@charset "UTF-8";
/* ==========================================================================
   FDE Academy Design System & Core Styles
   Modern, Ultra-Clean, High-Performance Vanilla CSS
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Color Palette - Premium Slate & Electric Cyan-Blue */
  --bg-main: #090d16;
  --bg-surface: #0f172a;
  --bg-surface-elevated: #1e293b;
  --bg-surface-glass: rgba(15, 23, 42, 0.85);
  
  --border-subtle: #1e293b;
  --border-light: #334155;
  --border-focus: #38bdf8;
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --brand-primary: #0284c7;
  --brand-hover: #0369a1;
  --brand-light: #38bdf8;
  --brand-glow: rgba(56, 189, 248, 0.15);
  
  --accent-success: #10b981;
  --accent-warning: #f59e0b;
  --accent-danger: #ef4444;
  
  /* Typography with Robust Chinese System Fallbacks */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', '微软雅黑', sans-serif;
  --font-mono: 'JetBrains Mono', 'Cascadia Code', Consolas, Monaco, Menlo, monospace;
  
  /* Layout & Spacing */
  --container-max: 1200px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.6;
  letter-spacing: -0.01em;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

img, svg {
  display: block;
  max-width: 100%;
}

code, pre {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-surface-glass);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  transition: border-color var(--transition-fast);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.25rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.brand-icon {
  width: 2rem;
  height: 2rem;
  background: linear-gradient(135deg, var(--brand-primary), var(--brand-light));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 1rem;
}

.brand-tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  color: var(--brand-light);
  margin-left: 0.25rem;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.nav-link:hover, .nav-link.active {
  color: var(--brand-light);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* ==========================================================================
   Buttons & Controls
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--brand-primary);
  color: #ffffff;
  border-color: var(--brand-primary);
}

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

.btn-secondary {
  background-color: var(--bg-surface-elevated);
  color: var(--text-primary);
  border-color: var(--border-light);
}

.btn-secondary:hover {
  background-color: #334155;
  color: #ffffff;
}

.btn-outline {
  background-color: transparent;
  color: var(--brand-light);
  border-color: var(--brand-primary);
}

.btn-outline:hover {
  background-color: var(--brand-glow);
}

.btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: 1.0625rem;
}

/* ==========================================================================
   Typography & Hero Section
   ========================================================================== */
.section {
  padding: 5rem 0;
}

.section-hero {
  padding: 5rem 0 3.5rem;
  position: relative;
  overflow: hidden;
}

/* ==========================================================================
   Full Master Hero Carousel Stage (全主视觉三卡片轮播舞台)
   ========================================================================== */
.hero-stage-container {
  position: relative;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
}

.hero-stage-nav {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
  background: rgba(15, 23, 42, 0.75);
  padding: 0.35rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}

.hero-nav-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.55rem 0.875rem;
  background: transparent;
  border: none;
  border-radius: var(--radius-full);
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.hero-nav-btn:hover {
  color: var(--text-primary);
}

.hero-nav-btn.active {
  background: var(--brand-primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.4);
}

.hero-stage-wrapper {
  width: 100%;
  overflow: hidden;
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  background: linear-gradient(145deg, rgba(30, 41, 59, 0.7), rgba(15, 23, 42, 0.95));
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.6), 0 0 40px rgba(2, 132, 199, 0.12);
}

.hero-stage-track {
  display: flex;
  width: 300%;
  transition: transform 0.5s cubic-bezier(0.2, 0.8, 0.2, 1);
  will-change: transform;
}

.hero-slide {
  width: 33.333333%;
  flex-shrink: 0;
  padding: 3.5rem 3rem 2.5rem;
  box-sizing: border-box;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.hero-slide .hero-badge {
  margin-bottom: 1.5rem;
}

.hero-slide .hero-title {
  font-size: clamp(2rem, 4.2vw, 3.125rem);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
  text-align: center;
  max-width: 900px;
}

.hero-slide .hero-subtitle {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 2rem;
  max-width: 820px;
  text-align: center;
}

.hero-slide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  width: 100%;
  max-width: 880px;
  margin-bottom: 2.25rem;
}

.slide-grid-box {
  background: rgba(15, 23, 42, 0.65);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem 1.15rem;
  text-align: left;
}

.slide-grid-box strong {
  color: var(--brand-light);
  display: block;
  font-size: 0.9375rem;
  margin-bottom: 0.35rem;
}

.slide-grid-box p {
  color: var(--text-muted);
  font-size: 0.8125rem;
  line-height: 1.45;
  margin: 0;
}

.hero-slide .hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.stage-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(15, 23, 42, 0.9);
  border: 1px solid var(--border-light);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  cursor: pointer;
  z-index: 20;
  transition: all var(--transition-fast);
  backdrop-filter: blur(8px);
  user-select: none;
}

.stage-arrow:hover {
  background: var(--brand-primary);
  color: #fff;
  border-color: var(--brand-primary);
  transform: translateY(-50%) scale(1.1);
}

.stage-arrow.prev-btn {
  left: 1rem;
}

.stage-arrow.next-btn {
  right: 1rem;
}

.hero-stage-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.875rem 2rem;
  background: rgba(15, 23, 42, 0.9);
  border-top: 1px solid var(--border-subtle);
}

