.page-about {
  --about-rule: rgba(110, 139, 127, .26);
  padding-top: clamp(24px, 4vw, 44px);
  padding-bottom: clamp(48px, 7vw, 96px);
  background: var(--ink);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.page-about .breadcrumb .breadcrumb__item {
  color: var(--sage);
  text-decoration: none;
}

.page-about .breadcrumb a.breadcrumb__item {
  color: var(--cyan);
}

.page-about .breadcrumb a.breadcrumb__item:hover {
  text-decoration: underline;
}

.page-about .breadcrumb .breadcrumb__sep {
  color: rgba(110, 139, 127, .55);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: clamp(22px, 3.4vw, 36px);
  margin-bottom: clamp(44px, 6vw, 80px);
}

.page-about .about-hero__title {
  font-family: var(--font-cn);
  font-weight: 800;
  font-size: clamp(30px, 5.6vw, 54px);
  line-height: 1.14;
  letter-spacing: -.022em;
  color: var(--paper);
  margin: 12px 0 0;
}

.page-about .about-hero__rule {
  display: block;
  width: 64px;
  height: 3px;
  margin: 20px 0 18px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
}

.page-about .about-hero__lede {
  max-width: 36em;
  color: var(--txt-body);
}

.page-about .about-hero__media {
  margin: 0;
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--ink-2);
  box-shadow: var(--shadow-panel);
}

.page-about .about-hero__media img,
.page-about .about-team__media img,
.page-about .about-review__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

@media (min-width: 960px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.02fr);
    align-items: center;
    gap: clamp(32px, 5vw, 64px);
  }
}

/* ---------- 档案分栏 ---------- */
.page-about .archive {
  display: grid;
  gap: clamp(20px, 3.4vw, 36px);
}

@media (min-width: 900px) {
  .page-about .archive {
    grid-template-columns: 188px minmax(0, 1fr);
    gap: clamp(40px, 6vw, 80px);
    align-items: start;
  }
}

/* 左侧编号索引 */
.page-about .archive__rail {
  border-top: 1px solid var(--about-rule);
  padding-top: 16px;
}

.page-about .archive__rail-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--sage);
  margin: 0 0 12px;
}

.page-about .archive__rail-list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-about .archive__rail-link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--txt-dim);
  text-decoration: none;
  white-space: nowrap;
  transition: color .22s ease-out, background-color .22s ease-out, border-color .22s ease-out;
}

.page-about .archive__rail-link span {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--sage);
  transition: color .22s ease-out;
}

.page-about .archive__rail-link:hover {
  color: var(--paper);
}

.page-about .archive__rail-link.is-active {
  color: var(--cyan);
  background: rgba(79, 227, 193, .08);
  border-left-color: var(--cyan);
}

.page-about .archive__rail-link.is-active span {
  color: var(--cyan);
}

@media (min-width: 900px) {
  .page-about .archive__rail {
    position: sticky;
    top: 108px;
    border-top: none;
    padding-top: 0;
  }

  .page-about .archive__rail-list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }
}

/* 正文区 */
.page-about .archive__body {
  min-width: 0;
}

.page-about .archive__section {
  padding-top: clamp(26px, 4vw, 40px);
  padding-bottom: clamp(26px, 4vw, 40px);
  border-top: 1px solid var(--about-rule);
}

.page-about .archive__section:first-child {
  border-top: none;
  padding-top: 0;
}

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

.page-about .archive__title {
  font-family: var(--font-cn);
  font-size: clamp(21px, 2.8vw, 29px);
  font-weight: 800;
  line-height: 1.32;
  letter-spacing: -.012em;
  color: var(--paper);
  margin: 0 0 16px;
}

.page-about .archive__section > p {
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--txt-body);
  margin: 0 0 14px;
  max-width: 40em;
}

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

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

.page-about .archive__section a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 体量指标 ---------- */
.page-about .about-stats {
  margin: 24px 0 0;
  padding: 18px clamp(14px, 2vw, 22px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  background: var(--ink-2);
}

.page-about .about-stats .stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--orange);
}

.page-about .about-stats .stat__label {
  color: var(--txt-dim);
}

/* ---------- 图片 ---------- */
.page-about .about-team__media,
.page-about .about-review__media {
  margin: 24px 0 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--ink-2);
}

.page-about .media-frame__caption {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--sage);
  padding: 10px 12px;
}

/* ---------- 团队分工条 ---------- */
.page-about .team-bars {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .team-bar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px 14px;
  align-items: center;
}

.page-about .team-bar__label {
  grid-area: 1 / 1 / 2 / 2;
  font-size: 14px;
  color: var(--txt-body);
}

.page-about .team-bar__num {
  grid-area: 1 / 2 / 2 / 3;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-about .team-bar__track {
  grid-area: 2 / 1 / 3 / 3;
  display: block;
  height: 6px;
  border-radius: 999px;
  background: rgba(110, 139, 127, .18);
  overflow: hidden;
}

.page-about .team-bar__fill {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--cyan), rgba(79, 227, 193, .32));
}

.page-about .team-bar:nth-child(1) .team-bar__fill { width: 25%; }
.page-about .team-bar:nth-child(2) .team-bar__fill { width: 37.5%; }
.page-about .team-bar:nth-child(3) .team-bar__fill { width: 20.8%; }
.page-about .team-bar:nth-child(4) .team-bar__fill { width: 16.7%; }

/* ---------- 比赛日流程 ---------- */
.page-about .steps {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-about .steps__item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 6px 16px;
  padding: 16px 0;
  border-top: 1px solid var(--about-rule);
}

.page-about .steps__item:first-child {
  border-top: none;
  padding-top: 2px;
}

.page-about .steps__num {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: .06em;
  color: var(--cyan);
  padding-top: 2px;
}

.page-about .steps__title {
  font-family: var(--font-cn);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--paper);
  margin: 0 0 6px;
}

.page-about .steps__item p {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--txt-body);
  margin: 0;
  max-width: 40em;
}

/* ---------- 回访成本 ---------- */
.page-about .about-revisit {
  margin: 24px 0 18px;
}

.page-about .about-revisit__card {
  padding: clamp(18px, 2.4vw, 26px);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform .22s ease-out, box-shadow .22s ease-out;
}

.page-about .about-revisit__card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-panel);
}

.page-about .about-revisit__card h3 {
  font-family: var(--font-cn);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.42;
  color: var(--paper);
  margin: 0;
}

.page-about .about-revisit__card p {
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--txt-body);
  margin: 0;
}

.page-about .about-revisit__link {
  margin-bottom: 0;
}

/* ---------- 结尾卡 ---------- */
.page-about .endcard {
  padding: clamp(20px, 3vw, 30px) clamp(18px, 3vw, 32px);
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius-card);
  background: linear-gradient(135deg, rgba(79, 227, 193, .09), rgba(255, 138, 61, .07));
  display: grid;
  gap: 10px;
}

.page-about .endcard__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--cyan);
  margin: 0;
}

.page-about .endcard__text {
  font-family: var(--font-cn);
  font-size: clamp(16px, 2.2vw, 19px);
  font-weight: 700;
  line-height: 1.6;
  color: var(--paper);
  margin: 0;
  max-width: 32em;
}

.page-about .endcard__meta {
  font-size: 14px;
  line-height: 1.72;
  color: var(--txt-dim);
  margin: 0;
  max-width: 40em;
}

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

.page-about .endcard__meta a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .archive__rail-link,
  .page-about .about-revisit__card {
    transition: none;
  }

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