.page-about {
  --about-band: var(--haze);
  --about-radius: var(--r-lg);
  background: var(--mist);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about .about-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem 1.5rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--hair);
}

.page-about .about-toolbar__link {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--teal-deep);
  text-decoration: underline;
  text-decoration-color: var(--sand);
  text-underline-offset: 5px;
  text-decoration-thickness: 2px;
}

.page-about .about-toolbar__link:hover {
  color: var(--sand-deep);
}

/* hero */
.page-about .about-hero {
  padding: clamp(1.9rem, 5vw, 3.6rem) 0 clamp(2.4rem, 6vw, 4.6rem);
  background: linear-gradient(175deg, var(--mist) 0%, var(--mist) 42%, var(--haze) 100%);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-about .about-hero .page-title {
  margin: 0.7rem 0 1rem;
  color: var(--ink);
  max-width: 22ch;
}

.page-about .about-hero__intro {
  margin: 0;
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--ink-80);
  max-width: 46ch;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.6rem;
}

.page-about .about-hero__side {
  background: var(--white);
  border: 1px solid var(--hair);
  border-radius: var(--about-radius);
  padding: 1.35rem 1.4rem 1.15rem;
  box-shadow: var(--shadow-card);
}

.page-about .about-side__title {
  margin: 0 0 0.9rem;
  font-family: var(--font-head);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  color: var(--teal);
  text-transform: uppercase;
}

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

.page-about .about-stamp__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.56rem 0;
  border-top: 1px solid var(--hair-soft);
}

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

.page-about .about-stamp dt {
  font-size: 0.85rem;
  color: var(--ink-60);
}

.page-about .about-stamp dd {
  margin: 0;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--teal-deep);
}

/* chapters */
.page-about .about-chapter {
  padding: clamp(2.6rem, 6vw, 4.8rem) 0;
}

.page-about .about-chapter--paper {
  background: var(--white);
}

.page-about .about-chapter--tint {
  background: var(--haze);
}

.page-about .about-chapter__band {
  position: relative;
  border-radius: var(--about-radius);
  overflow: hidden;
  background: var(--teal-deep);
}

.page-about .about-chapter__band img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.page-about .about-chapter__band::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(12, 27, 32, 0.05) 0%, rgba(12, 27, 32, 0.32) 52%, rgba(12, 27, 32, 0.82) 100%);
}

.page-about .about-chapter__band-text {
  position: absolute;
  left: clamp(1rem, 3vw, 2.4rem);
  right: clamp(1rem, 3vw, 2.4rem);
  bottom: clamp(1rem, 3vw, 1.9rem);
  z-index: 1;
  color: var(--white);
}

.page-about .about-chapter__band-text .section-title {
  color: var(--white);
  margin: 0.35rem 0 0;
  max-width: 20ch;
}

.page-about .about-chapter__num {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  color: var(--sand);
  font-weight: 700;
}

.page-about .about-chapter__band-text .about-chapter__num {
  color: var(--sand);
}

.page-about .about-chapter__grid {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.6rem);
  margin-top: clamp(1.6rem, 4vw, 2.6rem);
}

.page-about .about-chapter__grid--flip {
  margin-top: 0;
}

.page-about .about-chapter__body .section-title {
  margin: 0.4rem 0 0.85rem;
  max-width: 24ch;
}

.page-about .about-chapter__body p {
  margin: 0 0 1rem;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--ink-80);
}

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

.page-about .about-lead {
  font-size: 0.99rem;
  line-height: 1.9;
  color: var(--ink-80);
  max-width: 52ch;
}

.page-about .about-chapter__grid--flip .about-lead {
  margin: 0 0 1.5rem;
}

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

.page-about .media-frame {
  border-radius: var(--about-radius);
  overflow: hidden;
}

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

.page-about .media-caption {
  margin-top: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.02em;
  color: var(--gray);
}

/* side note */
.page-about .about-note {
  background: var(--white);
  border: 1px solid var(--hair);
  border-left: 3px solid var(--sand);
  border-radius: var(--r-md);
  padding: 1.15rem 1.25rem 1.2rem;
}

.page-about .about-note__list {
  margin: 0.75rem 0 0;
  padding-left: 1.1rem;
  display: grid;
  gap: 0.55rem;
}

.page-about .about-note__list li {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--ink-80);
}

/* ridge divider */
.page-about .about-ridge {
  color: var(--teal-soft);
}

.page-about .about-ridge svg {
  display: block;
  width: 100%;
  height: clamp(34px, 5vw, 54px);
  opacity: 0.6;
}

/* folds */
.page-about .about-folds {
  display: grid;
  gap: 0.7rem;
  margin-top: 0.4rem;
}

