/*
Theme Name: Vardan Pathak Portfolio
Theme URI: https://vptech.online/
Author: Vardan Pathak
Author URI: https://vptech.online/
Description: Custom WordPress theme for Vardan Pathak — AI Architect, Strategist, Author, and Researcher. Features high-performance architecture showcases, dynamic cognitive frameworks, empirical evidence matrices, published book libraries, and an interactive 8-dimension AI system diagnostic engine.
Version: 1.0.7
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: vp-portfolio
Tags: portfolio, grid-layout, custom-menu, featured-images, full-width-template, theme-options, translation-ready
*/

/* ==========================================================================
   VARDAN PATHAK PORTFOLIO DESIGN SYSTEM & STYLESHEET
   ========================================================================== */

:root {
  /* Color Palette */
  --primary-blue: #0052FF;
  --primary-blue-hover: #0043D4;
  --primary-blue-light: #EBF2FF;
  --accent-cyan: #0EA5E9;
  --accent-green: #10B981;
  --navy-dark: #0B132B;
  --navy-card: #0F172A;
  --slate-900: #0F172A;
  --slate-800: #1E293B;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748B;
  --slate-400: #94A3B8;
  --slate-300: #CBD5E1;
  --slate-200: #E2E8F0;
  --slate-100: #F1F5F9;
  --slate-50:  #F8FAFC;
  --white:      #FFFFFF;

  /* Typography */
  --font-heading: 'Space Grotesk', 'Plus Jakarta Sans', -apple-system, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, sans-serif;

  /* Transitions & Shadows */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 25px rgba(15, 23, 42, 0.12);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--white);
  color: var(--slate-900);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* Layout Container */
.section-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   HEADER NAVIGATION
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--slate-200);
}

.header-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.hexagon-icon {
  width: 38px;
  height: 38px;
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
}

.hex-svg {
  width: 100%;
  height: 100%;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: var(--slate-900);
  line-height: 1.2;
}

.brand-tagline {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--slate-500);
  text-transform: uppercase;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
}

.main-nav li {
  list-style: none;
  display: inline-flex;
  align-items: center;
  margin: 0;
  padding: 0;
}

.main-nav a {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--slate-700);
  transition: color var(--transition-fast);
}

.main-nav a:hover {
  color: var(--primary-blue);
}

.mobile-nav-menu {
  list-style: none;
}

.mobile-nav-menu li {
  list-style: none;
  margin: 0;
  padding: 0;
  display: block;
}

/* CTA Buttons */
.cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  transition: all var(--transition-fast);
}

.primary-btn {
  background-color: var(--primary-blue);
  color: var(--white);
}

.primary-btn:hover {
  background-color: var(--primary-blue-hover);
  box-shadow: 0 4px 14px rgba(0, 82, 255, 0.3);
  transform: translateY(-1px);
}

.secondary-btn {
  border: 1.5px solid var(--primary-blue);
  color: var(--primary-blue);
  background-color: transparent;
}

.secondary-btn:hover {
  background-color: var(--primary-blue-light);
  transform: translateY(-1px);
}

.large-btn {
  padding: 14px 28px;
  font-size: 0.85rem;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */

.hero-section {
  padding: 48px 0 64px 0;
  background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
  border-bottom: 1px solid var(--slate-200);
}

.hero-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-headline {
  font-family: var(--font-heading);
  font-size: 1.65rem;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--slate-900);
  margin-bottom: 16px;
}

.hero-subtext {
  font-size: 1.05rem;
  color: var(--slate-600);
  line-height: 1.6;
  margin-bottom: 32px;
  max-width: 520px;
}

.hero-metrics {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-bottom: 36px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--slate-200);
}

.metric-number {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-blue);
  display: block;
  line-height: 1;
  margin-bottom: 6px;
}

.metric-label {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--slate-600);
  letter-spacing: 0.04em;
  line-height: 1.3;
}

.metric-divider {
  width: 1px;
  height: 44px;
  background-color: var(--slate-300);
}

.trusted-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.trusted-title {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--slate-400);
}

.trusted-logos {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.logo-item {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--slate-500);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  opacity: 0.85;
}

/* Hero Featured Image Showcase */
.hero-diagram-container.hero-featured-image-container {
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 0;
  box-shadow: none;
  position: relative;
  overflow: visible;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 460px;
  width: 100%;
  margin: 0 auto;
}

.hero-diagram-container.hero-featured-image-container:hover {
  transform: none;
  box-shadow: none;
  border-color: transparent;
}

.hero-book-showcase {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: transparent;
  border: 1px solid var(--slate-200);
  box-shadow: 0 16px 36px -8px rgba(15, 23, 42, 0.1);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), border-color var(--transition-normal);
}

.hero-book-showcase:hover {
  transform: translateY(-4px);
  border-color: var(--primary-blue);
  box-shadow: 0 24px 44px -8px rgba(0, 82, 255, 0.18);
}

.hero-book-showcase a {
  display: block;
  width: 100%;
  height: 100%;
}

.hero-featured-img {
  width: 100%;
  height: 100%;
  aspect-ratio: 1 / 1;
  object-fit: contain;
  border-radius: inherit;
  display: block;
  transition: transform 0.4s ease;
}

.hero-book-showcase:hover .hero-featured-img {
  transform: scale(1.02);
}

@media (max-width: 900px) {
  .hero-diagram-container.hero-featured-image-container {
    width: 100%;
    max-width: 100%;
    margin: 24px 0 0 0;
    padding: 0;
    border-radius: 0;
    overflow: visible;
  }

  .hero-book-showcase {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: var(--radius-lg);
    padding: 0;
  }

  .hero-featured-img {
    width: 100%;
    height: 100%;
    max-height: none;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    display: block;
  }
}

@media (max-width: 680px) {
  .hero-section {
    padding: 24px 0 32px 0;
  }

  .hero-container {
    padding: 0 16px;
    gap: 24px;
  }

  .hero-diagram-container.hero-featured-image-container {
    width: 100%;
    max-width: 100%;
    margin: 16px 0 0 0;
    padding: 0;
  }

  .hero-book-showcase {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: var(--radius-lg);
    padding: 0;
  }

  .hero-featured-img {
    width: 100%;
    height: 100%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
    display: block;
  }
}

@media (max-width: 480px) {
  .hero-section {
    padding: 20px 0 28px 0;
  }

  .hero-container {
    padding: 0 14px;
    gap: 20px;
  }

  .hero-diagram-container.hero-featured-image-container {
    width: 100%;
    max-width: 100%;
    margin: 12px 0 0 0;
    padding: 0;
  }

  .hero-book-showcase {
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: var(--radius-md);
  }
}

.arch-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr 0.8fr;
  gap: 16px;
  align-items: center;
}

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

.arch-box {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.arch-box:hover {
  border-color: var(--primary-blue);
  box-shadow: 0 2px 8px rgba(0, 82, 255, 0.1);
  transform: translateX(2px);
}

.highlight-box {
  background-color: var(--primary-blue-light);
  border-color: var(--primary-blue);
}

.arch-box-icon {
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.arch-box-info {
  display: flex;
  flex-direction: column;
}

.arch-box-title {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--slate-900);
  letter-spacing: 0.02em;
}

.arch-box-sub {
  font-size: 0.58rem;
  color: var(--slate-500);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 140px;
}

.middle-flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.flow-step {
  width: 100%;
  padding: 8px 10px;
  background-color: var(--slate-50);
  border: 1px dashed var(--slate-300);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 8px;
}

.active-step {
  background-color: var(--primary-blue);
  color: var(--white);
  border-style: solid;
  border-color: var(--primary-blue);
}

.active-step .flow-title, .active-step .flow-desc {
  color: var(--white);
}

.active-step .flow-icon {
  color: var(--white);
}

.flow-icon {
  color: var(--primary-blue);
  display: flex;
  align-items: center;
}

.flow-text {
  display: flex;
  flex-direction: column;
}

.flow-title {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--slate-800);
}

.flow-desc {
  font-size: 0.55rem;
  color: var(--slate-500);
}

.flow-arrow {
  font-size: 0.75rem;
  color: var(--primary-blue);
  font-weight: 800;
}

.side-badge-box {
  background-color: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-sm);
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.badge-title {
  font-size: 0.62rem;
  font-weight: 700;
  color: var(--primary-blue);
  letter-spacing: 0.04em;
}

.badge-sub {
  font-size: 0.55rem;
  color: var(--slate-500);
}

.badge-nodes {
  display: flex;
  gap: 6px;
}

.node-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--primary-blue);
}

.observability-panel {
  background-color: var(--slate-900);
  color: var(--white);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin-top: 10px;
}

.panel-header {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--accent-cyan);
  display: block;
  margin-bottom: 8px;
  letter-spacing: 0.05em;
}

.panel-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.6rem;
  color: var(--slate-300);
}

.list-bullet {
  display: inline-block;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: var(--accent-cyan);
  margin-right: 4px;
}

/* ==========================================================================
   SECTION COMMON STYLES
   ========================================================================== */

.systems-build-section,
.question-to-intelligence-section,
.stack-section,
.three-col-section {
  padding: 64px 0;
  border-bottom: 1px solid var(--slate-200);
}

.section-title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--slate-900);
  text-align: center;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.section-subtitle {
  font-size: 0.9rem;
  color: var(--slate-600);
  text-align: center;
  margin-bottom: 48px;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}

/* ==========================================================================
   SECTION: THE SYSTEMS I BUILD (3 PROJECTS PER ROW GRID LAYOUT)
   ========================================================================== */

.section-solutions .section-title {
  text-transform: none;
  font-size: clamp(1.6rem, 2.5vw, 2.1rem);
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.category-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--slate-200);
}

/* Solutions 2-Category Tab System */
.solutions-tabs-nav {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin: 0 auto 36px auto;
  max-width: 880px;
}

.solutions-tab-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 20px;
  background: var(--white);
  border: 1.5px solid var(--slate-200);
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--slate-700);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.solutions-tab-btn:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.solutions-tab-btn.active {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-hover) 100%);
  border-color: var(--primary-blue);
  color: var(--white);
  box-shadow: 0 8px 20px rgba(0, 82, 255, 0.25);
}

.solutions-tab-btn .tab-badge {
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  background: rgba(0, 82, 255, 0.1);
  color: var(--primary-blue);
  padding: 3px 8px;
  border-radius: 10px;
  transition: all var(--transition-fast);
}

.solutions-tab-btn.active .tab-badge {
  background: rgba(255, 255, 255, 0.22);
  color: var(--white);
}

.solutions-tab-btn .tab-count {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--slate-600);
  background: var(--slate-100);
  padding: 2px 8px;
  border-radius: 10px;
  transition: all var(--transition-fast);
}

.solutions-tab-btn.active .tab-count {
  background: rgba(255, 255, 255, 0.2);
  color: var(--white);
}

.solutions-tab-panel {
  display: none;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.solutions-tab-panel.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 680px) {
  .solutions-tabs-nav {
    flex-direction: column;
    gap: 10px;
  }
}

.mt-56 {
  margin-top: 56px;
}

.category-badge {
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  background-color: var(--primary-blue);
  color: var(--white);
  padding: 4px 10px;
  border-radius: 12px;
}

.category-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--slate-900);
}

/* 3, 2, and 1 Column Grid Layouts */
.portfolio-interfaces-grid.grid-3-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.portfolio-interfaces-grid.grid-2-cols {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.portfolio-interfaces-grid.grid-1-col {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

/* Full Row Card Layout (Image + Details Split) */
.section-solutions .research-interface-card {
  padding: 28px;
  gap: 20px;
  border-radius: var(--radius-xl);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.05);
  border: 1.5px solid var(--slate-200);
}

.section-solutions .card-row-layout {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 28px;
  align-items: center;
}

.section-solutions .project-image-frame {
  width: 100%;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1.5px solid var(--slate-200);
  box-shadow: 0 12px 36px rgba(15, 23, 42, 0.12);
  background-color: #0b0f19;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6px;
}

.section-solutions .project-img-16-9 {
  width: 100%;
  height: auto;
  max-height: 520px;
  object-fit: contain;
  display: block;
  border-radius: var(--radius-sm);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.section-solutions .project-image-frame:hover .project-img-16-9 {
  transform: scale(1.02);
}

.section-solutions .card-details-column {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
  height: 100%;
}

.section-solutions .proj-concept {
  font-size: 0.92rem;
  line-height: 1.55;
  min-height: auto;
  color: var(--slate-700);
}

.proj-features-list {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin: 4px 0;
}

.proj-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.81rem;
  color: var(--slate-600);
  line-height: 1.4;
}

.proj-feature-icon {
  color: var(--primary-blue);
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
  margin-top: 1px;
}

.proj-feature-item strong {
  color: var(--slate-900);
  font-weight: 600;
}

.proj-metrics-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.proj-metric-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.73rem;
  font-weight: 700;
  color: var(--slate-800);
  background-color: rgba(0, 82, 255, 0.06);
  border: 1px solid rgba(0, 82, 255, 0.15);
  padding: 4px 9px;
  border-radius: var(--radius-full);
}

.proj-metric-chip.green {
  color: #059669;
  background-color: rgba(16, 185, 129, 0.08);
  border-color: rgba(16, 185, 129, 0.2);
}

.proj-metric-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: currentColor;
}

@media (max-width: 900px) {
  .section-solutions .card-row-layout {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .section-solutions .project-image-frame {
    min-height: 240px;
  }
}

.research-interface-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
}

.research-interface-card:hover {
  border-color: var(--primary-blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.card-header-bar {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.proj-id {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--primary-blue);
  background-color: var(--primary-blue-light);
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

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

.proj-name {
  font-family: var(--font-heading);
  font-size: 0.98rem;
  font-weight: 800;
  color: var(--slate-900);
  line-height: 1.35;
}

.proj-badge {
  font-size: 0.62rem;
  font-weight: 700;
  color: var(--slate-500);
}

.proj-concept {
  font-size: 0.78rem;
  color: var(--slate-700);
  line-height: 1.45;
  min-height: 52px;
}

/* High Resolution 16:9 Image Frame */
.project-image-frame {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--slate-200);
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.05);
  background-color: var(--white);
}

.project-img-16-9 {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  transition: transform var(--transition-normal);
}

.project-image-frame:hover .project-img-16-9 {
  transform: scale(1.03);
}

/* Mini Live Output Sandbox */
.mini-live-output {
  background-color: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-sm);
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.output-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.out-label {
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--slate-500);
}

.out-status {
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--primary-blue);
  background-color: var(--primary-blue-light);
  padding: 2px 6px;
  border-radius: 4px;
}

.out-status.green {
  color: #047857;
  background-color: #ECFDF5;
}

.out-query {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--slate-800);
  font-style: italic;
  line-height: 1.3;
}

