.page-about {
  --about-pad-x: 20px;
  --about-rhythm: 40px;
  padding-bottom: 64px;
}

/* ---------- 面包屑之上留白 ---------- */
.page-about .breadcrumbs {
  margin-top: 18px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  margin-top: 10px;
  padding: 34px 0 46px;
  background:
    radial-gradient(120% 92% at 88% 0%, rgba(21, 122, 78, .46) 0%, transparent 62%),
    linear-gradient(162deg, #0A1310 0%, #10241C 56%, #0A1310 100%);
  border-bottom-left-radius: var(--radius-xl);
  border-bottom-right-radius: var(--radius-xl);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan) 24%, var(--signal) 64%, transparent);
  opacity: .6;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
}

.page-about .about-hero__kicker {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-about .about-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 7.4vw, 54px);
  line-height: 1.08;
  letter-spacing: -.01em;
  color: var(--mist);
  max-width: 24ch;
}

.page-about .about-hero__lede {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
  opacity: .88;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-stat {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: rgba(10, 19, 16, .62);
}

.page-about .about-stat__value {
  display: block;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  font-size: clamp(22px, 5.4vw, 30px);
  line-height: 1.1;
  color: var(--amber);
}

.page-about .about-stat__label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 页面栅格 ---------- */
.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  margin-top: 44px;
}

/* ---------- 章节索引 ---------- */
.page-about .about-toc {
  min-width: 0;
}

.page-about .about-toc__title {
  margin: 0 0 10px;
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}

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

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

.page-about .about-toc__link {
  display: block;
  flex: 0 0 auto;
  padding: 9px 15px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 13px;
  line-height: 1.4;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color .22s var(--ease), background-color .22s var(--ease), border-color .22s var(--ease);
}

.page-about .about-toc__link:hover,
.page-about .about-toc__link:focus-visible {
  color: var(--mist);
  border-color: var(--green-track);
  outline: 2px solid transparent;
}

.page-about .about-toc__link[aria-current]:not([aria-current="false"]) {
  background: var(--green-track);
  border-color: var(--green-track);
  color: var(--cream);
}

/* ---------- 内容流 ---------- */
.page-about .about-flow {
  display: flex;
  flex-direction: column;
  gap: var(--about-rhythm);
  min-width: 0;
}

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

/* ---------- 品牌方向：奶油长文面板 ---------- */
.page-about .about-direction {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding: 28px 22px 30px;
  border-radius: var(--radius-l);
  overflow: hidden;
}

.page-about .about-direction .panel__title {
  margin: 8px 0 0;
}

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

.page-about .about-audience {
  display: grid;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-audience li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--brown-ink);
}

.page-about .about-audience__dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--signal);
}

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

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

.page-about .about-figure--16x9 img { aspect-ratio: 16 / 9; }
.page-about .about-figure--4x3 img { aspect-ratio: 4 / 3; }

/* ---------- 团队面板 ---------- */
.page-about .about-team {
  padding: 28px 22px 32px;
  border-radius: var(--radius-l);
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 24px;
}

.page-about .team-card {
  position: relative;
  padding: 20px 18px 20px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: linear-gradient(170deg, rgba(21, 122, 78, .18), rgba(10, 19, 16, .34));
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}

.page-about .team-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 3px;
  border-radius: 999px;
  background: var(--green-track);
  transition: width .32s var(--ease), background-color .32s var(--ease);
}

.page-about .team-card:hover,
.page-about .team-card:focus-visible {
  border-color: var(--green-track);
  outline: none;
}

.page-about .team-card:hover::before,
.page-about .team-card:focus-visible::before {
  width: 10px;
  background: var(--signal);
}

.page-about .team-card__role {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: .01em;
  color: var(--mist);
}

.page-about .team-card__count {
  display: block;
  margin: 6px 0 0;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-about .team-card__brief {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist);
  opacity: .9;
}

.page-about .team-card__more {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  overflow: hidden;
  max-height: 260px;
  opacity: 1;
  transition: max-height .36s var(--ease), opacity .3s var(--ease), margin-top .36s var(--ease);
}

/* ---------- 赛季节奏 ---------- */
.page-about .about-season__intro {
  max-width: 62ch;
}

.page-about .about-season__lede {
  margin: 12px 0 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-season__figure {
  margin: 24px 0 0;
  border-radius: var(--radius-l);
}

.page-about .season-list {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .season-item {
  position: relative;
  margin-left: 6px;
  padding: 0 0 24px 32px;
  border-left: 1px solid var(--line);
}

.page-about .season-item:last-child {
  padding-bottom: 0;
}

.page-about .season-item::before {
  content: "";
  position: absolute;
  left: -5.5px;
  top: 5px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ink-void);
  border: 2px solid var(--green-track);
}

.page-about .season-item__phase {
  display: inline-block;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--signal);
}

.page-about .season-item__title {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  line-height: 1.3;
  color: var(--mist);
}

