.page-about {
  --about-line: rgba(22, 24, 29, 0.14);
  --about-line-strong: rgba(22, 24, 29, 0.3);
  background: var(--paper);
  color: var(--graphite);
}

.page-about .about-top {
  padding-top: clamp(0.9rem, 2.5vw, 1.6rem);
  background: var(--paper);
}

.page-about .about-hero {
  position: relative;
  overflow: hidden;
  margin-top: 0.6rem;
  padding: clamp(2.4rem, 7vw, 4.6rem) 0 clamp(3rem, 8vw, 5.4rem);
  background:
    linear-gradient(118deg, #16181d 0%, #16181d 58%, #1f2a44 58%, #1f2a44 100%);
  color: var(--paper);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  left: -12%;
  right: -12%;
  bottom: 26%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--track-red) 26%, var(--track-red) 74%, transparent);
  transform: rotate(-3.5deg);
  opacity: 0.9;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -6%;
  top: -8%;
  width: 46%;
  height: 72%;
  background-image: repeating-linear-gradient(90deg, rgba(244, 239, 231, 0.16) 0 1px, transparent 1px 26px);
  transform: skewX(-14deg);
  pointer-events: none;
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(1.6rem, 5vw, 3rem);
  min-width: 0;
}

.page-about .about-hero .eyebrow {
  color: var(--volt);
  letter-spacing: 0.16em;
}

.page-about .about-hero h1 {
  margin: 0.5rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.5rem, 10vw, 5.4rem);
  line-height: 0.94;
  letter-spacing: -0.015em;
  color: var(--paper);
  text-wrap: balance;
}

.page-about .about-lede {
  max-width: 44ch;
  margin: clamp(1.1rem, 3vw, 1.8rem) 0 0;
  padding-left: 1rem;
  border-left: 3px solid var(--track-red);
  font-size: clamp(0.95rem, 2.4vw, 1.0625rem);
  line-height: 1.9;
  color: rgba(244, 239, 231, 0.84);
}

.page-about .about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: clamp(1.4rem, 4vw, 2.2rem);
}

.page-about .about-slate {
  position: relative;
  padding: 1.15rem 1.15rem 1.35rem;
  background: rgba(31, 42, 68, 0.92);
  border: 1px solid var(--on-dark);
  border-left: 4px solid var(--neon);
  box-shadow: 8px 8px 0 rgba(201, 47, 36, 0.35);
}

.page-about .slate-key {
  margin: 0 0 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.22em;
  color: var(--neon);
}

.page-about .slate-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.9rem;
}

.page-about .slate-item {
  display: grid;
  gap: 0.2rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--on-dark);
}

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

.page-about .slate-num {
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 4.6vw, 1.75rem);
  font-weight: 700;
  line-height: 1;
  color: var(--volt);
}

.page-about .slate-unit {
  font-size: 0.6em;
  margin-left: 0.15em;
  color: var(--paper);
}

.page-about .slate-txt {
  font-size: 0.8125rem;
  line-height: 1.65;
  color: rgba(244, 239, 231, 0.76);
}

.page-about .about-manual {
  display: block;
  padding: clamp(2rem, 6vw, 4rem) 0 clamp(2.4rem, 6vw, 4rem);
  min-width: 0;
}

.page-about .manual-index {
  min-width: 0;
  padding-bottom: 1rem;
  margin-bottom: 1.4rem;
  border-bottom: 2px solid var(--graphite);
}

.page-about .index-key {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.24em;
  color: var(--rock);
}

.page-about .index-list {
  display: flex;
  gap: 0.5rem;
  margin: 0.7rem 0 0;
  padding: 0 0 0.2rem;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .index-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.42rem 0.7rem;
  white-space: nowrap;
  border: 1px solid var(--about-line-strong);
  background: #fff;
  color: var(--graphite);
  font-size: 0.8125rem;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.page-about .index-link:hover,
.page-about .index-link:focus-visible {
  background: var(--track-red);
  border-color: var(--track-red);
  color: var(--paper);
}

.page-about .index-num {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--track-red);
}

.page-about .index-link:hover .index-num,
.page-about .index-link:focus-visible .index-num {
  color: var(--volt);
}

.page-about .manual-body {
  min-width: 0;
}

.page-about .chapter {
  padding: clamp(1.8rem, 5vw, 3.2rem) 0 clamp(2rem, 5.5vw, 3.4rem);
  border-top: 1px solid var(--about-line);
}

.page-about .chapter:first-child {
  border-top: 3px solid var(--graphite);
}

.page-about .chapter-head {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: clamp(1rem, 3vw, 1.6rem);
}

.page-about .chapter-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--track-red);
  padding-right: 0.75rem;
  border-right: 1px solid var(--about-line-strong);
}

.page-about .chapter h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.55rem, 5.2vw, 2.6rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--graphite);
}

