: #141413;
  --ink-secondary: #52514E;
  --ink-muted: #85837E;

  --border-hairline: #DCD9D0;
  --border-strong: #C5C1B6;

  --accent-primary: #1B3B2B;
  --accent-primary-hover: #132A1E;
  --accent-primary-tint: #E5ECE8;

  --accent-signal: #B84A27;
  --accent-signal-hover: #993B1D;
  --accent-signal-tint: #F5E7E2;

  /* Warm Terminal Sub-palette (Zero Blue/Purple Shift) */
  --term-surface: #1C1C1A;
  --term-elevated: #232320;
  --term-border: #2E2D29;
  --term-ink: #ECEAE3;
  --term-muted: #9A978E;
  --term-dim: #66645D;
  --term-green: #4C9A73;
  --term-signal: #D4613B;

  /* Typography */
  --font-serif: 'Instrument Serif', 'Noto Serif SC', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Layout Rhythm */
  --container-max: 1320px;
  --header-h: 64px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 76px;
  background-color: var(--bg-canvas);
  color: var(--ink-primary);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-canvas);
  color: var(--ink-primary);
  overflow-x: hidden;
  position: relative;
}

/* Subtle Archival Paper Grain (Zero Glow / Zero Blur Orbs) */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.22;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.14'/%3E%3C/svg%3E");
}

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

button,
input,
select,
textarea {
  font-family: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  background: none;
  border: none;
}

ul,
ol {
  list-style: none;
}

/* Typography Utilities */
.display-title,
h1,
h2,
.founder-memo-title {
  font-family: var(--font-serif);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.08;
  color: var(--ink-primary);
}

html[lang="zh-CN"] .display-title,
html[lang="zh-CN"] h1,
html[lang="zh-CN"] h2,
html[lang="zh-CN"] .founder-memo-title {
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.mono,
code,
pre,
.tabular {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
  font-variant-numeric: tabular-nums;
}

.eyebrow-dot {
  width: 6px;
  height: 6px;
  background-color: var(--accent-primary);
  display: inline-block;
  flex-shrink: 0;
}

.eyebrow-dot.signal {
  background-color: var(--accent-signal);
}

/* ==========================================================================
   Swiss Architectural Grid & Fiducial Crosshair Markers (+)
   ========================================================================== */

.arch-band {
  width: 100%;
  border-bottom: 1px solid var(--border-hairline);
  position: relative;
}

.arch-container {
  max-width: var(--container-max);
  margin: 0 auto;
  border-left: 1px solid var(--border-hairline);
  border-right: 1px solid var(--border-hairline);
  position: relative;
}

/* Precision Fiducial Crosshair (+) */
.fiducial {
  position: absolute;
  width: 11px;
  height: 11px;
  pointer-events: none;
  z-index: 4;
}

.fiducial::before,
.fiducial::after {
  content: "";
  position: absolute;
  background-color: #9E9B91;
}

.fiducial::before {
  left: 5px;
  top: 0;
  width: 1px;
  height: 11px;
}

.fiducial::after {
  top: 5px;
  left: 0;
  width: 11px;
  height: 1px;
}

.fiducial.tl { top: -6px; left: -6px; }
.fiducial.tr { top: -6px; right: -6px; }
.fiducial.bl { bottom: -6px; left: -6px; }
.fiducial.br { bottom: -6px; right: -6px; }

/* Section Header Strip */
.section-index-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 32px;
  border-bottom: 1px solid var(--border-hairline);
  background-color: var(--bg-surface);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-secondary);
  font-variant-numeric: tabular-nums;
}

.section-header-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  border-bottom: 1px solid var(--border-hairline);
}

.section-header-main {
  padding: 48px 32px;
  border-right: 1px solid var(--border-hairline);
  min-width: 0;
}

.section-header-main h2 {
  font-size: clamp(2.15rem, 3.6vw, 3.25rem);
  margin-top: 12px;
}

.section-header-aside {
  padding: 48px 32px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  color: var(--ink-secondary);
  font-size: 15px;
  line-height: 1.65;
  min-width: 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.01em;
  border-radius: 2px;
  border: 1px solid transparent;
  transition: background-color 140ms ease, border-color 140ms ease, color 140ms ease;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: #F6F5F0;
  border-color: var(--accent-primary);
}

