/* ═══════════════════════════════════════════════
   CSS VARIABLES & THEME SYSTEM
   ═══════════════════════════════════════════════ */
:root {
  --orange-core: #FF6B00;
  --orange-bright: #FF8C33;
  --orange-deep: #E55A00;
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ── LIGHT THEME (DEFAULT) ──────────────────── */
[data-theme="light"] {
  --bg-primary: #FAFAFA;
  --bg-secondary: #F0F0F0;
  --bg-card: rgba(255, 107, 0, 0.04);
  --bg-card-hover: rgba(255, 107, 0, 0.08);
  --text-primary: #0A0A0A;
  --text-secondary: #333333;
  --text-muted: #666666;
  --text-faint: #888888;
  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-orange: rgba(255, 107, 0, 0.15);
  --border-card: rgba(255, 107, 0, 0.12);
  --nav-bg: rgba(250, 250, 250, 0.85);
  --nav-border: rgba(0, 0, 0, 0.06);
  --grid-line: rgba(255, 107, 0, 0.04);
  --grid-glow: rgba(255, 107, 0, 0.06);
  --orange-glow-soft: rgba(255, 107, 0, 0.08);
  --orange-glow-medium: rgba(255, 107, 0, 0.12);
  --vision-biz-bg: linear-gradient(135deg, rgba(255, 107, 0, 0.06) 0%, rgba(255, 107, 0, 0.02) 100%);
  --vision-dev-bg: linear-gradient(135deg, rgba(0, 0, 0, 0.04) 0%, rgba(0, 0, 0, 0.01) 100%);
  --vision-dev-border: rgba(0, 0, 0, 0.08);
  --vision-item-bg: rgba(255, 255, 255, 0.7);
  --vision-item-hover: rgba(255, 255, 255, 0.9);
  --sim-input-bg: linear-gradient(180deg, rgba(255, 107, 0, 0.06) 0%, rgba(250, 250, 250, 0.95) 100%);
  --sim-output-bg: linear-gradient(180deg, rgba(0, 0, 0, 0.04) 0%, rgba(250, 250, 250, 0.95) 100%);
  --sim-output-border: rgba(0, 0, 0, 0.08);
  --sim-input-q-bg: rgba(255, 107, 0, 0.06);
  --sim-input-q-border: rgba(255, 107, 0, 0.1);
  --sim-output-q-bg: rgba(74, 222, 128, 0.06);
  --sim-output-q-border: rgba(74, 222, 128, 0.12);
  --progress-bar-bg: #E0E0E0;
  --ghost-border: rgba(0, 0, 0, 0.15);
  --ghost-color: var(--text-muted);
  --ghost-hover-bg: rgba(0, 0, 0, 0.03);
  --scrollbar-track: var(--bg-primary);
  --scrollbar-thumb: #CCCCCC;
  --scrollbar-hover: #AAAAAA;
  --footer-border: rgba(0, 0, 0, 0.06);
  --mobile-nav-bg: rgba(250, 250, 250, 0.97);
  --section-line-opacity: 0.25;
  --strong-color: var(--text-primary);
  --hero-radial-1: rgba(255, 107, 0, 0.06);
  --hero-radial-2: rgba(255, 107, 0, 0.03);
  --strike-color: #888888;
}

