.page-about {
  --about-gap: clamp(56px, 9vw, 128px);
  --about-cut: clamp(26px, 4.2vw, 60px);
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-about .section {
  position: relative;
  padding-block: var(--about-gap);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  padding-top: clamp(26px, 4.6vw, 64px);
}

.page-about .about-hero__crumbs {
  margin-bottom: clamp(18px, 2.6vw, 30px);
}

.page-about .about-hero__box {
  position: relative;
  padding: clamp(30px, 5vw, 64px) clamp(22px, 4.2vw, 56px);
  background: var(--ink-2);
  box-shadow: var(--shadow-hard);
}

.page-about .about-hero__eyebrow {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 0 0 20px;
}

.page-about .about-hero__idx {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--orange);
}

.page-about .about-hero__kicker {
  font-size: 12px;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-about .about-hero__title {
  margin: 0 0 clamp(20px, 2.6vw, 30px);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.2vw, 80px);
  line-height: 1.02;
  letter-spacing: -.005em;
  color: var(--paper);
}

.page-about .about-hero__lead {
  max-width: 66ch;
  margin: 0 0 clamp(24px, 3vw, 34px);
  font-size: clamp(16px, 1.2vw, 18px);
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-hero__points {
  list-style: none;
  margin: 0 0 clamp(26px, 3.2vw, 38px);
  padding: 0;
  display: grid;
  gap: 12px;
  border-top: var(--rule) solid var(--line);
  padding-top: 20px;
}

.page-about .about-hero__points li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.page-about .about-hero__num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2vw, 26px);
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: -.02em;
}

.page-about .about-hero__unit {
  font-size: 15px;
  color: var(--paper);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-about .about-hero__media {
  margin: clamp(26px, 4vw, 52px) 0 0;
}

/* ---------- 品牌演进色带 ---------- */

.page-about .about-band {
  border-top: var(--rule) solid var(--line);
}

.page-about .about-band__head {
  margin-bottom: clamp(26px, 3.6vw, 46px);
}

.page-about .about-band__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 46px);
  line-height: 1.08;
  color: var(--paper);
}

.page-about .about-band__track {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-band__item {
  position: relative;
  padding: 0 0 clamp(26px, 3.6vw, 42px) clamp(32px, 4vw, 48px);
  border-left: var(--rule) solid var(--line);
}

.page-about .about-band__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .about-band__item .timeline-node {
  position: absolute;
  left: -8px;
  top: 3px;
  width: 13px;
  height: 13px;
  border: var(--rule) solid var(--line);
  border-radius: 50%;
  background: var(--ink);
  transition: background .3s var(--ease), border-color .3s var(--ease), transform .3s var(--ease);
}

.page-about .about-band__item.is-lit .timeline-node {
  background: var(--orange);
  border-color: var(--orange);
  transform: scale(1.15);
}

.page-about .about-band__idx {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--cyan);
}

.page-about .about-band__item h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.2vw, 27px);
  line-height: 1.18;
  color: var(--paper);
}

.page-about .about-band__item p {
  max-width: 62ch;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 档案年代（靛紫分区） ---------- */

.page-about .about-epochs {
  background: var(--indigo);
}

.page-about .about-epochs::before {
  content: "";
  position: absolute;
  bottom: 100%;
  left: 0;
  right: 0;
  height: var(--about-cut);
  background: var(--indigo);
  clip-path: polygon(0 100%, 100% 0, 100% 100%);
  pointer-events: none;
}

.page-about .about-epochs__head {
  max-width: 74ch;
  margin-bottom: clamp(26px, 3.6vw, 48px);
}

.page-about .about-epochs__title {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.8vw, 48px);
  line-height: 1.06;
  color: var(--paper);
}

.page-about .about-epochs__lead {
  margin: 0;
  font-size: clamp(15.5px, 1.15vw, 17.5px);
  line-height: 1.8;
  color: rgba(244, 247, 245, .82);
}

.page-about .about-epochs__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: var(--rule) solid rgba(244, 247, 245, .18);
}

