.page-about {
  --about-rail: 176px;
  --about-gap: clamp(24px, 4vw, 56px);
  position: relative;
  overflow-x: clip;
  color: var(--paper);
}

.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 22px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-about .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--gold-lit);
  border-bottom-color: var(--gold);
}

.page-about .about-hero {
  position: relative;
  padding: clamp(24px, 4vw, 44px) 0 clamp(44px, 7vw, 92px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 100%;
  opacity: 0.28;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 88%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 88%);
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.page-about .about-hero__lead {
  position: relative;
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(34px, 5.2vw, 64px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--gold-lit);
  text-shadow: 0 0 26px rgba(216, 166, 74, 0.28);
}

.page-about .about-hero__dek {
  max-width: 34em;
  margin: 22px 0 0;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.9;
  color: rgba(233, 227, 213, 0.84);
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 0;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__facts li {
  margin-right: 16px;
  padding: 6px 16px 6px 0;
  border-right: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-about .about-hero__facts li:last-child {
  margin-right: 0;
  padding-right: 0;
  border-right: 0;
}

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

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

.page-about .about-figure figcaption {
  padding: 12px 16px;
  border-top: 2px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-about .about-figure--hero img {
  aspect-ratio: 16 / 9;
}

.page-about .about-figure--wide {
  margin-top: clamp(26px, 4vw, 40px);
}

.page-about .about-figure--wide img {
  aspect-ratio: 2 / 1;
}

.page-about .about-figure--team {
  margin-top: clamp(26px, 4vw, 36px);
}

.page-about .about-figure--team img {
  aspect-ratio: 3 / 2;
}

.page-about .about-block {
  padding: clamp(44px, 6.5vw, 84px) 0;
  border-bottom: 1px solid rgba(143, 163, 170, 0.14);
}

.page-about .about-block--last {
  border-bottom: 0;
}

.page-about .about-block__grid {
  display: grid;
  gap: var(--about-gap);
}

.page-about .about-rail {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-about .about-rail__num {
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  color: var(--gold);
  letter-spacing: 0.06em;
}

.page-about .about-rail__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--mist);
}

.page-about .about-h2 {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-size: clamp(25px, 3.2vw, 40px);
  line-height: 1.28;
  color: var(--paper);
}

.page-about .about-block__body > p {
  max-width: 62ch;
  margin: 0 0 18px;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.9;
  color: rgba(233, 227, 213, 0.86);
}

.page-about .about-block__linkline {
  margin-top: 26px;
}

.page-about .swatches {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(148px, 1fr));
  gap: 12px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .swatch {
  border: 2px solid var(--line);
  background: rgba(11, 46, 51, 0.55);
  padding-bottom: 12px;
  cursor: default;
  transition: border-color 0.16s ease, box-shadow 0.16s ease;
}

.page-about .swatch:hover,
.page-about .swatch:focus-visible {
  border-color: var(--line-gold);
  box-shadow: 4px 4px 0 rgba(216, 166, 74, 0.2);
  outline: none;
}

.page-about .swatch__chip {
  display: block;
  height: 54px;
  background: var(--sw);
  border-bottom: 2px solid rgba(0, 0, 0, 0.4);
}

.page-about .swatch__name {
  display: block;
  margin: 10px 12px 0;
  font-size: 13px;
  font-weight: 600;
  color: var(--paper);
}

.page-about .swatch__use {
  display: block;
  margin: 5px 12px 0;
  font-size: 12px;
  line-height: 1.55;
  color: var(--mist);
}

.page-about .swatch__hex {
  display: block;
  margin: 7px 12px 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-about .swatch--ink { --sw: #061826; }
.page-about .swatch--gold { --sw: #D8A64A; }
.page-about .swatch--lit { --sw: #F2D18B; }
.page-about .swatch--coral { --sw: #E26D5A; }
.page-about .swatch--celadon { --sw: #7FB7A3; }
.page-about .swatch--indigo { --sw: #24204A; }

.page-about .entries {
  display: grid;
  gap: 14px;
  margin: 30px 0 26px;
  padding: 0;
  list-style: none;
}

.page-about .entry {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 18px 18px 20px;
  border: 2px solid var(--line);
  background: linear-gradient(158deg, rgba(36, 32, 74, 0.55), rgba(6, 24, 38, 0.22));
  transition: border-color 0.16s ease;
}

.page-about .entry:nth-child(2) {
  background: linear-gradient(158deg, rgba(11, 46, 51, 0.78), rgba(6, 24, 38, 0.22));
}

