.page-about {
  --about-gap: clamp(56px, 9vw, 120px);
  --about-card-bg: linear-gradient(158deg, rgba(23, 48, 107, .82) 0%, rgba(14, 31, 69, .74) 58%, rgba(6, 15, 38, .68) 100%);
  --about-banner-bg: linear-gradient(180deg, rgba(14, 31, 69, .96) 0%, rgba(6, 15, 38, .72) 100%);
  position: relative;
  overflow-x: clip;
  background: linear-gradient(180deg, #0A1730 0%, #060F26 42%, #060F26 100%);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(40px, 7vw, 84px) 0 clamp(34px, 5vw, 62px);
  background:
    radial-gradient(54% 62% at 80% 4%, rgba(43, 230, 200, .16), transparent 66%),
    radial-gradient(50% 58% at 2% 96%, rgba(255, 138, 61, .10), transparent 70%);
}

.page-about .about-hero__inner {
  display: block;
}

.page-about .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--muted);
}

.page-about .breadcrumb__list li {
  display: flex;
  align-items: center;
  gap: 6px;
}

.page-about .breadcrumb__list li + li::before {
  content: "/";
  color: var(--line);
}

.page-about .breadcrumb__list a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .24s var(--ease), border-color .24s var(--ease);
}

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

.page-about .about-hero__title {
  margin: 0 0 24px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 7.6vw, 76px);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--text);
  transform: skewX(-1.5deg);
}

.page-about .about-hero__line {
  display: block;
}

.page-about .about-hero__line em {
  font-style: normal;
  color: var(--cyan);
  text-shadow: 0 0 34px rgba(43, 230, 200, .34);
}

.page-about .about-hero__lede {
  max-width: 40ch;
  margin: 0 0 8px;
  color: var(--text-soft);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 20px;
  margin-top: clamp(30px, 5vw, 52px);
  padding-top: 26px;
  border-top: 1px solid var(--line);
}

.page-about .fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .fact__num {
  font-size: clamp(24px, 4.4vw, 34px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-about .fact__label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 通用标题组 ---------- */
.page-about .about-head {
  display: grid;
  gap: 12px;
  max-width: 760px;
  margin-bottom: clamp(26px, 4vw, 46px);
}

.page-about .about-head .section__index {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .22em;
  color: var(--cyan-deep);
}

.page-about .about-head__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(25px, 4.6vw, 42px);
  line-height: 1.18;
  letter-spacing: -.02em;
  color: var(--text);
}

.page-about .about-head__sub {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 01 起点 ---------- */
.page-about .about-why__grid {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.page-about .about-why__lead {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-about .about-why__lead .section__index {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .22em;
  color: var(--cyan-deep);
}

.page-about .about-why__copy {
  display: grid;
  gap: 18px;
  max-width: 62ch;
}

.page-about .about-why__copy p {
  margin: 0;
  color: var(--text-soft);
  line-height: 1.85;
}

.page-about .about-why__pull {
  position: relative;
  margin-top: 6px !important;
  padding: 20px 22px 20px 26px;
  border-radius: var(--r-lg);
  border: 1px solid rgba(43, 230, 200, .28);
  background: linear-gradient(140deg, rgba(20, 168, 148, .14) 0%, rgba(6, 15, 38, .2) 100%);
  font-family: var(--font-display);
  font-size: clamp(17px, 2.4vw, 21px);
  font-weight: 800;
  line-height: 1.5;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-about .about-why__pull::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  bottom: 20px;
  width: 3px;
  border-radius: var(--r-pill);
  background: linear-gradient(180deg, var(--cyan), var(--orange));
}

/* ---------- 02 时间轴 ---------- */
.page-about .about-track__banner {
  margin: 0 0 clamp(30px, 5vw, 56px);
}

.page-about .track {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-about .track__item {
  position: relative;
  display: grid;
  gap: 14px;
  padding: 22px 0 22px 22px;
  border-left: 2px solid var(--line);
  transition: border-color .32s var(--ease);
}

.page-about .track__item::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 30px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--cyan-deep);
  transition: border-color .32s var(--ease), box-shadow .32s var(--ease);
}

.page-about .track__item:hover {
  border-left-color: rgba(43, 230, 200, .6);
}

.page-about .track__item:hover::before {
  border-color: var(--cyan);
  box-shadow: 0 0 0 5px rgba(43, 230, 200, .12);
}

.page-about .track__year {
  font-family: var(--font-mono);
  font-size: clamp(22px, 4vw, 30px);
  font-weight: 700;
  letter-spacing: .02em;
  line-height: 1;
  color: var(--cyan);
}

