.page-about {
  --about-rail-w: 264px;
  display: block;
}

.page-about .breadcrumb {
  padding: 22px 0 0;
}

.page-about .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.page-about .breadcrumb__list a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

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

.page-about .breadcrumb__list a[aria-current="page"] {
  color: var(--white);
  border-bottom-color: var(--steel);
}

.page-about .breadcrumb__sep {
  color: var(--steel);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  padding: 30px 0 0;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: center;
}

.page-about .about-hero__copy {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(30px, 6.4vw, 52px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--white);
  overflow-wrap: break-word;
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 54ch;
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--mist);
}

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

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

.page-about .about-hero__media {
  border: var(--line);
  box-shadow: var(--shadow-hard);
  background: var(--ink-panel);
  overflow: hidden;
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 16 / 9;
}

.page-about .about-hero__figure .figure__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 概览数字条 ---------- */

.page-about .about-stats {
  padding: 34px 0 0;
}

.page-about .about-stats__list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: 0;
  padding: 0;
  list-style: none;
  border: var(--line);
  background: var(--ink-panel);
  box-shadow: var(--shadow-soft);
}

.page-about .about-stats__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 16px;
  border-right: 2px solid var(--steel);
  border-bottom: 2px solid var(--steel);
}

.page-about .about-stats__item:nth-child(2n) {
  border-right: none;
}

.page-about .about-stats__item:nth-child(n + 3) {
  border-bottom: none;
}

.page-about .about-stats__num {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-about .about-stats__item:nth-child(2n) .about-stats__num {
  color: var(--orange);
}

.page-about .about-stats__label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--mist);
}

/* ---------- 主布局 ---------- */

.page-about .about-main {
  padding: 54px 0 0;
}

.page-about .about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.page-about .about-rail__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-about .about-body {
  min-width: 0;
}

/* ---------- 章节通用 ---------- */

.page-about .about-section {
  scroll-margin-top: 112px;
}

.page-about .about-section + .about-section {
  margin-top: 58px;
  padding-top: 58px;
  border-top: 2px solid var(--steel);
}

.page-about .section-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 6px 14px;
  margin: 0 0 22px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--steel);
}

.page-about .section-head__no {
  grid-row: 1;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-about .section-head__title {
  grid-row: 1;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--white);
  overflow-wrap: break-word;
}

.page-about .section-head__meta {
  grid-column: 2;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-about .prose {
  max-width: 66ch;
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .prose p {
  margin: 0 0 14px;
}

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

/* ---------- 字段列表 ---------- */

.page-about .field-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  border: var(--line);
  background: var(--steel);
  box-shadow: var(--shadow-soft);
}

.page-about .field-list__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 15px;
  background: var(--ink-panel);
}

.page-about .field-list__no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--cyan-deep);
}

.page-about .field-list__name {
  font-family: var(--font-display);
  font-size: 19px;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-about .field-list__hint {
  font-size: 13px;
  line-height: 1.55;
  color: var(--mist);
}

/* ---------- 团队 ---------- */

.page-about .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 22px;
}

.page-about .team-card {
  position: relative;
  padding: 20px 18px 20px 24px;
  background: var(--ink-panel);
  border: var(--line);
  box-shadow: var(--shadow-soft);
  transition: box-shadow 180ms ease, border-color 180ms ease;
}

.page-about .team-card::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 4px;
  background: var(--cyan);
}

.page-about .team-card--tech::before {
  background: var(--orange);
}

.page-about .team-card:hover,
.page-about .team-card:focus-within {
  border-color: var(--cyan-deep);
  box-shadow: var(--shadow-hard);
}

.page-about .team-card--tech:hover,
.page-about .team-card--tech:focus-within {
  border-color: var(--orange-deep);
}

.page-about .team-card__count {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-about .team-card--tech .team-card__count {
  color: var(--orange);
}

.page-about .team-card__name {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 22px;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-about .team-card__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 数据来源 ---------- */

.page-about .source-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 22px;
}

.page-about .source-node {
  padding: 20px 18px;
  background: var(--ink-panel);
  border: var(--line);
  box-shadow: var(--shadow-soft);
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.page-about .source-node:hover {
  border-color: var(--cyan-deep);
  box-shadow: var(--shadow-hard);
}

.page-about .source-node__no {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-about .source-node__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 21px;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-about .source-node__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 流程步骤 ---------- */

.page-about .flow-list {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .flow-step {
  position: relative;
  padding: 0 0 26px 60px;
}

.page-about .flow-step::after {
  content: "";
  position: absolute;
  top: 26px;
  bottom: 0;
  left: 21px;
  width: 2px;
  background: var(--steel);
}

