.page-about {
  --about-measure: 34rem;
  --about-rule: rgba(26, 26, 26, .16);
  background: var(--c-cream);
  color: var(--c-ink);
  padding-bottom: 8px;
}

.page-about .eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-red);
  margin: 0 0 14px;
}

.page-about .eyebrow--light {
  color: var(--c-yellow);
}

.page-about .breadcrumb {
  margin: 18px 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-ink-soft);
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.page-about .breadcrumb a {
  color: var(--c-ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--c-red);
  border-bottom-color: var(--c-blue);
}

/* 首屏 */
.page-about .about-hero {
  padding-top: 34px;
  padding-bottom: 42px;
}

.page-about .about-hero-title {
  font-family: var(--font-editorial);
  font-weight: 700;
  font-size: clamp(2rem, 6.2vw, 4.3rem);
  line-height: 1.1;
  letter-spacing: -.01em;
  margin: 0 0 28px;
  max-width: 22ch;
  text-wrap: balance;
}

.page-about .about-hero-grid {
  display: grid;
  gap: 28px;
  border-top: 3px solid var(--c-ink);
  padding-top: 26px;
}

.page-about .about-lede {
  font-family: var(--font-editorial);
  font-size: 17px;
  line-height: 1.85;
  margin: 0;
  max-width: var(--about-measure);
  color: var(--c-ink);
}

.page-about .about-lede::first-letter {
  float: left;
  font-family: var(--font-editorial);
  font-size: 3.4em;
  line-height: .82;
  font-weight: 700;
  color: var(--c-red);
  padding: 4px 10px 0 0;
}

.page-about .about-hero-aside {
  background: var(--c-paper);
  border: 1px solid var(--about-rule);
  border-left: 4px solid var(--c-yellow);
  padding: 20px 22px;
}

.page-about .about-aside-key {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--c-brown);
}

.page-about .about-aside-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  font-size: 14px;
  color: var(--c-ink-soft);
}

.page-about .about-aside-num {
  display: block;
  font-family: var(--font-display);
  font-size: 24px;
  line-height: 1.1;
  color: var(--c-ink);
}

/* 目录条 */
.page-about .about-toc {
  display: flex;
  align-items: center;
  gap: 10px;
  overflow-x: auto;
  padding-top: 4px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--about-rule);
  font-size: 13px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-about .about-toc-label {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--c-brown);
  padding-right: 6px;
  border-right: 1px solid var(--about-rule);
}

.page-about .about-toc a {
  flex: 0 0 auto;
  color: var(--c-ink);
  text-decoration: none;
  padding: 5px 12px;
  border: 1px solid var(--about-rule);
  border-radius: 999px;
  transition: background-color .18s var(--ease), border-color .18s var(--ease), color .18s var(--ease);
}

.page-about .about-toc a:hover,
.page-about .about-toc a:focus-visible {
  background: var(--c-yellow);
  border-color: var(--c-ink);
  color: var(--c-ink);
}

/* 分栏 */
.page-about .about-split {
  display: grid;
  gap: 32px;
  align-items: start;
}

.page-about .about-copy {
  min-width: 0;
}

.page-about .about-copy p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-ink);
  max-width: var(--about-measure);
  margin: 0 0 18px;
}

.page-about .editorial-title {
  font-family: var(--font-editorial);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  line-height: 1.25;
  margin: 0 0 20px;
  color: var(--c-ink);
}

.page-about .about-note {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-brown);
  border-left: 3px solid var(--c-red);
  padding-left: 14px;
  max-width: var(--about-measure);
  margin: 22px 0 0;
}

/* 图片 */
.page-about .about-figure {
  margin: 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--about-rule);
}

.page-about .about-figure figcaption {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--c-ink-soft);
  margin-top: 10px;
}

/* 原则问答 */
.page-about .about-principles {
  background: var(--c-paper);
  border-top: 1px solid var(--about-rule);
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-quotes {
  display: grid;
  gap: 10px;
  margin-top: 26px;
  max-width: 38rem;
}

.page-about .about-quote {
  background: var(--c-cool);
  border: 1px solid var(--about-rule);
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-about .about-quote[open] {
  background: #fff;
  border-color: var(--c-ink);
}

