.page-about {
  --about-rail: 208px;
  --about-gap: clamp(24px, 4vw, 56px);
  --about-body-text: rgba(242, 245, 241, 0.82);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(22px, 3.6vw, 44px) 0 clamp(36px, 6vw, 76px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(92% 74% at 80% 2%, rgba(20, 82, 58, 0.5), transparent 66%),
    linear-gradient(158deg, var(--night-700) 0%, var(--pitch-950) 100%);
  overflow: hidden;
}

.page-about .about-hero::before,
.page-about .about-hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(46, 125, 95, 0.26);
  pointer-events: none;
}

.page-about .about-hero::before {
  right: -10%;
  top: -46%;
  width: 48%;
  aspect-ratio: 1;
}

.page-about .about-hero::after {
  right: 4%;
  top: -20%;
  width: 24%;
  aspect-ratio: 1;
  border-color: rgba(46, 125, 95, 0.16);
}

.page-about .about-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
  margin-top: clamp(20px, 3vw, 36px);
}

.page-about .about-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 6vw, 74px);
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--chalk);
}

.page-about .about-hero__lede {
  margin: 20px 0 0;
  max-width: 54ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist);
}

.page-about .about-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 32px;
  margin: 30px 0 0;
  padding: 20px 0 0;
  list-style: none;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-stat__num {
  font-family: var(--font-num);
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--signal);
}

.page-about .about-stat__label {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  aspect-ratio: 14 / 9;
  border: 1px solid var(--line);
  background: var(--night-700);
  overflow: hidden;
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-hero__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 30px 14px 12px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist);
  background: linear-gradient(180deg, transparent, rgba(5, 11, 26, 0.9));
}

/* ---------- 主体骨架 ---------- */
.page-about .about-body {
  padding: clamp(34px, 5vw, 72px) 0 clamp(48px, 7vw, 104px);
}

.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-about .about-rail {
  border: 1px solid var(--line);
  background: rgba(12, 27, 51, 0.62);
  padding: 14px;
}

.page-about .about-rail__label {
  margin: 0 0 10px;
}

.page-about .about-toc {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.page-about .about-toc::-webkit-scrollbar {
  display: none;
}

.page-about .about-toc .index-bar__link {
  flex: 0 0 auto;
  white-space: nowrap;
  padding: 7px 11px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
  text-decoration: none;
  border: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-about .about-toc .index-bar__link:hover,
.page-about .about-toc .index-bar__link:focus-visible {
  color: var(--signal);
  border-color: rgba(255, 212, 0, 0.4);
}

.page-about .about-toc .index-bar__link[aria-current="true"] {
  color: var(--signal);
  border-color: var(--signal);
  background: rgba(255, 212, 0, 0.08);
}

.page-about .about-col {
  display: flex;
  flex-direction: column;
  gap: clamp(48px, 7vw, 96px);
  min-width: 0;
}

/* ---------- 章节通用 ---------- */
.page-about .about-sec {
  position: relative;
  scroll-margin-top: 88px;
}

.page-about .about-sec--narrow > p,
.page-about .about-sec--narrow > h2,
.page-about .about-sec--narrow > .about-sec__num {
  max-width: 720px;
}

.page-about .about-sec__num {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--turf-400);
}

.page-about .about-sec__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 3.4vw, 40px);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--chalk);
}

.page-about .about-sec > p {
  margin: 14px 0 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--about-body-text);
}

/* ---------- 五步流程 ---------- */
.page-about .about-flow {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-about .about-flow__item {
  border: 1px solid var(--line);
  border-top: 2px solid var(--pitch-600);
  background: rgba(12, 27, 51, 0.55);
  padding: 14px 14px 12px;
}

.page-about .about-flow__item details {
  margin: 0;
}

.page-about .about-flow__item summary {
  cursor: pointer;
  list-style: none;
  outline-offset: 4px;
}

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

.page-about .about-flow__item summary::after {
  content: "展开这一步";
  display: block;
  margin-top: 10px;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--turf-400);
}

.page-about .about-flow__item details[open] summary::after {
  content: "收起";
  color: var(--signal);
}

.page-about .about-flow__idx {
  display: block;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--signal);
}

.page-about .about-flow__name {
  display: block;
  margin-top: 8px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.28;
  color: var(--chalk);
}

.page-about .about-flow__item details p {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 数据把关 ---------- */
.page-about .about-verify {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 36px);
  margin-top: 22px;
  align-items: start;
}

