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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Assistant", sans-serif;
  font-size: 17px;
  line-height: 1.75;
  color: #334155;
  background: #ffffff;
  -webkit-font-smoothing: antialiased;
}

/* ============================================
   LAYOUT
   ============================================ */
.blog-layout {
  display: flex;
  max-width: 1400px;
  margin: 0 auto;
  padding: 40px 24px;
  gap: 60px;
}

/* ============================================
   SIDEBAR NAVIGATION
   ============================================ */
.blog-sidebar {
  position: sticky;
  top: 40px;
  width: 280px;
  min-width: 280px;
  max-height: calc(100vh - 80px);
  overflow-y: auto;
  padding-right: 20px;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.blog-sidebar::-webkit-scrollbar {
  display: none;
}

/* Close button — hidden on desktop */
.sidebar-close {
  display: none;
  align-items: center;
  gap: 8px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: "Assistant", sans-serif;
  font-size: 14px;
  font-weight: 600;
  color: #64748b;
  padding: 8px 12px;
  border-radius: 8px;
  transition: all 0.2s ease;
  margin-bottom: 16px;
}

.sidebar-close:hover {
  color: #bf3425;
  background: #fef7f6;
}

.sidebar-close svg {
  flex-shrink: 0;
}

.blog-sidebar-title {
  font-family: "Archivo", sans-serif;
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: #9d9d9c;
  text-transform: uppercase;
  margin-bottom: 16px;
  padding-left: 12px;
}

.blog-sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.blog-sidebar-link {
  font-family: "Assistant", sans-serif;
  font-weight: 600;
  font-size: 14px;
  color: #64748b;
  padding: 10px 12px;
  border-radius: 6px;
  text-decoration: none;
  transition: all 0.2s ease;
  display: block;
}

.blog-sidebar-link:hover {
  color: #47577c;
  background-color: #f8fafc;
}

.blog-sidebar-link.active {
  color: #bf3425;
  background-color: #fef7f6;
  font-weight: 700;
}

/* ============================================
   MOBILE NAV TOGGLE
   ============================================ */
.mobile-nav-toggle {
  display: none;
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1001;
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, #bf3425 0%, #9d2a1e 100%);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(191, 52, 37, 0.4);
  transition: all 0.3s ease;
  align-items: center;
  justify-content: center;
}

.mobile-nav-toggle:hover {
  transform: scale(1.1);
}

.mobile-nav-toggle svg {
  width: 24px;
  height: 24px;
  stroke: #ffffff;
}

/* ============================================
   MAIN CONTENT
   ============================================ */
.blog-content {
  flex: 1;
  max-width: 900px;
  min-width: 0;
}

/* ============================================
   BLOG META
   ============================================ */
.blog-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
  color: #64748b;
  margin-bottom: 10px;
}

.blog-meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.blog-meta-icon {
  width: 16px;
  height: 16px;
  color: #64748b;
  flex-shrink: 0;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
.blog-content h1 {
  font-family: "Archivo", sans-serif;
  font-weight: 700;
  font-size: 2.75rem;
  line-height: 1.15;
  color: #1e293b;
  margin-bottom: 1.5rem;
}

.blog-content h2 {
  font-family: "Archivo", sans-serif;
  font-weight: 700;
  font-size: 1.75rem;
  color: #1e293b;
  margin-top: 3.5rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #bf3425;
}

.blog-content h3 {
  font-family: "Archivo", sans-serif;
  font-weight: 600;
  font-size: 1.25rem;
  color: #47577c;
  margin-top: 2rem;
  margin-bottom: 0.875rem;
}

.blog-content h4 {
  font-family: "Archivo", sans-serif;
  font-weight: 600;
  font-size: 1.1rem;
  color: #1e293b;
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

.blog-content p {
  margin-bottom: 1.5rem;
  font-size: 1.0625rem;
}

.blog-content ul,
.blog-content ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.blog-content li {
  margin-bottom: 0.625rem;
  font-size: 1.0625rem;
}

.blog-content a {
  color: #47577c;
  text-decoration: underline;
  text-underline-offset: 2px;
  font-weight: 600;
  transition: color 0.2s;
}

.blog-content a:hover {
  color: #bf3425;
}

/* Subtitle */
.subtitle {
  font-size: 1.25rem;
  font-style: italic;
  color: #47577c;
  margin-bottom: 2rem;
}

