.page-about {
  background: var(--ink-900);
  color: var(--text);
}

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

.page-about .about-mast {
  padding-bottom: clamp(20px, 3.5vw, 44px);
}

.page-about .about-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 40px);
  padding: clamp(18px, 3vw, 30px) 0 0;
}

.page-about .about-hero__rail {
  min-width: 0;
}

.page-about .about-toc {
  list-style: none;
  margin: 16px 0 0;
  padding: 0 0 0 14px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  border-left: 1px solid var(--line);
}

.page-about .about-toc li {
  min-width: 0;
}

.page-about .about-toc a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-about .about-toc a:hover,
.page-about .about-toc a:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.page-about .about-toc__idx {
  color: var(--amber);
  font-size: 11px;
  letter-spacing: 0.12em;
}

.page-about .about-hero__title {
  margin: 12px 0 0;
  font-size: clamp(31px, 6vw, 64px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-weight: 900;
  color: var(--text);
}

.page-about .about-hero__lead {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 40em;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-hero__facts {
  margin-top: clamp(22px, 3vw, 34px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-about .fact {
  padding: 14px 16px;
  min-width: 0;
}

.page-about .fact:nth-child(odd) {
  border-right: 1px solid var(--line);
}

.page-about .fact:nth-child(n + 3) {
  border-top: 1px solid var(--line);
}

.page-about .fact__key {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-about .fact__val {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  word-break: break-word;
}

.page-about .about-sec {
  padding: clamp(40px, 6vw, 78px) 0;
}

.page-about .about-sec--band {
  background: var(--ink-800);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-about .sec-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(14px, 2vw, 28px);
}

.page-about .sec-spine {
  display: none;
  margin: 0;
}

.page-about .about-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 24px;
  padding-bottom: 14px;
  margin-bottom: clamp(22px, 3vw, 38px);
  border-bottom: 1px solid var(--line);
}

.page-about .about-head__title {
  margin: 0;
  max-width: 24em;
  font-size: clamp(21px, 3vw, 33px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  font-weight: 900;
  color: var(--text);
}

.page-about .about-head__coord {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
  white-space: nowrap;
}

.page-about .about-cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 44px);
}

.page-about .about-cols__main p {
  margin: 0 0 1.2em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--text);
  max-width: 38em;
}

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

.page-about .about-cols__aside {
  border-left: 2px solid var(--amber);
  padding: 2px 0 2px 18px;
}

.page-about .roles {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .roles li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .roles li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  background: var(--ice);
}

.page-about .tl__figure {
  margin: 0 0 clamp(22px, 3vw, 34px);
}

.page-about .tl__nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  margin: 0 0 clamp(20px, 3vw, 32px);
  padding-bottom: 6px;
}

.page-about .tl__chip {
  flex: 0 0 auto;
  padding: 6px 11px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--line);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-about .tl__chip:hover,
.page-about .tl__chip:focus-visible {
  color: var(--amber);
  border-color: var(--amber);
}

.page-about .tl__chip--current {
  color: var(--amber);
  border-color: var(--amber);
}

.page-about .tl__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 22px;
  border-left: 1px solid var(--line);
}

.page-about .tl__item {
  position: relative;
  padding-bottom: clamp(22px, 3.2vw, 38px);
}

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

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 7px;
  width: 9px;
  height: 9px;
  background: var(--ink-900);
  border: 1px solid var(--ice);
}

.page-about .about-sec--band .tl__item::before {
  background: var(--ink-800);
}

.page-about .tl__item--current::before {
  background: var(--amber);
  border-color: var(--amber);
  box-shadow: 0 0 0 4px rgba(224, 163, 62, 0.16);
}

.page-about .tl__coord {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 6px;
  font-family: var(--font-mono);
}

.page-about .tl__year {
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--amber-soft);
}

.page-about .tl__ver {
  font-size: 16px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-about .tl__body {
  min-width: 0;
}

.page-about .tl__title {
  margin: 0 0 8px;
  font-size: clamp(17px, 2vw, 21px);
  line-height: 1.4;
  font-weight: 700;
  color: var(--text);
}

.page-about .tl__text {
  margin: 0;
  max-width: 42em;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .cov {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 46px);
  align-items: start;
}

.page-about .cov__text {
  min-width: 0;
}

.page-about .cov__text > p {
  margin: 0 0 1.2em;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--text);
}

.page-about .cov__list {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .cov__row {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr);
  gap: 6px 14px;
  align-items: center;
}

.page-about .cov__name {
  font-size: 14px;
  color: var(--text);
  white-space: nowrap;
}

.page-about .cov__bar {
  display: block;
  height: 6px;
  background: var(--ink-900);
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-about .cov__bar i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--ice), var(--amber));
}

.page-about .cov__bar--a i { width: 100%; }
.page-about .cov__bar--b i { width: 76%; }
.page-about .cov__bar--c i { width: 64%; }
.page-about .cov__bar--d i { width: 40%; }
.page-about .cov__bar--e i { width: 26%; }

.page-about .cov__tag {
  grid-column: 2;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-about .cov__tag--hot {
  color: var(--amber);
}

.page-about .cov__figure {
  margin: 0;
}

.page-about .sup {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3.4vw, 46px);
  align-items: start;
}

.page-about .sup__list {
  min-width: 0;
  border-top: 1px solid var(--line);
}

.page-about .sup__item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 6px 12px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .sup__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--ice);
  padding-top: 3px;
}

