/* ==================================================
   GLOBAL DESIGN TOKENS & EDITORIAL SYSTEM
   Pronab Chakraborty Portfolio — Creative Engineering
   ================================================== */

:root {
  /* 1. Global Color System: Graphite + Cream */
  --bg: #080A0C;
  --bg-deep: #040507;
  --surface: #0E131A;

  --text: #EFEEE9;
  --text-dim: #D4D3CC;
  --muted: #8E9189;
  --muted-dark: #50544C;
  --border: rgba(239, 238, 233, 0.08);
  --border-light: rgba(239, 238, 233, 0.05);
  --divider: rgba(239, 238, 233, 0.08);

  --accent: #79C7FF;
  --accent-soft: rgba(121, 199, 255, 0.08);

  /* 2. Editorial Typography System */
  --font-display: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --font-micro: 11px;

  /* 3. Global Fluid Spacing Tokens */

  --space-sm: clamp(8px, 1vw, 16px);
  --space-md: clamp(16px, 2vw, 32px);
  --space-lg: clamp(32px, 3.5vw, 56px);

  --max-w: 1280px;
  --gutter: clamp(20px, 4vw, 48px);

  /* 4. Motion Tokens */

  --transition-fast: 150ms ease;

}

/* Base Reset & Core Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* Accessibility Screen Reader Only Utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Standardized Chapter Label System */
.chapter-meta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: var(--space-md);
  user-select: none;
}

.chapter-number {
  font-family: var(--font-mono);
  font-size: var(--font-micro);
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.chapter-tag {
  font-family: var(--font-mono);
  font-size: var(--font-micro);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.chapter-divider-line {
  display: inline-block;
  width: 40px;
  height: 1px;
  background: var(--divider);
}

/* Lightweight Editorial Alignment Grid */
.editorial-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-md);
}

@media (max-width: 1024px) {
  .editorial-grid {
    grid-template-columns: repeat(8, 1fr);
  }
}

@media (max-width: 640px) {
  .editorial-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

html {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  width: 100%;
}

/* Lenis Recommended CSS */
html.lenis, html.lenis body {
  height: auto;
}

.lenis.lenis-smooth {
  scroll-behavior: auto !important;
}

.lenis.lenis-smooth [data-lenis-prevent] {
  overscroll-behavior: contain;
}

.lenis.lenis-stopped {
  overflow: hidden;
}

.lenis.lenis-scrolling iframe {
  pointer-events: none;
}

/* Preloader Curtain */
.preloader-curtain {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: #05070A;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preloader-inner {
  text-align: center;
  max-width: 380px;
  width: 90%;
  padding: 24px;
}

.preloader-brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}

.preloader-brand img,
.preloader-logo {
  width: 48px;
  height: 48px;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border-radius: 8px;
  filter: drop-shadow(0 4px 16px rgba(139, 92, 246, 0.4));
}

.preloader-brand-text {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.15em;
  color: var(--text-dim);
}

.preloader-number {
  font-size: clamp(48px, 12vw, 84px);
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--text);
  line-height: 1;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.preloader-bar-track {
  width: 100%;
  height: 2px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
  margin-bottom: 16px;
  border-radius: 2px;
}

.preloader-bar-fill {
  width: 100%;
  height: 100%;
  background: var(--accent);
  transform-origin: left;
  transform: scaleX(0);
}

.preloader-status {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
}

/* Custom Interactive Cursor */
.custom-cursor-wrap {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: 10000;
  opacity: 0;
  transition: opacity 250ms ease;
}

.custom-cursor-wrap.is-active {
  opacity: 1;
}

.cursor-dot {
  position: absolute;
  top: -3px;
  left: -3px;
  width: 6px;
  height: 6px;
  background: var(--text);
  border-radius: 50%;
  will-change: transform;
}

.cursor-ring {
  position: absolute;
  top: -20px;
  left: -20px;
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: width 250ms ease, height 250ms ease, background-color 250ms ease, border-color 250ms ease;
  will-change: transform;
}

.cursor-label {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: #FFFFFF;
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 200ms ease, transform 200ms ease;
}

/* Cursor Context Modes */
.custom-cursor-wrap[data-cursor-mode="view"] .cursor-ring,
.custom-cursor-wrap[data-cursor-mode="drag"] .cursor-ring,
.custom-cursor-wrap[data-cursor-mode="explore"] .cursor-ring,
.custom-cursor-wrap[data-cursor-mode="run"] .cursor-ring {
  width: 72px;
  height: 72px;
  top: -36px;
  left: -36px;
  background: rgba(8, 11, 16, 0.85);
  border-color: var(--accent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.custom-cursor-wrap[data-cursor-mode="view"] .cursor-label,
.custom-cursor-wrap[data-cursor-mode="drag"] .cursor-label,
.custom-cursor-wrap[data-cursor-mode="explore"] .cursor-label,
.custom-cursor-wrap[data-cursor-mode="run"] .cursor-label {
  opacity: 1;
  transform: scale(1);
}

.custom-cursor-wrap[data-cursor-mode="action"] .cursor-ring {
  width: 52px;
  height: 52px;
  top: -26px;
  left: -26px;
  border-color: rgba(255, 255, 255, 0.8);
}

/* Global Top Scroll Indicator */
.global-scroll-indicator {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  transform-origin: left;
  transform: scaleX(0);
  z-index: 1000;
  pointer-events: none;
}

/* Accessible Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--text);
  color: var(--bg);
  padding: 10px 18px;
  font-weight: 600;
  z-index: 10001;
  border-radius: 4px;
  transition: top 200ms ease;
  text-decoration: none;
}
.skip-link:focus {
  top: 20px;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* Magnetic Target Smoothness */
.magnetic-target {
  display: inline-block;
  will-change: transform;
  transition: transform 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* Kinetic Velocity Targets */
.kinetic-velocity-target {
  will-change: transform;
}

/* Desktop Side Rail */
.side-rail {
  position: fixed;
  left: 28px;
  bottom: 40px;
  z-index: 90;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.side-rail-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}

.side-rail-links a {
  color: var(--muted);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  transition: color var(--transition-fast);
}

.side-rail-links a:hover {
  color: var(--text);
}

.side-rail-line {
  width: 1px;
  height: 48px;
  background: rgba(255, 255, 255, 0.15);
}

/* Floating Site Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 18px 0;
  background: rgba(8, 11, 16, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text);
}

.brand-mark {
  display: block;
  width: 32px;
  height: 32px;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border-radius: 6px;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.5));
  transition: transform var(--transition-fast, 0.2s ease), filter var(--transition-fast, 0.2s ease);
}

.brand-link:hover .brand-mark {
  transform: scale(1.08);
  filter: drop-shadow(0 4px 14px rgba(139, 92, 246, 0.55));
}

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

.brand-name {
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.brand-system-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.08em;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.desktop-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.desktop-nav a:hover,
.desktop-nav a.active {
  color: var(--text);
}

.mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-light);
  color: var(--text);
  padding: 8px 16px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
}

/* Mobile Drawer Menu */
.mobile-drawer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: var(--bg-deep);
  z-index: 99;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 40px var(--gutter);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-12px);
  transition: opacity 280ms ease, transform 280ms ease;
}

.mobile-drawer.is-open {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 40px;
}

.mobile-nav-link {
  color: var(--text);
  text-decoration: none;
  font-size: clamp(28px, 8vw, 42px);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.mobile-drawer-socials {
  display: flex;
  gap: 24px;
}

.mobile-drawer-socials a {
  color: var(--muted);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
}

/* 01. HERO EDITORIAL STAGE */
.hero-pinned-wrapper {
  position: relative;
  width: 100%;
}

.hero-scene {
  position: relative;
  width: 100%;
  height: 100vh;
  height: 100dvh;
  min-height: 640px;
  overflow: hidden;
  background-color: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Layer 1: Background Image / Atmosphere */
.hero-ambient-stage {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}

.hero-ambient-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.35;
  filter: grayscale(60%) contrast(1.15) brightness(0.7);
  will-change: transform, opacity;
}

.hero-atmosphere-vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(8, 11, 16, 0.25) 0%, rgba(8, 11, 16, 0.85) 75%, rgba(8, 11, 16, 0.98) 100%);
  pointer-events: none;
}

/* Layer 2: Giant Moving Name Typography (Behind Subject) */
.hero-typography-stage {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-monumental-wrap {
  width: 100%;
  max-width: 100vw;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  user-select: none;
}

.hero-monumental-line {
  font-family: var(--font-display);
  font-size: clamp(48px, 9.8vw, 142px);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  color: var(--text);
  white-space: nowrap;
  display: flex;
  align-items: center;
  justify-content: center;
  will-change: transform, opacity;
}

.hero-line-pronab {
  align-self: center;
  margin: 0;
}

.hero-line-chakraborty {
  align-self: center;
  margin: 0;
}

.hero-name-token {
  display: inline-block;
}

.hero-name-dash {
  font-weight: 300;
  opacity: 0.35;
  margin-right: 0.15em;
  color: var(--muted);
}

/* Layer 3: Foreground Subject Cutout (Typography visually travels behind him) */
.hero-subject-stage {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 3;
  pointer-events: none;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  overflow: hidden;
}

.hero-subject-wrap {
  position: relative;
  height: clamp(420px, 72vh, 620px);
  max-height: 85vh;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  will-change: transform, opacity;
}

.hero-subject-cutout {
  height: 100%;
  max-height: 100%;
  width: auto;
  object-fit: contain;
  object-position: bottom center;
  display: block;
  filter: contrast(1.04) brightness(0.98);
  pointer-events: auto;
}