.out-metrics-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.m-pill {
  font-size: 0.58rem;
  font-weight: 700;
  color: var(--slate-700);
  background-color: var(--white);
  border: 1px solid var(--slate-300);
  padding: 2px 6px;
  border-radius: 4px;
}

.m-pill.highlight {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
}

/* Card Footer Bar */
.card-footer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 4px;
}

.tech-tags {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}

.tech-tags span {
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--slate-600);
  background-color: var(--slate-100);
  padding: 2px 6px;
  border-radius: 4px;
}

.explore-btn {
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--primary-blue);
  letter-spacing: 0.04em;
  transition: color var(--transition-fast);
}

.explore-btn:hover {
  color: var(--primary-blue-hover);
}

/* ==========================================================================
   SECTION: FROM QUESTION TO INTELLIGENCE
   ========================================================================== */

.pipeline-steps {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
  overflow-x: auto;
  padding-bottom: 12px;
}

.step-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  min-width: 120px;
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.step-item:hover {
  transform: translateY(-2px);
}

.step-icon-wrapper {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--slate-100);
  border: 1px solid var(--slate-300);
  color: var(--slate-600);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
  transition: all var(--transition-fast);
}

.step-item.active .step-icon-wrapper {
  background-color: var(--primary-blue);
  color: var(--white);
  border-color: var(--primary-blue);
  box-shadow: 0 4px 12px rgba(0, 82, 255, 0.25);
}

.step-title {
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--slate-900);
  letter-spacing: 0.03em;
}

.step-sub {
  font-size: 0.62rem;
  color: var(--slate-500);
  margin-top: 2px;
  max-width: 110px;
  line-height: 1.2;
}

.step-connector {
  color: var(--primary-blue);
  font-weight: 800;
  font-size: 1rem;
}

/* Intelligence Results Grid */
.intelligence-results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.intel-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.intel-card-title {
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--primary-blue);
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.intel-sub {
  font-size: 0.65rem;
  color: var(--slate-500);
  margin-bottom: 12px;
  display: block;
}

.doc-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 12px;
}

.doc-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.68rem;
  margin-bottom: 2px;
}

.doc-name { font-weight: 600; color: var(--slate-800); }
.doc-pct { font-weight: 700; color: var(--primary-blue); }

.doc-progress-bar {
  height: 5px;
  background-color: var(--slate-100);
  border-radius: 3px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background-color: var(--primary-blue);
  border-radius: 3px;
}

.card-footer-link {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--primary-blue);
  margin-top: 8px;
}

.intel-text-body {
  font-size: 0.78rem;
  color: var(--slate-700);
  line-height: 1.5;
  margin-bottom: 12px;
}

.confidence-badge {
  font-size: 0.7rem;
  color: var(--slate-600);
}

.chart-legend {
  display: flex;
  gap: 12px;
  font-size: 0.6rem;
  margin-bottom: 8px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

.color-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}
.color-dot.base { background-color: #2563EB; }
.color-dot.best { background-color: #10B981; }
.color-dot.worst { background-color: #EF4444; }

.simulation-chart {
  height: 70px;
  margin-bottom: 8px;
}

.sim-svg {
  width: 100%;
  height: 100%;
}

.score-rows {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
}

.score-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  border-bottom: 1px dashed var(--slate-200);
  padding-bottom: 4px;
}

.score-name { color: var(--slate-600); }
.score-value { font-weight: 700; color: var(--slate-900); }

.checklist {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.72rem;
  margin-bottom: 12px;
}

.check-icon {
  color: #10B981;
  font-weight: 800;
  margin-right: 6px;
}

.status-triggered {
  font-size: 0.65rem;
  font-weight: 700;
  color: #10B981;
  background-color: #ECFDF5;
  padding: 4px 8px;
  border-radius: 4px;
  display: inline-block;
}

/* ==========================================================================
   SECTION: MY AI STACK
   ========================================================================== */

.stack-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.stack-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: all var(--transition-fast);
}

.stack-card:hover {
  border-color: var(--primary-blue);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.stack-icon {
  color: var(--primary-blue);
  margin-bottom: 8px;
}

.stack-name {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 4px;
}

.stack-details {
  font-size: 0.68rem;
  color: var(--slate-500);
}

/* ==========================================================================
   SECTION: THREE COLUMN (THINK | BOOKS | AI LAB)
   ========================================================================== */

.three-col-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.col-block {
  display: flex;
  flex-direction: column;
}

.col-header {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--slate-200);
  letter-spacing: 0.02em;
}

/* Think Column */
.article-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 24px;
}

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

.article-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--slate-400);
  font-size: 0.62rem;
  font-weight: 700;
}

.article-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--slate-800);
  line-height: 1.4;
  transition: color var(--transition-fast);
}

.article-title:hover {
  color: var(--primary-blue);
  cursor: pointer;
}

/* Books Column */
.books-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.book-card {
  aspect-ratio: 2/3;
}

.book-card.real-book-card {
  aspect-ratio: auto;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
  transition: transform var(--transition-fast);
  background-color: var(--navy-dark);
}

.book-card.real-book-card:hover {
  transform: translateY(-3px) scale(1.02);
}

.real-book-cover {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.book-img-real {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  border-radius: var(--radius-sm);
}

.book-cover-placeholder {
  width: 100%;
  height: 100%;
  border-radius: 4px;
  padding: 10px;
  position: relative;
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-fast);
}

.book-card:hover .book-cover-placeholder {
  transform: translateY(-3px) scale(1.02);
}

.book-spine {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 5px;
  background: rgba(0,0,0,0.2);
  border-radius: 4px 0 0 4px;
}

.gold-theme {
  background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
  border: 1px solid #D97706;
}

.blue-theme {
  background: linear-gradient(135deg, #1E3A8A 0%, #0F172A 100%);
  border: 1px solid #3B82F6;
}

.teal-theme {
  background: linear-gradient(135deg, #115E59 0%, #0F172A 100%);
  border: 1px solid #14B8A6;
}

.cyan-theme {
  background: linear-gradient(135deg, #164E63 0%, #0F172A 100%);
  border: 1px solid #06B6D4;
}

.book-cover-content {
  display: flex;
  flex-direction: column;
  height: 100%;
  justify-content: space-between;
  color: var(--white);
}

.book-title-text {
  font-family: var(--font-heading);
  font-size: 0.65rem;
  font-weight: 800;
  line-height: 1.2;
}

.book-subtitle-text {
  font-size: 0.5rem;
  color: var(--slate-300);
  line-height: 1.2;
  margin-top: 4px;
}

.book-icon-graphic {
  font-size: 1.2rem;
  text-align: center;
  margin: 6px 0;
}

.book-author-text {
  font-size: 0.48rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--slate-300);
  text-transform: uppercase;
}

/* Lab Column */
.lab-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 24px;
}

.lab-item {
  background-color: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-sm);
  padding: 12px;
}

.status-tag {
  font-size: 0.55rem;
  font-weight: 800;
  color: var(--primary-blue);
  background-color: var(--primary-blue-light);
  padding: 2px 6px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 6px;
}

.lab-item-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 4px;
}

.lab-item-desc {
  font-size: 0.72rem;
  color: var(--slate-600);
  line-height: 1.3;
}

.col-link {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--primary-blue);
  letter-spacing: 0.04em;
}

/* ==========================================================================
   SECTION: CALL TO ACTION BANNER
   ========================================================================== */

.cta-banner-section {
  padding: 80px 0;
  background: linear-gradient(135deg, #0B132B 0%, #0F172A 100%);
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.banner-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 24px;
  text-align: center;
  position: relative;
  z-index: 2;
}

.banner-headline {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  margin-bottom: 36px;
  color: var(--white);
}

.banner-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
}

.banner-buttons .secondary-btn {
  border-color: var(--white);
  color: var(--white);
}

.banner-buttons .secondary-btn:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

.site-footer {
  background-color: var(--white);
  padding: 60px 0 30px 0;
  border-top: 1px solid var(--slate-200);
}

.footer-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

.footer-main-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.sm-hex {
  width: 30px;
  height: 30px;
}

.footer-brand-name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1rem;
  display: block;
}

.footer-brand-sub {
  font-size: 0.62rem;
  color: var(--slate-500);
  line-height: 1.2;
}

.footer-tagline {
  font-size: 0.78rem;
  color: var(--slate-600);
}

.footer-col-title {
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--slate-900);
  margin-bottom: 16px;
}

.footer-links, .footer-contact-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.78rem;
  color: var(--slate-600);
}

.footer-links a:hover, .footer-contact-list a:hover {
  color: var(--primary-blue);
}

.footer-contact-list li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.subscribe-text {
  font-size: 0.78rem;
  color: var(--slate-600);
  margin-bottom: 12px;
}

.subscribe-form {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.subscribe-input {
  padding: 10px 14px;
  border: 1px solid var(--slate-300);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.subscribe-input:focus {
  border-color: var(--primary-blue);
}

.footer-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--slate-200);
  font-size: 0.7rem;
  color: var(--slate-500);
}

.legal-links {
  display: flex;
  gap: 20px;
}

/* ==========================================================================
   MODAL STYLES
   ========================================================================== */

.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(4px);
  z-index: 999;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.modal-overlay.active {
  display: flex;
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background-color: var(--white);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 540px;
  padding: 32px;
  position: relative;
  box-shadow: var(--shadow-lg);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 1.5rem;
  color: var(--slate-400);
}

.modal-header {
  margin-bottom: 24px;
}

.modal-header h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 4px;
}

.modal-header p {
  font-size: 0.78rem;
  color: var(--slate-500);
}

.diag-question {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.diag-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--slate-800);
}

.diag-select {
  padding: 10px;
  border: 1px solid var(--slate-300);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-family: inherit;
  outline: none;
}

.full-width {
  width: 100%;
  margin-top: 12px;
}

.diag-result-card {
  margin-top: 20px;
  padding: 20px;
  background-color: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  text-align: center;
}

.diag-result-card.hidden {
  display: none;
}

.score-circle {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background-color: var(--primary-blue);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px auto;
}

.score-num {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 800;
}

/* Responsive Adjustments */
@media (max-width: 1100px) {
  .portfolio-interfaces-grid.grid-3-cols {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

  .three-col-grid {
    grid-template-columns: 1fr 1fr;
  }

  .stack-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

@media (max-width: 680px) {
  .portfolio-interfaces-grid.grid-3-cols {
    grid-template-columns: 1fr;
  }

  .main-nav {
    display: none;
  }

  .three-col-grid, .stack-grid {
    grid-template-columns: 1fr;
  }

  .hero-headline {
    font-size: 1.25rem;
  }

  .banner-headline {
    font-size: 1.4rem;
  }

  .banner-buttons {
    flex-direction: column;
  }

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

/* ==========================================================================
   SECTION: IDEAS TURNED INTO BOOKS & BOOKS PAGE
   ========================================================================== */

.ideas-to-books-section {
  padding: 72px 0;
  background: linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
  border-bottom: 1px solid var(--slate-200);
}

.section-badge {
  display: inline-block;
  margin-bottom: 12px;
}

.two-col-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

/* Home Books Showcase Grid (5 cards) */
.books-home-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

@media (max-width: 1200px) {
  .books-home-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .books-home-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .home-book-card {
    padding: 10px;
  }

  .home-book-cover-frame {
    max-height: 200px;
  }

  .home-book-title {
    font-size: 0.82rem;
  }

  .home-book-sub {
    font-size: 0.66rem;
  }

  .home-book-meta {
    font-size: 0.58rem;
  }
}

@media (max-width: 480px) {
  .books-home-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .home-book-card {
    padding: 8px;
  }

  .home-book-cover-frame {
    max-height: 170px;
    margin-bottom: 8px;
  }

  .home-book-title {
    font-size: 0.76rem;
    line-height: 1.2;
  }

  .home-book-sub {
    font-size: 0.62rem;
    line-height: 1.25;
  }

  .home-book-meta {
    font-size: 0.55rem;
    padding-top: 4px;
  }

  .book-store-btn {
    margin-top: 6px;
    font-size: 0.62rem;
  }
}

.home-book-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 14px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.home-book-card:hover {
  border-color: var(--primary-blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.home-book-cover-frame {
  width: 100%;
  aspect-ratio: 2/3;
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 12px;
  background-color: var(--navy-dark);
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

.home-book-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-fast);
}

.home-book-card:hover .home-book-img {
  transform: scale(1.04);
}

.home-book-details {
  display: flex;
  flex-direction: column;
  gap: 6px;
  flex-grow: 1;
}

.idea-tag {
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--primary-blue);
  background-color: var(--primary-blue-light);
  padding: 2px 6px;
  border-radius: 4px;
  align-self: flex-start;
}

.home-book-title {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--slate-900);
  line-height: 1.25;
}

.home-book-sub {
  font-size: 0.7rem;
  color: var(--slate-600);
  line-height: 1.35;
}

.home-book-meta {
  font-size: 0.62rem;
  font-weight: 600;
  color: var(--slate-500);
  margin-top: auto;
  padding-top: 6px;
}

.book-store-btn {
  display: inline-block;
  margin-top: 10px;
  font-size: 0.68rem;
  font-weight: 800;
  color: var(--primary-blue);
  letter-spacing: 0.04em;
}

.book-store-btn:hover {
  text-decoration: underline;
}

.books-view-all-box {
  text-align: center;
}

/* Standalone Books Page Styles */
.books-page-hero {
  padding: 56px 0 36px 0;
  background: linear-gradient(180deg, #0F172A 0%, #1E293B 100%);
  color: var(--white);
  border-bottom: 1px solid var(--slate-700);
}

.hero-badge {
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--accent-cyan);
  background: rgba(14, 165, 233, 0.15);
  padding: 4px 12px;
  border-radius: 20px;
  display: inline-block;
  margin-bottom: 12px;
}

.books-page-title {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--slate-900);
  margin-top: 12px;
  margin-bottom: 12px;
}

.books-page-subtitle {
  font-size: 0.95rem;
  color: var(--slate-600);
  max-width: 780px;
  line-height: 1.6;
  margin-bottom: 24px;
}

.idea-filter-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-tab {
  background-color: var(--white);
  border: 1px solid var(--slate-300);
  color: var(--slate-700);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.filter-tab:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
  background-color: var(--primary-blue-light);
}

.filter-tab.active {
  background-color: var(--primary-blue);
  border-color: var(--primary-blue);
  color: var(--white);
}

.active-nav-item {
  color: var(--primary-blue) !important;
  font-weight: 800 !important;
}

/* Books Detail Stack (books.html) */
.books-catalog-section {
  padding: 64px 0;
  background-color: var(--slate-50);
}

.books-detail-stack {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.book-detail-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 36px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.book-detail-card:hover {
  border-color: var(--primary-blue);
  box-shadow: var(--shadow-md);
}