.page-about .season-item__text {
  margin: 8px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 能力阶段条 ---------- */
.page-about .about-growth__lede {
  margin: 12px 0 0;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .stage-rail {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(232px, 82%);
  gap: 14px;
  margin: 24px 0 0;
  padding: 0 0 10px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-about .stage-rail > .stage-card {
  scroll-snap-align: start;
}

.page-about .stage-card {
  position: relative;
  padding: 22px 20px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background: linear-gradient(152deg, rgba(16, 36, 28, .96), rgba(10, 19, 16, .88));
  overflow: hidden;
}

.page-about .stage-card::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--green-track), var(--cyan));
  opacity: .55;
}

.page-about .stage-card__no {
  display: block;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  font-size: 26px;
  line-height: 1;
  color: var(--amber);
}

.page-about .stage-card__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.32;
  color: var(--mist);
}

.page-about .stage-card__text {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--muted);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  padding: 28px 22px 32px;
  border-radius: var(--radius-l);
  overflow: hidden;
}

.page-about .about-partners .panel__title {
  margin: 8px 0 0;
}

.page-about .about-partners__text {
  margin: 14px 0 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--mist);
  opacity: .88;
}

.page-about .eco-list {
  display: grid;
  gap: 10px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .eco-list li {
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
  background: rgba(21, 122, 78, .16);
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--mist);
}

.page-about .about-partners__award {
  margin: 20px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--signal);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--amber);
}

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

/* ---------- 记录原则与联系入口 ---------- */
.page-about .about-principles {
  padding: 28px 22px 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  background:
    radial-gradient(92% 120% at 100% 0%, rgba(47, 217, 232, .14), transparent 62%),
    var(--green-deep);
}

.page-about .about-principles__text {
  margin: 14px 0 0;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
  opacity: .9;
}

.page-about .about-links {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-top: 24px;
}

.page-about .about-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(10, 19, 16, .56);
  font-size: 15px;
  color: var(--mist);
  text-decoration: none;
  transition: border-color .24s var(--ease), background-color .24s var(--ease), color .24s var(--ease);
}

.page-about .about-link::after {
  content: "→";
  font-family: var(--font-num);
  font-size: 15px;
  color: var(--cyan);
  transition: transform .24s var(--ease);
}

.page-about .about-link:hover,
.page-about .about-link:focus-visible {
  border-color: var(--cyan);
  background: rgba(47, 217, 232, .1);
  outline: none;
}

.page-about .about-link:hover::after,
.page-about .about-link:focus-visible::after {
  transform: translateX(4px);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 760px) {
  .page-about .about-hero {
    padding: 46px 0 58px;
  }

  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
  }

  .page-about .about-audience {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px 22px;
  }

  .page-about .about-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
  }

  .page-about .about-direction,
  .page-about .about-team,
  .page-about .about-partners,
  .page-about .about-principles {
    padding: 34px 32px 38px;
  }
}

@media (min-width: 900px) {
  .page-about {
    --about-rhythm: 54px;
  }

  .page-about .about-direction {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: start;
    gap: 38px;
    padding: 42px 42px 46px;
    border-radius: var(--radius-xl);
  }

  .page-about .about-team__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-team {
    border-radius: var(--radius-xl);
  }

  .page-about .stage-rail {
    grid-auto-flow: row;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
    overflow: visible;
    padding-bottom: 0;
    scroll-snap-type: none;
  }

  .page-about .about-partners {
    padding: 42px;
    border-radius: var(--radius-xl);
  }

  .page-about .about-partners__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
    gap: 38px;
    align-items: center;
  }

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

  .page-about .about-principles {
    padding: 38px 36px 42px;
    border-radius: var(--radius-xl);
  }

  .page-about .about-season__figure {
    border-radius: var(--radius-xl);
  }
}

@media (min-width: 1080px) {
  .page-about .about-layout {
    grid-template-columns: 196px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .about-toc {
    position: sticky;
    top: calc(var(--band-h) + 22px);
  }

  .page-about .about-toc__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-about .about-toc__link {
    padding: 9px 12px 9px 15px;
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
    font-size: 13.5px;
    line-height: 1.55;
    white-space: normal;
  }

  .page-about .about-toc__link[aria-current]:not([aria-current="false"]) {
    background: transparent;
    color: var(--cream);
    border-left-color: var(--cyan);
  }

  .page-about .about-section--wide {
    padding-left: clamp(0px, 3%, 34px);
  }

  .page-about .about-section--narrow {
    padding-right: clamp(0px, 7%, 76px);
  }

  .page-about .about-principles {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (min-width: 1180px) {
  .page-about .about-direction {
    gap: 52px;
  }
}

/* ---------- 悬停展开仅限真正支持悬停的设备 ---------- */
@media (hover: hover) and (min-width: 900px) {
  .page-about .team-card__more {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
  }

  .page-about .team-card:hover .team-card__more,
  .page-about .team-card:focus-visible .team-card__more,
  .page-about .team-card:focus-within .team-card__more {
    max-height: 260px;
    opacity: 1;
    margin-top: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-card,
  .page-about .team-card::before,
  .page-about .team-card__more,
  .page-about .about-link,
  .page-about .about-link::after,
  .page-about .about-toc__link {
    transition: none;
  }
}