.page-about {
  --about-ink-soft: #cfddd7;
  --about-band: 26px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-top: 30px;
  padding-bottom: 46px;
  background: linear-gradient(114deg, var(--night) 0 54%, var(--deep) 54% 100%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    -24deg,
    transparent 0 52px,
    rgba(79, 240, 208, .05) 52px 53px
  );
  pointer-events: none;
}

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

.page-about .about-hero .eyebrow {
  margin-top: 26px;
  color: var(--cyan);
}

.page-about .about-hero h1 {
  margin: 10px 0 0;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 30px;
  line-height: 1.28;
  letter-spacing: .01em;
  color: var(--paper);
  max-width: 22ch;
}

.page-about .about-hero__lead {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--about-ink-soft);
}

/* 顶部长轴 */
.page-about .about-axis {
  margin-top: 36px;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.page-about .about-axis__list {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.page-about .about-axis__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-axis__item {
  flex: 1 0 148px;
  scroll-snap-align: start;
  border-left: 1px dashed var(--line-dark);
}

.page-about .about-axis__item:first-child {
  border-left: 0;
}

.page-about .about-axis__link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 18px 18px;
  min-height: 48px;
  text-decoration: none;
  transition: background-color .24s ease;
}

.page-about .about-axis__year {
  font-family: var(--font-mono);
  font-size: 20px;
  letter-spacing: .04em;
  color: var(--amber);
}

.page-about .about-axis__label {
  font-size: 13px;
  line-height: 1.55;
  color: var(--muted);
  transition: color .24s ease;
}

/* ---------- 宽窄交替 ---------- */
.page-about .about-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  margin-top: 34px;
}

/* ---------- 版本脉络 ---------- */
.page-about .about-eras {
  margin: 0;
  padding: 0 0 0 26px;
  list-style: none;
  border-left: 1px solid var(--line-dark);
}

.page-about .era {
  position: relative;
  padding-bottom: 34px;
  scroll-margin-top: 84px;
}

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

.page-about .era::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 9px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--grass-lift);
  box-shadow: 0 0 0 4px rgba(63, 164, 106, .16);
}

.page-about .era__year {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .14em;
  color: var(--amber);
}

.page-about .era__title {
  margin: 0 0 10px;
  font-size: 20px;
  font-weight: 600;
  line-height: 1.45;
  color: var(--paper);
  max-width: 26ch;
}

.page-about .era__body {
  margin: 0;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--about-ink-soft);
}

.page-about .era__body a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 图片与索引卡 ---------- */
.page-about .about-fig {
  margin: 0;
}

.page-about .about-fig img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  clip-path: var(--cut-shape);
  background: var(--night);
}

.page-about .about-fig--wide img {
  aspect-ratio: 3 / 2;
}

.page-about .about-fig--tall img {
  aspect-ratio: 3 / 4;
}

.page-about .about-fig__cap {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .about-note {
  margin-top: 22px;
  padding: 20px 22px 22px;
  background: linear-gradient(150deg, var(--indigo), #16143a);
  clip-path: var(--cut-shape);
}

.page-about .about-note__k {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-about .about-note__v {
  margin: 0 0 8px;
  font-size: 21px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-note__d {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: rgba(244, 247, 243, .7);
}

/* ---------- 四条内容线 ---------- */
.page-about .lane {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 26px 0;
  border-top: 1px solid var(--line-light);
}

.page-about .lane:last-child {
  border-bottom: 1px solid var(--line-light);
}

.page-about .lane__idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--grass);
}

.page-about .lane__title {
  margin: 0 0 10px;
  font-size: 20px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
}

.page-about .lane__body p {
  margin: 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted-ink);
}

.page-about .lane:nth-child(even) .lane__body p {
  max-width: 52ch;
}

.page-about .lane__body a {
  color: var(--grass);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 团队 ---------- */
.page-about .team-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.page-about .team-card {
  padding: 24px 24px 26px;
  background: linear-gradient(158deg, rgba(31, 111, 74, .24), rgba(7, 17, 15, .62));
  border: 1px solid var(--line-dark);
  clip-path: var(--cut-shape);
  transition: transform .3s cubic-bezier(.22, .7, .3, 1), background-color .3s ease;
}

