.page-about {
  --ab-rail: 56px;
  --ab-gap: 14px;
  --ab-line: rgba(31, 167, 184, 0.34);
  --ab-hair: rgba(37, 64, 90, 0.2);
  background: var(--paper);
  color: var(--text);
}

@media (min-width: 768px) {
  .page-about {
    --ab-rail: 92px;
    --ab-gap: 32px;
  }
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  padding-top: 22px;
  padding-bottom: 4px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--paper);
  padding: 26px 0 0;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(111, 211, 222, 0.09) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(0deg, rgba(111, 211, 222, 0.07) 0 1px, transparent 1px 96px);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: 30px;
  padding-bottom: 36px;
}

.page-about .about-hero .eyebrow {
  color: var(--aqua-mid);
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(30px, 6.4vw, 58px);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.012em;
  color: var(--paper);
  max-width: 17em;
}

.page-about .about-hero__intro {
  margin: 18px 0 0;
  max-width: 33em;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(246, 250, 251, 0.78);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__media {
  margin: 0 calc(-1 * var(--gutter)) 0 0;
  border: 1px solid var(--grid);
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.85fr);
    align-items: end;
    gap: 48px;
    padding-bottom: 42px;
  }

  .page-about .about-hero__media {
    margin: 0 0 6px;
  }
}

/* ---------- 通用标题 ---------- */
.page-about h2 {
  margin: 12px 0 0;
  font-size: clamp(23px, 3.8vw, 38px);
  line-height: 1.16;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
  max-width: 22em;
}

.page-about h3 {
  margin: 0;
  font-size: 18px;
  line-height: 1.45;
  font-weight: 700;
  color: var(--text);
}

/* ---------- 赛季长卷 ---------- */
.page-about .season-section {
  padding: 46px 0 30px;
  background: var(--paper);
}

.page-about .season-section__lede {
  margin: 14px 0 0;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .season-index {
  margin-top: 26px;
}

.page-about .season-index__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .season-index__list a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 50px;
  height: 32px;
  padding: 0 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--ink);
  background: var(--aqua-soft);
  border: 1px solid rgba(31, 167, 184, 0.42);
  text-decoration: none;
  transition: background-color 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-about .season-index__list a:hover,
.page-about .season-index__list a:focus-visible {
  background: var(--lime);
  border-color: var(--lime-deep);
  color: var(--ink);
}

.page-about .season-scroll {
  position: relative;
  margin: 36px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .season-scroll::before {
  content: "";
  position: absolute;
  left: calc(var(--ab-rail) / 2 - 0.5px);
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: var(--ab-line);
}

.page-about .season-node {
  position: relative;
  display: grid;
  grid-template-columns: var(--ab-rail) minmax(0, 1fr);
  column-gap: var(--ab-gap);
  padding: 22px 0;
  scroll-margin-top: 96px;
}

.page-about .season-node__rail {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding-top: 4px;
}

.page-about .season-node__tick {
  flex: none;
  width: 9px;
  height: 9px;
  background: var(--lime);
  box-shadow: 0 0 0 4px rgba(216, 245, 66, 0.16);
}

.page-about .season-node__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-about .season-node__body {
  padding-bottom: 6px;
}

.page-about .season-node__body::after {
  content: "";
  display: block;
  height: 2px;
  margin-top: 20px;
  background: linear-gradient(
    90deg,
    var(--aqua) 0%,
    var(--aqua) 24%,
    rgba(31, 167, 184, 0.14) 24%,
    rgba(31, 167, 184, 0.14) 100%
  );
}

.page-about .season-node__body p {
  margin: 10px 0 0;
  max-width: 38em;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--text);
}

.page-about .season-node:target .season-node__num {
  color: var(--lime-ink);
}

.page-about .season-node:target .season-node__tick {
  background: var(--lime-deep);
  box-shadow: 0 0 0 5px rgba(216, 245, 66, 0.22);
}

.page-about .season-node:target .season-node__body {
  background: linear-gradient(90deg, rgba(216, 245, 66, 0.14), rgba(216, 245, 66, 0) 72%);
}

@media (min-width: 1024px) {
  .page-about .season-node__body p {
    max-width: 34em;
  }

  .page-about .season-node {
    padding: 28px 0;
  }
}

/* ---------- 我们做什么 ---------- */
.page-about .about-doing {
  position: relative;
  padding: 46px 0 50px;
  background: var(--ink);
  color: var(--paper);
}

.page-about .about-doing::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--aqua) 0%, var(--aqua) 34%, var(--lime) 34%, var(--lime) 42%, transparent 42%);
}

.page-about .about-doing .eyebrow {
  color: var(--aqua-mid);
}

.page-about .about-doing h2 {
  color: var(--paper);
}

.page-about .about-doing__lede {
  margin: 16px 0 0;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(246, 250, 251, 0.76);
}

.page-about .about-doing__cats {
  display: flex;
  flex-wrap: wrap;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--grid);
  border-bottom: 1px solid var(--grid);
}

.page-about .about-doing__cats li {
  flex: 1 1 132px;
  padding: 15px 14px;
  border-right: 1px solid var(--grid);
  font-family: var(--font-mono);
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--aqua-mid);
}

.page-about .about-doing__cats li:last-child {
  border-right: 0;
}

.page-about .about-doing__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 30px 0 0;
  background: var(--grid);
}

.page-about .about-doing__fact {
  padding: 18px 16px;
  background: var(--ink-2);
}

.page-about .about-doing__fact dt {
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--muted-dark);
}

.page-about .about-doing__fact dd {
  margin: 8px 0 0;
  font-size: 15px;
  color: var(--paper);
}

