.page-about {
  --about-border: rgba(233, 243, 234, 0.14);
  --about-border-faint: rgba(233, 243, 234, 0.07);
  --about-green-glow: rgba(53, 224, 107, 0.35);
  background: var(--ink);
  color: var(--line);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: hidden;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-display);
  color: var(--paper);
  text-wrap: balance;
}

.page-about a {
  color: var(--green);
  text-decoration-color: var(--about-green-glow);
  text-underline-offset: 3px;
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: var(--space-5) 0 var(--space-4);
  border-bottom: 1px solid var(--about-border-faint);
  isolation: isolate;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: linear-gradient(to right, var(--line-faint) 1px, transparent 1px);
  background-size: 25% 100%;
  opacity: 0.6;
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  width: 64px;
  height: 2px;
  background: var(--gold);
  pointer-events: none;
}

.page-about .about-hero__grid {
  display: grid;
  gap: var(--space-4);
  align-items: start;
}

.page-about .about-hero__copy > .breadcrumbs {
  margin-bottom: var(--space-3);
}

.page-about .about-hero h1 {
  font-size: clamp(34px, 6.4vw, 66px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.025em;
  margin: var(--space-2) 0 var(--space-3);
}

.page-about .about-hero__lede {
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--line);
  max-width: 48ch;
  margin: 0 0 var(--space-3);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-4);
  margin: var(--space-4) 0 0;
  padding-top: var(--space-3);
  border-top: 1px dashed var(--about-border);
}

.page-about .about-hero__facts > div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-about .about-hero__facts dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-about .about-hero__facts dd {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 4vw, 30px);
  font-weight: 900;
  line-height: 1.1;
  color: var(--green);
  letter-spacing: -0.01em;
}

.page-about .about-hero__media {
  margin: 0;
  padding: 10px;
  background: var(--ink-2);
  border: 1px solid var(--about-border);
  box-shadow: 8px 8px 0 var(--shadow);
}

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

.page-about .media-caption {
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--muted);
  margin: 10px 0 0;
}

/* ---------- 章节通用 ---------- */
.page-about .about-section {
  position: relative;
  padding: var(--space-5) 0;
}

.page-about .about-section + .about-section {
  border-top: 1px dashed var(--about-border-faint);
}

.page-about .about-section__head {
  display: flex;
  gap: var(--space-2);
  align-items: flex-start;
  margin-bottom: var(--space-4);
}

.page-about .about-section__head--stack {
  display: block;
  margin-bottom: var(--space-3);
}

.page-about .about-section__num {
  flex: 0 0 auto;
  font-family: var(--font-display);
  font-size: 46px;
  font-weight: 900;
  line-height: 0.82;
  letter-spacing: -0.04em;
  color: var(--green);
  opacity: 0.9;
}

.page-about .about-section__head--stack .about-section__num {
  display: block;
  margin-bottom: var(--space-2);
}

.page-about .about-section h2 {
  font-size: clamp(25px, 4.2vw, 40px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-2);
}

.page-about .about-section__intro {
  margin: 0;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .eyebrow {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--gold);
  margin: 0 0 var(--space-1);
}

/* ---------- 版本时间线 ---------- */
.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 40px;
  position: relative;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 14px;
  bottom: 14px;
  width: 1px;
  background: linear-gradient(to bottom, var(--green), var(--gold), var(--line-faint));
}

.page-about .timeline__item {
  position: relative;
  padding-bottom: var(--space-3);
}

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

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -35px;
  top: 18px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--green);
  box-shadow: 0 0 0 3px var(--ink);
}

.page-about .timeline__node {
  background: var(--ink-2);
  border: 1px solid var(--about-border-faint);
  border-left: 2px solid var(--green);
  border-radius: var(--radius-sm);
  transition: border-color 160ms ease, transform 160ms ease;
}

.page-about .timeline__node:hover {
  border-color: var(--about-green-glow);
  transform: translateX(2px);
}

.page-about .timeline__summary {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  padding: 14px var(--space-3);
  cursor: pointer;
  list-style: none;
}

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

.page-about .timeline__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  color: var(--green);
  background: var(--green-soft);
  border: 1px solid var(--about-green-glow);
  border-radius: var(--radius-sm);
  padding: 2px 8px;
  letter-spacing: 0.06em;
}

.page-about .timeline__title {
  flex: 1 1 auto;
  min-width: 8em;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.2;
  color: var(--paper);
  letter-spacing: -0.01em;
}

.page-about .timeline__node[open] .timeline__title {
  color: var(--green);
}

.page-about .timeline__body {
  padding: var(--space-2) var(--space-3) var(--space-3);
  border-top: 1px dashed var(--about-border-faint);
  margin-top: 2px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

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

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: var(--space-4);
  align-items: start;
}

.page-about .role-list {
  list-style: none;
  margin: var(--space-3) 0 var(--space-3);
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-about .role {
  position: relative;
  padding: var(--space-3) var(--space-2) var(--space-2);
  background: var(--paper);
  color: var(--ink);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(7, 26, 18, 0.1);
  box-shadow: 5px 5px 0 var(--shadow);
}

.page-about .role__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 600;
  line-height: 1;
  color: var(--ink);
  margin-bottom: 10px;
}