/* Layer 4: Minimal Navigation + Plain Editorial Metadata */
.hero-editorial-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 4;
  pointer-events: none;
  padding: clamp(24px, 4vw, 56px);
  padding-left: clamp(48px, 6vw, 92px);
  padding-right: clamp(32px, 5vw, 72px);
  padding-top: clamp(88px, 11vh, 112px);
  padding-bottom: clamp(28px, 4.5vh, 52px);
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto 1fr;
  justify-content: space-between;
  align-content: space-between;
}

.hero-meta-block {
  pointer-events: auto;
  will-change: transform, opacity;
}

.hero-meta-top-left {
  grid-column: 1;
  grid-row: 1;
  align-self: start;
  justify-self: start;
  text-align: left;
}

.hero-meta-top-right {
  grid-column: 2;
  grid-row: 1;
  align-self: start;
  justify-self: end;
  text-align: right;
}

.hero-meta-bottom-left {
  grid-column: 1;
  grid-row: 2;
  align-self: end;
  justify-self: start;
  text-align: left;
}

.hero-meta-bottom-right {
  grid-column: 2;
  grid-row: 2;
  align-self: end;
  justify-self: end;
  text-align: right;
}

.hero-meta-title {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text);
  display: block;
  margin-bottom: 4px;
}

.hero-meta-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  display: block;
}

.scroll-prompt-indicator {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.scroll-prompt-line {
  width: 40px;
  height: 1px;
  background: var(--muted);
  animation: promptPulse 2s infinite ease-in-out;
}

@keyframes promptPulse {
  0%, 100% { opacity: 0.3; transform: scaleX(0.7); transform-origin: left; }
  50% { opacity: 1; transform: scaleX(1); transform-origin: left; }
}

/* LAYER 5: 02 / POSITION CHAPTER (Scroll-revealed through Identity negative space) */
.hero-position-stage {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 5;
  pointer-events: none;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
}

.position-content-container {
  width: 100%;
  max-width: 1100px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}

.position-meta-row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
  will-change: transform, opacity;
}

.position-chapter-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
}

.position-meta-line {
  width: 48px;
  height: 1px;
  background: rgba(255, 255, 255, 0.2);
}

.position-headline-wrap {
  width: 100%;
  margin-bottom: 32px;
}

.position-monumental-headline {
  font-family: var(--font-display);
  font-size: clamp(32px, 5.4vw, 72px);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -0.035em;
  text-transform: uppercase;
  color: var(--text);
  margin: 0;
  display: flex;
  flex-direction: column;
}

.position-line {
  display: block;
  will-change: transform, opacity;
}

.position-line-highlight {
  color: var(--text);
  opacity: 0.95;
}

.position-body-wrap {
  display: flex;
  flex-direction: column;
  gap: 18px;
  max-width: 720px;
}

.position-manifesto-text {
  font-family: var(--font-body);
  font-size: clamp(16px, 1.8vw, 24px);
  font-weight: 400;
  line-height: 1.48;
  color: var(--text-dim);
  letter-spacing: -0.015em;
  margin: 0;
  will-change: transform, opacity;
}

.position-punchline-text {
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 26px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--text);
  letter-spacing: -0.02em;
  margin: 0;
  will-change: transform, opacity;
}

/* ==================================================
   CHAPTER 03 / LIVE SYSTEM STYLING
   ================================================== */
.live-system-pinned-wrapper {
  position: relative;
  width: 100%;
  background-color: var(--bg);
  z-index: 3;
}

.live-system-section {
  position: relative;
  width: 100%;
  min-height: 100vh;
  padding: clamp(48px, 6.5vh, 88px) 0;
  background-color: var(--bg);
  display: flex;
  align-items: center;
  border-top: 1px solid var(--border);
  overflow: hidden;
}

.live-system-container {
  width: 100%;
  display: flex;
  flex-direction: column;
}

.live-system-header {
  margin-bottom: var(--space-md);
  max-width: 960px;
}

.live-system-monumental-headline {
  font-family: var(--font-display);
  font-size: clamp(34px, 6.2vw, 84px);
  font-weight: 900;
  line-height: 0.98;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: var(--space-md);
  display: flex;
  flex-direction: column;
}

.live-headline-accent {
  color: var(--text);
  opacity: 0.92;
}

.live-system-lead {
  font-family: var(--font-body);
  font-size: clamp(15px, 1.4vw, 19px);
  line-height: 1.55;
  color: var(--text-dim);
  max-width: 640px;
  letter-spacing: -0.01em;
}

/* Instruments Layout */
.live-system-instruments {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  width: 100%;
}

/* Dominant Scroll Velocity Meter */
.instrument-velocity-card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: clamp(14px, 2vw, 24px);
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
}

.instrument-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.instrument-label {
  font-family: var(--font-mono);
  font-size: var(--font-micro);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
}

.instrument-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-soft);
  padding: 3px 8px;
  border-radius: 2px;
}

.instrument-value-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.instrument-value-hero {
  font-family: var(--font-mono);
  font-size: clamp(34px, 5.2vw, 56px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--text);
}

.instrument-value {
  font-family: var(--font-mono);
  font-size: clamp(17px, 2vw, 24px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--text);
}

.instrument-unit {
  font-family: var(--font-mono);
  font-size: var(--font-micro);
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.instrument-bar-track {
  width: 100%;
  height: 3px;
  background: rgba(239, 238, 233, 0.06);
  overflow: hidden;
  margin-top: 6px;
  position: relative;
}

.instrument-bar-fill {
  height: 100%;
  width: 100%;
  background: var(--accent);
  transform-origin: center;
  transform: scaleX(0.04);
  transition: transform 120ms ease-out;
}

/* Secondary Instruments Grid (Technical Instruments Panel) */
.instruments-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  width: 100%;
}

.instrument-card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: clamp(12px, 1.6vw, 18px);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.instrument-sub {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--muted-dark);
  text-transform: uppercase;
}

/* Event Stream Block */
.live-system-stream-block {
  background: var(--bg-deep);
  border: 1px solid var(--border);
  padding: clamp(14px, 1.8vw, 22px);
  margin-bottom: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.stream-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
}

.stream-status {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

@keyframes pulseDotAnim {
  0%, 100% { opacity: 0.3; transform: scale(0.8); }
  50% { opacity: 1; transform: scale(1.1); }
}

.stream-console {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 120px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.stream-event-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 4px 0;
  border-bottom: 1px solid rgba(239, 238, 233, 0.03);
  transition: opacity 200ms ease;
}

.stream-time {
  color: var(--muted);
  font-size: 11px;
}

.stream-tag {
  color: var(--accent);
  font-weight: 600;
  font-size: 11px;
}

.stream-msg {
  color: var(--text);
}

/* Phase 5: Resolve Bridge */
.live-system-resolve-bridge {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border);
  padding-top: var(--space-lg);
  width: 100%;
}

.resolve-line {
  display: flex;
  align-items: center;
  gap: 12px;
}

.resolve-tag {
  font-family: var(--font-mono);
  font-size: var(--font-micro);
  letter-spacing: 0.16em;
  color: var(--muted);
}

.resolve-status {
  font-family: var(--font-display);
  font-size: clamp(16px, 1.6vw, 22px);
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--text);
  text-transform: uppercase;
}

.resolve-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text);
  border-bottom: 1px solid var(--text);
  padding-bottom: 4px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.resolve-link:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.resolve-arrow {
  font-size: 14px;
  transition: transform var(--transition-fast);
}

.resolve-link:hover .resolve-arrow {
  transform: translate(2px, 2px);
}

/* Responsive */
@media (max-width: 1024px) {
  .instruments-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .instruments-grid {
    grid-template-columns: 1fr;
  }
  .live-system-resolve-bridge {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .stream-event-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
}

/* 02. EDITORIAL ABOUT & KINETIC TYPOGRAPHY */
/* 13. EDITORIAL ABOUT & HUMAN RESOLUTION */
.person-section {
  padding: clamp(80px, 12vh, 140px) 0;
  position: relative;
  z-index: 2;
  background-color: var(--bg);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.about-container {
  max-width: 1360px;
  margin: 0 auto;
}

.about-story-block {
  margin-top: 24px;
  margin-bottom: clamp(48px, 7vw, 84px);
  max-width: 980px;
}

.about-quiet-headline {
  font-family: var(--font-display);
  font-size: clamp(34px, 5.2vw, 72px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-top: 16px;
}

.section-meta-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  display: block;
}

.person-editorial-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(40px, 7vw, 92px);
  align-items: start;
}

.person-photo-frame {
  position: relative;
  overflow: hidden;
  border-radius: 2px;
  background: #020305;
  aspect-ratio: 1 / 1;
  max-width: 520px;
  width: 100%;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.person-portrait-img {
  width: 100%;
  height: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  display: block;
  filter: contrast(1.02);
  will-change: transform;
}

.person-editorial-copy {
  display: flex;
  flex-direction: column;
}

.person-name-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: 10px;
  margin-bottom: 6px;
  color: var(--text);
}

.person-ethos-line {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--accent);
  margin-bottom: 24px;
  text-transform: uppercase;
}

.person-narrative-text {
  font-family: var(--font-sans);
  font-size: clamp(15px, 1.4vw, 17px);
  color: var(--text-dim);
  line-height: 1.7;
  margin-bottom: 20px;
}

.about-plain-metadata {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.about-meta-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  padding-bottom: 8px;
}

.about-meta-row .meta-label {
  color: var(--muted);
  letter-spacing: 0.12em;
  font-size: 11px;
  text-transform: uppercase;
}

.about-meta-row .meta-val {
  color: var(--text);
  font-weight: 600;
  letter-spacing: 0.05em;
}

