/**
 * ĀTMAN — "What Is ĀTMAN?" Dedicated Stylesheet (what-is-atman.css)
 * High-performance, zero-dependency, WCAG 2.2 AAA/AA compliant design system.
 */

:root {
  /* Spatial & Surface Tokens */
  --wia-bg-space: #070705;
  --wia-bg-void: #0D0D0A;
  --wia-surface-card: rgba(22, 20, 16, 0.82);
  --wia-surface-elevated: rgba(30, 26, 20, 0.92);
  --wia-surface-hover: rgba(38, 33, 25, 0.96);
  --wia-surface-inset: rgba(14, 13, 10, 0.85);

  /* Typography & Readability */
  --wia-text-primary: #F7F5EE;
  --wia-text-secondary: #B6B2A4;
  --wia-text-tertiary: #848072;
  --wia-text-muted: #565348;

  /* Chromatic Signatures */
  --wia-gold: #C9B27C;
  --wia-gold-radiant: #E5CD95;
  --wia-gold-bright: #FCE5B2;
  --wia-gold-deep: #968153;
  --wia-gold-subtle: rgba(201, 178, 124, 0.14);
  --wia-gold-dim: rgba(201, 178, 124, 0.06);

  --wia-slate: #7F92A6;
  --wia-slate-glow: rgba(127, 146, 166, 0.28);
  --wia-slate-dim: rgba(127, 146, 166, 0.08);

  --wia-border-faint: rgba(237, 232, 216, 0.06);
  --wia-border-subtle: rgba(237, 232, 216, 0.12);
  --wia-border-active: rgba(237, 232, 216, 0.24);
  --wia-border-gold: rgba(201, 178, 124, 0.45);

  /* Control Heights & Radii */
  --wia-control-height: 48px;
  --wia-radius-sm: 6px;
  --wia-radius-md: 10px;
  --wia-radius-lg: 16px;
  --wia-radius-pill: 9999px;

  /* Font Stacks */
  --wia-font-display: 'Bricolage Grotesque', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --wia-font-body: 'Instrument Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --wia-font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;

  /* Easing */
  --wia-ease-organic: cubic-bezier(0.16, 1, 0.3, 1);
  --wia-ease-precise: cubic-bezier(0.2, 0, 0, 1);
}

[data-theme="light"] {
  --wia-bg-space: #FBF9F4;
  --wia-bg-void: #F4EFE6;
  --wia-surface-card: rgba(255, 255, 255, 0.88);
  --wia-surface-elevated: #FFFFFF;
  --wia-surface-hover: #F8F5EE;
  --wia-surface-inset: #EDE7DB;

  --wia-text-primary: #181612;
  --wia-text-secondary: #484338;
  --wia-text-tertiary: #6E685A;
  --wia-text-muted: #968F7E;

  --wia-gold: #967B38;
  --wia-gold-radiant: #7D652B;
  --wia-gold-bright: #624F1F;
  --wia-gold-deep: #5A481B;
  --wia-gold-subtle: rgba(150, 123, 56, 0.12);
  --wia-gold-dim: rgba(150, 123, 56, 0.05);

  --wia-slate: #526375;
  --wia-slate-glow: rgba(82, 99, 117, 0.20);
  --wia-slate-dim: rgba(82, 99, 117, 0.08);

  --wia-border-faint: rgba(24, 22, 18, 0.06);
  --wia-border-subtle: rgba(24, 22, 18, 0.12);
  --wia-border-active: rgba(24, 22, 18, 0.22);
  --wia-border-gold: rgba(150, 123, 56, 0.40);
}

/* ─── Global Scoped Architecture ─────────────────────────────────────────── */
html {
  max-width: 100%;
  width: 100%;
  height: auto;
  box-sizing: border-box;
  scroll-behavior: smooth;
}

body.what-atman-body {
  display: flex !important;
  flex-direction: column !important;
  min-height: 100vh !important;
  height: auto !important;
  overflow-x: hidden !important;
  overflow-y: auto !important;
  overscroll-behavior: auto !important;
  overscroll-behavior-y: auto !important;
  background-color: var(--wia-bg-space) !important;
  color: var(--wia-text-primary) !important;
  font-family: var(--wia-font-body);
  line-height: 1.6;
  max-width: 100%;
  width: 100%;
  position: relative;
  box-sizing: border-box;
  scroll-behavior: smooth;
}