/* Drop Cap */
.drop-cap::first-letter {
  float: left;
  font-family: "Archivo", sans-serif;
  font-size: 4.5rem;
  font-weight: 700;
  line-height: 0.8;
  color: #bf3425;
  margin-right: 12px;
  margin-top: 8px;
}

/* ============================================
   IMAGES
   ============================================ */
.full-width-image {
  width: 100%;
  border-radius: 12px;
  margin: 2rem 0;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  display: block;
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
}

.full-width-image:hover {
  transform: scale(1.01);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.image-caption {
  font-size: 0.875rem;
  color: #64748b;
  text-align: center;
  margin-top: -1.25rem;
  margin-bottom: 2rem;
  font-style: italic;
}

/* ============================================
   SPLIT LAYOUT
   ============================================ */
.split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: center;
  margin: 2.5rem 0;
}

.split-layout.reverse {
  direction: rtl;
}

.split-layout.reverse > * {
  direction: ltr;
}

.split-image img {
  width: 100%;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  display: block;
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
}

.split-image img:hover {
  transform: scale(1.01);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.split-text h3 {
  margin-top: 0;
}

/* ============================================
   IMAGE GRID (3-UP)
   ============================================ */
.image-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin: 2rem 0;
}

.image-grid-item img {
  width: 100%;
  border-radius: 10px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
  display: block;
  transition:
    transform 0.3s ease,
    box-shadow 0.3s ease;
}

.image-grid-item img:hover {
  transform: scale(1.02);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.14);
}

.image-grid-item .image-caption {
  margin-top: 0.5rem;
  margin-bottom: 0;
}

/* ============================================
   INTRO / HIGHLIGHT CARDS
   ============================================ */
.intro-card {
  background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
  border-radius: 16px;
  padding: 2rem;
  margin: 2rem 0;
  border: 1px solid #e2e8f0;
  position: relative;
  overflow: hidden;
}

.intro-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, #bf3425, #47577c);
}

.highlight-box {
  background: linear-gradient(135deg, #fef7f6 0%, #fff8f7 100%);
  border-radius: 12px;
  padding: 1.5rem 2rem;
  margin: 2rem 0;
  border: 1px solid #fbd5d0;
}

.highlight-box p {
  margin-bottom: 0;
}
.highlight-box h4 {
  color: #bf3425;
  margin-top: 0;
}

.highlight-box.dark {
  background: linear-gradient(135deg, #1e293b 0%, #2d3a52 100%);
  border-color: #334155;
  color: #e2e8f0;
}

.highlight-box.dark h4 {
  color: #f87171;
}
.highlight-box.dark p {
  color: #cbd5e1;
  margin-bottom: 0;
}

/* ============================================
   FEATURE GRID
   ============================================ */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin: 2rem 0;
}

.feature-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.25rem;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  transition: all 0.3s ease;
}

.feature-item:hover {
  border-color: #47577c;
  box-shadow: 0 8px 25px -5px rgba(71, 87, 124, 0.15);
  transform: translateY(-2px);
}

.feature-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #47577c 0%, #1e293b 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: #ffffff;
  transition: background 0.3s;
}

.feature-item:hover .feature-icon {
  background: linear-gradient(135deg, #bf3425 0%, #9d2a1e 100%);
}

.feature-item h4 {
  margin-top: 0;
  margin-bottom: 0.5rem;
}
.feature-item p {
  margin-bottom: 0;
  font-size: 0.9375rem;
  color: #475569;
}

/* ============================================
   STATS GRID
   ============================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 2rem 0;
}

.stat-card {
  background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
  transition: all 0.3s ease;
}

.stat-card:hover {
  border-color: #bf3425;
  box-shadow: 0 8px 25px -5px rgba(191, 52, 37, 0.12);
  transform: translateY(-2px);
}

.stat-value {
  font-family: "Archivo", sans-serif;
  font-size: 1.625rem;
  font-weight: 700;
  color: #bf3425;
  margin-bottom: 0.5rem;
  line-height: 1.2;
}

.stat-label {
  font-size: 0.875rem;
  color: #64748b;
  line-height: 1.4;
}

/* ============================================
   DATA TABLE
   ============================================ */
.data-table-container {
  overflow-x: auto;
  margin: 2rem 0;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
  background: #ffffff;
}

