.page-about {
  overflow-x: clip;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
}

.page-about a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 227, 193, .35);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + 24px) 0 0;
  background: var(--ink);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -18%;
  right: -28%;
  width: 118%;
  height: 78%;
  background: var(--pine);
  transform: rotate(-9deg);
  transform-origin: top right;
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "90′";
  position: absolute;
  top: 6px;
  right: 8px;
  font-family: var(--font-mono);
  font-size: clamp(64px, 18vw, 220px);
  font-weight: 600;
  line-height: 1;
  color: rgba(233, 228, 216, .04);
  letter-spacing: -.04em;
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 20px;
  padding-bottom: clamp(24px, 4vw, 44px);
}

.page-about .about-hero__crumb .breadcrumb__link {
  color: var(--rock);
  border-bottom: 0;
}

.page-about .about-hero__crumb .breadcrumb__sep,
.page-about .about-hero__crumb [aria-current="page"] {
  color: var(--rock);
  font-size: 12px;
  letter-spacing: .1em;
}

.page-about .about-hero__rail {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
}

.page-about .about-hero__stamp {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--clay);
  border: 1px solid var(--clay);
  padding: 4px 8px;
}

.page-about .about-hero__railtext {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--rock);
}

.page-about .about-hero__kicker {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: .3em;
  color: var(--mint);
}

.page-about .about-hero__title {
  margin: 0;
  font-size: clamp(30px, 6.6vw, 66px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -.035em;
  color: var(--cold);
}

.page-about .about-hero__lede {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--paper);
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 26px 0 0;
  padding: 16px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .about-hero__facts li {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--rock);
}

.page-about .about-hero__facts strong {
  display: inline-block;
  margin-right: 6px;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: -.02em;
  color: var(--cold);
}

.page-about .about-hero__figure {
  position: relative;
  z-index: 1;
  margin: 0;
  max-width: 820px;
  border-left: 0;
  border-right: 0;
}

/* ---------- 图片通用 ---------- */
.page-about .about-figure {
  margin: clamp(18px, 3vw, 28px) 0;
  border: 2px solid var(--line);
  background: var(--ink);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, .42);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: grayscale(.3) contrast(1.05);
}

.page-about .about-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--rock);
}

/* ---------- 主体布局 ---------- */
.page-about .about-body {
  padding: clamp(30px, 6vw, 76px) 0;
  background: var(--pine);
  border-top: 2px solid var(--line);
}

.page-about .about-layout {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.page-about .about-index {
  border-top: 2px solid var(--clay);
  padding-top: 12px;
}

.page-about .about-index__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--rock);
}

.page-about .about-index__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

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

.page-about .about-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  border-bottom: 0;
  font-size: 13px;
  color: var(--paper);
  padding: 3px 0;
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--mint);
  border-bottom-color: transparent;
}

.page-about .about-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--clay);
}

/* ---------- 章节 ---------- */
.page-about .about-chapter {
  padding: clamp(24px, 4vw, 42px) 0;
  border-top: 1px solid var(--line-soft);
}

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

.page-about .about-chapter__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--clay);
}

.page-about .about-chapter__title {
  margin: 8px 0 16px;
  font-size: clamp(22px, 3.4vw, 34px);
  font-weight: 900;
  line-height: 1.22;
  letter-spacing: -.025em;
  color: var(--cold);
}

.page-about .about-chapter p {
  margin: 0 0 14px;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--paper);
}

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

/* ---------- 时间线 ---------- */
.page-about .about-timeline__jumps {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 4px 0 22px;
}

.page-about .about-timeline__jump {
  border: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--mint);
}

.page-about .about-timeline__jump:hover,
.page-about .about-timeline__jump:focus-visible {
  border-color: var(--mint);
  background: rgba(79, 227, 193, .08);
  color: var(--cold);
}