.meta-val {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

/* ==========================================================================
   04. SELECTED WORK — IMMERSIVE PROJECT ENVIRONMENTS
   ========================================================================== */

.work-pinned-container {
  position: relative;
  width: 100%;
  background-color: var(--bg);
  z-index: 4;
}

.systems-section {
  position: relative;
  width: 100%;
  background-color: var(--bg);
}

/* Desktop Pinned Environments Track */
@media (min-width: 900px) {
  .work-pinned-container {
    height: 100vh;
    overflow: hidden;
  }

  .environments-track-viewport {
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    position: relative;
  }

  .environments-master-track {
    display: flex;
    flex-direction: row;
    width: 500vw;
    height: 100vh;
    will-change: transform;
  }

  .project-environment {
    width: 100vw;
    height: 100vh;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: clamp(40px, 6vh, 60px) max(var(--gutter), calc((100vw - var(--max-w)) / 2 + var(--gutter)));
    box-sizing: border-box;
    overflow: hidden;
  }
}

/* Mobile Vertical Flow */
@media (max-width: 899px) {
  .work-pinned-container {
    height: auto;
    overflow-x: clip;
    padding: clamp(60px, 10vw, 90px) 0;
  }

  .environments-track-viewport {
    width: 100%;
    overflow: hidden;
  }

  .environments-master-track {
    display: flex;
    flex-direction: column;
    width: 100%;
    gap: clamp(70px, 12vw, 100px);
    overflow: hidden;
  }

  .project-environment {
    width: 100%;
    min-height: auto;
    padding: 0 var(--gutter);
    box-sizing: border-box;
    overflow: hidden;
    scroll-margin-top: 80px;
  }

  .env-intro {
    padding-top: clamp(60px, 10vh, 90px);
  }
}

/* Subtle Environmental Graphite Shifts */
.env-intro {
  background-color: var(--bg);
}

.env-nexus {
  background-color: #06090D;
}

.env-pet {
  background-color: #090B08;
}

.env-growth {
  background-color: #070A0B;
}

.env-resolution {
  background-color: var(--bg);
}

/* Restrained Spatial Indicator (Desktop Only) */
.systems-spatial-indicator {
  position: absolute;
  top: clamp(20px, 3vh, 32px);
  right: max(var(--gutter), calc((100vw - var(--max-w)) / 2 + var(--gutter)));
  z-index: 20;
  pointer-events: none;
}

@media (max-width: 899px) {
  .systems-spatial-indicator {
    display: none;
  }
}

.spatial-ind-track {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted-dark);
}

.spatial-ind-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  opacity: 0.4;
  transition: opacity var(--transition-normal), color var(--transition-normal);
}

.spatial-ind-item.is-active {
  opacity: 1;
  color: var(--cream);
}

.spatial-ind-num {
  font-weight: 700;
  color: var(--accent);
}

.ind-item-2 .spatial-ind-num {
  color: #A3C9A8;
}

.ind-item-3 .spatial-ind-num {
  color: #E2B170;
}

.spatial-ind-divider {
  color: var(--border-subtle);
}

/* Inner Environment Container */
.env-inner-container {
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
  box-sizing: border-box;
  position: relative;
}

/* --------------------------------------------------------------------------
   STAGE 0: INTRO ENVIRONMENT (.env-intro)
   -------------------------------------------------------------------------- */
.intro-pre-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 12px;
  text-transform: uppercase;
}

.intro-monumental-block {
  margin-bottom: clamp(32px, 5vh, 48px);
  max-width: 800px;
}

.intro-monumental-title {
  font-size: clamp(38px, 6.2vw, 80px);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--cream);
  margin-bottom: 18px;
  display: flex;
  flex-direction: column;
}

.intro-statement-lead {
  font-size: clamp(15px, 1.25vw, 18px);
  color: var(--muted);
  line-height: 1.6;
  max-width: 620px;
}

/* Minimal 3-System Index */
.intro-systems-index {
  display: flex;
  flex-direction: column;
  max-width: 680px;
  border-top: 1px solid var(--border-subtle);
  margin-bottom: clamp(24px, 4vh, 36px);
}

.index-row {
  display: grid;
  grid-template-columns: 44px 1.4fr 1.2fr 30px;
  align-items: center;
  padding: clamp(12px, 1.8vh, 18px) 0;
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  transition: background-color var(--transition-fast);
}

.index-row-num {
  font-weight: 700;
  color: var(--accent);
}

.index-row-2 .index-row-num {
  color: #A3C9A8;
}

.index-row-3 .index-row-num {
  color: #E2B170;
}

.index-row-name {
  color: var(--cream);
  font-weight: 600;
  font-size: 13px;
}

.index-row-type {
  color: var(--muted);
  font-size: 11px;
}

.index-row-arrow {
  color: var(--muted-dark);
  text-align: right;
  transition: transform var(--transition-fast), color var(--transition-fast);
}

.index-row:hover .index-row-arrow {
  color: var(--cream);
  transform: translate(2px, 2px);
}

.intro-scroll-hint {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--muted-dark);
}

@media (max-width: 640px) {
  .index-row {
    grid-template-columns: 36px 1fr 24px;
  }
  .index-row-type {
    display: none;
  }
}

/* --------------------------------------------------------------------------
   SHARED PROJECT ENVIRONMENT HEADERS & STRUCTURE
   -------------------------------------------------------------------------- */
.project-env-header {
  margin-bottom: clamp(20px, 3vh, 32px);
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: clamp(16px, 3vw, 40px);
  align-items: end;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: clamp(16px, 2.5vh, 24px);
}

@media (max-width: 899px) {
  .project-env-header {
    grid-template-columns: 1fr;
    gap: 16px;
    align-items: start;
  }
}

.project-identity-lockup {
  display: flex;
  align-items: baseline;
  gap: clamp(14px, 2.5vw, 24px);
}

.project-giant-num {
  font-family: var(--font-display);
  font-size: clamp(52px, 7vw, 92px);
  font-weight: 800;
  line-height: 0.8;
  letter-spacing: -0.04em;
  color: var(--surface-light);
  user-select: none;
}

.project-env-title {
  font-size: clamp(26px, 3.6vw, 48px);
  font-weight: 700;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--cream);
  margin-bottom: 4px;
}

.project-env-tagline {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
}

.project-editorial-meta {
  display: flex;
  gap: clamp(16px, 2.5vw, 32px);
}

@media (max-width: 640px) {
  .project-editorial-meta {
    flex-direction: column;
    gap: 8px;
  }
}

.meta-pair {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.meta-label {
  text-transform: uppercase;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  color: var(--muted-dark);
}

.meta-value {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cream);
  font-weight: 500;
}

/* Two-column system body on desktop, stack on mobile */
.project-system-body {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(24px, 3.5vw, 48px);
  align-items: start;
}

@media (max-width: 899px) {
  .project-system-body {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

.diagram-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-bottom: 12px;
  text-transform: uppercase;
}

/* --------------------------------------------------------------------------
   SYSTEM 01 — NEXUS WORLD ARCHITECTURE
   -------------------------------------------------------------------------- */
.arch-diagram-wrapper {
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  padding: clamp(16px, 2.5vw, 24px);
  position: relative;
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

.arch-flow-diagram {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  max-width: 100%;
}

.arch-node {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
  transition: border-color var(--transition-normal), background var(--transition-normal);
  min-width: 0;
  box-sizing: border-box;
  flex-wrap: wrap;
}

.arch-node.is-active {
  border-color: rgba(121, 199, 255, 0.4);
  background: rgba(121, 199, 255, 0.03);
}

.node-badge {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  padding: 2px 6px;
  border-radius: 2px;
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
}

.node-gateway .node-badge,
.node-bus .node-badge {
  color: var(--accent);
  background: rgba(121, 199, 255, 0.1);
}

.node-sub {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
  margin-left: auto;
}

.arch-connector {
  height: 14px;
  width: 1px;
  background: var(--border-subtle);
  margin: 0 auto;
  position: relative;
}

.conn-pulse {
  position: absolute;
  top: 0;
  left: -2px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  animation: archPulse 2s cubic-bezier(0.16, 1, 0.3, 1) infinite;
}

@keyframes archPulse {
  0% { transform: translateY(0); opacity: 0; }
  30% { opacity: 1; }
  100% { transform: translateY(14px); opacity: 0; }
}

.arch-connector-split {
  height: 12px;
  position: relative;
  width: 80%;
  margin: 0 auto;
}

.arch-connector-split .split-line {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--border-subtle);
}

.arch-connector-split .split-line.left { left: 16%; }
.arch-connector-split .split-line.center { left: 50%; }
.arch-connector-split .split-line.right { right: 16%; }

.arch-workers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

@media (max-width: 640px) {
  .arch-workers-grid {
    grid-template-columns: 1fr;
  }
}

.arch-worker-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color var(--transition-normal);
}

.arch-worker-card.is-active {
  border-color: rgba(121, 199, 255, 0.3);
}

.w-status {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.w-name {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--cream);
}

.w-task {
  font-size: 10px;
  color: var(--muted);
  line-height: 1.3;
}

/* Nexus Interactive Shell */
.proto-interaction-shell {
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  padding: clamp(16px, 2.5vw, 24px);
  position: relative;
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

.proto-shell-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 10px;
}

.shell-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.proto-shell-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cream);
  font-weight: 600;
}

.proto-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #4ADE80;
  display: inline-block;
}

.proto-status-pill {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--accent);
  background: rgba(121, 199, 255, 0.1);
  border: 1px solid rgba(121, 199, 255, 0.3);
  padding: 2px 6px;
  border-radius: 2px;
  letter-spacing: 0.08em;
}

