.page-about {
  --about-rail-w: 236px;
  --about-content-max: 860px;
  --about-gold-line: rgba(212, 165, 58, 0.55);
  background: var(--c-primary);
}

.page-about .breadcrumb {
  max-width: var(--container);
  margin: 0 auto;
  padding: 16px 20px 0;
}

.page-about .breadcrumb a {
  color: rgba(255, 255, 255, 0.72);
}

.page-about .breadcrumb li[aria-current="page"] {
  color: var(--c-gold);
}

.page-about .about-hero {
  position: relative;
  padding: 40px 20px 56px;
  overflow: hidden;
  background:
    radial-gradient(circle at 82% 20%, rgba(212, 165, 58, 0.2), transparent 34%),
    radial-gradient(circle at 8% 90%, rgba(46, 139, 87, 0.18), transparent 42%),
    var(--c-primary);
}

.page-about .about-hero__curve {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 160px;
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  gap: 24px;
  align-items: end;
}

.page-about .about-hero__corner {
  position: absolute;
  width: 28px;
  height: 28px;
  border-color: var(--c-gold);
  border-style: solid;
  opacity: 0.7;
  pointer-events: none;
  z-index: 2;
}

.page-about .about-hero__corner--tl {
  top: 14px;
  left: 14px;
  border-width: 2px 0 0 2px;
  border-radius: 10px 0 0 0;
}

.page-about .about-hero__corner--tr {
  top: 14px;
  right: 14px;
  border-width: 2px 2px 0 0;
  border-radius: 0 10px 0 0;
}

.page-about .about-hero__corner--bl {
  bottom: 14px;
  left: 14px;
  border-width: 0 0 2px 2px;
  border-radius: 0 0 0 10px;
}

.page-about .about-hero__corner--br {
  bottom: 14px;
  right: 14px;
  border-width: 0 2px 2px 0;
  border-radius: 0 0 10px 0;
}

.page-about .about-hero__kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 12px;
  font-family: var(--f-head);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.page-about .about-hero__kicker-line {
  width: 54px;
  height: 1px;
  background: var(--about-gold-line);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--f-head);
  font-size: clamp(32px, 5vw, 60px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--c-white);
  max-width: 14em;
}

.page-about .about-hero__lead {
  max-width: 58ch;
  margin: 16px 0 0;
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.8);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-about .about-hero__brand {
  font-family: var(--f-head);
  font-size: clamp(60px, 13vw, 170px);
  font-weight: 900;
  letter-spacing: -0.05em;
  line-height: 0.78;
  color: rgba(212, 165, 58, 0.5);
  white-space: nowrap;
  text-align: left;
  user-select: none;
}

.page-about .about-layout {
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  gap: 0;
}

.page-about .about-rail {
  background: var(--c-primary);
  color: var(--c-white);
  padding: 24px 20px 20px;
  border-top: 1px solid rgba(212, 165, 58, 0.18);
  border-bottom: 1px solid rgba(212, 165, 58, 0.18);
}

.page-about .about-rail__title {
  margin: 0 0 16px;
  font-family: var(--f-head);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.page-about .about-rail__timeline {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .about-rail__timeline::-webkit-scrollbar {
  display: none;
}

.page-about .about-rail__item {
  flex: 0 0 auto;
}

.page-about .about-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.04);
  font-family: var(--f-head);
  font-size: 14px;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  transition: border-color var(--speed) var(--ease), background-color var(--speed) var(--ease), color var(--speed) var(--ease);
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link.is-spied {
  border-color: var(--c-gold);
  background: var(--c-gold);
  color: var(--c-primary);
}

.page-about .about-rail__link:hover .about-rail__index,
.page-about .about-rail__link.is-spied .about-rail__index {
  color: var(--c-primary);
}

.page-about .about-rail__index {
  font-weight: 800;
  color: var(--c-gold);
  font-size: 12px;
}

.page-about .about-rail__note {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: var(--f-body);
  font-size: 14px;
  color: rgba(255, 255, 255, 0.65);
}

.page-about .about-rail__note strong {
  font-family: var(--f-head);
  color: var(--c-gold);
  font-weight: 800;
  letter-spacing: 0.12em;
}

.page-about .about-content {
  background: var(--c-light);
  color: var(--c-dark);
  padding: 48px 20px 72px;
}

