.page-about {
  --about-gap: clamp(20px, 4vw, 44px);
  --about-panel-pad: clamp(20px, 4vw, 44px);
  background: var(--ink);
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border-bottom: 1px solid var(--line);
  padding-block: clamp(28px, 5vw, 56px) clamp(28px, 4vw, 44px);
}

.page-about .about-hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.page-about .about-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.34;
  filter: saturate(0.65) contrast(1.08);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(120% 90% at 82% 6%, rgba(59, 242, 208, 0.20), transparent 58%),
    radial-gradient(90% 70% at 6% 102%, rgba(255, 138, 61, 0.16), transparent 60%),
    linear-gradient(180deg, rgba(6, 26, 22, 0.42) 0%, rgba(6, 26, 22, 0.9) 62%, var(--ink) 100%);
}

.page-about .about-hero__ghost {
  position: absolute;
  right: clamp(-12px, 1vw, 24px);
  bottom: clamp(-30px, -2vw, -6px);
  z-index: -1;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(110px, 26vw, 320px);
  line-height: 0.72;
  letter-spacing: -0.03em;
  color: var(--text);
  opacity: 0.05;
  pointer-events: none;
  user-select: none;
}

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

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(32px, 6.2vw, 82px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  max-width: 16ch;
  color: var(--text);
}

.page-about .about-hero__lead {
  margin-top: 20px;
  max-width: 62ch;
  color: var(--muted);
}

.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(28px, 5vw, 52px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
  background: var(--line);
}

.page-about .about-figures__item {
  background: rgba(6, 26, 22, 0.72);
  padding: 14px 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-figures__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-figures__num em {
  font-style: normal;
  font-size: 0.55em;
  color: var(--muted);
  margin-left: 2px;
}

.page-about .about-figures__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

/* ---------- 主体骨架 ---------- */
.page-about .about-body {
  display: grid;
  gap: var(--about-gap);
  padding-block: clamp(32px, 6vw, 80px);
}

.page-about .about-rail__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
}

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

.page-about .about-rail__item {
  flex: 0 0 auto;
}

.page-about .about-rail__link {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  text-decoration: none;
  color: var(--muted);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-rail__year {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .about-rail__name {
  font-size: 14px;
  white-space: nowrap;
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  color: var(--text);
  border-color: var(--orange);
  outline: none;
}

.page-about .about-stack {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
  min-width: 0;
}

/* ---------- 画板 ---------- */
.page-about .about-panel {
  position: relative;
  overflow: hidden;
  background: var(--ink-2);
  border: 1px solid var(--line);
  padding: var(--about-panel-pad);
  scroll-margin-top: var(--anchor-offset);
}

.page-about .about-panel__watermark {
  position: absolute;
  top: -0.14em;
  right: -0.02em;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(90px, 20vw, 210px);
  line-height: 0.8;
  color: var(--text);
  opacity: 0.05;
  pointer-events: none;
  user-select: none;
}

.page-about .about-panel__title {
  position: relative;
  margin: 10px 0 18px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(24px, 3.6vw, 40px);
  line-height: 1.18;
  letter-spacing: 0;
  color: var(--text);
  max-width: 20ch;
}

.page-about .fb-text {
  max-width: 66ch;
  color: var(--muted);
  line-height: 1.78;
}

.page-about .about-text--tight {
  margin-top: 22px;
}

.page-about .about-list {
  margin-top: 22px;
  display: grid;
  gap: 12px;
}

.page-about .about-list li {
  padding-left: 18px;
  border-left: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: clamp(18px, 3vw, 32px);
  margin-top: 26px;
}

.page-about .crew-map {
  width: 100%;
  height: auto;
  display: block;
  max-width: 520px;
}

.page-about .crew-map__hub {
  fill: rgba(59, 242, 208, 0.10);
  stroke: var(--cyan);
  stroke-width: 1;
}

.page-about .crew-map__hubtext {
  fill: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  letter-spacing: 0.04em;
}

