.page-about {
  background: var(--pitch-900);
  color: var(--white);
  overflow-x: hidden;
}

.page-about [id] {
  scroll-margin-top: calc(var(--header-h) + 24px);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumb {
  padding-top: 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--silver);
}

.page-about .about-crumb a {
  color: var(--silver);
  text-decoration: none;
  transition: color 160ms var(--ease);
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 48px 0 0;
  overflow: hidden;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding-bottom: 72px;
}

.page-about .about-hero__copy {
  max-width: 40em;
}

.page-about .about-hero__copy .eyebrow {
  color: var(--cyan);
  margin: 0 0 16px;
}

.page-about .about-hero h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 34px;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
}

.page-about .about-hero .lede {
  font-size: 17px;
  line-height: 1.8;
  color: var(--white);
  margin: 0 0 16px;
}

.page-about .about-hero__note {
  font-size: 16px;
  line-height: 1.8;
  color: var(--silver);
  margin: 0 0 28px;
}

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

.page-about .about-hero__media {
  border: 1px solid var(--grid-line);
}

.page-about .about-hero__media .media__caption {
  color: var(--silver-dark);
  font-size: 12px;
  padding-top: 10px;
}

.page-about .about-hero__slash {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 52px;
  margin: 0 -8%;
  padding: 0 10%;
  transform: rotate(-2.4deg);
  transform-origin: center;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--cyan-dim) 52%, var(--orange) 100%);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--pitch-900);
  white-space: nowrap;
}

/* ---------- 主体两栏 ---------- */
.page-about .about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding: 56px 0 88px;
}

/* ---------- 左侧章节索引 ---------- */
.page-about .about-rail__label {
  color: var(--silver-dark);
  margin: 0 0 16px;
}

.page-about .about-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-about .about-rail__list li {
  flex: 0 0 auto;
}

.page-about .about-rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border-bottom: 2px solid transparent;
  color: var(--silver);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 160ms var(--ease), border-color 160ms var(--ease), background 160ms var(--ease);
}

.page-about .about-rail__num {
  font-size: 12px;
  color: var(--silver-dark);
  transition: color 160ms var(--ease);
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  background: rgba(47, 230, 200, 0.06);
}

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

/* ---------- 章节 ---------- */
.page-about .about-section {
  padding-bottom: 56px;
  margin-bottom: 56px;
  border-bottom: 1px solid var(--grid-line);
}

.page-about .about-section:last-child {
  border-bottom: 0;
  margin-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-section__head {
  margin-bottom: 28px;
}

.page-about .about-section__kicker {
  color: var(--cyan);
  margin: 0 0 12px;
}

.page-about .about-section__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 26px;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin: 0 0 14px;
  max-width: 24ch;
}

.page-about .about-section__intro {
  font-size: 16px;
  line-height: 1.8;
  color: var(--silver);
  margin: 0;
  max-width: 40em;
}

/* ---------- 正文 ---------- */
.page-about .prose {
  max-width: 42em;
}

.page-about .prose p {
  margin: 0 0 1.2em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--white);
}

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

.page-about .prose a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-dim);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

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

.page-about .about-inline-link {
  margin: 28px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

.page-about .about-inline-link a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-dim);
}

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

/* ---------- 编年时间轴 ---------- */
.page-about .chronicle {
  list-style: none;
  margin: 36px 0 0;
  padding: 0 0 0 5px;
  border-left: 1px solid var(--grid-line);
}

.page-about .chronicle__item {
  position: relative;
  padding: 0 0 34px 26px;
}

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

.page-about .chronicle__item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 7px;
  width: 8px;
  height: 8px;
  background: var(--pitch-900);
  border: 1px solid var(--cyan);
}

.page-about .chronicle__item:last-child::before {
  background: var(--orange);
  border-color: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 122, 46, 0.16);
}

.page-about .chronicle__item--figure::before {
  display: none;
}

.page-about .chronicle__item--figure {
  padding-bottom: 34px;
}

.page-about .chronicle__item--figure .media {
  border: 1px solid var(--grid-line);
}

.page-about .chronicle__item--figure .media__caption {
  color: var(--silver-dark);
  font-size: 12px;
  padding-top: 10px;
}

.page-about .chronicle__mark {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 8px;
}

.page-about .chronicle__year {
  font-size: 15px;
  color: var(--cyan);
  letter-spacing: 0.04em;
}

.page-about .chronicle__stage {
  color: var(--silver-dark);
}

.page-about .chronicle__title {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--white);
  margin: 0 0 8px;
}

.page-about .chronicle__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
  max-width: 40em;
}

/* ---------- 团队 ---------- */
.page-about .crew-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--grid-line);
  border: 1px solid var(--grid-line);
}

.page-about .crew-card {
  background: var(--pitch-800);
  padding: 24px 22px 26px;
  transition: background 160ms var(--ease);
}

.page-about .crew-card:hover {
  background: var(--pitch-700);
}

.page-about .crew-card__tag {
  color: var(--silver-dark);
  margin: 0 0 12px;
}

.page-about .crew-card__name {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  margin: 0 0 10px;
  color: var(--white);
}