.page-about .about-doing__fact dd b {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--lime);
}

@media (min-width: 860px) {
  .page-about .about-doing__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: 46px 0 44px;
  background: var(--paper);
}

.page-about .about-team__lede {
  margin: 14px 0 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

.page-about .about-team__grid {
  margin-top: 28px;
}

.page-about .team-lanes {
  display: grid;
  gap: 18px;
}

.page-about .team-lane {
  position: relative;
  padding: 22px 18px 20px 24px;
  background: #fff;
  border: 1px solid var(--ab-hair);
  transition: transform 0.18s var(--ease), border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-about .team-lane::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--aqua);
}

.page-about .team-lane:last-child::before {
  background: var(--lime-deep);
}

.page-about .team-lane:hover,
.page-about .team-lane:focus-within {
  transform: translateY(-2px);
  border-color: var(--aqua);
  box-shadow: 0 8px 0 -4px rgba(31, 167, 184, 0.24);
}

.page-about .team-lane__head {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-about .team-lane__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-about .team-lane__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 28px;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.page-about .team-lane__count small {
  margin-left: 2px;
  font-size: 13px;
  letter-spacing: 0;
  color: var(--muted);
}

.page-about .team-lane p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text);
}

.page-about .team-lane__shift {
  margin-top: 16px !important;
  padding-top: 12px;
  border-top: 1px dashed var(--ab-hair);
  font-size: 13px !important;
  color: var(--muted) !important;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-about .team-lane__shift b {
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-about .team-lane:hover .team-lane__shift,
.page-about .team-lane:focus-within .team-lane__shift {
  color: var(--text) !important;
  border-top-color: var(--aqua);
}

.page-about .about-team__media {
  margin: 22px 0 0;
  border: 1px solid var(--grid);
}

.page-about .about-team__media .media-frame__caption {
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--muted);
}

@media (min-width: 720px) {
  .page-about .team-lanes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-about .about-team__grid {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 0 44px;
    align-items: start;
  }

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

  .page-about .about-team__media {
    margin-top: 0;
    position: sticky;
    top: 96px;
  }
}

/* ---------- 合作生态 ---------- */
.page-about .about-partner {
  padding: 46px 0 48px;
  background: var(--aqua-soft);
}

.page-about .about-partner h2 {
  color: var(--text);
}

.page-about .about-partner__lede {
  margin: 16px 0 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text);
}

.page-about .about-partner__media {
  margin: 30px 0 0;
  border: 1px solid rgba(31, 167, 184, 0.38);
  background: #fff;
}

.page-about .about-partner__media .media-frame__caption {
  margin-top: 10px;
  font-size: 12.5px;
  color: var(--muted);
}

.page-about .about-partner__notes {
  display: grid;
  gap: 1px;
  margin-top: 28px;
  background: rgba(31, 167, 184, 0.38);
}

.page-about .about-partner__note {
  padding: 20px 18px;
  background: var(--paper);
}

.page-about .about-partner__note h3 {
  font-size: 16px;
}

.page-about .about-partner__note p {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--muted);
}

@media (min-width: 760px) {
  .page-about .about-partner__notes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* ---------- 能力与认可 ---------- */
.page-about .about-proof {
  padding: 46px 0 48px;
  background: var(--paper);
}

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

.page-about .about-proof__item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 18px;
  background: var(--paper);
}

.page-about .about-proof__num {
  font-family: var(--font-mono);
  font-size: clamp(30px, 6vw, 46px);
  line-height: 1;
  letter-spacing: -0.035em;
  color: var(--ink);
}

.page-about .about-proof__num small {
  font-size: 0.4em;
  letter-spacing: 0;
  color: var(--muted);
}

.page-about .about-proof__label {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
}

.page-about .about-proof__honor {
  margin: 26px 0 0;
  padding: 16px 18px;
  border-left: 4px solid var(--lime);
  background: var(--aqua-soft);
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
}

@media (min-width: 880px) {
  .page-about .about-proof__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 轻盈上场 + CTA ---------- */
.page-about .about-name {
  padding: 46px 0 0;
  background: var(--paper);
}

.page-about .about-name__body {
  max-width: 38em;
  margin-top: 16px;
}

.page-about .about-name__body p {
  margin: 0 0 2px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
}

.page-about .about-cta {
  margin-top: 40px;
  padding: 34px 22px 38px;
  background: var(--ink);
  color: var(--paper);
  position: relative;
}

.page-about .about-cta::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--lime) 0%, var(--lime) 20%, var(--grid) 20%, var(--grid) 100%);
}

.page-about .about-cta__title {
  margin: 0;
  font-size: clamp(21px, 3.4vw, 30px);
  line-height: 1.25;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-cta__text {
  margin: 12px 0 0;
  max-width: 34em;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(246, 250, 251, 0.76);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

@media (min-width: 900px) {
  .page-about .about-name__inner {
    display: grid;
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    column-gap: 48px;
    align-items: start;
  }

  .page-about .about-name__inner > .eyebrow {
    grid-column: 1;
  }

  .page-about .about-name__inner > h2 {
    grid-column: 1;
  }

  .page-about .about-name__body {
    grid-column: 2;
    grid-row: 1 / 3;
    margin-top: 6px;
  }

  .page-about .about-cta {
    grid-column: 1 / -1;
    margin-top: 48px;
    padding: 40px 36px 44px;
  }
}

/* ---------- 动效收敛 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .team-lane {
    transition: none;
  }

  .page-about .team-lane:hover,
  .page-about .team-lane:focus-within {
    transform: none;
  }

  .page-about .season-index__list a {
    transition: none;
  }
}