.page-about {
  --about-rule: rgba(30, 27, 24, .12);
  --about-rule-soft: rgba(30, 27, 24, .07);
  background: var(--cloud);
  color: var(--ink);
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: clamp(88px, 13vw, 128px) 0 clamp(40px, 6vw, 64px);
  background:
    radial-gradient(120% 92% at 88% -6%, rgba(31, 75, 255, .11), transparent 62%),
    radial-gradient(90% 70% at 0% 0%, rgba(240, 138, 36, .08), transparent 58%);
}

.page-about .about-hero .breadcrumbs {
  margin-bottom: clamp(22px, 4vw, 38px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.1rem, 7.2vw, 4rem);
  line-height: 1.05;
  letter-spacing: -.02em;
  margin: 14px 0 0;
  max-width: 15em;
}

.page-about .about-hero .lede {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1rem;
  line-height: 1.85;
}

.page-about .about-facts {
  list-style: none;
  margin: 26px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--about-rule-soft);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 16px;
}

.page-about .about-facts li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-about .about-facts__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.45rem;
  font-weight: 700;
  line-height: 1;
  color: var(--blue);
}

.page-about .about-facts__label {
  font-size: .82rem;
  color: var(--ink-mute);
  letter-spacing: .02em;
}

/* ---------- 章节骨架 ---------- */
.page-about .about-section {
  padding: clamp(48px, 8vw, 88px) 0;
}

.page-about .about-sec-head {
  max-width: 700px;
}

.page-about .about-sec-head .section-title {
  margin: 10px 0 14px;
  font-size: clamp(1.55rem, 4.6vw, 2.5rem);
  line-height: 1.16;
  letter-spacing: -.015em;
}

.page-about .about-sec-note {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.85;
  font-size: .96rem;
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  background: linear-gradient(180deg, var(--cloud), var(--cream) 55%, var(--cloud));
}

.page-about .about-timeline__body {
  position: relative;
  margin-top: clamp(30px, 5vw, 48px);
  isolation: isolate;
}

.page-about .about-timeline__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .14;
  filter: saturate(.55) contrast(.95);
  border-radius: var(--r-xl);
  pointer-events: none;
  z-index: -1;
}

.page-about .tl {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 36px;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 16px;
  bottom: 16px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--blue) 0%, var(--amber) 100%);
  opacity: .45;
}

.page-about .tl__item {
  position: relative;
  margin-bottom: 12px;
}

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: -36px;
  top: 21px;
  width: 14px;
  height: 14px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--cloud);
  border: 2px solid var(--amber);
  transition: background .24s var(--ease), border-color .24s var(--ease);
}

.page-about .tl__item:hover::before {
  background: var(--amber);
}

.page-about .tl__node {
  border-radius: var(--r-md);
}

.page-about .tl__node > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 15px 18px;
  border-radius: var(--r-md);
  background: var(--cloud);
  border: 1px solid var(--about-rule-soft);
  transition: background .24s var(--ease), border-color .24s var(--ease), transform .24s var(--ease);
}

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

.page-about .tl__node > summary:hover {
  border-color: rgba(31, 75, 255, .3);
  transform: translateX(3px);
}

.page-about .tl__node > summary:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

.page-about .tl__node[open] > summary {
  background: var(--cream);
  border-color: rgba(240, 138, 36, .38);
}

.page-about .tl__season {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .76rem;
  letter-spacing: .08em;
  color: var(--blue);
  background: var(--glow);
  border-radius: var(--r-pill);
  padding: 4px 11px;
  white-space: nowrap;
}

.page-about .tl__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  line-height: 1.45;
  color: var(--ink);
  flex: 1 1 auto;
  min-width: 0;
}

.page-about .tl__chev {
  flex: 0 0 auto;
  margin-left: auto;
  width: 8px;
  height: 8px;
  border-right: 2px solid var(--ink-mute);
  border-bottom: 2px solid var(--ink-mute);
  transform: rotate(45deg);
  transition: transform .24s var(--ease);
}

.page-about .tl__node[open] .tl__chev {
  transform: rotate(-135deg);
}

.page-about .tl__panel {
  padding: 14px 18px 6px;
  color: var(--ink-soft);
  font-size: .94rem;
  line-height: 1.85;
}

.page-about .tl__panel p {
  margin: 0 0 10px;
}

/* ---------- 复盘文化 ---------- */
.page-about .about-ledger__grid {
  display: grid;
  gap: 32px;
}