.data-table thead {
  background: linear-gradient(135deg, #1e293b 0%, #2d3a52 100%);
}

.data-table th {
  padding: 14px 16px;
  text-align: left;
  font-family: "Archivo", sans-serif;
  font-weight: 600;
  font-size: 0.875rem;
  color: #ffffff;
  letter-spacing: 0.02em;
}

.data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid #f1f5f9;
  color: #334155;
  vertical-align: top;
}

.data-table tbody tr:hover {
  background-color: #f8fafc;
}
.data-table tbody tr:last-child td {
  border-bottom: none;
}

/* ============================================
   INFOGRAPHIC PLACEHOLDERS
   ============================================ */
.infographic-placeholder {
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  border: 2px dashed #cbd5e1;
  border-radius: 12px;
  padding: 2.5rem 2rem;
  margin: 2.5rem 0;
  text-align: center;
  color: #64748b;
}

.infographic-label {
  font-family: "Archivo", sans-serif;
  font-weight: 700;
  font-size: 0.875rem;
  color: #47577c;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.infographic-description {
  font-size: 0.9375rem;
  color: #64748b;
  line-height: 1.6;
}

/* ============================================
   LEARN MORE CARDS
   ============================================ */
.learn-more-container {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin: 2rem 0;
}

.learn-more-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  text-decoration: none;
  transition: all 0.3s ease;
}

.learn-more-card:hover {
  border-color: #bf3425;
  box-shadow: 0 8px 25px -5px rgba(191, 52, 37, 0.15);
  transform: translateY(-2px);
}

.learn-more-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, #47577c 0%, #1e293b 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.3s;
  color: #ffffff;
}

.learn-more-card:hover .learn-more-icon {
  background: linear-gradient(135deg, #bf3425 0%, #9d2a1e 100%);
}

.learn-more-icon svg {
  width: 24px;
  height: 24px;
  color: #ffffff;
}

.learn-more-text {
  display: flex;
  flex-direction: column;
}

.learn-more-title {
  font-family: "Archivo", sans-serif;
  font-weight: 600;
  font-size: 1rem;
  color: #1e293b;
  transition: color 0.3s;
}

.learn-more-card:hover .learn-more-title {
  color: #bf3425;
}

.learn-more-desc {
  font-size: 0.875rem;
  color: #64748b;
  margin-top: 0.25rem;
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
  background: linear-gradient(135deg, #fef7f6 0%, #ffffff 100%);
  border: 2px solid #bf3425;
  border-radius: 16px;
  padding: 2rem;
  margin: 2.5rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, #bf3425, #47577c);
}

.cta-section p {
  margin-bottom: 1.25rem;
  color: #1e293b;
  font-size: 1.125rem;
}

.cta-button {
  display: inline-block;
  padding: 0.875rem 2rem;
  background: linear-gradient(135deg, #bf3425 0%, #9d2a1e 100%);
  color: #ffffff !important;
  font-family: "Archivo", sans-serif;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border-radius: 8px;
  transition: all 0.3s ease;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px -5px rgba(191, 52, 37, 0.4);
  color: #ffffff !important;
}

/* ============================================
   REFERENCES LIST
   ============================================ */
.references-list {
  padding-left: 1.5rem;
}

.references-list li {
  font-size: 0.9375rem;
  color: #475569;
  margin-bottom: 1rem;
  line-height: 1.65;
}

.references-list a {
  font-weight: 400;
  word-break: break-all;
}

/* ============================================
   AUTHOR SECTION
   ============================================ */
.author-section {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid #e2e8f0;
}

.author-card {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  background: linear-gradient(135deg, #f8fafc 0%, #ffffff 100%);
  border-radius: 20px;
  padding: 2rem;
  border: 1px solid #e2e8f0;
}

.author-image-wrapper {
  flex-shrink: 0;
}

.author-image {
  width: 180px;
  height: 180px;
  border-radius: 16px;
  object-fit: cover;
  display: block;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.15);
}

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

.author-name {
  font-family: "Archivo", sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
  color: #1e293b;
  margin-bottom: 4px;
  text-decoration: underline;
  text-decoration-color: #bf3425;
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

.author-title {
  font-size: 1rem;
  font-weight: 600;
  color: #47577c;
  margin-bottom: 16px;
}

