.page-about {
  --about-rail: 208px;
  --about-gap: clamp(22px, 4vw, 56px);
  --about-line-dark: rgba(159, 179, 200, 0.16);
  background: var(--arena);
  color: var(--paper);
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(28px, 5vw, 56px) clamp(32px, 5vw, 64px);
  background:
    radial-gradient(120% 90% at 85% 0%, rgba(139, 92, 246, 0.22), transparent 62%),
    linear-gradient(155deg, var(--arena) 0%, var(--arena-2) 58%, var(--arena) 100%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, var(--about-line-dark) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(0deg, var(--about-line-dark) 0 1px, transparent 1px 72px);
  opacity: 0.5;
  pointer-events: none;
}

.page-about .about-hero .wrap {
  position: relative;
  z-index: 1;
}

.page-about .hero-crumbs {
  margin-bottom: clamp(18px, 3vw, 32px);
}

.page-about .crumbs a {
  color: var(--haze);
}

.page-about .crumbs li {
  color: var(--haze);
}

.page-about .hero-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: end;
}

.page-about .hero-copy .eyebrow {
  color: var(--lime);
  letter-spacing: 0.14em;
}

.page-about .hero-copy h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.4vw, 60px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-about .hero-copy .lead {
  margin-top: 18px;
  max-width: 40em;
  font-family: var(--font-serif);
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.85;
  color: rgba(244, 235, 217, 0.86);
}

.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .hero-figure {
  position: relative;
  margin: 0;
}

.page-about .hero-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 88%);
  filter: saturate(1.05) contrast(1.05);
}

.page-about .hero-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(182, 255, 59, 0.18), transparent 55%, rgba(11, 27, 51, 0.7));
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 88%);
  pointer-events: none;
}

.page-about .hero-figure figcaption {
  margin-top: 12px;
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--haze);
  border-left: 2px solid var(--orange);
  padding-left: 10px;
}

.page-about .scorebar {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--about-line-dark);
  border: 1px solid var(--about-line-dark);
}

.page-about .scorebar li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  background: rgba(11, 27, 51, 0.86);
}

.page-about .scorebar-k {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--haze);
}

.page-about .scorebar-v {
  font-family: var(--font-mono);
  font-size: clamp(24px, 4vw, 34px);
  font-weight: 700;
  color: var(--lime);
  line-height: 1;
}

.page-about .about-body {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
  padding-bottom: clamp(40px, 6vw, 88px);
}

.page-about .toc-rail {
  order: 2;
  padding: 16px 0 0;
  border-top: 1px solid var(--line-strong);
}

.page-about .toc-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--haze);
}

.page-about .toc {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .toc a {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 5px 0;
  font-size: 14px;
  color: var(--haze);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .toc a:hover,
.page-about .toc a.is-active {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.page-about .toc-num {
  font-size: 11px;
  color: var(--orange);
}

.page-about .toc-top {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--paper);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
}

.page-about .toc-top:hover {
  color: var(--lime);
}

.page-about .about-content {
  order: 1;
  min-width: 0;
}

.page-about .chapter {
  padding-block: clamp(28px, 4vw, 52px);
  border-top: 1px solid var(--line-strong);
}

.page-about .chapter:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .chapter-num {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--orange);
}

.page-about .chapter-title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3.4vw, 32px);
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .chapter-intro {
  margin: 0 0 22px;
  max-width: 36em;
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.8;
  color: var(--haze);
}

.page-about .chapter-grid {
  display: grid;
  gap: clamp(18px, 3vw, 34px);
}

.page-about .chapter .prose {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: rgba(244, 235, 217, 0.88);
}

.page-about .chapter .prose p {
  margin: 0 0 15px;
  max-width: 40em;
}

.page-about .chapter .prose a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(182, 255, 59, 0.45);
}

.page-about .chapter .prose a:hover {
  border-bottom-color: var(--lime);
}

.page-about .side-note {
  padding: 14px 0 14px 16px;
  border-left: 2px solid var(--lime);
  font-family: var(--font-serif);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--haze);
}

.page-about .side-note-title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--lime);
}

.page-about .side-note p {
  margin: 0 0 10px;
}

.page-about .side-note ul {
  margin: 0;
  padding-left: 16px;
}

.page-about .side-note li {
  margin-bottom: 8px;
}

.page-about .duty-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--about-line-dark);
  border: 1px solid var(--about-line-dark);
}

.page-about .duty-list > li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  padding: 16px;
  background: var(--arena-2);
  transition: background 0.22s ease, transform 0.22s ease;
}

.page-about .duty-list > li:hover {
  background: var(--arena-3);
}

.page-about .duty-no {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--lime);
  padding-top: 2px;
}

.page-about .duty-list h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .duty-list p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(244, 235, 217, 0.78);
}

.page-about .chapter--paper {
  margin-block: clamp(20px, 3vw, 36px);
  padding: clamp(22px, 4vw, 44px) clamp(18px, 3vw, 40px);
  background:
    repeating-linear-gradient(0deg, rgba(36, 28, 23, 0.045) 0 1px, transparent 1px 56px),
    var(--paper);
  color: var(--ink);
  border-top: 0;
}

.page-about .chapter--paper .chapter-title {
  color: var(--ink);
}

.page-about .chapter--paper .chapter-num {
  color: var(--orange);
}

.page-about .chapter--paper .chapter-intro {
  color: rgba(36, 28, 23, 0.74);
}

.page-about .chapter--paper .prose.prose--paper {
  color: var(--ink);
}

.page-about .chapter--paper .prose.prose--paper a {
  color: var(--ink);
  border-bottom-color: var(--orange);
}