.page-about .about-folds .fold {
  background: var(--mist);
  border: 1px solid var(--hair);
  border-radius: var(--r-md);
  padding: 0.2rem 1.1rem;
}

.page-about .about-folds .fold__summary {
  padding: 0.85rem 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--ink);
}

.page-about .about-folds .fold__body {
  padding-bottom: 0.9rem;
}

.page-about .about-folds .fold__body p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--ink-80);
}

/* section head */
.page-about .about-section-head {
  max-width: 60ch;
  margin-bottom: clamp(1.5rem, 4vw, 2.4rem);
}

.page-about .about-section-head .section-title {
  margin: 0.4rem 0 0.8rem;
}

/* facts */
.page-about .about-facts {
  list-style: none;
  margin: 0 0 clamp(1.6rem, 4vw, 2.4rem);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.7rem;
}

.page-about .about-fact {
  background: var(--white);
  border: 1px solid var(--hair);
  border-radius: var(--r-md);
  padding: 1rem 1.05rem 0.95rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.page-about .about-fact__num {
  font-size: clamp(1.7rem, 4.5vw, 2.3rem);
  font-weight: 700;
  line-height: 1;
  color: var(--teal);
  letter-spacing: -0.02em;
}

.page-about .about-fact__label {
  font-family: var(--font-head);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ink-60);
}

/* catalog list */
.page-about .about-catalog {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--hair);
}

.page-about .about-catalog__item {
  padding: 1.05rem 0 1.1rem;
  border-bottom: 1px solid var(--hair-soft);
  display: grid;
  gap: 0.32rem;
}

.page-about .about-catalog__item dt {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.02rem;
  color: var(--ink);
}

.page-about .about-catalog__item dd {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--ink-80);
}

.page-about .about-inline-link {
  margin: clamp(1.3rem, 3vw, 1.9rem) 0 0;
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--ink-80);
}

.page-about .about-inline-link a {
  margin: 0 0.15rem;
}

/* team */
.page-about .about-team {
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.6rem);
}

.page-about .about-tabs .tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--hair);
}

.page-about .about-tabs .tabs__tab {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.88rem;
  padding: 0.5rem 1.05rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--hair);
  background: var(--white);
  color: var(--ink);
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-tabs .tabs__tab[aria-selected="true"] {
  background: var(--teal);
  border-color: var(--teal);
  color: var(--white);
}

.page-about .about-tabs .tabs__tab:focus-visible {
  outline: 2px solid var(--sand);
  outline-offset: 3px;
}

.page-about .about-tabs .tabs__panel {
  padding-top: 1.15rem;
}

.page-about .about-tabs .tabs__panel[hidden] {
  display: none;
}

.page-about .about-tabs .tabs__panel h3 {
  margin: 0 0 0.6rem;
  font-family: var(--font-head);
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--ink);
}

.page-about .about-tabs .tabs__panel p {
  margin: 0 0 0.8rem;
  font-size: 0.95rem;
  line-height: 1.88;
  color: var(--ink-80);
}

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

.page-about .about-collab {
  margin: 1.4rem 0 0;
  padding: 1.05rem 1.15rem;
  background: var(--white);
  border-radius: var(--r-md);
  border-left: 3px solid var(--teal);
  font-size: 0.94rem;
  line-height: 1.88;
  color: var(--ink-80);
}

.page-about .about-team__aside {
  display: grid;
  gap: 1.1rem;
}

.page-about .about-diagram {
  margin: 0;
  background: var(--white);
  border: 1px solid var(--hair);
  border-radius: var(--about-radius);
  padding: 1rem 1rem 0.85rem;
}

.page-about .about-node {
  display: block;
  width: 100%;
  max-width: 340px;
  height: auto;
  margin: 0 auto;
}

.page-about .about-node .node-link {
  fill: none;
  stroke: var(--teal-soft);
  stroke-width: 1.3;
  stroke-dasharray: 4 5;
}

.page-about .about-node text {
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 700;
}

.page-about .about-node .node-sub {
  font-size: 10px;
  font-weight: 400;
  opacity: 0.82;
}

.page-about .about-node .node-core circle {
  fill: var(--teal);
}

.page-about .about-node .node-core text {
  fill: var(--white);
}

.page-about .about-node .node-sat circle {
  fill: var(--mist);
  stroke: var(--teal-soft);
  stroke-width: 1.3;
}

.page-about .about-node .node-sat text {
  fill: var(--ink);
}

/* timeline */
.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-left: 2px solid var(--haze);
  padding-left: 1.2rem;
}

.page-about .about-timeline__row {
  position: relative;
  padding: 0 0 1.5rem;
}

.page-about .about-timeline__row::before {
  content: "";
  position: absolute;
  left: calc(-1.2rem - 6px);
  top: 0.5rem;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--sand);
  box-shadow: 0 0 0 4px var(--mist);
}