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

.page-about .flow-step:last-child::after {
  display: none;
}

.page-about .flow-step__no {
  position: absolute;
  top: 0;
  left: 0;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  background: var(--ink-raised);
  border: 2px solid var(--cyan-deep);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-about .flow-step:nth-child(even) .flow-step__no {
  border-color: var(--orange-deep);
  color: var(--orange);
}

.page-about .flow-step__title {
  margin: 6px 0 6px;
  font-family: var(--font-display);
  font-size: 21px;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-about .flow-step__text {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.74;
  color: var(--mist);
}

.page-about .flow-figure {
  margin: 30px 0 0;
}

.page-about .flow-figure .figure__media {
  border: var(--line);
  box-shadow: var(--shadow-soft);
  background: var(--ink-panel);
  overflow: hidden;
}

.page-about .flow-figure .figure__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .flow-figure .figure__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 赛季档案 ---------- */

.page-about .archive-meter {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 4px;
  margin: 22px 0 24px;
}

.page-about .archive-meter span {
  height: 24px;
  background: var(--ink-panel);
  border: 1px solid var(--steel);
}

.page-about .archive-meter span:first-child {
  background: var(--cyan-deep);
  border-color: var(--cyan);
}

.page-about .archive-groups {
  display: grid;
  gap: 12px;
}

.page-about .archive-group__btn {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  width: 100%;
  padding: 15px 17px;
  background: var(--ink-panel);
  border: var(--line);
  color: var(--white);
  text-align: left;
  cursor: pointer;
  transition: background-color 180ms ease, border-color 180ms ease;
}

.page-about .archive-group__btn:hover,
.page-about .archive-group__btn:focus-visible {
  background: var(--ink-raised);
  border-color: var(--cyan-deep);
}

.page-about .archive-group__years {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--cyan);
}

.page-about .archive-group__name {
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: -0.01em;
}

.page-about .archive-group__caret {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--mist);
}

.page-about .archive-group__btn[aria-expanded="true"] .archive-group__caret {
  color: var(--pulse);
}

.page-about .archive-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 14px 18px 18px;
  list-style: none;
  border: var(--line);
  border-top: none;
  background: var(--ink-deep);
}

.page-about .archive-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--mist);
}

.page-about .archive-list li::before {
  content: "";
  position: absolute;
  top: 0.68em;
  left: 0;
  width: 8px;
  height: 2px;
  background: var(--cyan-deep);
}

/* ---------- 合作与本地化 ---------- */

.page-about .partner-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  margin: 24px 0 0;
  border: var(--line);
  background: var(--steel);
  box-shadow: var(--shadow-soft);
}

.page-about .partner-stat {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 18px;
  background: var(--ink-panel);
}

.page-about .partner-stat__num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--pulse);
}

.page-about .partner-stat__label {
  font-size: 14px;
  color: var(--mist);
}

.page-about .partner-figure {
  margin: 26px 0 0;
}

.page-about .partner-figure .figure__media {
  border: var(--line);
  box-shadow: var(--shadow-soft);
  background: var(--ink-panel);
  overflow: hidden;
}

.page-about .partner-figure .figure__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .partner-figure .figure__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

.page-about .partner-action {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
  margin-top: 24px;
  padding: 20px 18px;
  background: var(--ink-deep);
  border: var(--line);
  border-left: 4px solid var(--orange);
}

.page-about .partner-action__text {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.74;
  color: var(--mist);
}

.page-about .partner-action__text .num {
  font-family: var(--font-mono);
  color: var(--white);
  word-break: break-all;
}

/* ---------- 底部导流 ---------- */

.page-about .about-next {
  padding: 58px 0 76px;
}

.page-about .about-next__inner {
  display: grid;
  gap: 18px;
  padding: 26px 22px;
  background: var(--ink-panel);
  border: var(--line);
  box-shadow: var(--shadow-hard);
}

.page-about .about-next__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 28px;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-about .about-next__text {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist);
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-about .field-list {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .partner-stats {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 760px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    gap: 36px;
  }

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

  .page-about .about-stats__item {
    border-bottom: none;
  }

  .page-about .about-stats__item:nth-child(2n) {
    border-right: 2px solid var(--steel);
  }

  .page-about .about-stats__item:last-child {
    border-right: none;
  }

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

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

  .page-about .partner-action {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
  }
}

@media (min-width: 980px) {
  .page-about .about-main {
    padding-top: 66px;
  }

  .page-about .about-layout {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: 48px;
  }

  .page-about .about-rail {
    position: sticky;
    top: 104px;
    align-self: start;
    max-height: calc(100vh - 132px);
    overflow: auto;
  }

  .page-about .about-section + .about-section {
    margin-top: 66px;
    padding-top: 66px;
  }

  .page-about .about-next__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 30px;
    padding: 30px 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-card,
  .page-about .source-node,
  .page-about .archive-group__btn {
    transition: none;
  }
}
<<<END>>>