/* ============================================================
   Case Study Page Styles
   ============================================================ */


.case-study-page {
  background-color: #f7f7f8;
  color: #1a1a2e;
}

/* Nav override for case study */
.case-study-nav,
.case-study-nav.is-scrolled {
  background-color: transparent;
  backdrop-filter: none;
  box-shadow: none;
  transition: background-color 0.3s ease, backdrop-filter 0.3s ease, box-shadow 0.3s ease;
}

.case-study-nav.nav-past-hero {
  background-color: rgba(247, 247, 248, 0.9);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.case-study-nav .nav-name {
  color: #ffffff;
  font-size: var(--text-sm);
  font-weight: 400;
  transition: color 0.3s ease;
}

.case-study-nav .nav-name:hover {
  color: rgba(255, 255, 255, 0.7);
}

.case-study-nav.nav-past-hero .nav-name {
  color: #4b5563;
}

.case-study-nav.nav-past-hero .nav-name:hover {
  color: #1a1a2e;
}

/* --- Hero --- */
.cs-hero {
  position: relative;
  padding: 10rem 0 4rem;
  overflow: hidden;
}

.cs-hero--full-image {
  padding: 0;
}

.cs-hero--full-image .cs-hero-bg {
  display: none;
}

.cs-hero-cover {
  position: relative;
  z-index: 1;
  width: 100%;
}

.cs-hero-cover img {
  width: 100%;
  display: block;
  max-height: 680px;
  object-fit: cover;
}

.cs-hero--full-image .cs-hero-content {
  position: relative;
  z-index: 1;
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
}

.cs-hero--full-image .cs-hero-label {
  color: var(--color-accent);
}

.cs-hero--full-image .cs-meta-label {
  color: #6b7280;
}

.cs-hero-prototype {
  margin: var(--space-3xl) 0;
}

.cs-hero-prototype video {
  width: 100%;
  border-radius: 12px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}

.cs-hero-prototype img {
  width: 50%;
  border-radius: 12px;
  display: block;
  margin: 0 auto;
}

.cs-hero-prototype .cs-image-caption {
  margin-top: var(--space-xl);
}

/* --- Metaverse Hero Parallax --- */
.mv-parallax-scene {
  position: relative;
  width: 50%;
  margin: 4rem auto 0;
  aspect-ratio: 1.15 / 1;
}

.mv-hero-caption {
  margin-top: var(--space-lg);
  margin-bottom: 4rem;
}

.mv-parallax-layer {
  position: absolute;
  transition: transform 1.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), opacity 1.2s ease;
}

.mv-parallax-layer img,
.mv-parallax-layer video {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 24px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.12);
}

/* Cards — all visible, spread driven by scroll JS */
.mv-parallax-layer--left {
  width: 32%;
  left: 50%;
  top: 10%;
  z-index: 1;
}

.mv-parallax-layer--left img {
  border-radius: 16px;
}

.mv-parallax-layer--center {
  width: 40%;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  z-index: 3;
}

.mv-parallax-layer--right {
  width: 32%;
  left: 50%;
  top: 10%;
  z-index: 2;
}

.mv-parallax-layer--right img {
  border-radius: 16px;
}

/* Far outer layers */
.mv-parallax-layer--far-left {
  width: 28%;
  left: 50%;
  top: 14%;
  z-index: 0;
}

.mv-parallax-layer--far-left img {
  border-radius: 16px;
}

.mv-parallax-layer--far-right {
  width: 28%;
  left: 50%;
  top: 14%;
  z-index: 0;
}

.mv-parallax-layer--far-right img {
  border-radius: 16px;
}

@media (max-width: 768px) {
  .mv-parallax-scene {
    width: 85%;
  }
}


.cs-hero-results {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xs);
  row-gap: var(--space-xs);
  margin-top: var(--space-2xl);
  text-align: left;
}

.cs-results-label {
  grid-column: 1 / -1;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #6b7280;
  margin-bottom: var(--space-xs);
}

.cs-hero-results.is-visible .cs-result-item {
  opacity: 1;
  transform: translateY(0);
}

.cs-hero-results.is-visible .cs-result-item:nth-child(1) { transition-delay: 0s; }
.cs-hero-results.is-visible .cs-result-item:nth-child(2) { transition-delay: 0.12s; }
.cs-hero-results.is-visible .cs-result-item:nth-child(3) { transition-delay: 0.24s; }


.cs-section--challenge .cs-body p:last-child {
  margin-bottom: var(--space-2xl);
}

.cs-callout.cs-callout--dark {
  border: none;
  background: #ffffff;
  border-radius: 16px;
  padding: 0;
  margin-top: var(--space-2xl);
  text-align: left;
  overflow: hidden;
}

.cs-callout--dark h3 {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent-hover);
  margin: 0;
}

.cs-callout--dark p {
  font-size: var(--text-md);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
  max-width: 700px;
}

