.page-about {
  background: var(--ink);
  color: var(--text);
}

.page-about a:focus-visible,
.page-about .team-card__link:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 20px 0 46px;
  background:
    radial-gradient(92% 68% at 96% -6%, rgba(107, 63, 160, .46), transparent 64%),
    linear-gradient(180deg, #0b2337 0%, var(--ink) 72%);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -22%;
  bottom: -34%;
  width: 84%;
  height: 62%;
  background: linear-gradient(135deg, rgba(214, 47, 69, .30), rgba(107, 63, 160, 0) 72%);
  clip-path: polygon(22% 0, 100% 16%, 84% 100%, 0 76%);
  pointer-events: none;
}

.page-about .about-hero .wrap {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 26px;
  margin-top: 18px;
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  font-family: var(--sans);
  font-weight: 800;
  font-size: clamp(31px, 7.6vw, 58px);
  line-height: 1.07;
  letter-spacing: -.02em;
  color: var(--cream);
}

.page-about .about-hero__text {
  margin: 16px 0 0;
  max-width: 48ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-about .about-hero__aside {
  border: 2px solid var(--line);
  border-radius: var(--r-lg);
  padding: 16px 18px 18px;
  background: linear-gradient(160deg, rgba(14, 42, 63, .92), rgba(7, 26, 43, .62));
  box-shadow: var(--shadow-hard);
}

.page-about .about-mark {
  display: block;
  width: 100%;
  height: auto;
  max-height: 300px;
}

.page-about .about-hero__cap {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-warm);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .about-stats {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 2px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-about .about-stats .stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px;
  background: #0a1f31;
}

.page-about .about-stats .stat__value {
  font-family: var(--sans);
  font-size: clamp(21px, 4.6vw, 30px);
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--cream);
}

.page-about .about-stats .stat__label {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--mist);
}

.page-about .about-index {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.page-about .about-index__item {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px 7px 8px;
  border: 1.5px solid var(--line);
  border-radius: var(--r-pill);
  font-size: 13px;
  color: var(--text);
  text-decoration: none;
  background: rgba(5, 9, 15, .35);
  transition: border-color .25s var(--ease), color .25s var(--ease), background .25s var(--ease);
}

.page-about .about-index__item span {
  display: inline-grid;
  place-items: center;
  min-width: 22px;
  height: 22px;
  border-radius: var(--r-pill);
  background: rgba(214, 47, 69, .18);
  color: var(--crimson);
  font-weight: 800;
  font-size: 11px;
}

.page-about .about-index__item:hover,
.page-about .about-index__item:focus-visible {
  border-color: var(--lime);
  color: var(--cream);
  background: rgba(168, 224, 99, .10);
}

/* ---------- 通用章节骨架 ---------- */
.page-about .about-sec {
  position: relative;
  scroll-margin-top: 96px;
}

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

.page-about .about-sec__rail {
  display: none;
}

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

.page-about .chapter {
  margin-bottom: 18px;
}

.page-about .about-p {
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--text);
}

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

.page-about .about-p--tail {
  margin-top: 20px;
  color: var(--mist);
}

.page-about .about-pull {
  margin: 22px 0 0;
  padding: 20px 18px;
  border-left: 4px solid var(--crimson);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: linear-gradient(120deg, rgba(107, 63, 160, .26), rgba(7, 26, 43, .2));
}

.page-about .about-pull p {
  margin: 0;
  font-family: var(--sans);
  font-size: clamp(19px, 4.4vw, 26px);
  font-weight: 800;
  line-height: 1.45;
  color: var(--cream);
  letter-spacing: -.01em;
}

.page-about .about-pull cite {
  display: block;
  margin-top: 10px;
  font-style: normal;
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--copper);
}

/* ---------- 时间轴 ---------- */
.page-about .tl {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  position: relative;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 8px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, rgba(201, 151, 78, .85), rgba(201, 151, 78, .08));
}

.page-about .tl-node {
  position: relative;
  padding: 0 0 26px 40px;
}

.page-about .tl-node::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 3px solid var(--copper);
  background: var(--ink);
  transition: border-color .25s var(--ease), background .25s var(--ease), box-shadow .25s var(--ease);
}