.wia-container {
  width: 100%;
  max-width: 1140px;
  min-width: 0;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  box-sizing: border-box;
}

#main-content.wia-stage {
  display: block;
  flex: 1 0 auto !important;
  width: 100% !important;
  max-width: 100% !important;
  position: relative;
  box-sizing: border-box;
}

body.what-atman-body .atman-footer {
  width: 100% !important;
  max-width: 100% !important;
  flex-shrink: 0 !important;
  box-sizing: border-box !important;
  margin-top: auto !important;
  opacity: 1 !important;
  transform: none !important;
  filter: none !important;
  visibility: visible !important;
}

/* ─── Keyboard Accessibility & Focus Rings ──────────────────────────────── */
.what-atman-body a:focus-visible,
.what-atman-body button:focus-visible,
.what-atman-body .theme-switch:focus-visible,
.what-atman-body summary:focus-visible,
.what-atman-body [tabindex="0"]:focus-visible {
  outline: 2px solid var(--wia-gold) !important;
  outline-offset: 3px !important;
}

/* ─── A. Opening: Staged Entrance Animations ────────────────────────────── */
@keyframes wiaHeroFadeUp {
  from {
    opacity: 0;
    transform: translate3d(0, 16px, 0);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

.wia-badge-wrap {
  animation: wiaHeroFadeUp 0.50s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.wia-hero-title {
  animation: wiaHeroFadeUp 0.60s cubic-bezier(0.16, 1, 0.3, 1) 0.08s both;
}

.wia-lead-paragraph {
  animation: wiaHeroFadeUp 0.60s cubic-bezier(0.16, 1, 0.3, 1) 0.16s both;
}

.wia-body-paragraph {
  animation: wiaHeroFadeUp 0.60s cubic-bezier(0.16, 1, 0.3, 1) 0.24s both;
}

.wia-actions-group {
  animation: wiaHeroFadeUp 0.60s cubic-bezier(0.16, 1, 0.3, 1) 0.32s both;
}

.wia-hero-meta {
  animation: wiaHeroFadeUp 0.60s cubic-bezier(0.16, 1, 0.3, 1) 0.40s both;
}

.wia-hero-visual {
  animation: wiaHeroFadeUp 0.75s cubic-bezier(0.16, 1, 0.3, 1) 0.12s both;
}

/* ─── B. Scroll Flow: Coherent Non-Intrusive Reveals ───────────────────── */
.wia-reveal {
  opacity: 0;
  transform: translate3d(0, 18px, 0);
  transition: opacity 0.60s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.60s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.wia-reveal.wia-revealed {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

.wia-stagger-1 { transition-delay: 0.06s; }
.wia-stagger-2 { transition-delay: 0.12s; }
.wia-stagger-3 { transition-delay: 0.18s; }
.wia-stagger-4 { transition-delay: 0.24s; }

/* Progressive Enhancement: W3C Scroll-Driven Animation Level 1 */
@supports (animation-timeline: view()) {
  .wia-scroll-timeline-flow {
    animation: wiaScrollEntry linear both;
    animation-timeline: view();
    animation-range: entry 10% cover 25%;
  }

  @keyframes wiaScrollEntry {
    from {
      opacity: 0;
      transform: translate3d(0, 20px, 0);
    }
    to {
      opacity: 1;
      transform: translate3d(0, 0, 0);
    }
  }
}

.wia-section {
  width: 100%;
  max-width: 100%;
  padding: 88px 0;
  position: relative;
  border-bottom: 1px solid var(--wia-border-faint);
  box-sizing: border-box;
}

