.page-about {
  --about-year: clamp(56px, 14vw, 132px);
  --about-pad: clamp(18px, 3.4vw, 44px);
  --about-gap: clamp(20px, 3vw, 40px);
  background: var(--ink);
  color: var(--paper);
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-about .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: clamp(14px, 2vw, 22px) 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--index);
}

.page-about .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--line-strong);
}

.page-about .breadcrumb__link {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}

.page-about .breadcrumb__link:hover,
.page-about .breadcrumb__link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--rust);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  display: grid;
  grid-template-columns: 1fr;
  border-bottom: 2px solid var(--line-strong);
  margin-top: clamp(16px, 2.6vw, 30px);
}

.page-about .about-hero__text {
  padding: clamp(24px, 4vw, 56px) var(--frame) clamp(30px, 4.6vw, 64px);
}

.page-about .about-hero__tag {
  display: inline-block;
  margin-bottom: clamp(14px, 2vw, 22px);
}

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(38px, 8.4vw, 88px);
  line-height: 0.98;
  letter-spacing: -0.01em;
  transform: skewX(-2deg);
  transform-origin: left bottom;
  color: var(--paper);
  max-width: 16ch;
}

.page-about .about-hero__lede {
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  color: var(--cyan-soft);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .about-hero__visual {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: clamp(20px, 3vw, 34px);
  min-height: 240px;
  padding: var(--about-pad);
  background:
    repeating-linear-gradient(90deg, transparent 0 59px, var(--line) 59px 60px),
    repeating-linear-gradient(0deg, transparent 0 59px, var(--line) 59px 60px),
    linear-gradient(160deg, var(--ink-2) 0%, var(--steel) 100%);
  border-top: 1px solid var(--line);
}

.page-about .hero-plate__label,
.page-about .hero-plate__foot {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--index);
}

.page-about .hero-plate__stage {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
}

.page-about .hero-plate__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(44px, 11vw, 86px);
  line-height: 1;
  color: var(--steel-2);
  -webkit-text-stroke: 1px var(--line-strong);
  text-shadow: 4px 4px 0 rgba(3, 6, 10, 0.8);
}

.page-about .hero-plate__num--now {
  color: var(--rust);
  -webkit-text-stroke: 0;
  text-shadow: 4px 4px 0 rgba(3, 6, 10, 0.9);
}

.page-about .hero-plate__bar {
  flex: 1 1 28px;
  min-width: 28px;
  height: 3px;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--rust) 100%);
}

/* ---------- 起点 ---------- */

.page-about .about-origin {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--about-gap);
  padding-top: clamp(40px, 6vw, 88px);
}

.page-about .about-origin__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4.6vw, 50px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  transform: skewX(-2deg);
  transform-origin: left bottom;
  color: var(--paper);
}

.page-about .about-origin__body p {
  margin: 0 0 1em;
  color: var(--cyan-soft);
  line-height: 1.82;
}

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

/* ---------- 时间轴 ---------- */

.page-about .about-timeline {
  padding-top: clamp(46px, 7vw, 96px);
}

.page-about .about-timeline__head {
  max-width: 74ch;
  margin-bottom: clamp(26px, 4vw, 48px);
}

.page-about .about-timeline__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4.8vw, 52px);
  line-height: 1.06;
  transform: skewX(-2deg);
  transform-origin: left bottom;
  color: var(--paper);
}

.page-about .about-timeline__note {
  margin: 14px 0 0;
  color: var(--index);
  font-size: 15px;
  line-height: 1.8;
}

.page-about .tl {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 2px solid var(--line);
}

.page-about .tl__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: clamp(20px, 3vw, 30px) 0 clamp(26px, 4vw, 44px);
  border-bottom: 1px solid var(--line);
}

.page-about .tl__year {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: var(--about-year);
  line-height: 0.82;
  font-weight: 700;
  color: transparent;
  -webkit-text-stroke: 1px var(--line-strong);
  letter-spacing: -0.02em;
  transition: color 220ms var(--ease), -webkit-text-stroke-color 220ms var(--ease);
}

.page-about .tl__item:hover .tl__year,
.page-about .tl__item:focus-within .tl__year {
  color: rgba(194, 88, 36, 0.18);
  -webkit-text-stroke-color: var(--rust);
}

.page-about .tl__body {
  position: relative;
  padding-left: 20px;
  border-left: 2px solid var(--line);
  transition: border-color 200ms var(--ease), padding-left 200ms var(--ease);
}

.page-about .tl__body::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 8px;
  width: 12px;
  height: 12px;
  background: var(--ink);
  border: 2px solid var(--cyan);
  transition: border-color 200ms var(--ease), transform 200ms var(--ease);
}

