.page-about {
  --about-rail-w: 200px;
  --about-radius: 3px;
  background: var(--snow);
  color: var(--navy);
  font-family: var(--font-cn);
  padding-bottom: 3.5rem;
}

.page-about .breadcrumb {
  padding: 1.1rem 0 .2rem;
  font-size: .8rem;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: .9rem 0 1.6rem;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 1.6rem;
}

.page-about .about-hero__lead .anno {
  display: block;
  margin: 0 0 .7rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .16em;
  color: var(--teal);
  text-transform: uppercase;
}

.page-about .about-hero__lead h1 {
  margin: 0;
  font-size: clamp(1.9rem, 7.6vw, 3.5rem);
  line-height: 1.06;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--navy);
  max-width: 15em;
}

.page-about .about-hero__intro {
  margin: 1rem 0 0;
  max-width: 34em;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .7rem;
  margin-top: 1.4rem;
}

.page-about .about-hero__card {
  position: relative;
  background: var(--navy);
  color: var(--snow);
  padding: 1.4rem 1.3rem 1.2rem;
  border-radius: var(--about-radius);
  box-shadow: var(--shadow-2);
  overflow: hidden;
}

.page-about .about-hero__card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto auto;
  width: 96px;
  height: 96px;
  background:
    repeating-linear-gradient(135deg, rgba(47,179,163,.5) 0 6px, transparent 6px 14px);
  opacity: .28;
  pointer-events: none;
}

.page-about .about-hero__card-label {
  margin: 0;
  font-size: .74rem;
  letter-spacing: .12em;
  color: var(--jade);
}

.page-about .about-hero__version {
  margin: .2rem 0 .9rem;
  font-family: var(--font-mono);
  font-size: clamp(2.6rem, 12vw, 3.8rem);
  font-weight: 700;
  line-height: 1;
  color: var(--snow);
  letter-spacing: -.02em;
}

.page-about .about-hero__meta {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .55rem;
}

.page-about .about-hero__meta li {
  display: grid;
  gap: .1rem;
  padding-top: .55rem;
  border-top: 1px solid rgba(246,245,239,.16);
}

.page-about .about-hero__meta span {
  font-size: .7rem;
  letter-spacing: .08em;
  color: rgba(246,245,239,.6);
}

.page-about .about-hero__meta strong {
  font-size: .9rem;
  font-weight: 600;
  color: var(--snow);
}

.page-about .about-hero__hint {
  margin: .9rem 0 0;
  font-size: .74rem;
  line-height: 1.6;
  color: rgba(246,245,239,.66);
  border-left: 2px solid var(--orange);
  padding-left: .6rem;
}

/* ---------- 数字条 ---------- */
.page-about .about-stats {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--stone);
}

.page-about .about-stats__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
}

.page-about .about-stats__item {
  background: var(--stone);
  padding: .95rem .8rem;
  display: grid;
  gap: .12rem;
}

.page-about .about-stats__num {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.1;
}

.page-about .about-stats__label {
  font-size: .74rem;
  color: var(--muted);
  line-height: 1.4;
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  padding: 2.2rem 0 .6rem;
}

.page-about .about-timeline__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: .5rem;
  margin-bottom: 1rem;
}

.page-about .about-timeline__head h2 {
  margin: 0;
  font-size: clamp(1.2rem, 4.4vw, 1.6rem);
  font-weight: 800;
  letter-spacing: -.01em;
}

.page-about .about-timeline__head .anno {
  font-size: .72rem;
  color: var(--muted);
}

.page-about .about-timeline__track {
  list-style: none;
  margin: 0;
  padding: 0 0 .9rem;
  display: flex;
  gap: .75rem;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-timeline__node {
  position: relative;
  flex: 0 0 78%;
  min-width: 220px;
  scroll-snap-align: start;
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 3px solid var(--teal);
  border-radius: var(--about-radius);
  padding: 1rem .95rem 1.1rem;
  box-shadow: var(--shadow-1);
  transition: transform .22s ease, box-shadow .22s ease, border-left-color .22s ease;
}

.page-about .about-timeline__dot {
  position: absolute;
  top: 1.15rem;
  right: 1rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--jade);
}

.page-about .about-timeline__node--now {
  border-left-color: var(--orange);
  background: var(--navy);
  color: var(--snow);
}

.page-about .about-timeline__node--now .about-timeline__dot {
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(232,117,43,.22);
}

