.page-about {
  --about-radius: 22px;
  --about-hair: 1px solid rgba(8, 46, 38, .16);
  background-color: var(--xo-sand);
  color: var(--xo-text);
  font-family: var(--xo-font-body);
  font-size: 16px;
  line-height: 1.75;
}

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

.page-about a:focus-visible,
.page-about summary:focus-visible {
  outline: 3px solid var(--xo-orange);
  outline-offset: 3px;
}

.page-about .about-shell {
  width: min(1240px, 100%);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 40px);
  padding-bottom: clamp(40px, 7vw, 72px);
}

.page-about .about-crumb {
  padding-top: clamp(14px, 3vw, 24px);
  font-size: 13px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: clamp(22px, 4vw, 36px);
  padding-block: clamp(18px, 4vw, 30px) clamp(26px, 5vw, 46px);
  border-bottom: 3px solid var(--xo-ink);
}

.page-about .about-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--xo-font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--xo-feather);
}

.page-about .about-kicker::before {
  content: "";
  width: 32px;
  height: 3px;
  background: var(--xo-orange);
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--xo-font-display);
  font-size: clamp(34px, 7vw, 70px);
  font-weight: 900;
  line-height: 1.03;
  letter-spacing: -.025em;
  color: var(--xo-ink);
}

.page-about .about-hero__title b {
  color: var(--xo-orange);
  font-weight: 900;
}

.page-about .about-hero__intro {
  max-width: 34em;
  margin: 18px 0 0;
  font-size: clamp(16px, 1.9vw, 18px);
  color: rgba(16, 35, 31, .88);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-about .about-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: var(--xo-pill);
  border: 3px solid var(--xo-ink);
  font-family: var(--xo-font-body);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  transition: transform 160ms var(--xo-ease), box-shadow 160ms var(--xo-ease), background-color 160ms var(--xo-ease), color 160ms var(--xo-ease);
}

.page-about .about-btn--solid {
  background: var(--xo-orange);
  color: var(--xo-ink);
  box-shadow: var(--xo-shadow-sm);
}

.page-about .about-btn--solid:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--xo-shadow);
}

.page-about .about-btn--line {
  background: transparent;
  color: var(--xo-ink);
}

.page-about .about-btn--line:hover {
  background: var(--xo-ink);
  color: var(--xo-sand);
}

.page-about .about-btn--ghost-light {
  background: transparent;
  color: var(--xo-paper);
  border-color: var(--xo-paper);
}

.page-about .about-btn--ghost-light:hover {
  background: var(--xo-paper);
  color: var(--xo-indigo);
}

.page-about .about-hero__figure {
  margin: 0;
  position: relative;
  overflow: hidden;
  border: 3px solid var(--xo-ink);
  border-radius: var(--about-radius);
  box-shadow: var(--xo-shadow);
  background: var(--xo-sea);
}

.page-about .about-hero__figure img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.page-about .about-hero__figure figcaption {
  padding: 9px 14px;
  background: var(--xo-indigo);
  color: var(--xo-sand);
  font-family: var(--xo-font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  line-height: 1.5;
}

/* ---------- 数据带 ---------- */
.page-about .about-stats {
  margin-top: clamp(24px, 4vw, 36px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 12px;
  padding: clamp(18px, 3vw, 28px);
  background: var(--xo-ink);
  border-radius: var(--about-radius);
}

.page-about .about-stats__item {
  padding-left: 12px;
  border-left: 2px solid rgba(199, 255, 61, .38);
}

.page-about .about-stats__num {
  display: block;
  font-family: var(--xo-font-mono);
  font-size: clamp(22px, 3.4vw, 32px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--xo-lime);
}

.page-about .about-stats__label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: rgba(247, 240, 228, .8);
}

/* ---------- 主区骨架 ---------- */
.page-about .about-body {
  display: grid;
  gap: clamp(28px, 5vw, 44px);
  padding-top: clamp(30px, 5vw, 56px);
}

/* ---------- 左栏：赛季时间线 ---------- */
.page-about .about-rail {
  padding: clamp(18px, 2.6vw, 24px);
  background: var(--xo-paper);
  border: 3px solid var(--xo-ink);
  border-radius: var(--about-radius);
}

.page-about .about-rail__eyebrow {
  margin: 0 0 18px;
  font-family: var(--xo-font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--xo-wine);
}

