.page-about {
  --about-ink: #061826;
  --about-ink-soft: #3d5566;
  --about-hairline: rgba(6, 24, 38, .14);
  background: var(--abyss);
  color: var(--white);
  overflow-x: hidden;
}

.page-about .about-crumbs-wrap {
  padding-top: clamp(14px, 3vw, 26px);
}

.page-about .about-crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--mist);
}

.page-about .about-crumbs a {
  color: var(--mist);
  text-decoration: none;
}

.page-about .about-crumbs a:hover,
.page-about .about-crumbs a:focus-visible {
  color: var(--cyan);
}

.page-about .about-crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--steel);
}

/* 章节刻度导航 */
.page-about .about-rail {
  display: none;
}

@media (min-width: 1360px) {
  .page-about .about-rail {
    display: flex;
    position: fixed;
    right: clamp(12px, 1.6vw, 28px);
    top: 50%;
    transform: translateY(-50%);
    flex-direction: column;
    gap: 14px;
    z-index: 5;
  }

  .page-about .about-rail__link {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    letter-spacing: .16em;
    color: var(--mist);
    text-decoration: none;
    transition: color .18s var(--ease);
  }

  .page-about .about-rail__link::before {
    content: "";
    width: 14px;
    height: 1px;
    background: currentColor;
    transition: width .2s var(--ease);
  }

  .page-about .about-rail__link span {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: -.02em;
    color: var(--cyan-deep);
  }

  .page-about .about-rail__link:hover,
  .page-about .about-rail__link:focus-visible {
    color: var(--cyan);
  }

  .page-about .about-rail__link:hover::before,
  .page-about .about-rail__link:focus-visible::before {
    width: 28px;
  }
}

/* 首屏 */
.page-about .about-hero {
  position: relative;
  padding: clamp(26px, 5vw, 54px) 0 clamp(52px, 8vw, 96px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -28%;
  right: -12%;
  width: min(70vw, 760px);
  aspect-ratio: 1;
  background: radial-gradient(circle, rgba(53, 230, 218, .13), transparent 62%);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(28px, 5vw, 56px);
}

.page-about .about-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-about .about-hero h1 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(2.3rem, 7vw, 4.9rem);
  line-height: .96;
  letter-spacing: -.01em;
  max-width: 15em;
}

.page-about .about-hero__lede {
  margin: clamp(18px, 3vw, 26px) 0 0;
  max-width: 620px;
  font-size: clamp(15px, 2.4vw, 17px);
  line-height: 1.8;
  color: var(--white);
}

.page-about .about-hero__sub {
  margin: 12px 0 0;
  max-width: 600px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 4vw, 32px);
}

.page-about .about-hero__side {
  display: grid;
  gap: 20px;
  align-content: start;
}

.page-about .about-hero__figure {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--steel);
}

.page-about .about-figure__num {
  font-family: var(--font-mono);
  font-size: clamp(3.2rem, 10vw, 5.4rem);
  line-height: .82;
  letter-spacing: -.05em;
  color: var(--cyan);
}

.page-about .about-figure__cap {
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .1em;
  color: var(--mist);
  max-width: 9em;
}

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

.page-about .about-hero__facts li {
  display: grid;
  gap: 4px;
  padding-left: 12px;
  border-left: 2px solid var(--cyan-deep);
}

.page-about .about-hero__facts strong {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--white);
  letter-spacing: -.01em;
}

.page-about .about-hero__facts span {
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--mist);
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, .55fr);
    align-items: end;
  }
}

/* 章节骨架 */
.page-about .about-section {
  position: relative;
  padding: clamp(52px, 8vw, 104px) 0;
}

.page-about .about-section--console {
  background: var(--console);
}

.page-about .about-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 14px;
  align-items: baseline;
  margin-bottom: clamp(24px, 4vw, 42px);
}

.page-about .about-head__num {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: -.02em;
  color: var(--cyan-deep);
  writing-mode: vertical-rl;
  text-orientation: mixed;
  align-self: start;
  padding-top: 4px;
}

.page-about .about-head__title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.7rem, 5vw, 2.9rem);
  line-height: 1.02;
  letter-spacing: -.01em;
}

.page-about .about-head__sub {
  margin: 0;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--mist);
}

.page-about .about-head--ink .about-head__title {
  color: var(--about-ink);
}

.page-about .about-head--ink .about-head__sub {
  color: var(--about-ink-soft);
}