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

.page-about .about-timeline__year {
  display: inline-block;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--teal-deep);
  letter-spacing: 0.02em;
  margin-bottom: 0.35rem;
}

.page-about .about-timeline__body h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-head);
  font-size: 1.06rem;
  font-weight: 800;
  color: var(--ink);
}

.page-about .about-timeline__body p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.88;
  color: var(--ink-80);
  max-width: 58ch;
}

/* promise */
.page-about .about-chapter--promise {
  padding-bottom: clamp(1.6rem, 4vw, 2.6rem);
}

.page-about .about-promise {
  position: relative;
  overflow: hidden;
  background: var(--teal-deep);
  border-radius: var(--about-radius);
  padding: clamp(1.5rem, 4vw, 2.8rem);
  color: var(--white);
}

.page-about .about-promise::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 46px 46px;
  pointer-events: none;
}

.page-about .about-promise > * {
  position: relative;
  z-index: 1;
}

.page-about .about-promise .section-title {
  color: var(--white);
  margin: 0.4rem 0 1.1rem;
  max-width: 20ch;
}

.page-about .about-promise__grid {
  display: grid;
  gap: 1.3rem;
}

.page-about .about-promise__lead {
  margin: 0;
  font-size: 1rem;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.86);
  max-width: 50ch;
}

.page-about .about-promise__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.8rem;
}

.page-about .about-promise__list li {
  padding-left: 0.9rem;
  border-left: 2px solid var(--sand);
  font-size: 0.93rem;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.9);
}

.page-about .about-promise__list .mono {
  display: inline-block;
  margin-right: 0.5rem;
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  color: var(--sand);
  text-transform: uppercase;
}

.page-about .about-promise__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.5rem;
}

/* record */
.page-about .about-record {
  display: grid;
  gap: 0.65rem;
  background: var(--ink);
  border-radius: var(--about-radius);
  padding: clamp(1.1rem, 3vw, 1.6rem);
  position: relative;
  overflow: hidden;
}

.page-about .about-record::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 38px 38px;
  pointer-events: none;
}

.page-about .about-record__item {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.25rem 0.9rem;
  padding: 0.72rem 0.9rem;
  border: 1px dashed rgba(255, 255, 255, 0.26);
  border-radius: var(--r-sm);
}

.page-about .about-record__label {
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--sand);
  min-width: 4.8em;
}

.page-about .about-record__value {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.94);
  word-break: break-word;
}

.page-about .about-record__note {
  margin: 0.85rem 0 0;
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--ink-60);
}

/* next */
.page-about .about-next {
  padding: 0 0 clamp(2.6rem, 6vw, 4.2rem);
}

.page-about .about-next__inner {
  border-top: 1px solid var(--hair);
  padding-top: clamp(1.6rem, 4vw, 2.6rem);
  display: grid;
  gap: 1.3rem;
}

.page-about .about-next__lead h2 {
  margin: 0 0 0.5rem;
  font-family: var(--font-head);
  font-size: clamp(1.3rem, 3vw, 1.6rem);
  font-weight: 800;
  color: var(--ink);
}

.page-about .about-next__lead p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.85;
  color: var(--ink-60);
}

.page-about .about-next__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-about .about-next__list a {
  display: inline-block;
  padding: 0.48rem 0.95rem;
  border: 1px solid var(--hair);
  border-radius: var(--r-pill);
  background: var(--white);
  font-family: var(--font-head);
  font-size: 0.83rem;
  font-weight: 700;
  color: var(--teal-deep);
  text-decoration: none;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-next__list a:hover,
.page-about .about-next__list a:focus-visible {
  background: var(--teal);
  border-color: var(--teal);
  color: var(--white);
}

.page-about a:focus-visible,
.page-about button:focus-visible,
.page-about summary:focus-visible {
  outline: 2px solid var(--sand);
  outline-offset: 3px;
}

/* tablet */
@media (min-width: 700px) {
  .page-about .about-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-catalog {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: clamp(1.5rem, 4vw, 2.8rem);
  }
}

/* desktop */
@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }

  .page-about .about-chapter__band img {
    aspect-ratio: 21 / 9;
  }

  .page-about .about-chapter__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
    gap: clamp(2rem, 5vw, 3.6rem);
  }

  .page-about .about-chapter__grid--flip {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }

  .page-about .about-promise__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 2rem;
  }

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

  .page-about .about-timeline {
    padding-left: 1.6rem;
  }

  .page-about .about-timeline__row::before {
    left: calc(-1.6rem - 6px);
  }

  .page-about .about-next__inner {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    align-items: start;
    gap: 2rem;
  }
}
<<<PAGE_CSS_END>>>
<<<END>>>