.page-about {
  --about-pad: 64px;
  --about-accent-line: rgba(34, 211, 238, 0.32);
}

.page-about .breadcrumb {
  padding: 22px 0 4px;
  font-size: 12.5px;
  color: var(--text-dim);
  letter-spacing: 0.02em;
}

.page-about .breadcrumb a {
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-about .breadcrumb a:hover {
  color: var(--cyan);
  border-bottom-color: var(--about-accent-line);
}

/* ---------- 首屏：杂志内页式编排 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 18px 0 56px;
  border-bottom: 1px solid var(--line-1);
  background: radial-gradient(880px 320px at 84% -14%, rgba(34, 211, 238, 0.10), transparent 72%);
}

.page-about .about-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

.page-about .about-rail__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.page-about .year-rail {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-about .year-rail__item {
  margin: 0;
}

.page-about .year-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--line-1);
  color: var(--text-dim);
  font-size: 12px;
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease, transform 0.18s ease;
}

.page-about .year-rail__link .num {
  font-size: 12px;
  color: var(--cyan);
}

.page-about .year-rail__link:hover {
  color: var(--cream);
  border-color: var(--about-accent-line);
  transform: translateY(-2px);
}

.page-about .about-hero__body h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(29px, 6.4vw, 54px);
  line-height: 1.05;
  letter-spacing: 0.005em;
  color: var(--cream);
  max-width: 19ch;
}

.page-about .about-hero__rule {
  width: 76px;
  height: 2px;
  margin: 22px 0 0;
  background: var(--cyan);
}

.page-about .about-hero__body .lede {
  margin: 20px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  margin-top: 34px;
  border-top: 1px solid var(--line-1);
}

.page-about .about-fact {
  flex: 1 1 148px;
  padding: 18px 16px 6px 0;
}

.page-about .about-fact + .about-fact {
  border-left: 1px solid var(--line-1);
  padding-left: 18px;
}

.page-about .about-fact__num {
  display: block;
  font-size: 30px;
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-fact__label {
  display: block;
  margin-top: 9px;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--text-dim);
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: 198px minmax(0, 1fr);
    gap: 52px;
    padding-top: 12px;
  }

  .page-about .year-rail {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
  }

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

  .page-about .year-rail__link {
    display: flex;
    width: 100%;
    padding: 10px 0;
    border: 0;
    font-size: 13px;
  }

  .page-about .year-rail__link:hover {
    transform: translateX(5px);
  }
}

/* ---------- 章节节奏 ---------- */
.page-about .section {
  padding: var(--about-pad) 0;
}

.page-about .section--tint {
  background: var(--ink-900);
  border-top: 1px solid var(--line-1);
  border-bottom: 1px solid var(--line-1);
}

.page-about .section-head .lede {
  max-width: 34em;
  color: var(--text);
}

.page-about .col-aside .annotation {
  display: block;
  padding-top: 46px;
  font-size: 12px;
  line-height: 1.85;
  letter-spacing: 0.03em;
  color: var(--text-faint);
  border-top: 1px solid var(--line-1);
}

/* ---------- 观赛处境 ---------- */
.page-about .who-list {
  margin-top: 30px;
  border-top: 1px solid var(--line-1);
}

.page-about .who-item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 14px;
  padding: 22px 4px;
  border-bottom: 1px solid var(--line-1);
  transition: background-color 0.2s ease, padding-left 0.2s ease;
}

.page-about .who-item:hover {
  background: rgba(34, 211, 238, 0.045);
  padding-left: 12px;
}

.page-about .who-item__num {
  padding-top: 4px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .who-item__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 21px;
  line-height: 1.25;
  color: var(--cream);
}

.page-about .who-item__text {
  grid-column: 2;
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text);
}

/* ---------- 发展历程 ---------- */
.page-about .history-layout {
  display: grid;
  gap: 30px;
  margin-top: 36px;
}

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

.page-about .history-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.page-about .history-media .media__caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--text-faint);
}

.page-about .history-track {
  min-width: 0;
}

.page-about .timeline {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  padding-bottom: 16px;
  -webkit-overflow-scrolling: touch;
}

.page-about .timeline:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-about .timeline__item {
  position: relative;
  flex: 0 0 208px;
  scroll-snap-align: start;
  padding: 26px 20px 10px 0;
  border-top: 1px solid var(--line-2);
  transition: border-color 0.2s ease;
}

.page-about .timeline__item:hover {
  border-top-color: var(--about-accent-line);
}

.page-about .timeline__node {
  position: absolute;
  top: -4px;
  left: 0;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.14);
}

.page-about .timeline__time {
  margin: 0 0 9px;
  font-size: 12.5px;
  letter-spacing: 0.12em;
  color: var(--text-faint);
}

.page-about .timeline__title {
  margin: 0 0 9px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.3;
  color: var(--cream);
  transition: color 0.18s ease;
}

.page-about .timeline__item:hover .timeline__title {
  color: var(--cyan);
}

.page-about .timeline__desc {
  margin: 0;
  font-size: 13.8px;
  line-height: 1.72;
  color: var(--text-dim);
}

@media (min-width: 1024px) {
  .page-about .history-layout {
    grid-template-columns: 300px minmax(0, 1fr);
    gap: 46px;
    align-items: start;
  }
}

/* ---------- 团队分工 ---------- */
.page-about .team-acc {
  margin-top: 28px;
  border-top: 1px solid var(--line-1);
}

.page-about .team-acc .acc {
  border-bottom: 1px solid var(--line-1);
}

.page-about .team-acc .acc__head {
  padding: 18px 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.35;
  color: var(--cream);
  cursor: pointer;
  transition: color 0.18s ease;
}

