.page-about {
  --about-line: rgba(74, 144, 226, 0.34);
  --about-muted: rgba(245, 247, 250, 0.66);
  --about-soft: rgba(57, 255, 20, 0.09);
  background-color: var(--space-blue);
  color: var(--paper-white);
  padding: 0 20px 72px;
  overflow-x: clip;
}

.page-about .about-header {
  position: relative;
  padding: 30px 0 26px;
  border-bottom: 1px solid var(--about-line);
  background-image:
    linear-gradient(rgba(74, 144, 226, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74, 144, 226, 0.06) 1px, transparent 1px);
  background-size: 28px 28px;
}

.page-about .about-header::after {
  content: "";
  display: block;
  height: 4px;
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  background: linear-gradient(90deg, var(--energy-orange) 0 68px, transparent 68px 96px, var(--neon-green) 96px 168px, transparent 168px);
  clip-path: polygon(0 0, 100% 0, calc(100% - 44px) 100%, 0 100%);
  opacity: 0.9;
}

.page-about .about-header-inner {
  position: relative;
  max-width: var(--content-max);
  margin: 0 auto;
}

.page-about .about-header-coord {
  display: none;
}

.page-about .breadcrumbs {
  margin: 0;
  font-family: var(--font-data);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--about-muted);
}

.page-about .breadcrumbs a {
  color: var(--line-blue);
  text-decoration: none;
  transition: color 0.3s;
}

.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  color: var(--neon-green);
}

.page-about .about-edition {
  display: inline-block;
  margin: 24px 0 0;
  padding: 4px 10px;
  border: 1px solid rgba(255, 107, 0, 0.35);
  background: rgba(255, 107, 0, 0.08);
  font-family: var(--font-data);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--energy-orange);
}

.page-about h1 {
  max-width: 680px;
  margin: 16px 0;
  font-family: var(--font-head);
  font-size: 2rem;
  line-height: 1.18;
  font-weight: 900;
  letter-spacing: 0.01em;
}

.page-about .about-lede {
  max-width: 660px;
  margin: 0;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--about-muted);
}

.page-about .about-shell {
  max-width: var(--content-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding-top: 30px;
}

.page-about .about-rail-sticky {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-about .about-cityscape {
  display: block;
  position: relative;
  width: 100%;
  aspect-ratio: 21 / 9;
  overflow: hidden;
  margin: 0;
  border: 1px solid rgba(74, 144, 226, 0.45);
  background: var(--midnight-navy);
}

.page-about .about-cityscape img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-index {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 14px 0;
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-index a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 10px;
  border: 1px solid rgba(74, 144, 226, 0.24);
  background: rgba(18, 41, 62, 0.5);
  font-size: 0.84rem;
  color: var(--paper-white);
  text-decoration: none;
  transition: border-color 0.3s, background 0.3s, color 0.3s;
}

.page-about .about-index a span {
  font-family: var(--font-data);
  font-size: 0.7rem;
  color: var(--energy-orange);
}

.page-about .about-index a:hover,
.page-about .about-index a:focus-visible {
  border-color: var(--neon-green);
  background: var(--about-soft);
  color: var(--neon-green);
}

.page-about .about-rail-coord {
  padding-left: 10px;
  border-left: 2px solid var(--energy-orange);
  font-family: var(--font-data);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--about-muted);
}

.page-about .about-main {
  min-width: 0;
  display: grid;
  gap: 0;
}

.page-about .about-section {
  position: relative;
  scroll-margin-top: 18px;
  padding: 30px 0;
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-section:last-of-type {
  border-bottom: 0;
}

.page-about .about-section-head {
  display: grid;
  gap: 4px;
  margin-bottom: 24px;
}

.page-about .about-section-head::after {
  content: "";
  width: 52px;
  height: 2px;
  margin-top: 10px;
  background: linear-gradient(90deg, var(--neon-green), rgba(57, 255, 20, 0));
}

.page-about .about-kicker {
  font-family: var(--font-data);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--energy-orange);
}

.page-about .about-section-head h2 {
  margin: 0;
  font-family: var(--font-head);
  font-size: 1.45rem;
  font-weight: 900;
  letter-spacing: 0.01em;
}

.page-about .about-mission {
  margin: 0 0 24px;
  padding-left: 16px;
  border-left: 3px solid var(--neon-green);
  font-family: var(--font-head);
  font-size: 1.3rem;
  line-height: 1.5;
  font-weight: 700;
}

.page-about .about-principles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 0 0 22px;
}

.page-about .about-principle {
  position: relative;
  overflow: hidden;
  padding: 18px 16px 16px;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-small);
  background: linear-gradient(160deg, var(--midnight-navy), rgba(18, 41, 62, 0.45));
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease);
}

