.page-about {
  --about-skew: -6deg;
  --about-card-bg: #FFFFFF;
  --about-line-soft: rgba(11, 27, 43, 0.10);
}

/* ---------- 首屏 ---------- */
.page-about .breadcrumb {
  margin-bottom: clamp(14px, 2.4vw, 24px);
}

.page-about .about-hero {
  padding-block: clamp(22px, 3.5vw, 40px) clamp(44px, 7vw, 88px);
}

.page-about .about-hero__frame {
  position: relative;
  padding: clamp(20px, 3.6vw, 48px);
  border: 1px solid var(--hair-light);
  border-radius: var(--r-xl);
  background:
    radial-gradient(130% 100% at 100% 0%, rgba(31, 168, 92, 0.22), transparent 62%),
    linear-gradient(180deg, rgba(22, 50, 74, 0.62), rgba(11, 27, 43, 0.08));
  overflow: hidden;
}

.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(90deg, rgba(69, 224, 206, 0.16) 0 1px, transparent 1px 64px);
  opacity: 0.4;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  align-items: center;
}

.page-about .about-hero h1 {
  margin: 16px 0 0;
}

.page-about .about-hero .lede {
  margin-top: 18px;
  max-width: 36rem;
  color: var(--on-dark-soft);
}

.page-about .about-hero__stats {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: clamp(14px, 2.6vw, 30px);
}

.page-about .about-hero__stats .stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 14px;
  border-left: 2px solid var(--pitch);
}

.page-about .about-hero__stats .stat__value {
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1;
  color: var(--score);
}

.page-about .about-hero__stats .stat__label {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--on-dark-soft);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-about .about-hero__figure {
  margin: 0;
  position: relative;
}

.page-about .about-hero__figure .figure__media {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: var(--r-lg);
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  padding-block: clamp(44px, 6vw, 80px);
}

.page-about .about-timeline__head {
  max-width: 44rem;
}

.page-about .about-timeline__head h2 {
  margin: 14px 0 0;
}

.page-about .about-timeline__head .lede {
  margin-top: 14px;
  color: var(--text-soft);
}

.page-about .tl-jump {
  display: flex;
  gap: 10px;
  flex-wrap: nowrap;
  overflow-x: auto;
  margin: clamp(22px, 3vw, 32px) 0 clamp(26px, 4vw, 44px);
  padding-bottom: 8px;
  scrollbar-width: thin;
}

.page-about .tl-jump__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  padding: 9px 18px;
  border-radius: var(--r-pill);
  border: 1px solid var(--about-line-soft);
  color: var(--ink);
  text-decoration: none;
  font-size: 13px;
  letter-spacing: 0.06em;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .tl-jump__link:hover,
.page-about .tl-jump__link:focus-visible {
  background: var(--pitch);
  border-color: var(--pitch);
  color: #FFFFFF;
  transform: translateY(-2px);
}

.page-about .tl {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: clamp(26px, 3.6vw, 46px);
}

.page-about .tl::before {
  content: "";
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: 15px;
  width: 2px;
  background: repeating-linear-gradient(180deg, var(--pitch) 0 10px, transparent 10px 20px);
  opacity: 0.6;
}

.page-about .tl-node {
  position: relative;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 14px;
  scroll-margin-top: 120px;
}

.page-about .tl-node__marker {
  display: flex;
  justify-content: center;
  padding-top: 26px;
}

.page-about .tl-node__dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--pitch);
  box-shadow: 0 0 0 4px rgba(31, 168, 92, 0.18);
  transition: box-shadow var(--dur) var(--ease);
}

.page-about .tl-node__body {
  padding: clamp(18px, 2.6vw, 28px);
  background: var(--about-card-bg);
  border-radius: var(--r-lg);
  border: 1px solid var(--about-line-soft);
  border-top-left-radius: 0;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .tl-node__body:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}

.page-about .tl-node__year {
  display: inline-block;
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--pitch-deep);
  transform: skewX(var(--about-skew));
}