.page-about .team-acc .acc__head:hover {
  color: var(--cyan);
}

.page-about .team-acc .acc__body {
  padding: 0 0 22px;
}

.page-about .team-acc .acc__body p {
  margin: 0;
  max-width: 34em;
  font-size: 14.8px;
  line-height: 1.8;
  color: var(--text);
}

/* ---------- 标签与数据校验 ---------- */
.page-about .rules-layout {
  display: grid;
  gap: 32px;
  margin-top: 34px;
}

.page-about .rules-body h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 22px;
  line-height: 1.3;
  color: var(--cream);
}

.page-about .rules-body h3:not(:first-child) {
  margin-top: 36px;
}

.page-about .rules-body p {
  margin: 0 0 16px;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.82;
  color: var(--text);
}

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

.page-about .check-list li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-1);
  font-size: 14.6px;
  line-height: 1.78;
  color: var(--text);
}

.page-about .check-list li .num {
  padding-top: 4px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-about .check-list li strong {
  color: var(--cream);
  font-weight: 600;
}

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

.page-about .rules-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .rules-media .media__caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--text-faint);
}

@media (min-width: 1024px) {
  .page-about .rules-layout {
    grid-template-columns: minmax(0, 1fr) 372px;
    gap: 50px;
    align-items: start;
  }
}

/* ---------- 规模与覆盖 ---------- */
.page-about .scale-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: 32px;
  background: var(--line-1);
  border: 1px solid var(--line-1);
}

.page-about .scale-cell {
  padding: 26px 22px 24px;
  background: var(--ink-900);
  transition: background-color 0.2s ease;
}

.page-about .scale-cell:hover {
  background: var(--ink-800);
}

.page-about .scale-num {
  display: block;
  font-size: clamp(26px, 5vw, 34px);
  line-height: 1;
  color: var(--cream);
}

.page-about .scale-unit {
  margin-left: 3px;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--text-dim);
}

.page-about .scale-label {
  display: block;
  margin-top: 13px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-about .scale-note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-dim);
}

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

@media (min-width: 1060px) {
  .page-about .scale-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 主客场指标 ---------- */
.page-about .metric-switch {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 20px;
}

.page-about .metric-switch .tag {
  cursor: pointer;
  font: inherit;
  font-size: 12.5px;
  padding: 6px 14px;
  background: transparent;
  transition: color 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.page-about .metric-switch .tag[aria-pressed="true"] {
  color: var(--ink-950);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-about .metric-table {
  border-top: 1px solid var(--line-2);
}

.page-about .metric-row {
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line-1);
}

.page-about .metric-row--head {
  border-bottom-color: var(--line-2);
}

.page-about .metric-row--head span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-faint);
}

.page-about .metric-name {
  flex: 0 0 30%;
  padding: 14px 10px 14px 0;
  font-size: 14px;
  color: var(--text);
}

.page-about .metric-col {
  flex: 1 1 0;
  min-width: 0;
  padding: 14px 12px;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 15px;
  font-variant-numeric: tabular-nums;
  border-left: 1px solid var(--line-1);
}

.page-about .metric-col--home {
  color: var(--home);
}

.page-about .metric-col--away {
  color: var(--away);
}

.page-about .metric-diff {
  flex: 0 0 19%;
  padding: 14px 0 14px 12px;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 13.5px;
  font-variant-numeric: tabular-nums;
  color: var(--text-dim);
  border-left: 1px solid var(--line-1);
}

.page-about .metric-row--head .metric-col--home {
  color: var(--home);
}

.page-about .metric-row--head .metric-col--away {
  color: var(--away);
}

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

.page-about .metric-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-about .metric-media .media__caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--text-faint);
}

@media (max-width: 640px) {
  .page-about .metric-name {
    flex-basis: 34%;
    font-size: 13px;
    padding-right: 6px;
  }

  .page-about .metric-col {
    font-size: 13px;
    padding: 12px 8px;
  }

  .page-about .metric-diff {
    flex-basis: 17%;
    font-size: 12px;
    padding: 12px 0 12px 8px;
  }
}

/* ---------- 谁在用 ---------- */
.page-about .user-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: 30px;
}

.page-about .user-card {
  padding-top: 18px;
  border-top: 2px solid var(--stone);
}

.page-about .user-card:nth-child(1) {
  border-top-color: var(--cyan);
}

.page-about .user-card:nth-child(2) {
  border-top-color: var(--lime);
}

.page-about .user-card:nth-child(3) {
  border-top-color: var(--moss);
}

.page-about .user-card__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.32;
  color: var(--cream);
}

.page-about .user-card__text {
  margin: 0;
  font-size: 14.6px;
  line-height: 1.8;
  color: var(--text);
}

@media (min-width: 860px) {
  .page-about .user-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 34px;
  }
}

/* ---------- 结尾引导 ---------- */
.page-about .about-cta {
  padding: 54px 0 76px;
  border-top: 1px solid var(--line-1);
  background: linear-gradient(180deg, rgba(18, 34, 52, 0.55), transparent 78%);
}

.page-about .about-cta__inner {
  display: grid;
  gap: 24px;
}

.page-about .about-cta h2 {
  margin: 0 0 14px;
}

.page-about .about-cta .lede {
  margin: 0;
  max-width: 34em;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
}

@media (min-width: 880px) {
  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 46px;
  }

  .page-about .about-cta__actions {
    padding-bottom: 4px;
  }
}

@media (max-width: 899px) {
  .page-about {
    --about-pad: 48px;
  }

  .page-about .col-aside .annotation {
    padding-top: 22px;
  }
}