.page-about {
  --about-paper-ink: #33445C;
  --about-paper-title: #0D1B2E;
  --about-spine-w: 200px;
  padding-bottom: 88px;
  color: var(--paper);
}

.page-about .breadcrumb {
  margin: 24px 0 26px;
}

/* ---------- 首屏：无传统 Hero，直接进入主题声明 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 32px 22px 34px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(61, 232, 198, .16), transparent 55%),
    linear-gradient(180deg, var(--ink-2), var(--ink-3));
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -110px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14, 124, 107, .55), transparent 70%);
  pointer-events: none;
}

.page-about .about-hero h1 {
  position: relative;
  margin: 14px 0 18px;
  font-family: var(--font-title);
  font-size: clamp(34px, 7vw, 56px);
  line-height: 1.08;
  letter-spacing: .02em;
  color: var(--paper-2);
}

.page-about .about-hero__lede {
  position: relative;
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--paper);
}

.page-about .about-hero__facts {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero__facts li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(61, 232, 198, .32);
  background: rgba(13, 27, 46, .55);
  font-size: 13px;
  color: var(--paper);
}

.page-about .about-hero__facts .num {
  color: var(--cy);
  font-size: 14px;
}

/* ---------- 书脊式章节索引 ---------- */
.page-about .about-spine {
  margin: 30px 0 4px;
}

.page-about .about-spine__cap {
  margin: 0 0 10px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-about .about-spine__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 20px 6px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-about .about-spine__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  flex: 0 0 auto;
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: var(--ink-2);
  color: var(--paper);
  font-size: 14px;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color .2s var(--ease), background .2s var(--ease), color .2s var(--ease);
}

.page-about .about-spine__list a:hover,
.page-about .about-spine__list a:focus-visible {
  border-color: var(--cy);
  background: rgba(61, 232, 198, .12);
}

.page-about .about-spine__idx {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--cy);
}

.page-about .about-body {
  min-width: 0;
}

/* ---------- 章节通用 ---------- */
.page-about .about-section {
  padding: 40px 0 6px;
}

.page-about .about-section + .about-section {
  margin-top: 12px;
  border-top: 1px solid rgba(31, 58, 92, .75);
}

.page-about .about-section__head {
  margin-bottom: 20px;
}

.page-about .about-section h2 {
  margin: 8px 0 12px;
  font-family: var(--font-title);
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.16;
  letter-spacing: .02em;
  color: var(--paper-2);
}

.page-about .about-lede {
  margin: 0;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 纵向赛季时间轴 ---------- */
.page-about .about-timeline {
  position: relative;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 12px;
  bottom: 18px;
  width: 2px;
  background: linear-gradient(180deg, var(--cy), var(--line) 72%);
  opacity: .6;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 28px 62px;
}

.page-about .about-timeline__item:last-child {
  padding-bottom: 8px;
}

.page-about .about-timeline__node {
  position: absolute;
  left: 0;
  top: 0;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  border: 2px solid var(--line);
  background: var(--ink-2);
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cy-light);
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}

.page-about .about-timeline__item:hover .about-timeline__node {
  border-color: var(--cy);
  box-shadow: 0 0 0 4px rgba(61, 232, 198, .13);
}

.page-about .about-timeline__title {
  margin: 8px 0 8px;
  font-family: var(--font-title);
  font-size: 19px;
  line-height: 1.35;
  letter-spacing: .02em;
  color: var(--paper-2);
}

.page-about .about-timeline__desc {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 团队四宫格 ---------- */
.page-about .about-crew {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 24px;
}

.page-about .about-crew__card {
  padding: 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, var(--ink-2), var(--ink-3));
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}

.page-about .about-crew__card:hover {
  border-color: var(--cy);
  transform: translateY(-2px);
}

.page-about .about-crew__idx {
  margin: 0;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--amber);
}

.page-about .about-crew__name {
  margin: 10px 0 10px;
  font-family: var(--font-title);
  font-size: 20px;
  letter-spacing: .02em;
  color: var(--paper-2);
}

.page-about .about-crew__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 图片容器 ---------- */
.page-about .about-figure {
  margin: 26px 0 0;
}

.page-about .about-figure--tight {
  margin-top: 0;
}

.page-about .about-media {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--ink-2);
}

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

.page-about .about-media--wide { aspect-ratio: 14 / 9; }
.page-about .about-media--team { aspect-ratio: 3 / 2; }
.page-about .about-media--square { aspect-ratio: 1 / 1; }

.page-about .about-media__tag {
  position: absolute;
  left: 14px;
  top: 14px;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: rgba(239, 161, 60, .94);
  color: #201203;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .1em;
}

.page-about .about-figcap {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 年鉴纸面卡片堆叠 ---------- */
.page-about .about-almanac {
  display: flex;
  flex-direction: column;
  margin-top: 26px;
}

.page-about .about-almanac__card {
  padding: 22px 20px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(13, 27, 46, .16);
  background: var(--paper);
  color: var(--about-paper-ink);
  box-shadow: 0 18px 34px -28px rgba(0, 0, 0, .95);
  transition: transform .3s var(--ease);
}

.page-about .about-almanac__card:nth-child(2) {
  margin-top: -12px;
  margin-left: 12px;
}

.page-about .about-almanac__card:nth-child(3) {
  margin-top: -12px;
  margin-left: 24px;
}

