.page-about {
  --about-rail: 132px;
  --about-rule: var(--line-soft);
  position: relative;
  color: var(--white);
  background: var(--bg);
  padding-bottom: clamp(40px, 7vw, 88px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  padding: clamp(24px, 5vw, 48px) 0 clamp(36px, 6vw, 64px);
}

.page-about .about-hero__title {
  margin: 14px 0 20px;
  font-size: clamp(30px, 5.4vw, 58px);
  line-height: 1.12;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 56ch;
  font-size: clamp(15px, 1.65vw, 18px);
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-hero__side-label {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--dim);
}

.page-about .about-audience {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--about-rule);
}

.page-about .about-audience li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 13px 0;
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-audience .num {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-about .about-audience p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-sec {
  padding: clamp(36px, 6vw, 72px) 0;
  border-top: 1px solid var(--about-rule);
}

.page-about .about-sec__title {
  margin: 0 0 14px;
  font-size: clamp(23px, 3.6vw, 38px);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-about .about-sec__lead {
  margin: 0 0 clamp(22px, 3vw, 32px);
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-text p {
  margin: 0 0 16px;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

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

.page-about .about-text strong {
  color: var(--white);
  font-weight: 600;
}

.page-about .about-text strong.num {
  font-family: var(--font-num);
  color: var(--cyan);
  letter-spacing: 0.02em;
}

.page-about .about-split {
  display: grid;
  gap: clamp(22px, 4vw, 44px);
}

/* ---------- 数据注脚 ---------- */
.page-about .about-side {
  border-left: 1px solid var(--about-rule);
  padding-left: clamp(14px, 2.4vw, 22px);
}

.page-about .about-side__label {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--dim);
}

.page-about .about-side__list {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-side__list dt {
  margin: 0 0 3px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}

.page-about .about-side__list dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--cyan-soft);
  text-align: right;
}

.page-about .about-side__list dd .num {
  font-family: var(--font-num);
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-about .about-side__more {
  margin: 18px 0 0;
  font-size: 13px;
  text-align: right;
}

.page-about .about-side__more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
}

.page-about .about-side__more a:hover {
  color: var(--cyan-soft);
  border-bottom-color: var(--cyan);
}

.page-about .about-note {
  margin: 22px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .about-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.page-about .about-note a:hover {
  color: var(--cyan-soft);
  border-bottom-color: var(--cyan);
}

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

.page-about .about-fig--banner {
  margin: 0 0 clamp(26px, 4vw, 44px);
}

.page-about .about-fig .media__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-about .about-fig .media__caption {
  margin: 10px 0 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--dim);
}

/* ---------- 规模数据 ---------- */
.page-about .about-stats {
  display: grid;
  gap: 1px;
  margin: 0 0 clamp(20px, 4vw, 32px);
  background: var(--about-rule);
  border: 1px solid var(--about-rule);
}

.page-about .about-stat {
  background: var(--bg-2);
  padding: clamp(18px, 3vw, 26px);
}

.page-about .about-stat__num {
  font-family: var(--font-num);
  font-size: clamp(30px, 5.2vw, 46px);
  line-height: 1;
  letter-spacing: 0.01em;
  color: var(--cyan);
}

.page-about .about-stat__unit {
  margin-left: 6px;
  font-size: 13px;
  color: var(--muted);
}

.page-about .about-stat__label {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 联赛覆盖矩阵 ---------- */
.page-about .about-matrix {
  margin: clamp(20px, 4vw, 36px) 0;
  padding: clamp(30px, 5vw, 60px) 0;
  background: var(--bg-2);
  border-top: 1px solid var(--about-rule);
  border-bottom: 1px solid var(--about-rule);
}

.page-about .about-matrix__inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.page-about .about-matrix__title {
  margin: 12px 0 10px;
  font-size: clamp(21px, 3.2vw, 33px);
  line-height: 1.25;
  font-weight: 800;
  color: var(--white);
}

.page-about .about-matrix__lead {
  margin: 0;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-matrix__svg {
  display: block;
  width: 100%;
  height: auto;
  margin-top: clamp(20px, 4vw, 34px);
  overflow: visible;
}

.page-about .about-matrix__label {
  fill: var(--muted);
  font-family: var(--font-sans);
  font-size: 13px;
}

.page-about .about-matrix__row {
  transition: opacity 0.2s ease;
}

.page-about .about-matrix__row circle {
  opacity: 0.9;
  transition: opacity 0.2s ease;
}

.page-about .about-matrix__row:hover circle {
  opacity: 1;
}

.page-about .about-dot--football {
  fill: var(--cyan);
}

.page-about .about-dot--basket {
  fill: var(--cyan-soft);
  opacity: 0.85;
}

.page-about .about-dot--other {
  fill: var(--orange);
}

/* ---------- 时间线 ---------- */
.page-about .about-tl {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-tl__item {
  position: relative;
}

.page-about .about-tl__year {
  margin: 0 0 8px;
  padding-left: 22px;
  font-family: var(--font-num);
  font-size: clamp(22px, 3.2vw, 30px);
  line-height: 1;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-about .about-tl__body {
  position: relative;
  padding: 0 0 34px 22px;
  border-left: 1px solid var(--about-rule);
}

.page-about .about-tl__body::before {
  content: "";
  position: absolute;
  left: -4px;
  top: 5px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--bg);
  border: 1px solid var(--cyan);
}

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

.page-about .about-tl__h {
  margin: 0 0 8px;
  font-size: clamp(17px, 2.1vw, 21px);
  line-height: 1.35;
  font-weight: 700;
  color: var(--white);
}

.page-about .about-tl__body p {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  margin-top: clamp(28px, 5vw, 56px);
  padding: clamp(26px, 4vw, 48px) clamp(18px, 3vw, 36px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
}

.page-about .about-cta__title {
  margin: 0 0 12px;
  font-size: clamp(20px, 3vw, 30px);
  line-height: 1.3;
  font-weight: 800;
  color: var(--white);
}

.page-about .about-cta__lead {
  margin: 0 0 22px;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-about .about-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .about-split {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
    gap: clamp(28px, 4.5vw, 60px);
    align-items: start;
  }

  .page-about .about-split--media {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.45fr);
  }

  .page-about .about-side {
    position: sticky;
    top: 96px;
  }

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

@media (min-width: 960px) {
  .page-about .about-tl__item {
    display: grid;
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    column-gap: 0;
  }

  .page-about .about-tl__year {
    grid-column: 1;
    align-self: start;
    position: sticky;
    top: 96px;
    margin: 0;
    padding: 0 26px 0 0;
    text-align: right;
  }

  .page-about .about-tl__body {
    grid-column: 2;
    padding: 0 0 52px 30px;
  }

  .page-about .about-tl__body::before {
    top: 6px;
    left: -4.5px;
    width: 8px;
    height: 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-matrix__row,
  .page-about .about-matrix__row circle {
    transition: none;
  }
}