.page-about .tl-node:hover::before {
  border-color: var(--lime);
  background: var(--lime);
  box-shadow: 0 0 0 6px rgba(168, 224, 99, .14);
}

.page-about .tl-year {
  margin: 0;
  font-family: var(--sans);
  font-size: 25px;
  font-weight: 800;
  letter-spacing: .04em;
  color: var(--copper);
}

.page-about .tl-title {
  margin: 6px 0 8px;
  font-family: var(--sans);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--cream);
}

.page-about .tl-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 26px 0 0;
}

.page-about .about-figure .media-frame {
  border: 2px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  box-shadow: var(--shadow-hard);
  background: var(--ink-2);
}

.page-about .about-figure .media-frame__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
  border-left: 2px solid var(--line-warm);
  padding-left: 10px;
}

/* ---------- 团队 ---------- */
.page-about .team-grid {
  display: grid;
  gap: 16px;
  margin-top: 22px;
}

.page-about .team-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 18px 20px;
  border: 2px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(168deg, rgba(14, 42, 63, .94), rgba(7, 26, 43, .78));
  box-shadow: var(--shadow-hard);
  transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}

.page-about .team-card:hover,
.page-about .team-card:focus-within {
  transform: translateY(-4px);
  border-color: var(--grape-lift);
  box-shadow: var(--shadow-lift);
}

.page-about .team-card__num {
  font-family: var(--sans);
  font-size: 36px;
  font-weight: 800;
  line-height: 1;
  color: var(--crimson);
  letter-spacing: -.02em;
}

.page-about .team-card__title {
  margin: 0;
  font-family: var(--sans);
  font-size: 18px;
  font-weight: 700;
  color: var(--cream);
}

.page-about .team-card__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
  flex: 1 1 auto;
}

.page-about .team-card__link {
  align-self: flex-start;
  margin-top: 6px;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1.5px solid rgba(168, 224, 99, .45);
  padding-bottom: 2px;
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.page-about .team-card__link:hover {
  color: var(--cream);
  border-color: var(--cream);
}

.page-about .about-figure--team {
  margin-top: 24px;
}

/* ---------- 合作生态 ---------- */
.page-about .eco-net {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.page-about .eco-hub {
  padding: 20px 18px;
  border: 2px solid var(--grape);
  border-radius: var(--r-lg);
  background:
    radial-gradient(110% 120% at 0% 0%, rgba(154, 107, 214, .38), transparent 62%),
    linear-gradient(160deg, #12283c, #0a1b2a);
  box-shadow: var(--shadow-hard);
}

.page-about .eco-hub__label {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: .26em;
  color: var(--copper);
}

.page-about .eco-hub__title {
  margin: 10px 0 8px;
  font-family: var(--sans);
  font-size: 20px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--cream);
}

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

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

.page-about .eco-item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 14px 14px 15px;
  border: 2px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(14, 42, 63, .55);
  transition: border-color .25s var(--ease), background .25s var(--ease);
}

.page-about .eco-item:hover {
  border-color: var(--lime);
  background: rgba(168, 224, 99, .07);
}

.page-about .eco-item__num {
  font-family: var(--sans);
  font-size: 28px;
  font-weight: 800;
  line-height: 1;
  color: var(--grape-lift);
  letter-spacing: -.02em;
}

.page-about .eco-item__title {
  margin: 0 0 5px;
  font-family: var(--sans);
  font-size: 15.5px;
  font-weight: 700;
  color: var(--cream);
}

.page-about .eco-item__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 区域覆盖 ---------- */
.page-about .coverage {
  display: grid;
  gap: 14px;
  margin-top: 20px;
  padding: 20px 18px 22px;
  border: 2px solid var(--line-warm);
  border-radius: var(--r-lg);
  background: linear-gradient(150deg, rgba(107, 63, 160, .30), rgba(7, 26, 43, .92) 72%);
}