.btn-primary:hover {
  background-color: var(--accent-primary-hover);
  border-color: var(--accent-primary-hover);
}

.btn-secondary {
  background-color: var(--bg-elevated);
  color: var(--ink-primary);
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  background-color: var(--bg-surface);
  border-color: var(--ink-primary);
}

.btn-signal {
  background-color: var(--accent-signal);
  color: #FAF9F6;
  border-color: var(--accent-signal);
}

.btn-signal:hover {
  background-color: var(--accent-signal-hover);
  border-color: var(--accent-signal-hover);
}

.btn-mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   1. Top Navigation (Zero Backdrop Blur — Crisp Solid Archival Paper)
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-canvas);
  border-bottom: 1px solid var(--border-hairline);
}

.nav-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  height: var(--header-h);
  padding: 0 24px;
  border-left: 1px solid var(--border-hairline);
  border-right: 1px solid var(--border-hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand-cluster {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.brand-wordmark {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--ink-primary);
}

.version-badge {
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 500;
  letter-spacing: 0.06em;
  padding: 3px 7px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-hairline);
  border-radius: 2px;
  color: var(--ink-secondary);
  font-variant-numeric: tabular-nums;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
}

.nav-link {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink-secondary);
  transition: color 120ms ease;
  position: relative;
  padding: 4px 0;
}

.nav-link:hover {
  color: var(--ink-primary);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background-color: var(--ink-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 150ms ease;
}

.nav-link:hover::after {
  transform: scaleX(1);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border-hairline);
  background-color: var(--bg-surface);
  border-radius: 2px;
  padding: 2px;
}

.lang-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  padding: 5px 8px;
  border-radius: 1px;
  color: var(--ink-muted);
  transition: background-color 120ms ease, color 120ms ease;
}

.lang-btn.active {
  background-color: var(--bg-elevated);
  color: var(--ink-primary);
  border: 1px solid var(--border-hairline);
}

.mobile-menu-btn {
  display: none;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 6px 9px;
  border: 1px solid var(--border-hairline);
  background-color: var(--bg-surface);
  border-radius: 2px;
  color: var(--ink-primary);
}

.mobile-nav-drawer {
  display: none;
  border-top: 1px solid var(--border-hairline);
  background-color: var(--bg-elevated);
  max-width: var(--container-max);
  margin: 0 auto;
  border-left: 1px solid var(--border-hairline);
  border-right: 1px solid var(--border-hairline);
}

.mobile-nav-drawer.open {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.mobile-nav-drawer a {
  padding: 13px 20px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-primary);
  border-bottom: 1px solid var(--border-hairline);
  border-right: 1px solid var(--border-hairline);
}

/* ==========================================================================
   2. Hero + Live Dual-Surface Execution Inspector
   ========================================================================== */

.hero-top-grid {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  border-bottom: 1px solid var(--border-hairline);
}

.hero-headline-cell {
  padding: 56px 32px 48px;
  border-right: 1px solid var(--border-hairline);
  min-width: 0;
}

.hero-positioning {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent-primary);
  letter-spacing: 0.02em;
}

.hero-h1 {
  font-size: clamp(2.65rem, 5vw, 4.55rem);
  margin-top: 18px;
  max-width: 15.5ch;
}

html[lang="zh-CN"] .hero-h1 {
  max-width: 14ch;
  font-size: clamp(2.25rem, 4.3vw, 3.85rem);
}

.hero-h1 em {
  font-style: italic;
  color: #363532;
}

.hero-aside-cell {
  padding: 56px 32px 48px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 28px;
  background-color: var(--bg-elevated);
  min-width: 0;
}

.hero-subhead {
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--ink-secondary);
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-spec-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--border-hairline);
  padding-top: 16px;
  gap: 12px;
}

.hero-spec-item {
  min-width: 0;
}

.hero-spec-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--ink-muted);
}

.hero-spec-val {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-primary);
  margin-top: 3px;
  font-variant-numeric: tabular-nums;
}

/* Dual-Surface Execution Sandbox Frame */
.sandbox-wrapper {
  padding: 28px 32px 36px;
  background-color: var(--bg-surface);
}

.sandbox-chrome {
  background-color: var(--bg-terminal);
  color: var(--term-ink);
  border: 1px solid #2A2926;
  border-radius: 2px;
  overflow: hidden;
}