@media (max-width: 860px) {
  .book-detail-card {
    grid-template-columns: 1fr;
  }
}

.book-media-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.book-cover-link {
  width: 100%;
  max-width: 220px;
  aspect-ratio: 2/3;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: 0 6px 16px rgba(0,0,0,0.2);
  display: block;
}

.book-detail-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-fast);
}

.book-cover-link:hover .book-detail-img {
  transform: scale(1.03);
}

.publisher-badge {
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-align: center;
  padding: 6px 10px;
  border-radius: 4px;
  width: 100%;
}

.publisher-badge.springer {
  background-color: #E0F2FE;
  color: #0369A1;
  border: 1px solid #BAE6FD;
}

.publisher-badge.amazon {
  background-color: #FEF3C7;
  color: #B45309;
  border: 1px solid #FDE68A;
}

.book-text-col {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.idea-header-pill {
  display: flex;
  align-items: center;
  gap: 10px;
}

.idea-num {
  font-size: 0.65rem;
  font-weight: 800;
  background-color: var(--primary-blue);
  color: var(--white);
  padding: 3px 8px;
  border-radius: 4px;
}

.idea-name {
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--slate-600);
}

.book-detail-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--slate-900);
  line-height: 1.2;
}

.book-detail-sub {
  font-size: 0.92rem;
  color: var(--slate-600);
  line-height: 1.4;
}

.book-authors-row {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary-blue);
}

.idea-transformation-box {
  background-color: var(--slate-50);
  border-left: 3px solid var(--primary-blue);
  padding: 12px 16px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 4px 0;
}

.box-label {
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--slate-500);
  display: block;
  margin-bottom: 4px;
}

.idea-transformation-box p {
  font-size: 0.82rem;
  color: var(--slate-800);
  line-height: 1.5;
}

.book-pillars {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.pillar-tag {
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--slate-700);
  background-color: var(--slate-100);
  border: 1px solid var(--slate-200);
  padding: 4px 10px;
  border-radius: 12px;
}

.book-actions {
  margin-top: 8px;
}

/* ==========================================================================
   PROBLEMS → THINKING → SOLUTIONS → EVIDENCE → IMPACT → IDEAS CONTINUUM
   ========================================================================== */

.hero-pill-tag {
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--primary-blue);
  background-color: var(--primary-blue-light);
  padding: 4px 12px;
  border-radius: 20px;
  display: inline-block;
  margin-bottom: 16px;
}

.stage-badge {
  background-color: var(--navy-dark);
  color: var(--accent-cyan);
  border: 1px solid var(--slate-700);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  padding: 4px 12px;
  border-radius: 12px;
  display: inline-block;
  margin-bottom: 12px;
}

.continuum-section {
  padding: 72px 0;
  border-bottom: 1px solid var(--slate-200);
}

/* Stage 01: Problems */
.section-problems {
  background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
}

.problems-grid, .grid-2x2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 36px;
}

@media (max-width: 900px) {
  .problems-grid, .grid-2x2 {
    grid-template-columns: 1fr;
  }
}

.approach-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.approach-card:hover {
  border-color: var(--primary-blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.problem-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.layman-box {
  background-color: #FFF7ED;
  border-left: 4px solid #F97316;
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.box-tag {
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.05em;
}

.box-tag.layman {
  color: #C2410C;
}

.layman-text {
  font-size: 0.85rem;
  color: #9A3412;
  line-height: 1.5;
  margin: 0;
}

.approach-box {
  background-color: #F0F9FF;
  border-left: 4px solid var(--primary-blue);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.box-tag.approach {
  color: var(--primary-blue-dark);
}

.approach-text {
  font-size: 0.85rem;
  color: var(--slate-800);
  line-height: 1.5;
  margin: 0;
}

.problem-outcome-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: #ECFDF5;
  border: 1px solid #A7F3D0;
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-top: 4px;
}

.outcome-label {
  font-size: 0.62rem;
  font-weight: 800;
  color: #065F46;
}

.outcome-val {
  font-size: 0.76rem;
  font-weight: 800;
  color: #047857;
}

/* Dark Mode Thinking Cards for Section 02 */
.approach-card-dark {
  background-color: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  backdrop-filter: blur(8px);
  transition: all var(--transition-normal);
}

.approach-card-dark:hover {
  border-color: var(--accent-cyan);
  box-shadow: 0 10px 30px rgba(14, 165, 233, 0.15);
  transform: translateY(-2px);
}

.layman-box-dark {
  background: rgba(249, 115, 22, 0.12);
  border-left: 4px solid #F97316;
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.box-tag.layman-dark {
  color: #FB923C;
}

.layman-text-dark {
  font-size: 0.85rem;
  color: #FFEDD5;
  line-height: 1.5;
  margin: 0;
}

.approach-box-dark {
  background: rgba(14, 165, 233, 0.12);
  border-left: 4px solid #0EA5E9;
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.box-tag.approach-dark {
  color: #38BDF8;
}

.approach-text-dark {
  font-size: 0.85rem;
  color: #E0F2FE;
  line-height: 1.5;
  margin: 0;
}

.problem-outcome-bar-dark {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-top: 4px;
}

.outcome-label-dark {
  font-size: 0.62rem;
  font-weight: 800;
  color: #34D399;
}

.outcome-val-dark {
  font-size: 0.76rem;
  font-weight: 800;
  color: #6EE7B7;
}

.film-scene-badge {
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: #F59E0B;
  background: rgba(245, 158, 11, 0.15);
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 4px 10px;
  border-radius: 12px;
}

.problem-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.problem-card:hover {
  border-color: #EF4444;
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.problem-num {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: #EF4444;
  background-color: #FEF2F2;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.problem-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--slate-900);
  line-height: 1.3;
}

.problem-desc {
  font-size: 0.78rem;
  color: var(--slate-600);
  line-height: 1.5;
}

.problem-tag {
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: #991B1B;
  background-color: #FEE2E2;
  padding: 3px 8px;
  border-radius: 4px;
  align-self: flex-start;
}

/* Stage 02: Thinking */
.section-thinking {
  background: linear-gradient(180deg, #0F172A 0%, #1E293B 100%);
  color: var(--white);
}

.section-thinking .section-title {
  color: var(--white);
}

.section-thinking .section-subtitle {
  color: var(--slate-300);
}

.thinking-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 36px;
}

@media (max-width: 900px) {
  .thinking-grid {
    grid-template-columns: 1fr;
  }
}

.thinking-card {
  background-color: rgba(255,255,255,0.04);
  border: 1px solid var(--slate-700);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: all var(--transition-normal);
}

.thinking-card:hover {
  border-color: var(--accent-cyan);
  background-color: rgba(255,255,255,0.07);
  transform: translateY(-3px);
}

.thinking-icon {
  color: var(--accent-cyan);
  background: rgba(14, 165, 233, 0.15);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.thinking-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--white);
}

.thinking-desc {
  font-size: 0.82rem;
  color: var(--slate-300);
  line-height: 1.55;
}

.thinking-pill {
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--accent-cyan);
  border: 1px solid rgba(14, 165, 233, 0.3);
  padding: 3px 8px;
  border-radius: 4px;
  align-self: flex-start;
}

/* Stage 05: Impact */
.section-impact {
  background-color: var(--white);
}

.impact-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 36px;
}

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

@media (max-width: 600px) {
  .impact-grid {
    grid-template-columns: 1fr;
  }
}

.impact-card {
  background-color: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.impact-card:hover {
  border-color: var(--accent-green);
  transform: translateY(-3px);
}

.impact-stat {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent-green);
  line-height: 1;
}

.impact-title {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--slate-900);
}

.impact-desc {
  font-size: 0.76rem;
  color: var(--slate-600);
  line-height: 1.45;
}

.nav-book-link {
  color: var(--primary-blue) !important;
  background-color: var(--primary-blue-light);
  padding: 6px 14px;
  border-radius: 16px;
  font-weight: 800 !important;
  border: 1px solid rgba(0, 82, 255, 0.2);
  transition: all var(--transition-fast) !important;
}

.nav-book-link:hover {
  background-color: var(--primary-blue);
  color: var(--white) !important;
  transform: translateY(-1px);
}

.nav-highlight-link {
  color: var(--primary-blue) !important;
  background-color: var(--primary-blue-light);
  padding: 6px 14px;
  border-radius: 16px;
  font-weight: 800 !important;
  border: 1px solid rgba(0, 82, 255, 0.25);
  transition: all var(--transition-fast) !important;
}

.nav-highlight-link:hover {
  background-color: var(--primary-blue);
  color: var(--white) !important;
  border-color: var(--primary-blue);
  transform: translateY(-1px);
}

/* Multi-category hero metrics bar */
.hero-category-metrics {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--slate-200);
}

.hero-category-metrics .metric-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.hero-category-metrics .metric-number {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary-blue);
  line-height: 1;
}

.hero-category-metrics .metric-label {
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--slate-600);
  line-height: 1.2;
}

.highlight-metric .metric-number {
  color: var(--accent-cyan);
}

/* Impact Summary Bar */
.impact-summary-bar {
  margin-top: 32px;
  background-color: var(--navy-dark);
  color: var(--white);
  border-radius: var(--radius-lg);
  padding: 20px 28px;
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 20px;
  flex-wrap: wrap;
  border: 1px solid var(--slate-700);
}

.summary-metric-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.summary-metric-item .num {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--accent-cyan);
}

.summary-metric-item .lbl {
  font-size: 0.62rem;
  font-weight: 700;
  color: var(--slate-300);
  letter-spacing: 0.04em;
}

/* ==========================================================================
   NEW PAGES: PRODUCTS, LABS, BLOG STYLES
   ========================================================================== */

/* Products, Labs, Blog, Thinking, Books Page Heroes */
.products-page-hero, .labs-page-hero, .blog-page-hero, .thinking-page-hero, .books-page-hero {
  padding: 60px 0 36px;
  background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
  border-bottom: 1px solid var(--slate-200);
}

.products-page-title, .labs-page-title, .blog-page-title {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--slate-900);
  margin-top: 12px;
  margin-bottom: 12px;
}

.products-page-subtitle, .labs-page-subtitle, .blog-page-subtitle {
  font-size: 0.95rem;
  color: var(--slate-600);
  max-width: 720px;
  line-height: 1.6;
}

.continuum-flow-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 24px;
  flex-wrap: wrap;
  background-color: var(--slate-100);
  padding: 10px 18px;
  border-radius: 30px;
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--slate-600);
  width: fit-content;
}

.continuum-flow-bar .highlight {
  color: var(--primary-blue);
}

.dark-flow {
  background-color: var(--navy-dark);
  color: var(--slate-400);
}

.dark-flow .highlight-cyan {
  color: var(--accent-cyan);
}

.products-catalog-section, .labs-content-section, .blog-content-section {
  padding: 60px 0;
}

.products-stack {
  display: flex;
  flex-direction: column;
  gap: 32px;
  margin-top: 24px;
}

.product-detail-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.product-detail-card:hover {
  border-color: var(--primary-blue);
  box-shadow: var(--shadow-md);
}

.product-header-bar {
  background-color: var(--slate-900);
  color: var(--white);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 16px;
}

.prod-id {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--accent-cyan);
  background: rgba(14, 165, 233, 0.15);
  padding: 4px 10px;
  border-radius: 4px;
}

.prod-name {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--white);
}

.prod-tag {
  font-size: 0.65rem;
  color: var(--slate-400);
  font-weight: 600;
}

.product-grid-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 24px;
  padding: 24px;
}

@media (max-width: 900px) {
  .product-grid-layout {
    grid-template-columns: 1fr;
  }
}

.prod-img {
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--slate-200);
  object-fit: cover;
}

.prod-info-box {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.continuum-mini-block {
  border-left: 3px solid var(--primary-blue);
  padding-left: 12px;
}

.block-label {
  font-size: 0.62rem;
  font-weight: 800;
  color: var(--slate-900);
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 2px;
}

.continuum-mini-block p {
  font-size: 0.78rem;
  color: var(--slate-600);
  line-height: 1.45;
  margin: 0;
}

.prod-tech-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.prod-tech-bar span {
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--slate-700);
  background-color: var(--slate-100);
  padding: 3px 8px;
  border-radius: 4px;
}

/* Labs Page */
.lab-badge {
  background-color: #0F172A;
  color: var(--accent-cyan);
}

.labs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

@media (max-width: 900px) {
  .labs-grid {
    grid-template-columns: 1fr;
  }
}

.lab-card-detailed {
  background-color: var(--navy-dark);
  color: var(--white);
  border: 1px solid var(--slate-700);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.lab-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.lab-status-badge {
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--accent-cyan);
  background: rgba(14, 165, 233, 0.15);
  padding: 4px 10px;
  border-radius: 12px;
}

.lab-id {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  color: var(--slate-400);
}

.lab-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--white);
}

.lab-sub {
  font-size: 0.8rem;
  color: var(--slate-300);
}

.lab-continuum-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 8px;
}

.lab-step-box {
  background: rgba(255,255,255,0.03);
  border-left: 2px solid var(--accent-cyan);
  padding: 8px 12px;
  border-radius: 0 4px 4px 0;
}

.step-label {
  font-size: 0.58rem;
  font-weight: 800;
  color: var(--accent-cyan);
  display: block;
}

.lab-step-box p {
  font-size: 0.76rem;
  color: var(--slate-300);
  margin: 2px 0 0;
  line-height: 1.4;
}

.lab-tags-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.lab-tags-row span {
  font-size: 0.6rem;
  font-weight: 700;
  color: var(--accent-cyan);
  border: 1px solid rgba(14, 165, 233, 0.3);
  padding: 2px 8px;
  border-radius: 4px;
}

/* Blog Page */
.blog-badge {
  background-color: var(--primary-blue-light);
  color: var(--primary-blue);
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

@media (max-width: 900px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }
}

.blog-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.blog-card:hover {
  border-color: var(--primary-blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.blog-meta-row {
  display: flex;
  gap: 12px;
  font-size: 0.62rem;
  font-weight: 800;
  color: var(--slate-600);
}

.blog-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--slate-900);
  line-height: 1.35;
}

.blog-excerpt {
  font-size: 0.8rem;
  color: var(--slate-600);
  line-height: 1.55;
}

.blog-continuum-breakdown .mini-tag-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.c-tag {
  font-size: 0.58rem;
  font-weight: 700;
  color: var(--primary-blue);
  background-color: var(--primary-blue-light);
  padding: 3px 8px;
  border-radius: 4px;
}

.blog-read-btn {
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--primary-blue);
  margin-top: 6px;
}

/* ==========================================================================
   THINKING PAGE DEDICATED STYLES
   ========================================================================== */
.thinking-badge {
  background-color: var(--navy-dark);
  color: var(--accent-cyan);
}

