/* ============================================================
   亚愽体育 · 高塔主张 /values/
   page scope: .page-about
   ============================================================ */

.page-about {
  --about-line: rgba(247, 250, 255, .10);
  --about-line-ink: rgba(15, 23, 37, .10);
  background: var(--navy);
  color: var(--near-white);
}

.page-about img {
  max-width: 100%;
}

/* ---------- 面包屑 ---------- */
.page-about .about-crumbs {
  padding-top: clamp(16px, 3vw, 28px);
  padding-bottom: 6px;
}

.page-about .breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--steel);
}

.page-about .breadcrumbs a {
  color: var(--steel);
  text-decoration: none;
  transition: color .22s var(--ease);
}

.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-bottom: clamp(30px, 5vw, 58px);
}

.page-about .about-hero__frame {
  position: relative;
  display: grid;
  align-items: end;
  min-height: 400px;
  overflow: hidden;
  border-radius: 0 0 var(--r-lg) var(--r-lg);
  background: var(--cobalt);
}

.page-about .about-hero__frame img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
}

.page-about .about-hero__veil {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(10, 23, 48, .18) 0%,
    rgba(10, 23, 48, .62) 54%,
    rgba(10, 23, 48, .96) 100%
  );
}

.page-about .about-hero__overlay {
  position: relative;
  padding-top: clamp(120px, 28vw, 210px);
  padding-bottom: clamp(26px, 4.5vw, 44px);
}

.page-about .about-hero__overlay .eyebrow {
  margin: 0 0 10px;
  color: var(--cyan);
}

.page-about .about-hero__title {
  margin: 0;
  max-width: 17ch;
  color: var(--near-white);
  text-wrap: balance;
}

.page-about .about-hero__body {
  display: grid;
  gap: clamp(22px, 4vw, 34px);
  padding-top: clamp(24px, 4vw, 42px);
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 42ch;
  color: rgba(247, 250, 255, .78);
}

.page-about .about-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2px;
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--about-line);
}

.page-about .about-hero__stats li {
  display: grid;
  gap: 6px;
  align-content: start;
  padding: 16px 12px;
  background: var(--cobalt);
}

.page-about .about-hero__stats .stat__value {
  font-family: var(--font-mono);
  font-size: clamp(24px, 4.6vw, 32px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--cyan);
}

.page-about .about-hero__stats .stat__label {
  font-size: 12px;
  line-height: 1.5;
  color: var(--steel);
}

/* ---------- 章节标题组 ---------- */
.page-about .about-head {
  display: grid;
  gap: 16px;
  margin-bottom: clamp(32px, 5vw, 58px);
}

.page-about .about-head__no {
  font-family: var(--font-mono);
  font-size: clamp(54px, 10vw, 104px);
  font-weight: 700;
  line-height: .8;
  letter-spacing: -.05em;
  color: var(--struct);
  transition: color .7s var(--ease);
}

.page-about .about-head__no.is-revealed {
  color: var(--cyan);
}

.page-about .about-head__text .eyebrow {
  margin: 0 0 10px;
  color: var(--cyan);
}

.page-about .about-head__text h2 {
  margin: 0 0 12px;
  color: var(--near-white);
  text-wrap: balance;
}

.page-about .about-head__text h2:last-child {
  margin-bottom: 0;
}

.page-about .about-head__lede {
  margin: 0;
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(247, 250, 255, .68);
}

.page-about .section--light .about-head__no {
  color: rgba(30, 60, 116, .26);
}

.page-about .section--light .about-head__no.is-revealed {
  color: var(--struct);
}

.page-about .section--light .about-head__text .eyebrow {
  color: var(--struct);
}

.page-about .section--light .about-head__text h2 {
  color: var(--ink);
}

.page-about .section--light .about-head__lede {
  color: var(--steel);
}

/* ---------- 01 发展历程 ---------- */
.page-about .about-line {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-line::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 28px;
  bottom: 28px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(
    180deg,
    var(--cyan) 0%,
    var(--struct) 50%,
    rgba(30, 60, 116, .18) 100%
  );
}