.cs-hero-bg {
  position: absolute;
  inset: 0;
  background: #f5f0eb;
  z-index: 0;
}

.cs-hero-content {
  position: relative;
  z-index: 1;
  text-align: left;
}

.cs-hero-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #9ca3af;
  margin-bottom: var(--space-lg);
  display: block;
}

.cs-hero-title {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 600;
  line-height: 1.15;
  color: #1a1a2e;
  margin-bottom: var(--space-sm);
  max-width: 700px;
}

.cs-hero-subtitle {
  font-size: var(--text-md);
  line-height: 1.7;
  color: #4b5563;
  max-width: 600px;
  margin-bottom: var(--space-2xl);
}

.cs-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2xl);
  justify-content: flex-start;
}

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

.cs-meta-label {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #6b7280;
}

.cs-meta-value {
  font-size: var(--text-sm);
  color: #1a1a2e;
}

.cs-meta-link {
  background: linear-gradient(45deg, #FF5C00 0%, #FF0169 30%, #D300C5 70%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  transition: opacity var(--duration) var(--ease-out);
}

.cs-meta-link:hover {
  opacity: 0.7;
}

/* --- Hero Split Layout --- */
.cs-hero-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.cs-hero-image-right {
  display: flex;
  align-items: center;
  justify-content: center;
}

.cs-hero-image-right img {
  width: 100%;
  max-width: 560px;
  border-radius: 12px;
}

/* --- Results Banner --- */
.cs-results {
  background: #ffffff;
  padding: var(--space-3xl) 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.cs-results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2xl);
  text-align: left;
}

.cs-result-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: none;
  padding: 0;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.cs-result-number {
  font-family: var(--font-body);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 700;
  line-height: 1;
  background: linear-gradient(45deg, #FF5C00 0%, #FF0169 30%, #D300C5 70%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cs-result-plus {
  font-size: 0.5em;
  vertical-align: middle;
  margin-right: 4px;
}

.cs-result-label {
  font-size: var(--text-sm);
  color: #4b5563;
  font-weight: 500;
}

/* --- Section --- */
.cs-section {
  padding: var(--space-2xl) 0;
}

.cs-section--alt {
  background: #ffffff;
}

.cs-section--cream {
  background: #f7f7f8;
}

.cs-section--dark {
  background: #1a1a2e;
  color: #ffffff;
}

.cs-section--dark .cs-section-label {
  color: var(--color-accent-hover);
}

.cs-section--dark .cs-section-title {
  color: #ffffff;
}

.cs-section--dark .cs-image-caption {
  color: rgba(255, 255, 255, 0.5);
}

.cs-section--dark .cs-body p {
  color: rgba(255, 255, 255, 0.7);
}

.cs-container {
  max-width: var(--max-width);
}

.cs-section-header {
  margin-bottom: var(--space-sm);
  text-align: left;
}

.cs-section-label {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
  display: block;
}

.cs-section-title {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 600;
  line-height: 1.2;
  color: #1a1a2e;
}

/* --- Body Text --- */
.cs-body p {
  font-size: var(--text-md);
  line-height: 1.8;
  color: #4b5563;
  margin-bottom: var(--space-lg);
  max-width: 700px;
  text-align: left;
}

.cs-body p:last-child {
  margin-bottom: 0;
}

.cs-body--spaced {
  margin-top: var(--space-3xl);
}

.cs-inline-link {
  color: #4b5563;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity var(--duration) var(--ease-out);
}

.cs-inline-link:hover {
  opacity: 0.6;
}

.cs-section--dark .cs-inline-link {
  color: #ffffff;
}

/* --- Journey Steps --- */
.cs-journey-focus {
  font-size: var(--text-sm);
  color: #6b7280;
  margin-bottom: var(--space-xl);
}

.cs-journey-focus strong {
  color: var(--color-accent);
  font-weight: 600;
}

.cs-journey {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr auto 1fr;
  gap: var(--space-md);
  align-items: stretch;
}


.cs-journey-step {
  position: relative;
  background: #f7f7f8;
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 12px;
  padding: var(--space-xl);
  transition: border-color 0.3s, box-shadow 0.3s;
}

.cs-journey-step--active {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-soft);
}

.cs-journey-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: var(--space-2xl);
  color: #d1d5db;
  font-size: 1.5rem;
}

.cs-journey-number {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: var(--text-4xl);
  font-weight: 600;
  color: rgba(124, 58, 237, 0.12);
  line-height: 1;
  display: block;
  margin-bottom: var(--space-sm);
}

.cs-journey-step--active .cs-journey-number {
  color: rgba(124, 58, 237, 0.25);
}

.cs-journey-step h3 {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 600;
  color: #1a1a2e;
  margin-bottom: var(--space-sm);
}

.cs-journey-step p {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: #6b7280;
}