.proto-arch-switches {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.proto-nexus-btn {
  flex: 1;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 8px 10px;
  border-radius: 3px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 40px;
  transition: all var(--transition-fast);
}

.btn-indicator {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--muted-dark);
  transition: background var(--transition-fast);
}

.proto-nexus-btn.is-active {
  background: rgba(121, 199, 255, 0.1);
  border-color: var(--accent);
  color: var(--cream);
}

.proto-nexus-btn.is-active .btn-indicator {
  background: var(--accent);
  box-shadow: 0 0 8px rgba(121, 199, 255, 0.6);
}

.proto-nexus-feed {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
  padding: 10px 12px;
  /* Reserve the feed capacity so new rows cannot move later chapters. */
  height: 120px;
  max-height: 120px;
  overflow-y: hidden;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  margin-bottom: 16px;
}

.proto-event-line {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  text-overflow: ellipsis;
  overflow: hidden;
  min-width: 0;
  max-width: 100%;
}

.proto-ev-time {
  color: var(--muted-dark);
  flex-shrink: 0;
}

.proto-ev-tag {
  color: var(--accent);
  background: rgba(121, 199, 255, 0.1);
  padding: 1px 4px;
  border-radius: 2px;
  font-size: 9px;
  flex-shrink: 0;
}

.proto-ev-text {
  color: var(--cream);
  opacity: 0.9;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.nexus-resolution-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-subtle);
  padding-top: 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.res-tag {
  color: var(--muted-dark);
}

.res-val {
  color: var(--cream);
  font-weight: 500;
}

/* Small Screen Overrides for System 01 */
@media (max-width: 480px) {
  .arch-node {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 8px 10px;
  }
  .node-sub {
    margin-left: 0;
    font-size: 9px;
    word-break: break-word;
  }
  .proto-arch-switches {
    flex-direction: column;
    gap: 6px;
  }
  .proto-nexus-btn {
    width: 100%;
    box-sizing: border-box;
  }
  .nexus-resolution-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
  .res-val {
    word-break: break-word;
  }
  .details-summary-btn {
    width: 100%;
    white-space: normal;
    box-sizing: border-box;
  }
  .diagram-tag {
    word-break: break-word;
    letter-spacing: 0.08em;
  }
}

/* --------------------------------------------------------------------------
   SYSTEM 02 — PET BOOKING SYSTEM JOURNEY
   -------------------------------------------------------------------------- */
.journey-flow-wrapper {
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  padding: clamp(16px, 2.5vw, 24px);
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

.journey-steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

@media (max-width: 640px) {
  .journey-steps-grid {
    grid-template-columns: 1fr;
  }
}

.journey-step-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color var(--transition-normal);
}

.journey-step-card.is-active {
  border-color: rgba(163, 201, 168, 0.4);
  background: rgba(163, 201, 168, 0.03);
}

.step-num-badge {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  color: #A3C9A8;
}

.step-title {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 600;
  color: var(--cream);
}

.step-desc {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.45;
}

.step-mini-visual {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 4px;
}

.mini-pill {
  font-family: var(--font-mono);
  font-size: 9px;
  padding: 3px 6px;
  border-radius: 2px;
  border: 1px solid var(--border-subtle);
  color: var(--muted);
}

.mini-pill.is-selected {
  border-color: #A3C9A8;
  color: var(--cream);
  background: rgba(163, 201, 168, 0.15);
}

.mini-pill.is-muted {
  opacity: 0.4;
}

.mini-slot {
  font-family: var(--font-mono);
  font-size: 9px;
  padding: 3px 6px;
  border-radius: 2px;
  border: 1px solid var(--border-subtle);
  color: var(--muted);
  display: inline-block;
  margin-right: 4px;
}

.mini-slot.is-selected {
  border-color: #A3C9A8;
  color: var(--cream);
  background: rgba(163, 201, 168, 0.15);
}

.automation-pipeline-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 4px;
}

.auto-item {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--cream);
  display: flex;
  align-items: center;
  gap: 6px;
}

.auto-check {
  color: #A3C9A8;
  font-weight: 700;
}

/* Pet Interactive Controls */
.pet-dot {
  background: #A3C9A8;
}

.proto-selected-service {
  font-family: var(--font-mono);
  font-size: 11px;
  color: #A3C9A8;
}

.proto-form-group {
  margin-bottom: 12px;
}

.control-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  color: var(--muted-dark);
  margin-bottom: 6px;
}

.proto-service-selector,
.proto-slot-selector {
  display: flex;
  gap: 6px;
}

@media (max-width: 480px) {
  .proto-service-selector,
  .proto-slot-selector {
    flex-direction: column;
  }
}

.proto-service-pill,
.proto-slot-pill {
  flex: 1;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 8px 10px;
  border-radius: 3px;
  cursor: pointer;
  min-height: 40px;
  transition: all var(--transition-fast);
}

.proto-service-pill.is-active,
.proto-slot-pill.is-active {
  background: rgba(163, 201, 168, 0.15);
  border-color: #A3C9A8;
  color: var(--cream);
}

.proto-book-btn {
  width: 100%;
  background: #A3C9A8;
  color: #06090D;
  border: none;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 10px 16px;
  border-radius: 3px;
  cursor: pointer;
  min-height: 42px;
  transition: background var(--transition-fast);
}

.proto-book-btn:hover {
  background: #B6DEBB;
}

.proto-confirm-banner {
  background: rgba(163, 201, 168, 0.12);
  border: 1px solid #A3C9A8;
  color: var(--cream);
  padding: 12px;
  border-radius: 3px;
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
}

.proto-confirm-check {
  background: #A3C9A8;
  color: #06090D;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  flex-shrink: 0;
}

.proto-confirm-msg {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.proto-confirm-msg span {
  font-size: 11px;
  color: var(--muted);
}

/* --------------------------------------------------------------------------
   SYSTEM 03 — LOCAL BUSINESS GROWTH OS LIFECYCLE
   -------------------------------------------------------------------------- */
.lifecycle-flow-wrapper {
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  padding: clamp(16px, 2.5vw, 24px);
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

.lead-lifecycle-card {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.lifecycle-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 12px;
}

.lead-core-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.lead-badge {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  color: #E2B170;
}

.lead-primary-name {
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  color: var(--cream);
}

.lead-primary-service {
  font-size: 12px;
  color: var(--muted);
}

.lead-score-pill {
  background: rgba(226, 177, 112, 0.12);
  border: 1px solid #E2B170;
  border-radius: 4px;
  padding: 6px 10px;
  text-align: right;
}

.score-num {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: #E2B170;
  display: block;
}

.score-sub {
  font-family: var(--font-mono);
  font-size: 8px;
  letter-spacing: 0.1em;
  color: var(--cream);
}

.lead-qualification-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

@media (max-width: 480px) {
  .lead-qualification-grid {
    grid-template-columns: 1fr;
  }
}

.qual-metric {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: 3px;
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.q-label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--muted-dark);
}

.q-val {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cream);
  font-weight: 600;
}

.q-val.is-routed {
  color: #E2B170;
}

.routing-channels-pipeline {
  border-top: 1px solid var(--border-subtle);
  padding-top: 12px;
}

.routing-title {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  color: var(--muted-dark);
  display: block;
  margin-bottom: 8px;
}

.channels-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

@media (max-width: 640px) {
  .channels-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 360px) {
  .channels-grid {
    grid-template-columns: 1fr;
  }
}

.channel-node {
  background: rgba(226, 177, 112, 0.08);
  border: 1px solid rgba(226, 177, 112, 0.3);
  border-radius: 3px;
  padding: 6px 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--cream);
  display: flex;
  align-items: center;
  gap: 4px;
}

.growth-dot {
  background: #E2B170;
}

.proto-sim-lead-btn {
  background: rgba(226, 177, 112, 0.15);
  border: 1px solid #E2B170;
  color: #E2B170;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  padding: 4px 10px;
  border-radius: 3px;
  cursor: pointer;
  min-height: 32px;
  transition: all var(--transition-fast);
}

.proto-sim-lead-btn:hover {
  background: #E2B170;
  color: #06090D;
}

.proto-leads-stream {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 100px;
  max-height: 150px;
  overflow: hidden;
  margin-bottom: 14px;
}

.proto-lead-card {
  background: rgba(255, 255, 255, 0.02);
  border-left: 2px solid #E2B170;
  border-top: 1px solid var(--border-subtle);
  border-right: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  border-radius: 0 3px 3px 0;
  padding: 8px 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.proto-lead-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.proto-lead-name {
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 12px;
  color: var(--cream);
}

.proto-lead-score {
  font-family: var(--font-mono);
  font-size: 10px;
  color: #E2B170;
  font-weight: 700;
}

.proto-lead-sub {
  font-size: 11px;
  color: var(--muted);
}

.proto-lead-action {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.06em;
  color: var(--cream);
  opacity: 0.8;
}

/* --------------------------------------------------------------------------
   STAGE 4: RESOLUTION ENVIRONMENT & BRIDGE TO PRINCIPLES (.env-resolution)
   -------------------------------------------------------------------------- */
.resolution-inner {
  text-align: center;
  align-items: center;
}

.resolution-content-box {
  max-width: 700px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.res-overhead {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-transform: uppercase;
}

.res-monumental-heading {
  font-size: clamp(40px, 6.8vw, 84px);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: -0.04em;
  color: var(--cream);
}

.res-subtext {
  font-size: clamp(15px, 1.25vw, 18px);
  color: var(--muted);
  line-height: 1.6;
  max-width: 580px;
  margin-bottom: 12px;
}