.wia-matrix-section {
  overflow-x: hidden;
}

.wia-section:last-of-type {
  border-bottom: none;
}

.wia-gold-gradient {
  background: linear-gradient(135deg, var(--wia-gold-bright) 0%, var(--wia-gold) 60%, var(--wia-gold-deep) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ─── Section Header Pattern ─────────────────────────────────────────────── */
.wia-section-header {
  max-width: 760px;
  margin-bottom: 48px;
}

.wia-section-eyebrow {
  display: inline-block;
  font-family: var(--wia-font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--wia-gold);
  margin-bottom: 14px;
}

.wia-section-title {
  font-family: var(--wia-font-display);
  font-size: clamp(1.9rem, 1.5rem + 1.6vw, 2.75rem);
  font-weight: 600;
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: var(--wia-text-primary);
  margin-bottom: 16px;
}

.wia-section-desc {
  font-size: 1.05rem;
  color: var(--wia-text-secondary);
  line-height: 1.65;
}

/* ─── 1. Hero Section ────────────────────────────────────────────────────── */
.wia-hero-section {
  padding-top: 140px;
  padding-bottom: 96px;
  background: radial-gradient(circle at 75% 35%, rgba(201, 178, 124, 0.07) 0%, transparent 60%);
}

.wia-hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.wia-hero-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 620px;
}

.wia-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--wia-font-mono);
  font-size: 0.70rem;
  letter-spacing: 0.06em;
  padding: 5px 12px;
  background: var(--wia-gold-dim);
  border: 1px solid var(--wia-gold-subtle);
  border-radius: var(--wia-radius-pill);
  color: var(--wia-gold);
  max-width: 100%;
  box-sizing: border-box;
  line-height: 1.4;
}

.wia-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--wia-gold);
  box-shadow: 0 0 8px var(--wia-gold);
  animation: wiaPulseDot 2.8s infinite ease-in-out;
}

@keyframes wiaPulseDot {
  0%, 100% { opacity: 0.4; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.3); }
}

.wia-hero-title {
  font-family: var(--wia-font-display);
  font-size: clamp(2.35rem, 1.8rem + 2.5vw, 3.85rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--wia-text-primary);
}

.wia-lead-paragraph {
  font-size: clamp(1.08rem, 1.0rem + 0.3vw, 1.22rem);
  line-height: 1.55;
  color: var(--wia-text-primary);
  font-weight: 400;
}

.wia-lead-paragraph strong {
  font-weight: 600;
  color: var(--wia-gold-bright);
}

.wia-body-paragraph {
  font-size: 0.98rem;
  line-height: 1.65;
  color: var(--wia-text-secondary);
}

.wia-actions-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-top: 10px;
}

/* Button Foundations */
.wia-btn-primary,
.wia-btn-secondary,
.wia-btn-ghost {
  height: var(--wia-control-height);
  padding: 0 24px;
  border-radius: var(--wia-radius-md);
  font-family: var(--wia-font-body);
  font-size: 0.92rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  cursor: pointer;
  user-select: none;
  transition: transform 0.2s var(--wia-ease-precise), box-shadow 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.wia-btn-primary {
  background: linear-gradient(135deg, #D4BE88 0%, #C9B27C 60%, #A89052 100%);
  color: #0A0907;
  border: 1px solid #C9B27C;
  box-shadow: 0 4px 18px rgba(201, 178, 124, 0.25);
}

.wia-btn-primary:hover {
  transform: translateY(-1.5px);
  box-shadow: 0 8px 24px rgba(201, 178, 124, 0.38);
  filter: brightness(1.05);
}

.wia-btn-primary:active {
  transform: translateY(0);
}

.wia-btn-secondary {
  background: var(--wia-surface-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--wia-text-primary);
  border: 1px solid var(--wia-border-subtle);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
}

.wia-btn-secondary:hover {
  background: var(--wia-surface-elevated);
  border-color: var(--wia-border-gold);
  transform: translateY(-1.5px);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.35);
}

.wia-btn-ghost {
  background: transparent;
  color: var(--wia-text-tertiary);
  border: 1px solid transparent;
}

.wia-btn-ghost:hover {
  color: var(--wia-text-primary);
  border-color: var(--wia-border-subtle);
}