.author-social {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
}

.author-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: #f8fafc;
  border-radius: 10px;
  transition:
    transform 0.2s,
    background 0.2s;
  text-decoration: none;
}

.author-social a:hover {
  transform: scale(1.1);
  background: #e2e8f0;
}

.author-social svg {
  width: 24px;
  height: 24px;
}

.about-author-label {
  font-family: "Archivo", sans-serif;
  font-weight: 700;
  font-size: 0.875rem;
  color: #bf3425;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.author-bio {
  font-size: 0.9375rem;
  color: #475569;
  line-height: 1.7;
  text-align: justify;
  margin: 0;
}

/* ============================================
   SECTION SCROLL MARGIN
   ============================================ */
section {
  scroll-margin-top: 40px;
}

/* ============================================
   RESPONSIVE — 1024px
   ============================================ */
@media (max-width: 1024px) {
  .blog-layout {
    flex-direction: column;
    gap: 32px;
  }

  /* Sidebar becomes horizontal pills on tablet */
  .blog-sidebar {
    position: relative;
    top: 0;
    width: 100%;
    min-width: 100%;
    max-height: none;
    padding-right: 0;
    padding-bottom: 24px;
    border-bottom: 1px solid #e2e8f0;
    align-self: auto;
  }

  .blog-sidebar-nav {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
  }

  .blog-sidebar-link {
    font-size: 13px;
    padding: 8px 12px;
  }

  .blog-content h1 {
    font-size: 2rem;
  }

  .split-layout {
    grid-template-columns: 1fr;
  }

  .split-layout.reverse {
    direction: ltr;
  }
  .split-layout.reverse > * {
    direction: ltr;
  }

  .feature-grid,
  .learn-more-container {
    grid-template-columns: 1fr;
  }

  .image-grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .author-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .author-social {
    justify-content: center;
  }
  .author-bio {
    text-align: center;
  }
}

/* ============================================
   RESPONSIVE — 768px (Mobile, sidebar overlay)
   ============================================ */
@media (max-width: 768px) {
  /* Show hamburger button */
  .mobile-nav-toggle {
    display: flex;
  }

  /* Sidebar becomes full-screen overlay */
  .blog-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    background: #ffffff;
    z-index: 999;
    padding: 20px;
    overflow-y: auto;
    transform: translateY(-100%);
    transition: transform 0.3s ease;
    border-bottom: none;
    max-height: 100vh;
    align-self: auto;
  }

  .blog-sidebar.active {
    transform: translateY(0);
  }

  /* Show close button inside sidebar */
  .sidebar-close {
    display: flex;
  }

  .blog-sidebar-nav {
    flex-direction: column;
    gap: 4px;
  }

  .blog-sidebar-link {
    font-size: 16px;
    padding: 14px 16px;
    border-radius: 8px;
  }

  .blog-sidebar-title {
    font-size: 12px;
    margin-bottom: 20px;
    padding-top: 8px;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .image-grid-3 {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   RESPONSIVE — 640px
   ============================================ */
@media (max-width: 640px) {
  .blog-layout {
    padding: 20px 12px;
  }

  .blog-content h1 {
    font-size: 1.75rem;
  }
  .blog-content h2 {
    font-size: 1.5rem;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .intro-card,
  .highlight-box {
    padding: 1.25rem;
  }

  .cta-button {
    width: 100%;
    text-align: center;
    padding: 1rem;
  }

  .learn-more-card {
    padding: 1rem;
  }

  .learn-more-icon {
    width: 40px;
    height: 40px;
  }

  .learn-more-icon svg {
    width: 20px;
    height: 20px;
  }

  .feature-item {
    flex-direction: column;
  }
  .feature-icon {
    width: 40px;
    height: 40px;
  }

  .author-image {
    width: 140px;
    height: 140px;
  }

  .author-card {
    padding: 1.25rem;
  }
}

/* ============================================
   RESPONSIVE — 480px
   ============================================ */
@media (max-width: 480px) {
  .blog-layout {
    padding: 16px 10px;
  }

  .blog-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .cta-section {
    padding: 1.25rem;
  }

  .author-image {
    width: 100px;
    height: 100px;
  }

  .learn-more-container {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
  .blog-sidebar,
  .mobile-nav-toggle,
  .cta-section,
  .author-social {
    display: none;
  }

