.page-about {
  --about-grid-line: rgba(160, 170, 191, 0.08);
  --cert-card-bg: rgba(26, 35, 50, 0.85);
  background: var(--bg);
  color: var(--white);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: clip;
}

.page-about .shell {
  max-width: 1240px;
  margin-inline: auto;
  padding-inline: 20px;
  position: relative;
}

.page-about .about-hero {
  position: relative;
  padding-top: 56px;
  padding-bottom: 34px;
  background:
    linear-gradient(var(--about-grid-line) 1px, transparent 1px) 0 0 / 100% 44px,
    linear-gradient(90deg, var(--about-grid-line) 1px, transparent 1px) 0 0 / 44px 100%,
    radial-gradient(circle at 90% 8%, rgba(0, 212, 255, 0.16), transparent 38%),
    var(--bg);
}

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-size: 12px;
  color: var(--muted);
}

.page-about .breadcrumb a {
  color: var(--blue);
  text-decoration: none;
}

.page-about .breadcrumb a:hover {
  text-decoration: underline;
}

.page-about .breadcrumb-sep {
  opacity: 0.5;
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 36px;
}

.page-about .kicker {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue);
}

.page-about h1 {
  margin: 12px 0 22px;
  font-family: var(--font-headline);
  font-size: clamp(34px, 6vw, 76px);
  line-height: 0.98;
  letter-spacing: 0.01em;
  max-width: 11em;
}

.page-about .about-hero-copy .lead {
  margin: 0;
  max-width: 620px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

.page-about .about-hero-note {
  align-self: end;
  border-left: 2px solid var(--yellow);
  padding-left: 18px;
}

.page-about .hero-num {
  display: block;
  font-family: var(--font-headline);
  font-size: clamp(46px, 7vw, 78px);
  line-height: 1;
  color: var(--yellow);
}

.page-about .about-hero-note p {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.page-about .about-anchor-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
  padding-top: 20px;
  border-top: 1px solid rgba(160, 170, 191, 0.18);
}

.page-about .about-anchor-nav a {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid rgba(0, 212, 255, 0.42);
  border-radius: 999px;
  color: var(--blue);
  font-size: 13px;
  line-height: 1.5;
  text-decoration: none;
  transition: border-color 0.25s ease, background-color 0.25s ease;
}

.page-about .about-anchor-nav a:hover {
  background-color: rgba(0, 212, 255, 0.12);
  border-color: var(--blue);
}

.page-about .about-origin {
  position: relative;
  padding-top: 48px;
  padding-bottom: 24px;
}

.page-about .origin-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-about .about-origin-left {
  position: relative;
  padding-left: 18px;
}

.page-about .about-origin-left::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 5px;
  border-radius: 999px;
  background: linear-gradient(to bottom, var(--blue), var(--yellow));
}

.page-about .about-origin-left .kicker {
  color: var(--muted);
}

.page-about .origin-claim {
  margin: 14px 0 0;
  font-family: var(--font-headline);
  font-size: clamp(40px, 6vw, 80px);
  line-height: 1.02;
  letter-spacing: -0.01em;
  max-width: 7em;
}

.page-about .about-origin-right {
  min-width: 0;
}

.page-about .about-origin-right .text-block p {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}

.page-about .about-origin-image {
  margin: 28px 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(160, 170, 191, 0.16);
}

.page-about .about-origin-image img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-about .about-origin-image figcaption {
  padding: 12px 14px;
  background: var(--bg-raised);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.page-about .speedline--about {
  height: 64px;
  background: linear-gradient(100deg, rgba(107, 33, 255, 0.55) 0%, rgba(0, 212, 255, 0.4) 42%, rgba(242, 255, 0, 0.3) 78%, transparent 100%);
  clip-path: polygon(0 48%, 100% 26%, 100% 56%, 0 78%);
  opacity: 0.6;
}

.page-about .about-history {
  padding-top: 48px;
  padding-bottom: 34px;
  background: linear-gradient(180deg, var(--bg) 0%, rgba(26, 35, 50, 0.35) 100%);
}

.page-about .history-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 38px;
}

.page-about .history-side .section-title,
.page-about .certs-main .section-title,
.page-about .team-copy .section-title {
  margin-top: 10px;
  margin-bottom: 18px;
  font-family: var(--font-headline);
  font-size: clamp(26px, 4.4vw, 44px);
  line-height: 1.1;
}

.page-about .history-side .text-block p,
.page-about .team-copy .text-block p {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .history-fast-stat {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid rgba(160, 170, 191, 0.18);
}

.page-about .fast-num {
  font-family: var(--font-body);
  font-size: clamp(46px, 5vw, 68px);
  font-weight: 800;
  line-height: 1;
  color: var(--blue);
}

.page-about .history-fast-stat span:last-child {
  color: var(--muted);
  font-size: 14px;
}

.page-about .history-timeline {
  min-width: 0;
}

.page-about .timeline-caption {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-about .about-timeline {
  position: relative;
}

.page-about .timeline-line {
  position: absolute;
  left: 9px;
  top: 10px;
  bottom: 36px;
  width: 2px;
  background: linear-gradient(to bottom, var(--blue) 0%, var(--yellow) 60%, var(--red) 100%);
  opacity: 0.75;
}

.page-about .timeline-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .timeline-item {
  position: relative;
  margin-bottom: 22px;
  padding-left: 40px;
}

