.page-about {
  --about-axis-w: 96px;
  --about-num-unit: 0.42em;
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

.page-about .media-frame {
  margin: 0;
}

.page-about .about-crumbs {
  padding-top: clamp(14px, 2vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-top: clamp(20px, 4vw, 46px);
}

.page-about .about-hero .kicker {
  margin: 0 0 clamp(14px, 2vw, 22px);
  color: var(--mist);
  letter-spacing: 0.14em;
}

.page-about .about-hero__title {
  margin: 0 0 clamp(16px, 2.4vw, 28px);
  font-size: clamp(38px, 8vw, 92px);
  line-height: 1.04;
  font-weight: 900;
  letter-spacing: -0.025em;
  max-width: 12em;
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--signal);
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 33em;
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-hero__stats {
  list-style: none;
  margin: clamp(24px, 3.6vw, 40px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--wire);
  border: 1px solid var(--wire);
}

.page-about .about-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: clamp(14px, 2vw, 22px) clamp(12px, 1.6vw, 18px);
  background: var(--ink);
}

.page-about .about-hero__stat-key {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-about .about-num {
  display: block;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(26px, 4.4vw, 42px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.page-about .about-num--signal {
  color: var(--signal);
}

.page-about .about-num--pitch {
  color: var(--pitch);
}

.page-about .about-num__unit {
  font-size: var(--about-num-unit);
  margin-left: 0.12em;
  letter-spacing: 0;
  color: var(--mist);
}

.page-about .about-hero__media {
  margin-top: clamp(26px, 4vw, 46px);
}

/* ---------- 通用章节骨架 ---------- */
.page-about .about-block {
  padding: clamp(40px, 6vw, 82px) 0;
}

.page-about .about-block + .about-block {
  border-top: 1px solid var(--wire);
}

.page-about .about-block__inner {
  display: grid;
  gap: clamp(16px, 2.4vw, 26px);
}

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

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

.page-about .about-axis__num {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--signal);
}

.page-about .about-axis__text {
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--mist);
}

.page-about .about-title {
  margin: 0 0 clamp(14px, 2.2vw, 24px);
  font-size: clamp(23px, 3.4vw, 38px);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -0.015em;
  max-width: 16em;
}

.page-about .about-copy p {
  margin: 0 0 0.9em;
  max-width: 34em;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
  color: var(--mist);
}

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

.page-about .about-copy strong {
  color: var(--paper);
  font-weight: 700;
}

/* ---------- 覆盖标尺 ---------- */
.page-about .about-ruler {
  margin: clamp(22px, 3vw, 34px) 0;
  padding-top: clamp(16px, 2.4vw, 26px);
  border-top: 2px solid var(--signal);
  display: grid;
  gap: clamp(18px, 3vw, 32px);
}

.page-about .about-ruler__num {
  display: flex;
  align-items: baseline;
  gap: 0.1em;
  margin: 0;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(72px, 14vw, 152px);
  line-height: 0.8;
  letter-spacing: -0.05em;
  color: var(--paper);
}

.page-about .about-ruler__num small {
  font-family: var(--font-cn);
  font-size: 0.15em;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--signal);
}

.page-about .about-ruler__rows {
  display: grid;
  gap: 10px;
  min-width: 0;
}

.page-about .about-ruler__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 9px;
  border-bottom: 1px dashed var(--wire);
}

.page-about .about-ruler__val {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: clamp(19px, 2.6vw, 26px);
  letter-spacing: -0.01em;
  color: var(--signal);
}

.page-about .about-ruler__key {
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--mist);
  text-align: right;
}

.page-about .about-cities {
  list-style: none;
  margin: clamp(18px, 2.6vw, 28px) 0 0;
  padding: 0 0 10px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-cities li {
  flex: 0 0 auto;
  padding: 7px 13px;
  border: 1px solid var(--wire);
  background: var(--panel);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--mist);
  white-space: nowrap;
}

.page-about .about-cities li:nth-child(4n + 1) {
  border-color: var(--signal);
  color: var(--signal);
}

/* ---------- 数据流程 ---------- */
.page-about .about-flow {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-step {
  position: relative;
  padding: 0 0 clamp(20px, 3vw, 30px) clamp(22px, 3vw, 30px);
  border-left: 1px solid var(--wire);
}

.page-about .about-step:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .about-step::before {
  content: "";
  position: absolute;
  left: -4.5px;
  top: 5px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--signal);
}

.page-about .about-step:nth-child(2)::before {
  background: var(--pitch);
}

.page-about .about-step:nth-child(3)::before {
  background: var(--violet);
}

.page-about .about-step__tag {
  display: block;
  margin-bottom: 7px;
  font-size: 12px;
  letter-spacing: 0.24em;
  color: var(--pitch);
}