.page-about .tl-node__body h3 {
  margin: 10px 0 8px;
}

.page-about .tl-node__body p {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-soft);
  max-width: 42ch;
}

.page-about .tl-node__key {
  display: inline-block;
  margin-top: 16px;
  padding: 5px 13px;
  border-radius: var(--r-pill);
  background: var(--pitch-soft);
  color: var(--pitch-deep);
  font-size: 13px;
  letter-spacing: 0.04em;
  transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-about .tl-node:target .tl-node__dot {
  box-shadow: 0 0 0 7px rgba(31, 168, 92, 0.26);
}

.page-about .tl-node:target .tl-node__body {
  outline: 2px solid var(--signal);
  outline-offset: 3px;
}

/* ---------- 内容生产 ---------- */
.page-about .about-editorial {
  padding-block: clamp(44px, 6vw, 88px);
}

.page-about .about-editorial__grid {
  align-items: start;
}

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

.page-about .about-editorial__figure .figure__media {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--r-lg);
}

.page-about .about-editorial h2 {
  margin: 14px 0 0;
}

.page-about .about-editorial .lede {
  margin-top: 14px;
  color: var(--text-soft);
}

.page-about .steps {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .steps__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 16px;
  padding: 16px 18px;
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, 0.74);
  border: 1px solid var(--about-line-soft);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .steps__item:hover {
  transform: translateX(4px);
  background: #FFFFFF;
}

.page-about .steps__num {
  font-size: 24px;
  line-height: 1.1;
  color: var(--pitch-deep);
}

.page-about .steps__item h3 {
  margin: 0 0 6px;
  font-size: 18px;
  line-height: 1.4;
}

.page-about .steps__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-soft);
}

.page-about .slots {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-about .slots__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  border-radius: var(--r-sm);
  background: var(--night);
  color: var(--on-dark);
}

.page-about .slots__time {
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
}

.page-about .slots__text {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--on-dark-soft);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding-block: clamp(44px, 6vw, 88px);
}

.page-about .about-team__head {
  max-width: 42rem;
  margin-bottom: clamp(24px, 3.5vw, 40px);
}

.page-about .about-team__head h2 {
  margin: 14px 0 0;
}

.page-about .about-team__head .lede {
  margin-top: 14px;
  color: var(--on-dark-soft);
}

.page-about .about-team__segment .segment__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-about .about-team__segment .segment__tab {
  padding: 9px 18px;
  border-radius: var(--r-pill);
  border: 1px solid var(--hair-light);
  background: transparent;
  color: var(--on-dark-soft);
  font-size: 14px;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-about .about-team__segment .segment__tab:hover {
  border-color: var(--pitch);
  color: var(--on-dark);
}

.page-about .about-team__segment .segment__tab[aria-selected="true"] {
  background: var(--pitch-soft);
  border-color: var(--pitch-soft);
  color: var(--pitch-deep);
}

.page-about .about-team__segment .segment__tab:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-about .team-panel {
  display: grid;
  gap: 18px;
  padding: clamp(20px, 3vw, 34px);
  border-radius: var(--r-lg);
  background: rgba(22, 50, 74, 0.55);
  border: 1px solid var(--hair-light);
}

.page-about .team-panel[hidden] {
  display: none;
}

.page-about .team-panel__num {
  font-size: clamp(44px, 7vw, 64px);
  line-height: 0.9;
  color: var(--score);
  letter-spacing: -0.03em;
}

.page-about .team-panel__body h3 {
  margin: 0 0 10px;
  color: var(--on-dark);
}

.page-about .team-panel__body p {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--on-dark-soft);
  max-width: 46ch;
}

.page-about .team-panel__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-about .team-panel__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--on-dark);
}

.page-about .team-panel__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 10px;
  height: 2px;
  background: var(--pitch);
}

/* ---------- 合作 ---------- */
.page-about .about-partners {
  padding-block: clamp(44px, 6vw, 88px);
}