.page-about .crew-map__wire {
  stroke: var(--line);
  stroke-width: 1;
}

.page-about .crew-map__node {
  fill: rgba(6, 26, 22, 0.85);
  stroke: var(--line);
  stroke-width: 1;
}

.page-about .crew-map__label {
  fill: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
}

.page-about .crew-map__sub {
  fill: var(--muted);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
}

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

.page-about .crew-node {
  background: var(--ink);
  padding: 16px 18px;
  transition: background 0.24s ease, box-shadow 0.24s ease;
}

.page-about .crew-node:hover,
.page-about .crew-node:focus-visible {
  background: #08211C;
  box-shadow: inset 3px 0 0 var(--orange);
  outline: none;
}

.page-about .crew-node__name {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-about .crew-node__note {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 48ch;
}

.page-about .crew-node:hover .crew-node__note,
.page-about .crew-node:focus-visible .crew-node__note {
  color: #C6DCD2;
}

/* ---------- 图像框 ---------- */
.page-about .about-figure {
  margin: 26px 0 0;
}

.page-about .about-figure__frame {
  border: 1px solid var(--line);
  background: var(--ink-3);
}

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

.page-about .about-figure .fb-media__caption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

/* ---------- 时间线 ---------- */
.page-about .about-split {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  margin-top: 24px;
}

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

.page-about .about-tabs .fb-tabs__tab {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-about .about-timeline {
  margin: 0;
  padding: 0 0 0 20px;
  list-style: none;
  border-left: 1px solid var(--line);
  display: grid;
  gap: 24px;
}

.page-about .about-timeline__item {
  position: relative;
  display: grid;
  gap: 6px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 8px;
  width: 8px;
  height: 8px;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(59, 242, 208, 0.14);
}

.page-about .about-timeline__year {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-about .about-timeline__head {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  color: var(--text);
}

.page-about .about-timeline__body p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 52ch;
}

/* ---------- 覆盖数据 ---------- */
.page-about .about-stats {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-stats__item {
  background: var(--ink);
  padding: 16px 18px;
  display: grid;
  gap: 4px;
}

.page-about .about-stats__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-stats__num em {
  font-style: normal;
  font-size: 0.5em;
  color: var(--muted);
  margin-left: 2px;
}

.page-about .about-stats__name {
  font-size: 14px;
  color: var(--text);
  letter-spacing: 0.02em;
}

.page-about .about-stats__desc {
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 共建 ---------- */
.page-about .about-notes {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-about .about-notes__item {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.page-about .about-notes__item:last-child {
  border-bottom: 1px solid var(--line);
}

.page-about .about-notes__index {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--orange);
  padding-top: 3px;
}

.page-about .about-notes__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--text);
  max-width: 58ch;
}

/* ---------- 节奏 ---------- */
.page-about .about-rhythm {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-about .about-rhythm__item {
  display: grid;
  gap: 6px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  background: rgba(6, 26, 22, 0.6);
}

.page-about .about-rhythm__cycle {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

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

/* ---------- 结尾 ---------- */
.page-about .about-next {
  padding: clamp(22px, 4vw, 40px);
  border: 1px solid var(--line);
  background:
    radial-gradient(90% 120% at 92% 0%, rgba(255, 138, 61, 0.16), transparent 62%),
    var(--ink-2);
}

.page-about .about-next__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.2;
  color: var(--text);
}

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

.page-about .about-next__note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 60ch;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-about .about-figures {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 860px) {
  .page-about .about-team {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-figures {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    align-items: start;
  }

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

@media (min-width: 980px) {
  .page-about .about-body {
    grid-template-columns: minmax(170px, 210px) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: 92px;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-rail__link {
    border: none;
    border-left: 2px solid var(--line);
    padding: 11px 0 11px 14px;
    background: transparent;
  }

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

  .page-about .about-panel {
    box-shadow: 12px 12px 0 rgba(2, 11, 9, 0.85);
    margin-right: 12px;
  }

  .page-about .about-panel:nth-child(even) {
    margin-left: 18px;
  }

  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .crew-node,
  .page-about .about-rail__link {
    transition: none;
  }
}
<<<PAGE_CSS_END>>>