.page-about {
  padding-bottom: 0;
}

.page-about .breadcrumb {
  margin: 18px 0 0;
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  padding-top: 18px;
  padding-bottom: 44px;
}

.page-about .about-hero__title {
  margin: 14px 0 0;
}

.page-about .about-hero__body {
  display: grid;
  gap: 28px;
  margin-top: 22px;
}

.page-about .about-hero__lede {
  max-width: 62ch;
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 20px;
}

.page-about .about-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.page-about .about-hero__num {
  font-family: var(--font-num);
  font-size: 30px;
  line-height: 1;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  color: var(--orange);
}

.page-about .about-hero__fact-label {
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--index);
  line-height: 1.5;
}

.page-about .about-hero__media {
  margin: 34px 0 0;
}

@media (min-width: 900px) {
  .page-about .about-hero__body {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    align-items: end;
    gap: 52px;
  }
  .page-about .about-hero__facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px 22px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 阶梯时间轴 ---------- */
.page-about .about-ladder {
  background:
    radial-gradient(120% 90% at 8% 0%, rgba(226, 104, 31, .16), transparent 58%),
    var(--ink-deep);
  border-radius: var(--r-lg);
  padding: 48px 0 58px;
  margin: 8px 12px 0;
}

.page-about .year-nav {
  list-style: none;
  margin: 22px 0 34px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .year-nav a.pill {
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: transform .25s ease, background-color .25s ease;
}

.page-about .year-nav a.pill:hover,
.page-about .year-nav a.pill:focus-visible {
  transform: translateY(-2px);
  background-color: var(--orange-deep);
}

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

.page-about .ladder__step {
  display: grid;
  grid-template-columns: minmax(74px, 104px) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 30px 0;
}

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

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

.page-about .ladder__year {
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
}

.page-about .ladder__num {
  font-family: var(--font-score);
  font-size: clamp(36px, 8vw, 58px);
  font-weight: 700;
  line-height: .88;
  letter-spacing: -.02em;
  font-variant-numeric: tabular-nums;
  color: var(--paper);
  display: block;
}

.page-about .ladder__plate {
  position: relative;
  background: linear-gradient(180deg, var(--zone-soft), var(--zone));
  border-radius: var(--r-md);
  padding: 24px 22px 26px;
  box-shadow: 0 14px 32px rgba(0, 0, 0, .28);
}

.page-about .ladder__plate::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 0;
  width: 44px;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: linear-gradient(90deg, var(--orange), var(--whistle));
}

.page-about .ladder__title {
  margin: 4px 0 10px;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 19px;
  line-height: 1.45;
  color: var(--paper);
}

.page-about .ladder__plate p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--index);
}

@media (min-width: 960px) {
  .page-about .about-ladder {
    padding: 62px 0 74px;
  }
  .page-about .ladder__step {
    grid-template-columns: minmax(120px, 176px) minmax(0, 1fr);
    gap: 30px;
    padding: 38px 0;
  }
  .page-about .ladder__num {
    font-size: clamp(52px, 5.2vw, 76px);
  }
  .page-about .ladder__step:nth-child(2) .ladder__plate {
    margin-left: 6%;
  }
  .page-about .ladder__step:nth-child(3) .ladder__plate {
    margin-left: 12%;
  }
  .page-about .ladder__step:nth-child(4) .ladder__plate {
    margin-left: 18%;
  }
  .page-about .ladder__plate {
    padding: 28px 30px 30px;
  }
  .page-about .ladder__plate::before {
    left: 30px;
  }
  .page-about .ladder__title {
    font-size: 21px;
  }
}

/* ---------- 工作方式 ---------- */
.page-about .about-desk {
  padding: 56px 0;
}

.page-about .about-desk__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1.26;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-about .about-desk__cols {
  display: grid;
  gap: 30px;
}

.page-about .about-desk__text p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--paper);
}

.page-about .about-desk__text p:last-of-type {
  margin-bottom: 22px;
}

.page-about .about-desk__pair {
  display: grid;
  gap: 12px;
}

.page-about .about-desk__media {
  margin: 0;
}

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

@media (min-width: 960px) {
  .page-about .about-desk__cols {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }
}

/* ---------- 覆盖联赛 ---------- */
.page-about .about-coverage {
  padding-bottom: 56px;
}

.page-about .league-grid {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-about .league-tag {
  padding: 18px 20px;
  border-radius: var(--r-md);
  background: var(--zone);
  border-left: 3px solid var(--line-strong);
  transition: transform .28s ease, background-color .28s ease;
}

.page-about .league-tag--ball {
  border-left-color: var(--orange);
}

.page-about .league-tag--foot {
  border-left-color: var(--grass);
}

.page-about .league-tag--open {
  border-left-color: var(--whistle);
}

.page-about .league-tag:hover,
.page-about .league-tag:focus-within,
.page-about .league-tag:focus {
  transform: translateY(-3px);
  background: var(--zone-soft);
  outline: none;
}

.page-about .league-tag__name {
  display: block;
  font-size: 17px;
  font-weight: 500;
  color: var(--paper);
  line-height: 1.4;
}

.page-about .league-tag__note {
  display: block;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  margin-top: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--index);
  transition: max-height .32s ease, opacity .32s ease, margin-top .32s ease;
}