.page-about .track__item--now .track__year {
  color: var(--orange);
}

.page-about .track__panel {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--about-card-bg);
  padding: 18px 20px;
  transition: border-color .32s var(--ease), background .32s var(--ease);
}

.page-about .track__panel[open] {
  border-color: rgba(43, 230, 200, .46);
}

.page-about .track__item--now .track__panel[open] {
  border-color: rgba(255, 138, 61, .5);
}

.page-about .track__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  cursor: pointer;
  list-style: none;
  outline: none;
}

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

.page-about .track__summary::after {
  content: "";
  flex: none;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg) translateY(-2px);
  transition: transform .3s var(--ease);
}

.page-about .track__item--now .track__summary::after {
  border-color: var(--orange);
}

.page-about .track__panel[open] .track__summary::after {
  transform: rotate(-135deg) translateY(-2px);
}

.page-about .track__summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 6px;
  border-radius: var(--r-md);
}

.page-about .track__summary h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(17px, 2.4vw, 21px);
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-about .track__detail {
  padding-top: 14px;
  margin-top: 14px;
  border-top: 1px dashed var(--line);
}

.page-about .track__detail p {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 03 覆盖范围 ---------- */
.page-about .scope-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: clamp(24px, 4vw, 38px);
}

.page-about .scope-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-about .scope-card {
  position: relative;
  display: grid;
  gap: 12px;
  padding: 24px 22px 26px;
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  background: var(--about-card-bg);
  overflow: hidden;
  transition: border-color .32s var(--ease), transform .32s var(--ease), box-shadow .32s var(--ease);
}

.page-about .scope-card::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan), rgba(43, 230, 200, 0) 78%);
  opacity: .7;
}

.page-about .scope-card:hover {
  border-color: rgba(43, 230, 200, .42);
  transform: translateY(-4px);
  box-shadow: var(--shadow-1);
}

.page-about .scope-card--cups::after {
  background: linear-gradient(90deg, var(--orange), rgba(255, 138, 61, 0) 78%);
}

.page-about .scope-card__tag {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-about .scope-card__count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--cyan);
}

.page-about .scope-card--cups .scope-card__count {
  color: var(--orange);
}

.page-about .scope-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 04 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: clamp(28px, 5vw, 52px);
}

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

.page-about .about-team__copy {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-about .about-team__copy .section__index {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .22em;
  color: var(--cyan-deep);
}

.page-about .about-team__intro {
  margin: 0 0 8px;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text-soft);
}

.page-about .role-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-about .role {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 18px;
  align-items: start;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.page-about .role:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.page-about .role__num {
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: .02em;
  color: var(--orange);
  min-width: 2.2ch;
}

.page-about .role__body {
  display: grid;
  gap: 6px;
}

.page-about .role__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--text);
}

.page-about .role__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 05 长期陪伴 ---------- */
.page-about .about-continue__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  margin-bottom: clamp(30px, 5vw, 52px);
}

.page-about .about-continue__copy {
  display: grid;
  gap: 18px;
  max-width: 62ch;
}

.page-about .about-continue__copy p {
  margin: 0;
  color: var(--text-soft);
  line-height: 1.85;
}

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

.page-about .about-continue__foot {
  display: grid;
  gap: 24px;
  padding: clamp(24px, 4vw, 36px);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  background:
    radial-gradient(70% 120% at 100% 0%, rgba(255, 138, 61, .12), transparent 62%),
    linear-gradient(150deg, rgba(23, 48, 107, .74) 0%, rgba(6, 15, 38, .86) 100%);
}

.page-about .about-continue__meta {
  display: grid;
  gap: 10px;
}

.page-about .about-continue__line {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
  overflow-wrap: anywhere;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 861px) {
  .page-about .about-why__grid {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    align-items: start;
  }

  .page-about .track__item {
    grid-template-columns: 158px minmax(0, 1fr);
    gap: 30px;
    padding: 26px 0 26px 30px;
  }

  .page-about .track__item::before {
    top: 34px;
  }

  .page-about .track__year {
    padding-top: 16px;
    text-align: right;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }

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

  .page-about .about-continue__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: center;
  }

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

  .page-about .about-continue__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1024px) {
  .page-about .scope-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .scope-card:nth-child(2) {
    margin-top: 32px;
  }

  .page-about .scope-card:nth-child(5) {
    margin-top: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .scope-card,
  .page-about .track__panel,
  .page-about .track__summary::after {
    transition: none;
  }

  .page-about .scope-card:hover {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>