/* ── DARK THEME ─────────────────────────────── */
[data-theme="dark"] {
  --bg-primary: #0A0A0A;
  --bg-secondary: #111111;
  --bg-card: rgba(255, 107, 0, 0.03);
  --bg-card-hover: rgba(255, 107, 0, 0.06);
  --text-primary: #FAFAFA;
  --text-secondary: #BBBBBB;
  --text-muted: #999999;
  --text-faint: #666666;
  --border-subtle: rgba(255, 255, 255, 0.05);
  --border-orange: rgba(255, 107, 0, 0.08);
  --border-card: rgba(255, 107, 0, 0.08);
  --nav-bg: rgba(10, 10, 10, 0.8);
  --nav-border: rgba(255, 107, 0, 0.08);
  --grid-line: rgba(255, 107, 0, 0.03);
  --grid-glow: rgba(255, 107, 0, 0.06);
  --orange-glow-soft: rgba(255, 107, 0, 0.08);
  --orange-glow-medium: rgba(255, 107, 0, 0.15);
  --vision-biz-bg: linear-gradient(135deg, rgba(255, 107, 0, 0.06) 0%, rgba(255, 107, 0, 0.02) 100%);
  --vision-dev-bg: linear-gradient(135deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0.01) 100%);
  --vision-dev-border: rgba(255, 255, 255, 0.08);
  --vision-item-bg: rgba(0, 0, 0, 0.3);
  --vision-item-hover: rgba(0, 0, 0, 0.5);
  --sim-input-bg: linear-gradient(180deg, rgba(255, 107, 0, 0.06) 0%, rgba(10, 10, 10, 0.9) 100%);
  --sim-output-bg: linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, rgba(10, 10, 10, 0.9) 100%);
  --sim-output-border: rgba(255, 255, 255, 0.08);
  --sim-input-q-bg: rgba(255, 107, 0, 0.06);
  --sim-input-q-border: rgba(255, 107, 0, 0.1);
  --sim-output-q-bg: rgba(74, 222, 128, 0.04);
  --sim-output-q-border: rgba(74, 222, 128, 0.08);
  --progress-bar-bg: #2A2A2A;
  --ghost-border: rgba(255, 255, 255, 0.12);
  --ghost-color: #BBBBBB;
  --ghost-hover-bg: rgba(255, 255, 255, 0.03);
  --scrollbar-track: #0A0A0A;
  --scrollbar-thumb: #3A3A3A;
  --scrollbar-hover: #555555;
  --footer-border: rgba(255, 255, 255, 0.05);
  --mobile-nav-bg: rgba(10, 10, 10, 0.95);
  --section-line-opacity: 0.3;
  --strong-color: #FFFFFF;
  --hero-radial-1: rgba(255, 107, 0, 0.08);
  --hero-radial-2: rgba(255, 107, 0, 0.04);
  --strike-color: #777777;
}

/* ── THEME TRANSITION ───────────────────────── */
body,
nav,
.grid-bg,
.vision-side,
.sim-panel,
.diff-card,
.truth-block,
.chaos-list li,
.benefit-less-item,
.btn-ghost,
footer {
  transition: background 0.4s ease, color 0.4s ease, border-color 0.4s ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.6;
}

/* ═══════════════════════════════════════════════
   GLOBAL ELEMENTS
   ═══════════════════════════════════════════════ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
}

section {
  padding: clamp(4rem, 10vw, 8rem) 0;
  position: relative;
}

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

/* ═══════════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════════ */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 20px rgba(255, 107, 0, 0.3); }
  50% { box-shadow: 0 0 40px rgba(255, 107, 0, 0.6), 0 0 80px rgba(255, 107, 0, 0.2); }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

@keyframes gridPulse {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }

/* ═══════════════════════════════════════════════
   NAVIGATION
   ═══════════════════════════════════════════════ */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.2rem 0;
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--nav-border);
  animation: fadeIn 0.6s var(--ease-out-expo);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.logo-mark {
  width: 32px;
  height: 32px;
  background: var(--orange-core);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: #FFFFFF;
  transform: rotate(-3deg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.3s ease;
  letter-spacing: 0.01em;
}

.nav-links a:hover {
  color: var(--text-primary);
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}

.nav-cta {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.6rem 1.5rem;
  background: var(--orange-core);
  color: #FFFFFF;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.3s ease;
  letter-spacing: -0.01em;
}

.nav-cta:hover {
  background: var(--orange-bright);
  transform: translateY(-1px);
}

/* Toggle buttons */
.toggle-btn {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid var(--border-subtle);
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  color: var(--text-muted);
  position: relative;
}

.toggle-btn:hover {
  border-color: var(--orange-core);
  color: var(--orange-core);
  background: var(--bg-card);
}

.lang-toggle {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  width: auto;
  padding: 0 0.6rem;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ═══════════════════════════════════════════════
   BACKGROUND GRID SYSTEM
   ═══════════════════════════════════════════════ */
.grid-bg {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 60px 60px;
  animation: gridPulse 8s ease-in-out infinite;
}

.grid-bg::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 50% 0%, var(--grid-glow) 0%, transparent 60%);
}

/* ═══════════════════════════════════════════════
   1. HERO SECTION
   ═══════════════════════════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding-top: 6rem;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--hero-radial-1) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--hero-radial-2) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-content {
  text-align: center;
  max-width: 900px;
  position: relative;
  z-index: 1;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--orange-core);
  background: var(--bg-card);
  border: 1px solid var(--border-orange);
  padding: 0.5rem 1.2rem;
  border-radius: 100px;
  margin-bottom: 2.5rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  animation: fadeInUp 0.8s var(--ease-out-expo);
}