.page-about .league-tag:hover .league-tag__note,
.page-about .league-tag:focus-within .league-tag__note,
.page-about .league-tag:focus .league-tag__note {
  max-height: 8em;
  opacity: 1;
  margin-top: 8px;
}

@media (hover: none) {
  .page-about .league-tag__note {
    max-height: 8em;
    opacity: 1;
    margin-top: 8px;
  }
}

@media (min-width: 720px) {
  .page-about .league-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1120px) {
  .page-about .league-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 升降级形势 ---------- */
.page-about .about-rank {
  padding: 0 0 60px;
}

.page-about .about-rank__box {
  display: grid;
  gap: 26px;
  padding: 32px 22px;
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 100% at 100% 0%, rgba(47, 111, 224, .18), transparent 55%),
    radial-gradient(100% 90% at 0% 100%, rgba(224, 71, 60, .16), transparent 58%),
    var(--zone);
}

.page-about .about-rank__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(25px, 3.4vw, 38px);
  line-height: 1.28;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-about .about-rank__lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--paper);
}

.page-about .about-rank__list {
  margin-top: 22px;
}

.page-about .about-rank__row {
  display: grid;
  gap: 4px;
  padding: 14px 2px;
}

.page-about .about-rank__k {
  font-family: var(--font-score);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--whistle);
}

.page-about .about-rank__v {
  font-size: 15px;
  line-height: 1.7;
  color: var(--index);
}

.page-about .about-rank__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 24px;
}

.page-about .about-rank__foot .btn {
  text-decoration: none;
}

@media (min-width: 640px) {
  .page-about .about-rank__row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 2.4fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 960px) {
  .page-about .about-rank__box {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: 48px;
    padding: 46px 44px;
  }
}

/* ---------- 移动端与合作 ---------- */
.page-about .about-mobile {
  padding: 0 0 60px;
}

.page-about .about-mobile__grid {
  display: grid;
  gap: 28px;
  margin-top: 26px;
}

.page-about .about-mobile__text p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--paper);
}

.page-about .about-mobile__list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-mobile__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15.5px;
  line-height: 1.72;
  color: var(--index);
}

.page-about .about-mobile__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange);
}

.page-about .about-mobile__media {
  margin: 0;
}

@media (min-width: 960px) {
  .page-about .about-mobile__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 46px;
    align-items: center;
  }
}

.page-about .about-coop {
  margin-top: 44px;
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

.page-about .about-coop__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 21px;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-coop__lede {
  margin: 10px 0 0;
  max-width: 68ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--index);
}

.page-about .coop-grid {
  list-style: none;
  margin: 24px 0 26px;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-about .coop-grid li {
  padding: 18px 20px;
  border-radius: var(--r-md);
  background: var(--zone);
  border-top: 3px solid var(--line-strong);
  transition: transform .28s ease, background-color .28s ease;
}

.page-about .coop-grid li:nth-child(1) {
  border-top-color: var(--orange);
}

.page-about .coop-grid li:nth-child(2) {
  border-top-color: var(--grass);
}

.page-about .coop-grid li:nth-child(3) {
  border-top-color: var(--whistle);
}

.page-about .coop-grid li:nth-child(4) {
  border-top-color: var(--up);
}

.page-about .coop-grid li:hover {
  transform: translateY(-3px);
  background: var(--zone-soft);
}

.page-about .coop-grid__name {
  margin: 0;
  font-size: 16px;
  font-weight: 500;
  color: var(--paper);
}

.page-about .coop-grid__note {
  margin: 6px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--index);
}

.page-about .about-coop .btn {
  text-decoration: none;
}

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

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

/* ---------- 服务窗口 ---------- */
.page-about .about-service {
  padding: 48px 0 72px;
  background: var(--ink-base);
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  margin: 0 12px;
}

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

.page-about .about-service__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(25px, 3.4vw, 38px);
  line-height: 1.28;
  letter-spacing: -.01em;
  color: var(--paper);
}

.page-about .about-service__main > p {
  margin: 0;
  max-width: 74ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--paper);
}

.page-about .about-service__cards {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

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

.page-about .about-service__contact li {
  display: grid;
  gap: 3px;
  padding: 13px 0;
  border-top: 1px solid var(--line);
}

.page-about .about-service__label {
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--index);
}

.page-about .about-service__value {
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: break-word;
  word-break: break-word;
}

.page-about .about-service__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.page-about .about-service__links .btn {
  text-decoration: none;
}

@media (min-width: 640px) {
  .page-about .about-service__cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-service__contact li {
    grid-template-columns: 116px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
}

@media (min-width: 960px) {
  .page-about .about-service {
    padding: 62px 0 84px;
  }
  .page-about .about-service__inner {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: 48px;
  }
}

/* ---------- 动效兼容 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .year-nav a.pill,
  .page-about .league-tag,
  .page-about .league-tag__note,
  .page-about .coop-grid li {
    transition: none;
  }
  .page-about .year-nav a.pill:hover,
  .page-about .year-nav a.pill:focus-visible,
  .page-about .league-tag:hover,
  .page-about .league-tag:focus-within,
  .page-about .league-tag:focus,
  .page-about .coop-grid li:hover {
    transform: none;
  }
}
<<<END>>>