  .blog-layout {
    display: block;
    padding: 0;
  }

  .blog-content {
    max-width: 100%;
  }
}

/* ============================================
   REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================
   HIGH CONTRAST
   ============================================ */
@media (prefers-contrast: high) {
  .blog-sidebar-link.active {
    outline: 2px solid #bf3425;
  }

  .learn-more-card,
  .feature-item,
  .stat-card {
    border-width: 2px;
  }
}
/* <!-- INFOGRAPHIC 1: BYPASS RATIO EVOLUTION & FAN BLADE MATERIAL PROGRESSION --> */
.bpr-wrap {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    sans-serif;
  background: #ffffff;
  border-radius: 16px;
  padding: 32px 28px 28px;
  border: 1px solid #e2e8f0;
  box-shadow: 0 4px 18px rgba(71, 87, 124, 0.08);
  max-width: 860px;
  margin: 0 auto;
  box-sizing: border-box;
}

.bpr-header {
  margin-bottom: 6px;
}

.bpr-title {
  font-size: 17px;
  font-weight: 700;
  color: #47577c;
  letter-spacing: -0.01em;
  margin: 0 0 6px;
  line-height: 1.3;
}

.bpr-subtitle {
  font-size: 13px;
  color: #9d9d9c;
  margin: 0 0 22px;
}

/* Chart area */
.bpr-chart-area {
  position: relative;
  width: 100%;
  height: 340px;
}

canvas#bprChart {
  display: block;
  width: 100% !important;
}

/* Era legend */
.bpr-era-legend {
  display: flex;
  gap: 6px;
  margin-top: 18px;
  flex-wrap: wrap;
}

.bpr-era-block {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 11.5px;
  color: #47577c;
  font-weight: 500;
  background: #f8fafc;
  border-radius: 6px;
  padding: 5px 10px;
  border: 1px solid #e2e8f0;
  cursor: default;
  transition:
    box-shadow 0.18s,
    transform 0.18s;
  opacity: 0;
  transform: translateY(10px);
}

.bpr-era-block:hover {
  box-shadow: 0 3px 10px rgba(71, 87, 124, 0.14);
  transform: translateY(-2px);
}

.bpr-era-swatch {
  width: 20px;
  height: 10px;
  border-radius: 3px;
  flex-shrink: 0;
}

.bpr-era-swatch.metal {
  background: #9d9d9c;
}
.bpr-era-swatch.early {
  background: rgba(71, 87, 124, 0.35);
}
.bpr-era-swatch.advanced {
  background: #47577c;
}

/* Note */
.bpr-note {
  margin-top: 14px;
  font-size: 11.5px;
  color: #9d9d9c;
  font-style: italic;
  text-align: right;
}

/* Tooltip override handled in JS */
/* <!-- INFOGRAPHIC 2: MANUFACTURING PROCESS CAPABILITY COMPARISON --> */
.mpc-wrap {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    sans-serif;
  background: #ffffff;
  border-radius: 16px;
  padding: 32px 28px 28px;
  border: 1px solid #e2e8f0;
  box-shadow: 0 4px 18px rgba(71, 87, 124, 0.08);
  max-width: 900px;
  margin: 0 auto;
  box-sizing: border-box;
}

.mpc-title {
  font-size: 17px;
  font-weight: 700;
  color: #47577c;
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}

.mpc-subtitle {
  font-size: 13px;
  color: #9d9d9c;
  margin: 0 0 24px;
}

/* Process header row */
.mpc-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  table-layout: fixed;
}

.mpc-table th {
  padding: 10px 10px 14px;
  font-size: 12px;
  font-weight: 700;
  text-align: center;
  color: #ffffff;
  background: #47577c;
  border-radius: 0;
  vertical-align: bottom;
  line-height: 1.35;
}

.mpc-table th:first-child {
  text-align: left;
  background: transparent;
  color: #9d9d9c;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  border-radius: 0;
}

.mpc-table th:nth-child(2) {
  border-radius: 10px 0 0 0;
}
.mpc-table th:last-child {
  border-radius: 0 10px 0 0;
}

/* AFP column highlight */
.mpc-table th.mpc-afp-head {
  background: #bf3425;
}

/* Row styles */
.mpc-table td {
  padding: 11px 10px;
  text-align: center;
  font-size: 13px;
  color: #1e293b;
  border-bottom: 1px solid #f1f5f9;
  vertical-align: middle;
  transition: background 0.18s;
}