.page-about .about-verify__text p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--about-body-text);
}

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

.page-about .about-verify__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--night-700);
  overflow: hidden;
  aspect-ratio: 3 / 2;
}

.page-about .about-verify__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-verify__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 26px 12px 10px;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
  background: linear-gradient(180deg, transparent, rgba(5, 11, 26, 0.9));
}

/* ---------- 赛季里程碑 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 28px 0 0;
  padding: 0 0 0 20px;
  border-left: 1px solid var(--line);
  display: grid;
  gap: 28px;
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -25px;
  top: 7px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 4px rgba(255, 212, 0, 0.14);
}

.page-about .about-timeline__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
}

.page-about .about-timeline__year {
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--signal);
}

.page-about .about-timeline__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--chalk);
}

.page-about .about-timeline__body p {
  margin: 7px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 团队分工 ---------- */
.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-team__card {
  position: relative;
  padding: 20px 16px 22px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(12, 27, 51, 0.72), rgba(6, 26, 18, 0.72));
}

.page-about .about-team__card::after {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px solid var(--line-soft);
  pointer-events: none;
}

.page-about .about-team__num {
  margin: 0;
  font-family: var(--font-num);
  font-size: clamp(28px, 4vw, 40px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--chalk);
}

.page-about .about-team__unit {
  margin-left: 4px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-about .about-team__role {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--chalk);
}

.page-about .about-team__desc {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 合作与认可 ---------- */
.page-about .about-partners {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 36px);
  margin-top: 24px;
  align-items: center;
}

.page-about .about-partners__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  background: var(--night-700);
  overflow: hidden;
  aspect-ratio: 16 / 9;
}

.page-about .about-partners__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-partners__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 28px 12px 10px;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
  background: linear-gradient(180deg, transparent, rgba(5, 11, 26, 0.9));
}

.page-about .about-partners__text p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--about-body-text);
}

.page-about .about-partners__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line-soft);
  display: grid;
  gap: 8px;
}

.page-about .about-partners__list li {
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.page-about .about-partners__list .num {
  font-family: var(--font-num);
  color: var(--signal);
  margin-right: 4px;
}

/* ---------- 编辑部准则 ---------- */
.page-about .about-principles {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  border-top: 1px solid var(--line-soft);
}

.page-about .about-principles__item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-principles__idx {
  font-family: var(--font-num);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--signal);
  padding-top: 2px;
}

.page-about .about-principles__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--chalk);
}

.page-about .about-principles__item p {
  margin: 7px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 一起做事 ---------- */
.page-about .about-join {
  position: relative;
  padding: clamp(24px, 4vw, 46px);
  border: 1px solid var(--line);
  background:
    radial-gradient(80% 100% at 100% 0%, rgba(20, 82, 58, 0.72), transparent 62%),
    linear-gradient(140deg, var(--night-700), var(--pitch-950));
  overflow: hidden;
}

.page-about .about-join .about-sec__num {
  color: var(--signal);
}

.page-about .about-join__title {
  margin-top: 10px;
}

.page-about .about-join__lede {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--about-body-text);
}

.page-about .about-join__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

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

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

  .page-about .about-timeline__row {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
  }

  .page-about .about-timeline__year {
    padding-top: 3px;
    text-align: left;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, 0.96fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-about .about-verify {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(24px, 3.4vw, 44px);
  }

  .page-about .about-partners {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  }

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

@media (min-width: 1024px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: var(--about-gap);
  }

  .page-about .about-rail {
    position: sticky;
    top: 84px;
    padding: 18px 14px;
  }

  .page-about .about-toc {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
    overflow: visible;
  }

  .page-about .about-toc .index-bar__link {
    white-space: normal;
    padding: 8px 10px;
    border: none;
    border-left: 2px solid transparent;
  }

  .page-about .about-toc .index-bar__link:hover,
  .page-about .about-toc .index-bar__link:focus-visible {
    border-color: rgba(255, 212, 0, 0.42);
  }

  .page-about .about-toc .index-bar__link[aria-current="true"] {
    border-color: var(--signal);
    background: rgba(255, 212, 0, 0.07);
  }
}

@media (min-width: 1180px) {
  .page-about .about-flow {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 8px;
  }

  .page-about .about-team {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-flow__item summary::after,
  .page-about .about-toc .index-bar__link {
    transition: none;
  }
}