.page-about .about-partners__grid {
  align-items: center;
}

.page-about .about-partners__copy h2 {
  margin: 14px 0 0;
}

.page-about .about-partners__copy > p {
  margin: 16px 0 0;
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-soft);
  max-width: 34rem;
}

.page-about .about-partners__stats {
  list-style: none;
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-partners__stats .stat {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-left: 14px;
  border-left: 3px solid var(--pitch-deep);
}

.page-about .about-partners__stats .stat__value {
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1;
  color: var(--pitch-deep);
}

.page-about .about-partners__stats .stat__label {
  font-size: 14px;
  color: var(--text-soft);
}

.page-about .about-partners__copy .ghost-link {
  display: inline-block;
  margin-top: clamp(20px, 3vw, 28px);
  color: var(--pitch-deep);
  font-weight: 500;
}

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

.page-about .about-partners__figure .figure__media {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: var(--r-lg);
}

/* ---------- 专题 ---------- */
.page-about .about-series {
  padding-block: clamp(44px, 6vw, 88px);
}

.page-about .about-series__head {
  max-width: 40rem;
  margin-bottom: clamp(22px, 3vw, 36px);
}

.page-about .about-series__head h2 {
  margin: 14px 0 0;
}

.page-about .about-series__head .lede {
  margin-top: 12px;
  color: var(--text-soft);
}

.page-about .about-series__grid {
  align-items: stretch;
}

.page-about .about-series__card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(20px, 2.6vw, 28px);
  background: #FFFFFF;
  border: 1px solid var(--about-line-soft);
  border-radius: var(--r-lg);
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-series__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-2);
}

.page-about .about-series__card .card__index {
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--haze);
}

.page-about .about-series__card h3 {
  margin: 0;
}

.page-about .about-series__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-soft);
  flex: 1 1 auto;
}

.page-about .about-series__card .pill {
  align-self: flex-start;
  margin-top: 4px;
}

/* ---------- 接下来 ---------- */
.page-about .about-next {
  padding-block: clamp(48px, 7vw, 96px);
}

.page-about .about-next__inner {
  position: relative;
  padding-left: clamp(18px, 3vw, 32px);
  border-left: 3px solid var(--pitch);
}

.page-about .about-next__line {
  margin: 16px 0 0;
  max-width: 30ch;
  font-size: clamp(26px, 4.2vw, 44px);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--on-dark);
}

.page-about .about-next .lede {
  margin-top: 18px;
  max-width: 42rem;
  color: var(--on-dark-soft);
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

/* ---------- 桌面增强 ---------- */
@media (min-width: 900px) {
  .page-about .tl::before {
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about .tl-node {
    grid-template-columns: 1fr 64px 1fr;
    gap: 0;
    align-items: start;
  }

  .page-about .tl-node__marker {
    grid-column: 2;
    grid-row: 1;
    padding-top: 32px;
  }

  .page-about .tl-node__body {
    grid-row: 1;
    margin: 0 26px;
  }

  .page-about .tl-node:nth-child(odd) .tl-node__body {
    grid-column: 3;
    border-top-left-radius: 0;
  }

  .page-about .tl-node:nth-child(even) .tl-node__body {
    grid-column: 1;
    text-align: right;
    border-top-left-radius: var(--r-lg);
    border-top-right-radius: 0;
  }

  .page-about .tl-node:nth-child(even) .tl-node__body p {
    margin-left: auto;
  }

  .page-about .team-panel {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: clamp(24px, 3.5vw, 44px);
    align-items: start;
  }

  .page-about .about-hero__frame::after {
    opacity: 0.55;
  }
}

@media (max-width: 640px) {
  .page-about .slots {
    grid-template-columns: 1fr;
  }

  .page-about .about-next__inner {
    padding-left: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .tl-node__body,
  .page-about .steps__item,
  .page-about .about-series__card,
  .page-about .tl-jump__link {
    transition: none;
  }

  .page-about .tl-node__body:hover,
  .page-about .steps__item:hover,
  .page-about .about-series__card:hover,
  .page-about .tl-jump__link:hover {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>
<<<MAIN_HTML_END>>>