.sandbox-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 12px 16px;
  background-color: var(--term-surface);
  border-bottom: 1px solid var(--term-border);
}

.playbook-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.playbook-tab {
  font-family: var(--font-mono);
  font-size: 11.5px;
  padding: 7px 11px;
  border-radius: 2px;
  border: 1px solid var(--term-border);
  background-color: #161614;
  color: var(--term-muted);
  transition: all 120ms ease;
  font-variant-numeric: tabular-nums;
  text-align: left;
}

.playbook-tab:hover {
  color: var(--term-ink);
  border-color: #45433D;
}

.playbook-tab.active {
  background-color: var(--accent-primary);
  border-color: #366B4F;
  color: #F6F5F0;
}

.sandbox-controls-right {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.dryrun-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 6px 10px;
  border: 1px solid var(--term-border);
  border-radius: 2px;
  background-color: #161614;
  color: var(--term-ink);
}

.switch-track {
  width: 28px;
  height: 14px;
  border: 1px solid #57544C;
  background-color: #242320;
  border-radius: 2px;
  position: relative;
  display: inline-block;
  transition: background-color 140ms ease, border-color 140ms ease;
}

.switch-thumb {
  position: absolute;
  top: 1px;
  left: 1px;
  width: 10px;
  height: 10px;
  background-color: #9A978E;
  transition: transform 140ms ease, background-color 140ms ease;
}

.dryrun-toggle[aria-checked="true"] .switch-track {
  background-color: var(--accent-primary);
  border-color: var(--term-green);
}

.dryrun-toggle[aria-checked="true"] .switch-thumb {
  transform: translateX(14px);
  background-color: #F6F5F0;
}

.replay-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 6px 10px;
  border: 1px solid var(--term-border);
  border-radius: 2px;
  background-color: var(--term-elevated);
  color: var(--term-ink);
}

.replay-btn:hover {
  border-color: var(--term-muted);
}

/* Dual Surface Split Panes */
.sandbox-panes {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  min-height: 460px;
}

.viewport-pane {
  border-right: 1px solid var(--term-border);
  display: flex;
  flex-direction: column;
  min-width: 0;
  position: relative;
}

.pane-subbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 16px;
  border-bottom: 1px solid var(--term-border);
  background-color: #181816;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--term-muted);
  font-variant-numeric: tabular-nums;
}

.viewport-stage {
  flex: 1;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
  position: relative;
  background-image:
    linear-gradient(to right, rgba(236, 234, 227, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(236, 234, 227, 0.03) 1px, transparent 1px);
  background-size: 24px 24px;
}

/* Device Wireframe Inside Viewport */
.device-frame {
  border: 1px solid #3A3833;
  background-color: #191917;
  border-radius: 2px;
  padding: 14px;
  position: relative;
}

.device-frame-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--term-border);
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--term-muted);
}

.ui-nodes-stack {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ui-node-box {
  border: 1px dashed #3D3B35;
  background-color: #141413;
  padding: 10px 12px;
  border-radius: 2px;
  position: relative;
  transition: border-color 180ms ease, background-color 180ms ease;
}

.ui-node-box.active-scan {
  border-style: solid;
  border-color: var(--term-green);
  background-color: rgba(27, 59, 43, 0.24);
}

.ui-node-box.gate-locked {
  border-style: solid;
  border-color: var(--accent-signal);
  background-color: rgba(184, 74, 39, 0.14);
}

.ui-node-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--term-muted);
  margin-bottom: 5px;
}

.node-tag {
  color: var(--term-green);
  font-weight: 500;
}

.ui-node-box.gate-locked .node-tag {
  color: var(--term-signal);
}

.ui-node-content {
  font-size: 12.5px;
  color: var(--term-ink);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

/* Edge-Avoiding Gaussian Touch Cluster Indicator */
.gaussian-reticle {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 3px 7px;
  border: 1px solid #355E49;
  background-color: #13241B;
  color: #7CCFA2;
  border-radius: 2px;
  flex-shrink: 0;
}

.gaussian-svg {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

/* Inline Fiduciary Approval Card Inside Sandbox */
.fiduciary-gate-card {
  border: 1px solid var(--accent-signal);
  background-color: #1E1714;
  border-radius: 2px;
  padding: 14px 16px;
  display: none;
  flex-direction: column;
  gap: 10px;
}