/* --- Problems --- */
.cs-problems {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  margin-top: var(--space-xl);
}

.cs-problem {
  position: relative;
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 12px;
  padding: var(--space-2xl);
  padding-top: calc(var(--space-2xl) + 8px);
  transition: box-shadow 0.3s var(--ease-out), background 0.3s var(--ease-out);
}

.cs-problem:not(.is-selected) {
  background: transparent;
  border-color: rgba(0, 0, 0, 0.06);
  cursor: pointer;
}

.cs-problem:not(.is-selected):hover {
  background: #ffffff;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}

.cs-problem.is-selected {
  background: #ffffff;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  border-color: rgba(0, 0, 0, 0.12);
}


.cs-problem-icon {
  position: absolute;
  top: -16px;
  left: var(--space-xl);
  width: 32px;
  height: 32px;
  background: linear-gradient(45deg, #D300C5 0%, #FF0169 50%, #FF5C00 100%);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: 700;
}

/* --- Challenge Card Modal --- */
.mv-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.mv-modal-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.mv-modal {
  background: #fff;
  border-radius: 20px;
  max-width: 600px;
  width: 90%;
  padding: var(--space-xl);
  position: relative;
  transform: translateY(20px);
  transition: transform 0.3s var(--ease-out);
}

.mv-modal-overlay.is-open .mv-modal {
  transform: translateY(0);
}

.mv-modal-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-muted);
  cursor: pointer;
  line-height: 1;
  padding: 4px 8px;
  border-radius: 8px;
  transition: color 0.2s;
}

.mv-modal-close:hover {
  color: var(--color-text);
}

.mv-modal-visual {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: rgba(0, 0, 0, 0.04);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  border: 1px dashed rgba(0, 0, 0, 0.1);
}

.mv-modal-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.mv-modal-desc {
  font-size: var(--text-base);
  line-height: 1.7;
  color: var(--color-text-light);
}

.cs-problem-thumb {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: 18px;
  overflow: hidden;
  margin-bottom: var(--space-md);
}

.cs-problem-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.mv-modal-visual.has-image {
  background: none;
  border: none;
}

.mv-modal-visual img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 12px;
}

.cs-problem-placeholder {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: rgba(0, 0, 0, 0.04);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  border: 1px dashed rgba(0, 0, 0, 0.1);
}

.cs-problem-placeholder-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-muted);
  letter-spacing: 0.04em;
}

.cs-problem h3 {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 600;
  color: #1a1a2e;
  margin-bottom: var(--space-md);
}

.cs-problem p {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: #6b7280;
}

.cs-img-padded {
  padding: 24px;
  background: #ffffff;
}

.cs-problem-visual {
  margin-top: var(--space-2xl);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.cs-problem-visual img {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  transition: opacity 0.35s var(--ease-out), transform 0.35s var(--ease-out);
}

.cs-problem-visual img.is-fading {
  opacity: 0;
  transform: scale(0.97);
}

.cs-problem-visual img.is-small {
  width: 80%;
  box-shadow: none;
  background: none;
  object-fit: contain;
  display: block;
  margin: 0 auto;
}

.cs-problem-visual .cs-image-caption {
  margin-top: var(--space-lg);
  transition: opacity 0.35s var(--ease-out), transform 0.35s var(--ease-out);
}

.cs-problem-visual .cs-image-caption.is-fading {
  opacity: 0;
  transform: translateY(6px);
}

/* --- Callouts (Goal / Hypothesis) --- */
.cs-callouts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
}

.cs-callout {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-xl);
}

.cs-callout h3 {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-md);
}

.cs-callout p {
  font-size: var(--text-md);
  line-height: 1.7;
  color: #1a1a2e;
}

.cs-callout.cs-callout--dark p {
  color: #4b5563;
}

/* --- Goal Dropdown --- */
.cs-dropdown {
  cursor: pointer;
}

.cs-dropdown-trigger {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) var(--space-xl);
}

.cs-dropdown-trigger::-webkit-details-marker {
  display: none;
}

.cs-dropdown-trigger::after {
  content: '+';
  font-size: var(--text-xl);
  font-weight: 300;
  color: var(--color-accent-hover);
  transition: transform 0.3s var(--ease-out);
}

.cs-dropdown[open] .cs-dropdown-trigger::after {
  content: '−';
}

.cs-dropdown p {
  padding: 0 var(--space-xl) var(--space-lg);
  margin: 0;
}

/* --- Bubble Visual --- */
.cs-bubbles {
  position: relative;
  height: 480px;
  margin-top: var(--space-3xl);
  margin-bottom: var(--space-3xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.cs-bubble {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.95);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-family: var(--font-body);
  font-weight: 400;
  color: rgba(26, 26, 46, 0.45);
  box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.15), 0 8px 24px rgba(0, 0, 0, 0.15);
  transition: transform 0.3s ease, box-shadow 0.3s ease, font-weight 0.3s ease, color 0.3s ease;
  cursor: default;
}