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

.mpc-table td:first-child {
  text-align: left;
  font-size: 12.5px;
  font-weight: 600;
  color: #47577c;
  padding-left: 4px;
  line-height: 1.4;
}

/* Row hover */
.mpc-table tbody tr {
  opacity: 0;
  transform: translateX(-14px);
  transition:
    opacity 0.4s ease,
    transform 0.4s ease,
    background 0.15s;
}
.mpc-table tbody tr.mpc-visible {
  opacity: 1;
  transform: translateX(0);
}
.mpc-table tbody tr:hover td {
  background: #f8fafc;
}

/* AFP column cells */
.mpc-table td.mpc-afp-cell {
  font-weight: 700;
  color: #bf3425;
  background: rgba(191, 52, 37, 0.04);
}
.mpc-table tbody tr:hover td.mpc-afp-cell {
  background: rgba(191, 52, 37, 0.09);
}

/* Dot rating */
.mpc-dots {
  display: flex;
  gap: 3px;
  justify-content: center;
  align-items: center;
}
.mpc-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #e2e8f0;
  transition: transform 0.2s;
}
.mpc-dot.filled {
  background: #47577c;
}
.mpc-dot.filled.red {
  background: #bf3425;
}
.mpc-dot.na {
  background: transparent;
}

/* Waste bar */
.mpc-bar-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.mpc-bar-track {
  width: 70px;
  height: 8px;
  background: #f1f5f9;
  border-radius: 4px;
  overflow: hidden;
}
.mpc-bar-fill {
  height: 100%;
  border-radius: 4px;
  width: 0;
  transition: width 0.9s ease;
}
.mpc-bar-fill.navy {
  background: #47577c;
}
.mpc-bar-fill.red {
  background: #bf3425;
}
.mpc-bar-label-sm {
  font-size: 10.5px;
  color: #9d9d9c;
}

/* Text badge */
.mpc-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 6px;
  background: #f1f5f9;
  color: #47577c;
  white-space: nowrap;
}
.mpc-badge.highlight {
  background: rgba(191, 52, 37, 0.1);
  color: #bf3425;
}
.mpc-badge.neutral {
  background: #f1f5f9;
  color: #9d9d9c;
}

/* Legend */
.mpc-legend {
  display: flex;
  gap: 18px;
  margin-top: 18px;
  flex-wrap: wrap;
  align-items: center;
  font-size: 11.5px;
  color: #9d9d9c;
}
.mpc-legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
}
.mpc-legend-dots {
  display: flex;
  gap: 2px;
}
.mpc-legend-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}
/* <!-- INFOGRAPHIC 3: AFP FAN BLADE MANUFACTURING CHALLENGE TOPOLOGY --> */
.ct-wrap {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    sans-serif;
  background: #ffffff;
  border-radius: 16px;
  padding: 32px 28px 28px;
  border: 1px solid #e2e8f0;
  box-shadow: 0 4px 18px rgba(71, 87, 124, 0.08);
  max-width: 900px;
  margin: 0 auto;
  box-sizing: border-box;
}

.ct-title {
  font-size: 17px;
  font-weight: 700;
  color: #47577c;
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}

.ct-subtitle {
  font-size: 13px;
  color: #9d9d9c;
  margin: 0 0 28px;
}

/* ── Flow layout ── */
.ct-flow {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

/* ── Top node ── */
.ct-node-top {
  background: #47577c;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  padding: 13px 28px;
  border-radius: 12px;
  text-align: center;
  letter-spacing: 0.02em;
  box-shadow: 0 4px 12px rgba(71, 87, 124, 0.22);
  opacity: 0;
  transform: translateY(-12px);
  transition:
    opacity 0.45s ease,
    transform 0.45s ease;
}

/* ── Connector ── */
.ct-connector {
  width: 2px;
  background: #e2e8f0;
  position: relative;
  overflow: visible;
}
.ct-connector::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 7px solid #cbd5e1;
}

.ct-connector-v {
  height: 22px;
}
.ct-connector-short {
  height: 16px;
}

/* ── Three-column branch ── */
.ct-branch-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 14px;
  width: 100%;
}