.page-about .coverage__num {
  margin: 0;
  font-family: var(--sans);
  font-size: clamp(56px, 14vw, 88px);
  font-weight: 800;
  line-height: .84;
  letter-spacing: -.04em;
  color: var(--cream);
}

.page-about .coverage__title {
  margin: 0 0 8px;
  font-family: var(--sans);
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--cream);
}

.page-about .coverage__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--text);
}

.page-about .coverage__chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
}

.page-about .coverage__chip {
  padding: 6px 12px;
  border-radius: var(--r-pill);
  border: 1.5px solid var(--line);
  font-size: 12.5px;
  color: var(--mist);
}

.page-about .coverage__chip--key {
  border-color: var(--lime);
  color: var(--lime);
  background: rgba(168, 224, 99, .10);
}

/* ---------- 荣誉 ---------- */
.page-about .honor-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .honor {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 15px 16px;
  border-left: 3px solid var(--copper);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  background: rgba(14, 42, 63, .62);
}

.page-about .honor__num {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .1em;
  color: var(--copper);
  padding-top: 3px;
}

.page-about .honor__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .honor__text strong {
  display: block;
  margin-bottom: 4px;
  font-family: var(--sans);
  font-size: 15.5px;
  font-weight: 700;
  color: var(--cream);
}

.page-about .case-stats {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 2px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}

.page-about .case-stats .stat {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 15px 14px;
  background: #0a1f31;
}

.page-about .case-stats .stat__value {
  font-family: var(--sans);
  font-size: clamp(20px, 4.4vw, 26px);
  font-weight: 800;
  color: var(--cream);
}

.page-about .case-stats .stat__label {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--mist);
}

/* ---------- 结尾召唤 ---------- */
.page-about .about-cta {
  padding: 44px 0 60px;
}

.page-about .about-cta__inner {
  display: grid;
  gap: 14px;
  padding: 26px 20px 28px;
  border: 2px solid var(--crimson);
  border-radius: var(--r-lg);
  background:
    radial-gradient(100% 120% at 100% 0%, rgba(214, 47, 69, .32), transparent 60%),
    linear-gradient(150deg, rgba(107, 63, 160, .34), rgba(7, 26, 43, .94) 70%);
  box-shadow: var(--shadow-hard);
}

.page-about .about-cta__title {
  margin: 0;
  font-family: var(--sans);
  font-size: clamp(22px, 5.2vw, 34px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--cream);
}

.page-about .about-cta__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--text);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

/* ---------- 桌面增强 ---------- */
@media (min-width: 720px) {
  .page-about .team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .case-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .coverage {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 22px;
    padding: 24px 24px 26px;
  }

  .page-about .about-cta__inner {
    padding: 34px 32px 36px;
  }
}

@media (min-width: 860px) {
  .page-about .eco-net {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1.15fr);
    align-items: stretch;
  }

  .page-about .eco-hub {
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    padding: 26px 0 60px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: center;
    gap: 40px;
  }

  .page-about .about-hero__actions {
    margin-top: 28px;
  }

  .page-about .about-sec__inner {
    grid-template-columns: 74px minmax(0, 1fr);
    gap: 30px;
  }

  .page-about .about-sec__rail {
    display: block;
    position: relative;
  }

  .page-about .about-sec__rail::before {
    content: "";
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 1px;
    background: linear-gradient(180deg, rgba(201, 151, 78, .62), rgba(201, 151, 78, .04));
  }

  .page-about .about-sec__rail span {
    position: sticky;
    top: 104px;
    display: inline-block;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    padding: 8px 0;
    background: var(--ink);
    font-size: 12px;
    letter-spacing: .34em;
    color: var(--copper);
  }

  .page-about .about-p {
    font-size: 16.5px;
  }

  .page-about .tl-node {
    padding-bottom: 30px;
  }

  .page-about .team-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-figure {
    margin-top: 32px;
  }
}

@media (min-width: 1200px) {
  .page-about .about-hero h1 {
    max-width: 15ch;
  }

  .page-about .about-mark {
    max-height: 340px;
  }
}
<<<END>>>