.page-about {
  --about-role-color: #3D7BFF;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: 20px 0 44px;
}

.page-about .breadcrumbs {
  margin-bottom: 22px;
}

.page-about .about-hero-grid {
  display: grid;
  gap: 28px;
}

.page-about .about-hero-copy {
  order: -1;
}

.page-about .about-hero-media {
  border-radius: var(--r-card);
  overflow: hidden;
}

.page-about .media-frame[data-ratio="2:1"] {
  aspect-ratio: 2 / 1;
}

.page-about .media-frame[data-ratio="3:2"] {
  aspect-ratio: 3 / 2;
}

.page-about .about-hero h1 {
  font-family: var(--f-head);
  font-size: 40px;
  line-height: 1.02;
  letter-spacing: -.02em;
  text-transform: uppercase;
  margin: 10px 0 18px;
  color: var(--c-text);
}

.page-about .about-hero .lede {
  font-size: 16px;
  line-height: 1.75;
  max-width: 46ch;
}

.page-about .about-hero-note {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
  max-width: 48ch;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 通用小节头 ---------- */
.page-about .about-head {
  max-width: 720px;
}

.page-about .about-head .lede {
  margin-top: 12px;
}

/* ---------- 使命 ---------- */
.page-about .about-mission {
  padding-top: 56px;
}

.page-about .about-mission-grid {
  display: grid;
  gap: 18px;
}

.page-about .about-mission-mark {
  font-family: var(--f-num);
  font-size: 42px;
  line-height: 1;
  color: #16213C;
  letter-spacing: .04em;
}

.page-about .about-aside {
  margin-top: 22px;
  padding-left: 16px;
  border-left: 2px solid var(--c-violet);
  color: var(--c-muted);
  font-size: 14px;
  line-height: 1.75;
}

/* ---------- 赛季档案 ---------- */
.page-about .about-archive .about-head {
  margin-bottom: 40px;
}

.page-about .about-archive-grid {
  display: grid;
  gap: 40px;
}

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

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 12px;
  bottom: 18px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, #37E6D0, #8B6BFF 55%, #F0B23C);
  opacity: .5;
}

.page-about .about-node {
  position: relative;
  padding: 0 0 30px 40px;
  outline: none;
}

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

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--c-bg);
  border: 2px solid #2A3A5E;
  transition: border-color .22s ease-out, box-shadow .22s ease-out;
}

.page-about .about-node:hover::before,
.page-about .about-node:focus-visible::before {
  border-color: var(--c-gold);
  box-shadow: 0 0 0 5px rgba(240, 178, 60, .14);
}

.page-about .about-node:focus-visible {
  outline: none;
}

.page-about .about-node-year {
  font-family: var(--f-num);
  font-variant-numeric: tabular-nums;
  font-size: 18px;
  line-height: 1.2;
  letter-spacing: .06em;
  color: var(--c-cyan);
  margin: 0;
}

.page-about .about-node-title {
  font-family: var(--f-head);
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--c-text);
  margin: 6px 0 8px;
}

.page-about .about-node p + p,
.page-about .about-node-title + p {
  margin: 0;
  color: var(--c-muted);
  font-size: 14px;
  line-height: 1.72;
  max-width: 48ch;
}

.page-about .about-spark {
  margin: 0;
  padding: 20px 18px 18px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-card);
  background: var(--grad-panel);
}

.page-about .about-spark svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-spark figcaption {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-muted);
}

/* ---------- 口径原则 ---------- */
.page-about .about-principles-section {
  padding-top: 64px;
}

.page-about .about-principles {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
}

.page-about .about-principle {
  position: relative;
  padding: 22px 12px 22px 30px;
  border-top: 1px solid var(--c-line);
  outline: none;
  transition: background-color .22s ease-out;
}

.page-about .about-principle:last-child {
  border-bottom: 1px solid var(--c-line);
}

.page-about .about-principle::before {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  bottom: 24px;
  width: 4px;
  border-radius: 4px;
  background: var(--c-line);
  transition: background-color .22s ease-out, top .22s ease-out, bottom .22s ease-out;
}

.page-about .about-principle:hover::before,
.page-about .about-principle:focus-visible::before {
  top: 14px;
  bottom: 14px;
  background: var(--c-cyan);
}

.page-about .about-principle h3 {
  margin: 0 0 8px;
  color: var(--c-text);
  font-family: var(--f-head);
  letter-spacing: -.01em;
}

.page-about .about-principle p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-muted);
}

.page-about .about-p-idx {
  display: inline-block;
  margin-right: 12px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-violet);
}

/* ---------- 团队（浅色反转区） ---------- */
.page-about .about-team-grid {
  display: grid;
  gap: 32px;
}

.page-about .about-team-media {
  border-radius: var(--r-card);
  overflow: hidden;
}

.page-about .about-team-copy .eyebrow {
  color: var(--c-ink-muted);
}

.page-about .about-team-copy h2 {
  margin: 10px 0 14px;
  color: var(--c-ink);
}