.page-about .about-epochs__card {
  display: grid;
  grid-template-columns: minmax(84px, .26fr) 1fr;
  gap: 6px 20px;
  align-items: baseline;
  padding: clamp(18px, 2.4vw, 28px) 0;
  border-bottom: var(--rule) solid rgba(244, 247, 245, .18);
  transition: background .25s var(--ease), padding-left .25s var(--ease);
}

.page-about .about-epochs__card:hover {
  background: rgba(53, 242, 201, .07);
  padding-left: clamp(8px, 1.2vw, 16px);
}

.page-about .about-epochs__year {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.2vw, 38px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--cyan);
}

.page-about .about-epochs__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(244, 247, 245, .82);
}

/* ---------- 关键赛季（酒红分区） ---------- */

.page-about .about-seasons {
  background: var(--wine);
}

.page-about .about-seasons::before {
  content: "";
  position: absolute;
  bottom: 100%;
  left: 0;
  right: 0;
  height: var(--about-cut);
  background: var(--wine);
  clip-path: polygon(0 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-about .about-seasons__head {
  max-width: 74ch;
}

.page-about .about-seasons__title {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.8vw, 48px);
  line-height: 1.06;
  color: var(--paper);
}

.page-about .about-seasons__lead {
  margin: 0;
  font-size: clamp(15.5px, 1.15vw, 17.5px);
  line-height: 1.8;
  color: rgba(244, 247, 245, .82);
}

.page-about .about-seasons__list {
  list-style: none;
  margin: clamp(26px, 3.6vw, 48px) 0 0;
  padding: 0;
  border-top: var(--rule) solid rgba(244, 247, 245, .22);
}

.page-about .about-seasons__item {
  display: grid;
  grid-template-columns: 54px 1fr;
  gap: 4px 20px;
  padding: clamp(20px, 2.6vw, 32px) 0;
  border-bottom: var(--rule) solid rgba(244, 247, 245, .22);
  transition: background .25s var(--ease);
}

.page-about .about-seasons__item:hover {
  background: rgba(255, 138, 61, .12);
}

.page-about .about-seasons__mark {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 42px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--orange);
}

.page-about .about-seasons__item h3 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 2vw, 25px);
  line-height: 1.2;
  color: var(--paper);
}

.page-about .about-seasons__item p {
  margin: 0;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(244, 247, 245, .8);
}

/* ---------- 团队 ---------- */

.page-about .about-team__grid {
  display: grid;
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}

.page-about .about-team__title {
  margin: 12px 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 44px);
  line-height: 1.08;
  color: var(--paper);
}

.page-about .about-team__lead {
  max-width: 62ch;
  margin: 0 0 clamp(24px, 3vw, 34px);
  font-size: clamp(15.5px, 1.15vw, 17.5px);
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-team__roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: var(--rule) solid var(--line);
}

.page-about .about-team__role {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: var(--rule) solid var(--line);
  transition: padding-left .25s var(--ease), background .25s var(--ease);
}

.page-about .about-team__role:hover {
  padding-left: 12px;
  background: rgba(53, 242, 201, .05);
}

.page-about .about-team__role-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-about .about-team__role p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist);
}

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

/* ---------- 覆盖与合作 ---------- */

.page-about .about-reach {
  background: var(--ink-2);
  border-top: var(--rule) solid var(--line);
  border-bottom: var(--rule) solid var(--line);
}

.page-about .about-reach__head {
  max-width: 74ch;
  margin-bottom: clamp(26px, 3.6vw, 48px);
}

.page-about .about-reach__title {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.8vw, 48px);
  line-height: 1.06;
  color: var(--paper);
}

.page-about .about-reach__lead {
  margin: 0;
  font-size: clamp(15.5px, 1.15vw, 17.5px);
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-reach__stats {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-reach__stat {
  display: grid;
  grid-template-columns: minmax(88px, .24fr) 1fr;
  gap: 4px 20px;
  align-items: baseline;
  padding: clamp(18px, 2.4vw, 30px) 0;
  border-top: var(--rule) solid var(--line);
  transition: background .25s var(--ease);
}

.page-about .about-reach__stat:last-of-type {
  border-bottom: var(--rule) solid var(--line);
}

.page-about .about-reach__stat:hover {
  background: rgba(255, 138, 61, .08);
}

.page-about .about-reach__num {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: clamp(26px, 3.6vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--orange);
}