.hero-tag::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--orange-core);
  border-radius: 50%;
  animation: blink 2s ease-in-out infinite;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-bottom: 1.8rem;
  animation: fadeInUp 0.8s var(--ease-out-expo) 0.15s both;
}

.hero h1 .line {
  display: block;
}

.hero h1 .highlight {
  color: var(--orange-core);
  position: relative;
}

.hero h1 .highlight::after {
  content: '';
  position: absolute;
  bottom: 0.05em;
  left: 0;
  right: 0;
  height: 0.08em;
  background: var(--orange-core);
  opacity: 0.4;
  border-radius: 2px;
}

/* ── Word Rotator ─────────────────────────────── */
.word-rotator {
  display: inline-block;
  position: relative;
  overflow: hidden;
  vertical-align: bottom;
  height: 1.1em;
}

.word-rotator::after {
  content: '';
  position: absolute;
  bottom: 0.05em;
  left: 0;
  right: 0;
  height: 0.08em;
  background: var(--orange-core);
  opacity: 0.3;
  border-radius: 2px;
}

.word-rotator-inner {
  display: block;
  transition: transform 0.5s var(--ease-out-expo);
}

.word-rotator-word {
  display: block;
  height: 1.1em;
  line-height: 1.1em;
  color: var(--orange-core);
  white-space: nowrap;
}

.hero-sub {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 3rem;
  line-height: 1.6;
  font-weight: 400;
  animation: fadeInUp 0.8s var(--ease-out-expo) 0.3s both;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s var(--ease-out-expo) 0.45s both;
}

.btn-primary {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  padding: 1rem 2.5rem;
  background: var(--orange-core);
  color: #FFFFFF;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s var(--ease-out-expo);
  letter-spacing: -0.01em;
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.btn-primary:hover {
  background: var(--orange-bright);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255, 107, 0, 0.3);
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-ghost {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 500;
  padding: 1rem 2rem;
  background: transparent;
  color: var(--ghost-color);
  border: 1px solid var(--ghost-border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  letter-spacing: -0.01em;
}

.btn-ghost:hover {
  border-color: var(--text-muted);
  color: var(--text-primary);
  background: var(--ghost-hover-bg);
}

.hero-proof {
  margin-top: 4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s var(--ease-out-expo) 0.6s both;
}

.hero-proof-item {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-faint);
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.hero-proof-item .dot {
  width: 4px;
  height: 4px;
  background: var(--orange-core);
  border-radius: 50%;
}

/* Scroll indicator */
.scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  animation: fadeIn 1s var(--ease-out-expo) 1.2s both;
}

.scroll-hint span {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-faint);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--orange-core), transparent);
}

/* ═══════════════════════════════════════════════
   2. THE REAL PROBLEM
   ═══════════════════════════════════════════════ */
.problem {
  background: var(--bg-secondary);
  position: relative;
}

.problem::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--orange-core), transparent);
  opacity: var(--section-line-opacity);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--orange-core);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-label::before {
  content: '';
  width: 20px;
  height: 1px;
  background: var(--orange-core);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
  margin-top: 3rem;
}

.problem-text p {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.problem-text strong {
  color: var(--strong-color);
  font-weight: 600;
}

.problem-text .callout {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--orange-core);
  line-height: 1.3;
  margin: 2rem 0;
  padding-left: 1.5rem;
  border-left: 3px solid var(--orange-core);
}

.chaos-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.chaos-list li {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  padding: 1rem 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  transition: all 0.3s ease;
}

.chaos-list li:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 107, 0, 0.2);
  transform: translateX(4px);
}

.chaos-list li::before {
  content: '×';
  font-size: 1.2rem;
  color: var(--orange-core);
  font-weight: 700;
  flex-shrink: 0;
}

/* ═══════════════════════════════════════════════
   3. TWO VISIONS
   ═══════════════════════════════════════════════ */
.visions {
  position: relative;
  overflow: hidden;
}

.visions-split {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 0;
  margin-top: 3rem;
  position: relative;
}

.vision-side {
  padding: 2.5rem;
  border-radius: 12px;
  position: relative;
}

.vision-business {
  background: var(--vision-biz-bg);
  border: 1px solid var(--border-orange);
}