.page-about .about-timeline__node--now h3 {
  color: var(--snow);
}

.page-about .about-timeline__node--now p {
  color: rgba(246,245,239,.74);
}

.page-about .about-timeline__node--now .about-timeline__year {
  color: var(--orange);
}

.page-about .about-timeline__year {
  margin: 0 0 .35rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .04em;
  color: var(--teal);
}

.page-about .about-timeline__node h3 {
  margin: 0 0 .4rem;
  font-size: .98rem;
  font-weight: 700;
  line-height: 1.35;
}

.page-about .about-timeline__node p {
  margin: 0;
  font-size: .82rem;
  line-height: 1.65;
  color: var(--muted);
}

.page-about .about-timeline__node:hover,
.page-about .about-timeline__node:focus-within {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2);
  border-left-color: var(--orange);
}

/* ---------- 主体栅格 ---------- */
.page-about .about-body {
  padding-top: 1.2rem;
}

.page-about .about-body__grid {
  display: grid;
  gap: 1.6rem;
}

.page-about .about-rail {
  border-top: 1px solid var(--line);
  padding-top: .9rem;
}

.page-about .about-rail .anno--vertical {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .2em;
  color: var(--clay);
  margin: 0 0 .7rem;
}

.page-about .about-rail__list {
  list-style: none;
  margin: 0 0 .8rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
}

.page-about .about-rail__link {
  display: inline-block;
  padding: .35rem .6rem;
  font-size: .8rem;
  font-family: var(--font-mono);
  color: var(--navy);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  background: var(--navy);
  color: var(--snow);
  border-color: var(--navy);
  outline: none;
}

.page-about .about-rail__note {
  margin: 0;
  font-size: .78rem;
  line-height: 1.7;
  color: var(--muted);
}

.page-about .about-rail__note a {
  color: var(--teal);
}

/* ---------- 堆叠画板 ---------- */
.page-about .about-panels {
  display: grid;
  gap: 1.1rem;
}

.page-about .about-panel {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--about-radius);
  padding: 1.3rem 1.1rem 1.4rem;
  box-shadow: var(--shadow-1);
  scroll-margin-top: 92px;
  overflow: hidden;
}

.page-about .about-panel__index {
  margin: 0 0 .5rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .18em;
  color: var(--clay);
}

.page-about .about-panel h2 {
  margin: 0 0 .8rem;
  font-size: clamp(1.2rem, 5vw, 1.62rem);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -.01em;
  color: var(--navy);
}

.page-about .about-panel p {
  margin: 0 0 .85rem;
  font-size: .92rem;
  line-height: 1.8;
  color: var(--muted);
}

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

.page-about .about-panel a {
  color: var(--teal);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-about .about-panel a:hover {
  color: var(--orange);
}

.page-about .about-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin: 1rem 0 0;
  padding: 0;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: 1.2rem;
  margin-top: 1.1rem;
}

.page-about .about-team__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .55rem;
}

.page-about .about-team__role {
  position: relative;
  padding: .8rem .85rem .85rem 2.5rem;
  background: var(--snow);
  border: 1px solid var(--line-soft);
  border-radius: var(--about-radius);
  transition: background .2s ease, border-color .2s ease, transform .2s ease;
}

.page-about .about-team__role:hover,
.page-about .about-team__role:focus-within {
  background: #fff;
  border-color: var(--jade);
  transform: translateX(3px);
}

.page-about .about-team__no {
  position: absolute;
  left: .8rem;
  top: .85rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--orange);
}

.page-about .about-team__role h3 {
  margin: 0 0 .22rem;
  font-size: .95rem;
  font-weight: 700;
  color: var(--navy);
}

.page-about .about-team__role p {
  margin: 0;
  font-size: .83rem;
  line-height: 1.65;
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 0;
  border-radius: var(--about-radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--stone);
}

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

.page-about .about-figure figcaption {
  padding: .6rem .8rem;
  font-size: .76rem;
  line-height: 1.6;
  color: var(--muted);
  background: var(--paper);
  border-top: 1px solid var(--line-soft);
}

/* ---------- 版本文档 ---------- */
.page-about .about-panel--version {
  background: var(--snow);
  border-color: rgba(29,127,122,.35);
}

.page-about .about-version {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.1rem;
}

.page-about .about-version__display {
  background: var(--night);
  color: var(--snow);
  padding: 1.1rem 1rem;
  border-radius: var(--about-radius);
  border-left: 3px solid var(--orange);
}