.page-about .about-principle::after {
  content: "";
  position: absolute;
  right: -18px;
  top: -18px;
  width: 52px;
  height: 52px;
  border: 1px solid rgba(74, 144, 226, 0.18);
  border-radius: 50%;
}

.page-about .about-principle:hover {
  transform: translateY(-3px);
  border-color: rgba(57, 255, 20, 0.5);
}

.page-about .principle-num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-data);
  font-size: 0.8rem;
  color: var(--energy-orange);
}

.page-about .about-principle h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 1.05rem;
}

.page-about .about-principle p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--about-muted);
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin: 0;
  border: 1px solid var(--about-line);
  background: var(--about-line);
}

.page-about .fact-cell {
  padding: 14px 12px;
  background: var(--space-blue);
}

.page-about .about-facts dt {
  margin-bottom: 4px;
  font-family: var(--font-data);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--about-muted);
}

.page-about .about-facts dd {
  margin: 0;
  font-family: var(--font-data);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--neon-green);
}

.page-about .about-chart {
  display: block;
  margin: 0 0 26px;
  overflow: hidden;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-small);
  background: var(--midnight-navy);
}

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

.page-about .about-timeline {
  position: relative;
  display: grid;
  margin: 0;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--line-blue), rgba(74, 144, 226, 0.12));
}

.page-about .timeline-item {
  position: relative;
  padding: 0 0 22px 30px;
}

.page-about .timeline-item:last-child {
  padding-bottom: 0;
}

.page-about .timeline-marker {
  position: absolute;
  left: 3px;
  top: 5px;
  width: 12px;
  height: 12px;
  border: 2px solid var(--line-blue);
  border-radius: 50%;
  background: var(--space-blue);
  box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.14);
}

.page-about .timeline-item.is-current .timeline-marker {
  border-color: var(--neon-green);
  background: var(--neon-green);
  box-shadow: 0 0 0 4px rgba(57, 255, 20, 0.18);
}

.page-about .timeline-card {
  padding: 16px 14px;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-small);
  background: rgba(18, 41, 62, 0.58);
  transition: border-color 0.3s, background 0.3s, transform 0.3s var(--ease);
}

.page-about .timeline-item:hover .timeline-card,
.page-about .timeline-item:focus-within .timeline-card,
.page-about .timeline-item.is-current .timeline-card {
  border-color: rgba(57, 255, 20, 0.45);
  background: var(--midnight-navy);
}

.page-about .timeline-stage {
  display: inline-block;
  padding: 3px 7px;
  background: rgba(255, 107, 0, 0.1);
  font-family: var(--font-data);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--energy-orange);
}

.page-about .timeline-card h3 {
  margin: 10px 0 6px;
  font-family: var(--font-head);
  font-size: 1.05rem;
}

.page-about .timeline-card p {
  margin: 0 0 10px;
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--about-muted);
}

.page-about .timeline-data {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 12px;
}

.page-about .timeline-data-item {
  padding: 4px 8px;
  border: 1px solid rgba(57, 255, 20, 0.3);
  background: var(--about-soft);
  font-family: var(--font-data);
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--neon-green);
}

.page-about .timeline-coord {
  display: block;
  padding-left: 8px;
  border-left: 1px solid var(--about-line);
  font-family: var(--font-data);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
  color: rgba(74, 144, 226, 0.72);
}

.page-about .about-intro {
  margin: 0 0 20px;
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--about-muted);
}

.page-about .about-team-figure {
  display: block;
  margin: 0 0 22px;
  overflow: hidden;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-small);
  background: var(--midnight-navy);
}

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

.page-about .about-team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 0 0 28px;
}

.page-about .team-group {
  position: relative;
  display: grid;
  gap: 6px;
  padding: 18px 16px 14px;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-small);
  background: linear-gradient(180deg, var(--midnight-navy), rgba(18, 41, 62, 0.4));
  transition: transform 0.3s var(--ease), border-color 0.3s;
}

.page-about .team-group:hover,
.page-about .team-group:focus-within {
  transform: translateY(-2px);
  border-color: rgba(57, 255, 20, 0.5);
}

.page-about .team-group:focus-visible,
.page-about .cert-item:focus-visible,
.page-about .about-index a:focus-visible {
  outline: 2px solid var(--neon-green);
  outline-offset: 2px;
}

.page-about .team-icon {
  line-height: 0;
  color: var(--neon-green);
}

.page-about .team-group:nth-child(2) .team-icon {
  color: var(--energy-orange);
}

.page-about .team-group:nth-child(3) .team-icon {
  color: var(--line-blue);
}

.page-about .team-count {
  margin: 4px 0 0;
  font-family: var(--font-data);
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--paper-white);
}

.page-about .team-group h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: 0.98rem;
}