.page-about .about-tl {
  position: relative;
  margin: 0;
  padding: 0 0 0 24px;
  list-style: none;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--xo-orange), var(--xo-feather));
}

.page-about .about-tl__item {
  position: relative;
  padding-bottom: 20px;
}

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

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 5px;
  width: 10px;
  height: 10px;
  border: 3px solid var(--xo-orange);
  border-radius: 50%;
  background: var(--xo-sand);
  box-sizing: content-box;
  transition: background-color 160ms var(--xo-ease), border-color 160ms var(--xo-ease);
}

.page-about .about-tl__item:hover::before,
.page-about .about-tl__item:focus-within::before {
  background: var(--xo-orange);
  border-color: var(--xo-wine);
}

.page-about .about-tl__tag {
  display: block;
  font-family: var(--xo-font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--xo-feather);
}

.page-about .about-tl__name {
  display: block;
  margin-top: 2px;
  font-size: 15.5px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--xo-ink);
}

.page-about .about-tl__desc {
  margin: 6px 0 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: rgba(16, 35, 31, .74);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 160ms var(--xo-ease);
}

.page-about .about-tl__item:hover .about-tl__desc,
.page-about .about-tl__item:focus-within .about-tl__desc {
  display: block;
  -webkit-line-clamp: unset;
  color: var(--xo-ink);
}

.page-about .about-rail__foot {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: var(--about-hair);
  font-family: var(--xo-font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  color: rgba(16, 35, 31, .7);
}

/* ---------- 右侧章节 ---------- */
.page-about .about-chapters {
  display: grid;
  gap: clamp(36px, 6vw, 62px);
}

.page-about .about-chapter__head {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding-bottom: 12px;
  margin-bottom: 20px;
  border-bottom: 3px solid var(--xo-ink);
}

.page-about .about-chapter__no {
  flex: 0 0 auto;
  margin-top: 3px;
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--xo-orange);
  color: var(--xo-ink);
  font-family: var(--xo-font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
}

.page-about .about-chapter__head h2 {
  margin: 0;
  font-family: var(--xo-font-display);
  font-size: clamp(23px, 3.6vw, 34px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--xo-ink);
}

.page-about .about-prose {
  max-width: 66ch;
}

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

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

.page-about .about-prose a {
  color: var(--xo-feather);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-about .about-prose a:hover {
  color: var(--xo-orange);
}

/* ---------- 边注块 ---------- */
.page-about .about-note {
  margin: 22px 0 0;
  padding: 16px 20px;
  border-radius: 18px;
  border-left: 6px solid var(--xo-feather);
  background: rgba(14, 140, 127, .1);
  font-size: 15px;
  line-height: 1.7;
}

.page-about .about-note p {
  margin: 0;
}

.page-about .about-note__label {
  margin-bottom: 8px !important;
  font-family: var(--xo-font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--xo-feather);
}

.page-about .about-note--wine {
  border-left-color: var(--xo-wine);
  background: var(--xo-wine);
  color: var(--xo-sand);
}

.page-about .about-note--wine .about-note__label {
  color: var(--xo-lime);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: 20px;
}

.page-about .about-team__figure {
  margin: 0;
  overflow: hidden;
  border: 3px solid var(--xo-ink);
  border-radius: 18px;
  box-shadow: var(--xo-shadow-sm);
  background: var(--xo-mist);
}

.page-about .about-team__figure img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-roles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 22px;
}

.page-about .about-role {
  padding: 14px 16px;
  border: 3px solid var(--xo-ink);
  border-radius: 16px;
  background: var(--xo-paper);
  transition: transform 160ms var(--xo-ease), box-shadow 160ms var(--xo-ease), background-color 160ms var(--xo-ease);
}

.page-about .about-role:hover,
.page-about .about-role:focus-within {
  transform: translate(-2px, -2px);
  box-shadow: var(--xo-shadow-sm);
  background: var(--xo-apricot);
}

.page-about .about-role:nth-child(2):hover,
.page-about .about-role:nth-child(2):focus-within {
  background: var(--xo-mist);
}

.page-about .about-role:nth-child(3):hover,
.page-about .about-role:nth-child(3):focus-within {
  background: #DCF0EA;
}

.page-about .about-role__name {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  font-size: 16px;
  font-weight: 800;
  color: var(--xo-ink);
}

