/* ===== RESET & BASE ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --clr-bg: #0d1117;
  --clr-surface: #161b27;
  --clr-surface-2: #1e2535;
  --clr-primary: #7c6ef5;
  --clr-primary-light: rgba(124, 110, 245, 0.15);
  --clr-primary-dark: #5b4fd4;
  --clr-text: #e6eaf4;
  --clr-text-muted: #8892a4;
  --clr-border: #242c3d;
  --clr-discussion: #f59e0b;
  --clr-discussion-bg: rgba(245, 158, 11, 0.08);
  --clr-discussion-border: #b45309;
  --clr-device: #22d3ee;
  --clr-device-bg: rgba(34, 211, 238, 0.07);
  --clr-device-border: #0891b2;
  --clr-accent: #a899f8;
  --clr-accent-gradient-from: #a899f8;
  --clr-accent-gradient-to: #7c6ef5;
  --clr-discussion-title: #fbbf24;
  --clr-device-title: #22d3ee;
  --radius: 12px;
  --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.6);
  --transition: 0.3s ease;
}

/* Light mode overrides */
[data-theme="light"] {
  --clr-bg: #f5f6fa;
  --clr-surface: #ffffff;
  --clr-surface-2: #eef0f5;
  --clr-primary: #6c5ce7;
  --clr-primary-light: rgba(108, 92, 231, 0.1);
  --clr-primary-dark: #5b4fd4;
  --clr-text: #1a1a2e;
  --clr-text-muted: #5c6370;
  --clr-border: #d4d7e0;
  --clr-accent: #6c5ce7;
  --clr-accent-gradient-from: #7c6ef5;
  --clr-accent-gradient-to: #5b4fd4;
  --clr-discussion: #b45309;
  --clr-discussion-bg: rgba(245, 158, 11, 0.1);
  --clr-discussion-border: #d97706;
  --clr-discussion-title: #b45309;
  --clr-device: #0891b2;
  --clr-device-bg: rgba(34, 211, 238, 0.08);
  --clr-device-border: #0891b2;
  --clr-device-title: #0e7490;
  --shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
}

/* Light mode SVG overrides */
[data-theme="light"] svg rect[fill="#1e2535"] {
  fill: #e8eaf0;
}

[data-theme="light"] svg rect[stroke="#242c3d"],
[data-theme="light"] svg rect[fill="#1e2535"] {
  stroke: #c8ccd6;
}

[data-theme="light"] svg text[fill="#e6eaf4"] {
  fill: #1a1a2e;
}

[data-theme="light"] svg text[fill="#8892a4"] {
  fill: #5c6370;
}

[data-theme="light"] svg text[fill="#a899f8"] {
  fill: #6c5ce7;
}

[data-theme="light"] svg text[fill="#fbbf24"] {
  fill: #b45309;
}

[data-theme="light"] svg text[fill="#22d3ee"] {
  fill: #0e7490;
}

[data-theme="light"] svg text[fill="#f87171"] {
  fill: #dc2626;
}

[data-theme="light"] svg text[fill="#34d399"] {
  fill: #059669;
}

/* ===== THEME TOGGLE ===== */
.theme-toggle {
  position: fixed;
  top: 14px;
  right: 20px;
  z-index: 1000;
  width: 56px;
  height: 28px;
  border-radius: 14px;
  border: 1px solid var(--clr-border);
  background: var(--clr-surface-2);
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition);
}

.theme-toggle:hover {
  border-color: var(--clr-primary);
}

/* Circle: 22px, vertically centred in 28px button = 3px from top */
.theme-toggle-slider {
  position: absolute;
  top: 2px;
  right: 3px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--clr-primary);
  z-index: 1;
  transition: transform var(--transition);
}

[data-theme="light"] .theme-toggle-slider {
  transform: translateX(-28px);
}

/* Icons sit above the circle (z-index 2) so they're always visible */
.theme-toggle-icon {
  position: absolute;
  top: 2px;
  height: 22px;
  width: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  z-index: 2;
  pointer-events: none;
  transition: color var(--transition), opacity var(--transition);
}

/* Dark mode: circle is on right (moon side) — moon is white on circle, sun is faded on left */
.theme-toggle-icon.sun {
  left: -2px;
  color: var(--clr-text-muted);
  opacity: 0.5;
}

.theme-toggle-icon.moon {
  right: 0;
  color: #fff;
  opacity: 1;
}

/* Light mode: circle moves to left (sun side) — sun is white on circle, moon is faded on right */
[data-theme="light"] .theme-toggle-icon.sun {
  color: #fff;
  opacity: 1;
}