.cs-bubble span {
  padding: 1rem;
  line-height: 1.3;
}

.cs-bubble--lg {
  width: 230px;
  height: 230px;
  font-size: var(--text-lg);
  font-weight: 600;
  color: #1a1a2e;
}

.cs-bubble--ml {
  width: 170px;
  height: 170px;
  font-size: var(--text-sm);
}

.cs-bubble--md {
  width: 140px;
  height: 140px;
  font-size: var(--text-sm);
}

.cs-bubble--sm {
  width: 104px;
  height: 104px;
  font-size: 0.75rem;
}

/* Positions — organic cluster with slight overlaps */
/* 1: Set a product vision — center-left, large */
.cs-bubble--1 {
  top: 80px;
  left: 60px;
  z-index: 2;
  animation: bubbleFloat1 6s ease-in-out infinite;
}

/* 2: Define strategy — center-right, large, overlaps 1 */
.cs-bubble--2 {
  top: 110px;
  left: 280px;
  z-index: 2;
  animation: bubbleFloat2 7s ease-in-out infinite;
}

/* 3: Stakeholder alignment — bottom-center, overlaps 1 & 2 */
.cs-bubble--3 {
  top: 290px;
  left: 200px;
  z-index: 1;
  animation: bubbleFloat1 8s ease-in-out infinite;
}

/* 4: Shape roadmaps — bottom-left, overlaps 3 */
.cs-bubble--4 {
  top: 300px;
  left: 430px;
  z-index: 1;
  animation: bubbleFloat2 6.5s ease-in-out infinite;
}

/* 5: Prototyping — top-left, overlaps 1 */
.cs-bubble--5 {
  top: 0px;
  left: 0px;
  z-index: 3;
  animation: bubbleFloat1 5.5s ease-in-out infinite;
}

/* 6: Cross-org collabs — top-right, overlaps 2 */
.cs-bubble--6 {
  top: 0px;
  left: 420px;
  z-index: 3;
  animation: bubbleFloat2 7.5s ease-in-out infinite;
}

/* 7: Design reviews — right, overlaps 2 */
.cs-bubble--7 {
  top: 100px;
  left: 530px;
  z-index: 3;
  animation: bubbleFloat1 6s ease-in-out infinite;
}

/* 8: Design explorations — below 1 (Set a product vision) */
.cs-bubble--8 {
  top: 290px;
  left: 0px;
  z-index: 3;
  animation: bubbleFloat2 6.5s ease-in-out infinite;
}

@keyframes bubbleFloat1 {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes bubbleFloat2 {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}


/* --- ML Data Signals --- */
.cs-signals {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  margin-top: var(--space-xl);
}

.cs-signal {
  background: none;
  border: none;
  border-radius: 0;
  padding: var(--space-xs) var(--space-sm);
  text-align: center;
}

.cs-signal-icon {
  font-size: 1.5rem;
  display: block;
  margin-bottom: var(--space-xs);
}

.cs-signal-number {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: #9ca3af;
  display: block;
  margin-bottom: 4px;
}

.cs-signal h3 {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  color: #1a1a2e;
  margin-bottom: var(--space-xs);
}

.cs-signal p {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: #6b7280;
}

/* --- Design Principles --- */
.cs-principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2xl);
  margin-top: 40px;
}

.cs-principle-number {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: var(--text-4xl);
  font-weight: 600;
  color: #1a1a2e;
  line-height: 1;
  display: block;
  margin-bottom: var(--space-sm);
}

.cs-principle h3 {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 600;
  color: #1a1a2e;
  margin-bottom: var(--space-sm);
}

.cs-principle {
  text-align: left;
}

.cs-principle p {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: #6b7280;
}

.cs-section--dark .cs-principle-number {
  color: rgba(255, 255, 255, 0.3);
}

.cs-section--dark .cs-principle h3 {
  color: #fff;
}

.cs-section--dark .cs-principle p {
  color: rgba(255, 255, 255, 0.65);
}

/* --- Before & After --- */
.cs-before-after {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-3xl);
}

.cs-ba-card {
  overflow: hidden;
}

.cs-ba-tag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: var(--space-sm);
}

.cs-ba-tag--before {
  background: rgba(0, 0, 0, 0.06);
  color: #6b7280;
}

.cs-ba-tag--after {
  background: var(--color-accent-soft);
  color: var(--color-accent);
}

.cs-ba-image {
  aspect-ratio: 16 / 9;
  overflow: hidden;
}

.cs-ba-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  border-radius: 8px;
  border: 1px solid rgba(0, 0, 0, 0.06);
}

.cs-ba-list {
  padding: var(--space-lg) 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.cs-ba-list li {
  font-size: var(--text-sm);
  color: #4b5563;
  padding-left: var(--space-md);
  position: relative;
}