.page-about .sup__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--text);
}

.page-about .sup__text {
  margin: 0;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .sup__link {
  color: var(--amber);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-about .sup__link:hover,
.page-about .sup__link:focus-visible {
  color: var(--amber-soft);
  border-bottom-color: var(--amber-soft);
}

.page-about .sup__figure {
  margin: 0;
}

.page-about .sup__note {
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  max-width: 52em;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .paths__lead {
  margin: -8px 0 clamp(20px, 3vw, 30px);
  max-width: 36em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

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

.page-about .path {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding: clamp(18px, 2.6vw, 26px) 0;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.18s var(--ease);
}

.page-about .path:hover {
  border-bottom-color: var(--amber);
}

.page-about .path__meta {
  min-width: 0;
}

.page-about .path__cost {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.2vw, 22px);
  letter-spacing: 0.02em;
  color: var(--amber);
}

.page-about .path__name {
  margin: 4px 0 0;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text);
}

.page-about .path__text {
  margin: 0;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .path__link {
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-about .path__link:hover,
.page-about .path__link:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.page-about .about-data {
  --text: #0B1B2B;
  --muted: #5A6E7E;
  --line: #C9BFAE;

  background: var(--paper);
  color: var(--text);
  padding: clamp(40px, 6vw, 72px) 0 clamp(36px, 5vw, 64px);
}

.page-about .about-data__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 24px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-data__title {
  margin: 0;
  max-width: 22em;
  font-size: clamp(21px, 3vw, 32px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  font-weight: 900;
  color: var(--text);
}

.page-about .about-data__coord {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
  white-space: nowrap;
}

.page-about .about-data__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  margin-top: clamp(16px, 2.4vw, 26px);
}

.page-about .about-data__cell {
  padding: 18px 0;
  border-top: 1px solid var(--line);
}

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

.page-about .data-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(34px, 6vw, 56px);
  line-height: 1;
  letter-spacing: -0.02em;
  font-weight: 700;
  color: var(--text);
}

.page-about .data-num__unit {
  font-size: 0.42em;
  margin-left: 3px;
  letter-spacing: 0.04em;
}

.page-about .data-label {
  margin: 10px 0 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-about .about-data__note {
  margin: clamp(24px, 3.4vw, 36px) 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  max-width: 46em;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .about-data__link {
  color: var(--ink-900);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: border-color 0.18s var(--ease);
}

.page-about .about-data__link:hover,
.page-about .about-data__link:focus-visible {
  border-bottom-color: var(--ink-900);
}

@media (min-width: 620px) {
  .page-about .cov__row {
    grid-template-columns: 74px minmax(0, 1fr) auto;
    gap: 14px;
  }

  .page-about .cov__tag {
    grid-column: 3;
  }
}

@media (min-width: 760px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .fact:nth-child(odd) {
    border-right: 0;
  }

  .page-about .fact:nth-child(n + 3) {
    border-top: 0;
  }

  .page-about .fact + .fact {
    border-left: 1px solid var(--line);
  }

  .page-about .about-cols {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
  }

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

  .page-about .about-data__cell {
    border-top: 0;
    padding: 6px 0 6px clamp(16px, 2.2vw, 26px);
    border-left: 1px solid var(--line);
  }

  .page-about .about-data__cell:nth-child(odd) {
    border-left: 0;
    padding-left: 0;
  }

  .page-about .about-data__cell:nth-child(n + 3) {
    margin-top: 22px;
    padding-top: 26px;
    border-top: 1px solid var(--line);
  }
}

@media (min-width: 860px) {
  .page-about .about-hero {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: clamp(32px, 5vw, 76px);
    align-items: start;
  }

  .page-about .about-hero__rail {
    padding-top: 10px;
  }

  .page-about .about-toc {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 13px;
  }

  .page-about .tl__item {
    display: grid;
    grid-template-columns: 150px minmax(0, 1fr);
    gap: clamp(20px, 3vw, 44px);
  }

  .page-about .tl__coord {
    display: block;
    text-align: right;
    margin-bottom: 0;
    padding-right: 4px;
  }

  .page-about .tl__ver {
    display: block;
    margin-top: 4px;
    font-size: 20px;
  }

  .page-about .cov {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
  }

  .page-about .sup {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.86fr);
  }

  .page-about .path {
    grid-template-columns: 180px minmax(0, 1fr) auto;
    gap: clamp(16px, 3vw, 40px);
    align-items: start;
  }

  .page-about .path__link {
    justify-self: end;
    margin-top: 4px;
  }
}

@media (min-width: 1000px) {
  .page-about .sec-grid {
    grid-template-columns: 54px minmax(0, 1fr);
    gap: clamp(18px, 2.6vw, 36px);
  }

  .page-about .sec-spine {
    display: block;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.32em;
    color: var(--muted);
    border-left: 1px solid var(--line);
    padding-left: 10px;
    padding-top: 2px;
  }

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

  .page-about .about-data__cell,
  .page-about .about-data__cell:nth-child(odd),
  .page-about .about-data__cell:nth-child(n + 3) {
    border-left: 1px solid var(--line);
    border-top: 0;
    margin-top: 0;
    padding: 6px 0 6px clamp(16px, 2vw, 26px);
  }

  .page-about .about-data__cell:first-child {
    border-left: 0;
    padding-left: 0;
  }
}
<<<END>>>