.page-about {
  --about-gap: clamp(52px, 8vw, 108px);
  --about-rail: 2px;
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-block: clamp(28px, 4vw, 48px) clamp(48px, 7vw, 92px);
}

.page-about .about-hero .breadcrumb {
  margin-bottom: clamp(28px, 4vw, 48px);
}

.page-about .about-hero__grid {
  display: grid;
  gap: clamp(32px, 5vw, 64px);
  grid-template-columns: 1fr;
}

.page-about .about-hero__title {
  margin: 18px 0 0;
  font-size: clamp(34px, 7vw, 68px);
  font-weight: 200;
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-hero__title br {
  display: none;
}

.page-about .about-hero__text {
  margin: 24px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: rgba(244, 247, 245, 0.78);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

/* 规模数字带 */
.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--sharp);
  overflow: hidden;
}

.page-about .about-figures__item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 20px 18px 22px;
  background: var(--panel);
}

.page-about .about-figures__key {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--note);
}

.page-about .about-figures__val {
  margin: 6px 0 0;
  font-size: clamp(30px, 6vw, 46px);
  line-height: 1;
  color: var(--grass);
}

.page-about .about-figures__unit {
  margin: 0;
  font-size: 12.5px;
  color: var(--note);
}

/* ---------- 通用章节 ---------- */
.page-about .section {
  padding-block: var(--about-gap);
}

.page-about .chapter-index {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--note);
}

.page-about .chapter-index .num {
  color: var(--orange);
}

.page-about h2 {
  margin: 18px 0 0;
  font-size: clamp(26px, 4.4vw, 46px);
  font-weight: 200;
  line-height: 1.2;
  letter-spacing: -0.005em;
}

.page-about .note {
  display: block;
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--note);
}

/* ---------- 起点 ---------- */
.page-about .about-origin {
  border-top: 1px solid var(--line);
}

.page-about .about-origin__grid {
  display: grid;
  gap: clamp(32px, 5vw, 66px);
  grid-template-columns: 1fr;
}

.page-about .about-origin__body p {
  margin: 22px 0 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(244, 247, 245, 0.78);
}

.page-about .about-origin__points {
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-about .about-origin__points li {
  position: relative;
  padding: 14px 0 14px 22px;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(244, 247, 245, 0.86);
}

.page-about .about-origin__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  width: 10px;
  height: 2px;
  background: var(--grass);
}

.page-about .about-origin__points .num {
  color: var(--grass);
  font-size: 17px;
}

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

/* ---------- 三条主线 ---------- */
.page-about .about-lines {
  background:
    linear-gradient(180deg, rgba(30, 92, 67, 0.28) 0%, rgba(30, 92, 67, 0) 68%),
    repeating-linear-gradient(
      180deg,
      rgba(244, 247, 245, 0.028) 0 22px,
      rgba(244, 247, 245, 0) 22px 44px
    );
  border-block: 1px solid var(--line);
}

.page-about .about-lines__title {
  max-width: 22ch;
}

.page-about .about-lines__intro {
  margin: 20px 0 0;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(244, 247, 245, 0.76);
}

.page-about .about-lines__grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(32px, 5vw, 56px);
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--sharp);
  overflow: hidden;
}

.page-about .line-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(24px, 3.4vw, 36px);
  background: var(--ink);
  border-top: 3px solid var(--mid);
  transition: background-color 180ms ease, border-color 180ms ease;
}

.page-about .line-card--away { border-top-color: var(--away); }
.page-about .line-card--yellow { border-top-color: var(--yellow); }
.page-about .line-card--home { border-top-color: var(--home); }

.page-about .line-card:hover,
.page-about .line-card:focus-within {
  background: var(--panel);
}

.page-about .line-card__idx {
  font-size: 30px;
  line-height: 1;
  color: var(--mid);
}

.page-about .line-card--away .line-card__idx { color: var(--away); }
.page-about .line-card--yellow .line-card__idx { color: var(--yellow); }
.page-about .line-card--home .line-card__idx { color: var(--home); }

.page-about .line-card__title {
  margin: 0;
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 300;
  line-height: 1.35;
}

.page-about .line-card__text {
  margin: 0;
  flex: 1 1 auto;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(244, 247, 245, 0.76);
}