.page-about .about-line__item {
  position: relative;
  padding-left: 38px;
}

.page-about .about-line__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 26px;
  width: 16px;
  height: 16px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--navy);
  border: 2px solid var(--struct);
  transition: background .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}

.page-about .about-line__item:has(.about-node[open])::before {
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 0 0 5px rgba(51, 225, 210, .12);
}

.page-about .about-node > summary {
  position: relative;
  display: grid;
  grid-template-columns: auto auto;
  justify-content: start;
  gap: 8px 12px;
  padding: 18px 40px 16px 0;
  cursor: pointer;
  list-style: none;
  border-bottom: 1px solid var(--about-line);
  transition: border-color .3s var(--ease);
}

.page-about .about-node > summary::-webkit-details-marker {
  display: none;
}

.page-about .about-node[open] > summary {
  border-bottom-color: rgba(51, 225, 210, .3);
}

.page-about .about-node > summary::after {
  content: "";
  position: absolute;
  right: 12px;
  top: 24px;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--steel);
  border-bottom: 2px solid var(--steel);
  transform: rotate(45deg);
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}

.page-about .about-node[open] > summary::after {
  transform: rotate(-135deg);
  border-color: var(--cyan);
}

.page-about .about-node__year {
  align-self: center;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-about .about-node__tag {
  justify-self: start;
  align-self: center;
  padding: 3px 10px;
  border-radius: var(--r-pill);
  background: var(--struct);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--near-white);
}

.page-about .about-node__name {
  grid-column: 1 / -1;
  font-family: var(--font-display);
  font-size: clamp(18px, 3.2vw, 23px);
  font-weight: 700;
  line-height: 1.32;
  letter-spacing: -.01em;
  color: var(--near-white);
}

.page-about .about-node__panel {
  max-width: 62ch;
  padding: 2px 26px 22px 0;
}

.page-about .about-node__panel p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(247, 250, 255, .7);
}

/* ---------- 02 编辑团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
}

.page-about .about-roles {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-roles__item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 20px 16px 20px 10px;
  border-top: 1px solid var(--about-line-ink);
  border-radius: var(--r-sm);
  transition: background .28s var(--ease);
}

.page-about .about-roles__item:last-child {
  border-bottom: 1px solid var(--about-line-ink);
}

.page-about .about-roles__item:hover {
  background: rgba(30, 60, 116, .05);
}

.page-about .about-roles__idx {
  grid-column: 1;
  grid-row: 1 / span 2;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--struct);
}

.page-about .about-roles__item h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-about .about-roles__item p {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

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

.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-radius: var(--r-lg);
  background: var(--cobalt);
}

.page-about .about-team__media figcaption {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- 03 采集到发布 ---------- */
.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-steps__item {
  display: grid;
  gap: 8px;
  align-content: start;
  padding: 22px 18px 24px;
  border-radius: var(--r-md);
  background: rgba(10, 23, 48, .38);
  border: 1px solid rgba(247, 250, 255, .08);
  transition: transform .28s var(--ease), background .28s var(--ease), border-color .28s var(--ease);
}

.page-about .about-steps__item:hover {
  transform: translateY(-4px);
  background: rgba(10, 23, 48, .58);
  border-color: rgba(51, 225, 210, .3);
}

.page-about .about-steps__idx {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--cyan);
}

.page-about .about-steps__item h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.28;
  color: var(--near-white);
}

.page-about .about-steps__item p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(247, 250, 255, .66);
}

/* ---------- 04 更新节奏 ---------- */
.page-about .about-tempo__grid {
  display: grid;
  gap: 16px;
}

.page-about .about-tempo__card {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: 26px 22px 28px;
  border-radius: var(--r-lg);
  background: #FFFFFF;
  border: 1px solid var(--about-line-ink);
  box-shadow: var(--shadow);
  transition: transform .28s var(--ease);
}

.page-about .about-tempo__card:hover,
.page-about .about-tempo__card:focus-visible {
  transform: translateY(-6px);
}

.page-about .about-tempo__freq {
  justify-self: start;
  margin: 0;
  padding: 4px 11px;
  border-radius: var(--r-pill);
  background: var(--signal-soft);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .05em;
  color: var(--signal);
  opacity: .58;
  transition: opacity .28s var(--ease);
}