.vision-dev {
  background: var(--vision-dev-bg);
  border: 1px solid var(--vision-dev-border);
}

.vision-side h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
  letter-spacing: -0.01em;
}

.vision-side .vision-role {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-faint);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.vision-business .vision-role { color: var(--orange-core); }

.vision-items {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.vision-item {
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 0.7rem 1rem;
  background: var(--vision-item-bg);
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  transition: all 0.3s ease;
}

.vision-item:hover {
  background: var(--vision-item-hover);
}

.vision-item .icon {
  font-size: 0.8rem;
  flex-shrink: 0;
}

.vision-bridge {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.5rem;
  position: relative;
}

.bridge-line {
  width: 2px;
  flex: 1;
  background: linear-gradient(to bottom, transparent, var(--orange-core), transparent);
  opacity: 0.3;
}

.bridge-hub {
  width: 64px;
  height: 64px;
  background: var(--orange-core);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 1rem 0;
  animation: pulseGlow 3s ease-in-out infinite;
  position: relative;
  z-index: 2;
  flex-shrink: 0;
}

.bridge-hub span {
  font-family: var(--font-display);
  font-size: 0.65rem;
  font-weight: 700;
  color: #FFFFFF;
  letter-spacing: 0.03em;
  text-align: center;
  line-height: 1.2;
}

.vision-caption {
  text-align: center;
  margin-top: 3rem;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: -0.01em;
}

.vision-caption .hl {
  color: var(--orange-core);
}

/* ═══════════════════════════════════════════════
   4. INTERACTIVE SIMULATION
   ═══════════════════════════════════════════════ */
.simulation {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.simulation::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--orange-core), transparent);
  opacity: var(--section-line-opacity);
}

.sim-wrapper {
  margin-top: 3rem;
  display: grid;
  grid-template-columns: 1fr 60px 1fr;
  gap: 0;
  align-items: stretch;
}

.sim-panel {
  border-radius: 12px;
  overflow: hidden;
}

.sim-panel-header {
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.sim-panel-header .dots {
  display: flex;
  gap: 5px;
}

.sim-panel-header .dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.sim-input-panel {
  background: var(--sim-input-bg);
  border: 1px solid var(--border-orange);
}

.sim-input-panel .dots span:nth-child(1) { background: var(--orange-core); opacity: 0.6; }
.sim-input-panel .dots span:nth-child(2) { background: var(--orange-core); opacity: 0.4; }
.sim-input-panel .dots span:nth-child(3) { background: var(--orange-core); opacity: 0.2; }

.sim-output-panel {
  background: var(--sim-output-bg);
  border: 1px solid var(--sim-output-border);
}

.sim-output-panel .dots span:nth-child(1) { background: #4ADE80; opacity: 0.6; }
.sim-output-panel .dots span:nth-child(2) { background: #4ADE80; opacity: 0.4; }
.sim-output-panel .dots span:nth-child(3) { background: #4ADE80; opacity: 0.2; }

.sim-panel-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.sim-panel-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  min-height: 400px;
}

.sim-question {
  padding: 0.9rem 1.1rem;
  border-radius: 8px;
  opacity: 0;
  transform: translateY(10px);
}

.sim-input-panel .sim-question {
  background: var(--sim-input-q-bg);
  border: 1px solid var(--sim-input-q-border);
}

.sim-output-panel .sim-question {
  background: var(--sim-output-q-bg);
  border: 1px solid var(--sim-output-q-border);
}

.sim-question.active {
  animation: fadeInUp 0.5s var(--ease-out-expo) forwards;
}

.sim-q-label {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--text-faint);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}

.sim-input-panel .sim-q-label { color: var(--orange-core); opacity: 0.7; }
.sim-output-panel .sim-q-label { color: #4ADE80; opacity: 0.7; }

.sim-q-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.sim-q-text strong {
  color: var(--strong-color);
  font-weight: 600;
}

/* Arrow bridge */
.sim-bridge {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.sim-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.sim-arrow-line {
  width: 2px;
  height: 60px;
  background: linear-gradient(to bottom, var(--orange-core), #4ADE80);
  opacity: 0.4;
}

.sim-arrow-icon {
  width: 36px;
  height: 36px;
  background: var(--orange-core);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: #FFFFFF;
  font-weight: 700;
  animation: pulseGlow 2.5s ease-in-out infinite;
}