.page-about .about-ledger__main .section-title {
  margin: 10px 0 18px;
  font-size: clamp(1.55rem, 4.6vw, 2.5rem);
  line-height: 1.16;
  letter-spacing: -.015em;
}

.page-about .about-ledger__main > p {
  margin: 0 0 16px;
  color: var(--ink-soft);
  line-height: 1.9;
  max-width: 38em;
}

.page-about .about-points {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
}

.page-about .about-points li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 18px 0;
  border-top: 1px solid var(--about-rule-soft);
}

.page-about .about-points li:last-child {
  border-bottom: 1px solid var(--about-rule-soft);
}

.page-about .about-points__key {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .92rem;
  letter-spacing: .03em;
  color: var(--blue);
}

.page-about .about-points p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.85;
  font-size: .94rem;
}

.page-about .about-quote {
  margin: 0;
  align-self: start;
  background: var(--cream);
  border-left: 3px solid var(--blue);
  border-radius: 0 var(--r-lg) var(--r-lg) 0;
  padding: 24px 22px;
  box-shadow: var(--shadow-card);
}

.page-about .about-quote__text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.16rem;
  line-height: 1.65;
  color: var(--ink);
  margin: 0 0 14px;
}

.page-about .about-quote__by {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--ink-mute);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  background: var(--cream);
}

.page-about .about-team__media {
  margin: clamp(28px, 5vw, 44px) 0 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--glow);
}

.page-about .about-team__media img {
  width: 100%;
  object-fit: cover;
}

.page-about .about-team__media figcaption {
  padding: 13px 18px;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .04em;
  color: var(--ink-mute);
  background: var(--cloud);
}

.page-about .team-bars {
  list-style: none;
  margin: clamp(28px, 5vw, 44px) 0 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-about .team-bars__row {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "label num"
    "track track"
    "tip tip";
  align-items: center;
  gap: 8px 14px;
  padding: 16px 16px 18px;
  border-radius: var(--r-md);
  background: var(--cloud);
  transition: background .24s var(--ease), transform .24s var(--ease);
}

.page-about .team-bars__row:hover {
  background: var(--glow);
  transform: translateY(-2px);
}

.page-about .team-bars__label {
  grid-area: label;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .98rem;
  color: var(--ink);
}

.page-about .team-bars__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1;
  color: var(--ink);
}

.page-about .team-bars__track {
  grid-area: track;
  display: block;
  height: 10px;
  border-radius: var(--r-pill);
  background: rgba(30, 27, 24, .07);
  overflow: hidden;
}

.page-about .team-bars__fill {
  display: block;
  height: 100%;
  border-radius: var(--r-pill);
  transition: width .5s var(--ease);
}

.page-about .team-bars__row:nth-child(1) .team-bars__fill {
  width: 39.3%;
  background: var(--blue);
}

.page-about .team-bars__row:nth-child(2) .team-bars__fill {
  width: 32.2%;
  background: var(--deep);
}

.page-about .team-bars__row:nth-child(3) .team-bars__fill {
  width: 17.9%;
  background: var(--amber);
}

.page-about .team-bars__row:nth-child(4) .team-bars__fill {
  width: 10.7%;
  background: var(--green);
}

.page-about .team-bars__tip {
  grid-area: tip;
  font-size: .86rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-about .about-team__note {
  margin-top: 30px;
  padding: 22px 22px 22px 26px;
  border-left: 3px solid var(--amber);
  background: var(--cloud);
  border-radius: 0 var(--r-md) var(--r-md) 0;
}

.page-about .about-team__note p {
  margin: 0 0 12px;
  color: var(--ink-soft);
  line-height: 1.85;
  font-size: .94rem;
}

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

/* ---------- 合作生态 ---------- */
.page-about .about-partners__grid {
  display: grid;
  gap: 32px;
}

.page-about .about-partners__text .section-title {
  margin: 10px 0 18px;
  font-size: clamp(1.55rem, 4.6vw, 2.5rem);
  line-height: 1.16;
  letter-spacing: -.015em;
}

.page-about .about-partners__text > p {
  margin: 0 0 16px;
  color: var(--ink-soft);
  line-height: 1.9;
}

.page-about .about-statgrid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 26px 0;
}

.page-about .about-stat {
  background: var(--deep);
  border-radius: var(--r-md);
  padding: 20px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-stat__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1;
  color: #FFFFFF;
}

.page-about .about-stat__label {
  font-size: .8rem;
  letter-spacing: .02em;
  color: rgba(255, 255, 255, .72);
}

.page-about .about-partners__media {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--glow);
}