.res-bridge-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cream);
  text-decoration: none;
  border-bottom: 1px solid var(--cream);
  padding-bottom: 4px;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.res-bridge-link:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.res-arrow {
  display: inline-block;
  animation: bounceDown 1.8s infinite ease-in-out;
}

@keyframes bounceDown {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(4px); }
}

/* Accessible Project Details Disclosure */
.project-details-disclosure {
  margin-top: 14px;
}

.details-summary-btn {
  background: none;
  border: 1px solid var(--border-subtle);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  padding: 6px 12px;
  border-radius: 3px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.details-summary-btn:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--cream);
}

.project-details-body {
  margin-top: 10px;
  padding: 12px 14px;
  background: rgba(0, 0, 0, 0.3);
  border-left: 2px solid var(--accent);
  border-radius: 0 3px 3px 0;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.6;
}

/* 08. CHAPTER 08 / CORE PRINCIPLES (PRINTED MANIFESTO) */
.principles-manifesto-section {
  padding: clamp(80px, 12vh, 140px) 0;
  position: relative;
  background-color: var(--bg);
  z-index: 4;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.principles-layout-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(48px, 8vw, 100px);
  align-items: flex-start;
}

.principles-left-sticky {
  position: sticky;
  top: clamp(110px, 16vh, 150px);
}

.principles-monumental-manifesto {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: clamp(38px, 5.5vw, 72px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-top: 16px;
  margin-bottom: 32px;
}

.manifesto-word {
  display: block;
  color: var(--text-dim);
  opacity: 0.25;
  transform: translateX(-4px);
  transition: opacity 0.35s ease, color 0.35s ease, transform 0.35s ease;
}

.manifesto-word.is-active {
  color: var(--text);
  opacity: 1;
  transform: translateX(0);
}

.manifesto-word.is-quiet {
  color: var(--text-dim);
  opacity: 0.2;
}

.principles-progress-container {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 16px;
}

.principles-step-count {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 4px;
}

.step-current {
  color: var(--text);
  font-weight: 700;
}

.step-divider {
  color: rgba(255, 255, 255, 0.2);
}

.principles-progress-rail {
  width: 100px;
  height: 2px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
  position: relative;
}

.principles-progress-bar {
  width: 100%;
  height: 100%;
  background: var(--text);
  transform-origin: left;
  transform: scaleX(0.333);
  transition: transform 0.3s ease;
}

.principles-right-stages {
  display: flex;
  flex-direction: column;
  gap: clamp(36px, 5vw, 64px);
}

.principle-stage-card {
  padding: clamp(28px, 4vw, 44px);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: 4px;
  transition: opacity 0.35s ease, transform 0.35s ease, filter 0.35s ease;
}

.stage-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.stage-mobile-anchor {
  display: none;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text);
}

.stage-index {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text-dim);
  letter-spacing: 0.1em;
}

.stage-headline {
  font-size: clamp(22px, 2.5vw, 32px);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 14px;
  line-height: 1.2;
}

.stage-thought {
  font-size: clamp(14px, 1.1vw, 16px);
  color: var(--text-dim);
  line-height: 1.65;
  max-width: 52ch;
}

.stage-schematic {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin-top: 24px;
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 3px;
  max-width: 100%;
}

.schematic-arrow {
  color: rgba(255, 255, 255, 0.25);
}

/* Principles to Lab Exit Bridge */
.principles-exit-bridge {
  margin-top: clamp(64px, 10vh, 100px);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: clamp(40px, 6vh, 60px);
}

.exit-bridge-container {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.exit-bridge-pre {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  display: block;
  margin-bottom: 10px;
}

.exit-bridge-title {
  font-size: clamp(32px, 4.5vw, 56px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 20px;
}

.exit-bridge-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 12px 24px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 3px;
  color: var(--text);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  transition: all 0.25s ease;
}

.exit-bridge-link:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.exit-arrow {
  transition: transform 0.2s ease;
}

.exit-bridge-link:hover .exit-arrow {
  transform: translateY(3px);
}

/* 09. CHAPTER 09 / WORKING LAB (INTERACTIVE ALGORITHM LAB) */
.lab-section {
  padding: clamp(80px, 12vh, 140px) 0;
  position: relative;
  background-color: var(--bg);
  z-index: 5;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.lab-header-block {
  margin-bottom: clamp(32px, 5vw, 48px);
  max-width: 720px;
}

.lab-headline {
  font-size: clamp(38px, 5.5vw, 70px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-top: 16px;
  margin-bottom: 20px;
}

.lab-lead-copy {
  font-size: clamp(15px, 1.2vw, 17px);
  color: var(--text-dim);
  line-height: 1.65;
}

.lab-visual-stage {
  background: #0A0D12;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 6px;
  padding: clamp(20px, 3vw, 36px);
}

/* Real-Time Telemetry Bar */
.lab-telemetry-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.telemetry-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.telemetry-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
}

.telemetry-val {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.05em;
}

.status-val.is-ready {
  color: var(--text-dim);
}

.status-val.is-active,
.status-val.is-inspecting {
  color: #D8A657;
}

.status-val.is-settled {
  color: #79C7FF;
}

.status-val.is-solved {
  color: #5CB8FF;
  font-weight: 700;
}

.cost-val.is-solved {
  color: #5CB8FF;
}

/* Graph Viewport (Graph Owns The Viewport) */
.lab-graph-viewport {
  width: 100%;
  height: clamp(380px, 55vh, 560px);
  background: #07090D;
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.lab-graph-viewport svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* SVG Graph Elements */
.graph-edge {
  stroke: #202836;
  stroke-width: 2px;
  stroke-linecap: round;
  transition: stroke 0.25s ease, stroke-width 0.25s ease, opacity 0.25s ease;
}

.graph-edge.edge-evaluating {
  stroke: #D8A657;
  stroke-width: 3.5px;
}

.graph-edge.edge-settled {
  stroke: #79C7FF;
  stroke-width: 4px;
}

.graph-edge.edge-dimmed {
  opacity: 0.15;
}

.edge-weight-rect {
  fill: #0D1117;
  stroke: #202836;
  stroke-width: 1px;
}

.edge-weight-text {
  fill: #8E9AA8;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  text-anchor: middle;
  dominant-baseline: central;
}

.node-circle {
  fill: #111620;
  stroke: #2E3A4C;
  stroke-width: 2px;
  transition: fill 0.25s ease, stroke 0.25s ease, opacity 0.25s ease;
}

.node-circle.node-active {
  fill: #EFEEE9;
  stroke: #FFFFFF;
  stroke-width: 3px;
}

.node-circle.node-active + .node-label {
  color: var(--cream);
  letter-spacing: 0.06em;
  fill: #07090D;
  font-weight: 800;
}

.node-circle.node-settled {
  fill: #182536;
  stroke: #557A9E;
  stroke-width: 2.5px;
}

.graph-node.is-path-solved .node-circle {
  fill: #5CB8FF;
  stroke: #E0F2FE;
  stroke-width: 3.5px;
}

.graph-node.is-path-solved .node-label {
  color: var(--cream);
  letter-spacing: 0.06em;
  fill: #05101A;
  font-weight: 800;
}

.graph-node.is-dimmed {
  opacity: 0.25;
}

.graph-edge-group.is-dimmed {
  opacity: 0.15;
}

.node-label {
  color: var(--cream);
  letter-spacing: 0.06em;
  fill: #EFEEE9;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  text-anchor: middle;
  dominant-baseline: central;
  pointer-events: none;
}

.node-dist-badge {
  fill: #7E8C9D;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  text-anchor: middle;
  dominant-baseline: central;
  letter-spacing: 0.05em;
  pointer-events: none;
}

/* Solved Result Payoff Banner */
.lab-result-banner {
  background: rgba(121, 199, 255, 0.06);
  border: 1px solid rgba(121, 199, 255, 0.2);
  border-left: 4px solid #79C7FF;
  border-radius: 4px;
  padding: 20px 24px;
  margin-top: 20px;
  animation: fadeInPayoff 0.4s ease forwards;
}

@keyframes fadeInPayoff {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.result-payoff-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: #79C7FF;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.result-payoff-path {
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: 800;
  color: #FFFFFF;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.result-payoff-stats {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
}

.result-payoff-stats strong {
  color: var(--text);
}

.stat-divider {
  color: rgba(255, 255, 255, 0.2);
}

/* Restrained Minimal Controls Strip */
.lab-control-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.lab-primary-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.btn-lab-ctrl {
  min-height: 44px;
  padding: 10px 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-lab-ctrl:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.25);
}

.btn-lab-ctrl:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.btn-lab-start {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
  font-weight: 700;
}

.btn-lab-start:hover:not(:disabled) {
  background: #FFFFFF;
  border-color: #FFFFFF;
}

.btn-lab-start.is-running {
  background: rgba(216, 166, 87, 0.2);
  color: #D8A657;
  border-color: #D8A657;
}

.lab-speed-control {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-dim);
}

.speed-pill-group {
  display: inline-flex;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  overflow: hidden;
}

.btn-speed-option {
  min-height: 38px;
  min-width: 44px;
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.02);
  border: none;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 11px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-speed-option:last-child {
  border-right: none;
}

.btn-speed-option:hover {
  color: var(--text);
}

.btn-speed-option.is-active {
  background: rgba(255, 255, 255, 0.12);
  color: var(--text);
  font-weight: 700;
}

/* Secondary Details Drawer */
.lab-secondary-details {
  margin-top: 20px;
}

.lab-details-toggle {
  min-height: 44px;
  background: none;
  border: none;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  transition: color 0.2s ease;
}