.page-about .about-step__title {
  margin: 0 0 7px;
  font-size: clamp(16px, 1.9vw, 20px);
  line-height: 1.35;
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-step p {
  margin: 0;
  max-width: 32em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--wire);
  border: 1px solid var(--wire);
}

.page-about .about-team__card {
  min-width: 0;
  padding: clamp(18px, 2.6vw, 28px);
  background: var(--panel);
  border-top: 3px solid var(--violet);
}

.page-about .about-team__card:nth-child(2) {
  border-top-color: var(--signal);
}

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

.page-about .about-team__no {
  display: block;
  margin-bottom: 14px;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-about .about-team__name {
  margin: 0 0 8px;
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 700;
  color: var(--paper);
}

.page-about .about-team__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 社群 ---------- */
.page-about .about-community {
  display: grid;
  gap: clamp(22px, 3vw, 36px);
  margin-top: clamp(20px, 3vw, 30px);
}

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

.page-about .about-community__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--wire);
  border: 1px solid var(--wire);
}

.page-about .about-community__stats li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
  padding: clamp(14px, 2vw, 20px);
  background: var(--ink);
}

.page-about .about-community__key {
  font-size: 12px;
  letter-spacing: 0.13em;
  color: var(--mist);
}

/* ---------- 赛季时间轴 ---------- */
.page-about .about-seasons {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  border-top: 1px solid var(--wire);
}

.page-about .about-season {
  border-bottom: 1px solid var(--wire);
}

.page-about .about-season summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: clamp(12px, 1.8vw, 18px) 0;
  transition: color var(--dur) var(--ease);
}

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

.page-about .about-season summary:hover .about-season__title,
.page-about .about-season summary:focus-visible .about-season__title {
  color: var(--signal);
}

.page-about .about-season__no {
  min-width: 2.4em;
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--signal);
}

.page-about .about-season__title {
  font-size: clamp(14.5px, 1.7vw, 17px);
  line-height: 1.5;
  font-weight: 600;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

.page-about .about-season__mark {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--mist);
  border-bottom: 2px solid var(--mist);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform var(--dur) var(--ease);
}

.page-about .about-season details[open] .about-season__mark {
  transform: rotate(-135deg) translate(-2px, -2px);
}

.page-about .about-season__body {
  padding: 0 0 clamp(14px, 2vw, 20px) calc(2.4em + 12px);
}

.page-about .about-season__body p {
  margin: 0;
  max-width: 34em;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 延伸入口 ---------- */
.page-about .about-next {
  margin-top: clamp(42px, 6vw, 76px);
  padding: clamp(32px, 5vw, 60px) 0 clamp(8px, 2vw, 20px);
  border-top: 2px solid var(--wire);
}

.page-about .about-next__title {
  margin: 0 0 clamp(18px, 2.6vw, 28px);
  font-size: clamp(22px, 2.8vw, 30px);
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-about .about-next__grid {
  display: grid;
  gap: 1px;
  background: var(--wire);
  border: 1px solid var(--wire);
}

.page-about .about-next__card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
  padding: clamp(16px, 2.4vw, 24px);
  background: var(--panel);
  color: var(--paper);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-about .about-next__card:hover,
.page-about .about-next__card:focus-visible {
  border-bottom-color: var(--signal);
  background: var(--coord);
}

.page-about .about-next__k {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.page-about .about-next__d {
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-ruler {
    grid-template-columns: minmax(0, auto) minmax(0, 1fr);
    align-items: end;
    column-gap: clamp(28px, 5vw, 72px);
  }

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

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

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

@media (min-width: 880px) {
  .page-about .about-block__inner {
    grid-template-columns: var(--about-axis-w) minmax(0, 1fr);
    column-gap: clamp(24px, 4vw, 60px);
  }

  .page-about .about-axis {
    flex-direction: column;
    align-items: center;
    gap: 16px;
    padding-top: 6px;
  }

  .page-about .about-axis__text {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    letter-spacing: 0.36em;
  }

  .page-about .about-axis::after {
    content: "";
    display: block;
    width: 1px;
    height: 56px;
    background: linear-gradient(180deg, var(--signal), rgba(255, 106, 26, 0));
  }
}

@media (min-width: 960px) {
  .page-about .about-community {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .about-next__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-about .about-flow {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: start;
    column-gap: clamp(24px, 3.4vw, 44px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-season summary,
  .page-about .about-season__title,
  .page-about .about-season__mark,
  .page-about .about-next__card {
    transition: none;
  }
}
<<<END>>>