.page-about .about-section {
  max-width: var(--about-content-max);
  margin: 0 auto 72px;
  scroll-margin-top: calc(var(--header-h) + 16px);
}

.page-about .about-section:last-child {
  margin-bottom: 0;
}

.page-about .about-section__heading {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 24px;
}

.page-about .about-section__index {
  font-family: var(--f-head);
  font-weight: 900;
  font-size: clamp(40px, 6vw, 68px);
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--c-primary);
  opacity: 0.12;
}

.page-about .about-section__kicker {
  margin: 0 0 2px;
  font-family: var(--f-head);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-desert);
}

.page-about .about-section__title {
  margin: 0;
  font-family: var(--f-head);
  font-size: clamp(26px, 4vw, 36px);
  font-weight: 800;
  line-height: 1.2;
  color: var(--c-dark);
}

.page-about .about-section__intro {
  margin: 0 0 32px;
  max-width: 70ch;
  font-family: var(--f-body);
  font-size: 17px;
  line-height: 1.7;
  color: rgba(31, 41, 55, 0.85);
}

.page-about .about-section__intro a,
.page-about .bookmark-note a {
  color: var(--c-primary);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: var(--c-gold);
  font-weight: 700;
}

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

.page-about .origin-grid {
  display: grid;
  gap: 28px;
  align-items: start;
}

.page-about .origin-story {
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.7;
}

.page-about .origin-story p {
  margin: 0 0 16px;
}

.page-about .origin-story__lead {
  font-family: var(--f-head);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--c-primary);
}

.page-about .origin-media {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--c-primary);
}

.page-about .origin-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-about .origin-media figcaption {
  padding: 10px 4px;
  font-family: var(--f-head);
  font-size: 12px;
  color: rgba(31, 41, 55, 0.6);
}

.page-about .bookmark-cards {
  display: grid;
  gap: 20px;
  margin-top: 12px;
}

.page-about .bookmark-card {
  border-radius: var(--radius-lg);
  padding: 24px;
  background: var(--c-primary);
  color: rgba(255, 255, 255, 0.9);
}

.page-about .bookmark-card__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.page-about .bookmark-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  height: 44px;
  padding: 0 12px;
  border-radius: var(--radius-pill);
  background: var(--c-gold);
  color: var(--c-primary);
  font-family: var(--f-head);
  font-size: 14px;
  font-weight: 900;
}

.page-about .bookmark-card h3 {
  margin: 0;
  font-family: var(--f-head);
  font-size: 20px;
  color: var(--c-white);
}

.page-about .bookmark-card p {
  margin: 0 0 16px;
  font-family: var(--f-body);
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.76);
}

.page-about .bookmark-card__steps {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.page-about .bookmark-card__steps span {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-head);
  font-size: 14px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.9);
}

.page-about .bookmark-card__steps b {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(212, 165, 58, 0.2);
  color: var(--c-gold);
  font-size: 12px;
}

.page-about .bookmark-note {
  margin-top: 28px;
  border-left: 4px solid var(--c-gold);
  padding: 4px 0 4px 16px;
}

.page-about .bookmark-note strong {
  font-family: var(--f-head);
  font-size: 16px;
  color: var(--c-primary);
}

.page-about .bookmark-note ul {
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 6px;
}

.page-about .bookmark-note li {
  position: relative;
  padding-left: 20px;
  font-family: var(--f-body);
  font-size: 15px;
  line-height: 1.6;
  color: var(--c-dark);
}

.page-about .bookmark-note li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-oasis);
}

.page-about .coverage-map {
  margin: 8px 0 32px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-about .coverage-map img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-about .coverage-map figcaption {
  padding: 10px 4px;
  font-size: 12px;
  color: rgba(31, 41, 55, 0.6);
}

.page-about .coverage-phases {
  position: relative;
  margin-top: 8px;
  padding-left: 32px;
}

.page-about .coverage-phases::before {
  content: '';
  position: absolute;
  left: 9px;
  top: 6px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-gold), var(--c-desert), var(--c-oasis));
  border-radius: 2px;
}

