.page-about {
  --about-border: rgba(11, 61, 46, 0.22);
  --about-border-gold: rgba(212, 175, 55, 0.4);
  --about-deep-rgb: 11, 61, 46;
  --about-gold-rgb: 212, 175, 55;
  background: var(--arena-paper);
  color: var(--arena-charcoal);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: clip;
}

.page-about .about-wrap {
  max-width: var(--container);
  margin: 0 auto;
}

.page-about .about-breadcrumb {
  padding: 18px var(--gutter) 0;
  max-width: var(--container);
  margin: 0 auto;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  color: var(--arena-slate);
}

.page-about .about-breadcrumb a {
  color: var(--arena-pine);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, color 0.25s ease;
}

.page-about .about-breadcrumb a:hover {
  border-color: var(--arena-gold);
  color: var(--arena-charcoal);
}

.page-about .about-breadcrumb [aria-current="page"] {
  color: var(--arena-slate);
  font-weight: 600;
}

.page-about .about-hero {
  position: relative;
  background:
    linear-gradient(135deg, transparent 25%, rgba(212, 175, 55, 0.1) 100%),
    var(--arena-ivory);
  border-bottom: 1px solid var(--about-border);
  padding: clamp(36px, 6vw, 76px) var(--gutter) clamp(32px, 5vw, 64px);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "ARCHIVE";
  position: absolute;
  right: -12px;
  bottom: -18px;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: clamp(4rem, 10vw, 8rem);
  letter-spacing: 0.06em;
  color: var(--arena-deep);
  opacity: 0.045;
  pointer-events: none;
  white-space: nowrap;
}

.page-about .about-hero-grid {
  display: grid;
  gap: 32px;
  position: relative;
}

.page-about .about-hero-kicker {
  font-family: var(--font-data);
  font-size: 0.8rem;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--arena-moss);
  margin: 0 0 16px;
}

.page-about .about-hero-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 5.4vw, 4.4rem);
  line-height: 1.08;
  margin: 0 0 22px;
  color: var(--arena-deep);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0 0.22em;
}

.page-about .about-hero-brand {
  display: inline-block;
}

.page-about .about-hero-word {
  display: inline-block;
  color: var(--arena-pine);
  position: relative;
}

.page-about .about-hero-word::after {
  content: "";
  display: block;
  width: 68px;
  height: 6px;
  background: var(--arena-gold);
  margin-top: 10px;
}

.page-about .about-hero-lead {
  font-size: 1.05rem;
  max-width: 56ch;
  margin: 0;
  color: var(--arena-charcoal);
}

.page-about .about-hero-aside {
  display: grid;
  grid-template-columns: minmax(100px, 1fr) auto;
  gap: 12px 20px;
  align-items: baseline;
  padding: 22px;
  border: 1px solid var(--about-border);
  background: var(--arena-paper);
  box-shadow: 8px 8px 0 rgba(11, 61, 46, 0.06);
  position: relative;
}

.page-about .about-aside-slogan {
  grid-column: 1 / -1;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--arena-deep);
  border-bottom: 2px solid var(--arena-gold);
  padding-bottom: 10px;
  margin: 0 0 4px;
}

.page-about .about-aside-note {
  font-size: 0.75rem;
  color: var(--arena-slate);
  letter-spacing: 0.12em;
  font-family: var(--font-data);
}

.page-about .about-aside-code {
  font-family: var(--font-data);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--arena-deep);
  text-align: right;
}

.page-about .about-aside-nav {
  grid-column: 1 / -1;
  display: grid;
  gap: 8px;
  margin-top: 6px;
  border-top: 1px dashed var(--about-border);
  padding-top: 12px;
}

.page-about .about-aside-nav a {
  font-size: 0.88rem;
  color: var(--arena-pine);
  text-decoration: none;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-about .about-aside-nav a:hover {
  border-bottom-color: var(--arena-gold);
  color: var(--arena-charcoal);
}

.page-about .about-toc {
  background: var(--arena-paper);
  border-bottom: 1px solid var(--about-border);
}

.page-about .about-toc-inner {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 14px var(--gutter);
  scrollbar-width: thin;
}