.page-about .tl__item:hover .tl__body,
.page-about .tl__item:focus-within .tl__body {
  border-left-color: var(--rust);
}

.page-about .tl__item:hover .tl__body::before,
.page-about .tl__item:focus-within .tl__body::before {
  border-color: var(--lime);
  transform: scale(1.2);
}

.page-about .tl__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--rust);
  border: 1px solid var(--line-rust);
  padding: 3px 8px;
}

.page-about .tl__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(20px, 2.8vw, 30px);
  line-height: 1.16;
  color: var(--paper);
  transition: color 200ms var(--ease);
}

.page-about .tl__item:hover .tl__title {
  color: var(--cyan-soft);
}

.page-about .tl__text {
  margin: 10px 0 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--cyan-soft);
}

.page-about .tl__list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 6px;
  max-width: 60ch;
}

.page-about .tl__list li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--index);
}

.page-about .tl__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 2px;
  background: var(--rust);
}

.page-about .about-timeline__figure {
  margin: clamp(28px, 4vw, 48px) 0 0;
  border: 2px solid var(--line-strong);
  box-shadow: var(--shadow-brut);
}

/* ---------- 数据带 ---------- */

.page-about .about-band {
  margin-top: clamp(48px, 7vw, 96px);
  padding: clamp(26px, 4vw, 46px) 0 0;
  background: var(--steel);
  border-top: 2px solid var(--line-strong);
  border-bottom: 2px solid var(--line-strong);
}

.page-about .about-band__head {
  padding-bottom: clamp(18px, 2.6vw, 28px);
}

.page-about .about-band__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(24px, 4.2vw, 44px);
  line-height: 1.08;
  transform: skewX(-2deg);
  transform-origin: left bottom;
  color: var(--paper);
}

.page-about .about-band__note {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--index);
}

.page-about .band__track {
  display: flex;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
  border-top: 1px solid var(--line);
  -webkit-overflow-scrolling: touch;
}

.page-about .band__track:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}

.page-about .band__cell {
  flex: 0 0 auto;
  width: min(76vw, 260px);
  padding: clamp(18px, 2.4vw, 26px);
  border-right: 1px solid var(--line);
  scroll-snap-align: start;
  transition: background-color 200ms var(--ease);
}

.page-about .band__cell:hover {
  background: var(--steel-2);
}

.page-about .band__num {
  display: block;
  font-size: clamp(30px, 4.4vw, 44px);
  line-height: 1;
  color: var(--paper);
}

.page-about .band__unit {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--rust);
}

.page-about .band__desc {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--index);
}

.page-about .band__track::-webkit-scrollbar {
  height: 8px;
}

.page-about .band__track::-webkit-scrollbar-track {
  background: var(--ink-2);
}

.page-about .band__track::-webkit-scrollbar-thumb {
  background: var(--line-strong);
}

/* ---------- 团队 ---------- */

.page-about .about-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  padding-top: clamp(46px, 7vw, 96px);
}

.page-about .about-team__title {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4.6vw, 50px);
  line-height: 1.06;
  transform: skewX(-2deg);
  transform-origin: left bottom;
  color: var(--paper);
}

.page-about .about-team__text > p.prose {
  margin: 0;
  color: var(--cyan-soft);
  line-height: 1.82;
}

.page-about .team-roles {
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  border-top: 2px solid var(--line-strong);
}

.page-about .team-roles__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .team-roles dt {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  color: var(--rust);
  letter-spacing: 0.02em;
}

.page-about .team-roles dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--cyan-soft);
}

.page-about .about-team__tail {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--index);
  border-left: 3px solid var(--rust);
  padding-left: 14px;
}

.page-about .about-team__figure {
  margin: 0;
  border: 2px solid var(--line);
  box-shadow: var(--shadow-brut-cyan);
}

/* ---------- 流程 ---------- */

.page-about .about-flow {
  padding-top: clamp(46px, 7vw, 96px);
}

.page-about .about-flow__head {
  max-width: 72ch;
  margin-bottom: clamp(22px, 3.4vw, 40px);
}

.page-about .about-flow__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4.6vw, 50px);
  line-height: 1.06;
  transform: skewX(-2deg);
  transform-origin: left bottom;
  color: var(--paper);
}

.page-about .flow {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 2px solid var(--line);
}

.page-about .flow__item {
  background: var(--ink-2);
  padding: clamp(18px, 2.6vw, 28px);
  transition: background-color 200ms var(--ease), box-shadow 200ms var(--ease);
}

.page-about .flow__item:hover,
.page-about .flow__item:focus-within {
  background: var(--steel);
  box-shadow: inset 4px 0 0 var(--rust);
}

.page-about .flow__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--rust);
}

.page-about .flow__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(18px, 2.4vw, 24px);
  color: var(--paper);
}

.page-about .flow__text {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--cyan-soft);
}