.page-about .about-version__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--jade);
}

.page-about .about-version__num {
  margin: .25rem 0 .1rem;
  font-family: var(--font-mono);
  font-size: clamp(2.8rem, 14vw, 4.2rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--snow);
}

.page-about .about-version__sub {
  margin: 0;
  font-size: .76rem;
  color: rgba(246,245,239,.66);
}

.page-about .about-version__links {
  display: flex;
  flex-wrap: wrap;
  gap: .9rem;
  font-size: .85rem;
  font-weight: 600;
  margin-top: .2rem;
}

.page-about .about-figure--wide {
  margin-top: .3rem;
}

/* ---------- 赛季 ---------- */
.page-about .about-season {
  display: grid;
  gap: 1.2rem;
  margin-top: .9rem;
}

.page-about .about-season__figures {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .5rem;
}

.page-about .about-season__figure {
  background: var(--stone);
  border-top: 3px solid var(--jade);
  padding: .8rem .5rem;
  text-align: center;
  border-radius: 0 0 var(--about-radius) var(--about-radius);
}

.page-about .about-season__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--navy);
  line-height: 1.15;
}

.page-about .about-season__figure p {
  margin: .25rem 0 0;
  font-size: .72rem;
  line-height: 1.45;
  color: var(--muted);
}

.page-about .about-season__list {
  background: var(--snow);
  border: 1px solid var(--line-soft);
  border-radius: var(--about-radius);
  padding: 1rem .9rem;
}

.page-about .about-season__list h3 {
  margin: 0 0 .75rem;
  font-size: .95rem;
  font-weight: 700;
  color: var(--navy);
  padding-bottom: .5rem;
  border-bottom: 1px solid var(--line-soft);
}

.page-about .about-season__list ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .5rem;
}

.page-about .about-season__list li {
  display: grid;
  gap: .1rem;
  padding-left: .8rem;
  border-left: 2px solid var(--teal);
}

.page-about .about-season__list strong {
  font-size: .82rem;
  font-weight: 700;
  color: var(--navy);
}

.page-about .about-season__list span {
  font-size: .78rem;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-season__more {
  margin: .85rem 0 0;
  font-size: .84rem;
  font-weight: 600;
}

/* ---------- 新疆地区 ---------- */
.page-about .about-panel--region {
  background: var(--navy);
  border-color: var(--navy);
  padding: 0;
}

.page-about .about-panel__bg {
  display: block;
  width: 100%;
  max-width: 100%;
  height: 150px;
  object-fit: cover;
  opacity: .5;
}

.page-about .about-panel__bg-inner {
  position: relative;
  padding: 1.2rem 1.1rem 1.4rem;
  margin-top: -60px;
  background: linear-gradient(180deg, rgba(11,42,74,0) 0%, rgba(11,42,74,.92) 42%, var(--navy) 100%);
}

.page-about .about-panel--region .about-panel__index {
  color: var(--jade);
}

.page-about .about-panel--region h2 {
  color: var(--snow);
}

.page-about .about-panel--region p {
  color: rgba(246,245,239,.8);
}

.page-about .about-panel--region a {
  color: var(--jade);
}

.page-about .about-panel--region a:hover {
  color: var(--snow);
}

.page-about .about-panel__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-top: 1.1rem;
}

.page-about .about-btn--onDark {
  color: var(--snow);
  border-color: rgba(246,245,239,.4);
}

.page-about .about-btn--onDark:hover,
.page-about .about-btn--onDark:focus-visible {
  background: rgba(246,245,239,.12);
  color: var(--snow);
  border-color: var(--snow);
}

/* ---------- 中等屏 ---------- */
@media (min-width: 620px) {
  .page-about .about-stats__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-panel {
    padding: 1.6rem 1.5rem 1.7rem;
  }

  .page-about .about-panel h2 {
    font-size: clamp(1.35rem, 3.2vw, 1.75rem);
  }

  .page-about .about-panel p {
    font-size: .96rem;
  }

  .page-about .about-timeline__node {
    flex-basis: 44%;
  }

  .page-about .about-version {
    grid-template-columns: minmax(0,.85fr) minmax(0,1.15fr);
    align-items: start;
    gap: 1.4rem;
  }

  .page-about .about-season {
    grid-template-columns: minmax(0,.8fr) minmax(0,1.2fr);
    align-items: start;
  }