.fiduciary-gate-card.visible {
  display: flex;
}

.gate-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: #F29B7E;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.gate-card-body {
  font-size: 12.5px;
  color: var(--term-ink);
  line-height: 1.5;
}

.gate-meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 8px 10px;
  background-color: #141413;
  border: 1px solid #382822;
  font-family: var(--font-mono);
  font-size: 10.5px;
}

.gate-meta-label {
  color: var(--term-muted);
  display: block;
}

.gate-meta-val {
  color: var(--term-ink);
  font-weight: 500;
}

.gate-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 2px;
}

.gate-btn-approve {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  padding: 8px 13px;
  background-color: var(--accent-primary);
  border: 1px solid #3B7A59;
  color: #F6F5F0;
  border-radius: 2px;
}

.gate-btn-approve:hover {
  background-color: #234D38;
}

.gate-btn-halt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  padding: 8px 13px;
  background-color: transparent;
  border: 1px solid var(--accent-signal);
  color: #F29B7E;
  border-radius: 2px;
}

.gate-btn-halt:hover {
  background-color: rgba(184, 74, 39, 0.22);
}

/* Right Pane: State Machine Telemetry Log */
.trace-pane {
  display: flex;
  flex-direction: column;
  min-width: 0;
  background-color: #141413;
}

.trace-log-list {
  flex: 1;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
  max-height: 410px;
}

.trace-entry {
  border: 1px solid #252421;
  background-color: #181816;
  padding: 9px 11px;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 1.5;
  font-variant-numeric: tabular-nums;
}

.trace-entry.current {
  border-color: #3D7D5B;
  background-color: #15201A;
}

.trace-entry.waiting-gate {
  border-color: var(--accent-signal);
  background-color: #211714;
}

.trace-entry.halted {
  border-color: var(--accent-signal);
  background-color: #1D1513;
}

.trace-entry-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 3px;
}

.trace-state-tag {
  font-weight: 500;
  color: #ECEAE3;
}

.trace-entry.current .trace-state-tag {
  color: #7CCFA2;
}

.trace-entry.waiting-gate .trace-state-tag,
.trace-entry.halted .trace-state-tag {
  color: #F29B7E;
}

.trace-ts {
  color: var(--term-dim);
  font-size: 10px;
}

.trace-detail {
  color: var(--term-muted);
  font-size: 10.5px;
  word-break: break-word;
}

.sandbox-footer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 10px 16px;
  background-color: var(--term-surface);
  border-top: 1px solid var(--term-border);
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--term-muted);
  font-variant-numeric: tabular-nums;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--term-ink);
}

.led {
  width: 6px;
  height: 6px;
  background-color: var(--term-green);
  display: inline-block;
}

.led.signal {
  background-color: var(--term-signal);
}

/* ==========================================================================
   3. The Un-API'd 90% Thesis Strip (3-Paradigm Architectural Matrix)
   ========================================================================== */

.matrix-scroll-wrap {
  width: 100%;
  overflow-x: auto;
}

.thesis-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
  min-width: 760px;
}

.thesis-table th,
.thesis-table td {
  padding: 20px 24px;
  border-right: 1px solid var(--border-hairline);
  border-bottom: 1px solid var(--border-hairline);
  text-align: left;
  vertical-align: top;
  font-size: 13.5px;
  line-height: 1.55;
}

.thesis-table th:last-child,
.thesis-table td:last-child {
  border-right: none;
}

.thesis-table tbody tr:last-child td,
.thesis-table tbody tr:last-child th {
  border-bottom: none;
}

.thesis-table thead th {
  background-color: var(--bg-surface);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-secondary);
}

.thesis-table thead th.col-tarmac {
  background-color: var(--accent-primary);
  color: #F6F5F0;
}

.thesis-table tbody th.axis-cell {
  width: 19%;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  color: var(--ink-primary);
  background-color: var(--bg-elevated);
}

.thesis-table td.col-legacy {
  color: var(--ink-secondary);
  background-color: var(--bg-canvas);
}

.thesis-table td.col-tarmac {
  background-color: var(--accent-primary-tint);
  color: var(--ink-primary);
  font-weight: 500;
}

