.page-about {
  --about-text: rgba(243, 235, 221, 0.88);
  --about-dim: rgba(159, 180, 184, 0.94);
  display: block;
  background-image:
    radial-gradient(120% 55% at 100% 0%, rgba(255, 107, 44, 0.08), transparent 58%),
    radial-gradient(90% 45% at 0% 6%, rgba(95, 127, 90, 0.12), transparent 62%);
  background-repeat: no-repeat;
}

.page-about .about-hero {
  position: relative;
  padding: clamp(24px, 4vw, 48px) 0 clamp(36px, 6vw, 72px);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 48px);
  align-items: center;
}

.page-about .about-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-sans);
  font-size: clamp(30px, 5.2vw, 60px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-about .about-hero__lead {
  margin: 18px 0 0;
  max-width: 56ch;
  font-size: clamp(15px, 1.1vw, 17px);
  line-height: 1.85;
  color: var(--about-text);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  margin: 26px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--about-dim);
}

.page-about .about-hero__figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-2);
}

.page-about .about-hero__figure::before {
  content: "";
  position: absolute;
  top: 8px;
  right: 8px;
  width: 34px;
  height: 34px;
  border-top: 1px solid var(--gold);
  border-right: 1px solid var(--gold);
  z-index: 2;
  pointer-events: none;
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
}

.page-about .about-hero__figure .arena-media__caption {
  margin: 0;
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  background: var(--glass-strong);
  font-size: 12px;
  line-height: 1.6;
  color: var(--about-dim);
}

.page-about .about-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  padding-top: clamp(28px, 5vw, 56px);
  padding-bottom: clamp(40px, 7vw, 84px);
}

.page-about .about-index {
  position: relative;
  min-width: 0;
}

.page-about .about-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-index__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  white-space: nowrap;
  font-size: 13px;
  line-height: 1.4;
  color: var(--about-dim);
  text-decoration: none;
  background: var(--glass);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background var(--dur) var(--ease);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--cream);
  border-color: var(--gold);
  background: var(--ink-2);
}

.page-about .about-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--gold);
}

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

.page-about .about-chapter {
  --ch: var(--gold);
  padding-top: clamp(18px, 3vw, 28px);
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: 96px;
}

.page-about .about-chapter + .about-chapter {
  margin-top: clamp(30px, 5vw, 58px);
}

.page-about .about-chapter--moss { --ch: var(--moss); }
.page-about .about-chapter--clay { --ch: var(--clay); }
.page-about .about-chapter--cyan { --ch: var(--cyan); }
.page-about .about-chapter--orange { --ch: var(--orange); }

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

.page-about .about-chapter__num {
  flex: none;
  padding: 3px 7px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ch);
  border: 1px solid var(--ch);
  border-radius: var(--radius-sm);
}

.page-about .about-chapter__title {
  margin: 0;
  font-size: clamp(21px, 2.6vw, 32px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-about .about-chapter__body > p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--about-text);
}

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

.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 10px;
  bottom: 16px;
  width: 1px;
  background: linear-gradient(180deg, var(--ch), rgba(201, 164, 92, 0));
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 22px 30px;
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  box-sizing: border-box;
  width: 11px;
  height: 11px;
  border: 2px solid var(--ch);
  border-radius: 50%;
  background: var(--ink);
}

.page-about .about-timeline__mark {
  display: inline-block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--ch);
}

.page-about .about-timeline__title {
  margin: 0 0 4px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--cream);
}

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

.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 22px 0 0;
  padding: 0;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-figures__cell {
  margin: 0;
  padding: 16px 14px;
  background: var(--ink-2);
}

.page-about .about-figures__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-about .about-figures__num span {
  font-size: 0.6em;
  color: var(--gold);
}

.page-about .about-figures__label {
  display: block;
  margin: 8px 0 0;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--about-dim);
}

.page-about .about-figure {
  margin: 24px 0 0;
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--ch);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--ink-2);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--about-dim);
}

.page-about .about-columns {
  list-style: none;
  margin: 24px 0 18px;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-about .about-columns__item {
  padding: 14px 16px;
  background: var(--ink-2);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-sm);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-columns__item:hover {
  border-color: var(--ch);
  background: var(--ink-3);
}

.page-about .about-columns__name {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  color: var(--cream);
}

.page-about .about-columns__name::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ch);
}

.page-about .about-columns__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--about-dim);
}

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

.page-about .about-versions__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-versions__ver {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--gold);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-versions__row:hover .about-versions__ver,
.page-about .about-versions__row:focus-within .about-versions__ver {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-about .about-versions__name {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--cream);
}

.page-about .about-versions__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--about-dim);
}

.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin-bottom: 4px;
}

.page-about .about-team .about-figure {
  margin-top: 0;
}

.page-about .about-network {
  margin: 22px 0 18px;
  padding: 16px;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-about .about-network__head {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .about-network__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-about .about-network__item {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--about-text);
}

.page-about .about-network__dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  transform: translateY(1px);
}

.page-about .about-network__dot--moss { background: var(--moss); }
.page-about .about-network__dot--clay { background: var(--clay); }
.page-about .about-network__dot--cyan { background: var(--cyan); }

.page-about .about-network__num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--cyan);
}

.page-about .about-proof {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 22px 0 0;
  padding: 0;
}

.page-about .about-proof__item {
  margin: 0;
  padding: 18px 18px 18px 20px;
  background: var(--ink-2);
  border: 1px solid var(--line-soft);
  border-left: 3px solid var(--ch);
  border-radius: var(--radius-sm);
}

.page-about .about-proof__key {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--cyan);
}

.page-about .about-proof__label {
  display: block;
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--about-dim);
}

.page-about .about-quote {
  margin: 24px 0 20px;
  padding: 18px 20px;
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: linear-gradient(90deg, rgba(201, 164, 92, 0.12), rgba(201, 164, 92, 0));
}

.page-about .about-quote p {
  margin: 0;
  font-size: clamp(15px, 1.6vw, 18px);
  font-weight: 600;
  line-height: 1.75;
  color: var(--cream);
}

.page-about .about-next {
  margin-top: clamp(34px, 5vw, 60px);
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(53, 242, 208, 0.08), transparent 58%),
    var(--ink-2);
}

.page-about .about-next__title {
  margin: 10px 0 0;
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 800;
  line-height: 1.3;
  color: var(--cream);
}

.page-about .about-next__text {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--about-text);
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  margin-top: 20px;
}

.page-about .about-next__textlink {
  display: inline-flex;
  align-items: center;
  padding: 8px 2px;
  font-size: 14px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

@media (min-width: 620px) {
  .page-about .about-network__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-about .about-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .about-versions__row {
    grid-template-columns: 84px minmax(0, 1fr);
    align-items: start;
  }

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

@media (min-width: 780px) {
  .page-about .about-team {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    align-items: start;
    gap: 24px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
  }
}

@media (min-width: 960px) {
  .page-about .about-body {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 52px);
  }

  .page-about .about-index {
    position: sticky;
    top: 88px;
    align-self: start;
  }

  .page-about .about-index__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-index__list > li + li {
    margin-top: 4px;
  }

  .page-about .about-index__link {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 4px 10px;
    white-space: normal;
    padding: 10px 12px;
    border-color: transparent;
    border-left: 2px solid var(--line);
    border-radius: 0;
    background: transparent;
  }
}