.page-about .about-timeline {
  position: relative;
  margin-top: 4px;
  padding-left: 26px;
  border-left: 3px solid var(--moss);
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: 28px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -35px;
  top: 10px;
  width: 11px;
  height: 11px;
  background: var(--clay);
  border: 2px solid var(--pine);
}

.page-about .about-timeline__item--v4 {
  padding-left: 14px;
  border-left: 2px solid var(--clay);
  background: linear-gradient(90deg, rgba(180, 105, 74, .16), transparent 76%);
}

.page-about .about-timeline__item--v4::before {
  background: var(--mint);
  left: -37px;
}

.page-about .about-timeline__year {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: clamp(30px, 7vw, 54px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--cold);
}

.page-about .about-timeline__sub {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--clay);
}

.page-about .about-timeline__figure {
  margin: 8px 0 28px;
}

/* ---------- 团队表 ---------- */
.page-about .about-team__figure {
  margin-top: 20px;
}

.page-about .about-table-wrap {
  margin-top: 20px;
  border: 2px solid var(--line);
  overflow-x: auto;
}

.page-about .about-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-about .about-table__caption {
  padding: 10px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--rock);
  border-bottom: 1px solid var(--line);
}

.page-about .about-table thead th {
  background: var(--pine-deep);
  color: var(--cold);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .16em;
  text-align: left;
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-table tbody th {
  text-align: left;
  padding: 13px 14px;
  font-weight: 800;
  color: var(--cold);
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-table tbody td {
  padding: 13px 14px;
  line-height: 1.7;
  color: var(--paper);
  border-bottom: 1px solid var(--line-soft);
  vertical-align: top;
}

.page-about .about-table tbody tr:nth-child(odd) td {
  background: rgba(11, 18, 16, .35);
}

.page-about .about-table tbody tr:last-child th,
.page-about .about-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-about .about-table th:first-child,
.page-about .about-table td:first-child {
  position: sticky;
  left: 0;
  z-index: 2;
  min-width: 96px;
  background: var(--pine-deep);
  box-shadow: 1px 0 0 var(--line);
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  padding: clamp(30px, 5vw, 64px) 0;
  background: var(--ink);
  border-top: 2px solid var(--line);
}

.page-about .about-next__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 20px;
}

.page-about .about-next__title {
  margin: 0;
  font-size: clamp(20px, 3vw, 28px);
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--cold);
}

.page-about .about-backtop {
  border-bottom: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--rock);
}

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

.page-about .about-next__grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-next__item {
  display: grid;
  gap: 4px;
  padding: 18px 16px;
  background: var(--pine-deep);
  border-bottom: 0;
  color: var(--paper);
}

.page-about .about-next__item:hover,
.page-about .about-next__item:focus-visible {
  background: var(--moss);
  color: var(--cold);
}

.page-about .about-next__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--clay);
}

.page-about .about-next__name {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: inherit;
}

.page-about .about-next__desc {
  font-size: 13px;
  line-height: 1.7;
  color: var(--paper);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-figure {
    box-shadow: var(--shadow-hard);
  }

  .page-about .about-hero__figure {
    max-width: 820px;
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 200px minmax(0, 1fr);
    grid-template-areas:
      "crumb crumb"
      "rail body";
    align-items: start;
    column-gap: clamp(24px, 4vw, 56px);
  }

  .page-about .about-hero__crumb {
    grid-area: crumb;
  }

  .page-about .about-hero__rail {
    grid-area: rail;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding-top: 8px;
    border-top: 2px solid var(--line);
  }

  .page-about .about-hero__body {
    grid-area: body;
  }

  .page-about .about-hero__figure {
    margin-left: auto;
    margin-right: 0;
  }

  .page-about .about-layout {
    grid-template-columns: 220px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-index {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-about .about-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }

  .page-about .about-index__link {
    width: 100%;
    padding: 7px 0;
    border-top: 1px solid var(--line-soft);
  }

  .page-about .about-table {
    min-width: 100%;
  }

  .page-about .about-next__item {
    padding: 24px 22px;
  }
}
<<<END>>>