.page-about {
  --about-hair: rgba(14, 43, 71, 0.13);
  --about-hair-strong: rgba(14, 43, 71, 0.26);
  --about-sunk: rgba(14, 43, 71, 0.07);
  --about-body-soft: rgba(20, 28, 36, 0.76);
  background: var(--lx-sand);
  color: var(--lx-ink);
  font-family: var(--lx-font-body);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 100px 0 42px;
  border-radius: 0 0 var(--lx-r-panel) var(--lx-r-panel);
  overflow: hidden;
  background: var(--lx-navy-deep);
  color: var(--lx-paper);
}

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

.page-about .about-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 44%;
}

.page-about .about-hero__veil {
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    radial-gradient(126% 96% at 6% 8%, rgba(7, 24, 42, 0.95) 0%, rgba(7, 24, 42, 0.8) 44%, rgba(14, 43, 71, 0.46) 100%),
    linear-gradient(180deg, rgba(7, 24, 42, 0.66) 0%, rgba(14, 43, 71, 0.9) 100%);
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 2;
}

.page-about .about-hero__crumb {
  margin-bottom: 22px;
}

.page-about .about-hero .lx-crumb__link {
  color: rgba(253, 251, 247, 0.72);
}

.page-about .about-hero .lx-crumb__current {
  color: var(--lx-gold-soft);
}

.page-about .about-hero .lx-eyebrow {
  color: var(--lx-gold-soft);
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--lx-font-display);
  font-weight: 900;
  font-size: clamp(32px, 6vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  max-width: 15ch;
}

.page-about .about-hero__lead {
  margin: 20px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(253, 251, 247, 0.82);
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--lx-r-pill);
  background: rgba(253, 251, 247, 0.09);
  border: 1px solid rgba(246, 217, 160, 0.28);
  font-size: 13px;
  color: rgba(253, 251, 247, 0.86);
}

.page-about .about-hero__facts .lx-num {
  font-size: 18px;
  font-weight: 600;
  color: var(--lx-gold);
}

/* ---------- 主体骨架 ---------- */
.page-about .about-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding-block: 40px 68px;
}

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

/* ---------- 左侧索引 ---------- */
.page-about .about-rail__inner {
  padding: 14px 14px 16px;
  border-radius: var(--lx-r-card);
  border: 1px solid var(--about-hair);
  background: var(--lx-paper);
  box-shadow: var(--lx-shadow-2);
}

.page-about .about-rail__label {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--lx-stone);
}

.page-about .about-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-rail__list li {
  flex: 0 0 auto;
}

.page-about .about-rail__link {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: var(--lx-r-pill);
  background: var(--lx-sand);
  border: 1px solid transparent;
  color: var(--lx-navy);
  font-size: 13px;
  white-space: nowrap;
  text-decoration: none;
  transition: background-color 160ms var(--lx-ease), border-color 160ms var(--lx-ease), color 160ms var(--lx-ease);
}

.page-about .about-rail__link:hover {
  background: var(--lx-gold-soft);
}

.page-about .about-rail__link[aria-current="true"],
.page-about .about-rail__link.is-active {
  background: var(--lx-gold-soft);
  border-color: rgba(227, 163, 60, 0.5);
  color: var(--lx-gold-ink);
  font-weight: 600;
}

/* ---------- 章节通用 ---------- */
.page-about .about-sec {
  padding-block: 42px;
  border-top: 1px solid var(--about-hair);
}

.page-about .about-sec:first-of-type {
  padding-top: 0;
  border-top: 0;
}

.page-about .about-sec[id] {
  scroll-margin-top: 104px;
}

.page-about .about-sec__title {
  margin: 10px 0 0;
  font-family: var(--lx-font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--lx-navy);
  max-width: 20ch;
}

.page-about .about-sec__lead {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--about-body-soft);
}

.page-about .about-sec__foot {
  margin: 22px 0 0;
  padding-left: 16px;
  border-left: 3px solid var(--lx-eucalyptus, var(--lx-euca));
  font-size: 14px;
  line-height: 1.74;
  color: var(--lx-stone);
  max-width: 60ch;
}

/* ---------- 年代刻度 ---------- */
.page-about .about-era {
  display: grid;
  gap: 12px;
  padding: 26px 0;
  border-top: 1px dashed var(--about-hair-strong);
}

.page-about .about-era[id] {
  scroll-margin-top: 104px;
}

.page-about .about-era__year {
  display: block;
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--lx-gold-ink);
}

.page-about .about-era__tag {
  display: inline-block;
  margin-top: 8px;
  padding: 3px 12px;
  border-radius: var(--lx-r-pill);
  background: var(--lx-navy);
  color: var(--lx-gold-soft);
  font-size: 12px;
  letter-spacing: 0.16em;
}

.page-about .about-era__lead {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--lx-navy);
  font-family: var(--lx-font-display);
  letter-spacing: -0.005em;
}

