.page-about {
  background: var(--ink);
  color: var(--body-on-dark);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about .breadcrumbs {
  padding: 24px 0 8px;
  color: var(--body-on-dark);
}

.page-about .breadcrumbs a {
  color: var(--gold);
  text-underline-offset: 4px;
  text-decoration-color: rgba(212, 175, 55, 0.4);
}

.page-about .breadcrumbs__current {
  color: var(--body-on-dark);
}

.page-about__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding: 16px 0 72px;
}

.page-about__rail-inner {
  border-left: 4px solid var(--gold);
  padding: 8px 0 8px 18px;
}

.page-about__rail-kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about__rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about__rail-list li {
  margin: 0;
}

.page-about__rail-list a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 10px;
  font-size: 14px;
  font-weight: 600;
  color: var(--body-on-dark);
  text-decoration: none;
  border: 1px solid rgba(212, 175, 55, 0.35);
  background: rgba(10, 25, 48, 0.55);
}

.page-about__rail-list a span {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gold);
}

.page-about__rail-note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about__hero {
  padding: 16px 0 32px;
}

.page-about__hero .section-label {
  color: var(--gold);
}

.page-about__hero h1 {
  margin: 14px 0 18px;
  font-family: var(--font-heading);
  font-size: clamp(30px, 5.5vw, 58px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about__h1-divider {
  margin: 0 0.16em;
  font-weight: 400;
  color: var(--gold);
}

.page-about__h1-sub {
  color: var(--gold);
}

.page-about__lead {
  max-width: 62ch;
  margin: 0;
  font-size: clamp(16px, 1.4vw, 20px);
  line-height: 1.75;
  color: var(--body-on-dark);
}

.page-about__intro-card.frame {
  margin-top: 28px;
  padding: 22px;
  background: var(--paper);
  color: var(--body-on-light);
  border: 2px solid var(--ink);
  box-shadow: 10px 10px 0 var(--gold), 0 0 32px var(--glow-overlay);
}

.page-about__intro-kicker {
  display: inline-block;
  margin: 0 0 12px;
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--gold);
  background: var(--ink);
}

.page-about__intro-text {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
}

.page-about__intro-text strong {
  font-weight: 800;
  color: var(--ink);
}

.page-about__section {
  margin: 0 0 34px;
  padding: clamp(22px, 4vw, 44px);
  background: var(--paper);
  color: var(--body-on-light);
  border: 2px solid var(--ink);
  box-shadow: 8px 8px 0 rgba(212, 175, 55, 0.65);
}

.page-about__section-heading {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--ink);
}

.page-about__section-heading .section-label {
  padding: 3px 7px;
  font-size: 12px;
  color: var(--gold);
  background: var(--ink);
}

.page-about__section-heading h2 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about__statement-grid p {
  margin: 0 0 18px;
  font-size: clamp(15px, 1.1vw, 17px);
  line-height: 1.8;
}

.page-about__statement-grid p:last-of-type {
  margin-bottom: 24px;
}

.page-about__statement-list {
  list-style: none;
  margin: 0;
  padding: 16px 0 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  border-top: 1px solid rgba(10, 25, 48, 0.2);
}

.page-about__statement-list li {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
  line-height: 1.6;
}

.page-about__statement-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 10px;
  height: 10px;
  background: var(--gold);
  border: 2px solid var(--ink);
}

.page-about__milestone-cover {
  margin: 0 0 26px;
  background: var(--ink);
  border: 2px solid var(--ink);
  box-shadow: 6px 6px 0 rgba(10, 25, 48, 0.15);
}

.page-about__milestone-cover img,
.page-about__quality-figure img,
.page-about__ecosystem-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

.page-about__milestone-cover figcaption {
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--body-on-dark);
}

.page-about__timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about__timeline::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 20px;
  bottom: 20px;
  width: 2px;
  background: var(--ink);
  opacity: 0.18;
}

.page-about__milestone {
  position: relative;
  padding-left: 52px;
  margin-bottom: 22px;
}

.page-about__milestone::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 22px;
  width: 18px;
  height: 18px;
  background: var(--gold);
  border: 3px solid var(--ink);
  box-shadow: 0 0 0 2px var(--gold);
}

.page-about__milestone-year {
  margin: 0 0 10px;
  font-family: var(--font-heading);
  font-size: clamp(30px, 5vw, 46px);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.page-about__milestone-detail {
  background: rgba(10, 25, 48, 0.03);
  border: 2px solid var(--ink);
}

.page-about__milestone-detail[open] {
  box-shadow: 4px 4px 0 rgba(10, 25, 48, 0.12);
}

