.page-about {
  --about-rail: 208px;
  --about-gap: clamp(20px, 3vw, 44px);
  background: var(--ink);
  color: var(--silver);
  font-family: var(--font-sans);
  line-height: 1.75;
  padding-bottom: clamp(56px, 8vw, 110px);
}

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

.page-about h2,
.page-about h3 {
  font-family: var(--font-display);
  color: var(--paper);
  margin: 0;
  line-height: 1.28;
}

.page-about .about-hero {
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 10% 0%, rgba(201, 162, 39, 0.14), transparent 62%),
    linear-gradient(180deg, var(--ink-2), var(--ink) 72%);
  padding: clamp(26px, 5vw, 60px) 0 clamp(30px, 5vw, 64px);
}

.page-about .about-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: end;
}

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

.page-about .eyebrow {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0;
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 7vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.012em;
  color: var(--paper);
  margin: 14px 0 0;
}

.page-about .about-hero__lead {
  margin: 20px 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.6vw, 16.5px);
  color: var(--silver);
}

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

.page-about .about-hero__stats {
  list-style: none;
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--line-strong);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 12px;
}

.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1.2;
  color: var(--gold);
  letter-spacing: 0.04em;
}

.page-about .about-stat__label {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  color: var(--silver-2);
  letter-spacing: 0.02em;
}

.page-about .about-hero__figure {
  margin: 0;
  border: 2px solid var(--line-strong);
  background: var(--ink-3);
  box-shadow: var(--shadow-hard);
}

.page-about .media-frame__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .media-frame__caption {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--silver-2);
  padding: 10px 14px;
  border-top: 1px solid var(--line-strong);
  background: var(--ink-2);
}

.page-about .about-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  padding-top: clamp(30px, 5vw, 64px);
}

.page-about .toc__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
}

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

.page-about .toc__link {
  display: block;
  padding: 7px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--silver-2);
  text-decoration: none;
  border: 1px solid var(--line-strong);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-about .toc__link:hover,
.page-about .toc__link.is-active {
  color: var(--gold);
  border-color: var(--gold-deep);
  background: rgba(201, 162, 39, 0.08);
}

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

.page-about .about-section {
  padding: clamp(28px, 4vw, 52px) 0;
  border-top: 2px solid var(--line);
}

.page-about .about-flow > .about-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-section h2 {
  font-size: clamp(25px, 4vw, 40px);
  margin-top: 12px;
}

.page-about .about-section__lead {
  margin: 16px 0 0;
  max-width: 68ch;
  font-size: 15.5px;
  color: var(--silver);
}

.page-about .about-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 26px;
}

.page-about .about-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--ink-2);
  border: 2px solid var(--line-strong);
  padding: 20px 20px 18px;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold-deep);
  box-shadow: var(--shadow-hard);
}

.page-about .about-card__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cinnabar);
}

.page-about .about-card h3 {
  font-size: 19px;
}

.page-about .about-card p {
  margin: 0;
  font-size: 14.5px;
  color: var(--silver-2);
}

.page-about .about-card__more {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px dashed var(--line-strong);
}

.page-about .about-card__more summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
  list-style: none;
}

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

.page-about .about-card__more summary::before {
  content: "＋ ";
  color: var(--cinnabar);
}

.page-about .about-card__more[open] summary::before {
  content: "－ ";
}

.page-about .about-card__more p {
  margin-top: 8px;
  color: var(--silver);
  font-size: 13.5px;
}

.page-about .about-card--cta {
  border-left: 3px solid var(--cinnabar);
  background: linear-gradient(160deg, var(--ink-3), var(--ink-2));
}

.page-about .about-card__link {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid var(--gold-deep);
  align-self: flex-start;
  padding-bottom: 2px;
}

.page-about .about-card__link:hover {
  color: var(--paper);
  border-bottom-color: var(--cinnabar);
}

.page-about .about-figure {
  margin: clamp(26px, 4vw, 40px) 0 0;
  border: 2px solid var(--line-strong);
  background: var(--ink-3);
}

.page-about .about-subhead {
  margin-top: clamp(28px, 4vw, 42px);
  font-size: clamp(19px, 2.4vw, 24px);
}

.page-about .about-table-wrap {
  margin-top: 16px;
  overflow-x: auto;
  border: 2px solid var(--line-strong);
  background: var(--ink-2);
}

.page-about .about-table {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-about .about-table__caption {
  text-align: left;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--silver-2);
  border-bottom: 1px solid var(--line);
}

.page-about .about-table th {
  text-align: left;
  padding: 11px 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  background: linear-gradient(180deg, rgba(201, 162, 39, 0.18), rgba(201, 162, 39, 0.05));
  border-bottom: 1px solid var(--gold-deep);
}

.page-about .about-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--silver);
  vertical-align: top;
}

.page-about .about-table tbody tr:nth-child(even) {
  background: rgba(255, 255, 255, 0.028);
}

.page-about .about-table tbody tr:hover {
  background: rgba(201, 162, 39, 0.08);
}

.page-about .about-timeline {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 26px 26px;
  border-left: 2px solid var(--line-strong);
}

.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--cinnabar);
  box-shadow: 0 0 0 3px var(--ink);
}

.page-about .about-timeline__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 21px;
  letter-spacing: 0.06em;
  color: var(--gold);
  line-height: 1.2;
}

.page-about .about-timeline__card {
  margin-top: 10px;
  padding: 16px 18px;
  background: var(--ink-2);
  border: 2px solid var(--line-strong);
}