.page-about .about-team-lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.78;
  color: var(--c-ink-muted);
  max-width: 46ch;
}

.page-about .about-roles {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-about .about-role {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 14px;
  row-gap: 4px;
  align-items: baseline;
  padding: 14px 0;
  border-top: 1px solid rgba(10, 15, 30, .12);
  border-left: 4px solid var(--about-role-color);
  border-radius: 0 var(--r-row) var(--r-row) 0;
  padding-left: 14px;
}

.page-about .about-role:nth-child(2) { --about-role-color: #E14C7A; }
.page-about .about-role:nth-child(3) { --about-role-color: #4FC3A1; }
.page-about .about-role:nth-child(4) { --about-role-color: #E07A3C; }

.page-about .about-role-num {
  font-size: 20px;
  line-height: 1.1;
  color: var(--about-role-color);
}

.page-about .about-role-name {
  font-family: var(--f-head);
  font-size: 18px;
  letter-spacing: -.01em;
  color: var(--c-ink);
}

.page-about .about-role-desc {
  grid-column: 2;
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-ink-muted);
}

/* ---------- 复核流程 ---------- */
.page-about .about-flow-section .about-head {
  margin-bottom: 38px;
}

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

.page-about .about-step {
  position: relative;
  padding-top: 24px;
}

.page-about .about-step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--c-line);
}

.page-about .about-step:nth-child(1)::before { background: var(--c-cyan); }
.page-about .about-step:nth-child(2)::before { background: var(--c-violet); }
.page-about .about-step:nth-child(3)::before { background: var(--c-gold); }
.page-about .about-step:nth-child(4)::before { background: var(--c-red-soft); }

.page-about .about-step-idx {
  display: block;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--c-muted);
}

.page-about .about-step h3 {
  margin: 8px 0 8px;
  font-family: var(--f-head);
  color: var(--c-text);
  letter-spacing: -.01em;
}

.page-about .about-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--c-muted);
}

.page-about .about-flow-note {
  margin: 34px 0 0;
  padding-top: 20px;
  border-top: 1px solid var(--c-line);
  font-size: 14px;
  line-height: 1.78;
  color: var(--c-muted);
  max-width: 62ch;
}

.page-about .about-flow-note a {
  color: var(--c-cyan);
}

/* ---------- 边界 ---------- */
.page-about .about-limits-section .about-head {
  margin-bottom: 32px;
}

.page-about .about-limits {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 24px;
}

.page-about .about-limit {
  padding-left: 18px;
  border-left: 2px solid var(--c-red);
}

.page-about .about-limit h3 {
  margin: 0 0 8px;
  font-family: var(--f-head);
  color: var(--c-text);
  letter-spacing: -.01em;
}

.page-about .about-limit p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-muted);
  max-width: 52ch;
}

.page-about .about-limit a {
  color: var(--c-gold);
}

/* ---------- 本地交流 ---------- */
.page-about .about-community-grid {
  display: grid;
  gap: 30px;
}

.page-about .about-community-media {
  border-radius: var(--r-card);
  overflow: hidden;
}

.page-about .about-community-copy h2 {
  margin: 10px 0 16px;
}

.page-about .about-community-copy p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--c-muted);
  max-width: 50ch;
}

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

/* ---------- 收束入口 ---------- */
.page-about .about-cta-box {
  display: grid;
  gap: 24px;
  padding: 28px 24px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-card);
  background: var(--grad-panel);
  position: relative;
  overflow: hidden;
}

.page-about .about-cta-box::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 120px;
  height: 4px;
  background: var(--grad-rule);
}

.page-about .about-cta-copy h2 {
  margin: 8px 0 10px;
}

.page-about .about-cta-copy p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-muted);
  max-width: 52ch;
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-self: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-roles {
    grid-template-columns: 1fr 1fr;
    column-gap: 32px;
  }

  .page-about .about-flow {
    grid-template-columns: 1fr 1fr;
    column-gap: 40px;
  }

  .page-about .about-cta-box {
    grid-template-columns: 1.4fr .6fr;
    align-items: center;
    padding: 34px 32px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 36px 0 76px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: 1.05fr .95fr;
    gap: 56px;
    align-items: center;
  }

  .page-about .about-hero-copy {
    order: 0;
  }

  .page-about .about-hero h1 {
    font-size: 64px;
  }

  .page-about .about-mission-grid {
    grid-template-columns: 1fr 3fr;
    gap: 56px;
    align-items: start;
  }

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

  .page-about .about-archive-grid {
    grid-template-columns: 1.4fr .6fr;
    gap: 64px;
    align-items: start;
  }

  .page-about .about-spark {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-about .about-team-grid {
    grid-template-columns: .8fr 1.2fr;
    gap: 56px;
    align-items: start;
  }

  .page-about .about-community-grid {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
  }

  .page-about .about-flow {
    grid-template-columns: repeat(4, 1fr);
    gap: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-node::before,
  .page-about .about-principle::before,
  .page-about .about-principle {
    transition: none;
  }
}
<<<END>>>