.page-about {
  --paper-bright: #FFFDF8;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
}

.page-about .breadcrumbs {
  padding: calc(var(--topbar-offset) + 1.25rem) var(--gutter) 0;
  max-width: var(--container);
  margin-inline: auto;
}

.page-about .about-hero {
  position: relative;
  display: grid;
  gap: 2rem;
  margin-top: 1.5rem;
  padding: 2.5rem var(--gutter) 3.5rem;
  background: linear-gradient(135deg, var(--ink) 0%, var(--ink) 62%, var(--navy) 62%, var(--navy) 100%);
  color: var(--paper);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 38%;
  height: 8px;
  background: linear-gradient(90deg, var(--lime) 0 60%, var(--orange) 60% 100%);
  transform: skewX(-20deg) translateX(14%);
}

.page-about .hero-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.page-about .index-label--on-dark {
  color: var(--lime);
  border-color: rgba(255, 255, 255, 0.35);
}

.page-about .hero-channel {
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-about .hero-copy h1 {
  margin: 1.25rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 8vw, 5.5rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
  max-width: 16ch;
}

.page-about .hero-lead {
  max-width: 58ch;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  line-height: 1.7;
  color: rgba(245, 240, 232, 0.92);
}

.page-about .hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 2rem 0 0;
  padding: 1.5rem 0 0;
  border-top: 1px solid rgba(245, 240, 232, 0.25);
}

.page-about .hero-stat dt {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  color: var(--lime);
}

.page-about .hero-stat dd {
  margin: 0.25rem 0 0;
  font-size: 0.875rem;
  color: rgba(245, 240, 232, 0.8);
}

.page-about .page-chapter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin: 2.5rem var(--gutter) 0;
  max-width: var(--container);
  margin-inline: auto;
  padding: 1rem;
  border: 1px solid var(--line);
  background: var(--paper-bright);
  border-radius: 999px;
  box-shadow: var(--shadow);
}

.page-about .chapter-prefix {
  padding-left: 0.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-about .page-chapter .chapter-link {
  padding: 0.45rem 1rem;
  border-radius: 999px;
  font-size: 0.875rem;
  text-decoration: none;
  color: var(--ink);
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-about .page-chapter .chapter-link:hover,
.page-about .page-chapter .chapter-link.is-active {
  background: var(--navy);
  color: var(--paper);
}

.page-about .milestone-section,
.page-about .data-dashboard,
.page-about .cert-section,
.page-about .eco-section {
  padding: 4.5rem var(--gutter) 2rem;
  max-width: var(--container);
  margin-inline: auto;
}

.page-about .section-head {
  margin-bottom: 2rem;
}

.page-about .section-head h2 {
  margin: 0.75rem 0 0.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.page-about .section-desc {
  max-width: 60ch;
  color: var(--gray);
  font-size: 1rem;
  line-height: 1.6;
}

.page-about .timeline-layout {
  display: grid;
  gap: 2rem;
  align-items: start;
}

.page-about .timeline-img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 1rem;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.page-about .timeline-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .timeline-item {
  display: grid;
  grid-template-columns: 4.25rem 1.75rem 1fr;
  gap: 0.75rem;
  align-items: start;
}

.page-about .timeline-year {
  padding-top: 1.1rem;
  text-align: right;
  white-space: nowrap;
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--navy);
}

.page-about .timeline-rail {
  position: relative;
  display: flex;
  justify-content: center;
  align-self: stretch;
}

.page-about .timeline-rail::after {
  content: "";
  position: absolute;
  top: 1.4rem;
  bottom: -1rem;
  width: 2px;
  background: var(--line);
}

.page-about .timeline-item:last-child .timeline-rail::after {
  display: none;
}

.page-about .timeline-dot {
  position: relative;
  z-index: 1;
  display: block;
  width: 14px;
  height: 14px;
  margin-top: 1.05rem;
  border-radius: 50%;
  background: var(--lime);
  border: 3px solid var(--paper-bright);
  box-shadow: 0 0 0 1px var(--line);
}

.page-about .timeline-card {
  padding: 1.25rem 1.25rem 1.25rem 1.5rem;
  background: var(--paper-bright);
  border: 1px solid var(--line);
  border-radius: 0.875rem;
  box-shadow: var(--shadow);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .timeline-card:hover {
  transform: translateY(-4px);
  border-color: var(--navy);
}

.page-about .timeline-card h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.1rem;
  letter-spacing: -0.01em;
}

.page-about .timeline-card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--gray);
}

.page-about .timeline-card a {
  color: var(--navy);
  text-decoration: underline;
  text-decoration-color: var(--lime);
  text-underline-offset: 0.2em;
}

.page-about .data-dashboard {
  max-width: none;
  background: rgba(var(--paper-rgb), 0.6);
  border-block: 1px solid var(--line);
}

.page-about .data-dashboard .section-head,
.page-about .data-dashboard .dash-layout {
  max-width: var(--container);
  margin-inline: auto;
}