.page-about .chapter .lede {
  max-width: 60ch;
  margin: 0 0 clamp(1.2rem, 3.5vw, 1.9rem);
  font-size: clamp(0.95rem, 2.4vw, 1.0625rem);
  line-height: 1.9;
  color: #2c3038;
}

.page-about .chapter-body {
  display: grid;
  gap: clamp(1.2rem, 4vw, 2.4rem);
  min-width: 0;
}

.page-about .chapter-text p {
  margin: 0 0 0.95rem;
  font-size: 0.9375rem;
  line-height: 1.92;
  color: #3a3f47;
}

.page-about .chapter-text p:last-child {
  margin-bottom: 0;
}

.page-about .chapter-figure {
  position: relative;
  margin: 0;
  padding: 0.7rem;
  background: #fff;
  border: 1px solid var(--about-line-strong);
  box-shadow: 7px 7px 0 rgba(22, 24, 29, 0.08);
  transform: rotate(-0.6deg);
}

.page-about .chapter-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.94) contrast(1.04);
}

.page-about .chapter-figure .figure-tag {
  display: block;
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--rock);
}

.page-about .chapter-figure--wide {
  margin-bottom: clamp(1.2rem, 4vw, 2rem);
  transform: rotate(0.4deg);
}

.page-about .city-map {
  position: relative;
  padding: clamp(1rem, 3.5vw, 1.6rem);
  background:
    linear-gradient(135deg, rgba(199, 205, 212, 0.55) 0%, rgba(244, 239, 231, 0.9) 62%);
  border: 1px solid var(--about-line-strong);
  border-left: 5px solid var(--moss);
}

.page-about .map-key {
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--graphite);
}

.page-about .map-cities {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .city-chip {
  padding: 0.3rem 0.6rem;
  background: #fff;
  border: 1px solid var(--about-line-strong);
  font-size: 0.8125rem;
  font-weight: 600;
  color: #2c3038;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.page-about .city-chip:hover {
  background: var(--track-red);
  border-color: var(--track-red);
  color: var(--paper);
  transform: translateY(-2px);
}

.page-about .map-note {
  margin: 0.9rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--rock);
}

.page-about .atlas-rows {
  margin: clamp(1.2rem, 4vw, 1.8rem) 0 0;
  padding: 0;
  list-style: none;
}

.page-about .atlas-row {
  display: grid;
  grid-template-columns: 2.1rem minmax(0, 1fr);
  gap: 0.6rem;
  padding: 1rem 0;
  border-bottom: 1px dashed var(--about-line-strong);
}

.page-about .atlas-row:first-child {
  border-top: 1px dashed var(--about-line-strong);
}

.page-about .atlas-idx {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--track-red);
  line-height: 1.5;
}

.page-about .atlas-main h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.125rem;
  letter-spacing: 0.01em;
  color: var(--graphite);
}

.page-about .atlas-main p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.85;
  color: #3a3f47;
}

.page-about .time-list {
  margin: clamp(1.2rem, 4vw, 1.8rem) 0 0;
  padding: 0 0 0 1.1rem;
  list-style: none;
  border-left: 2px solid var(--about-line-strong);
}

.page-about .time-item {
  position: relative;
  padding: 0 0 0.85rem;
}

.page-about .time-item::before {
  content: "";
  position: absolute;
  left: calc(-1.1rem - 6px);
  top: 0.72rem;
  width: 10px;
  height: 10px;
  background: var(--paper);
  border: 2px solid var(--track-red);
  border-radius: 50%;
}

.page-about .time-node {
  background: #fff;
  border: 1px solid var(--about-line);
  border-left: 3px solid var(--track-red);
}

.page-about .time-summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 0.75rem;
  padding: 0.75rem 0.9rem;
  cursor: pointer;
  list-style: none;
}

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

.page-about .time-summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1rem;
  line-height: 1;
  color: var(--track-red);
}

.page-about .time-node[open] .time-summary::after {
  content: "–";
}

.page-about .time-year {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--track-red);
  background: rgba(201, 47, 36, 0.09);
  padding: 0.15rem 0.4rem;
}

.page-about .time-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.0625rem;
  color: var(--graphite);
}

.page-about .time-detail {
  padding: 0 0.9rem 0.9rem;
  border-top: 1px dashed var(--about-line);
}

.page-about .time-detail p {
  margin: 0.7rem 0 0;
  font-size: 0.875rem;
  line-height: 1.85;
  color: #3a3f47;
}

.page-about .chapter-body--reverse {
  align-items: start;
}

.page-about .crew-list {
  margin: 1.1rem 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.7rem;
}

.page-about .crew-list li {
  padding: 0.75rem 0.85rem;
  background: rgba(199, 205, 212, 0.35);
  border-left: 3px solid var(--moss);
}

.page-about .crew-list h3 {
  margin: 0 0 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--graphite);
}

.page-about .crew-list p {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: #3a3f47;
}

