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

.page-about .about-hero {
  padding: clamp(24px, 4vw, 52px) 0 clamp(28px, 5vw, 60px);
}

.page-about .about-hero__inner {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
  align-items: end;
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(32px, 6.2vw, 68px);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.page-about .about-hero__title em {
  font-style: normal;
  font-weight: 800;
  color: var(--warm-gold-600);
}

.page-about .about-hero__lede {
  margin: 20px 0 0;
  max-width: 46em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
}

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

.page-about .about-hero__figures {
  border-top: 2px solid var(--ink-green-900);
}

.page-about .figure-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: baseline;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .figure-row__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 4.2vw, 40px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--ink-green-900);
}

.page-about .figure-row__unit {
  font-size: 0.5em;
  font-weight: 500;
  color: var(--warm-gold-600);
  margin-left: 2px;
}

.page-about .figure-row__label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-index {
  background: var(--paper-deep);
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.page-about .about-index__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 0;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-index__label {
  flex: none;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--warm-gold-600);
  text-transform: uppercase;
}

.page-about .about-index__list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-index__link {
  display: inline-block;
  padding: 6px 11px;
  border: 1px solid transparent;
  border-radius: var(--radius-s);
  font-size: 13px;
  color: var(--ink-soft);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.page-about .about-index__link:hover {
  border-color: var(--warm-gold-600);
  color: var(--ink-green-900);
}

.page-about .about-index__link[aria-current="true"] {
  background: var(--ink-green-900);
  border-color: var(--ink-green-900);
  color: var(--warm-gold-300);
}

.page-about .chapter {
  padding: clamp(38px, 6vw, 84px) 0;
  border-bottom: 1px solid var(--line);
}

.page-about .chapter__inner {
  display: grid;
  gap: clamp(22px, 3.4vw, 44px);
}

.page-about .chapter__aside {
  align-self: start;
}

.page-about .chapter__aside::before {
  content: "";
  display: block;
  width: 56px;
  height: 4px;
  margin-bottom: 16px;
  background: var(--warm-gold-600);
}

.page-about .chapter__num {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(46px, 8vw, 92px);
  line-height: 0.84;
  letter-spacing: -0.04em;
  color: var(--warm-gold-300);
}

.page-about .chapter__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(23px, 3.2vw, 38px);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--ink-green-900);
}

.page-about .chapter__body p {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-about .chapter__intro {
  margin: 0 0 22px;
  font-size: 17px;
  color: var(--ink-green-900);
}

.page-about .chapter__note {
  margin: 22px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--warm-gold-600);
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .chapter__note a {
  color: var(--ink-green-900);
  text-decoration: none;
  border-bottom: 1px solid var(--warm-gold-600);
  transition: color var(--dur) var(--ease);
}

.page-about .chapter__note a:hover {
  color: var(--warm-gold-600);
}

.page-about .about-figure {
  margin: 26px 0 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-l);
  background: var(--paper-deep);
}

.page-about .about-figure figcaption {
  margin-top: 9px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .side-facts {
  margin: 26px 0 0;
  padding: 0;
  border-top: 2px solid var(--ink-green-900);
}

.page-about .side-facts div {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .side-facts dt {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 21px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--ink-green-900);
  white-space: nowrap;
}

.page-about .side-facts dd {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

.page-about .stat-strip {
  display: grid;
  gap: 1px;
  margin: 0 0 22px;
  background: var(--line-strong);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-about .stat-strip__cell {
  padding: 14px 16px;
  background: var(--surface-raised);
}

.page-about .stat-strip__cell strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 22px;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink-green-900);
}

.page-about .stat-strip__cell span {
  display: block;
  margin-top: 4px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .dossier {
  display: grid;
  gap: 10px;
}

.page-about .dossier__row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 16px 16px 16px 14px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cool-slate-600);
  border-radius: var(--radius-m);
  background: var(--surface-raised);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .dossier__row:hover,
.page-about .dossier__row:focus-within {
  border-left-color: var(--ember-orange);
  box-shadow: var(--shadow-1);
}

.page-about .dossier__no {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--warm-gold-600);
  padding-top: 4px;
}

.page-about .dossier__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.4;
  color: var(--ink-green-900);
}

.page-about .dossier__summary {
  margin: 6px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-about .dossier__more {
  display: grid;
  grid-template-rows: 1fr;
  transition: grid-template-rows 200ms var(--ease);
}

.page-about .dossier__more > div {
  overflow: hidden;
}

.page-about .dossier__more p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .dossier__link {
  display: inline-block;
  margin-top: 10px;
  font-size: 13px;
  color: var(--ink-green-900);
  text-decoration: none;
  border-bottom: 1px solid var(--warm-gold-600);
  transition: color var(--dur) var(--ease);
}