.lab-details-toggle:hover {
  color: var(--text);
}

.toggle-arrow {
  transition: transform 0.2s ease;
}

.lab-details-drawer {
  display: none;
  margin-top: 16px;
}

.lab-details-drawer.is-open {
  display: block;
}

.lab-details-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.matrix-heading {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  margin-bottom: 10px;
  text-transform: uppercase;
}

.lab-matrix-panel,
.lab-trace-panel {
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 4px;
  padding: 16px;
  background: #06080C;
}

.lab-dist-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 12px;
}

.lab-dist-table th,
.lab-dist-table td {
  padding: 8px 10px;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.lab-dist-table th {
  color: var(--text-dim);
  font-weight: 500;
  font-size: 11px;
}

.status-cell-tag {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 2px;
  font-size: 10px;
  letter-spacing: 0.05em;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-dim);
}

.status-cell-tag.is-settled {
  background: rgba(121, 199, 255, 0.15);
  color: #79C7FF;
}

.status-cell-tag.is-evaluating {
  background: rgba(216, 166, 87, 0.15);
  color: #D8A657;
}

.lab-trace-stream {
  max-height: 200px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.algo-log-entry {
  line-height: 1.5;
  border-left: 2px solid transparent;
  padding-left: 6px;
}

.algo-log-entry.is-final-step {
  color: #79C7FF;
  border-left-color: #79C7FF;
  font-weight: 600;
}

/* Lab Exit Resolution Bridge */
.lab-exit-bridge {
  margin-top: clamp(64px, 10vh, 100px);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: clamp(40px, 6vh, 60px);
}

.lab-exit-container {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.lab-exit-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.15em;
  color: var(--text-dim);
  display: block;
  margin-bottom: 12px;
}

.lab-exit-statement {
  font-size: clamp(28px, 4vw, 50px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text);
  line-height: 1.15;
  margin-bottom: 24px;
}

.lab-exit-substatement {
  display: block;
  font-size: clamp(18px, 2.4vw, 30px);
  font-weight: 600;
  color: var(--text-dim);
  margin-top: 6px;
}

.lab-exit-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 12px 24px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 3px;
  color: var(--text);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  transition: all 0.25s ease;
}

.lab-exit-link:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.lab-exit-link:hover .exit-arrow {
  transform: translateY(3px);
}

/* -------------------------------------------------------------------------- */
/* 10. CHAPTER 10 — PERFORMANCE AS DESIGN                                     */
/* -------------------------------------------------------------------------- */
.performance-section {
  padding: clamp(80px, 12vh, 140px) 0;
  position: relative;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  background: var(--bg);
}

.performance-monumental-stage {
  max-width: 1040px;
  margin-bottom: clamp(48px, 8vh, 80px);
}

.performance-monumental-headline {
  font-family: var(--font-display);
  font-size: clamp(38px, 7.8vw, 84px);
  font-weight: 800;
  line-height: 0.96;
  letter-spacing: -0.04em;
  color: var(--text);
  margin-bottom: 24px;
}

.performance-lead-statement {
  font-family: var(--font-sans);
  font-size: clamp(16px, 1.8vw, 22px);
  line-height: 1.5;
  color: var(--muted);
  max-width: 680px;
}

/* Live Runtime Telemetry Strip */
.performance-telemetry-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  padding: 20px 24px;
  background: #0d0f12;
  border: 1px solid var(--border);
  border-radius: 4px;
  margin-bottom: clamp(48px, 8vh, 80px);
}

.perf-metric-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.perf-metric-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.perf-metric-val {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.perf-tag-target, .perf-tag-live, .perf-tag-capped {
  font-size: 9px;
  padding: 2px 6px;
  border-radius: 2px;
  letter-spacing: 0.08em;
}

.perf-tag-target {
  background: rgba(255, 255, 255, 0.08);
  color: var(--muted);
}

.perf-tag-live {
  background: rgba(100, 210, 255, 0.15);
  color: #64d2ff;
  border: 1px solid rgba(100, 210, 255, 0.3);
}

.perf-tag-capped {
  background: rgba(255, 255, 255, 0.08);
  color: #e2dfd7;
}

.perf-loop-status.status-running {
  color: #64d2ff;
}

.perf-loop-status.status-paused {
  color: var(--muted);
}

/* 6 Principles Layout: Desktop Pinned & Mobile Stacked */
.performance-principles-stage {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: clamp(40px, 6vw, 80px);
  position: relative;
  align-items: start;
  min-width: 0;
  max-width: 100%;
}

.perf-stage-sidebar {
  position: sticky;
  top: 120px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  min-width: 0;
}

.perf-stage-counter {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.perf-counter-sep {
  font-size: 16px;
  color: var(--muted);
  font-weight: 400;
}

.perf-stage-total {
  font-size: 16px;
  color: var(--muted);
  font-weight: 400;
}

.perf-progress-rail {
  width: 100%;
  height: 2px;
  background: rgba(255, 255, 255, 0.08);
  position: relative;
  overflow: hidden;
}

.perf-progress-fill {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 16.6%;
  background: var(--text);
  transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.perf-nav-index {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.perf-nav-item {
  background: none;
  border: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-align: left;
  padding: 6px 0;
  cursor: pointer;
  transition: color 0.2s ease, transform 0.2s ease;
}

.perf-nav-item:hover, .perf-nav-item.active {
  color: var(--text);
  transform: translateX(4px);
}

.perf-nav-item.active {
  font-weight: 700;
}

/* Stage Panels */
.perf-stage-track {
  position: relative;
  min-height: 520px;
  min-width: 0;
  max-width: 100%;
}

.perf-principle-panel {
  background: #0d0f12;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: clamp(28px, 4vw, 44px);
  margin-bottom: 24px;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

@media (min-width: 860px) {
  .perf-principle-panel {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    margin-bottom: 0;
    opacity: 0;
    pointer-events: none;
  }

  .perf-principle-panel.active {
    opacity: 1;
    pointer-events: auto;
  }
}

.perf-principle-panel.active {
  border-color: rgba(255, 255, 255, 0.2);
}

.perf-panel-header {
  margin-bottom: 28px;
}

.perf-panel-num {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--muted);
  display: block;
  margin-bottom: 8px;
}

.perf-panel-headline {
  font-family: var(--font-display);
  font-size: clamp(22px, 3.2vw, 36px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--text);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.perf-panel-summary {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
  color: var(--muted);
  max-width: 600px;
}

/* Principle 01: Compositor Comparison */
.perf-compositor-comparison {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.perf-comp-col {
  background: #08090b;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 3px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.perf-col-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.perf-col-tag.tag-green {
  color: #64d2ff;
}

.perf-col-tag.tag-muted {
  color: var(--muted);
}

.perf-prop-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.perf-prop-list li code {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
  padding: 3px 8px;
  border-radius: 2px;
  display: inline-block;
}

.perf-prop-list.struck li code {
  color: rgba(255, 255, 255, 0.4);
  text-decoration: line-through;
}

.perf-cost-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: #64d2ff;
  margin-top: auto;
}

.perf-cost-badge.danger {
  color: #ff6b6b;
}

/* Principle 02: Frame Budget */
.perf-budget-visualizer {
  background: #08090b;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 3px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.budget-rail-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--text);
}

.budget-target-tag {
  font-size: 10px;
  color: #64d2ff;
}

.budget-rail-bar {
  display: flex;
  width: 100%;
  height: 28px;
  border-radius: 2px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.05);
}

.rail-seg {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.06em;
  overflow: hidden;
  white-space: nowrap;
}

.seg-js { background: #3d74d9; color: #fff; }
.seg-style { background: #5c8ae6; color: #fff; }
.seg-layout { background: #ff9f43; color: #fff; }
.seg-paint { background: #ee5253; color: #fff; }
.seg-comp { background: #10ac84; color: #fff; }
.seg-idle { background: rgba(255, 255, 255, 0.08); color: var(--muted); }

.budget-legend {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
}

.legend-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 1px;
  margin-right: 4px;
}

/* Principle 03: DPR Flow */
.perf-dpr-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 12px;
}

.dpr-step-card {
  background: #08090b;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 3px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.dpr-step-card.active-card {
  border-color: rgba(100, 210, 255, 0.4);
  background: rgba(100, 210, 255, 0.04);
}

.dpr-step-num {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.dpr-step-title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text);
}

.dpr-step-desc {
  font-family: var(--font-sans);
  font-size: 12px;
  line-height: 1.4;
  color: var(--muted);
}

.dpr-flow-arrow {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--muted);
}

/* Principle 04: Lifecycle Wire */
.perf-lifecycle-wire {
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 16px;
  padding: 24px;
  background: #08090b;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 3px;
  margin-bottom: 16px;
}

.lifecycle-node {
  display: flex;
  flex-direction: column;
  gap: 6px;
  align-items: center;
  text-align: center;
}

.node-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.node-status {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
}

.node-status.status-active { color: #64d2ff; }
.node-status.status-paused { color: var(--muted); }

.node-action {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
}

.lifecycle-separator {
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--muted);
}

.perf-live-verification-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: #64d2ff;
  padding: 10px 14px;
  background: rgba(100, 210, 255, 0.06);
  border: 1px solid rgba(100, 210, 255, 0.2);
  border-radius: 3px;
}

.pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #64d2ff;
  box-shadow: 0 0 8px #64d2ff;
  animation: pulseDotAnim 1.6s infinite ease-in-out;
}

/* Principle 05: Device Matrix */
.perf-device-matrix {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

.matrix-card {
  background: #08090b;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 3px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.matrix-device {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text);
  margin-bottom: 4px;
}

.matrix-trait {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  position: relative;
  padding-left: 10px;
}

