/* ===== 关于华体育 · 页面专属样式 ===== */

.page-about {
  --about-rail: 148px;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
}

.page-about .breadcrumb {
  padding-top: 18px;
  padding-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: 20px 0 44px;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  top: 4%;
  right: -4%;
  width: 54%;
  height: 84%;
  background: linear-gradient(132deg, rgba(14, 110, 140, .16), rgba(232, 100, 42, .07) 78%);
  clip-path: polygon(16% 0, 100% 7%, 100% 100%, 0 93%);
  pointer-events: none;
  z-index: 0;
  display: none;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap-m);
  align-items: start;
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 8.4vw, 56px);
  line-height: 1.14;
  letter-spacing: .07em;
  color: var(--deep);
}

.page-about .about-hero__text {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(34, 27, 23, .82);
}

.page-about .about-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 18px var(--gap-m);
  margin: 26px 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .about-hero__fact {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.page-about .about-hero__num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 500;
  line-height: 1;
  letter-spacing: .01em;
  color: var(--lake);
}

.page-about .about-hero__plus {
  color: var(--sun);
  font-size: .7em;
  vertical-align: super;
}

.page-about .about-hero__label {
  font-size: 12px;
  letter-spacing: .05em;
  color: rgba(34, 27, 23, .6);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  z-index: 1;
}

.page-about .about-hero__media::before {
  content: "";
  position: absolute;
  inset: -10px -12px 26px 14px;
  background: linear-gradient(140deg, rgba(14, 110, 140, .22), rgba(232, 100, 42, .1));
  border-radius: var(--radius-l);
  z-index: -1;
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: var(--radius);
  clip-path: polygon(0 5%, 100% 0, 100% 100%, 0 100%);
}

.page-about .about-hero__caption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: rgba(34, 27, 23, .58);
}

/* ---------- 页面骨架 ---------- */

.page-about .about-shell {
  padding-bottom: var(--gap-l);
}

.page-about .about-flow {
  display: flex;
  flex-direction: column;
  gap: var(--gap-l);
  min-width: 0;
}

.page-about .about-index {
  display: none;
}

/* ---------- 章节通用 ---------- */

.page-about .about-chapter {
  min-width: 0;
  scroll-margin-top: calc(var(--header-h) + 26px);
}

.page-about .about-chapter__head {
  max-width: 46ch;
  margin-bottom: var(--gap-m);
}

.page-about .about-chapter__head h2 {
  margin: 10px 0 0;
  color: var(--deep);
}

.page-about .about-chapter__intro {
  margin: 14px 0 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(34, 27, 23, .7);
}

/* ---------- 起点 ---------- */

.page-about .about-cols {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap-m);
}

.page-about .about-prose p {
  margin: 0 0 18px;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(34, 27, 23, .82);
}

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

.page-about .about-note {
  background: var(--sand);
  border-left: 3px solid var(--sage);
  border-radius: var(--radius);
  padding: 22px 22px 20px;
}

.page-about .about-note__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--sage);
}

.page-about .about-note p:last-child {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(34, 27, 23, .78);
}

/* ---------- 三条内容线 ---------- */

.page-about .about-lanes {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap-s);
}

.page-about .about-lane {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--sand);
  border-top: 4px solid var(--lake);
  border-radius: var(--radius);
  padding: 24px 20px 22px;
  min-width: 0;
}

.page-about .about-lane--sun {
  border-top-color: var(--sun);
}

.page-about .about-lane--sage {
  border-top-color: var(--sage);
}

.page-about .about-lane__idx {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: rgba(34, 27, 23, .45);
}

.page-about .about-lane__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 21px;
  letter-spacing: .06em;
  color: var(--deep);
}

.page-about .about-lane__body {
  flex: 1;
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(34, 27, 23, .8);
}

.page-about .about-lane__meta {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--sage);
}

/* ---------- 团队 ---------- */

.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap-s);
}

.page-about .about-team__card {
  min-width: 0;
  background: var(--ice);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 20px 22px;
}

.page-about .about-team__card--lead {
  background: var(--deep);
  border-color: transparent;
}

.page-about .about-team__num {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: 62px;
  line-height: .9;
  letter-spacing: -.02em;
  color: var(--lake);
}

.page-about .about-team__title {
  margin: 14px 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: .06em;
  color: var(--deep);
}

.page-about .about-team__body {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(34, 27, 23, .8);
}

.page-about .about-team__detail {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.75;
  letter-spacing: .02em;
  color: var(--sage);
}

.page-about .about-team__card--lead .about-team__num {
  color: var(--flag-yellow);
}

.page-about .about-team__card--lead .about-team__title {
  color: var(--ice);
}

.page-about .about-team__card--lead .about-team__body {
  color: rgba(245, 239, 226, .82);
}

.page-about .about-team__card--lead .about-team__detail {
  border-top-color: rgba(255, 255, 255, .18);
  color: rgba(245, 239, 226, .58);
}

/* ---------- 更新与核验 ---------- */

.page-about .about-quality {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap-m);
}

.page-about .about-quality__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: .06em;
  color: var(--lake);
}

.page-about .about-quality__title:not(:first-child) {
  margin-top: 30px;
}

.page-about .about-quality__col p {
  margin: 0 0 16px;
  max-width: 34em;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(34, 27, 23, .82);
}