.hero-stage-dots {
  display: flex;
  gap: 0.5rem;
}

.stage-dot {
  width: 24px;
  height: 4px;
  background: var(--border-light);
  border-radius: 2px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.stage-dot.active {
  background: var(--brand-light);
  width: 40px;
}

.stage-auto-text {
  font-size: 0.75rem;
  color: var(--text-muted);
}

@media (max-width: 960px) {
  .hero-slide-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .hero-slide {
    padding: 2.5rem 1.25rem 2rem;
  }
  .stage-arrow {
    display: none;
  }
  .hero-stage-nav {
    flex-direction: column;
    border-radius: var(--radius-md);
  }
  .hero-nav-btn {
    border-radius: var(--radius-sm);
  }
}

.showcase-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.card-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--brand-light);
}

.card-status-dot {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: #f59e0b;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: #f59e0b;
  border-radius: 50%;
  box-shadow: 0 0 8px #f59e0b;
  animation: pulseAnim 2s infinite;
}

.pulse-dot-green {
  width: 8px;
  height: 8px;
  background-color: var(--accent-success);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--accent-success);
  animation: pulseAnim 2s infinite;
}

.pulse-dot-cyan {
  width: 8px;
  height: 8px;
  background-color: var(--brand-light);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--brand-light);
  animation: pulseAnim 2s infinite;
}

@keyframes pulseAnim {
  0% { transform: scale(0.95); opacity: 0.7; }
  50% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.7; }
}

.weapon-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.weapon-box {
  background: rgba(2, 132, 199, 0.06);
  border: 1px solid rgba(56, 189, 248, 0.22);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
  font-size: 0.75rem;
}

.weapon-box-header {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--brand-light);
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.weapon-box p {
  color: var(--text-secondary);
  line-height: 1.45;
  margin: 0;
}

.premium-stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.premium-stat-box {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
}

.p-num {
  font-size: 1.25rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--brand-light);
}

.p-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.35;
  margin-top: 0.25rem;
}

.card-feature-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.feature-bullet {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

.feature-bullet .b-icon {
  font-size: 1rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.feature-bullet strong {
  color: var(--text-primary);
}

.leap-comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.leap-box {
  padding: 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
}

.leap-old {
  background: rgba(239, 68, 68, 0.08);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.leap-old .leap-box-title {
  color: #f87171;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.leap-new {
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.leap-new .leap-box-title {
  color: #34d399;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.leap-box ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.leap-box li {
  margin-bottom: 0.35rem;
  line-height: 1.4;
  color: var(--text-secondary);
}

.showcase-card-quote {
  font-size: 0.8125rem;
  font-style: italic;
  color: var(--brand-light);
  background: rgba(2, 132, 199, 0.08);
  border-left: 3px solid var(--brand-primary);
  padding: 0.6rem 0.75rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  line-height: 1.4;
}

.showcase-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-subtle);
}

.showcase-indicators {
  display: flex;
  gap: 0.4rem;
}

.ind-dot {
  width: 20px;
  height: 4px;
  background: var(--border-light);
  border-radius: 2px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.ind-dot.active {
  background: var(--brand-light);
  width: 32px;
}

.showcase-auto-text {
  font-size: 0.75rem;
  color: var(--text-muted);
}

@media (max-width: 960px) {
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .hero-main {
    text-align: center;
  }
  .hero-main .hero-title, .hero-main .hero-subtitle {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
  }
  .hero-main .hero-actions {
    justify-content: center;
  }
  .hero-micro-proof {
    justify-content: center;
  }
}

/* ==========================================================================
   FDE Training Power & Skill Gap Reality Check (Battle Matrix)
   ========================================================================== */
.gap-reality-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1.15rem;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-full);
  color: #f87171;
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  margin-bottom: 1.25rem;
}

.battle-matrix {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  margin-top: 2.5rem;
}

.battle-strip {
  background: linear-gradient(145deg, rgba(15, 23, 42, 0.95), rgba(11, 15, 25, 0.98));
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem 2rem;
  transition: all var(--transition-normal);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  position: relative;
  overflow: hidden;
}

.battle-strip:hover {
  border-color: var(--border-light);
  transform: translateY(-3px);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.7), 0 0 30px rgba(2, 132, 199, 0.08);
}

.battle-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.35rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: wrap;
  gap: 0.75rem;
}

.battle-title-area {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.battle-num {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--brand-light);
  background: rgba(2, 132, 199, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.battle-title-text {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.battle-title {
  font-size: 1.1875rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0;
  letter-spacing: -0.01em;
}

.battle-subtag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--brand-light);
  font-weight: 500;
}

.battle-gap-pill {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #fca5a5;
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.35rem 0.875rem;
  border-radius: var(--radius-full);
}

.battle-columns {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1.25rem;
  align-items: stretch;
}

.battle-col-swe {
  background: rgba(239, 68, 68, 0.03);
  border: 1px solid rgba(239, 68, 68, 0.18);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.battle-col-fde {
  background: rgba(16, 185, 129, 0.04);
  border: 1px solid rgba(16, 185, 129, 0.28);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: inset 0 0 25px rgba(16, 185, 129, 0.03);
}

.battle-col-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.battle-col-swe .battle-col-label {
  color: #f87171;
}

.battle-col-fde .battle-col-label {
  color: #34d399;
}

.battle-desc-text {
  font-size: 0.875rem;
  line-height: 1.65;
  margin-bottom: 1.15rem;
  color: var(--text-secondary);
}