.wia-btn-arrow {
  font-size: 0.9em;
  transition: transform 0.2s ease;
}

.wia-btn-primary:hover .wia-btn-arrow,
.wia-btn-secondary:hover .wia-btn-arrow {
  transform: translateX(2px);
}

.wia-hero-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--wia-text-tertiary);
  margin-top: 14px;
}

.wia-meta-label {
  font-family: var(--wia-font-mono);
  color: var(--wia-text-muted);
}

.wia-meta-val {
  color: var(--wia-text-secondary);
  font-weight: 500;
}

/* Hero Visual Canvas Area */
.wia-hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.wia-canvas-container {
  width: 100%;
  max-width: 480px;
  aspect-ratio: 1 / 1;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.wia-canvas {
  width: 100%;
  height: 100%;
  display: block;
  border-radius: var(--wia-radius-lg);
  background: radial-gradient(circle, rgba(22, 20, 16, 0.4) 0%, transparent 70%);
}

.wia-svg-fallback {
  display: none;
  width: 100%;
  height: 100%;
}

.canvas-disabled .wia-canvas {
  display: none;
}

.canvas-disabled .wia-svg-fallback {
  display: block;
}

.wia-canvas-caption {
  margin-top: 14px;
  font-family: var(--wia-font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  color: var(--wia-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 6px;
  max-width: 100%;
  flex-wrap: wrap;
  white-space: normal;
  box-sizing: border-box;
}

.wia-caption-glyph {
  color: var(--wia-gold);
}

/* ─── 2. Section: The Question & Phase Shift ─────────────────────────────── */
.wia-split-prose {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  margin-bottom: 48px;
}

.wia-prose-block {
  background: var(--wia-surface-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--wia-border-subtle);
  border-radius: var(--wia-radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.wia-block-subtitle {
  font-family: var(--wia-font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--wia-text-primary);
  letter-spacing: -0.01em;
}

.wia-prose-block p {
  font-size: 0.96rem;
  color: var(--wia-text-secondary);
  line-height: 1.65;
}

/* Phase Shift Interactive Component */
.wia-phase-shift-card {
  background: var(--wia-surface-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--wia-border-subtle);
  border-radius: var(--wia-radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
}

.wia-phase-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.wia-phase-title {
  font-family: var(--wia-font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--wia-text-primary);
  margin-bottom: 4px;
}

.wia-phase-desc {
  font-size: 0.90rem;
  color: var(--wia-text-secondary);
}

.wia-phase-controls {
  display: inline-flex;
  align-items: center;
  background: var(--wia-surface-inset);
  padding: 4px;
  border-radius: var(--wia-radius-md);
  border: 1px solid var(--wia-border-faint);
  gap: 4px;
}

.wia-phase-btn {
  height: 38px;
  padding: 0 16px;
  border: none;
  border-radius: var(--wia-radius-sm);
  background: transparent;
  color: var(--wia-text-tertiary);
  font-family: var(--wia-font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s var(--wia-ease-precise);
  user-select: none;
}

.wia-phase-btn.active {
  background: var(--wia-surface-elevated);
  color: var(--wia-gold);
  border: 1px solid var(--wia-border-gold);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.wia-phase-canvas-wrap {
  width: 100%;
  aspect-ratio: 800 / 360;
  background: #090807;
  border: 1px solid var(--wia-border-faint);
  border-radius: var(--wia-radius-md);
  overflow: hidden;
  position: relative;
}

.wia-phase-svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* ─── C. Signature Phase Shift: Sequential Drawing & Core Pulse ────────── */
@keyframes lineDrawSeq {
  0% {
    stroke-dashoffset: 200;
    opacity: 0;
  }
  30% {
    opacity: 0.8;
  }
  100% {
    stroke-dashoffset: 0;
    opacity: 1;
  }
}

