.page-about {
  --about-text: rgba(245, 248, 250, .78);
  --about-text-dim: rgba(245, 248, 250, .58);
  position: relative;
  padding-bottom: clamp(40px, 7vw, 80px);
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  padding-top: clamp(14px, 3vw, 24px);
}
.page-about .crumbs__sep {
  margin: 0 8px;
  color: var(--steel);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding-top: clamp(26px, 5vw, 52px);
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -16%;
  right: -26%;
  width: 82%;
  height: 132%;
  background:
    linear-gradient(155deg, rgba(52, 231, 214, .16) 0%, rgba(52, 231, 214, 0) 60%),
    var(--panel);
  border-left: 2px solid var(--rule-strong);
  border-bottom: 2px solid var(--rule-strong);
  transform: skewX(-14deg);
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: .5;
  pointer-events: none;
  background-image: repeating-linear-gradient(0deg, rgba(245, 248, 250, .05) 0 1px, transparent 1px 5px);
}
.page-about .about-hero__inner {
  position: relative;
  max-width: 780px;
}
.page-about .about-hero__title {
  margin: 12px 0 0;
  font-size: clamp(32px, 7.2vw, 72px);
  line-height: 1.06;
  letter-spacing: -.02em;
  font-weight: 900;
  color: var(--paper);
}
.page-about .about-hero__lede {
  margin: 20px 0 0;
  max-width: 620px;
  color: var(--about-text);
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

/* ---------- 关键数字条 ---------- */
.page-about .about-stats {
  list-style: none;
  margin: clamp(30px, 5vw, 54px) 0 0;
  padding: 2px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  background: var(--rule);
  border: 2px solid var(--rule-strong);
}
.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 16px 18px;
  background: var(--navy-deep);
}
.page-about .about-stat__num {
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 700;
  color: var(--teal-soft);
  line-height: 1;
}
.page-about .about-stat__label {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--steel);
}
@media (min-width: 720px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 章节跳转条 ---------- */
.page-about .about-jump {
  margin-top: clamp(24px, 4vw, 40px);
  border-top: 2px solid var(--rule);
  border-bottom: 2px solid var(--rule);
  background: var(--navy-deep);
}
.page-about .about-jump__list {
  list-style: none;
  margin: 0;
  padding: 12px 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}
.page-about .about-jump__link {
  flex: 0 0 auto;
  scroll-snap-align: start;
  display: inline-block;
  padding: 8px 14px;
  border: 2px solid var(--rule-strong);
  color: var(--paper);
  text-decoration: none;
  font-size: 14px;
  letter-spacing: .04em;
  transition: border-color .25s var(--ease), color .25s var(--ease);
}
.page-about .about-jump__link:hover,
.page-about .about-jump__link:focus-visible {
  border-color: var(--teal);
  color: var(--teal);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-era {
  padding: clamp(40px, 6.5vw, 84px) 0;
  border-bottom: 2px solid var(--rule);
  scroll-margin-top: calc(var(--top-h) + 16px);
}
.page-about .about-era--last {
  border-bottom: none;
}
.page-about .about-era__grid {
  display: grid;
  gap: 16px 40px;
}
@media (min-width: 960px) {
  .page-about .about-era__grid {
    grid-template-columns: 76px minmax(0, 1fr);
    gap: 6px 46px;
  }
}
.page-about .about-mark {
  margin: 0;
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.2vw, 24px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .06em;
  color: var(--amber);
  border-left: 2px solid currentColor;
  padding-left: 12px;
}
.page-about .about-mark--cur {
  color: var(--teal);
}
@media (min-width: 960px) {
  .page-about .about-mark {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
  }
}
.page-about .about-era__body > h2 {
  margin: 8px 0 0;
  font-size: clamp(24px, 4vw, 40px);
  line-height: 1.2;
  letter-spacing: -.01em;
  font-weight: 900;
  color: var(--paper);
}
.page-about .about-era__lede {
  margin: 14px 0 0;
  max-width: 640px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--about-text);
}

/* ---------- 图文与引文 ---------- */
.page-about .about-cols {
  display: grid;
  gap: 24px;
  margin-top: 24px;
}
@media (min-width: 880px) {
  .page-about .about-cols {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 40px;
    align-items: start;
  }
}
.page-about .about-figure {
  margin: 0;
}
.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 2px solid var(--rule-strong);
  box-shadow: var(--shadow-hard);
  object-fit: cover;
}
.page-about .about-figure--origin img {
  filter: sepia(.3) contrast(1.05) saturate(.78);
}
.page-about .about-figure--tall img {
  aspect-ratio: 3 / 4;
}
.page-about .about-era__prose p {
  margin: 0 0 16px;
}
.page-about .about-era__prose p:last-child {
  margin-bottom: 0;
}
.page-about .about-quote {
  margin: 28px 0 0;
  padding: 22px 24px;
  background: var(--sand);
  color: var(--navy-deep);
  border: 2px solid var(--navy-deep);
  box-shadow: var(--shadow-hard);
}
.page-about .about-quote p {
  margin: 0;
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 700;
  line-height: 1.55;
}
.page-about .about-quote cite {
  display: block;
  margin-top: 12px;
  font-style: normal;
  font-size: 12px;
  letter-spacing: .18em;
  color: rgba(6, 16, 28, .62);
}