.battle-col-fde .battle-desc-text {
  color: #f1f5f9;
}

.battle-col-fde .battle-desc-text strong {
  color: var(--brand-light);
}

.battle-consequence {
  font-size: 0.8125rem;
  padding: 0.55rem 0.85rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
  line-height: 1.45;
}

.battle-col-swe .battle-consequence {
  background: rgba(239, 68, 68, 0.08);
  color: #fca5a5;
  border-left: 3px solid #ef4444;
}

.battle-col-fde .battle-consequence {
  background: rgba(16, 185, 129, 0.1);
  color: #6ee7b7;
  border-left: 3px solid #10b981;
}

.battle-vs-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.8125rem;
  color: var(--text-muted);
  padding: 0 0.25rem;
  user-select: none;
  position: relative;
}

.battle-vs-divider::before {
  content: '';
  position: absolute;
  top: 15%;
  bottom: 15%;
  width: 1px;
  background: var(--border-subtle);
  z-index: 1;
}

.battle-vs-divider span {
  position: relative;
  z-index: 2;
  background: #090d16;
  padding: 0.35rem 0.5rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
}

@media (max-width: 960px) {
  .battle-columns {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .battle-vs-divider {
    display: none;
  }
  .battle-strip {
    padding: 1.25rem;
  }
}

/* Socratic Pedagogy & 5-Whys Methodology */
.pedagogy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  margin-top: 2.5rem;
  align-items: start;
}

.pedagogy-cards-col {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.pedagogy-step-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  transition: all var(--transition-fast);
}

.pedagogy-step-card:hover {
  border-color: var(--border-focus);
  background: var(--bg-surface-elevated);
}

.step-number {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--brand-light);
  background: rgba(2, 132, 199, 0.12);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.step-info h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.step-info p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0;
}

/* Socratic Live Dialog Sim */
.socratic-sim-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  position: relative;
}

.sim-box-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  padding-bottom: 0.875rem;
  border-bottom: 1px solid var(--border-subtle);
}

.sim-box-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 0.9375rem;
  color: var(--text-primary);
}

.sim-flow {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.sim-bubble {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  line-height: 1.5;
}

.sim-bubble.client {
  background: rgba(30, 41, 59, 0.7);
  border-left: 3px solid var(--text-muted);
  color: var(--text-secondary);
}

.sim-bubble.coach {
  background: rgba(2, 132, 199, 0.12);
  border-left: 3px solid var(--brand-light);
  color: #e0f2fe;
}

.sim-bubble strong {
  display: block;
  font-size: 0.75rem;
  margin-bottom: 0.25rem;
  font-family: var(--font-mono);
}

.sim-bubble.client strong { color: var(--text-muted); }
.sim-bubble.coach strong { color: var(--brand-light); }

.sim-conclusion {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  background: rgba(16, 185, 129, 0.1);
  border: 1px dashed #10b981;
  border-radius: var(--radius-md);
  color: #34d399;
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.4;
}

/* Admission Callout Banner */
.admission-banner {
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.18), rgba(15, 23, 42, 0.98));
  border: 1px solid rgba(56, 189, 248, 0.35);
  border-radius: var(--radius-lg);
  padding: 2.75rem 2rem;
  margin-top: 3.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px -15px rgba(2, 132, 199, 0.25);
}

.admission-banner h3 {
  font-size: 1.625rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.admission-banner p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  max-width: 720px;
  margin: 0 auto 1.75rem;
  line-height: 1.65;
}

/* ==========================================================================
   Big 4 Giant FDE Benchmarks (中美四大厂 FDE 准入标准)
   ========================================================================== */
.big4-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.big4-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.big4-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-light);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6);
}

.big4-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.big4-name {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.big4-role-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--brand-light);
  background: rgba(2, 132, 199, 0.12);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  margin-top: 0.25rem;
  display: inline-block;
}

.big4-salary {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 800;
  color: #34d399;
  background: rgba(16, 185, 129, 0.1);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
}

.big4-team-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1rem;
}

.big4-tech-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
  font-size: 0.75rem;
}

.big4-tech-item {
  display: flex;
  gap: 0.4rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.big4-tech-item strong {
  color: var(--text-primary);
  flex-shrink: 0;
}

.big4-bottom-tag {
  font-size: 0.6875rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
  padding-top: 0.75rem;
  font-family: var(--font-mono);
}

/* ==========================================================================
   Full FDE 4-Dimension Hard Skill Tree (4 维全景硬核技能树)
   ========================================================================== */
.skill-tree-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.skill-tree-col {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.25rem;
  display: flex;
  flex-direction: column;
}

.skill-tree-header {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.875rem;
  border-bottom: 1px solid var(--border-subtle);
}

.skill-tree-icon {
  font-size: 1.35rem;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: rgba(2, 132, 199, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
}

.skill-tree-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
}

.skill-tree-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  flex: 1;
}

.skill-tree-list li {
  font-size: 0.8125rem;
  line-height: 1.45;
  color: var(--text-secondary);
  position: relative;
  padding-left: 1rem;
}

.skill-tree-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--brand-light);
  font-size: 0.75rem;
}

.skill-tree-list li strong {
  color: var(--text-primary);
}

/* ==========================================================================
   FDE 6 Big Personality Traits & Soft Skills ("特种兵心智模型")
   ========================================================================== */
.trait-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.trait-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.35rem 1.5rem;
  transition: all var(--transition-fast);
}