.cell-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 2px 6px;
  margin-bottom: 6px;
  border: 1px solid var(--border-strong);
  border-radius: 2px;
  color: var(--ink-muted);
}

.col-tarmac .cell-tag {
  border-color: var(--accent-primary);
  background-color: var(--accent-primary);
  color: #F6F5F0;
}

/* ==========================================================================
   4. Core Architecture Pillars + HTML5 Canvas Oscilloscope
   ========================================================================== */

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-bottom: 1px solid var(--border-hairline);
}

.pillar-cell {
  padding: 32px;
  border-right: 1px solid var(--border-hairline);
  background-color: var(--bg-elevated);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 20px;
  min-width: 0;
}

.pillar-cell:last-child {
  border-right: none;
}

.pillar-idx {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent-primary);
  letter-spacing: 0.06em;
}

.pillar-title {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 400;
  line-height: 1.15;
  margin-top: 8px;
}

.pillar-desc {
  font-size: 14px;
  color: var(--ink-secondary);
  line-height: 1.65;
  margin-top: 10px;
}

.pillar-spec {
  padding-top: 14px;
  border-top: 1px solid var(--border-hairline);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-muted);
  display: flex;
  justify-content: space-between;
  gap: 8px;
}

/* Oscilloscope Bay */
.oscilloscope-bay {
  padding: 28px 32px 36px;
  background-color: var(--bg-surface);
}

.scope-frame {
  background-color: var(--bg-terminal);
  border: 1px solid #2A2926;
  border-radius: 2px;
  color: var(--term-ink);
  overflow: hidden;
}

.scope-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 14px 18px;
  background-color: var(--term-surface);
  border-bottom: 1px solid var(--term-border);
}

.scope-legend {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--term-muted);
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.legend-swatch-dashed {
  width: 18px;
  height: 0;
  border-top: 2px dashed #A85A44;
  display: inline-block;
}

.legend-swatch-solid {
  width: 18px;
  height: 2px;
  background-color: var(--term-green);
  display: inline-block;
}

.scope-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.scope-canvas-wrap {
  position: relative;
  width: 100%;
  height: 250px;
  background-color: #141413;
}

#pacing-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.scope-breaker-banner {
  position: absolute;
  top: 14px;
  right: 16px;
  border: 1px solid var(--accent-signal);
  background-color: rgba(26, 17, 14, 0.96);
  padding: 10px 14px;
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: #F5A387;
  display: none;
  max-width: calc(100% - 32px);
}

.scope-breaker-banner.tripped {
  display: block;
}

.scope-telemetry-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--term-border);
  background-color: #181816;
}

.scope-metric {
  padding: 12px 16px;
  border-right: 1px solid var(--term-border);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  min-width: 0;
}

.scope-metric:last-child {
  border-right: none;
}

.scope-metric-label {
  display: block;
  font-size: 10px;
  color: var(--term-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.scope-metric-val {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--term-ink);
  margin-top: 3px;
}

.scope-metric-val.tripped-val {
  color: #F29B7E;
}

/* ==========================================================================
   5. Closed-Loop Production Engines (Engine A + Engine B)
   ========================================================================== */

.engine-block {
  border-bottom: 1px solid var(--border-hairline);
}

.engine-block:last-child {
  border-bottom: none;
}

.engine-subbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 16px 32px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-hairline);
}

.engine-tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  color: var(--accent-primary);
  letter-spacing: 0.05em;
}

/* Engine A: Deal-Room Simulator */
.deal-sim-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
}

.sim-controls-col {
  padding: 32px;
  border-right: 1px solid var(--border-hairline);
  background-color: var(--bg-elevated);
  display: flex;
  flex-direction: column;
  gap: 24px;
  min-width: 0;
}

.sim-intro {
  font-size: 14px;
  color: var(--ink-secondary);
  line-height: 1.6;
}

.slider-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.slider-label-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

.slider-name {
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink-primary);
}

.slider-readout {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  color: var(--accent-primary);
  font-variant-numeric: tabular-nums;
}

input[type="range"].arch-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 4px;
  background: var(--border-strong);
  border-radius: 0;
  outline: none;
}

input[type="range"].arch-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  background: var(--accent-primary);
  border: 2px solid var(--bg-elevated);
  border-radius: 2px;
  cursor: pointer;
}

input[type="range"].arch-slider::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--accent-primary);
  border: 2px solid var(--bg-elevated);
  border-radius: 2px;
  cursor: pointer;
}

