.page-about {
  --about-gap: clamp(56px, 8vw, 108px);
  --about-hair: rgba(29, 58, 92, .85);
  --about-panel: linear-gradient(180deg, rgba(23, 162, 166, .07) 0%, rgba(23, 162, 166, 0) 62%), #0B1D34;
}

/* ---------- 滚动章节高亮刻度 ---------- */
.page-about [data-observe] {
  position: relative;
}

@media (min-width: 1280px) {
  .page-about [data-observe]::before {
    content: "";
    position: absolute;
    left: 14px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--c-lake) 0%, var(--c-gold) 100%);
    transform: scaleY(0);
    transform-origin: top center;
    transition: transform .7s var(--ease);
    pointer-events: none;
  }

  .page-about [data-observe].is-current::before {
    transform: scaleY(1);
  }
}

/* ---------- 区块标题 ---------- */
.page-about .sec-head {
  max-width: 780px;
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-about .sec-head h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 3.2vw, 42px);
  line-height: 1.18;
  letter-spacing: -.02em;
  color: var(--ink);
  margin: 14px 0 16px;
}

.page-about .sec-lede {
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--ink-dim);
  max-width: 42em;
  margin: 0;
}

/* ---------- 首屏框景 ---------- */
.page-about .about-hero {
  position: relative;
  padding: calc(var(--header-offset) + 28px) 0 clamp(46px, 6vw, 84px);
  background:
    radial-gradient(110% 82% at 88% -12%, rgba(23, 162, 166, .22) 0%, rgba(23, 162, 166, 0) 62%),
    radial-gradient(76% 68% at 0% 112%, rgba(232, 178, 58, .10) 0%, rgba(232, 178, 58, 0) 60%),
    linear-gradient(180deg, var(--c-night) 0%, var(--c-deep) 100%);
}

.page-about .about-hero-frame {
  position: relative;
  display: grid;
  gap: clamp(28px, 4vw, 44px);
  padding: clamp(24px, 3.4vw, 48px);
  border: 1px solid var(--about-hair);
  border-top-color: rgba(232, 178, 58, .5);
  background: rgba(7, 23, 41, .35);
}

.page-about .about-hero-frame::before,
.page-about .about-hero-frame::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  pointer-events: none;
}

.page-about .about-hero-frame::before {
  left: -1px;
  bottom: -1px;
  border-left: 2px solid var(--c-lake);
  border-bottom: 2px solid var(--c-lake);
}

.page-about .about-hero-frame::after {
  right: -1px;
  top: -1px;
  border-right: 2px solid var(--c-gold);
  border-top: 2px solid var(--c-gold);
}

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

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 5.4vw, 62px);
  line-height: 1.08;
  letter-spacing: -.025em;
  color: var(--ink);
  margin: 12px 0 18px;
  max-width: 15em;
}

.page-about .about-lede {
  font-size: clamp(15px, 1.65vw, 17.5px);
  line-height: 1.85;
  color: var(--ink-dim);
  max-width: 40em;
  margin: 0;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .about-hero-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--about-hair);
  border: 1px solid var(--about-hair);
  align-content: start;
  min-width: 0;
}

.page-about .fact {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 16px 20px;
  background: #0B1D34;
}

.page-about .fact-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(24px, 3vw, 34px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--c-gold);
}

.page-about .fact-label {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--ink-faint);
}

@media (min-width: 980px) {
  .page-about .about-hero-frame {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, .95fr);
    align-items: start;
  }
}

/* ---------- 历程时间线 ---------- */
.page-about .about-timeline {
  padding: var(--about-gap) 0;
  border-top: 1px solid var(--about-hair);
}

.page-about .tl-figure {
  margin-bottom: clamp(28px, 4vw, 48px);
  aspect-ratio: 16 / 9;
}

.page-about .tl-grid {
  display: grid;
  gap: 26px;
}

@media (min-width: 900px) {
  .page-about .tl-grid {
    grid-template-columns: 116px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
  }
}