.page-about .partner-wall {
  display: grid;
  gap: clamp(1rem, 3vw, 1.5rem);
  margin-top: clamp(1rem, 3vw, 1.5rem);
}

.page-about .partner-group h3 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.04em;
  color: var(--graphite);
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--about-line-strong);
}

.page-about .tag-cluster {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .board-card {
  margin-top: clamp(1.4rem, 4vw, 2.2rem);
  padding: clamp(1.1rem, 3.5vw, 1.7rem);
  background: var(--night);
  color: var(--paper);
  border-left: 5px solid var(--volt);
  box-shadow: 9px 9px 0 rgba(22, 24, 29, 0.12);
}

.page-about .board-card .mono-meta {
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  color: var(--neon);
}

.page-about .board-card h3 {
  margin: 0 0 0.9rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.15rem, 3.6vw, 1.5rem);
  line-height: 1.25;
  color: var(--paper);
}

.page-about .board-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.6rem;
}

.page-about .board-list li {
  display: grid;
  gap: 0.15rem;
  padding-top: 0.6rem;
  border-top: 1px solid var(--on-dark);
}

.page-about .board-key {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--volt);
}

.page-about .board-val {
  font-size: 0.8125rem;
  line-height: 1.75;
  color: rgba(244, 239, 231, 0.8);
}

.page-about .about-outro {
  position: relative;
  overflow: hidden;
  padding: clamp(2.2rem, 7vw, 4rem) 0 clamp(2.6rem, 7vw, 4.5rem);
  background: var(--graphite);
  color: var(--paper);
}

.page-about .about-outro::before {
  content: "";
  position: absolute;
  left: -10%;
  right: -10%;
  top: 0;
  height: 6px;
  background: repeating-linear-gradient(120deg, var(--track-red) 0 18px, transparent 18px 36px);
  opacity: 0.9;
}

.page-about .about-outro h2 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 5.5vw, 2.8rem);
  line-height: 1.1;
  color: var(--paper);
}

.page-about .outro-lede {
  max-width: 40ch;
  margin: 0 0 clamp(1.4rem, 4vw, 2.2rem);
  font-size: 0.9375rem;
  line-height: 1.85;
  color: rgba(244, 239, 231, 0.78);
}

.page-about .outro-grid {
  display: grid;
  gap: 0.75rem;
}

.page-about .outro-card {
  display: block;
  padding: 1rem 1.05rem 1.1rem;
  background: rgba(244, 239, 231, 0.05);
  border: 1px solid var(--on-dark);
  text-decoration: none;
  color: var(--paper);
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.page-about .outro-card:hover,
.page-about .outro-card:focus-visible {
  background: rgba(201, 47, 36, 0.16);
  border-color: var(--track-red);
  transform: translateY(-3px);
}

.page-about .outro-key {
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.2em;
  color: var(--neon);
}

.page-about .outro-card h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.0625rem;
  color: var(--paper);
}

.page-about .outro-card p {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.75;
  color: rgba(244, 239, 231, 0.74);
}

.page-about .outro-go {
  display: inline-block;
  margin-top: 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--volt);
  border-bottom: 1px solid var(--volt);
}

@media (min-width: 720px) {
  .page-about .chapter-body {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }

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

  .page-about .chapter-body--reverse .chapter-figure {
    order: -1;
  }

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

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

  .page-about .board-list li {
    grid-template-columns: 7rem minmax(0, 1fr);
    align-items: baseline;
    gap: 0.75rem;
  }
}

@media (min-width: 1000px) {
  .page-about .about-hero-inner {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.55fr);
    align-items: end;
  }

  .page-about .about-slate {
    margin-top: 3.5rem;
  }

  .page-about .about-manual {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: clamp(1.6rem, 4vw, 3.4rem);
    align-items: start;
  }

  .page-about .manual-index {
    position: sticky;
    top: 5.5rem;
    margin-bottom: 0;
    padding: 0 0 1rem;
    border-bottom: 0;
    border-top: 3px solid var(--graphite);
    padding-top: 0.8rem;
  }

  .page-about .index-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    margin-top: 0.9rem;
  }

  .page-about .index-link {
    display: flex;
    justify-content: flex-start;
    width: 100%;
    padding: 0.6rem 0;
    white-space: normal;
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--about-line);
  }

  .page-about .index-link:hover,
  .page-about .index-link:focus-visible {
    background: transparent;
    color: var(--track-red);
    border-color: var(--track-red);
    padding-left: 0.4rem;
  }

  .page-about .index-link:hover .index-num,
  .page-about .index-link:focus-visible .index-num {
    color: var(--track-red);
  }

  .page-about .partner-wall {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .outro-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .index-link,
  .page-about .city-chip,
  .page-about .outro-card {
    transition: none;
  }

  .page-about .city-chip:hover,
  .page-about .outro-card:hover,
  .page-about .outro-card:focus-visible {
    transform: none;
  }
}
<<<END>>>