.page-about .about-toc-link {
  white-space: nowrap;
  font-size: 0.86rem;
  color: var(--arena-slate);
  text-decoration: none;
  border: 1px solid var(--about-border);
  padding: 8px 14px;
  display: inline-flex;
  gap: 8px;
  transition: border-color 0.2s, background-color 0.2s, color 0.2s;
}

.page-about .about-toc-link span {
  font-family: var(--font-data);
  color: var(--arena-gold);
  font-weight: 600;
}

.page-about .about-toc-link:hover {
  border-color: var(--arena-gold);
  color: var(--arena-charcoal);
  background: rgba(212, 175, 55, 0.08);
}

.page-about .about-section {
  padding: clamp(48px, 8vw, 96px) var(--gutter);
  scroll-margin-top: 96px;
}

.page-about .about-section--story,
.page-about .about-section--taxonomy {
  background: var(--arena-paper);
}

.page-about .about-section--data,
.page-about .about-section--ops {
  background: var(--arena-deep);
  color: rgba(244, 241, 232, 0.9);
}

.page-about .about-section-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px 18px;
  align-items: start;
  margin-bottom: 36px;
}

.page-about .about-section-index {
  font-family: var(--font-data);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 5px 10px;
  border: 1px solid var(--arena-gold);
  background: rgba(212, 175, 55, 0.08);
  color: var(--arena-pine);
  text-align: center;
  letter-spacing: 0.06em;
}

.page-about .about-section-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.7rem, 3.6vw, 2.8rem);
  margin: 0;
  line-height: 1.15;
}

.page-about .about-section-note {
  margin: 6px 0 0;
  color: var(--arena-slate);
  font-size: 0.95rem;
}

.page-about .about-section-head--light .about-section-index {
  color: var(--arena-gold-soft);
  background: rgba(212, 175, 55, 0.12);
}

.page-about .about-section-head--light .about-section-title {
  color: var(--arena-paper);
}

.page-about .about-section-head--light .about-section-note {
  color: rgba(244, 241, 232, 0.64);
}

.page-about .about-story-grid {
  display: grid;
  gap: 40px;
}

.page-about .about-story-inner {
  display: grid;
  gap: 26px;
  align-content: start;
}

.page-about .about-story-pull {
  font-size: 1.12rem;
  font-weight: 500;
  color: var(--arena-pine);
  border-left: 4px solid var(--arena-gold);
  padding-left: 20px;
  line-height: 1.75;
  margin: 0;
}

.page-about .about-story-figure {
  margin: 0;
}

.page-about .about-story-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  border: 1px solid var(--about-border);
}

.page-about .about-story-figure figcaption,
.page-about .about-data-figure figcaption,
.page-about .about-ops-figure figcaption {
  font-size: 0.8rem;
  color: var(--arena-slate);
  margin-top: 10px;
  letter-spacing: 0.02em;
}

.page-about .about-section--data .about-data-figure figcaption,
.page-about .about-section--ops .about-ops-figure figcaption {
  color: rgba(244, 241, 232, 0.6);
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

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

.page-about .about-tl-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: -16px;
  width: 2px;
  background: var(--arena-fern);
  opacity: 0.4;
}

.page-about .about-tl-item:last-child::before {
  height: 18px;
  bottom: auto;
  opacity: 0;
}

.page-about .about-tl-item::after {
  content: "";
  position: absolute;
  left: -5px;
  top: 22px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--arena-gold);
  border: 3px solid var(--arena-paper);
  box-shadow: 0 0 0 2px var(--arena-moss);
}

.page-about .about-tl-details {
  padding-left: 24px;
  margin: 0;
}

.page-about .about-tl-details[open] summary {
  margin-bottom: 12px;
}

.page-about .about-tl-details summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.page-about .about-tl-details summary::-webkit-details-marker {
  display: none;
}

.page-about .about-tl-tag {
  font-family: var(--font-data);
  font-weight: 600;
  font-size: 0.86rem;
  letter-spacing: 0.08em;
  background: var(--arena-deep);
  color: #ffffff;
  padding: 6px 12px;
  flex-shrink: 0;
}