.page-about .tl-scale {
  display: none;
}

@media (min-width: 900px) {
  .page-about .tl-scale {
    display: flex;
    flex-direction: column;
    gap: 18px;
    position: sticky;
    top: calc(var(--header-offset) + 8px);
    align-self: start;
    padding-left: 14px;
    border-left: 1px solid var(--about-hair);
  }

  .page-about .tl-scale-k {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--ink-faint);
  }

  .page-about .tl-scale-i {
    font-family: var(--font-mono);
    font-size: 13px;
    letter-spacing: .08em;
    color: var(--ink-faint);
    transition: color .3s var(--ease);
  }

  .page-about .tl-scale-i.is-on {
    color: var(--c-gold);
  }
}

.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .tl-item {
  position: relative;
  padding: 0 0 clamp(26px, 3.4vw, 40px) clamp(20px, 3vw, 32px);
  border-left: 1px solid var(--about-hair);
}

.page-about .tl-item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 8px;
  width: 9px;
  height: 9px;
  background: var(--c-deep);
  border: 1px solid var(--c-lake);
  transform: rotate(45deg);
}

.page-about .tl-item:last-child::before {
  border-color: var(--c-gold);
  background: rgba(232, 178, 58, .18);
}

.page-about .tl-stamp {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 10px;
}

.page-about .tl-year {
  font-family: var(--font-mono);
  font-size: clamp(18px, 2vw, 21px);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--c-lake);
}

.page-about .tl-phase {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--c-gold);
  border: 1px solid rgba(232, 178, 58, .38);
  padding: 2px 8px;
}

.page-about .tl-item h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 2.1vw, 24px);
  letter-spacing: -.015em;
  line-height: 1.32;
  color: var(--ink);
  margin: 0 0 10px;
}

.page-about .tl-text {
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--ink-dim);
  max-width: 40em;
  margin: 0;
}

/* ---------- 栏目展区 ---------- */
.page-about .about-pillars {
  padding: var(--about-gap) 0;
  border-top: 1px solid var(--about-hair);
}

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

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

@media (min-width: 1040px) {
  .page-about .pillar-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .pillar {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--about-panel);
  transition: background-color .3s var(--ease);
}

.page-about .pillar::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-lake) 0%, var(--c-gold) 100%);
  transition: width .45s var(--ease);
}

.page-about .pillar:hover::after,
.page-about .pillar:focus-within::after {
  width: 100%;
}

.page-about .pillar-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--c-gold);
}

.page-about .pillar h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 1.9vw, 22px);
  letter-spacing: -.01em;
  color: var(--ink);
  margin: 0;
}

.page-about .pillar-text {
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--ink-dim);
  margin: 0;
}

.page-about .pillar .pillar-meter {
  margin: auto 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--about-hair);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  line-height: 1.6;
  color: var(--ink-faint);
}

/* ---------- 时区服务 ---------- */
.page-about .about-zones {
  padding: var(--about-gap) 0;
  border-top: 1px solid var(--about-hair);
  border-bottom: 1px solid var(--about-hair);
  background:
    radial-gradient(96% 62% at 50% 0%, rgba(23, 162, 166, .15) 0%, rgba(23, 162, 166, 0) 66%),
    var(--c-night);
}

.page-about .zone-arc {
  display: block;
  width: 100%;
  height: auto;
  max-height: 320px;
  margin: 0 auto clamp(26px, 4vw, 44px);
}

.page-about .zone-list {
  display: grid;
  gap: 0;
}

.page-about .zone-row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  padding: 20px 0;
  border-top: 1px solid var(--about-hair);
}

.page-about .zone-row:last-child {
  border-bottom: 1px solid var(--about-hair);
}

.page-about .zone-k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--c-gold);
  padding-top: 4px;
}

.page-about .zone-body h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 1.9vw, 21px);
  letter-spacing: -.01em;
  color: var(--ink);
  margin: 0 0 8px;
}