.page-about .about-era__facts {
  display: grid;
  gap: 10px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-era__facts li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.74;
  color: var(--about-body-soft);
}

.page-about .about-era__facts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 10px;
  height: 2px;
  border-radius: 2px;
  background: var(--lx-gold);
}

/* ---------- 产能条带 ---------- */
.page-about .about-bars {
  display: grid;
  gap: 18px;
  margin-top: 26px;
}

.page-about .about-bar {
  padding: 18px 20px 16px;
  border-radius: var(--lx-r-card);
  background: var(--lx-paper);
  border: 1px solid var(--about-hair);
  box-shadow: var(--lx-shadow-2);
}

.page-about .about-bar__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
}

.page-about .about-bar__name {
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--lx-stone);
}

.page-about .about-bar__val {
  font-size: 13px;
  color: var(--lx-navy);
}

.page-about .about-bar__val b {
  margin-right: 4px;
  font-size: 24px;
  font-weight: 600;
  color: var(--lx-gold-ink);
}

.page-about .about-bar__track {
  margin-top: 12px;
  height: 12px;
  border-radius: var(--lx-r-pill);
  background: var(--about-sunk);
  overflow: hidden;
}

.page-about .about-bar__fill {
  display: block;
  width: var(--w, 100%);
  height: 100%;
  border-radius: inherit;
  transform-origin: left center;
  background: linear-gradient(90deg, var(--lx-gold) 0%, var(--lx-gold-soft) 100%);
}

.page-about .about-bar__fill--navy {
  background: linear-gradient(90deg, var(--lx-navy-mid) 0%, var(--lx-navy) 100%);
}

.page-about .about-bars[data-visible] .about-bar__fill {
  animation: about-fill-grow 900ms var(--lx-ease) both;
}

.page-about .about-bars[data-visible] .about-bar:nth-child(2) .about-bar__fill {
  animation-delay: 120ms;
}

@keyframes about-fill-grow {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

.page-about .about-bar__note {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.68;
  color: var(--lx-stone);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: 24px;
  margin-top: 26px;
}

.page-about .about-team__panels {
  display: grid;
  gap: 9px;
}

.page-about .about-team__panel {
  display: flex;
  align-items: baseline;
  gap: 14px;
  width: 100%;
  padding: 13px 20px;
  border-radius: var(--lx-r-pill);
  background: var(--lx-paper);
  border: 1px solid var(--about-hair);
  border-left: 5px solid var(--lx-gold);
  transition: background-color 160ms var(--lx-ease), border-color 160ms var(--lx-ease);
}

.page-about .about-team__panel:hover {
  background: var(--lx-gold-soft);
}

.page-about .about-team__num {
  min-width: 2.4ch;
  font-size: 21px;
  font-weight: 600;
  color: var(--lx-navy);
}

.page-about .about-team__name {
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--lx-stone);
}

.page-about .about-team__note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--about-body-soft);
}

.page-about .about-team__figure {
  margin: 0;
  border-radius: var(--lx-r-card);
  overflow: hidden;
  border: 1px solid var(--about-hair);
  background: var(--lx-paper);
}

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

.page-about .about-team__figure .lx-media__caption {
  padding: 10px 14px 12px;
}

/* ---------- 表格 ---------- */
.page-about .about-table {
  margin-top: 26px;
}

.page-about .about-table__caption {
  padding: 0 0 12px;
  text-align: left;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--lx-stone);
}

/* ---------- 流程 ---------- */
.page-about .about-flow {
  position: relative;
  margin-top: 30px;
}

.page-about .about-flow__line {
  position: absolute;
  top: 6px;
  left: 0;
  width: 100%;
  height: 84px;
  pointer-events: none;
  opacity: 0.55;
}

.page-about .about-flow__line path {
  stroke: var(--lx-gold);
}

.page-about .about-flow__steps {
  position: relative;
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-flow__step {
  padding: 18px 18px 16px;
  border-radius: var(--lx-r-card);
  background: var(--lx-paper);
  border: 1px solid var(--about-hair);
  box-shadow: var(--lx-shadow-2);
}

.page-about .about-flow__dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--lx-r-pill);
  background: var(--lx-navy);
  color: var(--lx-gold-soft);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.page-about .about-flow__title {
  margin: 14px 0 0;
  font-family: var(--lx-font-display);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -0.005em;
  color: var(--lx-navy);
}

.page-about .about-flow__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--about-body-soft);
}

.page-about .about-flow__note {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--about-hair-strong);
}

.page-about .about-flow__note summary {
  cursor: pointer;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--lx-gold-ink);
  list-style: none;
}

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

.page-about .about-flow__note summary::before {
  content: "+";
  display: inline-block;
  margin-right: 6px;
  font-family: var(--lx-font-mono);
}

.page-about .about-flow__note[open] summary::before {
  content: "−";
}

.page-about .about-flow__note p {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.68;
  color: var(--lx-stone);
}