.page-about .about-quote:hover {
  border-color: var(--c-blue);
}

.page-about .about-quote summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 18px;
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: .01em;
  color: var(--c-ink);
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.page-about .about-quote summary::before {
  content: "";
  width: 10px;
  height: 10px;
  flex: 0 0 auto;
  background: var(--c-red);
  border-radius: 2px;
  transition: background-color .18s var(--ease);
}

.page-about .about-quote[open] summary::before {
  background: var(--c-green);
}

.page-about .about-quote p {
  margin: 0;
  padding: 0 18px 16px 38px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-ink-soft);
}

/* 时间轴 */
.page-about .about-timeline {
  position: relative;
  overflow: hidden;
  background: var(--c-ink);
  color: var(--c-cream);
  padding-top: 56px;
  padding-bottom: 56px;
}

.page-about .about-timeline-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .16;
  pointer-events: none;
}

.page-about .about-timeline-inner {
  position: relative;
  z-index: 1;
}

.page-about .about-timeline-title {
  color: var(--c-cream);
  max-width: 18ch;
}

.page-about .about-timeline-lede {
  max-width: var(--about-measure);
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(255, 248, 231, .78);
  margin: 0 0 26px;
}

.page-about .about-ruler {
  display: block;
  width: 100%;
  max-width: 720px;
  height: auto;
  margin: 0 0 24px;
}

.page-about .about-nodes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-left: 1px solid rgba(255, 248, 231, .26);
  margin-left: 6px;
  max-width: 46rem;
}

.page-about .about-node {
  position: relative;
  display: grid;
  gap: 6px;
  padding: 16px 0 16px 24px;
  outline: none;
}

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 26px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--c-yellow);
  box-shadow: 0 0 0 4px rgba(255, 209, 102, .16);
  transition: background-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-about .about-node:hover::before,
.page-about .about-node:focus-within::before,
.page-about .about-node:focus::before {
  background: var(--c-red);
  box-shadow: 0 0 0 5px rgba(230, 57, 70, .3);
}

.page-about .about-node-year {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: var(--c-yellow);
  letter-spacing: .04em;
}

.page-about .about-node:hover .about-node-year,
.page-about .about-node:focus-within .about-node-year,
.page-about .about-node:focus .about-node-year {
  color: #fff;
}

.page-about .about-node-body h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.4;
  color: var(--c-cream);
}

.page-about .about-node-body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(255, 248, 231, .74);
  max-width: 34rem;
}

.page-about .about-node-extra {
  overflow: hidden;
}

.page-about .about-node-extra p {
  margin: 8px 0 0;
  padding-left: 12px;
  border-left: 2px solid rgba(255, 209, 102, .5);
  color: rgba(255, 248, 231, .62);
  font-size: 13.5px;
}

/* 团队 */
.page-about .about-team-head {
  max-width: 44rem;
  margin-bottom: 30px;
}

.page-about .about-team-lede {
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-ink-soft);
  margin: 0;
}

.page-about .about-team-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.page-about .about-stat {
  background: var(--c-paper);
  border: 1px solid var(--about-rule);
  border-top: 3px solid var(--c-ink);
  padding: 20px;
  transition: border-top-color .18s var(--ease), background-color .18s var(--ease);
}

.page-about .about-stat:hover {
  border-top-color: var(--c-blue);
  background: #fff;
}

.page-about .about-stat--accent {
  border-top-color: var(--c-red);
  background: var(--c-cool);
}

.page-about .about-stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 32px;
  line-height: 1.05;
  color: var(--c-red);
  margin-bottom: 6px;
}

.page-about .about-stat--accent .about-stat-num {
  font-size: 22px;
  letter-spacing: .02em;
}

.page-about .about-stat-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--c-brown);
  margin-bottom: 10px;
}

.page-about .about-stat p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-ink-soft);
}

.page-about .about-pull {
  margin: 32px 0 0;
  max-width: 36rem;
  font-family: var(--font-editorial);
  font-size: clamp(1.15rem, 2.6vw, 1.5rem);
  line-height: 1.6;
  color: var(--c-brown);
  border-left: 4px solid var(--c-red);
  padding: 4px 0 4px 18px;
}

