.page-about .about-crumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 26px;
  font-size: 13px;
  color: var(--slate);
}

.page-about .about-crumbs a {
  color: var(--slate);
  text-decoration: none;
  transition: color .25s ease;
}

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

.page-about .about-crumbs__sep {
  color: var(--line);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-bottom: 8px;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  padding-top: 26px;
  padding-bottom: 34px;
}

.page-about .about-hero__aside {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-left: 16px;
  border-left: 2px solid var(--orange);
}

.page-about .about-hero__meta {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
  letter-spacing: .03em;
}

.page-about .about-hero__title {
  margin: 0 0 20px;
  font-size: clamp(32px, 8.4vw, 60px);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--ice);
}

.page-about .about-hl {
  display: inline-block;
  background: var(--orange);
  color: var(--night-deep);
  padding: 0 .1em;
  transform: skewX(-4deg);
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 62ch;
  color: var(--ice);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px 20px;
  margin-top: 30px;
}

.page-about .about-hero__stats .stat {
  padding-top: 10px;
  border-top: 2px solid var(--line);
}

.page-about .about-hero__stats .stat__num {
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

.page-about .about-hero__media {
  padding-bottom: 10px;
}

/* ---------- 通用章节头 ---------- */
.page-about .about-journey__head,
.page-about .about-partners__head {
  align-items: start;
  gap: 24px;
}

.page-about .about-journey__note,
.page-about .about-partners__note {
  margin: 0;
  max-width: 54ch;
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 38px 0 0;
  padding: 0;
}

.page-about .about-timeline__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: 22px 0;
  border-top: 1.5px solid var(--line);
}

.page-about .about-timeline__item:last-child {
  border-bottom: 1.5px solid var(--line);
}

.page-about .about-timeline__year {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

.page-about .about-timeline__body h3 {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 700;
  color: var(--ice);
  letter-spacing: -0.01em;
}

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

/* ---------- 团队 ---------- */
.page-about .about-team-section__head {
  max-width: 60ch;
}

.page-about .about-team-section__lede {
  margin: 16px 0 0;
  color: var(--ice);
}

.page-about .about-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: 34px;
}

.page-about .about-team__card {
  border: 2px solid var(--line);
  border-radius: var(--radius);
  background: var(--night);
  box-shadow: var(--shadow);
}

.page-about .about-team__card summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  display: grid;
  gap: 6px;
  padding: 20px 46px 20px 18px;
}

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

.page-about .about-team__card summary::after {
  content: "+";
  position: absolute;
  top: 18px;
  right: 16px;
  font-size: 20px;
  line-height: 1;
  color: var(--orange);
  transition: transform .3s ease;
}

.page-about .about-team__card[open] summary::after {
  content: "−";
}

.page-about .about-team__card summary:hover::after {
  transform: translateY(2px);
}

.page-about .about-team__num {
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .about-team__name {
  font-size: 20px;
  font-weight: 700;
  color: var(--ice);
  letter-spacing: -0.01em;
}

.page-about .about-team__duty {
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
}

.page-about .about-team__detail {
  padding: 14px 18px 20px;
  border-top: 1px solid var(--line);
}

.page-about .about-team__detail p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ice);
}

.page-about .about-team__detail ul {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-about .about-team__detail li {
  position: relative;
  padding-left: 14px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
}

.page-about .about-team__detail li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 6px;
  height: 6px;
  background: var(--cyan);
}

/* ---------- 校验 ---------- */
.page-about .about-check__grid {
  gap: 34px;
  align-items: start;
}

.page-about .about-check__text {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--slate);
}

.page-about .about-check__media {
  margin: 28px 0 0;
}

.page-about .about-flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  overflow: hidden;
}

.page-about .about-flow__step {
  position: relative;
  background: var(--night);
  background-image:
    linear-gradient(rgba(53, 208, 186, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(53, 208, 186, .05) 1px, transparent 1px);
  background-size: 28px 28px;
  padding: 26px 20px 24px;
}