.page-about .timeline-dot {
  position: absolute;
  left: 2px;
  top: 8px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-raised);
  border: 3px solid var(--blue);
  box-shadow: 0 0 0 4px rgba(0, 212, 255, 0.14);
}

.page-about .timeline-card {
  background: var(--bg-raised);
  border: 1px solid rgba(160, 170, 191, 0.14);
  border-radius: var(--radius-lg);
  padding: 18px 18px 16px;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.page-about .timeline-card:hover {
  border-color: rgba(0, 212, 255, 0.7);
  transform: translateX(4px);
}

.page-about .timeline-year {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--yellow);
}

.page-about .timeline-card h3 {
  margin: 0 0 8px;
  font-size: 18px;
  line-height: 1.4;
}

.page-about .timeline-card p:last-child {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.page-about .about-certs {
  padding-top: 52px;
  padding-bottom: 42px;
  background: radial-gradient(circle at -10% 100%, rgba(107, 33, 255, 0.22), transparent 42%), var(--bg);
}

.page-about .certs-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.page-about .cert-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.page-about .cert-filter .chip-filter {
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.4;
  padding: 8px 16px;
  background: var(--bg-raised);
  color: var(--white);
  border: 1px solid rgba(160, 170, 191, 0.28);
  border-radius: 999px;
  cursor: pointer;
  transition: border-color 0.25s ease, background-color 0.25s ease, color 0.25s ease;
}

.page-about .cert-filter .chip-filter:hover,
.page-about .cert-filter .chip-filter[data-open] {
  border-color: var(--blue);
  background-color: rgba(0, 212, 255, 0.12);
  color: var(--blue);
}

.page-about .about-cert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .cert-card {
  background: var(--cert-card-bg);
  border: 1px solid rgba(160, 170, 191, 0.14);
  border-radius: var(--radius-lg);
  padding: 24px 22px 20px;
  transition: transform 0.25s ease, border-color 0.25s ease, background-color 0.25s ease;
}

.page-about .cert-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 212, 255, 0.55);
  background-color: var(--bg-raised);
}

.page-about .cert-icon {
  width: 56px;
  height: 56px;
  margin-bottom: 16px;
  display: grid;
  place-items: center;
  background: rgba(0, 212, 255, 0.1);
  border-radius: 16px;
}

.page-about .cert-card h3 {
  margin: 0 0 8px;
  font-size: 16px;
  line-height: 1.45;
}

.page-about .cert-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.page-about .about-cert-image {
  margin: 0;
  max-width: 420px;
  align-self: start;
}

.page-about .about-cert-image img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 32px;
  border: 1px solid rgba(0, 212, 255, 0.32);
}

.page-about .about-cert-image figcaption {
  padding: 12px 4px 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.page-about .about-team {
  padding-top: 52px;
  padding-bottom: 64px;
  background: linear-gradient(180deg, var(--bg) 0%, rgba(26, 35, 50, 0.35) 100%);
}

.page-about .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-about .stats-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 28px;
}

.page-about .stats-strip .data-cell {
  background: var(--bg-raised);
  border: 1px solid rgba(160, 170, 191, 0.16);
  border-radius: var(--radius-md);
  padding: 16px 12px;
}

.page-about .stats-strip .data-value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(22px, 4vw, 30px);
  color: var(--yellow);
  letter-spacing: 0.02em;
}

.page-about .stats-strip .data-label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  color: var(--muted);
}

.page-about .about-team-image {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(160, 170, 191, 0.16);
}

.page-about .about-team-image img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-team-image figcaption {
  padding: 12px 14px;
  background: var(--bg-raised);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.page-about .about-ecosystem {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 44px;
}

.page-about .eco-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  background: var(--bg-raised);
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--blue);
}

.page-about .eco-num {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--yellow);
  letter-spacing: 0.1em;
}

.page-about .eco-item p {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
}

.page-about .eco-item div span {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.page-about .about-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  margin-top: 44px;
  padding-top: 30px;
  border-top: 1px solid rgba(160, 170, 191, 0.18);
}

.page-about .about-cta-row p {
  width: 100%;
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 14px;
}

.page-about .about-cta-row .button {
  text-decoration: none;
}

@media (min-width: 600px) {
  .page-about .about-cta-row p {
    width: auto;
    margin-right: 12px;
  }
}

@media (min-width: 860px) {
  .page-about .about-hero {
    padding-top: 88px;
    padding-bottom: 48px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: end;
    margin-top: 48px;
  }

  .page-about .about-anchor-nav {
    margin-top: 36px;
  }

  .page-about .origin-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 52px;
  }

  .page-about .about-origin {
    padding-top: 72px;
    padding-bottom: 40px;
  }

  .page-about .about-origin-left {
    padding-left: 24px;
  }

  .page-about .origin-claim {
    font-size: clamp(48px, 6vw, 88px);
  }

  .page-about .about-history {
    padding-top: 72px;
    padding-bottom: 52px;
  }

  .page-about .history-layout {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    gap: 60px;
  }

  .page-about .history-side .section-title,
  .page-about .certs-main .section-title,
  .page-about .team-copy .section-title {
    font-size: clamp(28px, 4.2vw, 48px);
  }

  .page-about .timeline-line {
    left: 11px;
  }

  .page-about .timeline-item {
    padding-left: 48px;
  }

  .page-about .timeline-dot {
    left: 4px;
  }

  .page-about .certs-layout {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-cert-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .page-about .about-team {
    padding-top: 72px;
    padding-bottom: 80px;
  }

  .page-about .team-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .about-ecosystem {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}