.cs-ba-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  transform: translateY(-50%);
}

.cs-ba-card--before .cs-ba-list li::before {
  background: #d1d5db;
}

.cs-ba-card--after .cs-ba-list li::before {
  background: var(--color-accent);
}

/* --- Accordion (Explorations) --- */
.cs-accordion {
  margin-top: var(--space-2xl);
  background: #fff;
  border-radius: 12px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  padding: 0 var(--space-lg);
}

.cs-accordion-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-lg) 0;
  cursor: pointer;
  list-style: none;
  user-select: none;
}

.cs-accordion-trigger::-webkit-details-marker {
  display: none;
}

.cs-accordion-title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
}

.cs-accordion-icon {
  font-size: var(--text-xl);
  color: var(--color-muted);
  transition: transform 0.3s var(--ease-out);
  line-height: 1;
}

.cs-accordion[open] .cs-accordion-icon {
  transform: rotate(45deg);
}

.cs-accordion-body {
  padding-bottom: var(--space-xl);
}

.cs-accordion-intro {
  font-size: var(--text-sm);
  color: var(--color-muted);
  margin-bottom: var(--space-lg);
}

.cs-exploration-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.cs-exploration-item img {
  width: 100%;
  border-radius: 8px;
  display: block;
}

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

/* --- Metaverse 3D Phases Visual --- */
.mv-phases-visual {
  margin-top: var(--space-2xl);
  padding: var(--space-md) 0;
}

.mv-phases-scene {
  perspective: 900px;
  position: relative;
  width: 520px;
  height: 400px;
  margin: 0 auto;
}

.mv-phase-layer {
  position: absolute;
  border-radius: 16px;
  padding: var(--space-xl) var(--space-2xl);
  transition: transform 0.15s ease-out;
  width: 340px;
}

.mv-phase-layer--front {
  bottom: 0;
  left: 0;
  background:
    linear-gradient(135deg, rgba(30, 20, 40, 0.85), rgba(20, 15, 35, 0.9)) padding-box,
    linear-gradient(45deg, #FF5C00 0%, #FF0169 30%, #D300C5 70%, #7c3aed 100%) border-box;
  backdrop-filter: blur(16px);
  border: 1.5px solid transparent;
  border-radius: 16px;
  transform: rotateX(3.6deg) rotateY(-2.4deg);
  z-index: 2;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

/* Phase 2: 3D Cube */
.mv-phase-cube {
  position: absolute;
  top: 0;
  right: 0;
  width: 280px;
  height: 280px;
  transform-style: preserve-3d;
  transform: rotateX(12deg) rotateY(-8deg) translateZ(-30px);
  transition: transform 0.15s ease-out;
  z-index: 1;
}

.mv-cube-face {
  position: absolute;
  width: 280px;
  height: 280px;
  border-radius: 16px;
  padding: var(--space-xl) var(--space-2xl);
  backface-visibility: visible;
}

.mv-cube-face--front {
  background: rgba(124, 58, 237, 0.08);
  border: 1px solid rgba(124, 58, 237, 0.25);
  backdrop-filter: blur(8px);
  transform: translateZ(140px);
}

.mv-cube-face--back {
  background: rgba(124, 58, 237, 0.05);
  border: 1px solid rgba(124, 58, 237, 0.15);
  backdrop-filter: blur(8px);
  transform: translateZ(-140px) rotateY(180deg);
}

.mv-cube-face--right {
  background: rgba(124, 58, 237, 0.06);
  border: 1px solid rgba(124, 58, 237, 0.2);
  backdrop-filter: blur(8px);
  transform: rotateY(90deg) translateZ(140px);
}

.mv-cube-face--left {
  background: rgba(124, 58, 237, 0.06);
  border: 1px solid rgba(124, 58, 237, 0.15);
  backdrop-filter: blur(8px);
  transform: rotateY(-90deg) translateZ(140px);
}

.mv-cube-face--top {
  background: rgba(211, 0, 197, 0.06);
  border: 1px solid rgba(124, 58, 237, 0.2);
  backdrop-filter: blur(8px);
  transform: rotateX(90deg) translateZ(140px);
}

.mv-cube-face--bottom {
  background: rgba(80, 30, 200, 0.05);
  border: 1px solid rgba(124, 58, 237, 0.1);
  backdrop-filter: blur(8px);
  transform: rotateX(-90deg) translateZ(140px);
}

.mv-phase-cube .mv-phase-layer-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 350px;
  height: 350px;
  margin-top: -175px;
  margin-left: -175px;
  background: radial-gradient(circle, rgba(124, 58, 237, 0.3) 0%, rgba(211, 0, 197, 0.1) 40%, transparent 70%);
  pointer-events: none;
  z-index: -1;
}

.mv-phase-layer-icon {
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: var(--space-xs);
}