.page-about .crew-card__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

.page-about .crew-day {
  margin-top: 40px;
  border-left: 2px solid var(--orange);
  padding-left: 20px;
}

.page-about .crew-day__label {
  color: var(--orange);
  margin: 0 0 16px;
}

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

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

.page-about .crew-day__item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .crew-day__time {
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: 0.02em;
}

.page-about .crew-day__text {
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver);
}

.page-about .crew-media {
  margin: 40px 0 0;
  border: 1px solid var(--grid-line);
}

.page-about .crew-media .media__caption {
  color: var(--silver-dark);
  font-size: 12px;
  padding-top: 10px;
}

/* ---------- 流程 ---------- */
.page-about .flow {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: flow;
}

.page-about .flow__step {
  position: relative;
  padding: 22px 22px 22px 24px;
  border: 1px solid var(--grid-line);
  border-left: 3px solid var(--grid-line);
  background: var(--pitch-800);
  margin-bottom: 12px;
  transition: border-color 200ms var(--ease), background 200ms var(--ease);
}

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

.page-about .flow__step:hover,
.page-about .flow__step:focus-within {
  border-color: var(--cyan-dim);
  border-left-color: var(--cyan);
  background: var(--pitch-700);
}

.page-about .flow__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 10px;
}

.page-about .flow__index {
  font-size: 14px;
  color: var(--orange);
}

.page-about .flow__name {
  font-family: var(--font-head);
  font-size: 19px;
  font-weight: 700;
  margin: 0;
  color: var(--white);
}

.page-about .flow__summary {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--white);
  max-width: 40em;
}

.page-about .flow__detail {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
  max-width: 40em;
}

/* ---------- 球迷组织 ---------- */
.page-about .org-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-about .org-item {
  padding: 24px 22px;
  border: 1px solid var(--grid-line);
  border-top: 2px solid var(--cyan);
  background: linear-gradient(180deg, rgba(47, 230, 200, 0.05) 0%, rgba(5, 13, 10, 0) 60%);
  transition: border-color 160ms var(--ease), transform 200ms var(--ease);
}

.page-about .org-item:hover {
  border-color: var(--cyan-dim);
  transform: translateY(-2px);
}

.page-about .org-item__no {
  font-size: 13px;
  color: var(--cyan);
  letter-spacing: 0.14em;
  margin: 0 0 12px;
}

.page-about .org-item__title {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  margin: 0 0 10px;
  color: var(--white);
}

.page-about .org-item__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

/* ---------- 合作与认可 ---------- */
.page-about .recog {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--grid-line);
  border: 1px solid var(--grid-line);
  margin: 36px 0 0;
}

.page-about .recog__card {
  background: var(--pitch-800);
  padding: 22px 18px 20px;
}

.page-about .recog__num {
  font-size: 40px;
  line-height: 1;
  color: var(--cyan);
  margin: 0 0 10px;
}

.page-about .recog__label {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--silver);
}

.page-about .about-close {
  margin-top: 32px;
}

/* ---------- 平板 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero h1 {
    font-size: 44px;
  }

  .page-about .about-section__title {
    font-size: 32px;
  }

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

  .page-about .crew-day__item {
    grid-template-columns: 150px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }

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

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

/* ---------- 桌面 ---------- */
@media (min-width: 1024px) {
  .page-about .about-hero {
    padding-top: 64px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 11fr) minmax(0, 8fr);
    gap: 56px;
    align-items: start;
    padding-bottom: 88px;
  }

  .page-about .about-hero h1 {
    font-size: 54px;
  }

  .page-about .about-layout {
    grid-template-columns: 226px minmax(0, 1fr);
    gap: 72px;
    padding-top: 72px;
  }

  .page-about .about-rail {
    position: sticky;
    top: calc(var(--header-h) + 32px);
    align-self: start;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
    border-left: 1px solid var(--grid-line);
  }

  .page-about .about-rail__list li {
    flex: initial;
  }

  .page-about .about-rail__link {
    padding: 11px 14px;
    margin-left: -1px;
    border-bottom: 0;
    border-left: 2px solid transparent;
    white-space: normal;
  }

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

  .page-about .about-section {
    padding-bottom: 64px;
    margin-bottom: 64px;
  }

  .page-about .about-section__title {
    font-size: 40px;
  }

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

  .page-about .flow__detail {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    margin-top: 0;
    transition: max-height 280ms var(--ease), opacity 200ms var(--ease), margin-top 280ms var(--ease);
  }

  .page-about .flow__step:hover .flow__detail,
  .page-about .flow__step:focus-within .flow__detail {
    max-height: 220px;
    opacity: 1;
    margin-top: 10px;
  }

  .page-about .recog__num {
    font-size: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .flow__detail,
  .page-about .org-item,
  .page-about .crew-card,
  .page-about .about-rail__link {
    transition: none;
  }

  .page-about .org-item:hover {
    transform: none;
  }
}
<<<END>>>