.matrix-trait::before {
  content: '·';
  position: absolute;
  left: 0;
  color: #64d2ff;
}

/* Principle 06: Accessibility Contrast */
.perf-a11y-contrast {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.a11y-row {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 18px;
  background: #08090b;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 3px;
}

.a11y-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--muted);
  padding: 4px 8px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 2px;
  white-space: nowrap;
}

.a11y-badge.tag-green {
  color: #64d2ff;
  border: 1px solid rgba(100, 210, 255, 0.3);
  background: rgba(100, 210, 255, 0.08);
}

.a11y-desc {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--text);
  line-height: 1.4;
}

/* Exit Bridges for Chapter 10 & 11 */
.performance-exit-bridge, .spatial-exit-bridge {
  margin-top: clamp(60px, 10vh, 100px);
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.perf-exit-container, .spatial-exit-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.perf-exit-tag, .spatial-exit-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.perf-exit-statement, .spatial-exit-statement {
  font-family: var(--font-display);
  font-size: clamp(24px, 4.4vw, 48px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--text);
}

.perf-exit-substatement, .spatial-exit-substatement {
  color: var(--muted);
  font-weight: 400;
}

.perf-exit-narrative {
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--muted);
  max-width: 500px;
}

.perf-exit-link, .spatial-exit-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text);
  text-decoration: none;
  padding: 10px 16px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 2px;
  width: fit-content;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.perf-exit-link:hover, .spatial-exit-link:hover {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

/* -------------------------------------------------------------------------- */
/* 11. CHAPTER 11 — THREE.JS CORE / SPATIAL SYSTEM                  */
/* -------------------------------------------------------------------------- */
.playground-section {
  padding: clamp(80px, 12vh, 140px) 0;
  position: relative;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  background: var(--bg);
}

.playground-header-block {
  margin-bottom: 36px;
  max-width: 720px;
}

.playground-canvas-container {
  width: 100%;
  height: clamp(440px, 60vh, 660px);
  background: radial-gradient(circle at 50% 50%, #0d121a 0%, #07090d 70%, #040507 100%);
  border: 1px solid var(--border);
  border-radius: 4px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.playground-core-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.playground-hud-overlay {
  position: absolute;
  bottom: 20px;
  left: 20px;
  right: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  pointer-events: none;
  flex-wrap: wrap;
  gap: 10px;
}

.hud-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  background: rgba(13, 15, 18, 0.85);
  backdrop-filter: blur(8px);
  padding: 6px 12px;
  border-radius: 2px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hud-label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.hud-val {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--text);
}

/* ==========================================================================
   12. NEXUS WORLD — CULMINATION OF THE PORTFOLIO
   ========================================================================== */
.nexus-scene {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(80px, 12vh, 140px) 0;
  overflow: hidden;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.nexus-stage-container {
  position: relative;
  z-index: 2;
  max-width: 1360px;
  margin: 0 auto;
}

.nexus-ambient-stage {
  position: absolute;
  top: 0;
  right: 0;
  width: 55%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  -webkit-mask-image: radial-gradient(circle at 62% 48%, black 35%, transparent 72%);
  mask-image: radial-gradient(circle at 62% 48%, black 35%, transparent 72%);
  opacity: 0.75;
}

.nexus-ambient-img {
  width: auto;
  height: 100%;
  max-height: 720px;
  object-fit: contain;
  filter: contrast(1.05) brightness(0.92);
  will-change: transform;
}

.nexus-opening-block {
  margin-top: 24px;
  margin-bottom: clamp(40px, 6vw, 68px);
  max-width: 920px;
}

.nexus-monumental-headline {
  font-family: var(--font-display);
  font-size: clamp(38px, 6.2vw, 84px);
  font-weight: 800;
  line-height: 0.98;
  letter-spacing: -0.04em;
  color: var(--text);
  margin-bottom: 24px;
}

.nexus-highlight-text {
  color: var(--text);
}

.nexus-positioning-lead {
  font-family: var(--font-sans);
  font-size: clamp(16px, 1.8vw, 21px);
  line-height: 1.6;
  color: var(--text-dim);
  max-width: 680px;
}

/* Editorial Information Layer (No Cards) */
.nexus-intel-editorial {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(24px, 4vw, 44px);
  padding: 32px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: clamp(48px, 7vw, 80px);
}

.nexus-intel-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.intel-col-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
}

.intel-col-text {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--text);
  letter-spacing: 0.04em;
}

.intel-discipline-chain {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.chain-sep {
  color: var(--accent);
  font-weight: bold;
}

/* Progressive Methodology Sequence */
.nexus-methodology-section {
  margin-bottom: clamp(48px, 7vw, 88px);
}

.methodology-header-strip {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 12px;
  margin-bottom: 12px;
}

.methodology-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
}

.methodology-status-tracker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--accent);
}

.nexus-methodology-track {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.method-stage-item {
  position: relative;
  padding: clamp(22px, 3.5vw, 36px) 0;
  padding-left: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  transition: opacity 0.35s ease, border-color 0.35s ease;
  opacity: 0.55;
}

.method-stage-item.is-active {
  opacity: 1;
}

.method-stage-indicator {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: transparent;
  transition: background 0.3s ease;
}

.method-stage-item.is-active .method-stage-indicator {
  background: var(--accent);
}

.method-stage-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin-bottom: 6px;
  display: block;
}

.method-stage-word {
  font-family: var(--font-display);
  font-size: clamp(32px, 5.5vw, 68px);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 10px;
  transition: color 0.3s ease;
}

.method-stage-summary {
  font-family: var(--font-sans);
  font-size: clamp(15px, 1.5vw, 19px);
  color: var(--text-dim);
  line-height: 1.5;
  margin-bottom: 10px;
  max-width: 600px;
}

.method-stage-facets {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

/* Studio Presence Links */
.nexus-presence-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding: 24px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  margin-bottom: 32px;
}

.presence-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
}

.presence-links {
  display: flex;
  gap: 24px;
}

.presence-link {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text);
  text-decoration: none;
  transition: color 0.2s ease;
}

.presence-link:hover {
  color: var(--accent);
}

/* Exit Bridges for Nexus & About */
.nexus-exit-bridge,
.about-exit-bridge {
  margin-top: clamp(60px, 10vh, 100px);
  padding-top: 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.nexus-exit-container,
.about-exit-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.nexus-exit-tag,
.about-exit-tag {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
}

.nexus-exit-statement,
.about-exit-statement {
  font-family: var(--font-display);
  font-size: clamp(24px, 4.4vw, 48px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--text);
}

.nexus-exit-substatement,
.about-exit-substatement {
  color: var(--muted);
  font-weight: 400;
}

.nexus-exit-link,
.about-exit-link {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--text);
  text-decoration: none;
  padding: 10px 16px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 2px;
  width: fit-content;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.nexus-exit-link:hover,
.about-exit-link:hover {
  background: var(--text);
  color: var(--bg);
}

.nexus-exit-link:hover .exit-arrow,
.about-exit-link:hover .exit-arrow {
  transform: translateY(2px);
}

/* ==========================================================================
   14. CONTACT — CINEMATIC CLOSING FRAME
   ========================================================================== */
.contact-section {
  padding: clamp(100px, 15vh, 180px) 0;
  position: relative;
  background: #030406;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.contact-container {
  max-width: 1360px;
  margin: 0 auto;
}

.contact-layout {
  margin-top: 24px;
  max-width: 900px;
}

.contact-monumental-headline {
  font-family: var(--font-display);
  font-size: clamp(38px, 6.8vw, 92px);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 0.98;
  color: var(--text);
  margin-top: 16px;
  margin-bottom: 24px;
}

.contact-sub-lead {
  font-family: var(--font-sans);
  font-size: clamp(16px, 1.8vw, 22px);
  color: var(--muted);
  line-height: 1.5;
  margin-bottom: clamp(40px, 6vw, 68px);
  max-width: 620px;
}

.contact-primary-block {
  margin-bottom: clamp(48px, 7vw, 84px);
}

.contact-major-action {
  display: inline-flex;
  align-items: baseline;
  gap: 16px;
  font-family: var(--font-display);
  font-size: clamp(28px, 4.8vw, 64px);
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
  border-bottom: 2px solid rgba(255, 255, 255, 0.25);
  padding-bottom: 8px;
  transition: border-color 0.3s ease, color 0.3s ease;
}

.contact-major-action:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.contact-major-action .action-arrow-icon {
  display: inline-block;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.contact-major-action:hover .action-arrow-icon {
  transform: translate(6px, -6px);
}

.contact-socials-row {
  display: flex;
  flex-direction: column;
  gap: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 28px;
}

.contact-social-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
}

.contact-links-strip {
  display: flex;
  gap: 32px;
}

.contact-channel-link {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--text);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color 0.2s ease;
}

.contact-channel-link:hover {
  color: var(--accent);
}

.contact-channel-link:hover .link-arrow {
  transform: translate(2px, -2px);
}

/* ==========================================================================
   SITE FOOTER: Minimalist, Resolved Closing Frame
   ========================================================================== */
.site-footer {
  padding: 36px 0;
  background: #020304;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}

.footer-inner-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-identity {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-logo-mark {
  width: 26px;
  height: 26px;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border-radius: 4px;
}

.footer-credits {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.footer-copy-name {
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.08em;
}

.footer-credo {
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

.footer-nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.footer-action-link {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-action-link:hover {
  color: var(--text);
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-ambient-stage {
    width: 60%;
    -webkit-mask-image: radial-gradient(circle at 70% 50%, black 40%, transparent 75%);
    mask-image: radial-gradient(circle at 70% 50%, black 40%, transparent 75%);
  }