.phase-connectors.animate-lines .phase-line-seq {
  stroke-dasharray: 200;
  stroke-dashoffset: 200;
  animation: lineDrawSeq 0.72s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.phase-connectors.animate-lines .phase-line-1 { animation-delay: 0.04s; }
.phase-connectors.animate-lines .phase-line-2 { animation-delay: 0.10s; }
.phase-connectors.animate-lines .phase-line-3 { animation-delay: 0.16s; }
.phase-connectors.animate-lines .phase-line-4 { animation-delay: 0.22s; }
.phase-connectors.animate-lines .phase-line-5 { animation-delay: 0.28s; }
.phase-connectors.animate-lines .phase-line-6 { animation-delay: 0.34s; }
.phase-connectors.animate-lines .phase-line-7 { animation-delay: 0.40s; }
.phase-connectors.animate-lines .phase-line-8 { animation-delay: 0.46s; }
.phase-connectors.animate-lines .phase-line-9 { animation-delay: 0.52s; }
.phase-connectors.animate-lines .phase-line-10 { animation-delay: 0.58s; }

/* Cognitive Focal Core Breathing Aura */
@keyframes coreAuraPulse {
  0% {
    r: 13px;
    opacity: 0.45;
    stroke-width: 0.9px;
  }
  50% {
    r: 22px;
    opacity: 0.06;
    stroke-width: 0.4px;
  }
  100% {
    r: 13px;
    opacity: 0.45;
    stroke-width: 0.9px;
  }
}

.core-halo-pulse {
  transform-origin: center;
  animation: coreAuraPulse 4.2s ease-in-out infinite;
  pointer-events: none;
}

.pnode {
  transition: transform 0.3s ease;
}

.pnode:hover {
  filter: drop-shadow(0 0 6px var(--wia-gold));
}

.pnode text {
  font-family: var(--wia-font-mono);
  font-size: 11px;
  fill: var(--wia-text-secondary);
  pointer-events: none;
}

.pnode text.font-bold {
  font-weight: 600;
  fill: var(--wia-gold-bright);
}

.wia-phase-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--wia-border-faint);
  font-size: 0.82rem;
  color: var(--wia-text-secondary);
}

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

.legend-swatch {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.swatch-scattered {
  background: var(--wia-slate);
}

.swatch-connected {
  background: var(--wia-gold);
  box-shadow: 0 0 6px var(--wia-gold);
}

/* ─── 3. Section: What is Ātman Definition ────────────────────────────────── */
.wia-definition-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-bottom: 36px;
}

.wia-def-card {
  background: var(--wia-surface-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--wia-border-subtle);
  border-radius: var(--wia-radius-lg);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: border-color 0.25s ease, transform 0.25s var(--wia-ease-precise);
}

.wia-def-card:hover {
  border-color: var(--wia-border-gold);
  transform: translateY(-2px);
}

.wia-card-icon {
  font-size: 1.8rem;
  line-height: 1;
}

.wia-card-title {
  font-family: var(--wia-font-display);
  font-size: 1.40rem;
  font-weight: 600;
  color: var(--wia-text-primary);
  letter-spacing: -0.01em;
}

.wia-card-desc {
  font-size: 0.96rem;
  color: var(--wia-text-secondary);
  line-height: 1.6;
}

.wia-card-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 8px;
}

.wia-card-list li {
  font-size: 0.90rem;
  color: var(--wia-text-secondary);
  position: relative;
  padding-left: 20px;
  line-height: 1.5;
}

.wia-card-list li::before {
  content: '◈';
  position: absolute;
  left: 0;
  top: 0;
  font-size: 0.70rem;
  color: var(--wia-gold);
}

.wia-card-list li strong {
  color: var(--wia-text-primary);
}

/* Callout Banner */
.wia-stage-banner {
  background: rgba(30, 26, 20, 0.65);
  border: 1px solid var(--wia-border-gold);
  border-radius: var(--wia-radius-lg);
  padding: 24px 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.wia-banner-icon {
  font-size: 1.5rem;
  color: var(--wia-gold);
}

.wia-banner-text {
  flex: 1;
  min-width: 260px;
}

.wia-banner-text h4 {
  font-family: var(--wia-font-display);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--wia-gold-bright);
  margin-bottom: 4px;
}