.sim-arrow-label {
  font-family: var(--font-mono);
  font-size: 0.55rem;
  color: var(--text-faint);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  writing-mode: vertical-lr;
  text-orientation: mixed;
}

/* Progress bar */
.sim-progress {
  margin-top: 2.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.sim-progress-bar {
  flex: 1;
  height: 3px;
  background: var(--progress-bar-bg);
  border-radius: 2px;
  overflow: hidden;
}

.sim-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--orange-core), #4ADE80);
  border-radius: 2px;
  width: 0%;
  transition: width 0.5s var(--ease-out-expo);
}

.sim-progress-text {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-faint);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.sim-restart-btn {
  display: block;
  margin: 1.5rem auto 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--orange-core);
  background: var(--bg-card);
  border: 1px solid var(--border-orange);
  padding: 0.5rem 1.2rem;
  border-radius: 6px;
  cursor: pointer;
  letter-spacing: 0.05em;
  transition: all 0.3s ease;
}

.sim-restart-btn:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 107, 0, 0.3);
}

/* ═══════════════════════════════════════════════
   5. STRATEGIC DIFFERENTIATOR
   ═══════════════════════════════════════════════ */
.differentiator {
  position: relative;
}

.diff-statement {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  max-width: 700px;
  margin-bottom: 3.5rem;
}

.diff-statement .not {
  color: var(--strike-color);
  text-decoration: line-through;
  text-decoration-color: var(--orange-core);
  text-decoration-thickness: 3px;
}

.diff-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.2rem;
}

.diff-card {
  padding: 2rem 1.5rem;
  border-radius: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  transition: all 0.4s var(--ease-out-expo);
  position: relative;
  overflow: hidden;
}

.diff-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--orange-core);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease-out-expo);
}

.diff-card:hover::before {
  transform: scaleX(1);
}

.diff-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 107, 0, 0.2);
  transform: translateY(-4px);
}

.diff-card-icon {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.diff-card h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.diff-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ═══════════════════════════════════════════════
   6. BENEFITS SECTION
   ═══════════════════════════════════════════════ */
.benefits {
  background: var(--bg-secondary);
  position: relative;
}

.benefits::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--orange-core), transparent);
  opacity: var(--section-line-opacity);
}

.benefits-flex {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-top: 3rem;
}

.benefits-less {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.benefit-less-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.2rem;
  border-radius: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  transition: all 0.3s ease;
}

.benefit-less-item:hover {
  background: var(--bg-card-hover);
  transform: translateX(4px);
}

.benefit-strike {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--strike-color);
  text-decoration: line-through;
  text-decoration-color: var(--orange-core);
  flex: 1;
}

.benefit-check {
  color: var(--orange-core);
  font-weight: 700;
  font-size: 1.1rem;
}

.benefits-more {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.benefit-more-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.benefit-more-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--orange-core);
  background: var(--bg-card-hover);
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-weight: 600;
  margin-top: 0.15rem;
}

.benefit-more-text h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.2rem;
  letter-spacing: -0.01em;
}

.benefit-more-text p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ═══════════════════════════════════════════════
   7. SINGLE SOURCE OF TRUTH
   ═══════════════════════════════════════════════ */
.truth {
  position: relative;
  text-align: center;
}

.truth-blocks {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

.truth-block {
  padding: 2.5rem 2rem;
  border-radius: 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  text-align: left;
  position: relative;
  overflow: hidden;
  transition: all 0.4s var(--ease-out-expo);
}

.truth-block:hover {
  border-color: rgba(255, 107, 0, 0.25);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.truth-block::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--orange-core);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.truth-block:hover::after {
  opacity: 1;
}

.truth-block-keyword {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--orange-core);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.truth-block h4 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  letter-spacing: -0.02em;
}

.truth-block p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ═══════════════════════════════════════════════
   8. FUTURE VISION
   ═══════════════════════════════════════════════ */
.future {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.future::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--orange-core), transparent);
  opacity: var(--section-line-opacity);
}

.future-content {
  max-width: 700px;
}

.future-quote {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2.4rem);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 2rem;
  position: relative;
  padding-left: 2rem;
}

.future-quote::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--orange-core), transparent);
  border-radius: 2px;
}

.future-quote .hl {
  color: var(--orange-core);
}

.future p {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  max-width: 600px;
}

.future p strong {
  color: var(--strong-color);
}

/* ═══════════════════════════════════════════════
   9. PRICING SECTION
   ═══════════════════════════════════════════════ */
.pricing {
  text-align: center;
  padding: clamp(5rem, 12vw, 10rem) 0;
  position: relative;
  background: var(--bg-secondary);
}