.mv-phase-layer-icon--horizon img {
  opacity: 0.6;
  filter: brightness(10);
}

.mv-phase-layer-label {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  color: #fff;
  margin-bottom: 4px;
}

.mv-phase-layer-tag {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.5);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
}

.mv-phase-layer-desc {
  font-family: var(--font-body);
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.5;
  margin: 8px 0 0;
}

.mv-phase-layer-items {
  list-style: none;
  padding: 0;
  margin: 0;
}

.mv-phase-layer-items li {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.7);
  padding: 4px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.mv-phase-layer-items li:last-child {
  border-bottom: none;
}

.mv-phases-hint {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.35);
  text-align: center;
  margin-top: var(--space-3xl);
  margin-bottom: var(--space-xl);
  letter-spacing: 0.05em;
}

@media (max-width: 600px) {
  .mv-phases-scene {
    width: 100%;
    height: 300px;
  }

  .mv-phase-layer {
    width: 280px;
  }
}

/* --- Vision Sprint Images --- */
.mv-sprint-images {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.mv-sprint-image {
  border-radius: 12px;
  overflow: hidden;
}

.mv-sprint-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

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

/* --- Solution Principle Cards --- */
.mv-solution-principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.mv-solution-card {
  padding: var(--space-lg);
  background: #fff;
  border-radius: 12px;
  border: 1px solid #e5e7eb;
}

.mv-solution-icon {
  font-size: 1.5rem;
  display: block;
  margin-bottom: var(--space-sm);
}

.mv-solution-card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  color: #1a1a2e;
  margin-bottom: var(--space-xs);
}

.mv-solution-card p {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: #6b7280;
  line-height: 1.6;
}

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

/* --- Metaverse Impact --- */
.mv-impact-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.mv-impact-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.mv-impact-emoji {
  font-size: 1.5rem;
  line-height: 1;
  flex-shrink: 0;
}

.mv-impact-number {
  font-family: var(--font-body);
  font-size: var(--text-xl);
  font-weight: 600;
  line-height: 1.3;
  white-space: nowrap;
  background: linear-gradient(45deg, #FF5C00 0%, #FF0169 30%, #D300C5 70%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mv-impact-label {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.6);
  font-weight: 500;
}

.mv-impact-video {
  margin-top: var(--space-2xl);
}

.mv-impact-video video {
  width: 100%;
  border-radius: 16px;
  display: block;
  margin-bottom: var(--space-sm);
}

.mv-impact-media {
  margin-top: var(--space-3xl);
}

.mv-impact-media-stack {
  display: flex;
  align-items: center;
  max-width: 648px;
  margin: 0 auto;
}

.mv-impact-media-stack .mv-impact-screen {
  border-radius: 16px;
  display: block;
  filter: drop-shadow(0 12px 32px rgba(0, 0, 0, 0.35));
}

/* Play image wrapper — tilted, overlapping into video */
.mv-impact-phone {
  position: relative;
  flex-shrink: 0;
  width: 200px;
  margin-right: -40px;
  transform: rotate(-3deg);
  z-index: 2;
}

.mv-impact-phone .mv-impact-screen {
  width: 100%;
}

.mv-impact-app-icon {
  position: absolute;
  top: 50%;
  left: -24px;
  transform: translateY(-50%) rotate(-22deg);
  width: 48px;
  height: 48px;
  border-radius: 12px;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.3));
  z-index: 3;
}

/* Video wrapper */
.mv-impact-video-wrap {
  position: relative;
  flex: 1;
  min-width: 0;
  z-index: 1;
  transform: rotate(3deg);
}

.mv-impact-video-wrap .mv-impact-screen {
  width: 100%;
}

.mv-impact-app-icon--right {
  top: auto;
  bottom: 8px;
  left: auto;
  right: -24px;
  transform: rotate(22deg);
}

.mv-impact-media .cs-image-caption {
  margin-top: var(--space-2xl);
  text-align: center;
}

@media (max-width: 600px) {
  .mv-impact-phone {
    width: 140px;
    margin-right: -24px;
  }
}

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

/* --- Impact Metrics --- */
.cs-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.cs-metrics.is-visible {
  opacity: 1;
  transform: translateY(0);
}

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

.cs-metric-number {
  font-family: var(--font-body);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 700;
  line-height: 1;
  background: linear-gradient(45deg, #FF5C00 0%, #FF0169 30%, #D300C5 70%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cs-metric-plus {
  font-size: 0.5em;
  vertical-align: middle;
  margin-right: 4px;
}

.cs-metric-label {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.6);
  font-weight: 500;
}

.mv-venn {
  position: relative;
  width: 620px;
  height: 400px;
  margin: var(--space-2xl) auto var(--space-lg);
}

.mv-venn-circle {
  position: absolute;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
}