[data-theme="light"] .theme-toggle-icon.moon {
  color: var(--clr-text-muted);
  opacity: 0.5;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}


/* ===== PAGE CONTAINER ===== */
.page-container {
  min-height: 100vh;
  position: relative;
}

/* ===== PAGES (slide animation) ===== */
.page {
  display: none;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.5s ease, transform 0.5s ease;
  padding: 3rem 2rem 4rem;
  max-width: 1100px;
  margin: 0 auto;
}

.page.active {
  display: block;
}

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

/* ===== HOME PAGE ===== */
.home-hero {
  padding: 2.5rem 0 2rem;
}

.home-hero h1 {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--clr-text);
  margin-bottom: 0.4rem;
  line-height: 1.2;
}

.home-hero h1 .accent {
  background: linear-gradient(135deg, var(--clr-accent-gradient-from), var(--clr-accent-gradient-to));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.home-hero .subtitle {
  font-size: 1rem;
  color: var(--clr-text-muted);
  margin-bottom: 2rem;
}

/* Two-column layout: summary left, task list right */
.home-body {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: 2rem;
  align-items: start;
}

.home-summary {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  line-height: 1.85;
  color: var(--clr-text-muted);
  font-size: 0.95rem;
  position: sticky;
  top: 80px;
}

.home-summary h3 {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--clr-primary);
  margin-bottom: 0.75rem;
}

/* Task list on home — stacked vertically */
.task-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.task-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 1.1rem 1.4rem;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
  position: relative;
  overflow: hidden;
}

.task-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--clr-accent-gradient-from), var(--clr-accent-gradient-to));
  opacity: 0;
  transition: opacity var(--transition);
}

.task-card:hover {
  background: var(--clr-surface-2);
  border-color: rgba(124, 110, 245, 0.35);
  box-shadow: var(--shadow-md);
}

.task-card:hover::before {
  opacity: 1;
}

.task-card .task-badge {
  background: var(--clr-primary-light);
  color: var(--clr-accent);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.3rem 0.6rem;
  border-radius: 6px;
  white-space: nowrap;
  flex-shrink: 0;
}

.task-card .task-info {
  flex: 1;
  min-width: 0;
}

.task-card .task-title {
  font-size: 0.975rem;
  font-weight: 700;
  color: var(--clr-text);
  display: block;
}

.task-card .task-desc {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  line-height: 1.4;
  display: block;
  margin-top: 0.1rem;
}

.task-card .task-arrow {
  color: var(--clr-text-muted);
  font-size: 1rem;
  flex-shrink: 0;
  transition: transform var(--transition), color var(--transition);
}

.task-card:hover .task-arrow {
  transform: translateX(4px);
  color: var(--clr-accent);
}

/* ===== CASE STUDIES ===== */
.case-study-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

@media (max-width: 780px) {
  .case-study-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .case-study-row {
    grid-template-columns: 1fr;
  }
}

.case-study {
  margin-bottom: 0;
}

.case-study-btn {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1.1rem 0.75rem;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  cursor: pointer;
  font-family: inherit;
  text-align: center;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.case-study-btn:hover {
  background: var(--clr-surface-2);
  border-color: rgba(124, 110, 245, 0.35);
  box-shadow: var(--shadow-sm);
}

.case-study-btn.active {
  border-color: var(--clr-primary);
  background: var(--clr-surface-2);
}

.case-study-num {
  background: var(--clr-primary-light);
  color: var(--clr-accent);
  font-size: 0.75rem;
  font-weight: 700;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.case-study-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--clr-text);
  line-height: 1.3;
}

.case-study-toggle {
  display: none;
}

.case-study-body {
  display: none;
  background: var(--clr-surface);
  border: 1px solid var(--clr-primary);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}

.case-study-body.open {
  display: block;
  animation: descFadeIn 0.3s ease;
}

.case-study-body h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--clr-accent);
  margin-bottom: 0.5rem;
  margin-top: 1.5rem;
}

.case-study-body h3:first-child {
  margin-top: 0;
}

.case-study-body p {
  color: var(--clr-text-muted);
  font-size: 0.925rem;
  line-height: 1.8;
  margin-bottom: 0.75rem;
}

.case-study-body strong {
  color: var(--clr-text);
}

.case-study-body em {
  color: var(--clr-text);
}

/* ===== VIDEO EMBEDS ===== */
.video-embed {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 */
  margin-top: 0.75rem;
  border-radius: 8px;
  overflow: hidden;
  background: var(--clr-bg);
}