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

.page-about .about-quality__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.page-about .about-quality__caption {
  margin: 14px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--sand);
  font-size: 12.5px;
  line-height: 1.75;
  color: rgba(34, 27, 23, .6);
}

/* ---------- 版本演进 ---------- */

.page-about .about-chapter--timeline .about-chapter__head {
  max-width: 40ch;
}

.page-about .about-timeline__banner {
  margin: 0 0 var(--gap-m);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-timeline__banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 21 / 9;
  object-fit: cover;
  opacity: .92;
}

.page-about .about-timeline__scroll {
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 10px;
}

.page-about .about-timeline {
  display: flex;
  gap: var(--gap-s);
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
}

.page-about .about-timeline__item {
  position: relative;
  flex: 0 0 78vw;
  min-width: 0;
  scroll-snap-align: start;
  background: var(--sand);
  border-radius: var(--radius);
  padding: 20px 18px 22px;
}

.page-about .about-timeline__item::before {
  content: "";
  display: block;
  width: 11px;
  height: 11px;
  margin-bottom: 16px;
  border-radius: 50%;
  background: var(--lake);
}

.page-about .about-timeline__item:nth-child(2)::before {
  background: var(--flag-yellow);
}

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

.page-about .about-timeline__item:nth-child(4)::before {
  background: var(--flag-crimson);
}

.page-about .about-timeline__year {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 25px;
  letter-spacing: .06em;
  color: var(--deep);
}

.page-about .about-timeline__title {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: .05em;
  color: var(--deep);
}

.page-about .about-timeline__item p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(34, 27, 23, .78);
}

/* ---------- 信息合作 ---------- */

.page-about .about-partners__lead {
  margin: 0 0 var(--gap-m);
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(34, 27, 23, .82);
}

.page-about .about-partners__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--gap-s);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-partners__item {
  min-width: 0;
  background: var(--ice);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 20px;
}

.page-about .about-partners__item h3 {
  margin: 14px 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: .05em;
  color: var(--deep);
}

.page-about .about-partners__item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(34, 27, 23, .78);
}

.page-about .about-partners__action {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  margin-top: var(--gap-m);
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.page-about .about-partners__hint {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: rgba(34, 27, 23, .55);
}

/* ---------- 收尾 ---------- */

.page-about .about-closing {
  position: relative;
  overflow: hidden;
  background: var(--deep);
  border-radius: var(--radius-l);
  padding: 36px 22px 34px;
}

.page-about .about-closing::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -80px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, .12);
  box-shadow: 0 0 0 28px rgba(255, 255, 255, .04), 0 0 0 56px rgba(255, 255, 255, .022);
  pointer-events: none;
}

.page-about .about-closing .eyebrow {
  color: var(--flag-yellow);
}

.page-about .about-closing h2 {
  margin: 12px 0 0;
  color: var(--ice);
}

.page-about .about-closing p {
  margin: 16px 0 0;
  max-width: 34em;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(245, 239, 226, .82);
}

.page-about .about-closing__links {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-closing .btn--ghost {
  color: var(--paper);
  border-color: rgba(245, 239, 226, .38);
}

.page-about .about-closing .btn--ghost:hover,
.page-about .about-closing .btn--ghost:focus-visible {
  color: var(--ice);
  border-color: var(--ice);
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-about .about-hero {
    padding: 28px 0 56px;
  }

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

  .page-about .about-team {
    grid-template-columns: 1.15fr .85fr 1fr;
    align-items: start;
  }

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

  .page-about .about-timeline__item {
    flex-basis: 320px;
  }

  .page-about .about-closing {
    padding: 48px 40px 44px;
  }
}

@media (min-width: 880px) {
  .page-about .about-hero::after {
    display: block;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--gap-l);
    align-items: end;
  }

  .page-about .about-cols {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--gap-l);
  }

  .page-about .about-quality {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--gap-l);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .about-shell {
    display: grid;
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    column-gap: var(--gap-m);
    align-items: start;
  }

  .page-about .about-index {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 28px);
    padding-top: 4px;
  }

  .page-about .about-index__title {
    margin: 0 0 14px;
    font-family: var(--font-mono);
    font-size: 10.5px;
    letter-spacing: .2em;
    color: rgba(34, 27, 23, .42);
  }

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

  .page-about .about-index .chapter-link {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-left: -1px;
    padding: 7px 0 7px 12px;
    border-left: 2px solid transparent;
    color: rgba(34, 27, 23, .55);
    font-size: 12.5px;
    line-height: 1.45;
    text-decoration: none;
    transition: color .2s var(--ease), border-color .2s var(--ease);
  }

  .page-about .about-index .chapter-link:hover {
    color: var(--lake);
  }

  .page-about .about-index .chapter-link.is-active {
    color: var(--lake);
    border-left-color: var(--lake);
  }

  .page-about .about-index .chapter-link__idx {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: .06em;
    color: var(--flag-yellow);
  }

  .page-about .about-index .chapter-link.is-active .chapter-link__idx {
    color: var(--sun);
  }

  .page-about .about-timeline__scroll {
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-timeline {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--gap-s);
  }

  .page-about .about-timeline__item {
    flex: none;
  }
}

@media (min-width: 1240px) {
  .page-about .about-hero__title {
    font-size: 58px;
  }

  .page-about .about-team__num {
    font-size: 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-index .chapter-link,
  .page-about .about-timeline__scroll {
    transition: none;
    scroll-behavior: auto;
  }
}