.page-about .team-card__num {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 52px;
  line-height: .95;
  letter-spacing: .01em;
  color: var(--amber);
}

.page-about .team-card__unit {
  margin-left: 6px;
  font-family: var(--font-heading);
  font-size: 15px;
  color: var(--muted);
}

.page-about .team-card__role {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .team-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

@media (hover: hover) {
  .page-about .about-axis__link:hover {
    background-color: rgba(31, 111, 74, .3);
  }

  .page-about .about-axis__link:hover .about-axis__label {
    color: var(--paper);
  }

  .page-about .team-card:hover {
    transform: translate(5px, -5px);
    background: linear-gradient(158deg, rgba(31, 111, 74, .42), rgba(7, 17, 15, .72));
  }
}

/* ---------- 规模 ---------- */
.page-about .scale {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 64px 0 68px;
  color: var(--paper);
}

.page-about .scale__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .scale__scrim {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(178deg, rgba(7, 17, 15, .86) 0%, rgba(14, 36, 32, .95) 100%);
}

.page-about .scale__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px 18px;
  margin-top: 32px;
  padding-top: 30px;
  border-top: 1px solid var(--line-dark);
}

.page-about .scale__value {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 40px;
  line-height: 1;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-about .scale__label {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .scale__foot {
  margin: 30px 0 0;
  padding-top: 22px;
  border-top: 1px dashed var(--line-dark);
  max-width: 70ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--about-ink-soft);
}

/* ---------- 赛季节奏 ---------- */
.page-about .rhythm {
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-light);
}

.page-about .rhythm__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 20px 0;
  border-bottom: 1px solid var(--line-light);
}

.page-about .rhythm__when {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .04em;
  color: var(--grass);
}

.page-about .rhythm__what {
  margin: 0;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.82;
  color: var(--muted-ink);
}

/* ---------- 协作与认可 ---------- */
.page-about .partner-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  margin-top: 30px;
}

.page-about .partner-grid__main p {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--about-ink-soft);
}

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

.page-about .partner-grid__main a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.page-about .credit-list li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(244, 247, 243, .82);
}

.page-about .credit-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 10px;
  height: 2px;
  background: var(--amber);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  padding: 8px 0 4px;
}

.page-about .about-cta .section__index {
  margin-bottom: 10px;
}

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

.page-about .about-cta p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--about-ink-soft);
}

.page-about .about-cta .cluster {
  margin-top: 24px;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 700px) {
  .page-about .about-hero h1 {
    font-size: 38px;
  }

  .page-about .lane {
    grid-template-columns: 62px minmax(0, 1fr);
    gap: 22px;
    align-items: start;
  }

  .page-about .lane__idx {
    padding-top: 7px;
  }

  .page-about .rhythm__row {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 30px;
    align-items: baseline;
  }

  .page-about .partner-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 44px;
  }

  .page-about .scale__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px 26px;
  }

  .page-about .scale__value {
    font-size: 46px;
  }
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-about .about-hero {
    padding-top: 44px;
    padding-bottom: 62px;
  }

  .page-about .about-hero h1 {
    font-size: 44px;
  }

  .page-about .about-hero__lead {
    font-size: 17px;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
    margin-top: 40px;
  }

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

  .page-about .about-split--flip .about-split__narrow {
    order: 1;
  }

  .page-about .about-split--flip .about-split__wide {
    order: 2;
  }

  .page-about .about-split__narrow {
    position: sticky;
    top: 88px;
  }

  .page-about .team-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 18px;
    margin-top: 38px;
  }

  .page-about .team-card:nth-child(1) {
    grid-column: span 3;
  }

  .page-about .team-card:nth-child(2) {
    grid-column: span 3;
  }

  .page-about .team-card:nth-child(3) {
    grid-column: span 4;
  }

  .page-about .team-card:nth-child(4) {
    grid-column: span 2;
  }

  .page-about .scale {
    padding: 88px 0 92px;
  }

  .page-about .scale__value {
    font-size: 58px;
  }

  .page-about .about-axis__year {
    font-size: 22px;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-axis__link,
  .page-about .about-axis__label,
  .page-about .team-card {
    transition: none;
  }

  .page-about .team-card:hover {
    transform: none;
  }

  .page-about .about-axis__list {
    scroll-behavior: auto;
  }
}
<<<END>>>