.video-embed iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* ===== TASK PAGE HEADER ===== */
.task-header {
  margin-bottom: 0.4rem;
  position: relative;
}

.task-header .breadcrumb {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--clr-primary);
  margin-bottom: 0.5rem;
}

.task-header .duration {
  position: absolute;
  top: 0;
  right: 0;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--clr-primary);
}

.task-header h2 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.task-header .task-intro {
  color: var(--clr-text-muted);
  margin-top: 0.75rem;
  font-size: 1rem;
}

/* ===== DOWNLOAD BUTTON ===== */
.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 1rem 0;
  padding: 0.65rem 1.25rem;
  background: var(--clr-primary-light);
  color: var(--clr-accent);
  border: 1px solid rgba(124, 110, 245, 0.35);
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: inherit;
  text-decoration: none;
  transition: background var(--transition), border-color var(--transition);
}

.download-btn:hover {
  background: rgba(124, 110, 245, 0.25);
  border-color: var(--clr-primary);
}

/* ===== SECTION DIVIDER ===== */
.section-divider {
  border: none;
  border-top: 3px solid var(--clr-border);
  margin: 0.5rem 0 1.5rem;
}

/* ===== CONTENT PLACEHOLDERS ===== */
.content-placeholder {
  background: var(--clr-surface);
  border: 2px dashed var(--clr-border);
  border-radius: var(--radius);
  padding: 3rem 2rem;
  text-align: center;
  color: var(--clr-text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  opacity: 0.7;
}

/* ===== CALLOUT BOXES ===== */
.callout {
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
  margin: 1.5rem 0;
  border-left: 4px solid;
}

.callout-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}

.callout-title .icon {
  font-size: 1.2rem;
}

/* Group discussion */
.callout.discussion {
  background: var(--clr-discussion-bg);
  border-color: var(--clr-discussion-border);
}

.callout.discussion .callout-title {
  color: var(--clr-discussion-title);
}

/* On-your-own-device */
.callout.device {
  background: var(--clr-device-bg);
  border-color: var(--clr-device-border);
}

.callout.device .callout-title {
  color: var(--clr-device-title);
}

.callout ol,
.callout ul {
  margin-left: 1.25rem;
  margin-top: 0.5rem;
}

.callout li {
  margin-bottom: 0.35rem;
  color: var(--clr-text);
  font-size: 0.925rem;
}

/* ===== PIPELINE SLIDESHOW ===== */
.pipeline {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 1.5rem;
}

/* Progress steps along the top */
.pipeline-steps {
  display: flex;
  border-bottom: 1px solid var(--clr-border);
  overflow-x: auto;
  scrollbar-width: none;
}

.pipeline-steps::-webkit-scrollbar {
  display: none;
}

.pipeline-step-tab {
  flex: 1;
  min-width: 0;
  padding: 0.65rem 0.5rem;
  text-align: center;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--clr-text-muted);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
  white-space: nowrap;
  position: relative;
}

.pipeline-step-tab:hover {
  color: var(--clr-text);
  background: var(--clr-surface-2);
}

.pipeline-step-tab.visited {
  color: var(--clr-text);
  opacity: 0.6;
}

.pipeline-step-tab.active {
  color: var(--clr-accent);
  border-bottom-color: var(--clr-primary);
  background: var(--clr-surface-2);
}

.pipeline-step-tab .tab-num {
  display: block;
  font-size: 0.6rem;
  opacity: 0.5;
  margin-bottom: 0.1rem;
}

/* Growing pipeline body */
.pipeline-body {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 1.5rem;
  padding: 1.5rem 2rem;
  align-items: start;
}

.pipeline-diagram-wrap svg {
  display: block;
  width: 100%;
}

/* SVG step group animation */
.step-group {
  opacity: 0;
  transition: opacity 0.45s ease;
}

.step-group.revealed {
  opacity: 0.35;
}

.pipeline--slides .step-group.revealed {
  opacity: 0;
}

.step-group.current {
  opacity: 1;
}

/* Description panel */
.pipeline-desc-panel {
  position: sticky;
  top: 20px;
}

.pipeline-desc-slide {
  display: none;
}

.pipeline-desc-slide.active {
  display: block;
  animation: descFadeIn 0.4s ease;
}

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

.pipeline-desc-slide .slide-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  color: var(--clr-text);
}