/* ---------- 版本时间轴 ---------- */
.page-about .about-versions {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}
.page-about .about-ver {
  position: relative;
  padding: 0 0 30px 28px;
  border-left: 2px solid var(--rule);
}
.page-about .about-ver:last-child {
  padding-bottom: 0;
}
.page-about .about-ver::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 6px;
  width: 14px;
  height: 14px;
  background: var(--navy);
  border: 2px solid var(--amber);
}
.page-about .about-ver:last-child::before {
  background: var(--teal);
  border-color: var(--teal);
  box-shadow: 0 0 0 4px rgba(52, 231, 214, .18);
}
.page-about .about-ver__tag {
  display: inline-block;
  margin: 0 0 10px;
  padding: 3px 10px;
  border: 2px solid rgba(217, 179, 108, .48);
  color: var(--amber);
  font-size: 13px;
  letter-spacing: .16em;
}
.page-about .about-ver:last-child .about-ver__tag {
  border-color: rgba(52, 231, 214, .55);
  color: var(--teal);
}
.page-about .about-ver h3 {
  margin: 0 0 8px;
  font-size: clamp(17px, 2.2vw, 22px);
  line-height: 1.4;
  font-weight: 800;
  color: var(--paper);
}
.page-about .about-ver p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-text);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: 28px;
  margin-top: 26px;
}
@media (min-width: 880px) {
  .page-about .about-team {
    grid-template-columns: minmax(0, 1fr) minmax(0, .68fr);
    gap: 40px;
    align-items: start;
  }
}
.page-about .about-roles {
  list-style: none;
  margin: 0;
  padding: 2px;
  display: grid;
  gap: 2px;
  background: var(--rule);
  border: 2px solid var(--rule-strong);
}
.page-about .about-roles > li {
  padding: 16px 18px;
  background: var(--navy-deep);
}
.page-about .about-roles h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: .02em;
  color: var(--teal);
}
.page-about .about-roles p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--about-text);
}

/* ---------- 频道与栏目 ---------- */
.page-about .about-channels {
  display: grid;
  gap: 26px;
  margin-top: 26px;
}
@media (min-width: 880px) {
  .page-about .about-channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 34px;
  }
}
.page-about .about-channels h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 800;
  color: var(--paper);
  border-bottom: 2px solid var(--rule-strong);
  padding-bottom: 8px;
}
.page-about .about-channels p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-text);
}
.page-about .about-sports {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-about .about-sports li {
  padding: 5px 12px;
  border: 2px solid var(--rule-strong);
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--paper);
}
.page-about .about-columns {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 13px;
}
.page-about .about-columns li {
  padding-left: 14px;
  border-left: 2px solid var(--rule-strong);
  font-size: 15px;
  line-height: 1.72;
  color: var(--about-text);
}
.page-about .about-columns strong {
  color: var(--paper);
  font-weight: 700;
}
.page-about .about-channels__more {
  margin-top: 18px;
}
.page-about .about-textlink {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 2px solid rgba(52, 231, 214, .45);
  padding-bottom: 2px;
  font-size: 15px;
  transition: border-color .25s var(--ease), color .25s var(--ease);
}
.page-about .about-textlink:hover,
.page-about .about-textlink:focus-visible {
  color: var(--teal-soft);
  border-color: var(--teal-soft);
}

/* ---------- 本地观赛 ---------- */
.page-about .about-city {
  display: grid;
  gap: 26px;
  margin-top: 22px;
}
@media (min-width: 880px) {
  .page-about .about-city {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .8fr);
    gap: 40px;
    align-items: start;
  }
}
.page-about .about-city .prose p {
  margin: 0 0 16px;
}
.page-about .about-city .prose p:last-child {
  margin-bottom: 0;
}
.page-about .about-city-stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  background: var(--rule);
  border: 2px solid var(--rule-strong);
  align-content: start;
}
.page-about .about-city-stats li {
  background: var(--navy-deep);
  padding: 14px 16px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
}
.page-about .about-city-stats .num {
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  color: var(--orange);
  line-height: 1;
}
.page-about .about-city-stats em {
  font-style: normal;
  font-size: 13px;
  line-height: 1.6;
  color: var(--about-text-dim);
}
.page-about .about-city-figure {
  margin: clamp(26px, 4vw, 44px) 0 0;
}
.page-about .about-city-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 2px solid var(--rule-strong);
  box-shadow: var(--shadow-soft);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  position: relative;
  overflow: hidden;
  margin-top: clamp(36px, 6vw, 68px);
  border-top: 2px solid var(--teal);
  border-bottom: 2px solid var(--rule-strong);
  background: var(--panel);
}
.page-about .about-cta::after {
  content: "";
  position: absolute;
  top: -30%;
  right: -50px;
  width: 180px;
  height: 170%;
  pointer-events: none;
  background: repeating-linear-gradient(90deg, rgba(255, 106, 43, .16) 0 6px, transparent 6px 17px);
  transform: skewX(-16deg);
}
.page-about .about-cta__inner {
  position: relative;
  z-index: 1;
  padding-top: clamp(28px, 4.5vw, 52px);
  padding-bottom: clamp(28px, 4.5vw, 52px);
  display: grid;
  gap: 22px;
}
.page-about .about-cta__inner h2 {
  margin: 0;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.24;
  font-weight: 900;
  color: var(--paper);
}
.page-about .about-cta__inner p {
  margin: 12px 0 0;
  max-width: 560px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--about-text);
}
.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
@media (min-width: 860px) {
  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 40px;
  }
  .page-about .about-cta__actions {
    justify-content: flex-end;
  }
}