.page-about .coverage-phase {
  position: relative;
  padding-bottom: 32px;
}

.page-about .coverage-phase:last-child {
  padding-bottom: 0;
}

.page-about .coverage-phase__marker {
  position: absolute;
  left: -32px;
  top: 6px;
  width: 20px;
  height: 20px;
  border: 4px solid var(--c-gold);
  border-radius: 50%;
  background: var(--c-light);
}

.page-about .coverage-phase__tag {
  display: inline-block;
  margin-bottom: 6px;
  font-family: var(--f-head);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-desert);
}

.page-about .coverage-phase__card h3 {
  margin: 0 0 8px;
  font-family: var(--f-head);
  font-size: 19px;
  font-weight: 800;
  color: var(--c-primary);
}

.page-about .coverage-phase__card p {
  margin: 0;
  font-family: var(--f-body);
  font-size: 15px;
  line-height: 1.7;
  color: rgba(31, 41, 55, 0.8);
}

.page-about .version-dashboard {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  margin: 28px 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: rgba(30, 58, 138, 0.35);
}

.page-about .version-metric {
  padding: 22px 16px;
  background: var(--c-primary);
  text-align: center;
}

.page-about .version-metric__value {
  display: block;
  font-family: var(--f-head);
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 900;
  line-height: 1.2;
  color: var(--c-gold);
}

.page-about .version-metric__label {
  display: block;
  margin-top: 6px;
  font-family: var(--f-head);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.7);
}

.page-about .version-media {
  margin: 24px 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-about .version-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.page-about .version-media figcaption {
  padding: 10px 4px;
  font-size: 12px;
  color: rgba(31, 41, 55, 0.6);
}

.page-about .compliance-card {
  background: var(--c-primary);
  color: rgba(255, 255, 255, 0.88);
  border-radius: var(--radius-lg);
  padding: 28px;
  overflow: hidden;
  display: grid;
  gap: 22px;
}

.page-about .compliance-card__badge {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  padding: 18px 22px;
  border-radius: 18px;
  background: rgba(212, 165, 58, 0.14);
  border: 1px solid rgba(212, 165, 58, 0.5);
  justify-self: start;
}

.page-about .compliance-card__badge span {
  font-family: var(--f-head);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--c-gold);
}

.page-about .compliance-card__badge strong {
  font-family: var(--f-head);
  font-size: 26px;
  font-weight: 900;
  color: var(--c-gold);
}

.page-about .compliance-card__body h3 {
  margin: 0 0 10px;
  font-family: var(--f-head);
  font-size: 21px;
  color: var(--c-white);
}

.page-about .compliance-card__body p {
  margin: 0 0 14px;
  font-family: var(--f-body);
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.78);
}

.page-about .compliance-card__list {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .compliance-card__list li {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-family: var(--f-head);
  font-size: 14px;
  color: var(--c-white);
  padding-bottom: 10px;
  border-bottom: 1px dashed rgba(255, 255, 255, 0.14);
}

.page-about .compliance-card__list li span {
  color: rgba(255, 255, 255, 0.65);
}

.page-about .compliance-card__note {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.55);
}

.page-about .compliance-cta {
  margin-top: 24px;
  padding: 20px;
  border-radius: var(--radius-lg);
  background: rgba(30, 58, 138, 0.08);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.page-about .compliance-cta p {
  margin: 0;
  font-family: var(--f-head);
  font-size: 15px;
  font-weight: 700;
  color: var(--c-primary);
}

@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 56px 32px 64px;
  }

  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.9fr);
    gap: 40px;
  }

  .page-about .about-hero__content {
    max-width: 640px;
  }

  .page-about .about-hero__brand {
    text-align: right;
  }

  .page-about .origin-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  }

  .page-about .bookmark-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-about .compliance-card {
    grid-template-columns: 220px 1fr;
    align-items: start;
  }

  .page-about .compliance-card__badge {
    margin-top: 6px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail-w) 1fr;
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    padding: 28px 16px;
    border: none;
    background: var(--c-primary);
  }

  .page-about .about-rail__timeline {
    flex-direction: column;
    gap: 6px;
    overflow: visible;
  }

  .page-about .about-rail__link {
    width: 100%;
    border-radius: 14px;
    padding: 12px 16px;
  }

  .page-about .about-rail__note {
    margin-top: 24px;
  }

  .page-about .about-content {
    padding: 64px 32px 96px;
  }
}