.page-about .about-reach__unit {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(16px, 1.6vw, 20px);
  color: var(--paper);
}

.page-about .about-reach__note {
  grid-column: 2;
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .about-reach__media {
  margin: clamp(28px, 4vw, 52px) 0 0;
}

/* ---------- 年代时间线 ---------- */

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

.page-about .about-timeline__head {
  max-width: 70ch;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-about .about-timeline__title {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.8vw, 48px);
  line-height: 1.06;
  color: var(--paper);
}

.page-about .about-timeline__lead {
  margin: 0;
  font-size: clamp(15.5px, 1.15vw, 17.5px);
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-timeline__switch {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(22px, 3vw, 34px);
}

.page-about .about-timeline__rail {
  list-style: none;
  margin: 0;
  padding: clamp(24px, 3vw, 34px) 0 clamp(26px, 3vw, 36px);
  display: flex;
  gap: clamp(14px, 2vw, 22px);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
  border-top: var(--rule) solid var(--line);
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

.page-about .about-timeline__rail::-webkit-scrollbar {
  height: 6px;
}

.page-about .about-timeline__rail::-webkit-scrollbar-track {
  background: var(--line);
}

.page-about .about-timeline__rail::-webkit-scrollbar-thumb {
  background: var(--cyan);
}

.page-about .about-timeline__stop {
  position: relative;
  flex: 0 0 clamp(236px, 30vw, 306px);
  scroll-snap-align: start;
  padding: clamp(22px, 2.6vw, 30px) clamp(18px, 2vw, 24px) clamp(20px, 2.4vw, 26px);
  background: var(--ink-2);
  border: var(--rule) solid var(--line);
  transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}

.page-about .about-timeline__stop:hover {
  transform: translateY(-4px);
  border-color: var(--cyan);
  box-shadow: var(--shadow-hard);
}

.page-about .about-timeline__stop.is-lit {
  border-color: var(--orange);
}

.page-about .about-timeline__stop .timeline-node {
  position: absolute;
  top: -8px;
  left: clamp(18px, 2vw, 24px);
  width: 13px;
  height: 13px;
  border: var(--rule) solid var(--line);
  border-radius: 50%;
  background: var(--ink);
  transition: background .3s var(--ease), border-color .3s var(--ease);
}

.page-about .about-timeline__stop.is-lit .timeline-node {
  background: var(--orange);
  border-color: var(--orange);
}

.page-about .about-timeline__label {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--cyan);
}

.page-about .about-timeline__stop-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 1.8vw, 21px);
  line-height: 1.22;
  color: var(--paper);
}

.page-about .about-timeline__stop p {
  margin: 0 0 16px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .about-timeline__tag {
  display: inline-block;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--orange);
  border: 2px solid var(--orange);
}

/* ---------- 键盘焦点 ---------- */

.page-about a:focus-visible,
.page-about button:focus-visible,
.page-about [tabindex]:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-about .about-epochs__card {
    grid-template-columns: minmax(150px, .3fr) 1fr;
    gap: 4px 32px;
  }

  .page-about .about-seasons__item {
    grid-template-columns: 70px 1fr;
    gap: 4px 28px;
  }

  .page-about .about-reach__stat {
    grid-template-columns: minmax(150px, .26fr) 1fr;
    gap: 4px 32px;
  }
}

@media (min-width: 980px) {
  .page-about .about-team__grid {
    grid-template-columns: 1.05fr .95fr;
    gap: clamp(40px, 5vw, 72px);
  }

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

  .page-about .about-hero__points li {
    flex-direction: column;
    gap: 6px;
    padding-right: 16px;
    border-right: 2px solid var(--line);
  }

  .page-about .about-hero__points li:last-child {
    border-right: 0;
  }
}

@media (max-width: 520px) {
  .page-about {
    --about-cut: 20px;
  }

  .page-about .about-epochs__card,
  .page-about .about-reach__stat {
    grid-template-columns: 1fr;
  }

  .page-about .about-reach__num {
    grid-row: auto;
  }

  .page-about .about-reach__note {
    grid-column: 1;
  }

  .page-about .about-timeline__stop {
    flex-basis: 82vw;
  }
}
<<<END>>>