.mv-venn-circle--left {
  left: 40px;
  background: rgba(255, 92, 0, 0.15);
  border: 1.5px solid rgba(255, 92, 0, 0.35);
  justify-content: flex-start;
  padding-left: 24px;
}

.mv-venn-circle--right {
  right: 40px;
  background: rgba(124, 58, 237, 0.15);
  border: 1.5px solid rgba(124, 58, 237, 0.35);
  justify-content: flex-end;
  padding-right: 24px;
}

.mv-venn-label {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  color: #4b5563;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.mv-venn-center {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  text-align: center;
}

.mv-venn-center-label {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  background: linear-gradient(45deg, #FF5C00 0%, #FF0169 30%, #D300C5 70%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

@media (max-width: 768px) {
  .cs-metrics {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

/* --- Exploration Principle Tags --- */
.mv-explore-principles {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: var(--space-sm);
}

.mv-explore-principle {
  font-family: var(--font-body);
  font-size: 0.7rem;
  color: #6b7280;
  background: #f3f4f6;
  padding: 3px 8px;
  border-radius: 20px;
  white-space: nowrap;
}

/* --- Convergence Evaluation Table --- */
.mv-convergence {
  margin-top: var(--space-xl);
  overflow-x: auto;
}

.mv-eval-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--space-lg);
  font-family: var(--font-body);
  font-size: var(--text-sm);
}

.mv-eval-table th {
  text-align: left;
  font-weight: 500;
  color: #6b7280;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid #e5e7eb;
}

.mv-eval-table td {
  padding: var(--space-sm) var(--space-md);
  border-bottom: 1px solid #f0f0f0;
  color: #4b5563;
}

.mv-eval-table td:not(:first-child),
.mv-eval-table th:not(:first-child) {
  text-align: center;
}

.mv-eval-highlight {
  background: rgba(255, 1, 105, 0.04);
}

.mv-eval-highlight td {
  color: #1a1a2e;
}

/* --- Metaverse Exploration Horizontal Scroll --- */
.mv-explore-scroll {
  display: flex;
  gap: var(--space-lg);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  margin-top: var(--space-2xl);
  padding: 0 0 var(--space-lg);
  margin-left: 0;
  margin-right: 0;
  scrollbar-width: none;
}

.mv-explore-scroll::-webkit-scrollbar {
  display: none;
}

.mv-explore-card {
  flex: 0 0 416px;
  scroll-snap-align: start;
  border-radius: 28px;
  overflow: hidden;
  background: #fff;
  border: 1px solid rgba(0, 0, 0, 0.06);
  display: flex;
  flex-direction: column;
}

.mv-explore-card:first-child {
  margin-left: 0;
}

.mv-explore-card:last-child {
  margin-right: var(--space-lg);
}

.mv-explore-media {
  width: 100%;
  overflow: hidden;
  background: #f0f0f0;
  border-radius: 28px 28px 0 0;
}

.mv-explore-media img,
.mv-explore-media video {
  width: 100%;
  display: block;
}

.mv-explore-info {
  padding: var(--space-md) var(--space-lg) var(--space-lg);
  flex: 1;
}

.mv-explore-tag {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.mv-explore-info h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--color-text);
  margin: 4px 0 8px;
}

.mv-explore-info p {
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--color-text-light);
}

@media (max-width: 600px) {
  .mv-explore-card {
    flex: 0 0 320px;
  }
}

/* --- Full-width Image Sections --- */
.cs-image-section {
  padding-top: var(--space-2xl);
}

.cs-image-section .cs-section-header {
  margin-bottom: var(--space-xl);
}

.cs-image-full {
  margin-bottom: var(--space-lg);
}

.cs-image-full img,
.cs-image-full video {
  width: 100%;
  border-radius: 12px;
  border: 1px solid rgba(0, 0, 0, 0.08);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
}

.cs-image-placeholder {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #ede9fe 0%, #e0e7ff 50%, #ede9fe 100%);
  border: 2px dashed rgba(124, 58, 237, 0.25);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.cs-placeholder-label {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  color: #4b5563;
}

.cs-placeholder-hint {
  font-size: var(--text-xs);
  color: #9ca3af;
}

.cs-image-caption {
  font-size: var(--text-sm);
  color: #9ca3af;
  text-align: center;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

/* --- Venn Diagram --- */
.cs-venn {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 220px;
  margin: var(--space-3xl) 0 var(--space-xl);
}

.cs-venn-circle {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: 600;
  position: absolute;
}

.cs-venn-circle span {
  position: relative;
  z-index: 2;
}

.cs-venn-circle--left {
  background: rgba(124, 58, 237, 0.15);
  color: rgba(255, 255, 255, 0.9);
  left: calc(50% - 180px);
}

.cs-venn-circle--right {
  background: rgba(80, 120, 235, 0.15);
  color: rgba(255, 255, 255, 0.9);
  right: calc(50% - 180px);
}

