.page-about .about-hero {
  padding-block: clamp(24px, 4vw, 44px) clamp(28px, 5vw, 56px);
  background:
    radial-gradient(120% 90% at 10% 0%, rgba(14, 91, 90, 0.38), transparent 62%),
    radial-gradient(80% 70% at 100% 10%, rgba(197, 107, 74, 0.14), transparent 60%),
    var(--ink-900);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-about .about-hero h1 {
  margin: 0.4em 0 0.45em;
  font-size: clamp(30px, 4.6vw, 54px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--cream);
  text-wrap: balance;
}

.page-about .about-hero__intro {
  margin: 0;
  max-width: 62ch;
  color: var(--mist);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-about .about-hero__aside {
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(27, 51, 72, 0.78), rgba(13, 36, 56, 0.62));
  clip-path: var(--clip-card);
}

.page-about .about-hero__aside-note {
  margin: 0 0 16px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--pulse);
}

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

.page-about .about-fact {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

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

.page-about .about-fact__num {
  flex: 0 0 auto;
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1;
  color: var(--cream);
}

.page-about .about-fact__label {
  color: var(--mist);
  font-size: 13px;
  line-height: 1.55;
}

.page-about .about-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  padding-block: clamp(32px, 6vw, 72px);
}

.page-about .about-rail {
  padding: 18px 16px;
  border: 1px solid var(--line);
  background: rgba(13, 36, 56, 0.55);
  clip-path: var(--clip-card);
}

.page-about .about-rail__title {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--clay);
}

.page-about .about-rail__list {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-about .about-rail__list::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.7em;
  bottom: 0.7em;
  width: 1px;
  background: var(--line);
}

.page-about .about-rail__link {
  position: relative;
  display: block;
  padding-left: 22px;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.6;
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-about .about-rail__link::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 9px;
  height: 9px;
  background: var(--ink-800);
  border: 1px solid var(--line-strong);
  transform: rotate(45deg);
  transition: background 0.2s ease, border-color 0.2s ease;
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  color: var(--cream);
}

.page-about .about-rail__link[aria-current="true"] {
  color: var(--cream);
}

.page-about .about-rail__link[aria-current="true"]::before {
  background: var(--clay);
  border-color: var(--clay);
}

.page-about .about-section {
  scroll-margin-top: 110px;
  padding-block: clamp(26px, 3.6vw, 40px);
  border-top: 1px solid var(--line);
}

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

.page-about .about-section__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.page-about .about-section__num {
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--clay);
}

.page-about .about-section h2 {
  margin: 0;
  font-size: clamp(21px, 2.8vw, 32px);
  line-height: 1.32;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-about .about-text {
  margin: 0 0 14px;
  max-width: 68ch;
  color: var(--mist);
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.85;
}

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

.page-about .about-text--gap {
  margin-top: 20px;
}

.page-about .about-link {
  color: var(--pulse);
  text-decoration: none;
  border-bottom: 1px solid rgba(55, 242, 196, 0.45);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.page-about .about-link:hover,
.page-about .about-link:focus-visible {
  color: var(--cream);
  border-bottom-color: var(--signal);
}

.page-about .about-media {
  margin: clamp(20px, 3vw, 28px) 0 0;
}

.page-about .about-nodes {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-node {
  position: relative;
  padding: 0 0 28px 28px;
  border-left: 1px solid var(--line-strong);
}

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

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 5px;
  width: 9px;
  height: 9px;
  background: var(--ink-900);
  border: 1px solid var(--clay);
  transform: rotate(45deg);
}

.page-about .about-node__year {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--clay);
}

.page-about .about-node__title {
  margin: 0 0 6px;
  font-size: 17px;
  line-height: 1.5;
  font-weight: 600;
  color: var(--cream);
}

.page-about .about-node__text {
  margin: 0;
  max-width: 62ch;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-team {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.page-about .about-detail {
  padding: 14px 18px;
  border: 1px solid var(--line);
  background: rgba(13, 36, 56, 0.62);
  clip-path: var(--clip-card);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.page-about .about-detail:hover,
.page-about .about-detail[open] {
  border-color: var(--line-strong);
  background: rgba(27, 51, 72, 0.72);
}

.page-about .about-detail summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  list-style: none;
  color: var(--cream);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
}

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

.page-about .about-detail summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--pulse);
}

.page-about .about-detail[open] summary::after {
  content: "–";
  color: var(--signal);
}

.page-about .about-detail p {
  margin: 10px 0 0;
  max-width: 64ch;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-partners {
  display: grid;
  gap: 14px;
  margin-top: 20px;
}

.page-about .about-partner {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--moss);
  background: rgba(27, 51, 72, 0.45);
}

.page-about .about-partner__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 600;
  color: var(--cream);
  line-height: 1.5;
}

.page-about .about-partner__text {
  margin: 0;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.75;
}

.page-about .about-contact {
  display: grid;
  gap: 16px;
  margin-top: clamp(20px, 3vw, 28px);
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--line-strong);
  background: linear-gradient(160deg, rgba(14, 91, 90, 0.38), rgba(7, 26, 43, 0.88));
  clip-path: var(--clip-card);
}

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

.page-about .about-contact__label {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--pulse);
}

.page-about .about-contact__value {
  display: block;
  color: var(--cream);
  font-size: 15px;
  line-height: 1.7;
  overflow-wrap: anywhere;
}

.page-about .about-contact .copy-btn {
  margin-top: 10px;
}

@media (min-width: 720px) {
  .page-about .about-partners {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-about .about-contact__item--wide {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-about .about-shell {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: clamp(36px, 5vw, 72px);
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: 24px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-rail__link,
  .page-about .about-rail__link::before,
  .page-about .about-detail,
  .page-about .about-link {
    transition: none;
  }
}