.page-about .about-almanac__card:hover {
  transform: translateY(-4px);
}

.page-about .about-almanac__label {
  margin: 0;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--cy-deep);
  border-bottom: 1px solid rgba(13, 27, 46, .18);
  padding-bottom: 8px;
}

.page-about .about-almanac__title {
  margin: 12px 0 10px;
  font-family: var(--font-title);
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: .02em;
  color: var(--about-paper-title);
}

.page-about .about-almanac__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--about-paper-ink);
}

/* ---------- 更新节奏 ---------- */
.page-about .about-cadence {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-top: 8px;
}

.page-about .about-cadence__text p {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

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

/* ---------- 合作统计 ---------- */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-stats__item {
  padding: 18px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, var(--ink-2), var(--ink-3));
}

.page-about .about-stats__num {
  display: block;
  font-family: var(--font-num);
  font-size: 26px;
  letter-spacing: .02em;
  color: var(--cy);
}

.page-about .about-stats__label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--muted);
}

/* ---------- 合作机构横向标签带 ---------- */
.page-about .about-partner {
  display: flex;
  gap: 14px;
  margin: 26px 0 0;
  padding: 4px 0 12px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-about .about-partner__card {
  flex: 0 0 80%;
  scroll-snap-align: start;
  padding: 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  border-top: 3px solid var(--cy-deep);
  background: var(--ink-2);
}

.page-about .about-partner__name {
  margin: 0 0 10px;
  font-family: var(--font-title);
  font-size: 18px;
  letter-spacing: .02em;
  color: var(--paper-2);
}

.page-about .about-partner__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 赛季观察 ---------- */
.page-about .about-season__lead {
  margin: 24px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--paper);
}

.page-about .about-season {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-season li {
  padding: 10px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(140, 247, 224, .3);
  background: rgba(14, 124, 107, .22);
  font-size: 13px;
  color: var(--cy-light);
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  margin-top: 44px;
  padding: 28px 22px 26px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: linear-gradient(140deg, rgba(14, 124, 107, .34), var(--ink-2) 62%);
}

.page-about .about-next h2 {
  margin: 8px 0 12px;
  font-family: var(--font-title);
  font-size: clamp(24px, 3.4vw, 32px);
  letter-spacing: .02em;
  color: var(--paper-2);
}

.page-about .about-next__lede {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper);
}

.page-about .about-next__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 20px;
}

.page-about .about-next__card {
  display: block;
  padding: 22px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(13, 27, 46, .62);
  text-decoration: none;
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}

.page-about .about-next__card:hover,
.page-about .about-next__card:focus-visible {
  border-color: var(--cy);
  transform: translateY(-3px);
}

.page-about .about-next__title {
  margin: 0 0 10px;
  font-family: var(--font-title);
  font-size: 20px;
  letter-spacing: .02em;
  color: var(--paper-2);
}

.page-about .about-next__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
}

.page-about .about-next__foot {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-about .about-inline-link {
  color: var(--cy);
  text-decoration: underline;
  text-decoration-color: rgba(61, 232, 198, .45);
  text-underline-offset: 3px;
}

.page-about .about-inline-link:hover,
.page-about .about-inline-link:focus-visible {
  color: var(--cy-light);
  text-decoration-color: var(--cy-light);
}

/* ---------- 断点 ---------- */
@media (min-width: 620px) {
  .page-about .about-hero {
    padding: 40px 32px 42px;
  }

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

  .page-about .about-almanac__card:nth-child(2) { margin-left: 22px; }
  .page-about .about-almanac__card:nth-child(3) { margin-left: 44px; }

  .page-about .about-partner__card {
    flex: 0 0 300px;
  }

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

@media (min-width: 760px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-cadence {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: start;
    gap: 32px;
  }

  .page-about .about-figure--tight {
    margin-top: 0;
  }

  .page-about .about-almanac {
    max-width: 720px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-shell {
    display: grid;
    grid-template-columns: var(--about-spine-w) minmax(0, 1fr);
    gap: 44px;
    align-items: start;
    margin-top: 34px;
  }

  .page-about .about-spine {
    position: sticky;
    top: calc(var(--bar-h) + 22px);
    margin: 0;
    padding-top: 6px;
    border-right: 1px solid rgba(31, 58, 92, .7);
    padding-right: 18px;
  }

  .page-about .about-spine__list {
    flex-direction: column;
    gap: 2px;
    padding: 0;
    overflow: visible;
  }

  .page-about .about-spine__list a {
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: var(--radius-sm);
    background: transparent;
    white-space: normal;
    padding: 9px 12px;
    line-height: 1.45;
  }

  .page-about .about-spine__list a:hover,
  .page-about .about-spine__list a:focus-visible {
    border-left-color: var(--cy);
    background: rgba(61, 232, 198, .09);
  }

  .page-about .about-section {
    padding-top: 46px;
  }

  .page-about .about-section:first-child {
    padding-top: 6px;
  }

  .page-about .about-almanac__card:nth-child(2) { margin-left: 32px; }
  .page-about .about-almanac__card:nth-child(3) { margin-left: 64px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-crew__card,
  .page-about .about-almanac__card,
  .page-about .about-next__card,
  .page-about .about-timeline__node {
    transition: none;
  }
}