.thinking-article-section {
  padding: 56px 0;
  background-color: var(--white);
}

.thinking-deepdive-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 48px;
}

@media (max-width: 768px) {
  .thinking-deepdive-card {
    padding: 24px;
  }
}

.article-block {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.story-hook-block {
  background-color: var(--slate-50);
  padding: 32px;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--primary-blue);
}

.section-num-tag {
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--primary-blue);
  background-color: var(--primary-blue-light);
  padding: 3px 10px;
  border-radius: 12px;
  width: fit-content;
}

.article-heading {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--slate-900);
  line-height: 1.3;
}

.story-paragraph, .article-p {
  font-size: 0.95rem;
  color: var(--slate-700);
  line-height: 1.7;
}

.quote-callout-box {
  background-color: var(--navy-dark);
  color: var(--white);
  padding: 24px 32px;
  border-radius: var(--radius-md);
  margin: 16px 0;
  position: relative;
}

.quote-icon {
  font-family: var(--font-heading);
  font-size: 3rem;
  color: var(--accent-cyan);
  line-height: 1;
  margin-bottom: -10px;
}

.quote-text {
  font-size: 1.05rem;
  font-weight: 600;
  font-style: italic;
  color: var(--slate-100);
  line-height: 1.5;
  margin: 0;
}

/* Comparison Table */
.table-container {
  margin-top: 16px;
  overflow-x: auto;
}

.table-title {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--slate-900);
  margin-bottom: 12px;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.comparison-table th, .comparison-table td {
  padding: 12px 16px;
  border: 1px solid var(--slate-200);
  text-align: left;
}

.comparison-table th {
  background-color: var(--slate-900);
  color: var(--white);
  font-weight: 800;
}

.comparison-table tr:nth-child(even) {
  background-color: var(--slate-50);
}

/* Three Pillars Grid */
.three-pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 16px 0;
}

@media (max-width: 900px) {
  .three-pillars-grid {
    grid-template-columns: 1fr;
  }
}

.pillar-card {
  background-color: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.pillar-num {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--primary-blue);
}

.pillar-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 800;
  color: var(--slate-900);
}

.pillar-desc {
  font-size: 0.78rem;
  color: var(--slate-600);
  line-height: 1.5;
}

/* Vertical Continuum Steps */
.continuum-steps-vertical {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 16px;
}

.c-step-item {
  border-left: 3px solid var(--slate-300);
  padding-left: 18px;
}

.c-step-badge {
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  padding: 2px 8px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 4px;
}

.c-step-badge.red { background: #FEF2F2; color: #EF4444; }
.c-step-badge.blue { background: var(--primary-blue-light); color: var(--primary-blue); }
.c-step-badge.green { background: #ECFDF5; color: #10B981; }
.c-step-badge.yellow { background: #FEF3C7; color: #D97706; }
.c-step-badge.purple { background: #F3E8FF; color: #9333EA; }
.c-step-badge.dark { background: #F1F5F9; color: #0F172A; }

.c-step-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--slate-900);
}

.c-step-desc {
  font-size: 0.82rem;
  color: var(--slate-600);
  line-height: 1.5;
}

/* Mental Models Stack */
.mental-models-stack {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 16px;
}

.model-box {
  background-color: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 24px;
}

.model-heading {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 8px;
}

.model-text {
  font-size: 0.85rem;
  color: var(--slate-700);
  line-height: 1.6;
}

.takeaway-pill {
  margin-top: 12px;
  background-color: var(--primary-blue-light);
  color: var(--slate-900);
  padding: 10px 14px;
  border-radius: 6px;
  font-size: 0.78rem;
  border-left: 3px solid var(--primary-blue);
}

/* Playbook Checklist */
.playbook-checklist {
  list-style: none;
  padding: 0;
  margin: 16px 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.playbook-checklist li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 0.88rem;
  color: var(--slate-800);
  line-height: 1.5;
}

.chk-num {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--white);
  background-color: var(--primary-blue);
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.conclusion-block {
  background-color: var(--slate-900);
  color: var(--white);
  padding: 36px;
  border-radius: var(--radius-lg);
}

.conclusion-block .article-heading {
  color: var(--white);
}

.conclusion-block .article-p {
  color: var(--slate-300);
}

.thinking-cta-buttons {
  display: flex;
  gap: 16px;
  margin-top: 20px;
  flex-wrap: wrap;
}

/* Real-world case studies grid */
.case-studies-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 20px;
}

@media (max-width: 992px) {
  .case-studies-grid {
    grid-template-columns: 1fr;
  }
}

.case-study-card {
  background-color: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.case-study-card:hover {
  border-color: var(--primary-blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.case-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.case-num {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--primary-blue);
  background-color: var(--primary-blue-light);
  padding: 3px 8px;
  border-radius: 4px;
}

.case-industry {
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--slate-600);
}

.case-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--slate-900);
  line-height: 1.3;
}

.case-detail-block {
  border-left: 3px solid var(--slate-300);
  padding-left: 10px;
}

.case-lbl {
  font-size: 0.58rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  display: block;
  margin-bottom: 2px;
}

.red-lbl { color: #EF4444; }
.blue-lbl { color: var(--primary-blue); }

.case-detail-block p {
  font-size: 0.78rem;
  color: var(--slate-600);
  line-height: 1.45;
  margin: 0;
}

.case-impact-tag {
  font-size: 0.62rem;
  font-weight: 800;
  color: var(--accent-green);
  background-color: #ECFDF5;
  padding: 6px 10px;
  border-radius: 6px;
  border-left: 3px solid var(--accent-green);
  margin-top: 4px;
}

/* ==========================================================================
   FULL-WIDTH PROBLEM ROWS FOR THINKING PAGE
   ========================================================================== */

.thinking-deepdive-stack {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.thinking-row-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.thinking-row-card:hover {
  border-color: var(--primary-blue);
  box-shadow: var(--shadow-md);
}

.row-header-bar {
  background-color: var(--slate-900);
  color: var(--white);
  padding: 18px 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.row-num {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--accent-cyan);
  background: rgba(14, 165, 233, 0.15);
  padding: 4px 12px;
  border-radius: 12px;
}

.row-category {
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--slate-300);
}

.row-content-body {
  padding: 36px 36px 40px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

@media (max-width: 768px) {
  .row-content-body {
    padding: 24px;
  }
}

.row-title {
  font-family: var(--font-heading);
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--slate-900);
  line-height: 1.3;
}

.row-section-block {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.block-sub-heading {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 4px;
}

.thinking-bullet-list {
  margin: 8px 0;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.thinking-bullet-list li {
  font-size: 0.92rem;
  color: var(--slate-700);
  line-height: 1.6;
}

/* Epistemic 3-Grid */
.epistemic-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 12px;
}

@media (max-width: 900px) {
  .epistemic-grid-3 {
    grid-template-columns: 1fr;
  }
}

.e-card {
  background-color: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.e-num {
  font-size: 0.6rem;
  font-weight: 800;
  color: var(--primary-blue);
  letter-spacing: 0.05em;
}

.e-title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--slate-900);
}

.e-desc {
  font-size: 0.76rem;
  color: var(--slate-600);
  line-height: 1.45;
  margin: 0;
}

/* Orchestra Flow Grid */
.orchestra-flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: 12px;
}

@media (max-width: 900px) {
  .orchestra-flow-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .orchestra-flow-grid {
    grid-template-columns: 1fr;
  }
}

.o-step {
  background-color: var(--navy-dark);
  color: var(--white);
  padding: 16px;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.o-role {
  font-family: var(--font-heading);
  font-size: 0.65rem;
  font-weight: 800;
  color: var(--accent-cyan);
  letter-spacing: 0.05em;
}

.o-step p {
  font-size: 0.74rem;
  color: var(--slate-300);
  line-height: 1.4;
  margin: 0;
}

/* Scenario Score Box */
.scenario-score-box {
  display: flex;
  align-items: center;
  justify-content: space-around;
  background-color: var(--navy-dark);
  border-radius: var(--radius-md);
  padding: 18px 24px;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.s-metric {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.s-metric .val {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--accent-cyan);
}

.s-metric .lbl {
  font-size: 0.62rem;
  color: var(--slate-300);
  font-weight: 700;
}

/* Denoising Steps Row */
.denoising-steps-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 12px;
}

@media (max-width: 900px) {
  .denoising-steps-row {
    grid-template-columns: 1fr;
  }
}

.d-step {
  background-color: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.d-step .num {
  font-size: 0.6rem;
  font-weight: 800;
  color: var(--primary-blue);
}

.d-step strong {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  color: var(--slate-900);
}

.d-step p {
  font-size: 0.76rem;
  color: var(--slate-600);
  line-height: 1.45;
  margin: 0;
}

.section-divider-header {
  border-bottom: 2px solid var(--slate-900);
  padding-bottom: 12px;
  margin-bottom: 24px;
}

.divider-badge {
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--white);
  background-color: var(--slate-900);
  padding: 4px 12px;
  border-radius: 12px;
  display: inline-block;
  margin-bottom: 8px;
}

.divider-title {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--slate-900);
}

.mt-40 {
  margin-top: 40px;
}

/* ==========================================================================
   NEW FEATURES — MOBILE NAVIGATION
   ========================================================================== */

/* Hamburger Toggle Button */
.mobile-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 8px;
  border: 1.5px solid var(--slate-300);
  border-radius: var(--radius-sm);
  background: transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  z-index: 1001;
}

.hamburger-line {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--slate-700);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.mobile-nav-toggle.active .hamburger-line:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-nav-toggle.active .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-nav-toggle.active .hamburger-line:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Nav Drawer */
.mobile-nav-drawer {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 999;
  pointer-events: none;
}

.mobile-nav-drawer.active {
  pointer-events: all;
}

.mobile-nav-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(11, 19, 43, 0.6);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.mobile-nav-drawer.active .mobile-nav-overlay {
  opacity: 1;
}

.mobile-nav-menu {
  position: absolute;
  top: 0;
  right: 0;
  width: min(320px, 85vw);
  height: 100%;
  background: var(--white);
  padding: 80px 32px 40px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: -10px 0 40px rgba(0,0,0,0.15);
  overflow-y: auto;
}

.mobile-nav-drawer.active .mobile-nav-menu {
  transform: translateX(0);
}

.mobile-nav-menu a {
  display: block;
  padding: 14px 16px;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--slate-800);
  border-radius: var(--radius-sm);
  transition: all var(--transition-normal);
}

.mobile-nav-menu a:hover,
.mobile-nav-menu a.active-nav {
  background: var(--primary-blue-light);
  color: var(--primary-blue);
}

.mobile-nav-menu .nav-book-link {
  margin-top: 12px;
  color: var(--primary-blue);
  border: 1.5px solid var(--primary-blue);
  text-align: center;
}

.mobile-nav-menu .nav-highlight-link {
  margin-top: 6px;
  color: var(--primary-blue);
  background-color: var(--primary-blue-light);
  border: 1.5px solid var(--primary-blue);
  text-align: center;
}

body.nav-open {
  overflow: hidden;
}

@media (max-width: 680px) {
  .mobile-nav-toggle {
    display: flex;
  }
  .mobile-nav-drawer {
    display: block;
  }
  .header-container .cta-btn {
    display: none;
  }
}

@media (max-width: 900px) {
  .mobile-nav-toggle {
    display: flex;
  }
  .mobile-nav-drawer {
    display: block;
  }
}

/* Active Nav Link Highlighting */
.main-nav a.active-nav {
  color: var(--primary-blue);
  position: relative;
}

.main-nav a.active-nav::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--primary-blue);
  border-radius: 1px;
}

/* ==========================================================================
   DARK / LIGHT MODE TOGGLE
   ========================================================================== */

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1.5px solid var(--slate-300);
  border-radius: var(--radius-sm);
  background: transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  color: var(--slate-600);
  margin-right: 8px;
}

.theme-toggle:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
  background: var(--primary-blue-light);
}

/* Light Mode Overrides */
[data-theme="light"] {
  /* Most of the site is already light-mode, so minimal changes */
}

/* Dark Mode Overrides (default) */
[data-theme="dark"] .section-problems,
[data-theme="dark"] .ideas-to-books-section {
  /* These are already properly styled */
}

/* ==========================================================================
   SCROLL-TRIGGERED REVEAL ANIMATIONS
   ========================================================================== */

.reveal-on-scroll,
.stagger-children > *,
.reveal-left,
.reveal-right,
.reveal-scale {
  opacity: 1;
  transform: none;
  transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal-on-scroll.revealed,
.stagger-children > .revealed,
.reveal-left.revealed,
.reveal-right.revealed,
.reveal-scale.revealed {
  opacity: 1;
  transform: none;
}

/* ==========================================================================
   STANDARDIZED CARD HOVER EFFECTS
   ========================================================================== */

.problem-card,
.thinking-card,
.impact-card,
.home-book-card,
.intel-card,
.lab-card,
.blog-card,
.product-detail-card,
.book-detail-card {
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              box-shadow 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.problem-card:hover,
.impact-card:hover,
.home-book-card:hover,
.intel-card:hover,
.blog-card:hover,
.product-detail-card:hover,
.book-detail-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(0, 82, 255, 0.08), 0 4px 12px rgba(15, 23, 42, 0.06);
}

.thinking-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(14, 165, 233, 0.15), 0 4px 12px rgba(0, 0, 0, 0.2);
}

.lab-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(14, 165, 233, 0.12), 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* ==========================================================================
   TRUSTED BY — SVG LOGO STYLES
   ========================================================================== */

.trusted-logos {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.logo-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--slate-400);
  transition: color 0.3s ease;
}

.logo-item:hover {
  color: var(--slate-700);
}

.logo-item svg {
  opacity: 0.5;
  transition: opacity 0.3s ease;
}

.logo-item:hover svg {
  opacity: 1;
}

/* ==========================================================================
   TESTIMONIALS SECTION
   ========================================================================== */

.testimonials-section {
  padding: 80px 0;
  background: linear-gradient(180deg, var(--slate-50) 0%, var(--white) 100%);
  border-top: 1px solid var(--slate-200);
}

.testimonials-header {
  text-align: center;
  margin-bottom: 48px;
}

.testimonials-header .category-badge {
  margin-bottom: 12px;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.testimonial-card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 32px;
  position: relative;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(0, 82, 255, 0.06), 0 4px 12px rgba(15, 23, 42, 0.04);
}

.testimonial-quote-icon {
  font-size: 2.5rem;
  line-height: 1;
  color: var(--primary-blue);
  opacity: 0.15;
  font-family: Georgia, serif;
  position: absolute;
  top: 20px;
  right: 24px;
}

.testimonial-text {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--slate-700);
  font-style: italic;
  margin-bottom: 24px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
  border-top: 1px solid var(--slate-100);
  padding-top: 18px;
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-cyan) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 800;
  flex-shrink: 0;
}