.trait-card:hover {
  border-color: var(--border-focus);
  background: var(--bg-surface-elevated);
  transform: translateY(-2px);
}

.trait-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.trait-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.trait-en {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--brand-light);
}

.trait-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 0.75rem;
}

.trait-why {
  font-size: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: rgba(15, 23, 42, 0.7);
  border-left: 2px solid var(--brand-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-muted);
  line-height: 1.45;
}

.trait-why strong {
  color: var(--brand-light);
}

@media (max-width: 1024px) {
  .skill-tree-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ==========================================================================
   Mentorship & Guild Ecosystem (战地行会与师徒制生态)
   ========================================================================== */
.guild-ecosystem-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem;
  margin-top: 2.5rem;
}

.guild-benefit-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
}

.guild-benefit-card:hover {
  border-color: var(--border-light);
  transform: translateY(-3px);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6);
}

.guild-benefit-header {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.guild-benefit-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  background: rgba(2, 132, 199, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
  flex-shrink: 0;
}

.guild-benefit-title {
  font-size: 1.1875rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0;
}

.guild-benefit-sub {
  font-size: 0.75rem;
  color: var(--brand-light);
  font-family: var(--font-mono);
}

.guild-benefit-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--text-secondary);
}

.guild-benefit-list li {
  position: relative;
  padding-left: 1.25rem;
}

.guild-benefit-list li::before {
  content: '🛡️';
  position: absolute;
  left: 0;
  font-size: 0.75rem;
}

.guild-benefit-list strong {
  color: var(--text-primary);
}

.guild-ladder-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.guild-ladder-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
  position: relative;
}

.guild-ladder-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-light);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6);
}

.guild-ladder-card.featured {
  background: linear-gradient(145deg, rgba(15, 23, 42, 0.98), rgba(245, 158, 11, 0.05));
  border: 1px solid rgba(245, 158, 11, 0.35);
  box-shadow: 0 10px 30px -10px rgba(245, 158, 11, 0.15);
}

.guild-tier-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.6875rem;
  font-weight: 800;
  font-family: var(--font-mono);
  text-transform: uppercase;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
  align-self: flex-start;
}

.guild-tier-1 {
  color: #38bdf8;
  background: rgba(2, 132, 199, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
}

.guild-tier-2 {
  color: #34d399;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.25);
}

.guild-tier-3 {
  color: #fbbf24;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.guild-role-name {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.guild-req {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.875rem;
  line-height: 1.45;
}

.guild-income-box {
  background: rgba(16, 185, 129, 0.08);
  border-left: 3px solid #10b981;
  padding: 0.6rem 0.875rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.75rem;
  color: #a7f3d0;
  font-weight: 600;
  margin-bottom: 1rem;
  line-height: 1.45;
}

.guild-duties {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 1rem;
  flex: 1;
}

@media (max-width: 960px) {
  .guild-ecosystem-grid,
  .guild-ladder-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   The π-Shaped Mastery & Industry Specialization (π-型专精演进体系)
   ========================================================================== */
.pi-tracks-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.pi-track-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
  position: relative;
}

.pi-track-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-light);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6);
}

.pi-track-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  padding-bottom: 0.875rem;
  border-bottom: 1px solid var(--border-subtle);
}

.pi-track-icon {
  font-size: 1.5rem;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: rgba(2, 132, 199, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(56, 189, 248, 0.25);
  flex-shrink: 0;
}

.pi-track-title {
  font-size: 1.0625rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 0;
}

.pi-track-sub {
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  color: var(--brand-light);
}

.pi-track-skills {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

.pi-track-skills li {
  position: relative;
  padding-left: 1.15rem;
}

.pi-track-skills li::before {
  content: '⚡';
  position: absolute;
  left: 0;
  font-size: 0.6875rem;
}

.pi-track-skills strong {
  color: var(--text-primary);
}

.pi-track-scenario {
  font-size: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: rgba(15, 23, 42, 0.7);
  border-left: 2px solid var(--brand-light);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-muted);
  line-height: 1.45;
}

.industry-tracks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}

.industry-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
}

.industry-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-focus);
  box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.6);
  background: var(--bg-surface-elevated);
}

.industry-card-header {
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.industry-icon {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.industry-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.industry-tagline {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: #34d399;
}

.industry-points {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.industry-points li {
  position: relative;
  padding-left: 1rem;
}

.industry-points li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--brand-light);
}

.industry-points strong {
  color: var(--text-primary);
}

.industry-barrier {
  font-size: 0.6875rem;
  padding: 0.4rem 0.6rem;
  background: rgba(245, 158, 11, 0.08);
  border-left: 2px solid #f59e0b;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: #fde68a;
  line-height: 1.4;
}

@media (max-width: 1024px) {
  .pi-tracks-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   GEO & AI Search Direct-Answer FAQ Knowledge Cards
   ========================================================================== */
.geo-faq-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.geo-faq-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
  position: relative;
}

.geo-faq-card:hover {
  border-color: var(--border-focus);
  transform: translateY(-2px);
  box-shadow: 0 16px 32px -8px rgba(0, 0, 0, 0.5);
  background: var(--bg-surface-elevated);
}

.geo-faq-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--brand-light);
  background: rgba(2, 132, 199, 0.12);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.875rem;
  align-self: flex-start;
}