.pipeline-desc-slide .slide-desc {
  color: var(--clr-text-muted);
  font-size: 0.9rem;
  line-height: 1.75;
}

@media (max-width: 700px) {
  .pipeline-body {
    grid-template-columns: 1fr;
  }
}

/* Pipeline nav buttons */
.pipeline-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2.5rem 1.5rem;
}

.pipeline-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.825rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--clr-border);
  background: var(--clr-surface-2);
  color: var(--clr-text-muted);
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.pipeline-nav-btn:hover {
  background: var(--clr-primary-light);
  color: var(--clr-accent);
  border-color: rgba(124, 110, 245, 0.35);
}

.pipeline-nav-btn:disabled {
  opacity: 0.3;
  cursor: default;
  pointer-events: none;
}

.pipeline-counter {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
}

/* ===== NAVIGATION BUTTONS ===== */
.page-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--clr-border);
  gap: 1rem;
  flex-wrap: wrap;
}

.page-nav .nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.25rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid var(--clr-border);
  background: var(--clr-surface);
  color: var(--clr-text);
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.page-nav .nav-btn:hover {
  background: var(--clr-surface-2);
  border-color: rgba(124, 110, 245, 0.4);
  box-shadow: var(--shadow-sm);
  color: var(--clr-text);
}

.page-nav .nav-btn.primary {
  background: var(--clr-primary);
  color: #fff;
  border-color: var(--clr-primary);
}

.page-nav .nav-btn.primary:hover {
  background: var(--clr-primary-dark);
  border-color: var(--clr-primary-dark);
}

.page-nav .nav-btn .arrow {
  font-size: 1.1rem;
  line-height: 1;
}

.nav-home-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

/* ===== PROGRESS BAR ===== */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--clr-border);
  z-index: 999;
}

.progress-bar .progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--clr-primary), #7c3aed);
  transition: width 0.4s ease;
  width: 0%;
}

/* ===== FOOTER ===== */
.site-footer {
  text-align: center;
  padding: 2rem;
  color: var(--clr-text-muted);
  font-size: 0.8rem;
  border-top: 1px solid var(--clr-border);
  margin-top: 3rem;
  opacity: 0.6;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 780px) {
  .home-body {
    grid-template-columns: 1fr;
  }

  .home-summary {
    position: static;
  }
}

@media (max-width: 640px) {
  .home-hero h1 {
    font-size: 1.65rem;
  }

  .page {
    padding: 2rem 1.25rem 3rem;
  }

  .task-header h2 {
    font-size: 1.5rem;
  }

  .page-nav {
    flex-direction: column;
    align-items: stretch;
  }

  .page-nav .nav-btn {
    justify-content: center;
  }
}

/* ===== PROGRESS FLOWCHART ===== */
.progress-chart-wrap {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 0.75rem 0.75rem 0.25rem;
  margin-bottom: 0.75rem;
  overflow-x: auto;
}
.progress-chart-where {
  font-size: 0.82rem;
  color: var(--clr-accent);
  background: var(--clr-primary-light);
  border-left: 3px solid var(--clr-primary);
  border-radius: 6px;
  margin-bottom: 0.5rem;
  line-height: 1.5;
  padding: 0.4rem 0.65rem;
}

/* ===== INTRODUCTION FLOW ===== */
.intro-flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.intro-flow-arrow {
  display: flex;
  justify-content: center;
  padding: 0.25rem 0;
  opacity: 0.5;
}

.intro-flow-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  width: 100%;
  max-width: 600px;
  padding: 1rem 1.25rem;
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.intro-flow-card:hover {
  border-color: rgba(124, 110, 245, 0.35);
  box-shadow: var(--shadow-sm);
}

.intro-flow-badge {
  background: var(--clr-primary-light);
  color: var(--clr-accent);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.3rem 0.6rem;
  border-radius: 6px;
  white-space: nowrap;
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.intro-flow-content {
  flex: 1;
  min-width: 0;
}

.intro-flow-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 0.2rem;
}

.intro-flow-desc {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
  line-height: 1.5;
  margin-bottom: 0.4rem;
}

.intro-flow-type {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
}

.intro-flow-type--theory {
  background: var(--clr-primary-light);
  color: var(--clr-accent);
}

.intro-flow-type--hands-on {
  background: var(--clr-device-bg);
  color: var(--clr-device-title);
}

.intro-flow-type--discussion {
  background: var(--clr-discussion-bg);
  color: var(--clr-discussion-title);
}