.wia-banner-text p {
  font-size: 0.92rem;
  color: var(--wia-text-secondary);
  line-height: 1.5;
}

/* ─── 4. Section: Three Themes ───────────────────────────────────────────── */
.wia-themes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.wia-theme-card {
  background: var(--wia-surface-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--wia-border-subtle);
  border-radius: var(--wia-radius-lg);
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: transform 0.25s var(--wia-ease-precise), border-color 0.25s ease;
}

.wia-theme-card:hover {
  transform: translateY(-3px);
  border-color: var(--wia-border-gold);
}

.wia-theme-visual {
  height: 120px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(14, 13, 10, 0.6);
  border-radius: var(--wia-radius-md);
  border: 1px solid var(--wia-border-faint);
}

.wia-theme-tag {
  font-family: var(--wia-font-mono);
  font-size: 0.70rem;
  letter-spacing: 0.10em;
  color: var(--wia-gold);
  text-transform: uppercase;
}

.wia-theme-title {
  font-family: var(--wia-font-display);
  font-size: 1.35rem;
  font-weight: 600;
  color: var(--wia-text-primary);
  letter-spacing: -0.01em;
}

.wia-theme-prose {
  font-size: 0.92rem;
  color: var(--wia-text-secondary);
  line-height: 1.6;
}

.wia-theme-prose strong {
  color: var(--wia-text-primary);
}

.wia-theme-status {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--wia-border-faint);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--wia-text-tertiary);
  font-family: var(--wia-font-mono);
}

.status-indicator {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-indicator.live {
  background: #34D399;
  box-shadow: 0 0 6px #34D399;
}

.status-indicator.engineering {
  background: #FBBF24;
  box-shadow: 0 0 6px #FBBF24;
}

/* ─── 5. Section: Engineering Progression Ladder ─────────────────────────── */
.wia-ladder {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.wia-ladder-step {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 24px;
  background: var(--wia-surface-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--wia-border-subtle);
  border-radius: var(--wia-radius-lg);
  padding: 30px;
  position: relative;
  transition: border-color 0.25s ease;
}

.wia-ladder-step:hover {
  border-color: var(--wia-border-gold);
}

.ladder-col-index {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.ladder-num {
  font-family: var(--wia-font-mono);
  font-size: 1.30rem;
  font-weight: 600;
  color: var(--wia-gold);
}

.ladder-line {
  flex: 1;
  width: 1px;
  background: var(--wia-border-faint);
  margin-top: 10px;
}

.ladder-col-content {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.ladder-stage-badge {
  font-family: var(--wia-font-mono);
  font-size: 0.70rem;
  letter-spacing: 0.10em;
  color: var(--wia-text-tertiary);
  text-transform: uppercase;
}

.ladder-stage-badge.active {
  color: var(--wia-gold-bright);
}

.ladder-stage-badge.future {
  color: var(--wia-slate);
}

.ladder-stage-title {
  font-family: var(--wia-font-display);
  font-size: 1.30rem;
  font-weight: 600;
  color: var(--wia-text-primary);
}

.ladder-stage-desc {
  font-size: 0.95rem;
  color: var(--wia-text-secondary);
  line-height: 1.6;
}

.ladder-stage-evidence {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.evidence-tag {
  font-family: var(--wia-font-mono);
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: var(--wia-radius-pill);
  background: var(--wia-surface-inset);
  border: 1px solid var(--wia-border-faint);
  color: var(--wia-text-secondary);
}

.evidence-tag.live {
  background: var(--wia-gold-dim);
  border-color: var(--wia-gold-subtle);
  color: var(--wia-gold);
}

.evidence-tag.future {
  border-color: var(--wia-slate-dim);
  color: var(--wia-slate);
}

/* ─── 6. Section: Boundary Matrix ────────────────────────────────────────── */
.wia-table-scroll {
  display: block;
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--wia-border-subtle);
  border-radius: var(--wia-radius-lg);
  background: var(--wia-surface-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  box-sizing: border-box;
}