.page-about .line-card .btn--quiet {
  align-self: flex-start;
  color: var(--grass);
  border-bottom: 1px solid rgba(79, 191, 122, 0.4);
}

.page-about .line-card .btn--quiet:hover {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ---------- 团队 ---------- */
.page-about .about-team__title {
  max-width: 20ch;
}

.page-about .about-team__intro {
  margin: 20px 0 0;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(244, 247, 245, 0.76);
}

.page-about .squad-grid {
  display: grid;
  gap: 18px;
  margin-top: clamp(30px, 4.5vw, 52px);
  grid-template-columns: 1fr;
}

.page-about .squad {
  position: relative;
  padding: 24px 22px 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--sharp);
  transition: transform 180ms ease, border-color 180ms ease;
}

.page-about .squad::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 42px;
  background-image:
    repeating-linear-gradient(90deg, var(--hair) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(0deg, var(--hair) 0 1px, transparent 1px 21px);
  pointer-events: none;
}

.page-about .squad:hover,
.page-about .squad:focus-visible {
  transform: translateY(-2px);
  border-color: var(--line-2);
  outline: none;
}

.page-about .squad__city {
  position: relative;
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-about .squad__title {
  position: relative;
  margin: 14px 0 0;
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 300;
  line-height: 1.4;
}

.page-about .squad__text {
  position: relative;
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(244, 247, 245, 0.76);
}

.page-about .squad__more {
  position: relative;
  max-height: 0;
  margin: 0;
  overflow: hidden;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--grass);
  opacity: 0;
  transition: max-height 220ms ease, opacity 220ms ease, margin-top 220ms ease;
}

.page-about .squad:hover .squad__more,
.page-about .squad:focus-within .squad__more,
.page-about .squad:focus .squad__more {
  max-height: 120px;
  margin-top: 14px;
  opacity: 1;
}

/* ---------- 流程 ---------- */
.page-about .about-flow {
  border-top: 1px solid var(--line);
}

.page-about .about-flow__title {
  max-width: 20ch;
}

.page-about .about-flow__intro {
  margin: 20px 0 0;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(244, 247, 245, 0.76);
}

.page-about .about-flow__media {
  margin: clamp(28px, 4vw, 46px) 0 0;
}

.page-about .flow {
  display: grid;
  gap: 1px;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--sharp);
  overflow: hidden;
}

.page-about .flow__step {
  position: relative;
  padding: 26px 22px 24px;
  background: var(--ink);
  transition: background-color 180ms ease;
}

.page-about .flow__step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--mid);
  transition: background-color 180ms ease;
}

.page-about .flow__step:hover,
.page-about .flow__step:focus-visible {
  background: var(--panel);
  outline: none;
}

.page-about .flow__step:hover::before,
.page-about .flow__step:focus-visible::before {
  background: var(--orange);
}

.page-about .flow__idx {
  font-size: 24px;
  line-height: 1;
  color: var(--note);
}

.page-about .flow__name {
  margin: 12px 0 0;
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 400;
  line-height: 1.4;
}

.page-about .flow__desc {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(244, 247, 245, 0.76);
}

.page-about .flow__hint {
  display: block;
  max-height: 0;
  margin: 0;
  overflow: hidden;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--yellow);
  opacity: 0;
  transition: max-height 220ms ease, opacity 220ms ease, margin-top 220ms ease;
}

.page-about .flow__step:hover .flow__hint,
.page-about .flow__step:focus-visible .flow__hint {
  max-height: 80px;
  margin-top: 14px;
  opacity: 1;
}

/* ---------- 青训 ---------- */
.page-about .about-youth {
  background:
    linear-gradient(180deg, rgba(53, 196, 216, 0.07) 0%, rgba(53, 196, 216, 0) 60%),
    var(--ink-deep);
  border-block: 1px solid var(--line);
}

.page-about .about-youth__grid {
  display: grid;
  gap: clamp(30px, 4.5vw, 58px);
  grid-template-columns: 1fr;
}

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

.page-about .about-youth__body p {
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(244, 247, 245, 0.78);
}

.page-about .youth-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1px;
  margin: 30px 0 0;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--sharp);
  overflow: hidden;
}

