.page-about {
  --about-track: rgba(159, 184, 178, .14);
  --about-rule: rgba(63, 245, 208, .2);
  --about-shadow: 0 24px 60px rgba(3, 20, 15, .45);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  padding-top: clamp(16px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(24px, 4vw, 48px);
  position: relative;
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: -20% -10% auto auto;
  width: min(560px, 70vw);
  height: min(560px, 70vw);
  background: radial-gradient(circle at 70% 30%, rgba(63, 245, 208, .16), rgba(63, 245, 208, 0) 68%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 56px);
  align-items: end;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.9rem, 6.4vw, 4.6rem);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--paper);
  margin: .4em 0 .5em;
}

.page-about .about-hero__lead .lede {
  max-width: 34em;
}

.page-about .about-hero__side {
  border-top: 1px solid var(--about-rule);
  padding-top: 18px;
}

.page-about .about-hero__side-label {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan-soft);
  margin: 0 0 16px;
}

.page-about .about-hero__side-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-hero__side-list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  color: var(--gray);
  font-size: .95rem;
}

.page-about .about-hero__side-list .data-num {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--cyan);
  min-width: 3.2em;
}

/* ---------- 起点叙事 ---------- */
.page-about .about-origin__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
}

.page-about .about-origin__copy h2 {
  margin: .3em 0 .6em;
}

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

/* ---------- 赛季覆盖 ---------- */
.page-about .about-coverage__head {
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-about .about-coverage__note {
  max-width: 34em;
}

.page-about .cov-list {
  display: grid;
  gap: clamp(16px, 2.4vw, 24px);
}

.page-about .cov-row {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-areas:
    "label num"
    "track track";
  row-gap: 10px;
  column-gap: 16px;
  align-items: center;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  background: linear-gradient(90deg, rgba(14, 58, 51, .5), rgba(14, 58, 51, .12));
  transition: background .3s ease, transform .3s ease;
}

.page-about .cov-row:hover {
  background: linear-gradient(90deg, rgba(14, 58, 51, .82), rgba(63, 245, 208, .08));
  transform: translateX(4px);
}

.page-about .cov-label {
  grid-area: label;
  font-size: .82rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-about .cov-num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: .9rem;
  color: var(--paper);
  white-space: nowrap;
}

.page-about .cov-num .data-num {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--cyan);
}

.page-about .cov-track {
  grid-area: track;
  display: block;
  height: 6px;
  border-radius: var(--radius-pill);
  background: var(--about-track);
  overflow: hidden;
}

.page-about .cov-fill {
  display: block;
  height: 100%;
  width: var(--fill, 0%);
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--orange), var(--cyan));
  transform-origin: left center;
}

.page-about .about-coverage__foot {
  margin: clamp(24px, 4vw, 36px) 0 0;
  font-size: .9rem;
  color: var(--gray);
  max-width: 40em;
}

/* ---------- 合作与内容来源 ---------- */
.page-about .about-partners__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 56px);
  align-items: center;
}

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

.page-about .about-partners__copy h2 {
  margin: .3em 0 .6em;
}

.page-about .about-partners__cta {
  margin: 8px 0 0;
}

/* ---------- 团队分工 ---------- */
.page-about .about-team__head {
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-about .about-team__chips {
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-about .about-team__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
}

.page-about .team-card {
  position: relative;
  padding: clamp(22px, 3.4vw, 34px);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(10, 44, 38, .92), rgba(6, 35, 31, .72));
  box-shadow: inset 0 0 0 1px rgba(63, 245, 208, .12);
  transition: box-shadow .3s ease, transform .3s ease;
}

.page-about .team-card:hover {
  box-shadow: inset 0 0 0 1px rgba(63, 245, 208, .34);
  transform: translateY(-4px);
}

.page-about .team-card__idx {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  color: rgba(63, 245, 208, .28);
  margin: 0 0 12px;
}

.page-about .team-card__name {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3vw, 1.75rem);
  font-weight: 700;
  color: var(--paper);
  letter-spacing: -.01em;
  margin: 0 0 12px;
}