.wia-matrix-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.90rem;
  min-width: 680px;
}

.wia-matrix-table th,
.wia-matrix-table td {
  padding: 18px 20px;
  border-bottom: 1px solid var(--wia-border-faint);
  vertical-align: top;
}

.wia-matrix-table thead th {
  background: var(--wia-surface-inset);
  font-family: var(--wia-font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--wia-text-tertiary);
  border-bottom: 1px solid var(--wia-border-subtle);
}

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

.wia-matrix-table tbody tr:hover td,
.wia-matrix-table tbody tr:hover th {
  background: rgba(201, 178, 124, 0.02);
}

.th-dim { width: 22%; }
.th-beta { width: 26%; color: var(--wia-gold-bright) !important; }
.th-dev { width: 26%; }
.th-vision { width: 26%; }

.row-label {
  font-family: var(--wia-font-body);
  font-weight: 600;
  color: var(--wia-text-primary);
}

.badge-status {
  display: inline-block;
  font-family: var(--wia-font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 2px 7px;
  border-radius: var(--wia-radius-pill);
  margin-bottom: 6px;
  font-weight: 600;
}

.badge-status.live {
  background: rgba(52, 211, 153, 0.12);
  color: #34D399;
  border: 1px solid rgba(52, 211, 153, 0.25);
}

.badge-status.dev {
  background: rgba(251, 191, 36, 0.12);
  color: #FBBF24;
  border: 1px solid rgba(251, 191, 36, 0.25);
}

.badge-status.vision {
  background: rgba(127, 146, 166, 0.12);
  color: #7F92A6;
  border: 1px solid rgba(127, 146, 166, 0.25);
}

.wia-matrix-table code {
  font-family: var(--wia-font-mono);
  font-size: 0.82rem;
  background: var(--wia-surface-inset);
  padding: 1px 5px;
  border-radius: 4px;
  color: var(--wia-gold);
}

/* ─── 7. Section: Follow the Build ───────────────────────────────────────── */
.wia-channels-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.wia-channel-card {
  background: var(--wia-surface-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--wia-border-subtle);
  border-radius: var(--wia-radius-lg);
  padding: 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  text-decoration: none;
  color: var(--wia-text-primary);
  transition: transform 0.2s var(--wia-ease-precise), border-color 0.25s ease, box-shadow 0.2s ease;
  position: relative;
}

.wia-channel-card:hover {
  transform: translateY(-2px);
  border-color: var(--wia-border-gold);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.channel-icon-wrap {
  width: 44px;
  height: 44px;
  border-radius: var(--wia-radius-md);
  background: var(--wia-surface-inset);
  border: 1px solid var(--wia-border-faint);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--wia-gold);
  flex-shrink: 0;
}

.channel-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.channel-name {
  font-family: var(--wia-font-display);
  font-size: 1.10rem;
  font-weight: 600;
  color: var(--wia-text-primary);
}

.channel-handle {
  font-family: var(--wia-font-mono);
  font-size: 0.76rem;
  color: var(--wia-gold);
}

.channel-desc {
  font-size: 0.86rem;
  color: var(--wia-text-secondary);
  line-height: 1.45;
  margin-top: 4px;
}

.channel-arrow {
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 1.1rem;
  color: var(--wia-text-tertiary);
  transition: transform 0.2s ease, color 0.2s ease;
}

.wia-channel-card:hover .channel-arrow {
  transform: translate(2px, -2px);
  color: var(--wia-gold);
}

/* ─── 8. Section: Closing ────────────────────────────────────────────────── */
.wia-closing-section {
  padding: 110px 0;
  text-align: center;
  background: radial-gradient(circle at 50% 50%, rgba(201, 178, 124, 0.08) 0%, transparent 65%);
}

.wia-closing-wrap {
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.wia-closing-emblem img {
  filter: drop-shadow(0 4px 18px rgba(201, 178, 124, 0.35));
}