.geo-faq-q {
  font-size: 1.0625rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.875rem;
  line-height: 1.45;
  letter-spacing: -0.01em;
}

.geo-faq-a {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.65;
  flex: 1;
}

.geo-faq-a strong {
  color: #f1f5f9;
  font-weight: 700;
}

.geo-faq-cite {
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
  margin-top: 4.5rem;
  padding-top: 3rem;
  border-top: 1px solid var(--border-subtle);
}

@media (max-width: 960px) {
  .pedagogy-grid {
    grid-template-columns: 1fr;
  }
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--brand-light);
  font-family: var(--font-mono);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* ==========================================================================
   GEO Core Definition Card (Generative Engine Optimization Block)
   ========================================================================== */
.geo-summary-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin: 2rem auto 4rem;
  max-width: 960px;
  position: relative;
}

.geo-summary-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.75rem;
}

.geo-summary-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--brand-light);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.geo-summary-badge {
  font-size: 0.75rem;
  background: var(--bg-surface-elevated);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

.geo-summary-text {
  font-size: 1rem;
  color: var(--text-primary);
  line-height: 1.75;
}

/* ==========================================================================
   Cards, Grids & Features
   ========================================================================== */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3.5rem;
}

.section-tag {
  color: var(--brand-light);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--text-secondary);
}

.card-grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.card-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.card-grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  border-color: var(--border-light);
  transform: translateY(-3px);
  background: var(--bg-surface-elevated);
}

.feature-icon {
  width: 3rem;
  height: 3rem;
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  border: 1px solid var(--border-light);
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.feature-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  background: var(--bg-main);
  border: 1px solid var(--border-subtle);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}

/* ==========================================================================
   Comparison Table
   ========================================================================== */
.table-container {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
  margin-top: 2rem;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9375rem;
}

.comparison-table th, .comparison-table td {
  padding: 1.125rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.comparison-table th {
  background: var(--bg-surface-elevated);
  font-weight: 700;
  color: var(--text-primary);
}

.comparison-table tr:last-child td {
  border-bottom: none;
}

.comparison-table tr:hover td {
  background: rgba(30, 41, 59, 0.5);
}

.highlight-col {
  color: var(--brand-light);
  font-weight: 600;
}

/* ==========================================================================
   Assessment & Radar Section
   ========================================================================== */
.quiz-wrapper {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  max-width: 800px;
  margin: 0 auto;
}

.quiz-progress {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.progress-bar-bg {
  width: 100%;
  height: 6px;
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-top: 0.5rem;
}

.progress-bar-fill {
  height: 100%;
  background: var(--brand-light);
  width: 10%;
  transition: width var(--transition-normal);
}

.quiz-question-card {
  margin-bottom: 2rem;
}

.quiz-category {
  font-size: 0.8125rem;
  color: var(--brand-light);
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.quiz-question {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.quiz-option-btn {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9375rem;
  cursor: pointer;
  text-align: left;
  transition: all var(--transition-fast);
}

.quiz-option-btn:hover {
  border-color: var(--brand-light);
  background: #334155;
}

.quiz-option-btn.selected {
  border-color: var(--brand-light);
  background: rgba(56, 189, 248, 0.15);
  box-shadow: 0 0 0 1px var(--brand-light), 0 4px 12px rgba(56, 189, 248, 0.15);
  transform: translateX(4px);
}

.quiz-option-btn.selected .option-prefix {
  background: var(--brand-primary);
  color: #ffffff;
}

.option-prefix {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: var(--bg-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8125rem;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.radar-result-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2rem;
}

.radar-canvas-container {
  width: 100%;
  max-width: 440px;
  height: 380px;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto;
}

.radar-canvas-container canvas {
  max-width: 100%;
  height: auto;
}

/* ==========================================================================
   Forms & Inputs
   ========================================================================== */
.form-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  max-width: 680px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9375rem;
  transition: border-color var(--transition-fast);
}

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

.form-checkbox-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.form-checkbox-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  cursor: pointer;
}

/* ==========================================================================
   Encyclopedia / Wiki Article Layout
   ========================================================================== */
.wiki-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 3rem;
  align-items: start;
}

.wiki-sidebar {
  position: sticky;
  top: 5.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.wiki-nav-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.wiki-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.wiki-nav-link {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  display: block;
  padding: 0.4rem 0.5rem;
  border-radius: var(--radius-sm);
}

.wiki-nav-link:hover, .wiki-nav-link.active {
  background: var(--bg-surface-elevated);
  color: var(--brand-light);
}

.wiki-article {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 3rem;
}

.wiki-article h1 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.wiki-article h2.wiki-term-title,
.wiki-article > h2:first-of-type {
  font-size: 1.875rem;
  font-weight: 800;
  margin-top: 0.75rem;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
  border-bottom: none;
  padding-bottom: 0;
  color: var(--text-primary);
}

.wiki-article h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.5rem;
}

.wiki-article h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.5rem;
  color: var(--text-primary);
}

.wiki-article h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--brand-light);
}

.wiki-article p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1.25rem;
}

.consent-group {
  margin: 1.25rem 0 1.5rem;
  padding: 0.75rem 1rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.consent-label {
  display: flex;
  align-items: flex-start;
  gap: 0.625rem;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
  cursor: pointer;
}