.page-about .dash-layout {
  display: grid;
  gap: 2rem;
}

.page-about .gauge-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.page-about .gauge-card {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 0.25rem 1.25rem;
  padding: 1.5rem;
  background: var(--paper-bright);
  border: 1px solid var(--line);
  border-radius: 1rem;
  box-shadow: var(--shadow);
}

.page-about .gauge {
  grid-row: span 2;
  display: block;
  width: 110px;
  height: 110px;
}

.page-about .gauge-track {
  fill: none;
  stroke: var(--line);
  stroke-width: 8;
}

.page-about .gauge-fill {
  fill: none;
  stroke-width: 8;
  stroke-linecap: round;
}

.page-about .gauge-fill--data {
  stroke: var(--lime);
  stroke-dasharray: 92 100;
}

.page-about .gauge-fill--latency {
  stroke: var(--navy);
  stroke-dasharray: 98 100;
}

.page-about .gauge-fill--leagues {
  stroke: var(--orange);
  stroke-dasharray: 100 100;
}

.page-about .gauge-fill--archive {
  stroke: var(--lime);
  stroke-dasharray: 96 100;
}

.page-about .gauge-copy {
  align-self: end;
}

.page-about .gauge-number {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.7rem;
  letter-spacing: -0.02em;
}

.page-about .gauge-name {
  margin: 0.25rem 0 0;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--gray);
}

.page-about .gauge-desc {
  grid-column: 1 / -1;
  margin: 0.5rem 0 0;
  padding-top: 0.75rem;
  border-top: 1px solid var(--line);
  font-size: 0.85rem;
  color: var(--gray);
}

.page-about .dash-side {
  display: grid;
  gap: 1rem;
  align-content: start;
}

.page-about .dash-card-image {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 1rem;
  box-shadow: var(--shadow);
}

.page-about .dash-img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .dash-stats {
  display: grid;
  gap: 0.75rem;
  margin: 0;
  padding: 1.25rem;
  background: var(--ink);
  color: var(--paper);
  border-radius: 1rem;
}

.page-about .dash-stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(245, 240, 232, 0.16);
}

.page-about .dash-stat:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .dash-stat dt {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--lime);
}

.page-about .dash-stat dd {
  margin: 0;
  font-size: 0.875rem;
  color: rgba(245, 240, 232, 0.78);
}

.page-about .dash-cta {
  justify-self: start;
  text-decoration: none;
}

.page-about .cert-section {
  padding-top: 4rem;
}

.page-about .cert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.page-about .cert-card {
  position: relative;
  overflow: hidden;
  padding: 2.25rem 1.5rem 1.75rem;
  background: var(--paper-bright);
  border: 1px solid var(--line);
  border-radius: 1rem;
  box-shadow: var(--shadow);
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-about .cert-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--navy) 0 55%, var(--lime) 55% 100%);
}

.page-about .cert-card:hover {
  transform: translateY(-4px);
  border-color: var(--navy);
}

.page-about .cert-icon {
  display: block;
  width: 42px;
  height: 42px;
  margin-bottom: 1.25rem;
  color: var(--navy);
}

.page-about .cert-card h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
}

.page-about .cert-card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--gray);
}

.page-about .eco-section {
  padding-top: 4rem;
}

.page-about .eco-layout {
  display: grid;
  gap: 2rem;
}

.page-about .eco-lead {
  max-width: 60ch;
  font-size: 1.15rem;
  line-height: 1.7;
}

.page-about .eco-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.5rem 0;
  padding: 0;
}

.page-about .eco-tags li {
  padding: 0.5rem 1rem;
  border: 1px solid var(--navy);
  border-radius: 999px;
  font-size: 0.875rem;
  color: var(--navy);
  cursor: default;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .eco-tags li:hover {
  transform: scale(1.05);
  background: var(--lime);
  border-color: var(--ink);
  color: var(--ink);
}

.page-about .eco-note {
  color: var(--gray);
  font-size: 0.95rem;
}

.page-about .eco-note a {
  color: var(--navy);
  text-decoration: underline;
  text-decoration-color: var(--orange);
  text-underline-offset: 0.2em;
}

.page-about .eco-map-wrap {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 1rem;
  box-shadow: var(--shadow);
}

.page-about .eco-map {
  display: block;
  width: 100%;
  height: auto;
}

@media (min-width: 720px) {
  .page-about .gauge-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .cert-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3rem;
    align-items: end;
    padding: 6rem var(--gutter) 6.5rem;
  }

  .page-about .hero-lead {
    margin-bottom: 1rem;
  }

  .page-about .timeline-layout {
    grid-template-columns: minmax(220px, 320px) 1fr;
    gap: 3rem;
  }

  .page-about .timeline-figure {
    position: sticky;
    top: calc(var(--topbar-offset) + 1rem);
  }

  .page-about .timeline-img {
    max-width: 320px;
  }

  .page-about .dash-layout {
    grid-template-columns: 1fr 300px;
  }

  .page-about .eco-layout {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
  }

  .page-about .eco-map-wrap {
    order: 2;
  }
}

@media (min-width: 1024px) {
  .page-about .cert-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}