.testimonial-author-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.testimonial-name {
  font-family: var(--font-heading);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--slate-900);
}

.testimonial-role {
  font-size: 0.75rem;
  color: var(--slate-500);
  font-weight: 500;
}

.testimonial-company {
  font-weight: 700;
  color: var(--primary-blue);
}

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

@media (max-width: 680px) {
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   ABOUT / PERSONAL STORY SECTION
   ========================================================================== */

.about-story-section {
  padding: 80px 0;
  background: var(--white);
}

.about-story-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-story-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about-story-content .category-badge {
  align-self: flex-start;
}

.about-story-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--slate-900);
  line-height: 1.2;
}

.about-story-text {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--slate-600);
}

.about-story-text strong {
  color: var(--slate-800);
}

.about-milestone-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 8px;
}

.about-milestone {
  text-align: center;
  padding: 16px 12px;
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
}

.about-milestone .num {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary-blue);
}

.about-milestone .lbl {
  display: block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--slate-500);
  margin-top: 4px;
}

.about-social-links {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}

.about-social-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border: 1.5px solid var(--slate-300);
  border-radius: 30px;
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--slate-700);
  transition: all var(--transition-normal);
  letter-spacing: 0.03em;
}

.about-social-links a:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
  background: var(--primary-blue-light);
}

.about-visual-panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.about-philosophy-card {
  background: linear-gradient(135deg, var(--navy-dark) 0%, #1a2744 100%);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  color: var(--white);
}

.about-philosophy-card h4 {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--accent-cyan);
  margin-bottom: 16px;
}

.about-philosophy-quote {
  font-size: 1.15rem;
  font-weight: 500;
  line-height: 1.55;
  color: var(--slate-300);
  font-style: italic;
}

.about-philosophy-quote strong {
  color: var(--white);
  font-weight: 700;
}

.about-continuum-mini {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  padding: 20px 24px;
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
}

.continuum-step-mini {
  padding: 6px 14px;
  font-family: var(--font-heading);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--slate-500);
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: 20px;
  transition: all var(--transition-normal);
}

.continuum-step-mini.active-step {
  background: var(--primary-blue);
  color: var(--white);
  border-color: var(--primary-blue);
}

.continuum-arrow-mini {
  display: flex;
  align-items: center;
  color: var(--slate-300);
  font-size: 0.7rem;
}

@media (max-width: 1024px) {
  .about-story-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 680px) {
  .about-milestone-row {
    grid-template-columns: 1fr;
  }
  .about-social-links {
    flex-direction: column;
  }
  .about-social-links a {
    justify-content: center;
  }
}

/* ==========================================================================
   CONTACT FORM SECTION
   ========================================================================== */

.contact-section {
  padding: 80px 0;
  background: linear-gradient(180deg, var(--navy-dark) 0%, #0d1a33 100%);
  color: var(--white);
}

.contact-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 52px auto;
}

.contact-header .section-title,
.contact-section .section-title,
.contact-title-white {
  color: #ffffff !important;
  font-size: clamp(2rem, 3.8vw, 2.75rem);
  font-weight: 800;
  margin-bottom: 14px;
  line-height: 1.15;
  text-transform: uppercase;
}

.contact-header .section-subtitle,
.contact-section .section-subtitle,
.contact-subtitle-light {
  color: #cbd5e1 !important;
  font-size: 1.05rem;
  line-height: 1.65;
  margin: 0 auto;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-info .section-title {
  color: var(--white);
}

.contact-info .section-subtitle {
  color: var(--slate-400);
}

.contact-method-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 8px;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 20px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
}

.contact-method:hover {
  background: rgba(255,255,255,0.08);
  border-color: var(--accent-cyan);
}

.contact-method-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(14,165,233,0.12);
  border-radius: var(--radius-sm);
  color: var(--accent-cyan);
  flex-shrink: 0;
}

.contact-method-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.contact-method-label {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--slate-500);
}

.contact-method-value {
  font-size: 0.88rem;
  color: var(--slate-200);
  font-weight: 500;
}

.contact-method-value a {
  color: var(--slate-200);
  transition: color var(--transition-fast);
}

.contact-method-value a:hover {
  color: var(--accent-cyan);
}

/* Contact Form Card */
.contact-form-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-lg);
  padding: 36px;
  backdrop-filter: blur(12px);
}

.contact-form {
  display: grid;
  gap: 20px;
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--slate-400);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.88rem;
  transition: all var(--transition-normal);
  outline: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--slate-600);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--accent-cyan);
  background: rgba(255,255,255,0.08);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%2394A3B8' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

.form-select option {
  background: var(--navy-dark);
  color: var(--white);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

.form-submit-btn {
  padding: 14px 28px;
  background: var(--primary-blue);
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
}

.form-submit-btn:hover {
  background: var(--primary-blue-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 82, 255, 0.3);
}

/* Contact Success */
.contact-success {
  display: none;
  text-align: center;
  padding: 40px 20px;
}

.contact-success.visible {
  display: block;
}

.success-icon {
  width: 64px;
  height: 64px;
  background: rgba(16, 185, 129, 0.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.8rem;
}

.success-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 8px;
}

.success-text {
  font-size: 0.88rem;
  color: var(--slate-400);
}

@media (max-width: 900px) {
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   NEWSLETTER CAPTURE BAR
   ========================================================================== */

.newsletter-bar {
  padding: 48px 0;
  background: var(--primary-blue);
  color: var(--white);
}

.newsletter-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}

.newsletter-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.newsletter-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.newsletter-desc {
  font-size: 0.85rem;
  opacity: 0.85;
}

.newsletter-form {
  display: flex;
  gap: 0;
  flex-shrink: 0;
}

.newsletter-input {
  padding: 14px 20px;
  min-width: 280px;
  background: rgba(255,255,255,0.15);
  border: 1.5px solid rgba(255,255,255,0.3);
  border-right: none;
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.88rem;
  outline: none;
  transition: all var(--transition-normal);
}

.newsletter-input::placeholder {
  color: rgba(255,255,255,0.6);
}

.newsletter-input:focus {
  background: rgba(255,255,255,0.22);
  border-color: rgba(255,255,255,0.5);
}

.newsletter-btn {
  padding: 14px 24px;
  background: var(--white);
  color: var(--primary-blue);
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  border: none;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  cursor: pointer;
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.newsletter-btn:hover {
  background: var(--slate-100);
  transform: translateY(-1px);
}

@media (max-width: 768px) {
  .newsletter-container {
    flex-direction: column;
    text-align: center;
  }
  .newsletter-form {
    width: 100%;
  }
  .newsletter-input {
    min-width: unset;
    flex: 1;
  }
}

/* ==========================================================================
   FLOATING CTA BUTTON
   ========================================================================== */

.floating-cta {
  position: fixed;
  bottom: 28px;
  right: 28px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  background: var(--primary-blue);
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  border-radius: 50px;
  box-shadow: 0 8px 30px rgba(0, 82, 255, 0.35);
  z-index: 900;
  opacity: 0;
  transform: translateY(20px) scale(0.9);
  pointer-events: none;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
}

.floating-cta.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: all;
}

.floating-cta:hover {
  background: var(--primary-blue-hover);
  box-shadow: 0 12px 40px rgba(0, 82, 255, 0.45);
  transform: translateY(-2px) scale(1.02);
}

.floating-cta svg {
  flex-shrink: 0;
}

@media (max-width: 680px) {
  .floating-cta span {
    display: none;
  }
  .floating-cta {
    padding: 16px;
    border-radius: 50%;
  }
}

/* ==========================================================================
   INTERACTIVE CONTINUUM NAVIGATION
   ========================================================================== */

.continuum-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: 24px 0;
  margin: 0 auto 32px;
  overflow-x: auto;
}

.continuum-nav-step {
  display: flex;
  align-items: center;
  gap: 0;
  cursor: pointer;
  transition: all var(--transition-normal);
}

.continuum-nav-step .step-label {
  padding: 8px 18px;
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--slate-500);
  background: var(--slate-50);
  border: 1.5px solid var(--slate-200);
  border-radius: 24px;
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.continuum-nav-step:hover .step-label {
  color: var(--primary-blue);
  border-color: var(--primary-blue);
  background: var(--primary-blue-light);
}

.continuum-nav-step .step-arrow {
  padding: 0 6px;
  color: var(--slate-300);
  font-size: 0.75rem;
  user-select: none;
}

@media (max-width: 768px) {
  .continuum-nav {
    justify-content: flex-start;
    padding: 16px 0;
  }
  .continuum-nav-step .step-label {
    font-size: 0.65rem;
    padding: 6px 12px;
  }
}

/* ==========================================================================
   BLOG ARTICLE PAGE STYLES
   ========================================================================== */

.blog-article-hero {
  padding: 60px 0 40px;
  background: var(--white);
  border-bottom: 1px solid var(--slate-200);
}

.blog-article-hero .section-container {
  max-width: 800px;
}

.blog-back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--primary-blue);
  margin-bottom: 24px;
  transition: opacity var(--transition-fast);
}

.blog-back-link:hover {
  opacity: 0.7;
}

.blog-article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 0.78rem;
  color: var(--slate-500);
  font-weight: 500;
}

.blog-article-meta .dot-sep {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--slate-300);
}

.blog-article-title {
  font-family: var(--font-heading);
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--slate-900);
  line-height: 1.2;
  margin-bottom: 16px;
}

.blog-article-subtitle {
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--slate-600);
}

.blog-article-body {
  padding: 48px 0 80px;
}

.blog-article-body .section-container {
  max-width: 760px;
}

.blog-article-body h2 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--slate-900);
  margin: 48px 0 16px;
  line-height: 1.3;
}

.blog-article-body h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--slate-800);
  margin: 32px 0 12px;
}

.blog-article-body p {
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--slate-700);
  margin-bottom: 20px;
}

.blog-article-body blockquote {
  border-left: 4px solid var(--primary-blue);
  margin: 32px 0;
  padding: 20px 24px;
  background: var(--primary-blue-light);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 1.05rem;
  font-style: italic;
  color: var(--slate-700);
  line-height: 1.7;
}

.blog-article-body ul,
.blog-article-body ol {
  margin: 16px 0 24px 24px;
}

.blog-article-body li {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--slate-700);
  margin-bottom: 8px;
}

.blog-article-body strong {
  color: var(--slate-900);
}

.blog-article-body em {
  color: var(--slate-600);
}

.blog-article-body code {
  background: var(--slate-100);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.9rem;
  color: var(--primary-blue);
}

.blog-article-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--slate-200);
}

.blog-tag {
  padding: 6px 14px;
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--slate-600);
}

/* ==========================================================================
   FEATURED IN / SPRINGER BADGE BAR
   ========================================================================== */

.featured-in-bar {
  padding: 28px 0;
  background: var(--slate-50);
  border-top: 1px solid var(--slate-200);
  border-bottom: 1px solid var(--slate-200);
}

.featured-in-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}

.featured-in-label {
  font-family: var(--font-heading);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--slate-500);
  white-space: nowrap;
}

.featured-in-items {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}

.featured-in-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--slate-600);
  transition: color var(--transition-normal);
}

.featured-in-item:hover {
  color: var(--primary-blue);
}

.featured-badge {
  padding: 3px 10px;
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  background: var(--accent-green);
  color: var(--white);
  border-radius: 10px;
}

/* ==========================================================================
   PAGE TRANSITION ANIMATION
   ========================================================================== */

@keyframes pageLoad {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

main {
  animation: pageLoad 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

/* Book card filter transition */
.book-detail-card {
  transition: opacity 0.3s ease, transform 0.3s ease, box-shadow 0.35s ease;
}

/* ==========================================================================
   SKELETON / PULSE LOADING EFFECT (for images)
   ========================================================================== */

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

img[loading="lazy"] {
  background: linear-gradient(90deg, var(--slate-100) 25%, var(--slate-50) 50%, var(--slate-100) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

/* ==========================================================================
   BLOG ESSAY TEMPLATE STYLES (WordPress single.php ready)
   ========================================================================== */

.blog-hero {
  background-color: var(--slate-950);
  color: var(--white);
  padding: 120px 0 60px;
  text-align: center;
}

.blog-hero .container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 20px;
}

.blog-hero-title {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  margin-bottom: 20px;
  line-height: 1.25;
  color: var(--white);
}

.blog-hero-meta {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--slate-400);
}

.blog-article-content {
  max-width: 800px;
  margin: 60px auto;
  padding: 0 20px;
  font-family: var(--font-body);
  line-height: 1.8;
  color: var(--slate-700);
}

.blog-article-lead {
  font-size: 1.2rem;
  font-weight: 500;
  margin-bottom: 2rem;
  color: var(--slate-800);
}

.blog-article-heading {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  color: var(--slate-900);
  margin: 3rem 0 1.25rem;
  font-weight: 800;
}

.blog-article-subheading {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  color: var(--slate-900);
  margin: 2rem 0 1rem;
  font-weight: 700;
}

.blog-article-list {
  margin-bottom: 2rem;
  padding-left: 1.5rem;
}

.blog-article-list li {
  margin-bottom: 0.75rem;
}

.blog-article-blockquote {
  border-left: 4px solid var(--primary-blue);
  padding-left: 1.5rem;
  font-style: italic;
  font-size: 1.15rem;
  margin: 2rem 0;
  color: var(--slate-800);
  background-color: var(--slate-50);
  padding-top: 1rem;
  padding-bottom: 1rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.blog-back-footer {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--slate-200);
  text-align: center;
}

.blog-back-link {
  color: var(--primary-blue);
  font-weight: 700;
  text-decoration: none;
  font-size: 1.05rem;
}

.blog-back-link:hover {
  text-decoration: underline;
}

.badge-contrast {
  background: rgba(255, 255, 255, 0.1) !important;
  color: var(--accent-cyan) !important;
}

/* ==========================================================================
   DEDICATED ABOUT PAGE STYLES
   ========================================================================== */

.about-narrative-section {
  padding: 60px 0 80px 0;
  background-color: var(--white);
}

.about-grid-layout {
  display: grid;
  grid-template-columns: 1.4fr 0.85fr;
  gap: 48px;
  align-items: start;
}

.about-bio-col .section-heading {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 24px;
  line-height: 1.25;
}

.bio-paragraph {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--slate-700);
  margin-bottom: 18px;
}

.bio-paragraph strong {
  color: var(--slate-900);
}

.about-milestones-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 32px 0 40px 0;
}

.milestone-box {
  background-color: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.milestone-num {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-blue);
}

.milestone-lbl {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--slate-600);
}

.subsection-heading {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 16px;
}

.expertise-pills-container {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.expertise-pill {
  font-size: 0.78rem;
  font-weight: 700;
  padding: 8px 14px;
  background-color: var(--primary-blue-light);
  color: var(--primary-blue);
  border-radius: var(--radius-full);
  border: 1px solid rgba(0, 82, 255, 0.15);
}