.page-about .about-role__dot {
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--xo-orange);
}

.page-about .about-role__dot--sea {
  background: var(--xo-sea);
}

.page-about .about-role__dot--feather {
  background: var(--xo-feather);
}

.page-about .about-role__desc {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.65;
  color: rgba(16, 35, 31, .8);
}

/* ---------- 三级校验 ---------- */
.page-about .about-steps {
  display: grid;
  gap: 18px;
}

.page-about .about-step {
  padding-top: 14px;
  border-top: 4px solid var(--xo-feather);
}

.page-about .about-step:nth-child(2) {
  border-top-color: var(--xo-sea);
}

.page-about .about-step:nth-child(3) {
  border-top-color: var(--xo-wine);
}

.page-about .about-step__no {
  display: block;
  font-family: var(--xo-font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--xo-ink);
}

.page-about .about-step__name {
  margin: 8px 0 0;
  font-size: 17px;
  font-weight: 800;
  color: var(--xo-ink);
}

.page-about .about-step__desc {
  margin: 6px 0 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(16, 35, 31, .8);
}

/* ---------- 社区合作 ---------- */
.page-about .about-community {
  display: grid;
  gap: 20px;
}

.page-about .about-community__figure {
  margin: 0;
  overflow: hidden;
  border: 3px solid var(--xo-ink);
  border-radius: 18px;
  background: var(--xo-mist);
}

.page-about .about-community__figure img {
  width: 100%;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-about .about-community__figure figcaption {
  padding: 9px 14px;
  background: var(--xo-ink);
  color: var(--xo-sand);
  font-family: var(--xo-font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
}

/* ---------- 荣誉与资质 ---------- */
.page-about .about-honors {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.page-about .about-honor {
  overflow: hidden;
  border: 3px solid var(--xo-ink);
  border-radius: 16px;
  background: var(--xo-paper);
}

.page-about .about-honor summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 800;
  color: var(--xo-ink);
  transition: background-color 160ms var(--xo-ease);
}

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

.page-about .about-honor summary:hover {
  background: var(--xo-apricot);
}

.page-about .about-honor__title {
  flex: 1 1 auto;
}

.page-about .about-honor__mark {
  flex: 0 0 auto;
  font-family: var(--xo-font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--xo-feather);
  transition: transform 200ms var(--xo-ease);
}

.page-about .about-honor[open] .about-honor__mark {
  transform: rotate(45deg);
}

.page-about .about-honor[open] summary {
  background: var(--xo-apricot);
}

.page-about .about-honor__body {
  padding: 14px 18px 18px;
  border-top: 1px dashed rgba(8, 46, 38, .3);
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(16, 35, 31, .82);
}

.page-about .about-honor__body p {
  margin: 0;
}

.page-about .about-honor__body a {
  color: var(--xo-feather);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-about .about-honor__body a:hover {
  color: var(--xo-orange);
}

/* ---------- 收束 ---------- */
.page-about .about-cta {
  padding: clamp(24px, 4vw, 40px);
  border: 3px solid var(--xo-ink);
  border-radius: var(--about-radius);
  background: var(--xo-indigo);
  color: var(--xo-sand);
  box-shadow: var(--xo-shadow-sm);
}

.page-about .about-cta__title {
  margin: 0 0 12px;
  font-family: var(--xo-font-display);
  font-size: clamp(23px, 3.6vw, 34px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--xo-paper);
}

.page-about .about-cta p {
  max-width: 52ch;
  margin: 0 0 22px;
  color: rgba(247, 240, 228, .88);
}

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

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-about .about-roles {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    align-items: start;
    gap: 26px;
  }

  .page-about .about-community {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: 26px;
  }
}

@media (min-width: 820px) {
  .page-about .about-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: end;
  }

  .page-about .about-body {
    grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
    align-items: start;
    gap: clamp(32px, 4vw, 56px);
  }

  .page-about .about-rail {
    position: sticky;
    top: 100px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-btn,
  .page-about .about-role,
  .page-about .about-tl__item::before,
  .page-about .about-honor__mark,
  .page-about .about-tl__desc {
    transition: none;
  }

  .page-about .about-btn--solid:hover,
  .page-about .about-role:hover {
    transform: none;
  }
}
<<<END>>>