.page-about .youth-stats__item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 16px;
  background: var(--panel);
}

.page-about .youth-stats__item dt {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--note);
}

.page-about .youth-stats__item dd {
  margin: 0;
  font-size: 24px;
  line-height: 1.1;
  color: var(--away);
}

/* ---------- 合作 ---------- */
.page-about .about-partners__title {
  max-width: 20ch;
}

.page-about .about-partners__intro {
  margin: 20px 0 0;
  max-width: 66ch;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(244, 247, 245, 0.76);
}

.page-about .partner-grid {
  display: grid;
  gap: 1px;
  margin-top: clamp(30px, 4.5vw, 50px);
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--sharp);
  overflow: hidden;
  grid-template-columns: 1fr;
}

.page-about .partner {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 24px 20px;
  background: var(--panel);
}

.page-about .partner--award {
  background: var(--ink);
  border-left: 3px solid var(--orange);
}

.page-about .partner__count {
  font-size: clamp(28px, 5vw, 38px);
  line-height: 1;
  color: var(--grass);
}

.page-about .partner--award .partner__count {
  color: var(--orange);
}

.page-about .partner__label {
  font-size: 15px;
  color: var(--paper);
}

.page-about .partner__text {
  margin: 4px 0 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--note);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  border-top: 1px solid var(--line);
}

.page-about .about-timeline__title {
  max-width: 24ch;
  margin-bottom: clamp(30px, 4.5vw, 54px);
}

.page-about .tl {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .tl__row {
  position: relative;
  padding: 0 0 clamp(30px, 4vw, 44px) 36px;
}

.page-about .tl__row::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--orange);
  box-sizing: border-box;
}

.page-about .tl__row--done::before {
  background: var(--grass);
  border-color: var(--grass);
}

.page-about .tl__row::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 27px;
  bottom: 0;
  width: 2px;
  background: var(--line);
}

.page-about .tl__row:last-child::after {
  display: none;
}

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

.page-about .tl__meta {
  display: flex;
}

.page-about .tl__year {
  font-size: 15px;
  letter-spacing: 0.08em;
  color: var(--grass);
}

.page-about .tl__row:not(.tl__row--done) .tl__year {
  color: var(--orange);
}

.page-about .tl__title {
  margin: 10px 0 0;
  font-size: clamp(18px, 2.3vw, 23px);
  font-weight: 300;
  line-height: 1.4;
}

.page-about .tl__text {
  margin: 10px 0 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(244, 247, 245, 0.74);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  padding-bottom: clamp(60px, 9vw, 120px);
}

.page-about .about-cta__panel {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  grid-template-columns: 1fr;
  padding: clamp(28px, 4.6vw, 54px);
  background:
    linear-gradient(135deg, rgba(255, 106, 26, 0.14) 0%, rgba(255, 106, 26, 0) 52%),
    var(--panel);
  border: 1px solid var(--line-2);
  border-radius: var(--sharp);
}

.page-about .about-cta__title {
  margin: 18px 0 0;
  font-size: clamp(24px, 3.6vw, 38px);
  font-weight: 200;
  line-height: 1.24;
}

.page-about .about-cta__body p {
  margin: 20px 0 0;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(244, 247, 245, 0.8);
}

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

.page-about .about-cta__contact {
  align-self: start;
  margin: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-cta__contact .contact-list__item {
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
}

/* ---------- 媒体容器微调 ---------- */
.page-about .media {
  margin: 0;
}

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

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
  }

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

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-about .about-lines__grid,
  .page-about .squad-grid,
  .page-about .flow,
  .page-about .partner-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .flow__step {
    padding: 30px 24px 28px;
  }

  .page-about .about-youth__grid {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
    align-items: center;
  }

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

  .page-about .tl__row {
    padding-left: 44px;
  }

  .page-about .about-cta__panel {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero__title br {
    display: block;
  }

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

  .page-about .partner-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-about .tl__row {
    display: grid;
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 0 24px;
    padding-left: 44px;
  }

  .page-about .tl__meta {
    justify-content: flex-start;
  }

  .page-about .tl__year {
    font-size: 16px;
  }
}
<<<END>>>
</main>