.cs-venn-center {
  position: absolute;
  z-index: 3;
  text-align: center;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #fff;
  background: rgba(124, 58, 237, 0.35);
  width: 100px;
  height: 100px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cs-venn-center span {
  line-height: 1.4;
}

/* --- Impact Grid --- */
.cs-impact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin: var(--space-3xl) 0;
}

.cs-impact-card {
  background: none;
  border: none;
  border-radius: 0;
  padding: 0;
}

.cs-impact-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: var(--space-md);
}

.cs-impact-card {
  text-align: left;
}

.cs-impact-card h3 {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 600;
  color: #ffffff;
  margin-bottom: var(--space-sm);
}

.cs-impact-card p {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.6);
}

.cs-brand-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: var(--space-md);
  justify-content: flex-start;
}

.cs-brand-tag {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.8);
  background: none;
  border: none;
  padding: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.cs-brand-logo {
  width: 16px;
  height: 16px;
  object-fit: contain;
  border-radius: 40px;
}

.cs-brand-logo--bordered {
  outline: 1px solid #000000;
  outline-offset: 0;
}

/* --- Quote --- */
.cs-quote {
  margin-top: var(--space-3xl);
  border-left: none;
  border-top: 3px solid rgba(255, 255, 255, 0.2);
  padding-top: var(--space-xl);
  text-align: center;
}

.cs-quote p {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 500;
  font-style: italic;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.4;
  margin-bottom: var(--space-md);
}

.cs-quote cite {
  font-family: var(--font-body);
  font-style: normal;
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.45);
  font-weight: 500;
}

/* --- Reflections --- */
.cs-reflections {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.cs-reflection {
  background: #ffffff;
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: 16px;
  padding: var(--space-xl);
}

.cs-reflection h3 {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 600;
  color: #1a1a2e;
  margin-bottom: var(--space-sm);
}

.cs-reflection p {
  font-size: var(--text-sm);
  line-height: 1.7;
  color: #6b7280;
}

/* --- Back to Top --- */
.cs-back-to-top {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  background: #1a1a2e;
  color: #ffffff;
  border-radius: 24px;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  font-size: var(--text-sm);
  text-decoration: none;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out), background-color 0.3s var(--ease-out);
  z-index: 50;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.cs-back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.cs-back-to-top-arrow {
  font-size: var(--text-base);
  line-height: 1;
}

.cs-back-to-top-label {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
}

.cs-back-to-top:hover {
  background: var(--color-accent);
}

/* --- Responsive --- */
@media (max-width: 767px) {
  .cs-hero {
    padding: 7rem 0 3rem;
  }

.cs-hero-meta {
    gap: var(--space-lg);
  }

  .cs-results-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .cs-journey {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .cs-journey-connector {
    padding-top: 0;
    transform: rotate(90deg);
  }

  .cs-problems {
    grid-template-columns: 1fr;
  }

  .cs-callouts {
    grid-template-columns: 1fr;
  }

  .cs-principles {
    grid-template-columns: 1fr;
  }

  .cs-signals {
    grid-template-columns: 1fr;
  }

  .cs-before-after {
    grid-template-columns: 1fr;
  }

  .cs-reflections {
    grid-template-columns: 1fr;
  }

  .cs-bubbles {
    height: 520px;
  }

  .cs-bubble--lg {
    width: 160px;
    height: 160px;
    font-size: var(--text-sm);
  }

  .cs-bubble--ml {
    width: 135px;
    height: 135px;
    font-size: 0.7rem;
  }

  .cs-bubble--md {
    width: 120px;
    height: 120px;
    font-size: 0.7rem;
  }

  .cs-bubble--sm {
    width: 95px;
    height: 95px;
    font-size: 0.65rem;
  }

  .cs-bubbles { height: 580px; max-width: 340px; }
  .cs-bubble--1 { top: 60px; left: 10px; }
  .cs-bubble--2 { top: 80px; left: 150px; }
  .cs-bubble--3 { top: 240px; left: 80px; }
  .cs-bubble--4 { top: 380px; left: 150px; }
  .cs-bubble--5 { top: 0px; left: 0px; }
  .cs-bubble--6 { top: 0px; left: 200px; }
  .cs-bubble--7 { top: 150px; left: 240px; }
  .cs-bubble--8 { top: 380px; left: 10px; }

  .cs-hero-results {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .cs-impact-grid {
    grid-template-columns: 1fr;
  }

  .cs-venn {
    height: 180px;
  }

  .cs-venn-circle {
    width: 130px;
    height: 130px;
    font-size: var(--text-xs);
  }

  .cs-venn-circle--left {
    left: calc(50% - 130px);
  }

  .cs-venn-circle--right {
    right: calc(50% - 130px);
  }

  .cs-venn-center {
    width: 80px;
    height: 80px;
    font-size: 0.6rem;
  }
}