/* 合作 */
.page-about .about-partners {
  background: var(--c-cool);
  border-top: 1px solid var(--about-rule);
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-partner-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.page-about .about-dots {
  background: var(--c-ink);
  color: var(--c-cream);
  padding: 22px;
  border-radius: 2px;
  min-width: 0;
}

.page-about .about-dots-caption {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--c-yellow);
}

.page-about .about-dot-grid {
  height: 168px;
  background-image:
    radial-gradient(circle at 3px 3px, rgba(255, 209, 102, .85) 2.4px, transparent 2.6px),
    radial-gradient(circle at 3px 3px, rgba(0, 180, 216, .55) 2.4px, transparent 2.6px);
  background-size: 28px 28px, 28px 28px;
  background-position: 0 0, 14px 14px;
  border-left: 2px solid rgba(230, 57, 70, .8);
}

/* 赛事与标签 */
.page-about .about-coverage-head {
  max-width: 46rem;
  margin-bottom: 26px;
}

.page-about .about-coverage-lede {
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-ink-soft);
  margin: 0;
}

.page-about .about-coverage-grid {
  display: grid;
  gap: 14px;
  margin-bottom: 32px;
}

.page-about .about-coverage-card {
  background: var(--c-paper);
  border-left: 4px solid var(--c-yellow);
  padding: 18px 20px;
}

.page-about .about-coverage-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 15px;
  color: var(--c-ink);
}

.page-about .about-coverage-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-ink-soft);
}

.page-about .about-fee-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 13.5px;
}

.page-about .about-fee-table caption {
  text-align: left;
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--c-brown);
  padding-bottom: 10px;
}

.page-about .about-fee-table th,
.page-about .about-fee-table td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--about-rule);
  line-height: 1.45;
}

.page-about .about-fee-table thead th {
  background: var(--c-ink);
  color: var(--c-cream);
  font-weight: 600;
  border-bottom: none;
}

.page-about .about-fee-table tbody th {
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--c-ink);
}

.page-about .about-fee-table tbody tr:nth-child(even) {
  background: var(--c-cool);
}

/* 结尾 */
.page-about .about-cta {
  padding-bottom: 56px;
}

.page-about .about-cta-inner {
  display: grid;
  gap: 22px;
  background: var(--c-red);
  color: #fff;
  padding: 28px 24px;
  border-radius: 2px;
  clip-path: polygon(0 0, 100% 3%, 100% 100%, 0 97%);
}

.page-about .about-cta-inner .editorial-title {
  color: #fff;
  margin-bottom: 10px;
}

.page-about .about-cta-inner p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255, 255, 255, .88);
  max-width: 34rem;
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.page-about .about-cta-actions .btn--ghost {
  border-color: #fff;
  color: #fff;
}

.page-about .about-cta-actions .btn--ghost:hover,
.page-about .about-cta-actions .btn--ghost:focus-visible {
  background: #fff;
  color: var(--c-red);
}

.page-about .about-cta-actions .btn--quiet {
  color: #fff;
}

/* 断点 */
@media (min-width: 640px) {
  .page-about .about-team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-top: 44px;
    padding-bottom: 52px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }

  .page-about .about-lede {
    font-size: 18.5px;
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: 48px;
  }

  .page-about .about-split--reverse {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  }

  .page-about .about-principles .about-figure {
    margin-top: 12px;
  }

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

  .page-about .about-cta-inner {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: center;
    padding: 44px 40px;
  }

  .page-about .about-cta-actions {
    justify-content: flex-end;
  }

  .page-about .about-timeline {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .page-about .about-node {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 20px;
    padding-left: 32px;
  }

  .page-about .about-node-extra {
    max-height: 0;
    opacity: 0;
    transition: max-height .22s var(--ease), opacity .22s var(--ease);
  }

  .page-about .about-node:hover .about-node-extra,
  .page-about .about-node:focus .about-node-extra,
  .page-about .about-node:focus-within .about-node-extra {
    max-height: 10rem;
    opacity: 1;
  }
}

@media (min-width: 1100px) {
  .page-about .about-hero-title {
    max-width: 24ch;
  }

  .page-about .about-lede {
    font-size: 19px;
  }

  .page-about .about-dots {
    padding: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition-duration: .001ms !important;
  }
}
<<<END>>>