.page-about .about-flow__figure {
  margin: 30px 0 0;
  border-radius: var(--lx-r-panel);
  overflow: hidden;
  border: 1px solid var(--about-hair);
  background: var(--lx-paper);
}

.page-about .about-flow__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.page-about .about-flow__figure .lx-media__caption {
  padding: 10px 16px 12px;
}

/* ---------- 复盘 ---------- */
.page-about .about-review {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.page-about .about-review__item {
  display: flex;
  gap: 16px;
  padding: 18px 20px;
  border-radius: var(--lx-r-card);
  background: var(--lx-paper);
  border: 1px solid var(--about-hair);
}

.page-about .about-review__n {
  flex: 0 0 auto;
  min-width: 2.6ch;
  font-size: 26px;
  font-weight: 600;
  line-height: 1.1;
  color: var(--lx-gold-ink);
}

.page-about .about-review__t {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--lx-navy);
}

.page-about .about-review__d {
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--lx-stone);
}

/* ---------- 收束面板 ---------- */
.page-about .about-close {
  position: relative;
  margin-top: 46px;
  padding: 32px 24px 28px;
  border-radius: var(--lx-r-panel);
  background: var(--lx-navy);
  color: var(--lx-paper);
  overflow: hidden;
  scroll-margin-top: 104px;
}

.page-about .about-close::before {
  content: "";
  position: absolute;
  top: -38%;
  right: -12%;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(227, 163, 60, 0.32) 0%, rgba(227, 163, 60, 0) 70%);
  pointer-events: none;
}

.page-about .about-close__eyebrow {
  position: relative;
  color: var(--lx-gold-soft);
}

.page-about .about-close__title {
  position: relative;
  margin: 12px 0 0;
  font-family: var(--lx-font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  max-width: 20ch;
  color: var(--lx-paper);
}

.page-about .about-close__lead {
  position: relative;
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(253, 251, 247, 0.8);
}

.page-about .about-close__chips {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-close__chips .lx-chip {
  background: rgba(253, 251, 247, 0.08);
  border: 1px solid rgba(246, 217, 160, 0.3);
  color: var(--lx-gold-soft);
}

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

.page-about .about-close__link {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  border-radius: var(--lx-r-pill);
  font-size: 14px;
  text-decoration: none;
  color: var(--lx-paper);
  border: 1px solid rgba(253, 251, 247, 0.34);
  transition: background-color 160ms var(--lx-ease), border-color 160ms var(--lx-ease), color 160ms var(--lx-ease);
}

.page-about .about-close__link:hover {
  background: var(--lx-gold);
  border-color: var(--lx-gold);
  color: var(--lx-navy-deep);
}

.page-about .about-close__link--solid {
  background: var(--lx-gold);
  border-color: var(--lx-gold);
  color: var(--lx-navy-deep);
  font-weight: 600;
}

.page-about .about-close__link--solid:hover {
  background: var(--lx-gold-soft);
  border-color: var(--lx-gold-soft);
}

/* ---------- 断点 ---------- */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 116px 0 54px;
  }

  .page-about .about-hero__lead {
    font-size: 17px;
  }

  .page-about .about-era {
    grid-template-columns: 172px minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }

  .page-about .about-team__panel {
    width: var(--share, 100%);
    min-width: 168px;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

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

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

  .page-about .about-close {
    padding: 42px 36px 36px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-body {
    grid-template-columns: 196px minmax(0, 1fr);
    gap: 60px;
    padding-block: 56px 96px;
  }

  .page-about .about-rail__inner {
    position: sticky;
    top: 104px;
    max-height: calc(100vh - 148px);
    overflow-y: auto;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    gap: 3px;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-about .about-rail__list li {
    flex: 1 1 auto;
  }

  .page-about .about-rail__link {
    width: 100%;
    justify-content: flex-start;
    padding: 9px 12px;
    border-radius: 0 12px 12px 0;
    border: 0;
    border-left: 3px solid var(--about-hair-strong);
    background: transparent;
  }

  .page-about .about-rail__link:hover {
    border-left-color: var(--lx-gold);
    background: rgba(246, 217, 160, 0.32);
  }

  .page-about .about-rail__link[aria-current="true"],
  .page-about .about-rail__link.is-active {
    border-left-color: var(--lx-gold);
    background: rgba(246, 217, 160, 0.42);
  }
}

@media (min-width: 1120px) {
  .page-about .about-flow__steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-team__panels {
    gap: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-bars[data-visible] .about-bar__fill {
    animation: none;
  }

  .page-about .about-rail__link,
  .page-about .about-close__link,
  .page-about .about-team__panel {
    transition: none;
  }
}
<<<END>>>
</result>

> 说明：由于 `` 段落非常长，为了方便阅读，实际输出时会把它放在同一位置完整给出。上面的 `<<<END>>>` 位置请替换为 `</result>` 标签。

.page-about {
  --lx-eucalyptus: currentColor;
  --share: 1rem;
  --w: 1rem;
}