.consent-label input[type="checkbox"] {
  margin-top: 0.2rem;
  accent-color: var(--brand-light);
  flex-shrink: 0;
}

.success-steps-box {
  margin-top: 1.5rem;
  text-align: left;
  background: var(--bg-main);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
}

.success-steps-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--brand-light);
  margin-bottom: 0.75rem;
}

.success-steps-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-left: 0;
  margin: 0;
}

.success-step-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.step-badge {
  width: 1.35rem;
  height: 1.35rem;
  border-radius: 50%;
  background: var(--brand-primary);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.wiki-article ul, .wiki-article ol {
  margin-left: 1.5rem;
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
}

.wiki-article li {
  margin-bottom: 0.5rem;
  line-height: 1.7;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  margin-top: auto;
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-subtle);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9375rem;
  margin-top: 1rem;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  letter-spacing: 0.05em;
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-col a {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.footer-col a:hover {
  color: var(--brand-light);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

/* ==========================================================================
   3-Pillar Warfighter Training Ecosystem Styling
   ========================================================================== */
.ecosystem-pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
  align-items: stretch;
}

@media (max-width: 1024px) {
  .ecosystem-pillars-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
}

.pillar-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.pillar-card:hover {
  transform: translateY(-4px);
  border-color: var(--brand-light);
  box-shadow: 0 12px 32px rgba(2, 132, 199, 0.15);
}

.pillar-card.featured {
  background: linear-gradient(180deg, rgba(15, 23, 42, 0.95), rgba(139, 92, 246, 0.06));
  border: 1px solid rgba(139, 92, 246, 0.35);
  box-shadow: 0 8px 30px rgba(139, 92, 246, 0.12);
}

.pillar-card.featured:hover {
  border-color: #c084fc;
  box-shadow: 0 14px 40px rgba(139, 92, 246, 0.25);
}

.pillar-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 700;
  background: rgba(2, 132, 199, 0.12);
  color: var(--brand-light);
  border: 1px solid rgba(56, 189, 248, 0.25);
  margin-bottom: 1.25rem;
  align-self: flex-start;
}

.pillar-badge.featured {
  background: rgba(139, 92, 246, 0.18);
  color: #c084fc;
  border-color: rgba(192, 132, 252, 0.4);
}

.pillar-badge.danger {
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border-color: rgba(245, 158, 11, 0.35);
}

.pillar-header-group {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  margin-bottom: 0.75rem;
}

.pillar-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
}

.pillar-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.3;
  margin: 0;
}

.pillar-sub {
  display: block;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.pillar-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.pillar-features-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.pillar-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.45;
  background: var(--bg-surface-elevated);
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.pillar-feature-item strong {
  color: var(--text-primary);
}

.pillar-feature-icon {
  color: #34d399;
  font-weight: 800;
  flex-shrink: 0;
  font-size: 0.875rem;
}

.agent-mini-box {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(139, 92, 246, 0.25);
  border-radius: var(--radius-md);
  padding: 0.875rem;
  margin-bottom: 0.75rem;
}

.agent-mini-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 800;
  color: #c084fc;
  margin-bottom: 0.35rem;
}

.agent-mini-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin: 0 0 0.5rem 0;
}

.agent-mini-tags {
  display: flex;
  gap: 0.35rem;
  flex-wrap: wrap;
}

.agent-code-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  background: rgba(2, 132, 199, 0.15);
  color: var(--brand-light);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  border: 1px solid rgba(56, 189, 248, 0.2);
}

.pillar-footer-action {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
}

.pillar-link {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--brand-light);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all var(--transition-fast);
}

.pillar-link:hover {
  gap: 0.6rem;
  text-decoration: underline;
}

/* ==========================================================================
   5 Golden Best Practices Absorbed & 8-Step SOP Styling
   ========================================================================== */
.best-practices-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.best-practice-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.best-practice-card:hover {
  transform: translateY(-4px);
  border-color: var(--brand-primary);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

.best-practice-header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
}

.best-practice-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(2, 132, 199, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.best-practice-bench {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 700;
  color: var(--brand-light);
  margin-bottom: 0.25rem;
}

.best-practice-title {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.35;
}

.best-practice-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

.best-practice-bullets {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.best-practice-bullets li {
  position: relative;
  padding-left: 1.25rem;
  line-height: 1.5;
}

.best-practice-bullets li::before {
  content: "⚡";
  position: absolute;
  left: 0;
  font-size: 0.75rem;
}

.best-practice-link {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--brand-light);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: gap var(--transition-fast);
}

.best-practice-link:hover {
  gap: 0.6rem;
  text-decoration: underline;
}

/* ==========================================================================
   Battle Stories & Alumni Success (Social Proof Styling)
   ========================================================================== */
.alumni-stories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.story-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
  position: relative;
}

.story-card:hover {
  transform: translateY(-4px);
  border-color: #34d399;
  box-shadow: 0 12px 32px rgba(16, 185, 129, 0.15);
}

.story-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.story-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.15);
  border: 2px solid rgba(52, 211, 153, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
}

.story-name {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--text-primary);
}

.story-tag {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 9999px;
  background: rgba(16, 185, 129, 0.15);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.3);
  margin-top: 0.2rem;
}

.story-leap-box {
  background: var(--bg-surface-elevated);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  font-size: 0.8125rem;
  line-height: 1.5;
  border-left: 3px solid #34d399;
}