.page-about .about-flow__step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 20px;
  width: 34px;
  height: 3px;
  background: var(--orange);
}

.page-about .about-flow__idx {
  display: block;
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .about-flow__step h3 {
  margin: 10px 0 8px;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ice);
}

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

/* ---------- 陪伴计划 ---------- */
.page-about .about-companion__grid {
  gap: 34px;
  align-items: start;
}

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

.page-about .about-companion__body .lede {
  margin: 16px 0 0;
  color: var(--ice);
}

.page-about .about-steps {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-about .about-steps__item {
  position: relative;
  padding-left: 20px;
  border-left: 2px solid var(--line);
}

.page-about .about-steps__item:hover {
  border-left-color: var(--orange);
}

.page-about .about-steps__idx {
  display: block;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--amber);
}

.page-about .about-steps__item h3 {
  margin: 8px 0 8px;
  font-size: 19px;
  font-weight: 700;
  color: var(--ice);
  letter-spacing: -0.01em;
}

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

.page-about .about-companion__tail {
  margin: 28px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate);
}

.page-about .about-companion__tail a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 208, 186, .4);
}

.page-about .about-companion__tail a:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 合作与荣誉 ---------- */
.page-about .about-honor {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
}

.page-about .about-honor__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 20px 0;
  border-top: 1.5px solid var(--line);
}

.page-about .about-honor__item:last-child {
  border-bottom: 1.5px solid var(--line);
}

.page-about .about-honor__item:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.page-about .about-honor__label {
  font-size: 17px;
  font-weight: 700;
  color: var(--ice);
  letter-spacing: -0.01em;
}

.page-about .about-honor__text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-about .about-honor__more {
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
  transition: color .25s ease, opacity .25s ease;
}

.page-about .about-honor__more a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 208, 186, .4);
}

.page-about .about-honor__more a:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

@media (hover: hover) {
  .page-about .about-honor__more {
    opacity: 0;
  }

  .page-about .about-honor__item:hover .about-honor__more,
  .page-about .about-honor__item:focus-within .about-honor__more,
  .page-about .about-honor__item:focus .about-honor__more {
    opacity: 1;
  }
}

.page-about .about-partners__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 结尾 ---------- */
.page-about .about-cta__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  padding: 34px 24px;
  border: 2px solid var(--line);
  border-radius: var(--radius);
  background: var(--pitch);
  box-shadow: var(--shadow-hard);
}

.page-about .about-cta__text .lede {
  margin: 12px 0 0;
  color: var(--ice);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-self: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-about .about-hero__grid {
    grid-template-columns: 3fr 9fr;
    gap: 42px;
    padding-top: 46px;
    padding-bottom: 46px;
    align-items: start;
  }

  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, 1fr);
    gap: 18px 24px;
  }

  .page-about .about-timeline__item {
    grid-template-columns: 130px 1fr;
    gap: 34px;
    padding: 30px 0;
  }

  .page-about .about-timeline__year {
    font-size: 21px;
  }

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

  .page-about .about-honor__item {
    grid-template-columns: 210px 1fr;
    align-items: baseline;
    gap: 10px 28px;
  }

  .page-about .about-honor__more {
    grid-column: 2;
  }

  .page-about .about-cta__inner {
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: 42px 40px;
  }
}

@media (min-width: 900px) {
  .page-about .about-check__grid,
  .page-about .about-companion__grid {
    grid-template-columns: 5fr 7fr;
    gap: 48px;
  }

  .page-about .about-companion__media {
    grid-column: 1;
  }

  .page-about .about-companion__body {
    grid-column: 2;
  }

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

@media (min-width: 1100px) {
  .page-about .about-team {
    grid-template-columns: repeat(4, 1fr);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-hl,
  .page-about .about-team__card summary::after,
  .page-about .about-honor__more,
  .page-about .about-crumbs a {
    transition: none;
    transform: none;
  }

  .page-about .about-hl {
    transform: none;
  }
}