.page-about .entry:nth-child(3) {
  background: linear-gradient(158deg, rgba(6, 24, 38, 0.85), rgba(36, 32, 74, 0.28));
}

.page-about .entry:nth-child(4) {
  background: linear-gradient(158deg, rgba(90, 31, 43, 0.52), rgba(6, 24, 38, 0.24));
}

.page-about .entry:hover {
  border-color: var(--line-gold);
}

.page-about .entry__num {
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1.2;
  color: var(--gold);
  letter-spacing: 0.04em;
}

.page-about .entry h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.35;
  color: var(--paper);
}

.page-about .entry p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(233, 227, 213, 0.8);
}

.page-about .timeline {
  position: relative;
  margin: 32px 0 0;
  padding: 0 0 0 27px;
  list-style: none;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(216, 166, 74, 0.12));
}

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

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

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 8px;
  width: 12px;
  height: 12px;
  background: var(--ink);
  border: 2px solid var(--gold);
  transform: rotate(45deg);
}

.page-about .timeline__year {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.22em;
  color: var(--gold-lit);
}

.page-about .timeline__card {
  padding: 18px 20px;
  border: 2px solid var(--line);
  background: rgba(11, 46, 51, 0.62);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.35);
  transition: border-color 0.16s ease, box-shadow 0.16s ease;
}

.page-about .timeline__item:hover .timeline__card,
.page-about .timeline__item:focus-within .timeline__card {
  border-color: var(--line-gold);
  box-shadow: 6px 6px 0 rgba(216, 166, 74, 0.2);
}

.page-about .timeline__card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.35;
  color: var(--paper);
}

.page-about .timeline__sum {
  max-height: 220px;
  margin: 0;
  overflow: hidden;
  font-size: 14px;
  line-height: 1.85;
  color: rgba(233, 227, 213, 0.8);
  transition: max-height 0.26s ease, opacity 0.26s ease;
}

.page-about .figures {
  display: grid;
  gap: 0;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--line-gold);
}

.page-about .figure-item {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .figure-item__num {
  font-family: var(--font-display);
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1;
  color: var(--gold-lit);
}

.page-about .figure-item__unit {
  font-family: var(--font-body);
  font-size: 0.5em;
  color: var(--gold);
  margin-left: 2px;
}

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

.page-about .about-cta {
  padding: clamp(40px, 6vw, 76px) 0 clamp(56px, 8vw, 96px);
}

.page-about .about-cta__box {
  padding: clamp(26px, 4vw, 48px);
  border: 2px solid var(--line-gold);
  background: linear-gradient(135deg, rgba(36, 32, 74, 0.82), rgba(11, 46, 51, 0.62));
  box-shadow: var(--shadow-hard);
}

.page-about .about-cta__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 36px);
  line-height: 1.3;
  color: var(--paper);
}

.page-about .about-cta__text {
  max-width: 52ch;
  margin: 0 0 26px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(233, 227, 213, 0.82);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 640px) {
  .page-about .figures {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 28px;
  }
}

@media (min-width: 760px) {
  .page-about .entries {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .entry:nth-child(even) {
    margin-top: 22px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
  }

  .page-about .about-hero__lead {
    padding-left: 40px;
  }

  .page-about .about-hero__lead::before {
    content: "DEEP SEA · CAISHEN · EST. 2019";
    position: absolute;
    left: 0;
    top: 6px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.26em;
    color: var(--gold);
    opacity: 0.72;
    writing-mode: vertical-rl;
  }
}

@media (min-width: 960px) {
  .page-about .about-block__grid {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: clamp(36px, 5vw, 72px);
  }

  .page-about .about-rail {
    display: block;
    position: sticky;
    top: calc(var(--head-h) + 36px);
    align-self: start;
  }

  .page-about .about-rail__label {
    display: block;
    margin-top: 16px;
    padding: 16px 0 0 14px;
    border-left: 1px solid var(--line-gold);
    writing-mode: vertical-rl;
    letter-spacing: 0.42em;
  }
}

@media (hover: hover) and (min-width: 900px) {
  .page-about .timeline__sum {
    max-height: 0;
    opacity: 0;
  }

  .page-about .timeline__item:hover .timeline__sum,
  .page-about .timeline__item:focus-within .timeline__sum,
  .page-about .timeline__item:focus .timeline__sum {
    max-height: 220px;
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .swatch,
  .page-about .entry,
  .page-about .timeline__card,
  .page-about .timeline__sum,
  .page-about .breadcrumb a {
    transition: none;
  }
}