.pricing::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--orange-core), transparent);
  opacity: var(--section-line-opacity);
}

.pricing .section-title {
  font-size: clamp(2.2rem, 5vw, 4rem);
  margin-bottom: 0.5rem;
}

.pricing-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 3rem;
  max-width: 550px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

.pricing-card {
  max-width: 460px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 2px solid var(--orange-core);
  border-radius: 16px;
  padding: 2.5rem 2rem 2rem;
  position: relative;
  overflow: hidden;
}

.pricing-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--orange-deep), var(--orange-core), var(--orange-bright));
}

.pricing-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  color: #FFFFFF;
  background: var(--orange-core);
  padding: 0.35rem 1rem;
  border-radius: 100px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.pricing-plan-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.pricing-spots {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--orange-core);
  letter-spacing: 0.05em;
  margin-bottom: 1.5rem;
}

.pricing-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 0.3rem;
  margin-bottom: 0.5rem;
}

.pricing-currency {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--text-muted);
}

.pricing-amount {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--orange-core);
  letter-spacing: -0.03em;
  line-height: 1;
}

.pricing-period {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-faint);
}

.pricing-lock {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
  letter-spacing: 0.02em;
}

.pricing-perks {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  margin-bottom: 2rem;
  text-align: left;
}

.pricing-perks li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.5rem 0;
}

.pricing-perks li .perk-icon {
  width: 22px;
  height: 22px;
  background: rgba(255, 107, 0, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  flex-shrink: 0;
  color: var(--orange-core);
}

.pricing-cta {
  width: 100%;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  padding: 1.1rem 2rem;
  background: var(--orange-core);
  color: #FFFFFF;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: all 0.3s var(--ease-out-expo);
  letter-spacing: -0.01em;
  position: relative;
  overflow: hidden;
}

.pricing-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.pricing-cta:hover {
  background: var(--orange-bright);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255, 107, 0, 0.3);
}

.pricing-cta:hover::before {
  left: 100%;
}

.pricing-cta:disabled {
  opacity: 0.7;
  cursor: wait;
}

.pricing-secure {
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-faint);
  letter-spacing: 0.05em;
}

.pricing-guarantee {
  margin-top: 3rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 400px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

/* ═══════════════════════════════════════════════
   FOOTER
   ═══════════════════════════════════════════════ */
footer {
  padding: 3rem 0;
  border-top: 1px solid var(--footer-border);
}

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

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-faint);
  letter-spacing: 0.05em;
}

.footer-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.footer-links a {
  font-size: 0.8rem;
  color: var(--text-muted);
  transition: color 0.3s ease;
}

.footer-links a:hover { color: var(--orange-core); }

/* ═══════════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════════ */
@media (max-width: 1024px) {
  .diff-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .sim-wrapper {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .sim-bridge { padding: 1rem; }
  .sim-arrow { flex-direction: row; }
  .sim-arrow-line { width: 60px; height: 2px; }
  .sim-arrow-label { writing-mode: horizontal-tb; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--mobile-nav-bg);
    backdrop-filter: blur(20px);
    padding: 1.5rem;
    gap: 1rem;
    border-bottom: 1px solid var(--nav-border);
  }
  .problem-grid,
  .benefits-flex { grid-template-columns: 1fr; gap: 2.5rem; }
  .visions-split { grid-template-columns: 1fr; gap: 1rem; }
  .vision-bridge { flex-direction: row; padding: 1rem; }
  .bridge-line { height: 2px; width: 40px; }
  .bridge-hub { width: 48px; height: 48px; border-radius: 12px; margin: 0 0.5rem; }
  .diff-grid { grid-template-columns: 1fr; }
  .truth-blocks { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; gap: 1.5rem; text-align: center; }
  .hero-proof { flex-direction: column; gap: 0.8rem; }
  .hero-cta-group { flex-direction: column; width: 100%; }
  .hero-cta-group .btn-primary,
  .hero-cta-group .btn-ghost { width: 100%; text-align: center; }
  .nav-cta { display: none; }
}

/* ═══════════════════════════════════════════════
   SCROLLBAR
   ═══════════════════════════════════════════════ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-hover); }

::selection {
  background: rgba(255, 107, 0, 0.3);
  color: var(--text-primary);
}