.page-about .team-desc {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--about-muted);
}

.page-about .team-code {
  margin-top: 4px;
  font-family: var(--font-data);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  color: rgba(74, 144, 226, 0.65);
}

.page-about .about-subhead {
  display: grid;
  gap: 4px;
  margin: 0 0 14px;
}

.page-about .about-subhead-kicker {
  font-family: var(--font-data);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--energy-orange);
}

.page-about .about-subhead h3 {
  margin: 0;
  font-family: var(--font-head);
  font-size: 1.15rem;
}

.page-about .about-cert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .cert-item {
  display: grid;
  gap: 14px;
  padding: 18px;
  border: 1px solid var(--about-line);
  background: rgba(11, 27, 43, 0.72);
  transition: border-color 0.3s, background 0.3s;
}

.page-about .cert-item:hover,
.page-about .cert-item:focus-within {
  border-color: rgba(57, 255, 20, 0.5);
  background: rgba(18, 41, 62, 0.5);
}

.page-about .cert-badge {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-about .cert-shield {
  display: inline-flex;
  line-height: 0;
  color: var(--neon-green);
}

.page-about .cert-item:nth-child(2) .cert-shield {
  color: var(--energy-orange);
}

.page-about .cert-name {
  font-family: var(--font-head);
  font-size: 0.98rem;
  line-height: 1.35;
  font-weight: 700;
}

.page-about .cert-desc {
  margin: 0;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--about-muted);
}

.page-about .about-ecosystem {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .eco-card {
  position: relative;
  overflow: hidden;
  padding: 18px 16px 14px;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-small);
  background: linear-gradient(150deg, rgba(18, 41, 62, 0.8), rgba(18, 41, 62, 0.28));
}

.page-about .eco-card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-green), transparent 70%);
  opacity: 0.6;
}

.page-about .eco-index {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-data);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  color: var(--energy-orange);
}

.page-about .eco-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 1rem;
}

.page-about .eco-card p {
  margin: 0 0 10px;
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--about-muted);
}

.page-about .eco-coord {
  display: inline-block;
  padding-left: 8px;
  border-left: 1px solid var(--about-line);
  font-family: var(--font-data);
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  color: rgba(74, 144, 226, 0.7);
}

.page-about .about-next {
  position: relative;
  overflow: hidden;
  margin-top: 34px;
  padding: 24px 18px;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-small);
  background: linear-gradient(120deg, rgba(255, 107, 0, 0.12), rgba(57, 255, 20, 0.06)), var(--midnight-navy);
}

.page-about .about-next-kicker {
  margin: 0 0 8px;
  font-family: var(--font-data);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--energy-orange);
}

.page-about .about-next h2 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 1.4rem;
}

.page-about .about-next > p:not(.about-next-kicker) {
  margin: 0 0 18px;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--about-muted);
}

.page-about .about-next-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (min-width: 700px) {
  .page-about .about-mission {
    font-size: 1.7rem;
  }

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

  .page-about .about-facts {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .fact-cell {
    padding: 16px 14px;
  }

  .page-about .timeline-item {
    padding-left: 40px;
  }

  .page-about .timeline-card {
    padding: 20px 18px;
  }

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

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

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

@media (min-width: 800px) {
  .page-about .about-header {
    padding-top: 44px;
    padding-bottom: 36px;
  }

  .page-about h1 {
    font-size: 3.2rem;
  }

  .page-about .about-lede {
    font-size: 1.1rem;
  }

  .page-about .about-section {
    padding: 40px 0;
  }

  .page-about .about-next {
    padding: 32px 28px;
  }
}

@media (min-width: 1080px) {
  .page-about .about-header-coord {
    display: block;
    position: absolute;
    top: 8px;
    right: 0;
    padding-right: 8px;
    border-right: 1px solid rgba(74, 144, 226, 0.3);
    font-family: var(--font-data);
    font-size: 0.7rem;
    letter-spacing: 0.22em;
    color: rgba(74, 144, 226, 0.55);
    writing-mode: vertical-rl;
  }

  .page-about .about-shell {
    grid-template-columns: minmax(0, 300px) minmax(0, 760px);
    justify-content: center;
    gap: 48px;
    padding-top: 48px;
  }

  .page-about .about-rail-sticky {
    position: sticky;
    top: 28px;
  }

  .page-about .about-cityscape {
    aspect-ratio: 1 / 2;
  }

  .page-about .about-index {
    flex-direction: column;
    gap: 0;
    padding: 0;
    border: 0;
  }

  .page-about .about-index a {
    justify-content: space-between;
    padding: 12px 4px;
    border: 0;
    border-bottom: 1px solid var(--about-line);
    border-radius: 0;
    background: transparent;
  }
}