.page-about .zone-body p {
  font-size: 15px;
  line-height: 1.82;
  color: var(--ink-dim);
  margin: 0;
  max-width: 44em;
}

@media (min-width: 780px) {
  .page-about .zone-row {
    grid-template-columns: 48px minmax(0, 1fr) 120px;
    align-items: start;
  }

  .page-about .zone-body {
    grid-column: 2 / 3;
  }
}

/* ---------- 团队与协作 ---------- */
.page-about .about-team {
  padding: var(--about-gap) 0;
}

.page-about .team-grid {
  display: grid;
  gap: clamp(24px, 3.6vw, 44px);
}

@media (min-width: 900px) {
  .page-about .team-grid {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    align-items: start;
  }
}

.page-about .team-media {
  margin: 0;
}

.page-about .team-copy {
  min-width: 0;
}

.page-about .team-intro {
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-dim);
  margin: 0 0 22px;
  max-width: 42em;
}

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

@media (min-width: 620px) {
  .page-about .role-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .role-list li {
  background: #0B1D34;
  padding: 18px 18px 20px;
}

.page-about .role-list h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -.01em;
  color: var(--c-lake-soft);
  margin: 0 0 8px;
}

.page-about .role-list p {
  font-size: 14px;
  line-height: 1.76;
  color: var(--ink-dim);
  margin: 0;
}

.page-about .partner-note {
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 4px 0 4px 18px;
  border-left: 2px solid var(--c-gold);
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--ink-dim);
  max-width: 44em;
}

/* ---------- 长期价值 ---------- */
.page-about .about-stay {
  padding: var(--about-gap) 0 0;
  border-top: 1px solid var(--about-hair);
}

.page-about .stay-figure {
  margin: 0 0 clamp(28px, 4vw, 44px);
  aspect-ratio: 16 / 9;
}

.page-about .stay-grid {
  display: grid;
  gap: 16px;
}

@media (min-width: 820px) {
  .page-about .stay-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .stay-card {
  position: relative;
  padding: 24px 22px 26px;
  border: 1px solid var(--about-hair);
  background: linear-gradient(180deg, rgba(232, 178, 58, .09) 0%, rgba(232, 178, 58, 0) 58%), #0B1D34;
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}

.page-about .stay-card:hover {
  transform: translateY(-3px);
  border-color: rgba(23, 162, 166, .55);
}

.page-about .stay-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 38px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: rgba(232, 178, 58, .4);
  margin-bottom: 16px;
}

.page-about .stay-card h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 1.9vw, 21px);
  letter-spacing: -.01em;
  color: var(--ink);
  margin: 0 0 10px;
}

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

/* ---------- 收束 ---------- */
.page-about .about-close {
  padding: var(--about-gap) 0;
}

.page-about .close-panel {
  display: grid;
  gap: clamp(24px, 3.4vw, 40px);
  padding: clamp(24px, 3.4vw, 44px);
  border: 1px solid var(--about-hair);
  background:
    radial-gradient(90% 120% at 100% 0%, rgba(23, 162, 166, .16) 0%, rgba(23, 162, 166, 0) 62%),
    #0B1D34;
}

@media (min-width: 900px) {
  .page-about .close-panel {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, .9fr);
    align-items: center;
  }
}

.page-about .close-copy h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 2.8vw, 34px);
  line-height: 1.2;
  letter-spacing: -.02em;
  color: var(--ink);
  margin: 14px 0 14px;
}

.page-about .close-copy p {
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-dim);
  margin: 0;
  max-width: 40em;
}

.page-about .close-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.page-about .close-link {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--c-lake-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: border-color .25s var(--ease), color .25s var(--ease);
}

.page-about .close-link:hover,
.page-about .close-link:focus-visible {
  color: var(--c-gold);
  border-bottom-color: var(--c-gold);
}
<<<END>>>