  .nexus-ambient-stage {
    width: 50%;
  }

  .side-rail {
    display: none;
  }

  .principles-layout-grid {
    gap: clamp(32px, 5vw, 60px);
  }
}

@media (max-width: 860px) {
  .custom-cursor-wrap {
    display: none !important;
  }

  .desktop-nav {
    display: none;
  }

  .mobile-toggle {
    display: block;
  }

  .hero-scene {
    height: 100vh;
    height: 100dvh;
    min-height: 560px;
  }

  .hero-typography-stage {
    padding-bottom: 10vh;
  }

  .hero-subject-wrap {
    height: clamp(340px, 58vh, 460px);
    max-height: 75vh;
    transform: none;
  }

  .hero-monumental-line {
    font-size: clamp(36px, 9vw, 68px);
    justify-content: center;
  }

  .hero-line-pronab {
    align-self: center;
    margin: 0;
  }

  .hero-line-chakraborty {
    align-self: center;
    margin: 0;
  }

  .hero-editorial-overlay {
    padding: 24px 20px;
    padding-top: 84px;
    padding-bottom: 24px;
  }

  .position-content-container {
    padding: 0 24px;
  }

  .position-monumental-headline {
    font-size: clamp(26px, 6.5vw, 44px);
    line-height: 1.08;
  }

  .position-manifesto-text {
    font-size: clamp(14px, 3.6vw, 18px);
    line-height: 1.45;
  }

  .position-punchline-text {
    font-size: clamp(15px, 4vw, 20px);
  }

  .principles-layout-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .principles-left-sticky {
    position: static;
  }

  .principles-progress-container {
    display: none;
  }

  .manifesto-word {
    opacity: 1 !important;
    transform: none !important;
  }

  .stage-mobile-anchor {
    display: block;
  }

  .lab-graph-viewport {
    height: clamp(280px, 48vh, 400px);
  }

  .lab-control-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 16px;
  }

  .lab-primary-actions {
    width: 100%;
    display: flex;
  }

  .lab-primary-actions .btn-lab-ctrl {
    flex: 1;
    padding: 10px 12px;
  }

  .lab-speed-control {
    justify-content: space-between;
    width: 100%;
  }

  .lab-details-grid {
    grid-template-columns: 1fr;
  }

  /* Chapter 10 Performance Tablet / Mobile (<860px) */
  .performance-principles-stage {
    grid-template-columns: 1fr;
    gap: 32px;
    min-width: 0;
  }

  .perf-stage-sidebar {
    position: static;
    min-width: 0;
  }

  .perf-progress-rail,
  .perf-nav-index {
    display: none;
  }

  .perf-stage-track {
    min-width: 0;
  }

  .perf-principle-panel {
    padding: 24px 16px;
    margin-bottom: 20px;
    min-width: 0;
    max-width: 100%;
    box-sizing: border-box;
  }

  .perf-compositor-comparison {
    grid-template-columns: 1fr;
    gap: 14px;
    min-width: 0;
  }

  .perf-comp-col {
    padding: 16px 14px;
    min-width: 0;
    box-sizing: border-box;
  }

  .perf-dpr-flow {
    grid-template-columns: 1fr;
    gap: 12px;
    min-width: 0;
  }

  .dpr-step-card {
    min-width: 0;
    box-sizing: border-box;
  }

  .dpr-flow-arrow {
    transform: rotate(90deg);
    align-self: center;
  }

  .perf-lifecycle-wire {
    flex-direction: column;
    gap: 16px;
    padding: 16px 12px;
    min-width: 0;
    box-sizing: border-box;
  }

  .lifecycle-separator {
    transform: rotate(90deg);
  }

  .a11y-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    padding: 12px 14px;
    min-width: 0;
    box-sizing: border-box;
  }

  /* Chapter 12 Nexus World Mobile / Tablet */
  .nexus-scene {
    min-height: auto;
    padding: clamp(60px, 10vh, 100px) 0;
  }

  .nexus-ambient-stage {
    display: none;
  }

  .nexus-intel-editorial {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 24px 0;
    min-width: 0;
  }

  .nexus-methodology-track {
    gap: 0;
    min-width: 0;
  }

  .method-stage-item {
    padding: 20px 0;
    padding-left: 16px;
    opacity: 1 !important;
    min-width: 0;
    box-sizing: border-box;
  }

  .nexus-presence-strip {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  /* Chapter 13 About Mobile */
  .person-section {
    padding: clamp(60px, 10vh, 100px) 0;
  }

  .person-editorial-grid {
    grid-template-columns: 1fr;
    gap: 32px;
    min-width: 0;
  }

  .person-photo-frame {
    max-width: 380px;
    margin: 0 auto;
  }

  /* Chapter 14 Contact Mobile */
  .contact-section {
    padding: clamp(60px, 12vh, 120px) 0;
  }

  .contact-major-action {
    font-size: clamp(26px, 6vw, 42px);
    word-break: break-word;
  }

  .contact-links-strip {
    gap: 20px;
  }

  .footer-inner-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
}

@media (max-width: 479px) {
  .hero-scene {
    height: 100vh;
    height: 100dvh;
    min-height: 500px;
  }

  .hero-typography-stage {
    padding-bottom: 14vh;
  }

  .hero-subject-wrap {
    height: clamp(280px, 52vh, 390px);
    max-height: 70vh;
    transform: none;
  }

  .hero-monumental-line {
    font-size: clamp(30px, 8.8vw, 42px);
    line-height: 0.94;
    justify-content: center;
  }

  .hero-line-pronab {
    align-self: center;
    margin: 0;
  }

  .hero-line-chakraborty {
    align-self: center;
    margin: 0;
  }

  .hero-meta-top-right {
    display: none;
  }

  .hero-editorial-overlay {
    padding: 16px 14px;
    padding-top: 72px;
    padding-bottom: 18px;
  }

  .hero-meta-bottom-left {
    max-width: 170px;
  }

  .hero-meta-bottom-left .hero-meta-title,
  .hero-meta-bottom-left .hero-meta-sub {
    font-size: 9.5px;
  }

  .position-content-container {
    padding: 0 16px;
  }

  .position-monumental-headline {
    font-size: clamp(23px, 6.6vw, 32px);
    line-height: 1.1;
  }

  .position-manifesto-text {
    font-size: 13.5px;
    line-height: 1.42;
  }

  .position-punchline-text {
    font-size: 14.5px;
  }

  .brand-meta {
    gap: 6px;
  }

  .brand-system-tag {
    font-size: 10px;
  }

  .principle-stage-card {
    padding: 20px 14px;
  }

  .stage-schematic {
    gap: 4px 6px;
    font-size: 10px;
    padding: 6px 10px;
  }

  /* Chapter 10 & 11 Ultra-narrow Mobile (<480px) */
  .performance-section {
    padding: clamp(50px, 8vh, 80px) 0;
  }

  .performance-telemetry-strip {
    grid-template-columns: 1fr;
    padding: 14px 12px;
    gap: 12px;
    min-width: 0;
    box-sizing: border-box;
  }

  .perf-principle-panel {
    padding: 18px 12px;
    min-width: 0;
    box-sizing: border-box;
  }

  .perf-compositor-comparison {
    grid-template-columns: 1fr;
    min-width: 0;
  }

  .perf-comp-col {
    padding: 14px 10px;
    min-width: 0;
    box-sizing: border-box;
  }

  .perf-budget-visualizer {
    padding: 14px 10px;
    min-width: 0;
    box-sizing: border-box;
  }

  .budget-rail-label {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }

  .budget-legend {
    font-size: 8.5px;
    gap: 8px;
  }

  .perf-device-matrix {
    grid-template-columns: 1fr;
    gap: 12px;
    min-width: 0;
  }

  .matrix-card {
    padding: 12px 10px;
    min-width: 0;
    box-sizing: border-box;
  }

  .playground-hud-overlay {
    bottom: 12px;
    left: 12px;
    right: 12px;
    gap: 6px;
  }

  .hud-item {
    font-size: 8px;
    padding: 4px 6px;
  }

  /* Chapters 12, 13, 14 Ultra-narrow Mobile (<480px) */
  .nexus-monumental-headline {
    font-size: clamp(28px, 8.5vw, 42px);
    line-height: 1.02;
  }

  .method-stage-word {
    font-size: clamp(26px, 7.5vw, 36px);
  }

  .about-quiet-headline {
    font-size: clamp(26px, 7.8vw, 38px);
    line-height: 1.08;
  }

  .person-name-title {
    font-size: 28px;
  }

  .contact-monumental-headline {
    font-size: clamp(28px, 8.5vw, 42px);
    line-height: 1.02;
  }

  .contact-major-action {
    font-size: clamp(22px, 6.8vw, 32px);
    gap: 10px;
  }

  .contact-links-strip {
    flex-wrap: wrap;
    gap: 16px;
  }

  .footer-credits {
    flex-direction: column;
    gap: 4px;
  }

  .footer-nav-links {
    flex-wrap: wrap;
    gap: 16px;
  }
}

/* Reduced Motion Mode */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .preloader-curtain {
    display: none !important;
  }

  .custom-cursor-wrap {
    display: none !important;
  }

  .hero-ambient-img,
  .nexus-ambient-img,
  .person-portrait-img {
    transform: none !important;
  }

  .manifesto-word {
    opacity: 1 !important;
    transform: none !important;
  }

  .principle-stage-card {
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
  }

  .perf-principle-panel {
    opacity: 1 !important;
    transform: none !important;
  }

  .perf-progress-fill {
    transition: none !important;
  }

  .method-stage-item {
    opacity: 1 !important;
  }
}