.slider-scale {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-muted);
  font-variant-numeric: tabular-nums;
}

.sim-outputs-col {
  padding: 32px;
  background-color: var(--bg-canvas);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 24px;
  min-width: 0;
}

.sim-kpi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--border-hairline);
  background-color: var(--bg-elevated);
}

.sim-kpi-card {
  padding: 20px 18px;
  border-right: 1px solid var(--border-hairline);
  min-width: 0;
}

.sim-kpi-card:last-child {
  border-right: none;
}

.sim-kpi-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-muted);
  display: block;
}

.sim-kpi-val {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 2.5vw, 2.35rem);
  line-height: 1.1;
  color: var(--ink-primary);
  margin-top: 10px;
  display: block;
  font-variant-numeric: tabular-nums;
}

.sim-kpi-delta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent-primary);
  margin-top: 8px;
  display: block;
  font-variant-numeric: tabular-nums;
}

.sim-bars-box {
  border: 1px solid var(--border-hairline);
  background-color: var(--bg-elevated);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.bar-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.bar-meta {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-secondary);
  font-variant-numeric: tabular-nums;
}

.bar-track {
  width: 100%;
  height: 10px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-hairline);
}

.bar-fill {
  height: 100%;
  background-color: #9E9B91;
  transition: width 180ms ease;
}

.bar-fill.tarmac-fill {
  background-color: var(--accent-primary);
}

/* Engine B: Elastic Hybrid Workforce Topology */
.workforce-layout {
  padding: 32px;
  background-color: var(--bg-canvas);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.workforce-top-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.tier-selector {
  display: inline-flex;
  border: 1px solid var(--border-strong);
  background-color: var(--bg-surface);
  border-radius: 2px;
  padding: 3px;
  gap: 4px;
}

.tier-btn {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: 2px;
  color: var(--ink-secondary);
  font-variant-numeric: tabular-nums;
  transition: all 120ms ease;
}

.tier-btn.active {
  background-color: var(--accent-primary);
  color: #F6F5F0;
}

.topology-svg-frame {
  border: 1px solid var(--border-hairline);
  background-color: var(--bg-elevated);
  padding: 20px;
  overflow: hidden;
}

#workforce-svg {
  width: 100%;
  height: auto;
  display: block;
}

.pipeline-six-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  border: 1px solid var(--border-hairline);
  background-color: var(--bg-elevated);
}

.pipeline-step {
  padding: 16px 14px;
  border-right: 1px solid var(--border-hairline);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 10px;
  min-width: 0;
}

.pipeline-step:last-child {
  border-right: none;
}

.step-num {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--ink-muted);
}

.step-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-primary);
  margin-top: 2px;
}

.step-metric {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent-primary);
  padding-top: 8px;
  border-top: 1px dashed var(--border-hairline);
  font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   6. Sovereign Security & AOP Code Preview
   ========================================================================== */

.governance-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
}

.aop-code-col {
  padding: 32px;
  border-right: 1px solid var(--border-hairline);
  background-color: var(--bg-surface);
  min-width: 0;
}

.code-window {
  background-color: var(--bg-terminal);
  border: 1px solid #2A2926;
  border-radius: 2px;
  overflow: hidden;
}

.code-tabs-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 14px;
  background-color: var(--term-surface);
  border-bottom: 1px solid var(--term-border);
}

.code-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.code-tab {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 5px 10px;
  border-radius: 2px;
  border: 1px solid var(--term-border);
  color: var(--term-muted);
  background-color: #151513;
}

.code-tab.active {
  background-color: var(--accent-primary);
  border-color: #3A7557;
  color: #F6F5F0;
}

.code-tab.anti-active {
  background-color: #3A1F17;
  border-color: var(--accent-signal);
  color: #F5A387;
}

.code-pre {
  padding: 20px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.65;
  color: var(--term-ink);
  overflow-x: auto;
  max-width: 100%;
  font-variant-numeric: tabular-nums;
}