.page-about .about-timeline__card h3 {
  font-size: 18px;
}

.page-about .about-timeline__card p {
  margin: 8px 0 0;
  font-size: 14.5px;
  color: var(--silver-2);
}

.page-about .about-verify__svg {
  display: block;
  width: 100%;
  max-width: 660px;
  height: auto;
  margin: 26px 0 0;
}

.page-about .about-steps {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-about .about-steps li {
  padding: 18px;
  background: var(--ink-2);
  border: 2px solid var(--line-strong);
  border-top: 3px solid var(--gold-deep);
}

.page-about .about-steps li:nth-child(2) {
  border-top-color: var(--cinnabar);
}

.page-about .about-steps li:nth-child(3) {
  border-top-color: var(--silver-2);
}

.page-about .about-steps__k {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .about-steps h3 {
  font-size: 17px;
}

.page-about .about-steps p {
  margin: 8px 0 0;
  font-size: 14px;
  color: var(--silver-2);
}

.page-about .about-note {
  margin: 24px 0 0;
  padding: 14px 16px;
  border-left: 3px solid var(--gold-deep);
  background: var(--ink-2);
  font-size: 14px;
  color: var(--silver-2);
}

.page-about .about-note a {
  color: var(--gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-flow-steps {
  list-style: none;
  counter-reset: ds;
  margin: 26px 0 0;
  padding: 0;
}

.page-about .about-flow-steps li {
  counter-increment: ds;
  position: relative;
  padding: 0 0 20px 46px;
}

.page-about .about-flow-steps li::before {
  content: counter(ds, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--paper);
  background: rgba(200, 64, 46, 0.16);
  border: 2px solid var(--cinnabar);
}

.page-about .about-flow-steps h3 {
  font-size: 17px;
}

.page-about .about-flow-steps p {
  margin: 6px 0 0;
  font-size: 14.5px;
  color: var(--silver-2);
}

.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  margin-top: 26px;
}

.page-about .about-team__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 4px 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .about-team__role {
  font-size: 15px;
  color: var(--paper);
}

.page-about .about-team__count {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold);
  letter-spacing: 0.08em;
}

.page-about .about-team__bar {
  grid-column: 1 / -1;
  display: block;
  height: 8px;
  margin-top: 6px;
  background: var(--ink-3);
  border: 1px solid var(--line-strong);
}

.page-about .about-team__bar-fill {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--gold-deep), var(--gold));
}

.page-about .about-team__row:nth-child(1) .about-team__bar-fill {
  width: 37.5%;
}

.page-about .about-team__row:nth-child(2) .about-team__bar-fill {
  width: 30%;
}

.page-about .about-team__row:nth-child(3) .about-team__bar-fill {
  width: 20%;
}

.page-about .about-team__row:nth-child(4) .about-team__bar-fill {
  width: 12.5%;
}

.page-about .about-commit {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-about .about-commit li {
  padding: 16px 14px;
  background: var(--ink-2);
  border: 2px solid var(--line-strong);
  border-left: 3px solid var(--gold-deep);
}

.page-about .about-commit__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 24px;
  line-height: 1.15;
  color: var(--gold);
  letter-spacing: 0.02em;
}

.page-about .about-commit__unit {
  font-size: 13px;
  margin-left: 2px;
  color: var(--silver-2);
}

.page-about .about-commit__label {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  color: var(--silver-2);
}

.page-about .about-partners {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 26px;
}

.page-about .about-partner {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  background: var(--ink-2);
  border: 2px solid var(--line-strong);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .about-partner:hover {
  transform: translateY(-3px);
  border-color: var(--cinnabar);
}

.page-about .about-partner__tag {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--cinnabar);
}

.page-about .about-partner h3 {
  font-size: 19px;
}

.page-about .about-partner p {
  margin: 0;
  font-size: 14.5px;
  color: var(--silver-2);
}

.page-about .about-partner__link {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  color: var(--gold);
  text-decoration: none;
  align-self: flex-start;
  border-bottom: 1px solid var(--gold-deep);
  padding-bottom: 2px;
}

.page-about .about-partner__link:hover {
  color: var(--paper);
  border-bottom-color: var(--cinnabar);
}

.page-about .about-section--next {
  border-top: 2px solid var(--gold-deep);
}

.page-about .about-next {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: 24px;
}

.page-about .about-next a {
  display: block;
  padding: 18px;
  background: var(--ink-2);
  border: 2px solid var(--line-strong);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--paper);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-about .about-next a:hover {
  border-color: var(--cinnabar);
  background: var(--ink-3);
}

.page-about .about-next span {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--silver-2);
}

@media (min-width: 600px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

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

@media (min-width: 760px) {
  .page-about .about-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.85fr);
  }

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

  .page-about .about-timeline__item:nth-child(even) .about-timeline__card {
    margin-left: 26px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-body {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: var(--about-gap);
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
  }

  .page-about .toc__list {
    flex-direction: column;
    gap: 0;
  }

  .page-about .toc__link {
    border: 0;
    border-left: 2px solid var(--line-strong);
    padding: 9px 0 9px 16px;
    background: none;
  }

  .page-about .toc__link:hover,
  .page-about .toc__link.is-active {
    border-left-color: var(--cinnabar);
    background: none;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-card,
  .page-about .about-partner,
  .page-about .toc__link,
  .page-about .about-next a {
    transition: none;
  }

  .page-about .about-card:hover,
  .page-about .about-partner:hover {
    transform: none;
  }
}