.page-about .about-partners__media img {
  width: 100%;
  object-fit: cover;
}

.page-about .about-partners__media figcaption {
  padding: 13px 18px;
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .04em;
  color: var(--ink-mute);
  background: var(--cloud);
}

/* ---------- 复盘观察与认可 ---------- */
.page-about .about-notes {
  background: var(--cloud);
}

.page-about .about-notes__intro {
  margin: clamp(24px, 4vw, 34px) 0 0;
  max-width: 40em;
  color: var(--ink-soft);
  line-height: 1.9;
}

.page-about .about-notes__intro a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(31, 75, 255, .35);
  transition: border-color .2s var(--ease);
}

.page-about .about-notes__intro a:hover {
  border-color: var(--blue);
}

.page-about .about-notes__grid {
  display: grid;
  gap: 16px;
  margin-top: clamp(26px, 4vw, 38px);
}

.page-about .about-note {
  border-radius: var(--r-lg);
  padding: 24px 22px 26px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-about .about-note--cream {
  background: var(--cream);
  border: 1px solid var(--about-rule-soft);
}

.page-about .about-note--deep {
  background:
    radial-gradient(120% 100% at 100% 0%, rgba(31, 75, 255, .55), transparent 60%),
    var(--deep);
  color: #FFFFFF;
}

.page-about .about-note--glow {
  background: var(--glow);
  border: 1px solid rgba(31, 75, 255, .16);
}

.page-about .about-note__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--ink-mute);
}

.page-about .about-note--deep .about-note__kicker {
  color: rgba(255, 255, 255, .7);
}

.page-about .about-note__big {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--blue);
}

.page-about .about-note--deep .about-note__big {
  color: #FFFFFF;
}

.page-about .about-note--glow .about-note__big {
  color: var(--amber);
}

.page-about .about-note__big small {
  font-size: .82rem;
  font-weight: 400;
  letter-spacing: .04em;
  margin-left: 4px;
  color: var(--ink-mute);
}

.page-about .about-note--deep .about-note__big small {
  color: rgba(255, 255, 255, .7);
}

.page-about .about-note__text {
  margin: 0;
  font-size: .92rem;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-about .about-note--deep .about-note__text {
  color: rgba(255, 255, 255, .82);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  padding-bottom: clamp(56px, 9vw, 96px);
}

.page-about .about-cta__inner {
  background: linear-gradient(118deg, var(--deep) 0%, var(--blue) 100%);
  border-radius: var(--r-xl);
  padding: clamp(30px, 5vw, 48px) clamp(22px, 4vw, 48px);
  display: grid;
  gap: 22px;
  color: #FFFFFF;
}

.page-about .about-cta__text h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.35rem, 4vw, 2rem);
  line-height: 1.2;
  letter-spacing: -.01em;
}

.page-about .about-cta__text p {
  margin: 0;
  font-size: .95rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, .82);
}

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

.page-about .about-cta .btn--primary {
  background: #FFFFFF;
  color: var(--deep);
  border-color: #FFFFFF;
}

.page-about .about-cta .btn--ghost {
  background: transparent;
  color: #FFFFFF;
  border-color: rgba(255, 255, 255, .55);
}

.page-about .about-cta .btn--ghost:hover {
  border-color: #FFFFFF;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-points li {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: 22px;
    align-items: baseline;
  }

  .page-about .tl__node > summary {
    flex-wrap: nowrap;
    padding: 16px 22px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    gap: clamp(36px, 5vw, 64px);
    align-items: end;
  }

  .page-about .about-ledger__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: clamp(36px, 5vw, 60px);
    align-items: start;
  }

  .page-about .about-quote {
    margin-top: 62px;
  }

  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 1.22fr) minmax(0, .88fr);
    gap: clamp(36px, 5vw, 60px);
    align-items: center;
  }

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

  .page-about .about-note:nth-child(2) {
    margin-top: 24px;
  }

  .page-about .about-note:nth-child(3) {
    margin-top: 48px;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 40px;
  }
}

@media (min-width: 1080px) {
  .page-about .team-bars {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .page-about .about-statgrid {
    max-width: 440px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl__item::before,
  .page-about .tl__node > summary,
  .page-about .tl__chev,
  .page-about .team-bars__row,
  .page-about .team-bars__fill,
  .page-about .about-notes__intro a {
    transition: none;
  }

  .page-about .team-bars__row:hover,
  .page-about .tl__node > summary:hover {
    transform: none;
  }
}
<<<END>>>