/* Side Column Cards */
.about-side-card {
  background-color: var(--slate-900);
  border-radius: var(--radius-lg);
  padding: 28px;
  color: var(--white);
  margin-bottom: 24px;
  border: 1px solid var(--slate-800);
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.1);
}

.philosophy-side-card {
  background: linear-gradient(135deg, #0b132b 0%, #1c2541 100%);
  border-color: rgba(0, 82, 255, 0.3);
}

.side-card-badge {
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--accent-cyan);
  margin-bottom: 12px;
}

.philosophy-quote {
  font-size: 1rem;
  line-height: 1.6;
  font-style: italic;
  color: var(--slate-200);
}

.philosophy-quote strong {
  color: var(--white);
  font-style: normal;
}

.side-card-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.mini-books-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mini-books-list li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.mini-books-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.book-mini-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--white);
}

.book-mini-meta {
  font-size: 0.72rem;
  color: var(--slate-400);
}

.about-connect-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.about-connect-links li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.88rem;
}

.about-connect-links svg {
  color: var(--primary-blue);
  flex-shrink: 0;
}

.about-connect-links a {
  color: var(--slate-200);
  transition: color var(--transition-normal);
}

.about-connect-links a:hover {
  color: var(--accent-cyan);
}

@media (max-width: 900px) {
  .about-grid-layout {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* ==========================================================================
   ENTERPRISE DIAGNOSTIC ASSESSMENT PAGE STYLES
   ========================================================================== */

.diagnostic-hero {
  background-color: var(--slate-950);
  color: var(--white);
}

/* Diagnostic Intro & Purpose Section */
.diag-intro-section {
  padding: 60px 0 40px 0;
  background-color: var(--white);
  border-bottom: 1px solid var(--slate-200);
}

.diag-intro-header {
  max-width: 840px;
  margin-bottom: 36px;
}

.diag-intro-title {
  font-family: var(--font-heading);
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--slate-900);
  margin: 12px 0 16px 0;
  line-height: 1.3;
}

.diag-intro-desc {
  font-size: 1.05rem;
  color: var(--slate-600);
  line-height: 1.65;
}

.diag-intro-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.diag-intro-card {
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 26px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: all var(--transition-normal);
}

.diag-intro-card:hover {
  border-color: var(--primary-blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.diag-intro-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--primary-blue-light);
  color: var(--primary-blue);
  display: flex;
  align-items: center;
  justify-content: center;
}

.diag-card-title {
  font-family: var(--font-heading);
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--slate-900);
  margin: 0;
}

.diag-card-text {
  font-size: 0.88rem;
  color: var(--slate-600);
  line-height: 1.55;
  margin: 0;
}

@media (max-width: 900px) {
  .diag-intro-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .diag-intro-title {
    font-size: 1.5rem;
  }
  
  .diag-intro-section {
    padding: 40px 0 28px 0;
  }
}

[data-theme="dark"] .diag-intro-section {
  background-color: var(--navy-dark);
  border-color: var(--slate-800);
}

[data-theme="dark"] .diag-intro-title {
  color: var(--white);
}

[data-theme="dark"] .diag-intro-desc,
[data-theme="dark"] .diag-card-text {
  color: var(--slate-400);
}

[data-theme="dark"] .diag-intro-card {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.08);
}

[data-theme="dark"] .diag-card-title {
  color: var(--white);
}

.diagnostic-app-section {
  padding: 0 0 40px 0;
  background-color: transparent;
}

/* Progress Tracker */
.diag-progress-card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin-bottom: 32px;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.03);
}

.diag-progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  font-size: 0.8rem;
  font-weight: 700;
}

.diag-progress-label {
  color: var(--slate-500);
  letter-spacing: 0.05em;
}

.diag-progress-percent {
  color: var(--primary-blue);
}

.diag-progress-track {
  height: 8px;
  background: var(--slate-100);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.diag-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--primary-blue), var(--accent-cyan));
  border-radius: var(--radius-full);
  transition: width 0.4s ease;
}

/* Main Grid Layout */
.diagnostic-main-grid {
  display: grid;
  grid-template-columns: 1.6fr 0.9fr;
  gap: 36px;
  align-items: start;
}

/* Dimension Cards */
.diag-dimension-card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 24px;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.03);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.diag-dimension-card.answered {
  border-color: rgba(0, 82, 255, 0.3);
}

.dim-header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;

}

.dim-number {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary-blue);
  background: var(--primary-blue-light);
  padding: 6px 14px;
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.dim-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 4px;
}

.dim-desc {
  font-size: 0.88rem;
  color: var(--slate-600);
}

/* Option Cards */
.dim-options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.diag-option-card {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 16px;
  cursor: pointer;
  transition: all 0.25s ease;
}

.diag-option-card:hover {
  background: var(--white);
  border-color: var(--primary-blue);
  box-shadow: 0 4px 12px rgba(0, 82, 255, 0.08);
}

.diag-radio {
  margin-top: 3px;
  accent-color: var(--primary-blue);
}

.diag-option-card:has(.diag-radio:checked) {
  background: rgba(0, 82, 255, 0.04);
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 2px rgba(0, 82, 255, 0.2);
}

.option-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--slate-900);
  display: block;
  margin-bottom: 4px;
}

.option-desc {
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--slate-600);
}

.diag-action-bar {
  margin-top: 32px;
  margin-bottom: 40px;
}

/* Sticky Results Sidebar */
.diag-results-sidebar {
  position: sticky;
  top: 100px;
}

.diag-score-card {
  background: var(--slate-900);
  color: var(--white);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--slate-800);
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.15);
}

.score-card-header {
  margin-bottom: 16px;
}

.side-card-tag {
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--accent-cyan);
}

.score-display {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 12px;
}

.score-number {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--accent-cyan);
  line-height: 1;
}

.score-denom {
  font-size: 1.2rem;
  color: var(--slate-400);
}

.score-tier-badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  background: rgba(0, 82, 255, 0.2);
  color: var(--primary-blue-light);
  border: 1px solid rgba(0, 82, 255, 0.3);
  margin-bottom: 12px;
}

.score-tier-summary {
  font-size: 0.85rem;
  line-height: 1.5;
  color: var(--slate-300);
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.dim-breakdown-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.breakdown-item {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--slate-400);
}

.breakdown-item .item-val {
  font-weight: 700;
  color: var(--white);
}

/* Report Section */
.diagnostic-report-section {
  margin-top: 60px;
  padding-top: 60px;
  border-top: 1px solid var(--slate-200);
}

.report-header-banner {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 40px auto;
}

.report-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 800;
  color: var(--slate-900);
  margin: 12px 0 8px 0;
}

.report-subtitle {
  font-size: 0.95rem;
  color: var(--slate-600);
}

.report-cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.report-card {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 24px;
}

.report-card-icon {
  font-size: 1.5rem;
  margin-bottom: 12px;
}

.report-card-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 8px;
}

.report-card-text {
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--slate-600);
}

.report-bottom-cta {
  background: var(--slate-900);
  color: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.report-bottom-cta h3 {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.report-bottom-cta p {
  font-size: 0.95rem;
  color: var(--slate-300);
  margin-bottom: 24px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 900px) {
  .diagnostic-main-grid {
    grid-template-columns: 1fr;
  }
  .dim-options-grid {
    grid-template-columns: 1fr;
  }
  .report-cards-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   2TO20 LANDING PAGE (AUTHENTIC THEME DESIGN SYSTEM & 2-COLUMN HERO)
   ========================================================================== */

.t20-exact-theme-main {
  background-color: var(--white);
  color: var(--slate-900);
}

.t20-exact-theme-main .section-title {
  text-transform: none !important;
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--slate-900);
}

/* 1. HERO SECTION (2-Column Theme Standard) */
.t20-theme-hero {
  padding: 56px 0 64px 0;
  background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
  border-bottom: 1px solid var(--slate-200);
}

.t20-hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.t20-hero-left {
  display: flex;
  flex-direction: column;
}

.t20-hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 3.8vw, 3rem);
  font-weight: 800;
  line-height: 1.18;
  color: var(--slate-900);
  margin: 12px 0 16px 0;
  letter-spacing: -0.02em;
}

.t20-hero-title .title-accent {
  color: var(--primary-blue);
  font-style: italic;
  font-weight: 700;
}

.t20-hero-subtitle {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--slate-600);
  margin-bottom: 24px;
  max-width: 620px;
}

/* Option A Punchy Hook & Bullets */
.hero-hook-lead {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--slate-900);
  margin-bottom: 8px;
  line-height: 1.4;
}

.hero-bullets-list {
  list-style: none;
  padding: 0;
  margin: 12px 0 14px 0;
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.hero-bullet-item {
  font-size: 0.92rem;
  color: var(--slate-700);
  line-height: 1.5;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.hero-bullet-dot {
  color: var(--primary-blue);
  font-weight: 900;
  font-size: 1rem;
}

.hero-punch-footer {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--primary-blue);
  margin-bottom: 24px;
  font-style: italic;
}

/* Dilemma Callout Card */
.t20-dilemma-box {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-left: 4px solid var(--primary-blue);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 20px 22px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-sm);
}

.t20-dilemma-lead {
  font-size: 0.95rem;
  line-height: 1.55;
  color: var(--slate-700);
  margin-bottom: 8px;
}

.t20-dilemma-lead strong {
  color: var(--slate-900);
}

.t20-dilemma-punch {
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--primary-blue);
  font-weight: 600;
  margin: 0;
}

/* Two Unlocked Advantages Grid */
.t20-treasures-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 28px;
}

.t20-treasure-item {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: 18px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.t20-treasure-item:hover {
  border-color: var(--primary-blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.t20-treasure-badge {
  display: inline-block;
  background-color: var(--primary-blue-light);
  color: var(--primary-blue);
  font-family: var(--font-heading);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: 12px;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.t20-treasure-item h4 {
  font-family: var(--font-heading);
  font-size: 0.98rem;
  font-weight: 800;
  color: var(--slate-900);
  margin: 0 0 6px 0;
  line-height: 1.3;
}

.t20-treasure-item p {
  font-size: 0.82rem;
  color: var(--slate-600);
  line-height: 1.5;
  margin: 0;
}

.t20-hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.t20-hero-guarantee {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--slate-500);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* Right Column: Signature Architecture Showcase Box */
.t20-showcase-box {
  background: linear-gradient(135deg, var(--navy-dark) 0%, #152243 100%);
  border: 1px solid var(--slate-700);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  color: var(--white);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.t20-showcase-box::after {
  content: '';
  position: absolute;
  top: -50px;
  right: -50px;
  width: 140px;
  height: 140px;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.25) 0%, transparent 70%);
  pointer-events: none;
}

.t20-showcase-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  padding-bottom: 14px;
  margin-bottom: 24px;
}

.t20-showcase-title {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--accent-cyan);
  text-transform: uppercase;
}

.t20-showcase-tag {
  background: rgba(0, 82, 255, 0.3);
  border: 1px solid rgba(0, 82, 255, 0.5);
  color: var(--white);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 10px;
}

/* Visual 20 -> 2 Bars */
.t20-showcase-device {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  background: rgba(11, 19, 43, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  margin-bottom: 24px;
}

.t20-showcase-col {
  display: flex;
  flex-direction: column;
}

.t20-showcase-bars {
  display: flex;
  align-items: flex-end;
  height: 90px;
  gap: 4px;
}

.t20-bar-work {
  width: 5px;
  height: 65px;
  background-color: var(--slate-500);
  border-radius: 1px;
  transform-origin: bottom;
  transform: scaleY(0);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.t20-showcase-device.is-animated .t20-bar-work {
  transform: scaleY(1);
}

.t20-showcase-arrow {
  font-size: 26px;
  color: var(--accent-cyan);
  font-weight: bold;
  padding-bottom: 30px;
}

.t20-bar-carrier {
  width: 18px;
  height: 90px;
  background: linear-gradient(180deg, var(--accent-cyan) 0%, var(--primary-blue) 100%);
  border-radius: 3px;
  box-shadow: 0 0 16px rgba(14, 165, 233, 0.5);
  transform-origin: bottom;
  transform: scaleY(0);
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1) 0.5s;
}

.t20-showcase-device.is-animated .t20-bar-carrier {
  transform: scaleY(1);
}

.t20-showcase-lbl {
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-top: 10px;
  color: var(--slate-400);
}

.t20-showcase-lbl.accent {
  color: var(--accent-cyan);
}

/* Showcase Metrics Row */
.t20-showcase-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.t20-stat-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-sm);
  padding: 12px;
  text-align: center;
}

.t20-stat-val {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--accent-cyan);
  display: block;
  line-height: 1.1;
  margin-bottom: 4px;
}

.t20-stat-lbl {
  font-size: 0.65rem;
  color: var(--slate-300);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* 2. SECTION 2: THE LINE THAT MOVED (Visual Operational Shifts) */
.t20-ledger-section {
  padding: 68px 0;
  background-color: var(--slate-50);
  border-bottom: 1px solid var(--slate-200);
}

.t20-shifts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 36px;
}

.t20-shift-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-fast);
}

.t20-shift-card:hover {
  border-color: var(--primary-blue);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.t20-shift-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.t20-shift-cat {
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--primary-blue);
  background-color: var(--primary-blue-light);
  padding: 4px 10px;
  border-radius: 12px;
  text-transform: uppercase;
}

.t20-shift-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 16px;
  line-height: 1.35;
}

.t20-shift-compare {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: auto;
}

.t20-shift-before {
  background-color: #FEF2F2;
  border: 1px solid #FECACA;
  border-left: 3px solid #EF4444;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 10px 14px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.t20-shift-before-icon {
  color: #EF4444;
  font-weight: 800;
  font-size: 0.9rem;
  flex-shrink: 0;
  margin-top: 1px;
}

.t20-shift-before-text {
  font-size: 0.86rem;
  color: #991B1B;
  line-height: 1.45;
}

.t20-shift-after {
  background-color: #F0FDF4;
  border: 1px solid #BBF7D0;
  border-left: 3px solid #10B981;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 10px 14px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.t20-shift-after-icon {
  color: #10B981;
  font-weight: 800;
  font-size: 0.9rem;
  flex-shrink: 0;
  margin-top: 1px;
}

.t20-shift-after-text {
  font-size: 0.88rem;
  font-weight: 600;
  color: #065F46;
  line-height: 1.45;
}

.t20-shift-after-text strong {
  color: #047857;
}

@media (max-width: 768px) {
  .t20-shifts-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
}

/* 3.5 INTERACTIVE CAPACITY & ROI CALCULATOR */
.t20-calculator-section {
  padding: 68px 0;
  background-color: var(--slate-50);
  border-bottom: 1px solid var(--slate-200);
}