/* ---------- 合作生态 ---------- */

.page-about .about-eco {
  margin-top: clamp(48px, 7vw, 96px);
  padding: clamp(30px, 4.6vw, 60px) 0;
  background: linear-gradient(180deg, var(--ink-2) 0%, var(--ink) 100%);
  border-top: 2px solid var(--line-strong);
  border-bottom: 2px solid var(--line-strong);
}

.page-about .about-eco__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  align-items: start;
}

.page-about .about-eco__title {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4.6vw, 50px);
  line-height: 1.06;
  transform: skewX(-2deg);
  transform-origin: left bottom;
  color: var(--paper);
}

.page-about .about-eco__text p.prose {
  margin: 0 0 1em;
  color: var(--cyan-soft);
  line-height: 1.82;
}

.page-about .eco-list {
  margin: clamp(18px, 2.6vw, 26px) 0 clamp(22px, 3vw, 32px);
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .eco-list li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .eco-list__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-about .eco-list__v {
  font-size: 14px;
  line-height: 1.7;
  color: var(--paper);
}

.page-about .about-eco__figure {
  margin: 0;
  border: 2px solid var(--line-strong);
  box-shadow: var(--shadow-brut);
}

/* ---------- 接下来 ---------- */

.page-about .about-next {
  padding-top: clamp(46px, 7vw, 96px);
}

.page-about .about-next__head {
  max-width: 72ch;
  margin-bottom: clamp(22px, 3.4vw, 40px);
}

.page-about .about-next__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4.6vw, 50px);
  line-height: 1.06;
  transform: skewX(-2deg);
  transform-origin: left bottom;
  color: var(--paper);
}

.page-about .next-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 22px);
}

.page-about .next-card {
  position: relative;
  padding: clamp(20px, 2.8vw, 30px);
  background: var(--steel);
  border: 2px solid var(--line);
  transition: border-color 200ms var(--ease), transform 200ms var(--ease), box-shadow 200ms var(--ease);
}

.page-about .next-card:hover,
.page-about .next-card:focus-within {
  border-color: var(--line-strong);
  transform: translate(-3px, -3px);
  box-shadow: var(--shadow-brut);
}

.page-about .next-card__no {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--ink);
  background: var(--cyan);
  padding: 2px 8px;
}

.page-about .next-card__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(18px, 2.4vw, 24px);
  line-height: 1.2;
  color: var(--paper);
}

.page-about .next-card__text {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--cyan-soft);
}

.page-about .about-next__cta {
  margin-top: clamp(24px, 3.4vw, 36px);
  padding: clamp(18px, 2.6vw, 26px);
  border: 2px solid var(--line-rust);
  background: var(--ink-2);
}

.page-about .about-next__cta-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--cyan-soft);
}

.page-about .about-next__cta-text a {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-about .about-next__cta-text a:hover,
.page-about .about-next__cta-text a:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.page-about .btn:focus-visible,
.page-about a:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

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

/* ---------- 中等宽度 ---------- */

@media (min-width: 720px) {
  .page-about .about-origin {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.35fr);
    align-items: start;
  }

  .page-about .tl__item {
    grid-template-columns: minmax(160px, 0.7fr) minmax(0, 2fr);
    gap: clamp(18px, 3vw, 40px);
    align-items: start;
  }

  .page-about .tl__year {
    text-align: right;
    padding-right: 6px;
  }

  .page-about .team-roles__row {
    grid-template-columns: minmax(110px, 0.35fr) minmax(0, 1fr);
    gap: clamp(12px, 2vw, 24px);
    align-items: baseline;
  }

  .page-about .eco-list li {
    grid-template-columns: minmax(120px, 0.34fr) minmax(0, 1fr);
    gap: clamp(12px, 2vw, 24px);
    align-items: baseline;
  }

  .page-about .flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .next-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 桌面 ---------- */

@media (min-width: 1024px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .page-about .about-hero__visual {
    border-top: 0;
    border-left: 2px solid var(--line-strong);
    min-height: 100%;
  }

  .page-about .tl {
    border-top: 2px solid var(--line-strong);
  }

  .page-about .tl__item {
    grid-template-columns: minmax(240px, 0.62fr) minmax(0, 2fr);
    padding: clamp(26px, 3.4vw, 44px) 0 clamp(34px, 4.4vw, 60px);
  }

  .page-about .tl__year {
    font-size: clamp(76px, 9.6vw, 132px);
    line-height: 0.78;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.9fr);
    align-items: start;
  }

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

  .page-about .about-eco__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
    align-items: center;
  }

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

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

  .page-about .band__cell {
    width: 240px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .page-about .next-card:hover,
  .page-about .next-card:focus-within {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>
<<<MAIN_HTML_END>>>