.tok-comment { color: #757269; }
.tok-key { color: #8ACBA9; }
.tok-str { color: #E5DFD0; }
.tok-num { color: #E69A7B; }
.tok-warn { color: #F28B66; }

.security-specs-col {
  display: flex;
  flex-direction: column;
  background-color: var(--bg-elevated);
  min-width: 0;
}

.security-spec-row {
  padding: 28px 32px;
  border-bottom: 1px solid var(--border-hairline);
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.security-spec-row:last-child {
  border-bottom: none;
}

.sec-badge {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--accent-primary);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.sec-title {
  font-family: var(--font-serif);
  font-size: 24px;
  margin-top: 6px;
  color: var(--ink-primary);
}

.sec-body {
  font-size: 14px;
  color: var(--ink-secondary);
  line-height: 1.65;
  margin-top: 8px;
}

/* ==========================================================================
   7. Signed Founder's Thesis Memo & Minimalist Footer
   ========================================================================== */

.memo-outer {
  padding: 56px 32px;
  background-color: var(--bg-surface);
}

.memo-sheet {
  max-width: 840px;
  margin: 0 auto;
  background-color: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  padding: 56px 64px;
  position: relative;
}

.memo-meta-top {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-hairline);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.founder-memo-title {
  font-size: clamp(2.2rem, 3.8vw, 3.2rem);
  margin-top: 28px;
  margin-bottom: 28px;
}

.memo-prose {
  display: flex;
  flex-direction: column;
  gap: 18px;
  font-size: 16px;
  line-height: 1.78;
  color: #262523;
}

.memo-prose p strong {
  font-weight: 600;
  color: var(--ink-primary);
}

.memo-pullquote {
  margin: 10px 0;
  padding: 16px 22px;
  border-left: 2px solid var(--accent-primary);
  background-color: var(--bg-canvas);
  font-family: var(--font-serif);
  font-size: 22px;
  line-height: 1.35;
  color: var(--ink-primary);
}

html[lang="zh-CN"] .memo-pullquote {
  font-size: 19px;
  line-height: 1.55;
}

.memo-signoff {
  margin-top: 38px;
  padding-top: 28px;
  border-top: 1px solid var(--border-hairline);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.signature-svg {
  width: 210px;
  height: 58px;
  display: block;
}

.founder-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-primary);
}

.founder-bio-line {
  font-size: 13.5px;
  color: var(--ink-secondary);
  margin-top: 3px;
}

.founder-links-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

.founder-social-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 7px 12px;
  border: 1px solid var(--border-strong);
  background-color: var(--bg-canvas);
  border-radius: 2px;
  color: var(--ink-primary);
  transition: border-color 120ms ease, background-color 120ms ease;
}

.founder-social-link:hover {
  border-color: var(--ink-primary);
  background-color: var(--bg-surface);
}

/* Minimalist Footer */
.site-footer {
  background-color: var(--bg-canvas);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  padding: 36px 32px;
  gap: 24px;
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-tagline {
  font-size: 13.5px;
  color: var(--ink-secondary);
  max-width: 46ch;
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-muted);
  margin-top: 8px;
}

.footer-nav-col {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 18px;
  font-size: 13px;
  color: var(--ink-secondary);
}

.footer-links a:hover {
  color: var(--ink-primary);
}

/* ==========================================================================
   Enterprise Architecture Access Modal (Zero Backdrop Blur)
   ========================================================================== */

.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  background-color: rgba(20, 20, 19, 0.62);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.open {
  display: flex;
}

.modal-dialog {
  width: 100%;
  max-width: 540px;
  background-color: var(--bg-elevated);
  border: 1px solid var(--ink-primary);
  border-radius: 2px;
  max-height: 92vh;
  overflow-y: auto;
}

.modal-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 22px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-hairline);
}

.modal-close-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 4px 8px;
  border: 1px solid var(--border-strong);
  border-radius: 2px;
  color: var(--ink-secondary);
}

.modal-close-btn:hover {
  color: var(--ink-primary);
  border-color: var(--ink-primary);
}

.modal-body {
  padding: 26px 24px 28px;
}

.modal-title {
  font-family: var(--font-serif);
  font-size: 30px;
  line-height: 1.12;
}

.modal-subtitle {
  font-size: 13.5px;
  color: var(--ink-secondary);
  margin-top: 8px;
  margin-bottom: 22px;
}