.t20-calc-wrapper {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  margin-top: 36px;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
}

.t20-calc-controls {
  padding: 36px 32px;
  border-right: 1px solid var(--slate-200);
}

.t20-calc-group {
  margin-bottom: 28px;
}

.t20-calc-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.t20-calc-label {
  font-family: var(--font-heading);
  font-size: 0.92rem;
  font-weight: 800;
  color: var(--slate-900);
}

.t20-calc-val-badge {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 800;
  color: var(--primary-blue);
  background: var(--primary-blue-light);
  padding: 4px 12px;
  border-radius: 14px;
}

.t20-range-slider {
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: var(--slate-200);
  outline: none;
  cursor: pointer;
  accent-color: var(--primary-blue);
}

.t20-range-limits {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--slate-600);
  margin-top: 6px;
}

/* Calculator Output Dashboard */
.t20-calc-output {
  background: linear-gradient(135deg, var(--navy-dark) 0%, #162447 100%);
  color: var(--white);
  padding: 36px 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.t20-calc-metrics-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.t20-calc-metric-box {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  padding: 14px;
}

.t20-calc-metric-lbl {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--slate-300);
  letter-spacing: 0.04em;
  display: block;
  margin-bottom: 4px;
}

.t20-calc-metric-num {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--white);
}

.t20-calc-hero-result {
  background: rgba(0, 82, 255, 0.2);
  border: 1.5px solid var(--primary-blue);
  border-radius: var(--radius-md);
  padding: 20px;
  text-align: center;
  margin-bottom: 20px;
}

.t20-hero-res-lbl {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  display: block;
  margin-bottom: 6px;
}

.t20-hero-res-num {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--white);
  line-height: 1;
  margin-bottom: 8px;
}

.t20-hero-res-badge {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-cyan);
}

.t20-calc-cta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 18px;
}

/* AUTHORITY STACKING COMPONENT */
.t20-authority-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 36px;
  align-items: center;
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: var(--shadow-sm);
  margin-top: 36px;
}

.t20-auth-badge {
  display: inline-block;
  background-color: var(--primary-blue-light);
  color: var(--primary-blue);
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: 12px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.t20-auth-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 12px;
  line-height: 1.25;
}

.t20-auth-lead {
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--slate-600);
  margin-bottom: 20px;
}

.t20-books-stack-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.t20-book-stack-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-sm);
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--slate-800);
}

.t20-book-pub-tag {
  font-size: 0.7rem;
  color: var(--primary-blue);
  background: var(--white);
  padding: 2px 8px;
  border-radius: 10px;
  border: 1px solid var(--slate-200);
}

@media (max-width: 860px) {
  .t20-calc-wrapper,
  .t20-authority-grid {
    grid-template-columns: 1fr;
  }
  .t20-calc-controls {
    border-right: none;
    border-bottom: 1px solid var(--slate-200);
  }
}

.t20-changes-2x2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 36px;
}

.t20-change-card {
  background-color: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.t20-change-card:hover {
  background-color: var(--white);
  border-color: var(--primary-blue);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.t20-change-tag {
  display: inline-block;
  background-color: var(--primary-blue-light);
  color: var(--primary-blue);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  padding: 3px 10px;
  border-radius: 16px;
  margin-bottom: 12px;
  text-transform: uppercase;
}

.t20-change-card h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 10px;
  line-height: 1.3;
}

.t20-change-card p {
  font-size: 0.92rem;
  color: var(--slate-600);
  line-height: 1.6;
  margin: 0;
}

/* 4. SECTION 4: THE DAY ITSELF (Deliverables Matrix) */
.t20-day-section {
  padding: 68px 0;
  background-color: var(--white);
  border-bottom: 1px solid var(--slate-200);
  color: var(--slate-900);
  scroll-margin-top: 50px;
}

.t20-plans-table-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin-top: 32px;
  margin-bottom: 32px;
}

.t20-plans-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.t20-plans-table th {
  background-color: var(--slate-100);
  color: var(--slate-800);
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 16px 20px;
  border-bottom: 1px solid var(--slate-200);
}

.t20-plans-table td {
  padding: 22px 20px;
  border-bottom: 1px solid var(--slate-200);
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--slate-700);
  vertical-align: top;
}

.t20-plans-table tr:last-child td {
  border-bottom: none;
}

.t20-plans-table tr:hover td {
  background-color: var(--slate-50);
}

.t20-plan-col-name {
  width: 28%;
  font-family: var(--font-heading);
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--slate-900);
}

.t20-plan-col-name strong {
  display: block;
  color: var(--primary-blue);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
  text-transform: uppercase;
}

.t20-plan-col-solves {
  width: 36%;
  color: var(--slate-600);
}

.t20-plan-col-deliverable {
  width: 36%;
  color: var(--slate-800);
  font-weight: 500;
}

@media (max-width: 820px) {
  .t20-plans-table,
  .t20-plans-table tbody,
  .t20-plans-table tr,
  .t20-plans-table td {
    display: block;
    width: 100%;
  }

  .t20-plans-table thead {
    display: none;
  }

  .t20-plans-table tr {
    padding: 20px;
    border-bottom: 1px solid var(--slate-200);
  }

  .t20-plans-table td {
    padding: 8px 0;
    border: none;
  }

  .t20-plan-col-name {
    margin-bottom: 8px;
  }
}

/* 5. SECTION 5: PROOF & EVIDENCE */
.t20-proof-section {
  padding: 68px 0;
  background-color: var(--slate-50);
  border-bottom: 1px solid var(--slate-200);
}

.t20-proof-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 36px;
}

.t20-proof-item {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.t20-proof-item:hover {
  border-color: var(--primary-blue);
  transform: translateY(-2px);
}

.t20-proof-bar {
  width: 40px;
  height: 3px;
  background: var(--primary-blue);
  border-radius: 2px;
  margin-bottom: 16px;
}

.t20-proof-item h3 {
  font-family: var(--font-heading);
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 10px;
}

.t20-proof-item p {
  font-size: 0.9rem;
  color: var(--slate-600);
  line-height: 1.6;
  margin: 0;
}

/* 6. SECTION 6: COST OF WAITING */
.t20-cost-section {
  padding: 68px 0;
  background-color: var(--slate-900);
  border-bottom: 1px solid var(--slate-800);
  color: var(--white);
}

.t20-cost-table-box {
  background-color: var(--navy-card);
  border: 1px solid var(--slate-800);
  border-radius: var(--radius-lg);
  margin-top: 36px;
  overflow: hidden;
}

.t20-cost-row {
  display: grid;
  grid-template-columns: 160px 1fr;
  padding: 22px 28px;
  border-bottom: 1px solid var(--slate-800);
  gap: 24px;
  align-items: center;
}

.t20-cost-row:last-child {
  border-bottom: none;
}

.t20-cost-pill {
  display: inline-block;
  background: rgba(14, 165, 233, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(14, 165, 233, 0.35);
  padding: 5px 12px;
  border-radius: 16px;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-align: center;
  width: fit-content;
}

.t20-cost-desc {
  color: var(--slate-200);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* 7. SECTION 7: CLOSE BANNER */
.t20-close-banner {
  padding: 80px 0 70px;
  background: linear-gradient(135deg, var(--navy-dark) 0%, #1a2744 100%);
  color: var(--white);
  text-align: center;
}

.t20-close-headline {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 14px;
  letter-spacing: -0.02em;
}

.t20-close-subtitle {
  font-size: 1.05rem;
  color: var(--slate-200);
  max-width: 680px;
  margin: 0 auto 32px;
  line-height: 1.6;
}

.t20-close-meta-pill {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 30px;
  padding: 12px 24px;
  margin-top: 28px;
  margin-bottom: 36px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--slate-200);
}

.t20-close-meta-pill .price-tag {
  color: var(--accent-cyan);
  font-weight: 800;
}

.t20-close-mini-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 24px;
  font-size: 0.8rem;
  color: var(--slate-400);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

/* Responsive Overrides */
@media (max-width: 960px) {
  .t20-hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .t20-changes-2x2,
  .t20-day-plans-grid,
  .t20-proof-grid {
    grid-template-columns: 1fr;
  }
  .t20-cost-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

@media (max-width: 680px) {
  .t20-theme-hero,
  .t20-ledger-section,
  .t20-changes-section,
  .t20-day-section,
  .t20-proof-section,
  .t20-cost-section,
  .t20-close-banner {
    padding: 48px 0;
  }

  .t20-treasures-grid {
    grid-template-columns: 1fr;
  }

  .t20-ledger-thead {
    display: none;
  }

  .t20-ledger-trow {
    grid-template-columns: 1fr;
    gap: 10px;
    padding: 18px;
  }

  .t20-hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .t20-close-mini-footer {
    flex-direction: column;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .t20-bar-work,
  .t20-bar-carrier {
    transform: scaleY(1) !important;
    transition: none !important;
  }
}

/* Hero Section */
.t20-hero-section {
  padding: 84px 0 76px;
  background: radial-gradient(circle at 80% 20%, rgba(14, 165, 233, 0.12) 0%, transparent 50%),
              linear-gradient(180deg, var(--navy-dark) 0%, #0c152e 100%);
  border-bottom: 1px solid var(--slate-800);
  color: var(--white);
  position: relative;
}

.t20-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 82, 255, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(14, 165, 233, 0.35);
  padding: 6px 16px;
  border-radius: 30px;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.t20-hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 5vw, 4.2rem);
  font-weight: 800;
  line-height: 1.12;
  color: var(--white);
  margin-bottom: 20px;
  max-width: 980px;
  letter-spacing: -0.025em;
}

.t20-hero-title .hero-highlight-italic {
  display: block;
  background: linear-gradient(90deg, var(--accent-cyan) 0%, #38BDF8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-style: italic;
  font-weight: 700;
  margin-top: 6px;
}

.t20-hero-subtitle {
  font-size: 1.15rem;
  line-height: 1.7;
  color: var(--slate-300);
  max-width: 860px;
  margin-bottom: 36px;
}

/* Executive Hook Box (Curiosity & Dilemma) */
.t20-hero-hook-card {
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(14, 165, 233, 0.3);
  border-left: 5px solid var(--accent-cyan);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  padding: 28px 32px;
  margin-bottom: 36px;
  max-width: 900px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.t20-hook-quote {
  font-size: 1.1rem;
  line-height: 1.65;
  color: var(--slate-100);
  margin-bottom: 14px;
}

.t20-hook-quote strong {
  color: var(--white);
  font-weight: 700;
}

.t20-hook-dilemma {
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--accent-cyan);
  font-weight: 600;
  margin: 0;
}

/* Two Unlocked Advantages Grid */
.t20-hero-advantages {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
  max-width: 900px;
  margin-bottom: 40px;
}

.t20-advantage-item {
  background: rgba(15, 23, 42, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 24px 26px;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.t20-advantage-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-blue) 0%, var(--accent-cyan) 100%);
  opacity: 0.7;
}

.t20-advantage-item:hover {
  border-color: var(--accent-cyan);
  background: rgba(15, 23, 42, 0.9);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 82, 255, 0.2);
}

.t20-adv-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.t20-adv-num {
  background: var(--primary-blue);
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 800;
  padding: 3px 9px;
  border-radius: 14px;
  letter-spacing: 0.05em;
}

.t20-adv-title {
  font-family: var(--font-heading);
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--white);
  margin: 0;
  line-height: 1.3;
}

.t20-adv-desc {
  font-size: 0.94rem;
  color: var(--slate-300);
  line-height: 1.6;
  margin: 0;
}

/* Signature Device: 20 -> 2 */
.t20-theme-device-box {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--slate-800);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  margin-bottom: 40px;
  max-width: 900px;
  box-shadow: var(--shadow-md);
}

.t20-device-flex {
  display: flex;
  align-items: flex-end;
  gap: 36px;
}

.t20-device-col {
  display: flex;
  flex-direction: column;
}

.t20-theme-bars-row {
  display: flex;
  align-items: flex-end;
  height: 110px;
  gap: 6px;
}

.t20-bar-work {
  width: 6px;
  height: 80px;
  background-color: var(--slate-600);
  border-radius: 2px;
  transform-origin: bottom;
  transform: scaleY(0);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.t20-device-flex.is-animated .t20-bar-work {
  transform: scaleY(1);
}

.t20-device-arrow {
  font-size: 32px;
  color: var(--accent-cyan);
  line-height: 1;
  padding-bottom: 44px;
  user-select: none;
  font-weight: bold;
}

.t20-bar-carrier {
  width: 22px;
  height: 110px;
  background: linear-gradient(180deg, var(--accent-cyan) 0%, var(--primary-blue) 100%);
  border-radius: 4px;
  box-shadow: 0 0 20px rgba(14, 165, 233, 0.5);
  transform-origin: bottom;
  transform: scaleY(0);
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1) 0.5s;
}

.t20-device-flex.is-animated .t20-bar-carrier {
  transform: scaleY(1);
}

.t20-device-caption {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 14px;
  color: var(--slate-400);
}

.t20-device-caption.accent {
  color: var(--accent-cyan);
  font-weight: 800;
}

.t20-cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  margin-bottom: 18px;
}

.t20-guarantee-tag {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--slate-400);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Section 2: Comparative Ledger */
.t20-ledger-section {
  padding: 88px 0;
  background-color: var(--slate-50);
  border-bottom: 1px solid var(--slate-200);
}

.t20-ledger-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin-top: 40px;
}

.t20-ledger-card-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 18px 32px;
  background-color: var(--slate-100);
  border-bottom: 1px solid var(--slate-200);
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--slate-700);
}

.t20-ledger-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 26px 32px;
  border-bottom: 1px solid var(--slate-200);
  gap: 40px;
  align-items: center;
}

.t20-ledger-item:last-child {
  border-bottom: none;
}

.t20-ledger-past {
  color: var(--slate-500);
  font-style: italic;
  font-size: 1.02rem;
  line-height: 1.65;
}

.t20-ledger-now {
  color: var(--slate-900);
  font-weight: 600;
  font-size: 1.02rem;
  line-height: 1.65;
}

.t20-ledger-now .dash {
  color: var(--primary-blue);
  font-weight: 800;
  margin-right: 6px;
}

/* Section 3: 2x2 Outcome Cards */
.t20-changes-section {
  padding: 88px 0;
  background-color: var(--white);
  border-bottom: 1px solid var(--slate-200);
}

.t20-cards-2x2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 26px;
  margin-top: 44px;
}

.t20-outcome-card {
  background-color: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 38px 34px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.t20-outcome-card:hover {
  background-color: var(--white);
  border-color: var(--primary-blue);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.t20-card-pill {
  display: inline-block;
  background-color: var(--primary-blue-light);
  color: var(--primary-blue);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.t20-outcome-card h3 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 12px;
  line-height: 1.3;
}