.page-about .dossier__link:hover {
  color: var(--warm-gold-600);
}

.page-about .rhythm {
  display: grid;
  gap: 16px;
}

.page-about .rhythm__col {
  padding: 20px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-l);
  background: var(--paper-cream);
}

.page-about .rhythm__col--ink {
  background: var(--ink-green-900);
  border-color: var(--ink-green-900);
  color: #ffffff;
}

.page-about .rhythm__head {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 22px;
  letter-spacing: -0.01em;
}

.page-about .rhythm__col--ink .rhythm__head {
  color: var(--warm-gold-300);
}

.page-about .rhythm__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .rhythm__list li {
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.page-about .rhythm__col--ink .rhythm__list li {
  border-top-color: rgba(255, 255, 255, 0.16);
}

.page-about .rhythm__tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--warm-gold-600);
}

.page-about .rhythm__col--ink .rhythm__tag {
  color: var(--warm-gold-300);
}

.page-about .rhythm__list p {
  margin: 6px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
}

.page-about .rhythm__col--ink .rhythm__list p {
  color: rgba(255, 255, 255, 0.86);
}

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

.page-about .network__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  transition: background-color var(--dur) var(--ease);
}

.page-about .network__item:hover {
  background: var(--cool-slate-050);
}

.page-about .network__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--warm-gold-600);
  border-radius: 50%;
  font-size: 12px;
  color: var(--warm-gold-600);
}

.page-about .network__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  line-height: 1.45;
  color: var(--ink-green-900);
}

.page-about .network__item p {
  margin: 6px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-about .chapter--service {
  background: var(--ink-green-900);
  border-bottom: none;
  color: #ffffff;
}

.page-about .chapter--service .chapter__aside::before {
  background: var(--warm-gold-300);
}

.page-about .chapter--service .chapter__num {
  color: rgba(242, 209, 139, 0.32);
}

.page-about .chapter--service .chapter__title {
  color: #ffffff;
}

.page-about .service {
  display: grid;
  gap: 22px;
}

.page-about .service__item {
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
}

.page-about .service__item:first-child {
  padding-top: 0;
  border-top: none;
}

.page-about .service__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.45;
  color: var(--warm-gold-300);
}

.page-about .service__item p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.88);
}

.page-about .service__contact {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 12px;
}

.page-about .service__mail {
  font-family: var(--font-mono);
  font-size: 14px;
  color: #ffffff;
  text-decoration: none;
  border-bottom: 1px solid var(--warm-gold-300);
  transition: color var(--dur) var(--ease);
}

.page-about .service__mail:hover {
  color: var(--warm-gold-300);
}

.page-about .service__status {
  font-size: 12px;
  color: var(--warm-gold-300);
}

.page-about .service .copy-btn {
  padding: 5px 12px;
  border: 1px solid rgba(242, 209, 139, 0.6);
  border-radius: var(--radius-s);
  background: transparent;
  color: var(--warm-gold-300);
  font-family: var(--font-body);
  font-size: 12px;
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .service .copy-btn:hover {
  background: rgba(242, 209, 139, 0.14);
  border-color: var(--warm-gold-300);
}

.page-about .about-close {
  padding: clamp(32px, 5vw, 66px) 0;
  background: var(--warm-gold-300);
  border-top: 1px solid var(--warm-gold-600);
}

.page-about .about-close__inner {
  display: grid;
  gap: 22px;
  align-items: center;
}

.page-about .about-close__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.24;
  letter-spacing: -0.02em;
  color: var(--ink-green-900);
}

.page-about .about-close__text {
  margin: 12px 0 0;
  max-width: 44em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-green-700);
}

.page-about .about-close__actions {
  gap: 12px;
}

.page-about .about-close .btn--ghost {
  border-color: var(--ink-green-900);
  color: var(--ink-green-900);
}

.page-about .about-close .btn--ghost:hover {
  background: var(--ink-green-900);
  color: var(--warm-gold-300);
}

@media (min-width: 640px) {
  .page-about .stat-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .service {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 26px 32px;
  }

  .page-about .service__item:nth-child(2) {
    padding-top: 0;
    border-top: none;
  }
}

@media (min-width: 760px) {
  .page-about .rhythm {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-close__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 32px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
  }

  .page-about .chapter__inner {
    grid-template-columns: minmax(0, 3fr) minmax(0, 8fr);
  }

  .page-about .chapter__aside {
    position: sticky;
    top: 96px;
  }

  .page-about .dossier__more {
    grid-template-rows: 0fr;
  }

  .page-about .dossier__row:hover .dossier__more,
  .page-about .dossier__row:focus-within .dossier__more {
    grid-template-rows: 1fr;
  }

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

@media (min-width: 1100px) {
  .page-about .chapter__inner {
    gap: 56px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .dossier__more {
    transition: none;
  }

  .page-about .dossier__row,
  .page-about .about-index__link,
  .page-about .network__item,
  .page-about .service .copy-btn {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>