.story-leap-from {
  color: var(--text-muted);
}

.story-leap-to {
  color: #34d399;
  font-weight: 700;
}

.story-body {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.story-body p {
  margin-bottom: 0.6rem;
}

.story-metric-box {
  background: rgba(2, 132, 199, 0.08);
  border: 1px solid rgba(56, 189, 248, 0.2);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.85rem;
  font-size: 0.8125rem;
  color: var(--brand-light);
  font-weight: 700;
  margin-top: auto;
}

/* ==========================================================================
   E-E-A-T Verified Citations & Editorial Metadata (SEO/GEO Authority System)
   ========================================================================== */
.eeat-meta-box {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
  font-size: 0.875rem;
}

.eeat-meta-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.75rem;
  margin-bottom: 0.75rem;
}

.eeat-author-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-primary);
  font-weight: 600;
}

.eeat-date-badge {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.eeat-citation-section {
  margin-top: 2.5rem;
  padding: 1.5rem;
  background: var(--bg-surface-elevated);
  border-left: 4px solid var(--brand-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.eeat-citation-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.eeat-citations-list {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.8;
}

.eeat-citations-list a {
  color: var(--brand-light);
  text-decoration: underline;
  word-break: break-all;
}

.eeat-boundary-box {
  margin-top: 1rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--border-subtle);
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.6;
}




/* ==========================================================================
   Course Center & Lesson Viewer Design System
   ========================================================================== */

/* 1. Course Hero Card & Pricing Strip */
.course-hero-card {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.7) 0%, rgba(15, 23, 42, 0.9) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  position: relative;
  overflow: hidden;
}

.course-hero-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 1.5px;
  color: var(--brand-light);
  background: rgba(2, 132, 199, 0.15);
  border: 1px solid rgba(2, 132, 199, 0.4);
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}

.course-hero-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 0.85rem;
  line-height: 1.25;
}

.course-hero-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 800px;
  line-height: 1.65;
  margin-bottom: 2rem;
}

.course-pricing-strip {
  display: flex;
  align-items: center;
  gap: 2rem;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.75rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.price-box {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
}

.current-price {
  font-size: 2.25rem;
  font-weight: 900;
  color: #fbbf24;
}

.original-price {
  font-size: 1.1rem;
  color: var(--text-muted);
  text-decoration: line-through;
}

.discount-pill {
  font-size: 0.75rem;
  font-weight: 700;
  background: rgba(239, 68, 68, 0.2);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.4);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}

.value-tags {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.v-tag {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
}

.course-hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* 2. Member Progress Dashboard Card */
.member-progress-card {
  background: rgba(30, 41, 59, 0.6);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin-top: 1.5rem;
}

.progress-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.member-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.status-dot {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 8px #10b981;
}

.progress-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* 3. Curriculum Modules & Lesson Cards */
.curriculum-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  margin-top: 1.5rem;
}

.curriculum-module-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color var(--transition-fast);
}

.curriculum-module-card:hover {
  border-color: var(--brand-primary);
}

.module-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.module-title-wrap h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--brand-light);
  margin-bottom: 0.35rem;
}

.module-tagline {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.lesson-list-grid {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.lesson-row-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-fast);
  gap: 1rem;
}

.lesson-row-card:hover {
  border-color: var(--brand-light);
  transform: translateX(4px);
}

.lesson-row-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
}

.lesson-check-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1.5px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: transparent;
  flex-shrink: 0;
}

.lesson-check-icon.completed {
  background: #10b981;
  border-color: #10b981;
  color: #fff;
}

.lesson-title-text {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.4;
}

.lesson-row-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

/* 4. Lesson Workspace & Two-Column Layout */
.lesson-viewer-body {
  background: var(--bg-body);
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.lesson-header {
  height: 3.75rem;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
}

.lesson-header-left, .lesson-header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.drawer-toggle-btn {
  display: none;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  cursor: pointer;
}

.lesson-workspace {
  display: flex;
  flex: 1;
  position: relative;
}

/* Left Sidebar Directory Tree */
.lesson-sidebar {
  width: 290px;
  background: var(--bg-surface);
  border-right: 1px solid var(--border-color);
  height: calc(100vh - 3.75rem);
  position: sticky;
  top: 3.75rem;
  overflow-y: auto;
  padding: 1.25rem 1rem;
  flex-shrink: 0;
}

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.5rem;
}

.sidebar-progress-bar {
  height: 4px;
  background: var(--bg-surface-elevated);
  border-radius: 2px;
  overflow: hidden;
  margin-bottom: 1.25rem;
}

.sidebar-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #38bdf8, #10b981);
  transition: width 0.3s ease;
}

.curriculum-tree-nav {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.tree-module-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.tree-module-heading {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 0.25rem 0.5rem;
}

.tree-lesson-link {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.6rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  line-height: 1.35;
  transition: all var(--transition-fast);
}

.tree-lesson-link:hover {
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
}

.tree-lesson-link.active {
  background: rgba(2, 132, 199, 0.18);
  color: var(--brand-light);
  font-weight: 700;
  border-left: 3px solid var(--brand-primary);
}

/* Right Main Content Canvas */
.lesson-main-content {
  flex: 1;
  max-width: 920px;
  margin: 0 auto;
  padding: 2.5rem 2rem 5rem 2rem;
  width: 100%;
}