.form-stack {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field-label {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-secondary);
}

.field-input,
.field-select,
.field-textarea {
  width: 100%;
  padding: 10px 12px;
  font-size: 14px;
  background-color: var(--bg-canvas);
  border: 1px solid var(--border-strong);
  border-radius: 2px;
  color: var(--ink-primary);
}

.field-input:focus,
.field-select:focus,
.field-textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
}

.modal-error {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--accent-signal);
  display: none;
}

.modal-error.visible {
  display: block;
}

.receipt-box {
  display: none;
  flex-direction: column;
  gap: 16px;
}

.receipt-box.visible {
  display: flex;
}

.receipt-card {
  border: 1px solid var(--accent-primary);
  background-color: var(--accent-primary-tint);
  padding: 18px;
  border-radius: 2px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.receipt-ref-id {
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 500;
  color: var(--accent-primary);
  font-variant-numeric: tabular-nums;
}

.receipt-meta {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   Responsive Breakpoints (Tablet & 390px Mobile Zero-Overflow Guarantee)
   ========================================================================== */

@media (max-width: 1060px) {
  .hero-top-grid,
  .section-header-grid,
  .sandbox-panes,
  .deal-sim-grid,
  .governance-grid {
    grid-template-columns: 1fr;
  }

  .hero-headline-cell,
  .section-header-main,
  .viewport-pane,
  .sim-controls-col,
  .aop-code-col {
    border-right: none;
    border-bottom: 1px solid var(--border-hairline);
  }

  .viewport-pane {
    border-bottom-color: var(--term-border);
  }

  .pillars-grid {
    grid-template-columns: 1fr;
  }

  .pillar-cell {
    border-right: none;
    border-bottom: 1px solid var(--border-hairline);
  }

  .pillar-cell:last-child {
    border-bottom: none;
  }

  .pipeline-six-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pipeline-step {
    border-bottom: 1px solid var(--border-hairline);
  }

  .scope-telemetry-strip {
    grid-template-columns: repeat(2, 1fr);
  }

  .scope-metric {
    border-bottom: 1px solid var(--term-border);
  }
}

@media (max-width: 820px) {
  .nav-links,
  .version-badge {
    display: none;
  }

  .mobile-menu-btn {
    display: inline-flex;
  }

  .nav-inner {
    padding: 0 14px;
    gap: 8px;
  }

  .arch-container {
    border-left: none;
    border-right: none;
  }

  .fiducial {
    display: none;
  }

  .section-index-bar {
    padding: 12px 18px;
    font-size: 10px;
  }

  .hero-headline-cell,
  .hero-aside-cell,
  .section-header-main,
  .section-header-aside,
  .pillar-cell,
  .sim-controls-col,
  .sim-outputs-col,
  .workforce-layout,
  .aop-code-col,
  .security-spec-row,
  .footer-grid {
    padding: 28px 18px;
  }

  .sandbox-wrapper,
  .oscilloscope-bay {
    padding: 18px 14px 24px;
  }

  .memo-outer {
    padding: 32px 14px;
  }

  .memo-sheet {
    padding: 32px 20px;
  }

  .sim-kpi-grid {
    grid-template-columns: 1fr;
  }

  .sim-kpi-card {
    border-right: none;
    border-bottom: 1px solid var(--border-hairline);
  }

  .sim-kpi-card:last-child {
    border-bottom: none;
  }

  .hero-spec-strip {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-nav-col {
    align-items: flex-start;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 480px) {
  .brand-wordmark {
    font-size: 13px;
    letter-spacing: 0.08em;
  }

  .nav-actions {
    gap: 6px;
  }

  .nav-actions .btn-primary {
    padding: 7px 10px;
    font-size: 12px;
  }

  .lang-btn {
    padding: 4px 6px;
    font-size: 10.5px;
  }

  .pipeline-six-grid {
    grid-template-columns: 1fr;
  }

  .pipeline-step {
    border-right: none;
  }

  .gate-meta-grid {
    grid-template-columns: 1fr;
  }

  .tier-selector {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }

  .tier-btn {
    padding: 8px 6px;
    font-size: 11px;
    text-align: center;
  }

  .ui-node-content {
    flex-direction: column;
    align-items: flex-start;
  }
}