.page-about .about-tl-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.18rem;
  color: var(--arena-charcoal);
}

.page-about .about-tl-body {
  background: var(--arena-paper);
  border: 1px solid var(--about-border);
  border-left: 4px solid var(--arena-deep);
  padding: 16px 18px;
  box-shadow: 6px 6px 0 rgba(11, 61, 46, 0.06);
  transition: transform 0.25s cubic-bezier(0.2, 0.7, 0.3, 1), box-shadow 0.25s ease;
}

.page-about .about-tl-details[open] .about-tl-body:hover {
  transform: translateY(-4px);
  box-shadow: 10px 12px 0 rgba(11, 61, 46, 0.1);
}

.page-about .about-tl-text {
  margin: 0;
  font-size: 0.98rem;
  color: var(--arena-charcoal);
}

.page-about .about-data-grid {
  display: grid;
  gap: 40px;
}

.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 28px;
  counter-reset: none;
}

.page-about .about-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: start;
  padding-left: 18px;
  border-left: 1px solid rgba(212, 175, 55, 0.35);
  position: relative;
}

.page-about .about-step::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 12px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--arena-gold);
}

.page-about .about-step-num {
  font-family: var(--font-data);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--arena-gold-soft);
  line-height: 1;
  padding-top: 4px;
}

.page-about .about-step-content h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.16rem;
  color: var(--arena-paper);
  margin: 0 0 8px;
}

.page-about .about-step-content p {
  margin: 0;
  font-size: 0.96rem;
  color: rgba(244, 241, 232, 0.72);
}

.page-about .about-data-side {
  display: grid;
  gap: 20px;
  align-content: start;
}

.page-about .about-data-figure {
  margin: 0;
}

.page-about .about-data-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 5 / 4;
  object-fit: cover;
  border: 1px solid rgba(212, 175, 55, 0.35);
}

.page-about .about-data-promise {
  background: var(--arena-pine);
  border: 1px solid rgba(212, 175, 55, 0.4);
  padding: 24px 22px;
  display: flex;
  align-items: center;
  gap: 18px;
}

.page-about .about-promise-num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  color: var(--arena-gold);
  line-height: 1;
  white-space: nowrap;
}

.page-about .about-promise-unit {
  font-size: 0.55em;
  font-weight: 700;
  color: var(--arena-gold-soft);
  margin-left: 2px;
  letter-spacing: 0.05em;
}

.page-about .about-promise-text {
  font-size: 0.9rem;
  color: rgba(244, 241, 232, 0.78);
  line-height: 1.5;
}

.page-about .about-taxo-grid {
  display: grid;
  gap: 18px;
}

.page-about .about-taxo-block {
  background: var(--arena-ivory);
  border: 1px solid var(--about-border);
  border-top: 4px solid var(--arena-gold);
  padding: 26px 24px;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.page-about .about-taxo-block:hover {
  transform: translateY(-4px);
  box-shadow: 8px 10px 0 rgba(11, 61, 46, 0.08);
}

.page-about .about-taxo-block--tag {
  border-top-color: var(--arena-deep);
}

.page-about .about-taxo-num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  line-height: 1;
  margin: 0 0 8px;
  color: var(--arena-deep);
}

.page-about .about-taxo-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.08rem;
  margin: 0 0 10px;
  color: var(--arena-charcoal);
}

.page-about .about-taxo-desc {
  margin: 0;
  font-size: 0.94rem;
  color: var(--arena-slate);
}

.page-about .about-taxo-block--tag .about-taxo-name {
  color: var(--arena-pine);
  font-size: 1.18rem;
  margin-bottom: 12px;
}

.page-about .about-taxo-chain {
  margin: 28px 0 0;
  font-family: var(--font-data);
  font-size: 0.88rem;
  color: var(--arena-pine);
  letter-spacing: 0.04em;
  border-top: 1px dashed var(--about-border);
  padding-top: 18px;
}

.page-about .about-ops-board {
  background: var(--arena-pine);
  border: 1px solid rgba(212, 175, 55, 0.35);
  padding: 26px;
  display: grid;
  gap: 28px;
}