/* Horizontal line across top of branch */
.ct-branch-line-wrap {
  width: 100%;
  position: relative;
  height: 22px;
}
.ct-branch-line-wrap::before {
  content: "";
  position: absolute;
  top: 0;
  left: calc(16.67% + 1px);
  right: calc(16.67% + 1px);
  height: 2px;
  background: #e2e8f0;
}
/* three downward stubs */
.ct-branch-line-wrap::after {
  content: "";
  display: none;
}
.ct-branch-stub {
  position: absolute;
  top: 0;
  width: 2px;
  height: 100%;
  background: #e2e8f0;
}
.ct-stub-l {
  left: calc(16.67%);
}
.ct-stub-c {
  left: calc(50% - 1px);
}
.ct-stub-r {
  right: calc(16.67%);
}

/* ── Challenge card ── */
.ct-card {
  background: #f8fafc;
  border-radius: 12px;
  border: 1.5px solid #e2e8f0;
  overflow: hidden;
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 0.45s ease,
    transform 0.45s ease,
    box-shadow 0.2s ease,
    border-color 0.2s ease;
}
.ct-card:hover {
  box-shadow: 0 6px 22px rgba(71, 87, 124, 0.14);
  border-color: #47577c;
  transform: translateY(-3px) !important;
}

.ct-card-head {
  background: #47577c;
  padding: 11px 14px;
}
.ct-card-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.65);
  text-transform: uppercase;
  margin-bottom: 2px;
}
.ct-card-name {
  font-size: 13px;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
}

.ct-card-body {
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.ct-bullet {
  display: flex;
  align-items: flex-start;
  gap: 7px;
  font-size: 12px;
  color: #334155;
  line-height: 1.45;
  opacity: 0;
  transform: translateX(-8px);
  transition:
    opacity 0.35s ease,
    transform 0.35s ease;
}
.ct-bullet-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #bf3425;
  margin-top: 5px;
  flex-shrink: 0;
}

/* ── Merge connector ── */
.ct-merge-row {
  width: 100%;
  position: relative;
  height: 22px;
}
.ct-merge-row::before {
  content: "";
  position: absolute;
  top: 100%;
  left: calc(16.67% + 1px);
  right: calc(16.67% + 1px);
  height: 2px;
  background: #e2e8f0;
}
.ct-merge-stub-l,
.ct-merge-stub-r,
.ct-merge-stub-c {
  position: absolute;
  bottom: 0;
  width: 2px;
  height: 100%;
  background: #e2e8f0;
}
.ct-merge-stub-l {
  left: calc(16.67%);
}
.ct-merge-stub-c {
  left: calc(50% - 1px);
}
.ct-merge-stub-r {
  right: calc(16.67%);
}

/* ── Bottom node ── */
.ct-node-bottom {
  background: #bf3425;
  color: #fff;
  font-size: 12.5px;
  font-weight: 700;
  padding: 13px 24px;
  border-radius: 12px;
  text-align: center;
  line-height: 1.45;
  box-shadow: 0 4px 14px rgba(191, 52, 37, 0.25);
  opacity: 0;
  transform: translateY(12px);
  transition:
    opacity 0.45s ease,
    transform 0.45s ease;
  max-width: 320px;
}
.ct-node-bottom span {
  display: block;
  font-size: 10.5px;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.75);
  margin-top: 2px;
}

/* ── Responsive ── */
@media (max-width: 640px) {
  .ct-branch-row {
    grid-template-columns: 1fr;
  }
  .ct-branch-line-wrap,
  .ct-merge-row {
    display: none;
  }
}
/* <!-- INFOGRAPHIC 4: IRDM-AFP INTEGRATED DEVELOPMENT LOOP --> */
.irdm-wrap {
  font-family:
    "Inter",
    -apple-system,
    BlinkMacSystemFont,
    sans-serif;
  background: #ffffff;
  border-radius: 16px;
  padding: 32px 28px 28px;
  border: 1px solid #e2e8f0;
  box-shadow: 0 4px 18px rgba(71, 87, 124, 0.08);
  max-width: 900px;
  margin: 0 auto;
  box-sizing: border-box;
}

.irdm-title {
  font-size: 17px;
  font-weight: 700;
  color: #47577c;
  margin: 0 0 4px;
  letter-spacing: -0.01em;
}
.irdm-subtitle {
  font-size: 13px;
  color: #9d9d9c;
  margin: 0 0 26px;
}