  .page-about .about-season__figures {
    grid-template-columns: 1fr;
  }

  .page-about .about-season__figure {
    text-align: left;
    padding: .7rem .8rem;
    border-top: none;
    border-left: 3px solid var(--jade);
    border-radius: 0 var(--about-radius) var(--about-radius) 0;
  }

  .page-about .about-panel__bg {
    height: 200px;
  }

  .page-about .about-panel__bg-inner {
    margin-top: -110px;
    padding: 1.4rem 1.5rem 1.7rem;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-about {
    padding-bottom: 4.5rem;
  }

  .page-about .about-hero {
    padding: 1.4rem 0 2rem;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, .6fr);
    gap: 2.6rem;
    align-items: end;
  }

  .page-about .about-hero__intro {
    font-size: 1.06rem;
    max-width: 36em;
  }

  .page-about .about-hero__card {
    padding: 1.5rem 1.4rem 1.3rem;
  }

  .page-about .about-stats__item {
    padding: 1.15rem 1.1rem;
  }

  .page-about .about-stats__num {
    font-size: 1.6rem;
  }

  .page-about .about-timeline {
    padding: 3rem 0 1rem;
  }

  .page-about .about-timeline__track {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: .7rem;
    overflow: visible;
    position: relative;
  }

  .page-about .about-timeline__track::before {
    content: "";
    position: absolute;
    top: .42rem;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--teal), var(--jade) 55%, var(--orange));
    opacity: .45;
  }

  .page-about .about-timeline__node {
    flex: initial;
    min-width: 0;
    padding: 1.6rem .8rem 1rem;
    border: 1px solid var(--line);
    border-left: 1px solid var(--line);
    background: var(--paper);
    box-shadow: none;
  }

  .page-about .about-timeline__node::after {
    content: "";
    position: absolute;
    top: .1rem;
    left: .8rem;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--teal);
    border: 2px solid var(--snow);
  }

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

  .page-about .about-timeline__node--now::after {
    background: var(--orange);
  }

  .page-about .about-timeline__node h3 {
    font-size: .92rem;
  }

  .page-about .about-timeline__node p {
    font-size: .78rem;
  }

  .page-about .about-timeline__node:hover,
  .page-about .about-timeline__node:focus-within {
    transform: translateY(-4px);
    border-color: var(--jade);
    border-left-color: var(--jade);
    box-shadow: var(--shadow-2);
  }

  .page-about .about-timeline__node--now:hover,
  .page-about .about-timeline__node--now:focus-within {
    border-color: var(--orange);
    border-left-color: var(--orange);
  }

  .page-about .about-body__grid {
    grid-template-columns: var(--about-rail-w) minmax(0, 1fr);
    gap: 3rem;
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: 84px;
    border-top: none;
    border-left: 1px solid var(--line);
    padding: .2rem 0 0 1rem;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    gap: .35rem;
  }

  .page-about .about-rail__link {
    display: block;
    border-radius: 2px;
    border-color: transparent;
    background: transparent;
    padding: .45rem .55rem;
  }

  .page-about .about-rail__link:hover,
  .page-about .about-rail__link:focus-visible {
    background: var(--navy);
    color: var(--snow);
    border-color: var(--navy);
  }

  .page-about .about-panel {
    padding: 2rem 2rem 2.1rem;
  }

  .page-about .about-panel:nth-child(even) {
    margin-left: 1.4rem;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 1.6rem;
    align-items: start;
  }

  .page-about .about-version {
    grid-template-columns: minmax(0, .7fr) minmax(0, 1.3fr);
    gap: 2rem;
  }

  .page-about .about-version__display {
    padding: 1.5rem 1.3rem;
  }

  .page-about .about-season {
    grid-template-columns: minmax(0, .75fr) minmax(0, 1.25fr);
    gap: 1.8rem;
  }

  .page-about .about-panel__bg {
    height: 260px;
  }

  .page-about .about-panel__bg-inner {
    margin-top: -150px;
    padding: 1.8rem 2rem 2.1rem;
  }

  .page-about .about-panel--region {
    margin-left: 0 !important;
  }
}

@media (min-width: 1080px) {
  .page-about .about-timeline__node {
    padding: 1.7rem 1rem 1.15rem;
  }

  .page-about .about-panel {
    padding: 2.2rem 2.4rem 2.3rem;
  }
}

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

  .page-about .about-timeline__node:hover,
  .page-about .about-timeline__node:focus-within,
  .page-about .about-team__role:hover,
  .page-about .about-team__role:focus-within {
    transform: none;
  }
}