.page-about .about-head--ink .about-head__num {
  color: #0e8c85;
}

.page-about .about-link {
  display: inline-block;
  margin-top: 6px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 230, 218, .4);
  padding-bottom: 2px;
}

.page-about .about-link:hover,
.page-about .about-link:focus-visible {
  border-bottom-color: var(--cyan);
}

/* 01 自述 */
.page-about .about-story__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-about .about-story__body p {
  margin: 0 0 16px;
  max-width: 680px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-story__lead {
  font-size: clamp(16px, 2.6vw, 18px) !important;
  line-height: 1.8 !important;
  color: var(--white) !important;
}

.page-about .about-story__aside {
  display: grid;
  gap: 18px;
  align-content: start;
  padding-top: 16px;
  border-top: 1px solid var(--steel);
}

.page-about .about-mini {
  display: grid;
  gap: 4px;
  padding-left: 12px;
  border-left: 2px solid var(--cyan);
}

.page-about .about-mini__num {
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 3vw, 1.6rem);
  letter-spacing: -.02em;
  color: var(--white);
}

.page-about .about-mini__cap {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--mist);
}

@media (min-width: 900px) {
  .page-about .about-story__grid {
    grid-template-columns: minmax(0, 1fr) 230px;
  }
}

/* 02 时间线 */
.page-about .about-timeline__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-about .about-tl {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: clamp(22px, 3vw, 30px);
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(var(--cyan), var(--cyan-deep) 55%, var(--steel));
}

.page-about .about-tl__item {
  position: relative;
  padding-left: 34px;
}

.page-about .about-tl__dot {
  position: absolute;
  left: 0;
  top: 5px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--console);
  border: 2px solid var(--cyan-deep);
  box-shadow: 0 0 0 4px rgba(53, 230, 218, .08);
  transition: background .2s var(--ease), border-color .2s var(--ease);
}

.page-about .about-tl__item:hover .about-tl__dot {
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-about .about-tl__season {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-about .about-tl__title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.1rem, 2.6vw, 1.35rem);
  line-height: 1.25;
  letter-spacing: -.005em;
}

.page-about .about-tl__text {
  margin: 0;
  max-width: 520px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .about-tl__more {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--cyan);
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity .2s var(--ease), transform .2s var(--ease);
}

.page-about .about-tl__item:hover .about-tl__more,
.page-about .about-tl__item:focus-within .about-tl__more {
  opacity: 1;
  transform: none;
}

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

.page-about .about-timeline__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-card);
  filter: saturate(.7) contrast(1.05);
}

.page-about .about-timeline__figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--mist);
}

@media (hover: none) {
  .page-about .about-tl__more {
    opacity: 1;
    transform: none;
  }
}

@media (min-width: 980px) {
  .page-about .about-timeline__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .78fr);
    align-items: start;
  }

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

/* 03 团队 */
.page-about .about-team__photo {
  margin: 0;
}

.page-about .about-team__photo img {
  display: block;
  width: 100%;
  height: clamp(200px, 40vw, 330px);
  object-fit: cover;
  border-radius: var(--radius-soft);
  filter: saturate(.6) contrast(1.06) brightness(.9);
}

.page-about .about-team__photo figcaption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--mist);
}

.page-about .about-team__grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-about .about-team__card {
  background: var(--console);
  border: 1px solid var(--steel);
  border-radius: var(--radius-card);
  padding: 20px 18px;
}

.page-about .about-team__card h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -.005em;
  color: var(--cyan);
}

.page-about .about-team__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

@media (min-width: 640px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    align-items: start;
  }

  .page-about .about-team__card:nth-child(2),
  .page-about .about-team__card:nth-child(4) {
    transform: translateY(16px);
  }
}

.page-about .about-team__foot {
  display: grid;
  gap: 24px;
  margin-top: clamp(26px, 4vw, 46px);
}

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

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-card);
  background: var(--console);
  filter: saturate(.75);
}

.page-about .about-team__note h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--white);
}

.page-about .about-team__note p {
  margin: 0 0 8px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
}

@media (min-width: 900px) {
  .page-about .about-team__foot {
    grid-template-columns: minmax(0, .85fr) minmax(0, 1fr);
    align-items: center;
  }
}

/* 04 分类 */
.page-about .about-leagues__intro {
  margin: 0 0 clamp(22px, 4vw, 34px);
  max-width: 660px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-leagues__list {
  display: grid;
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-league {
  padding-top: 12px;
  border-top: 2px solid var(--cyan-deep);
}