.t20-outcome-card p {
  font-size: 0.98rem;
  color: var(--slate-600);
  line-height: 1.65;
  margin: 0;
}

/* Section 4: The Day */
.t20-day-section {
  padding: 88px 0;
  background: linear-gradient(180deg, var(--navy-dark) 0%, #0c152e 100%);
  border-bottom: 1px solid var(--slate-800);
  color: var(--white);
  scroll-margin-top: 60px;
}

.t20-plans-3col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  margin-top: 44px;
  margin-bottom: 48px;
}

.t20-plan-box {
  background-color: var(--navy-card);
  border: 1px solid var(--slate-800);
  border-radius: var(--radius-lg);
  padding: 34px 28px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.t20-plan-box:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(14, 165, 233, 0.15);
}

.t20-plan-box h3 {
  font-family: var(--font-heading);
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--accent-cyan);
  margin-bottom: 14px;
  line-height: 1.35;
}

.t20-plan-box p {
  font-size: 0.96rem;
  color: var(--slate-300);
  line-height: 1.65;
  margin: 0;
}

/* Section 5: Proof & Evidence */
.t20-proof-section {
  padding: 88px 0;
  background-color: var(--slate-50);
  border-bottom: 1px solid var(--slate-200);
}

.t20-proof-3col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  margin-top: 44px;
}

.t20-proof-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 38px 32px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.t20-proof-card:hover {
  border-color: var(--primary-blue);
  transform: translateY(-2px);
}

.t20-theme-rule {
  width: 44px;
  height: 3px;
  background: var(--primary-blue);
  border-radius: 2px;
  margin-bottom: 20px;
}

.t20-proof-card h3 {
  font-family: var(--font-heading);
  font-size: 1.28rem;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 12px;
}

.t20-proof-card p {
  font-size: 0.96rem;
  color: var(--slate-600);
  line-height: 1.65;
  margin: 0;
}

/* Section 6: Quiet Cost of Waiting */
.t20-cost-section {
  padding: 88px 0;
  background-color: var(--slate-900);
  border-bottom: 1px solid var(--slate-800);
  color: var(--white);
}

.t20-cost-card {
  background-color: var(--navy-card);
  border: 1px solid var(--slate-800);
  border-radius: var(--radius-lg);
  margin-top: 44px;
  overflow: hidden;
}

.t20-cost-row-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  padding: 26px 32px;
  border-bottom: 1px solid var(--slate-800);
  gap: 28px;
  align-items: center;
}

.t20-cost-row-item:last-child {
  border-bottom: none;
}

.t20-cost-badge {
  display: inline-block;
  background: rgba(14, 165, 233, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(14, 165, 233, 0.35);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-align: center;
  width: fit-content;
}

.t20-cost-text {
  color: var(--slate-200);
  font-size: 1.02rem;
  line-height: 1.65;
}

/* Section 7: Close */
.t20-close-section {
  padding: 96px 0 84px;
  background: linear-gradient(135deg, var(--navy-dark) 0%, #1a2744 100%);
  color: var(--white);
  text-align: center;
}

.t20-close-title {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.t20-close-sub {
  font-size: 1.15rem;
  color: var(--slate-200);
  max-width: 760px;
  margin: 0 auto 38px;
  line-height: 1.65;
}

.t20-meta-badge-bar {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: rgba(15, 23, 42, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 30px;
  padding: 14px 28px;
  margin-top: 32px;
  margin-bottom: 44px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--slate-200);
}

.t20-meta-badge-bar .accent-price {
  color: var(--accent-cyan);
  font-weight: 800;
}

.t20-theme-mini-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 30px;
  font-size: 0.84rem;
  color: var(--slate-400);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
}

/* Responsive Breakpoints */
@media (max-width: 900px) {
  .t20-hero-advantages,
  .t20-cards-2x2,
  .t20-plans-3col,
  .t20-proof-3col {
    grid-template-columns: 1fr;
  }

  .t20-device-flex {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }

  .t20-device-arrow {
    transform: rotate(90deg);
    padding: 0 0 0 10px;
  }

  .t20-cost-row-item {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

@media (max-width: 680px) {
  .t20-hero-section,
  .t20-ledger-section,
  .t20-changes-section,
  .t20-day-section,
  .t20-proof-section,
  .t20-cost-section,
  .t20-close-section {
    padding: 56px 0;
  }

  .t20-hero-hook-card {
    padding: 20px;
  }

  .t20-ledger-card-header {
    display: none;
  }

  .t20-ledger-item {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 20px;
  }

  .t20-cta-row {
    flex-direction: column;
    align-items: stretch;
  }

  .t20-theme-bars-row {
    height: 80px;
    gap: 4px;
  }

  .t20-bar-work {
    width: 4px;
    height: 60px;
  }

  .t20-bar-carrier {
    width: 16px;
    height: 80px;
  }

  .t20-theme-mini-footer {
    flex-direction: column;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .t20-bar-work,
  .t20-bar-carrier {
    transform: scaleY(1) !important;
    transition: none !important;
  }
}

.t20-hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 4.5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--white);
  margin-top: 16px;
  margin-bottom: 20px;
  max-width: 960px;
  letter-spacing: -0.02em;
}

.t20-hero-title .hero-highlight-italic {
  display: block;
  color: var(--accent-cyan);
  font-style: italic;
  font-weight: 600;
}

.t20-hero-subtitle {
  font-size: 1.1rem;
  line-height: 1.7;
  color: var(--slate-300);
  max-width: 840px;
  margin-bottom: 32px;
}

/* Executive Hook Callout (Curiosity & Dilemma) */
.t20-hero-hook-card {
  background: rgba(15, 23, 42, 0.75);
  border-left: 4px solid var(--accent-cyan);
  border-top: 1px solid var(--slate-800);
  border-right: 1px solid var(--slate-800);
  border-bottom: 1px solid var(--slate-800);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  padding: 24px 28px;
  margin-bottom: 36px;
  max-width: 860px;
}

.t20-hook-quote {
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--slate-200);
  margin-bottom: 12px;
}

.t20-hook-quote strong {
  color: var(--white);
}

.t20-hook-dilemma {
  font-size: 0.95rem;
  color: var(--accent-cyan);
  font-weight: 600;
  margin: 0;
}

/* Two Unlocked Advantages Grid */
.t20-hero-advantages {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  max-width: 860px;
  margin-bottom: 40px;
}

.t20-advantage-item {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(14, 165, 233, 0.25);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  transition: all var(--transition-normal);
}

.t20-advantage-item:hover {
  border-color: var(--accent-cyan);
  background: rgba(15, 23, 42, 0.85);
  transform: translateY(-2px);
}

.t20-adv-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.t20-adv-num {
  background: var(--primary-blue);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 12px;
}

.t20-adv-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
}

.t20-adv-desc {
  font-size: 0.92rem;
  color: var(--slate-300);
  line-height: 1.55;
  margin: 0;
}

/* Signature Device: 20 -> 2 in Theme Style */
.t20-theme-device-box {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid var(--slate-800);
  border-radius: var(--radius-lg);
  padding: 32px 36px;
  margin-bottom: 40px;
  max-width: 860px;
  box-shadow: var(--shadow-md);
}

.t20-device-flex {
  display: flex;
  align-items: flex-end;
  gap: 36px;
}

.t20-device-col {
  display: flex;
  flex-direction: column;
}

.t20-theme-bars-row {
  display: flex;
  align-items: flex-end;
  height: 110px;
  gap: 6px;
}

.t20-bar-work {
  width: 6px;
  height: 80px;
  background-color: var(--slate-600);
  border-radius: 2px;
  transform-origin: bottom;
  transform: scaleY(0);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.t20-device-flex.is-animated .t20-bar-work {
  transform: scaleY(1);
}

.t20-device-arrow {
  font-size: 28px;
  color: var(--accent-cyan);
  line-height: 1;
  padding-bottom: 44px;
  user-select: none;
  font-weight: bold;
}

.t20-bar-carrier {
  width: 22px;
  height: 110px;
  background: linear-gradient(180deg, var(--accent-cyan) 0%, var(--primary-blue) 100%);
  border-radius: 4px;
  box-shadow: 0 0 16px rgba(14, 165, 233, 0.4);
  transform-origin: bottom;
  transform: scaleY(0);
  transition: transform 0.45s cubic-bezier(0.16, 1, 0.3, 1) 0.5s;
}

.t20-device-flex.is-animated .t20-bar-carrier {
  transform: scaleY(1);
}

.t20-device-caption {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-top: 14px;
  color: var(--slate-400);
}

.t20-device-caption.accent {
  color: var(--accent-cyan);
}

.t20-cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}

.t20-guarantee-tag {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--slate-400);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* Section 2: Ledger */
.t20-ledger-section {
  padding: 80px 0;
  background-color: var(--slate-50);
  border-bottom: 1px solid var(--slate-200);
}

.t20-ledger-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  margin-top: 40px;
}

.t20-ledger-card-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 16px 28px;
  background-color: var(--slate-100);
  border-bottom: 1px solid var(--slate-200);
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--slate-600);
}

.t20-ledger-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  padding: 24px 28px;
  border-bottom: 1px solid var(--slate-200);
  gap: 36px;
  align-items: center;
}

.t20-ledger-item:last-child {
  border-bottom: none;
}

.t20-ledger-past {
  color: var(--slate-500);
  font-style: italic;
  font-size: 1rem;
  line-height: 1.6;
}

.t20-ledger-now {
  color: var(--slate-900);
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.6;
}

.t20-ledger-now .dash {
  color: var(--primary-blue);
  font-weight: 800;
  margin-right: 6px;
}

/* Section 3: 2x2 Outcome Cards */
.t20-changes-section {
  padding: 80px 0;
  background-color: var(--white);
  border-bottom: 1px solid var(--slate-200);
}

.t20-cards-2x2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 44px;
}

.t20-outcome-card {
  background-color: var(--slate-50);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.t20-outcome-card:hover {
  background-color: var(--white);
  border-color: var(--primary-blue);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.t20-card-pill {
  display: inline-block;
  background-color: var(--primary-blue-light);
  color: var(--primary-blue);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 16px;
  text-transform: uppercase;
}

.t20-outcome-card h3 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 12px;
  line-height: 1.3;
}

.t20-outcome-card p {
  font-size: 0.98rem;
  color: var(--slate-600);
  line-height: 1.65;
  margin: 0;
}

/* Section 4: The Day */
.t20-day-section {
  padding: 80px 0;
  background: linear-gradient(180deg, var(--navy-dark) 0%, #0d1a33 100%);
  border-bottom: 1px solid var(--slate-800);
  color: var(--white);
  scroll-margin-top: 60px;
}

.t20-plans-3col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 44px;
  margin-bottom: 48px;
}

.t20-plan-box {
  background-color: var(--navy-card);
  border: 1px solid var(--slate-800);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.t20-plan-box:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-2px);
}

.t20-plan-box h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--accent-cyan);
  margin-bottom: 14px;
  line-height: 1.35;
}

.t20-plan-box p {
  font-size: 0.95rem;
  color: var(--slate-300);
  line-height: 1.6;
  margin: 0;
}

/* Section 5: Proof */
.t20-proof-section {
  padding: 80px 0;
  background-color: var(--slate-50);
  border-bottom: 1px solid var(--slate-200);
}

.t20-proof-3col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 44px;
}

.t20-proof-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  box-shadow: var(--shadow-sm);
}

.t20-theme-rule {
  width: 40px;
  height: 3px;
  background: var(--primary-blue);
  border-radius: 2px;
  margin-bottom: 20px;
}

.t20-proof-card h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--slate-900);
  margin-bottom: 12px;
}

.t20-proof-card p {
  font-size: 0.95rem;
  color: var(--slate-600);
  line-height: 1.6;
  margin: 0;
}

/* Section 6: Quiet Cost of Waiting */
.t20-cost-section {
  padding: 80px 0;
  background-color: var(--slate-900);
  border-bottom: 1px solid var(--slate-800);
  color: var(--white);
}

.t20-cost-card {
  background-color: var(--navy-card);
  border: 1px solid var(--slate-800);
  border-radius: var(--radius-lg);
  margin-top: 44px;
  overflow: hidden;
}

.t20-cost-row-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  padding: 24px 30px;
  border-bottom: 1px solid var(--slate-800);
  gap: 24px;
  align-items: center;
}

.t20-cost-row-item:last-child {
  border-bottom: none;
}

.t20-cost-badge {
  display: inline-block;
  background: rgba(14, 165, 233, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(14, 165, 233, 0.3);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-align: center;
  width: fit-content;
}

.t20-cost-text {
  color: var(--slate-200);
  font-size: 1rem;
  line-height: 1.6;
}

/* Section 7: Close */
.t20-close-section {
  padding: 90px 0 80px;
  background: linear-gradient(135deg, var(--navy-dark) 0%, #1a2744 100%);
  color: var(--white);
  text-align: center;
}

.t20-close-title {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 16px;
}

.t20-close-sub {
  font-size: 1.1rem;
  color: var(--slate-200);
  max-width: 720px;
  margin: 0 auto 36px;
  line-height: 1.6;
}

.t20-meta-badge-bar {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 30px;
  padding: 12px 24px;
  margin-top: 32px;
  margin-bottom: 40px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--slate-300);
}

.t20-meta-badge-bar .accent-price {
  color: var(--accent-cyan);
  font-weight: 800;
}

.t20-theme-mini-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 28px;
  font-size: 0.82rem;
  color: var(--slate-400);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

/* Responsive Overrides for 2to20 */
@media (max-width: 900px) {
  .t20-cards-2x2,
  .t20-plans-3col,
  .t20-proof-3col {
    grid-template-columns: 1fr;
  }

  .t20-device-flex {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }

  .t20-device-arrow {
    transform: rotate(90deg);
    padding: 0 0 0 10px;
  }

  .t20-cost-row-item {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

@media (max-width: 680px) {
  .t20-hero-section,
  .t20-ledger-section,
  .t20-changes-section,
  .t20-day-section,
  .t20-proof-section,
  .t20-cost-section,
  .t20-close-section {
    padding: 56px 0;
  }

  .t20-ledger-card-header {
    display: none;
  }

  .t20-ledger-item {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 20px;
  }

  .t20-cta-row {
    flex-direction: column;
    align-items: stretch;
  }

  .t20-theme-bars-row {
    height: 80px;
    gap: 4px;
  }

  .t20-bar-work {
    width: 4px;
    height: 60px;
  }

  .t20-bar-carrier {
    width: 16px;
    height: 80px;
  }

  .t20-theme-mini-footer {
    flex-direction: column;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .t20-bar-work,
  .t20-bar-carrier {
    transform: scaleY(1) !important;
    transition: none !important;
  }
}