/* ── Domain panels ── */
.irdm-domain {
  border-radius: 14px;
  padding: 18px 20px 20px;
  margin-bottom: 0;
  position: relative;
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity 0.5s ease,
    transform 0.5s ease;
}
.irdm-domain.irdm-virtual {
  background: #f0f4fa;
  border: 1.5px solid #c7d2e8;
}
.irdm-domain.irdm-physical {
  background: #fff5f4;
  border: 1.5px solid #f0c4be;
}
.irdm-domain.irdm-data {
  background: #f8fafc;
  border: 1.5px dashed #cbd5e1;
}

.irdm-domain-label {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.irdm-virtual .irdm-domain-label {
  color: #47577c;
}
.irdm-physical .irdm-domain-label {
  color: #bf3425;
}
.irdm-data .irdm-domain-label {
  color: #9d9d9c;
}

/* ── Node cards inside domains ── */
.irdm-nodes {
  display: flex;
  align-items: flex-start;
  gap: 0;
  position: relative;
}

.irdm-node {
  flex: 1;
  background: #ffffff;
  border-radius: 10px;
  padding: 11px 13px;
  font-size: 12px;
  color: #334155;
  line-height: 1.45;
  border: 1.5px solid #e2e8f0;
  position: relative;
  opacity: 0;
  transform: translateX(-10px);
  transition:
    opacity 0.4s ease,
    transform 0.4s ease,
    box-shadow 0.2s ease,
    border-color 0.2s ease;
  min-height: 72px;
}
.irdm-node:hover {
  box-shadow: 0 4px 14px rgba(71, 87, 124, 0.13);
  border-color: #47577c;
  transform: translateY(-2px) !important;
}
.irdm-physical .irdm-node:hover {
  border-color: #bf3425;
}

.irdm-node-title {
  font-size: 11.5px;
  font-weight: 700;
  color: #47577c;
  margin-bottom: 4px;
  line-height: 1.3;
}
.irdm-physical .irdm-node-title {
  color: #bf3425;
}

/* ── Arrow connectors between nodes ── */
.irdm-arrow {
  display: flex;
  align-items: center;
  padding: 0 4px;
  flex-shrink: 0;
  margin-top: 24px;
}
.irdm-arrow svg {
  opacity: 0;
  transition: opacity 0.4s ease;
}

/* ── Vertical bridge between domains ── */
.irdm-bridge {
  display: flex;
  justify-content: flex-end;
  padding-right: calc(25% + 4px);
  position: relative;
  height: 38px;
}
.irdm-bridge-line {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}
.irdm-bridge-vline {
  width: 2px;
  height: 18px;
  background: linear-gradient(to bottom, #47577c, #bf3425);
  opacity: 0;
  transition: opacity 0.5s ease;
}
.irdm-bridge-label {
  font-size: 10px;
  font-weight: 600;
  color: #9d9d9c;
  white-space: nowrap;
  margin: 2px 0;
}
.irdm-bridge-arrow {
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 7px solid #bf3425;
  opacity: 0;
  transition: opacity 0.4s ease 0.2s;
}

/* ── Feedback bridge (measured data going down-left) ── */
.irdm-feedback {
  display: flex;
  justify-content: flex-start;
  padding-left: calc(8% + 4px);
  height: 38px;
}

/* ── Data domain content ── */
.irdm-data-body {
  font-size: 12.5px;
  color: #334155;
  line-height: 1.6;
}
.irdm-data-body strong {
  color: #47577c;
  font-weight: 700;
}
.irdm-data-arrow-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
  font-size: 12px;
  color: #bf3425;
  font-weight: 600;
}
.irdm-data-arrow-row svg {
  flex-shrink: 0;
}

/* ── Physical domain: reversed node order with RTL arrows ── */
.irdm-physical .irdm-nodes {
  flex-direction: row-reverse;
}
.irdm-physical .irdm-arrow {
  transform: scaleX(-1);
}

/* ── Responsive ── */
@media (max-width: 600px) {
  .irdm-nodes {
    flex-direction: column !important;
    gap: 8px;
  }
  .irdm-arrow {
    display: none;
  }
  .irdm-bridge {
    padding-right: 20px;
  }
}