.page-about .about-tempo__card:hover .about-tempo__freq,
.page-about .about-tempo__card:focus-visible .about-tempo__freq,
.page-about .about-tempo__card:focus-within .about-tempo__freq {
  opacity: 1;
}

.page-about .about-tempo__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 4vw, 28px);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-about .about-tempo__desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--steel);
}

/* ---------- 05 内容协作 ---------- */
.page-about .about-partners__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .about-partners__media {
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--cobalt);
}

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

.page-about .about-partners__text > p {
  margin: 0 0 20px;
  max-width: 42ch;
  font-size: 15px;
  line-height: 1.82;
  color: rgba(247, 250, 255, .74);
}

.page-about .about-partners__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 13px;
}

.page-about .about-partners__list li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(247, 250, 255, .82);
}

.page-about .about-partners__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
}

/* ---------- 06 接下来 ---------- */
.page-about .about-next__grid {
  display: grid;
  gap: 16px;
}

.page-about .about-next__card {
  display: grid;
  gap: 10px;
  align-content: start;
  padding: 26px 24px 28px;
  border-radius: var(--r-lg);
  background: #FFFFFF;
  border: 1px solid var(--about-line-ink);
  transition: transform .28s var(--ease), border-color .28s var(--ease);
}

.page-about .about-next__card:hover {
  transform: translateY(-4px);
  border-color: rgba(51, 225, 210, .45);
}

.page-about .about-next__tag {
  justify-self: start;
  padding: 4px 11px;
  border-radius: var(--r-pill);
  background: rgba(30, 60, 116, .08);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--struct);
}

.page-about .about-next__card h3 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-about .about-next__card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--steel);
}

/* ---------- 结尾行动 ---------- */
.page-about .about-cta__inner {
  display: grid;
  gap: 26px;
}

.page-about .about-cta__inner .eyebrow {
  margin: 0 0 10px;
  color: var(--cyan);
}

.page-about .about-cta__inner h2 {
  margin: 0;
  max-width: 22ch;
  color: var(--near-white);
  text-wrap: balance;
}

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

/* ============================================================
   断点
   ============================================================ */

@media (min-width: 560px) {
  .page-about .about-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .about-node > summary {
    grid-template-columns: 74px 104px minmax(0, 1fr);
    align-items: center;
    gap: 20px;
    padding: 22px 40px 20px 0;
  }

  .page-about .about-node__name {
    grid-column: auto;
  }

  .page-about .about-node > summary::after {
    top: 50%;
    margin-top: -8px;
  }

  .page-about .about-next__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 820px) {
  .page-about .about-tempo__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 880px) {
  .page-about .about-head {
    grid-template-columns: minmax(0, 132px) minmax(0, 1fr);
    gap: clamp(26px, 4vw, 48px);
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__frame {
    min-height: 560px;
  }

  .page-about .about-hero__body {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    gap: clamp(34px, 5vw, 64px);
    align-items: center;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: start;
  }

  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
    align-items: center;
  }

  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 48px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-steps {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 14px;
    align-items: start;
  }

  .page-about .about-steps__item:nth-child(2) {
    margin-top: 26px;
  }

  .page-about .about-steps__item:nth-child(3) {
    margin-top: 52px;
  }

  .page-about .about-steps__item:nth-child(4) {
    margin-top: 78px;
  }

  .page-about .about-steps__item:nth-child(5) {
    margin-top: 104px;
  }
}

@media (max-width: 520px) {
  .page-about .about-hero__stats {
    grid-template-columns: 1fr;
  }

  .page-about .about-hero__stats li {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: baseline;
    gap: 12px;
    padding: 14px 16px;
  }

  .page-about .about-hero__stats .stat__label {
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-steps__item,
  .page-about .about-tempo__card,
  .page-about .about-next__card,
  .page-about .about-head__no,
  .page-about .about-tempo__freq {
    transition: none;
  }

  .page-about .about-steps__item:hover,
  .page-about .about-tempo__card:hover,
  .page-about .about-next__card:hover {
    transform: none;
  }
}