.page-about .about-ops-metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px 18px;
}

.page-about .about-metric {
  display: flex;
  flex-direction: column;
  border-left: 3px solid var(--arena-gold);
  padding-left: 14px;
}

.page-about .about-metric-num {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  line-height: 1;
  color: var(--arena-gold);
}

.page-about .about-metric-label {
  font-size: 0.82rem;
  color: rgba(244, 241, 232, 0.74);
  margin-top: 6px;
}

.page-about .about-ops-figure {
  margin: 0;
}

.page-about .about-ops-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border: 1px solid rgba(212, 175, 55, 0.28);
}

.page-about .about-ops-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-ops-list li {
  padding-left: 22px;
  position: relative;
  font-size: 0.96rem;
  color: rgba(244, 241, 232, 0.82);
  line-height: 1.6;
}

.page-about .about-ops-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 9px;
  height: 9px;
  background: var(--arena-gold);
  transform: rotate(45deg);
}

.page-about .about-more {
  background: var(--arena-ivory);
  padding: clamp(48px, 7vw, 80px) var(--gutter);
  border-top: 1px solid var(--about-border);
}

.page-about .about-more-head {
  margin-bottom: 30px;
}

.page-about .about-more-kicker {
  font-family: var(--font-data);
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--arena-moss);
  margin: 0 0 8px;
}

.page-about .about-more-heading {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  color: var(--arena-deep);
  margin: 0;
}

.page-about .about-more-grid {
  display: grid;
  gap: 14px;
}

.page-about .about-more-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 14px;
  align-items: center;
  background: var(--arena-paper);
  border: 1px solid var(--about-border);
  border-left: 4px solid var(--arena-deep);
  padding: 16px 18px;
  color: var(--arena-charcoal);
  text-decoration: none;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-about .about-more-card:hover {
  border-left-color: var(--arena-gold);
  transform: translateY(-3px);
  box-shadow: 6px 8px 0 rgba(11, 61, 46, 0.08);
}

.page-about .about-more-index {
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--arena-pine);
  font-size: 0.98rem;
  white-space: nowrap;
}

.page-about .about-more-title {
  font-size: 0.94rem;
  color: var(--arena-slate);
  line-height: 1.4;
}

.page-about .about-more-arrow {
  color: var(--arena-gold);
  font-size: 1.35rem;
  line-height: 1;
  transition: transform 0.25s ease;
}

.page-about .about-more-card:hover .about-more-arrow {
  transform: translateX(4px);
}

@media (min-width: 700px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.7fr);
    gap: 44px;
    align-items: end;
  }

  .page-about .about-story-grid {
    grid-template-columns: minmax(260px, 0.7fr) minmax(0, 1.3fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .about-data-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.7fr);
    gap: 48px;
    align-items: start;
  }

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

  .page-about .about-taxo-block--lg {
    grid-column: span 1;
  }

  .page-about .about-ops-board {
    grid-template-columns: 1fr 1fr;
    padding: 32px;
  }

  .page-about .about-ops-metrics {
    grid-column: 1 / -1;
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-ops-figure {
    grid-column: 1 / 2;
    align-self: start;
  }

  .page-about .about-ops-list {
    grid-column: 2 / 3;
    align-content: center;
  }

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

@media (min-width: 1024px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.7fr) minmax(320px, 0.6fr);
  }

  .page-about .about-hero-aside {
    top: 90px;
  }

  .page-about .about-section-head {
    grid-template-columns: auto 1fr auto;
    align-items: baseline;
  }

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

  .page-about .about-taxo-block--lg {
    grid-column: span 1;
  }

  .page-about .about-taxo-chain {
    margin-top: 36px;
  }

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

  .page-about .about-more-card:first-child {
    grid-column: span 3;
    grid-template-columns: auto 1fr auto;
    padding: 22px 24px;
  }

  .page-about .about-more-card:first-child .about-more-index {
    font-size: 1.1rem;
  }

  .page-about .about-more-card:first-child .about-more-title {
    font-size: 1.08rem;
  }
}