.page-about .role h3 {
  font-size: 17px;
  font-weight: 900;
  line-height: 1.2;
  margin: 0 0 6px;
  color: var(--ink);
}

.page-about .role p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(7, 26, 18, 0.76);
}

.page-about .about-team__note {
  margin: 0;
  padding-left: var(--space-2);
  border-left: 3px solid var(--gold);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--line);
  max-width: 46ch;
}

.page-about .about-team__aside {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.page-about .about-team__figure {
  margin: 0;
  padding: 8px;
  background: var(--ink-2);
  border: 1px solid var(--about-border);
}

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

.page-about .note-drawer {
  background: var(--ink-2);
  border: 1px dashed var(--about-border);
  border-radius: var(--radius-sm);
}

.page-about .note-drawer summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px var(--space-2);
  list-style: none;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--gold);
}

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

.page-about .note-drawer summary::before {
  content: "+";
  flex: 0 0 auto;
  font-size: 15px;
  color: var(--green);
}

.page-about .note-drawer[open] summary::before {
  content: "\2212";
}

.page-about .note-drawer p {
  margin: 0;
  padding: 0 var(--space-2) var(--space-3);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 流程 ---------- */
.page-about .flow {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
}

.page-about .flow__step {
  position: relative;
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: var(--space-2);
  padding: var(--space-3) 0;
  border-top: 1px dashed var(--about-border-faint);
}

.page-about .flow__step:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .flow__step:not(:last-child)::after {
  content: "";
  position: absolute;
  left: 27px;
  top: 52px;
  bottom: 2px;
  border-left: 1px dashed var(--about-border);
}

.page-about .flow__num {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  margin-top: 2px;
  border-radius: 50%;
  background: var(--green);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0;
}

.page-about .flow__text h3 {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.25;
  margin: 0 0 6px;
  color: var(--paper);
}

.page-about .flow__text p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 54ch;
}

.page-about .flow__note {
  margin-top: var(--space-3);
  padding: var(--space-3);
  border-left: 3px solid var(--gold);
  background: var(--ink-2);
}

.page-about .flow__note-label {
  margin: 0 0 6px;
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-about .flow__note p:last-child {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--line);
}

/* ---------- 合作生态 ---------- */
.page-about .about-eco__grid {
  display: grid;
  gap: var(--space-3);
  align-items: start;
}

.page-about .about-eco__media {
  margin: 0;
  padding: 8px;
  background: var(--ink-2);
  border: 1px solid var(--about-border);
  box-shadow: 8px 8px 0 var(--shadow);
}

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

.page-about .about-eco__copy > p {
  margin: 0 0 var(--space-3);
  font-size: 15px;
  line-height: 1.8;
  color: var(--line);
  max-width: 58ch;
}

.page-about .eco-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-about .eco-list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-2);
  align-items: baseline;
  padding-bottom: var(--space-2);
  border-bottom: 1px dashed var(--about-border-faint);
}

.page-about .eco-list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .eco-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 赛场观 ---------- */
.page-about .values-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--space-2);
}

.page-about .value {
  position: relative;
  padding: var(--space-3) var(--space-2) var(--space-3) var(--space-3);
  background: linear-gradient(135deg, var(--ink-2) 0%, rgba(12, 36, 24, 0.4) 100%);
  border-left: 2px solid var(--green);
  border-radius: var(--radius-sm);
}

.page-about .value__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--green);
  margin-bottom: 8px;
}

.page-about .value h3 {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.25;
  margin: 0 0 8px;
  color: var(--paper);
}

.page-about .value p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-values__cta {
  margin-top: var(--space-4);
  padding: var(--space-4) var(--space-3);
  display: grid;
  gap: var(--space-3);
  align-items: center;
  border-radius: var(--radius-sm);
  color: var(--ink);
  box-shadow: 8px 8px 0 var(--shadow);
}

.page-about .about-values__cta h3 {
  font-size: clamp(21px, 3.4vw, 28px);
  font-weight: 900;
  line-height: 1.2;
  margin: 0 0 8px;
  color: var(--ink);
}

.page-about .about-values__cta p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(7, 26, 18, 0.78);
  max-width: 46ch;
}

.page-about .about-values__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.page-about .about-values__actions .btn--ghost {
  color: var(--ink);
  border-color: rgba(7, 26, 18, 0.35);
}

.page-about .about-values__actions .btn--ghost:hover {
  background: var(--ink);
  color: var(--paper);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero {
    padding: var(--space-6) 0 var(--space-5);
  }

  .page-about .about-section {
    padding: var(--space-6) 0;
  }

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

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

  .page-about .about-values__cta {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-5);
  }

  .page-about .about-hero__media {
    margin-top: var(--space-2);
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: var(--space-5);
  }

  .page-about .about-eco__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
    gap: var(--space-4);
  }

  .page-about .about-section__head {
    gap: var(--space-3);
  }

  .page-about .about-section__num {
    font-size: 60px;
  }

  .page-about .about-team__aside {
    position: sticky;
    top: 96px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-hero__lede {
    font-size: 17.5px;
  }

  .page-about .flow__step {
    grid-template-columns: 64px minmax(0, 1fr);
  }

  .page-about .flow__step:not(:last-child)::after {
    left: 31px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .timeline__node,
  .page-about .timeline__node:hover {
    transition: none;
    transform: none;
  }
}
<<<END>>>