.page-about__milestone-detail summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
}

.page-about__milestone-detail summary::-webkit-details-marker {
  display: none;
}

.page-about__milestone-tag {
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
  background: var(--ink);
}

.page-about__milestone-title {
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--ink);
}

.page-about__milestone-detail p {
  margin: 0;
  padding: 12px 14px 14px;
  border-top: 1px dashed rgba(10, 25, 48, 0.25);
  font-size: 15px;
  line-height: 1.7;
}

.page-about__quality-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
}

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

.page-about__cert {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 4px 16px;
  align-items: start;
  padding: 16px;
  background: rgba(244, 239, 230, 0.75);
  border: 2px solid var(--ink);
}

.page-about__cert-mark {
  grid-row: span 2;
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 800;
  color: var(--ink);
  border: 2px solid var(--ink);
  background: repeating-linear-gradient(45deg, transparent 0 4px, rgba(10, 25, 48, 0.08) 4px 8px);
}

.page-about__cert h3 {
  grid-column: 2;
  margin: 0;
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 800;
  color: var(--ink);
}

.page-about__cert p {
  grid-column: 2;
  margin: 4px 0 0;
  font-size: 14px;
  line-height: 1.7;
}

.page-about__quality-figure {
  margin: 0;
  background: var(--ink);
  border: 2px solid var(--ink);
  box-shadow: 6px 6px 0 var(--gold);
}

.page-about__ecosystem-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  align-items: start;
}

.page-about__ecosystem-copy > p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.8;
}

.page-about__ecosystem-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-about__ecosystem-list li {
  padding: 12px 14px;
  font-size: 15px;
  line-height: 1.6;
  background: rgba(10, 25, 48, 0.04);
  border-left: 4px solid var(--gold);
}

.page-about__ecosystem-list span {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--ink);
}

.page-about__ecosystem-figure {
  margin: 0;
  background: var(--ink);
  border: 2px solid var(--ink);
  box-shadow: 6px 6px 0 var(--gold);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.page-about__ecosystem-figure:hover {
  transform: translate(2px, 2px);
  box-shadow: 3px 3px 0 var(--gold);
}

.page-about__network {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 18px;
  background: var(--ink);
  border: 2px solid var(--ink);
}

.page-about__network-line {
  stroke: var(--gold);
  stroke-width: 1.5;
  opacity: 0.55;
}

.page-about__node {
  fill: var(--paper);
  stroke: var(--gold);
  stroke-width: 3;
  transition: fill 0.2s ease, stroke 0.2s ease;
}

.page-about__network-nodes:hover .page-about__node {
  fill: var(--orange);
  stroke: var(--orange);
}

.page-about__inner-index {
  margin: 44px 0 8px;
  padding: 24px;
  background: rgba(10, 25, 48, 0.4);
  border: 1px solid rgba(212, 175, 55, 0.35);
}

.page-about__inner-index-title {
  margin: 0 0 14px;
  font-family: var(--font-heading);
  font-weight: 800;
  color: var(--gold);
}

.page-about__inner-index-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about__inner-index-links .btn {
  text-decoration: none;
}

.page-about__rail-list a:focus-visible,
.page-about__milestone-detail summary:focus-visible,
.page-about__inner-index-links .btn:focus-visible {
  outline: 1px solid var(--border-focus);
  outline-offset: 4px;
}

@media (min-width: 640px) {
  .page-about__statement-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
  }

  .page-about__statement-grid p:first-child {
    grid-column: 1 / -1;
  }

  .page-about__statement-list {
    grid-column: 1 / -1;
    grid-template-columns: 1fr 1fr;
  }

  .page-about__quality-list {
    grid-template-columns: 1fr 1fr;
  }

  .page-about__cert:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 880px) {
  .page-about__grid {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-about__rail {
    position: sticky;
    top: calc(var(--header-height) + 28px);
    align-self: start;
  }

  .page-about__rail-list {
    display: block;
  }

  .page-about__rail-list li + li {
    margin-top: 0;
  }

  .page-about__rail-list a {
    display: flex;
    justify-content: space-between;
    width: 100%;
    padding: 11px 2px;
    background: transparent;
    border: 0;
    border-bottom: 1px solid rgba(212, 175, 55, 0.2);
  }

  .page-about__hero {
    padding-top: 12px;
  }

  .page-about__quality-layout {
    grid-template-columns: minmax(0, 1.2fr) minmax(260px, 0.8fr);
  }

  .page-about__quality-list {
    grid-template-columns: 1fr;
  }

  .page-about__cert:last-child {
    grid-column: auto;
  }

  .page-about__ecosystem-layout {
    grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  }
}