.page-about .side-note--paper {
  border-left-color: var(--orange);
  color: rgba(36, 28, 23, 0.78);
}

.page-about .side-note--paper .side-note-title {
  color: var(--orange);
}

.page-about .timeline {
  margin: 0;
  padding: 0 0 0 22px;
  list-style: none;
  position: relative;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--violet), var(--orange) 45%, var(--lime));
}

.page-about .tl-item {
  position: relative;
  margin-bottom: 6px;
}

.page-about .tl-item .tl-dot {
  position: absolute;
  left: -22px;
  top: 12px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 3px var(--paper);
}

.page-about .tl-item--prod .tl-dot {
  background: var(--lime);
}

.page-about .tl-item details {
  border-bottom: 1px solid var(--line-ink);
}

.page-about .tl-item summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-about .tl-item summary:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 3px;
}

.page-about .tl-year {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.02em;
}

.page-about .tl-head {
  flex: 1 1 180px;
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink);
}

.page-about .tl-item summary::after {
  content: "＋";
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--orange);
}

.page-about .tl-item details[open] summary::after {
  content: "－";
}

.page-about .tl-item details[open] summary {
  border-bottom: 1px dashed var(--line-ink);
}

.page-about .tl-body {
  padding: 4px 0 14px;
}

.page-about .tl-body p {
  margin: 0;
  max-width: 38em;
  font-size: 14.5px;
  line-height: 1.85;
  color: rgba(36, 28, 23, 0.82);
}

.page-about .timeline-legend {
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: rgba(36, 28, 23, 0.66);
}

.page-about .legend-key {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-right: 5px;
  border-radius: 50%;
  vertical-align: middle;
}

.page-about .legend-key--biz {
  background: var(--orange);
}

.page-about .legend-key--prod {
  background: var(--lime);
}

.page-about .team-grid {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  align-items: start;
}

.page-about .team-table {
  width: 100%;
  margin-top: 22px;
  border-collapse: collapse;
  font-size: 14px;
  text-align: left;
}

.page-about .team-table thead th {
  padding: 8px 10px 8px 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: rgba(36, 28, 23, 0.62);
  border-bottom: 2px solid var(--ink);
}

.page-about .team-table tbody th {
  padding: 12px 10px 12px 0;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  border-bottom: 1px solid var(--line-ink);
  white-space: nowrap;
}

.page-about .team-table tbody td {
  padding: 12px 10px 12px 0;
  line-height: 1.7;
  color: rgba(36, 28, 23, 0.82);
  border-bottom: 1px solid var(--line-ink);
}

.page-about .team-table td.num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--orange);
  text-align: right;
  padding-right: 16px;
}

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

.page-about .team-figure img,
.page-about .closing-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line-ink);
}

.page-about .team-figure figcaption,
.page-about .closing-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-serif);
  font-size: 13px;
  line-height: 1.7;
  color: rgba(36, 28, 23, 0.68);
}

.page-about .partner-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 24px;
}

.page-about .partner-cols {
  display: grid;
  gap: 1px;
  background: var(--about-line-dark);
  border: 1px solid var(--about-line-dark);
}

.page-about .partner-col {
  padding: 18px;
  background: var(--arena-2);
}

.page-about .partner-col h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--lime);
  letter-spacing: 0.02em;
}

.page-about .partner-col p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(244, 235, 217, 0.78);
}

.page-about .partner-foot {
  margin: 20px 0 0;
  font-family: var(--font-serif);
  font-size: 14px;
  line-height: 1.8;
  color: var(--haze);
}

.page-about .partner-foot a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(182, 255, 59, 0.45);
}

.page-about .chapter--closing {
  border-top: 1px solid var(--line-strong);
}

.page-about .closing-grid {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  align-items: start;
}

.page-about .closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

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

.page-about .closing-figure figcaption {
  color: var(--haze);
}

@media (min-width: 640px) {
  .page-about .scorebar {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .partner-cols {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .duty-list > li {
    grid-template-columns: 56px minmax(0, 1fr);
    padding: 20px 22px;
  }
}

@media (min-width: 900px) {
  .page-about .hero-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-about .hero-figure {
    margin-bottom: 8px;
  }

  .page-about .about-body {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: var(--about-gap);
    align-items: start;
  }

  .page-about .toc-rail {
    order: 1;
    position: sticky;
    top: 96px;
    padding-top: 0;
    border-top: 0;
  }

  .page-about .toc {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
    border-left: 1px solid var(--line-strong);
  }

  .page-about .toc a {
    padding: 7px 0 7px 12px;
    border-bottom: 0;
    border-left: 2px solid transparent;
    margin-left: -1px;
  }

  .page-about .toc a:hover,
  .page-about .toc a.is-active {
    border-bottom-color: transparent;
    border-left-color: var(--lime);
  }

  .page-about .about-content {
    order: 2;
    padding-left: clamp(0px, 2vw, 28px);
    border-left: 1px solid var(--line);
  }

  .page-about .chapter-grid {
    grid-template-columns: minmax(0, 1fr) 232px;
    align-items: start;
  }

  .page-about .team-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-about .closing-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
  }

  .page-about .chapter--paper .chapter-grid {
    grid-template-columns: minmax(0, 1fr) 220px;
  }

  .page-about .timeline {
    padding-left: 30px;
  }

  .page-about .tl-item .tl-dot {
    left: -30px;
  }
}

@media (min-width: 1200px) {
  .page-about {
    --about-rail: 232px;
  }

  .page-about .chapter .prose {
    font-size: 17px;
  }

  .page-about .duty-list p,
  .page-about .partner-col p {
    font-size: 15px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .duty-list > li,
  .page-about .toc a {
    transition: none;
  }
}
<<<END>>>