.page-about {
  --about-measure: 34em;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  line-height: 1.9;
  overflow-x: hidden;
}

.page-about .about-shell {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gut) 96px;
}

/* 面包屑 */
.page-about .about-crumb {
  padding: 24px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--text-faint);
}
.page-about .about-crumb a {
  color: var(--text-faint);
  text-decoration: none;
  transition: color .2s ease;
}
.page-about .about-crumb a:hover,
.page-about .about-crumb a:focus-visible {
  color: var(--orange);
}
.page-about .about-crumb span {
  margin: 0 .55em;
}

/* 首屏 */
.page-about .about-hero {
  padding: 52px 0 58px;
  border-bottom: 1px solid var(--hair);
}
.page-about .about-hero__title {
  margin: 16px 0 0;
  max-width: 15em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 7.6vw, 60px);
  line-height: 1.14;
  letter-spacing: -.03em;
  color: var(--paper);
}
.page-about .about-hero__lead {
  margin: 26px 0 0;
  max-width: 40em;
  font-size: 16.5px;
  color: var(--text-soft);
}
.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 40px;
  margin: 44px 0 0;
  padding: 0;
  list-style: none;
}
.page-about .about-hero__meta-item {
  display: flex;
  align-items: baseline;
  gap: 9px;
}
.page-about .about-hero__num {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 28px;
  line-height: 1;
  color: var(--cyan);
  letter-spacing: -.01em;
}
.page-about .about-hero__lab {
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--text-faint);
}

/* 章节骨架 */
.page-about .about-chapter {
  display: grid;
  gap: 20px;
  padding: 52px 0;
  border-bottom: 1px solid var(--hair);
}
.page-about .about-chapter:last-of-type {
  border-bottom: 0;
}

.page-about .about-chapter__aside {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px 16px;
}

.page-about .about-num {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 26px;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--orange);
  flex: none;
}

.page-about .about-aside-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.9;
  letter-spacing: .04em;
  color: var(--text-faint);
}

.page-about .about-chapter__body {
  max-width: var(--about-measure);
}
.page-about .about-chapter__body > * + * {
  margin-top: 20px;
}

.page-about .about-chapter__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 4.6vw, 33px);
  line-height: 1.3;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-about .about-p {
  margin: 0;
  font-size: 16.5px;
  color: var(--text-soft);
}

/* 团队人数大字 */
.page-about .about-team {
  display: flex;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 14px;
  padding: 22px 0 4px;
  border-top: 1px solid var(--hair);
  border-bottom: 1px solid var(--hair);
}
.page-about .about-team__num {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(52px, 12vw, 84px);
  line-height: .86;
  letter-spacing: -.03em;
  color: var(--cyan);
}
.page-about .about-team__unit {
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--text-faint);
  padding-bottom: 10px;
}

/* 图片 */
.page-about .about-media {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--panel);
}
.page-about .about-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about .about-media__cap {
  display: block;
  padding: 12px 16px;
  border-top: 1px solid var(--hair);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: .04em;
  color: var(--text-faint);
}
.page-about .about-media--tall {
  max-width: 520px;
}
.page-about .about-media--tall img {
  max-height: 640px;
}

/* 流程步骤 */
.page-about .about-flow {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--hair);
}
.page-about .about-flow__item {
  border-bottom: 1px solid var(--hair);
}
.page-about .about-flow__step summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.6;
  color: var(--paper);
}
.page-about .about-flow__step summary::-webkit-details-marker {
  display: none;
}
.page-about .about-flow__step summary::before {
  content: "+";
  flex: none;
  width: 16px;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 19px;
  line-height: 1;
  color: var(--orange);
}
.page-about .about-flow__step[open] summary::before {
  content: "–";
}
.page-about .about-flow__step summary:hover {
  color: var(--orange);
}
.page-about .about-flow__body {
  margin: 0;
  padding: 0 0 18px 30px;
  font-size: 15.5px;
  color: var(--text-soft);
}

/* 地域区块 */
.page-about .about-region {
  margin: 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--hair);
}
.page-about .about-ridge {
  display: block;
  width: 100%;
  height: 140px;
}
.page-about .about-ridge__fill {
  fill: rgba(52, 227, 208, .11);
}
.page-about .about-ridge__line {
  fill: none;
  stroke: var(--cyan);
  stroke-width: 1.4;
  opacity: .68;
}
.page-about .about-region__cards {
  display: grid;
  gap: 14px;
  margin-top: 18px;
}
.page-about .about-region__card {
  padding: 18px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r);
}
.page-about .about-region__card p {
  margin: 10px 0 0;
  font-size: 15.5px;
  color: var(--text-soft);
}
.page-about .about-region__tag {
  display: inline-block;
  padding: 3px 10px;
  border: 1px solid var(--orange);
  border-radius: var(--r);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--orange);
}
.page-about .about-region__tag--alt {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* 赛季时间线 */
.page-about .about-tl {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--hair);
}
.page-about .about-tl__item {
  display: grid;
  gap: 8px;
  padding: 20px 0;
  border-bottom: 1px solid var(--hair);
}
.page-about .about-tl__tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--orange);
}
.page-about .about-tl__text {
  margin: 0;
  font-size: 15.5px;
  color: var(--text-soft);
}

/* 延伸入口 */
.page-about .about-next {
  padding: 64px 0 0;
  border-top: 1px solid var(--hair);
}
.page-about .about-next__title {
  margin: 0 0 26px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 3.6vw, 26px);
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--paper);
}
.page-about .about-next__grid {
  display: grid;
  gap: 14px;
}
.page-about .about-next__card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 22px 24px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--r);
  text-decoration: none;
  color: var(--ink);
  transition: transform .2s ease, box-shadow .2s ease;
}
.page-about .about-next__card:hover,
.page-about .about-next__card:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift);
}
.page-about .about-next__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--orange);
}
.page-about .about-next__t {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
}

/* 桌面端非对称两栏 */
@media (min-width: 920px) {
  .page-about .about-chapter {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 58px;
    padding: 72px 0;
  }
  .page-about .about-chapter__aside {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    position: sticky;
    top: 96px;
    align-self: start;
  }
  .page-about .about-num {
    font-size: 30px;
  }
  .page-about .about-region__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
  .page-about .about-next__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
  .page-about .about-tl__item {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 22px;
    align-items: baseline;
  }
}

@media (min-width: 1120px) {
  .page-about .about-hero {
    padding: 68px 0 72px;
  }
  .page-about .about-shell {
    padding-bottom: 120px;
  }
}

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