.page-about .team-card__duty {
  margin: 0 0 18px;
  color: var(--gray);
  line-height: 1.75;
  font-size: .95rem;
}

.page-about .team-card__points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .team-card__points li {
  position: relative;
  padding-left: 20px;
  font-size: .86rem;
  color: var(--cyan-soft);
}

.page-about .team-card__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 12px;
  height: 1px;
  background: var(--orange);
}

.page-about .about-team__figure {
  margin: clamp(28px, 5vw, 52px) 0 0;
}

/* ---------- 版本时间线 ---------- */
.page-about .about-versions__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
}

.page-about .about-versions__intro h2 {
  margin: .3em 0 .6em;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 6px 0 6px 30px;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 14px;
  bottom: 24px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan) 0%, rgba(63, 245, 208, .22) 72%, rgba(63, 245, 208, 0) 100%);
}

.page-about .tl-node {
  position: relative;
  padding-bottom: clamp(26px, 4vw, 40px);
}

.page-about .tl-node:last-child {
  padding-bottom: 0;
}

.page-about .tl-node::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 9px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 138, 61, .16);
  transition: box-shadow .3s ease, background .3s ease;
}

.page-about .tl-node:hover::before {
  background: var(--cyan);
  box-shadow: 0 0 0 8px rgba(63, 245, 208, .16);
}

.page-about .tl-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 14px;
}

.page-about .tl-year {
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 3.4vw, 2rem);
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: -.01em;
}

.page-about .tl-name {
  font-family: var(--font-display);
  font-size: clamp(1.02rem, 2.2vw, 1.2rem);
  font-weight: 600;
  color: var(--paper);
  margin: 0;
}

.page-about .tl-detail {
  margin: 10px 0 0;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--gray);
  max-width: 40em;
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  padding-bottom: clamp(56px, 9vw, 110px);
}

.page-about .about-next__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 40px);
  align-items: center;
  padding: clamp(28px, 5vw, 56px);
  border-radius: var(--radius-lg);
  background: linear-gradient(120deg, rgba(14, 58, 51, .95), rgba(6, 35, 31, .7));
  box-shadow: inset 0 0 0 1px rgba(63, 245, 208, .16);
  position: relative;
  overflow: hidden;
}

.page-about .about-next__inner::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -80px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 138, 61, .2), rgba(255, 138, 61, 0) 70%);
  pointer-events: none;
}

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

.page-about .about-next__copy h2 {
  margin: .3em 0 .5em;
}

.page-about .about-next__actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-team__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .cov-row {
    grid-template-columns: minmax(140px, 180px) 1fr auto;
    grid-template-areas: "label track num";
    row-gap: 0;
    align-items: center;
  }

  .page-about .cov-track {
    align-self: center;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    column-gap: clamp(32px, 6vw, 80px);
    align-items: end;
  }

  .page-about .about-hero__side {
    padding-bottom: 10px;
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    align-items: center;
  }

  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }

  .page-about .about-versions__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 8fr);
    column-gap: clamp(32px, 6vw, 72px);
  }

  .page-about .about-versions__intro {
    position: sticky;
    top: 96px;
  }

  .page-about .about-next__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

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

  .page-about .tl-detail {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height .36s ease, opacity .36s ease, margin-top .36s ease;
  }

  .page-about .tl-node:hover .tl-detail,
  .page-about .tl-node:focus-within .tl-detail {
    max-height: 240px;
    opacity: 1;
  }
}

@media (min-width: 1180px) {
  .page-about .about-origin__figure {
    transform: translateY(-8px);
  }

  .page-about .about-partners__figure {
    transform: translateY(8px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .cov-fill,
  .page-about .tl-detail,
  .page-about .team-card,
  .page-about .cov-row {
    transition: none;
  }

  .page-about .team-card:hover,
  .page-about .cov-row:hover {
    transform: none;
  }
}
<<<END>>>

.page-about {
  --fill: currentColor;
}