.lesson-article-header {
  margin-bottom: 1.75rem;
}

.lesson-article-title {
  font-size: 1.85rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
}

.lesson-callout-card {
  background: rgba(2, 132, 199, 0.08);
  border-left: 4px solid var(--brand-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
}

.callout-header {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--brand-light);
  margin-bottom: 0.5rem;
}

.callout-text {
  font-size: 0.925rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 0;
}

.objectives-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
}

.objectives-list {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

/* Section Markdown & Code Blocks */
.lesson-sections-container {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  margin-bottom: 2.5rem;
  line-height: 1.75;
  font-size: 0.975rem;
  color: var(--text-secondary);
}

.lesson-sections-container h2,
.lesson-sections-container h3,
.lesson-sections-container h4 {
  color: var(--brand-light);
  margin-top: 1.25rem;
  margin-bottom: 0.75rem;
  font-weight: 800;
}

.lesson-sections-container p {
  margin-bottom: 1rem;
}

.lesson-sections-container ul, 
.lesson-sections-container ol {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.lesson-sections-container li {
  margin-bottom: 0.4rem;
}

/* Code Container with Copy Button */
.code-block-wrapper {
  background: #090d16;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 1.25rem 0;
}

.code-block-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #111827;
  padding: 0.5rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.code-filename {
  font-family: monospace;
  color: var(--brand-light);
}

.code-copy-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.code-copy-btn:hover {
  background: var(--bg-surface-elevated);
  color: #fff;
}

.code-block-pre {
  margin: 0;
  padding: 1rem 1.25rem;
  overflow-x: auto;
  font-family: Consolas, Monaco, "Courier New", monospace;
  font-size: 0.875rem;
  line-height: 1.6;
  color: #e2e8f0;
}

/* Downloadable Assets Card */
.downloads-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
}

.downloads-header {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--brand-light);
  margin-bottom: 0.75rem;
}

.downloads-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.download-item-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--text-primary);
  font-size: 0.875rem;
  transition: all var(--transition-fast);
}

.download-item-btn:hover {
  border-color: var(--brand-primary);
}

/* Challenge / Practice Quiz Card */
.challenge-card {
  background: linear-gradient(135deg, rgba(30, 41, 59, 0.4) 0%, rgba(15, 23, 42, 0.6) 100%);
  border: 1px solid rgba(245, 158, 11, 0.4);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 2.5rem;
}

.challenge-header {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fbbf24;
  margin-bottom: 0.75rem;
}

.challenge-options {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.challenge-opt-btn {
  text-align: left;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.challenge-opt-btn:hover {
  border-color: var(--brand-primary);
  color: var(--text-primary);
}

.challenge-opt-btn.correct {
  background: rgba(16, 185, 129, 0.15);
  border-color: #10b981;
  color: #34d399;
}

.challenge-opt-btn.wrong {
  background: rgba(239, 68, 68, 0.15);
  border-color: #ef4444;
  color: #f87171;
}

.challenge-feedback {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--text-secondary);
}

/* Bottom Nav & Navigation */
.lesson-bottom-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 1rem;
}

/* Paywall / Locked View */
.lesson-locked-container {
  text-align: center;
  padding: 4rem 1.5rem;
  background: var(--bg-surface);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  margin: 2rem 0;
}

.locked-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

/* 5. Member Auth Modal & Toast */
.auth-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.auth-modal-box {
  background: #111827;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 440px;
  padding: 2rem;
  position: relative;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.6);
}

.auth-modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.25rem;
  cursor: pointer;
}

.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: #1e293b;
  border: 1px solid var(--brand-primary);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.25rem;
  color: #fff;
  font-size: 0.9rem;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  animation: toastIn 0.3s ease;
}

@keyframes toastIn {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Mobile Sticky Footer */
.mobile-sticky-footer {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 3.5rem;
  background: #111827;
  border-top: 1px solid var(--border-color);
  z-index: 90;
  align-items: center;
  justify-content: space-around;
  padding: 0 0.75rem;
}

.mobile-nav-action-btn {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

.mobile-nav-action-btn.primary {
  background: var(--brand-primary);
  border-color: var(--brand-primary);
  color: #fff;
  font-weight: 700;
}

/* Skeleton Loaders */
.skeleton-line {
  background: linear-gradient(90deg, #1e293b 25%, #334155 50%, #1e293b 75%);
  background-size: 200% 100%;
  animation: skeletonPulse 1.5s infinite;
  border-radius: 4px;
}

@keyframes skeletonPulse {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Responsive Mobile Rules for Lesson Viewer */
@media (max-width: 768px) {
  .drawer-toggle-btn {
    display: flex;
    align-items: center;
    gap: 0.3rem;
  }
  .lesson-sidebar {
    position: fixed;
    top: 3.75rem;
    left: -320px;
    width: 300px;
    z-index: 95;
    transition: left 0.3s ease;
    box-shadow: 10px 0 25px rgba(0, 0, 0, 0.5);
  }
  .lesson-sidebar.open {
    left: 0;
  }
  .sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 92;
  }
  .sidebar-backdrop.active {
    display: block;
  }
  .lesson-main-content {
    padding: 1.5rem 1rem 5rem 1rem;
  }
  .mobile-sticky-footer {
    display: flex;
  }
  .lesson-header-breadcrumb {
    display: none;
  }
}