.page-about .about-league__count {
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 4.5vw, 2.2rem);
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--cyan);
}

.page-about .about-league__name {
  margin: 6px 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: .02em;
}

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

@media (min-width: 620px) {
  .page-about .about-leagues__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1040px) {
  .page-about .about-leagues__list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 18px;
  }
}

/* 05 来源 */
.page-about .about-sources__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-about .about-sources__body p {
  margin: 0 0 16px;
  max-width: 660px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-flow {
  display: grid;
  gap: 10px;
  margin: clamp(20px, 3vw, 28px) 0 0;
  padding: 0;
  list-style: none;
  max-width: 620px;
}

.page-about .about-flow li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 10px 12px;
  background: var(--console);
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--white);
}

.page-about .about-flow__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: -.02em;
  color: var(--cyan);
  flex: none;
}

.page-about .about-sources__aside {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-about .about-partner {
  display: grid;
  gap: 6px;
  padding: 18px;
  background: linear-gradient(160deg, rgba(53, 230, 218, .1), transparent 70%);
  border: 1px solid var(--steel);
  border-radius: var(--radius-card);
}

.page-about .about-partner__num {
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 5vw, 2.4rem);
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--cyan);
}

.page-about .about-partner__cap {
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--mist);
}

@media (min-width: 900px) {
  .page-about .about-sources__grid {
    grid-template-columns: minmax(0, 1fr) 260px;
  }
}

/* 06 手册页 */
.page-about .about-principles {
  background: var(--frost);
  color: var(--about-ink);
}

.page-about .about-principles__grid {
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-about .about-acc {
  border-top: 1px solid var(--about-hairline);
}

.page-about .about-acc__item {
  border-bottom: 1px solid var(--about-hairline);
}

.page-about .about-acc__item summary {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.5;
  color: var(--about-ink);
}

.page-about .about-acc__item summary::-webkit-details-marker {
  display: none;
}

.page-about .about-acc__item summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  color: #0e8c85;
  flex: none;
}

.page-about .about-acc__item[open] summary::after {
  content: "–";
}

.page-about .about-acc__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: -.02em;
  color: #0e8c85;
  flex: none;
}

.page-about .about-acc__item p {
  margin: 0 0 18px;
  padding-right: 24px;
  max-width: 640px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--about-ink-soft);
}

.page-about .about-principles__side {
  padding: 22px 20px;
  background: var(--abyss);
  color: var(--white);
  border-radius: var(--radius-card);
  background-image: radial-gradient(circle at 100% 0, rgba(53, 230, 218, .16), transparent 60%);
}

.page-about .about-principles__side h3 {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.15rem;
  line-height: 1.3;
  color: var(--white);
}

.page-about .about-scene {
  padding-top: 12px;
  margin-bottom: 16px;
  border-top: 1px solid var(--steel);
}

.page-about .about-scene__tag {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-about .about-scene p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-principles__cta {
  margin-top: 4px;
  width: 100%;
  justify-content: center;
}

@media (min-width: 940px) {
  .page-about .about-principles__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .75fr);
    align-items: start;
  }
}

/* 07 规模 */
.page-about .about-scale__grid {
  display: grid;
  gap: 1px;
  background: var(--steel);
  border: 1px solid var(--steel);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.page-about .about-scale__item {
  display: grid;
  gap: 8px;
  padding: 20px 18px;
  background: var(--abyss);
  align-content: start;
}

.page-about .about-scale__num {
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 5vw, 2.8rem);
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--cyan);
}

.page-about .about-scale__cap {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

@media (min-width: 700px) {
  .page-about .about-scale__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* 行动区 */
.page-about .about-cta {
  padding: clamp(40px, 7vw, 80px) 0 clamp(56px, 9vw, 96px);
}

.page-about .about-cta__inner {
  display: grid;
  gap: 22px;
  padding: clamp(24px, 4vw, 40px);
  border-radius: var(--radius-soft);
  background: linear-gradient(140deg, rgba(53, 230, 218, .12), rgba(11, 44, 66, .9) 60%);
  border: 1px solid var(--steel);
}

.page-about .about-cta h2 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.4rem, 4vw, 2.1rem);
  line-height: 1.1;
  letter-spacing: -.01em;
}

.page-about .about-cta p {
  margin: 0;
  max-width: 560px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

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

@media (min-width: 860px) {
  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-tl__more,
  .page-about .about-tl__dot,
  .page-about .about-rail__link,
  .page-about .about-rail__link::before {
    transition: none;
  }
}
<<<END>>>