.wia-closing-title {
  font-family: var(--wia-font-display);
  font-size: clamp(2.0rem, 1.6rem + 1.8vw, 3.0rem);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.wia-closing-prose {
  font-size: 1.05rem;
  color: var(--wia-text-secondary);
  line-height: 1.65;
}

.wia-closing-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 14px;
}

/* ─── Responsive Matrix ──────────────────────────────────────────────────── */
@media (max-width: 992px) {
  .wia-hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .wia-canvas-container {
    max-width: 420px;
  }

  .wia-themes-grid {
    grid-template-columns: 1fr;
  }

  .wia-split-prose {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}

@media (max-width: 768px) {
  .floating-pill-nav {
    width: 100% !important;
    max-width: 100% !important;
    left: 0 !important;
    transform: none !important;
    padding: 0 16px !important;
    box-sizing: border-box !important;
  }

  .fpn-center {
    display: none !important;
  }

  .fpn-left {
    margin-right: 0.5rem !important;
  }

  .fpn-cta {
    padding: 6px 12px !important;
    font-size: 0.75rem !important;
  }

  .wia-section {
    padding: 64px 0;
  }

  .wia-hero-section {
    padding-top: 110px;
    padding-bottom: 64px;
  }

  .wia-definition-grid {
    grid-template-columns: 1fr;
  }

  .wia-stage-banner {
    flex-direction: column;
    align-items: flex-start;
  }

  .wia-banner-action {
    width: 100%;
  }

  .wia-banner-action .wia-btn-secondary {
    width: 100%;
  }

  .wia-ladder-step {
    grid-template-columns: 44px 1fr;
    padding: 22px 18px;
    gap: 16px;
  }

  .ladder-num {
    font-size: 1.10rem;
  }

  .ladder-stage-title {
    font-size: 1.15rem;
  }
}

@media (max-width: 480px) {
  :root {
    --wia-control-height: 50px;
  }

  .floating-pill-nav {
    padding: 0 10px !important;
    height: 60px !important;
    top: 10px !important;
  }

  .fpn-logo {
    height: 12px !important;
  }

  .theme-switch {
    width: 46px !important;
    height: 28px !important;
  }

  .fpn-cta {
    padding: 5px 8px !important;
    font-size: 0.70rem !important;
  }

  .wia-container {
    padding: 0 16px;
  }

  .wia-actions-group {
    flex-direction: column;
    width: 100%;
  }

  .wia-btn-primary,
  .wia-btn-secondary,
  .wia-btn-ghost {
    width: 100%;
  }

  .wia-phase-shift-card {
    padding: 20px 16px;
  }

  .wia-phase-controls {
    width: 100%;
  }

  .wia-phase-btn {
    flex: 1;
    font-size: 0.72rem;
    padding: 0 8px;
  }

  .wia-closing-actions {
    flex-direction: column;
    width: 100%;
  }
}

/* Small Mobile (320px - 360px) */
@media (max-width: 360px) {
  .wia-hero-title {
    font-size: 1.85rem;
  }

  .wia-section-title {
    font-size: 1.60rem;
  }

  .wia-def-card,
  .wia-prose-block,
  .wia-theme-card {
    padding: 22px 16px;
  }
}

/* ─── Reduced Motion Strict Override (WCAG 2.2 AAA / SC 2.3.3) ──────────── */
@media (prefers-reduced-motion: reduce) {
  *:not(.dev-ticker-vertical):not(.dev-ticker-vtrack):not(.dev-ticker-vitem),
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .wia-badge-wrap,
  .wia-hero-title,
  .wia-lead-paragraph,
  .wia-body-paragraph,
  .wia-actions-group,
  .wia-hero-meta,
  .wia-hero-visual {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
  }

  .wia-reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .phase-connectors.animate-lines .phase-line-seq {
    stroke-dasharray: none !important;
    stroke-dashoffset: 0 !important;
    animation: none !important;
    opacity: 1 !important;
  }

  .core-halo-pulse {
    animation: none !important;
    r: 16px !important;
    opacity: 0.25 !important;
  }

  .wia-canvas {
    display: none !important;
  }

  .wia-svg-fallback {
    display: block !important;
  }
}