.page-about {
  --about-rule: 1px solid var(--paper-line);
  background: var(--paper-cream);
  color: var(--brown-black);
}

.page-about .about-crumb {
  padding-top: clamp(16px, 2.6vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  background: linear-gradient(180deg, var(--cream-soft) 0%, var(--paper-cream) 84%);
  padding: clamp(20px, 3vw, 36px) 0 clamp(38px, 6vw, 76px);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  align-items: start;
}

.page-about .about-hero__body .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.16em;
  color: var(--apricot-deep);
  text-transform: uppercase;
}

.page-about .about-hero__body .eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  border-radius: 2px;
  background: var(--apricot);
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 5.4vw, 60px);
  line-height: 1.16;
  letter-spacing: -0.015em;
  max-width: 17ch;
}

.page-about .about-hero__lead {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  font-size: var(--fs-body);
  line-height: 1.8;
  max-width: 60ch;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .about-hero__facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(128px, 1fr));
  gap: 1px;
  margin: clamp(24px, 4vw, 36px) 0 0;
  background: var(--paper-line);
  border: var(--about-rule);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .about-hero__facts > div {
  background: var(--card-white);
  padding: 14px 16px;
}

.page-about .about-hero__facts dt {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.page-about .about-hero__facts dd {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 2.4vw, 26px);
  color: var(--ink-teal);
}

.page-about .about-hero__figure {
  margin: 0;
  padding: 10px;
  background: var(--card-white);
  border: var(--about-rule);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-float);
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: calc(var(--radius-xl) - 10px);
  object-fit: cover;
}

.page-about .about-hero__cap {
  margin: 10px 6px 4px;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

/* ---------- 通用章节头 ---------- */
.page-about .section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(12px, 2vw, 28px);
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-about .section-index {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.16em;
  color: var(--apricot-deep);
}

.page-about .section-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-h2);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-about .section-lead {
  margin: 0;
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--text-muted);
  max-width: 52ch;
}

/* ---------- 时间线 ---------- */
.page-about .about-timeline {
  padding: clamp(44px, 6vw, 84px) 0;
  background: linear-gradient(180deg, rgba(242, 154, 61, 0.09) 0%, rgba(242, 154, 61, 0) 46%);
}

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

.page-about .about-timeline__rail-label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.16em;
  color: var(--text-muted);
  text-transform: uppercase;
}

.page-about .scout-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 22px;
}

.page-about .scout-nav__link {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.1em;
  color: var(--text-muted);
  text-decoration: none;
  padding: 7px 11px;
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  transition: color 0.18s ease, background 0.18s ease;
}

.page-about .scout-nav__link:hover {
  color: var(--ink-teal);
  background: rgba(28, 124, 134, 0.1);
}

.page-about .scout-nav__link[aria-current="true"] {
  color: var(--ink-teal);
  border-left-color: var(--apricot);
  background: rgba(242, 154, 61, 0.16);
}

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

.page-about .tl-item {
  position: relative;
  padding: 0 0 clamp(26px, 4vw, 42px) clamp(20px, 3.4vw, 34px);
  border-left: 1px solid var(--paper-line);
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 7px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--apricot);
  box-shadow: 0 0 0 4px var(--paper-cream);
  transition: background 0.18s ease;
}

.page-about .tl-item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .tl-item[aria-current="true"]::before {
  background: var(--lake-blue);
}

.page-about .tl-item[aria-current="true"] .tl-item__year {
  color: var(--lake-blue);
}

.page-about .tl-item__year {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.14em;
  color: var(--apricot-deep);
  text-transform: uppercase;
}

.page-about .tl-item__card {
  margin-top: 10px;
  padding: clamp(16px, 2.4vw, 24px);
  background: var(--card-white);
  border: var(--about-rule);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.page-about .tl-item__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-h3);
  line-height: 1.36;
}

.page-about .tl-item__text {
  margin: 10px 0 0;
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--text-muted);
}

.page-about .tl-figure {
  list-style: none;
  margin: 0 0 clamp(26px, 4vw, 42px);
}

.page-about .about-tl-figure {
  margin: 0;
  overflow: hidden;
  border: var(--about-rule);
  border-radius: var(--radius-lg);
  background: var(--card-white);
}

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

.page-about .about-tl-figure__cap {
  padding: 10px 16px 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.06em;
  color: var(--text-muted);
  border-top: var(--about-rule);
}

/* ---------- 内容与校对 ---------- */
.page-about .about-craft {
  padding: clamp(44px, 6vw, 84px) 0;
  background: var(--cream-soft);
  border-top: var(--about-rule);
  border-bottom: var(--about-rule);
}

.page-about .about-craft__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
}

.page-about .craft-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--paper-line);
  border: var(--about-rule);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-about .craft-step {
  position: relative;
  background: var(--card-white);
  padding: clamp(18px, 2.6vw, 26px);
  padding-left: clamp(52px, 6vw, 68px);
}

.page-about .craft-step__no {
  position: absolute;
  left: clamp(16px, 2.2vw, 22px);
  top: clamp(18px, 2.6vw, 26px);
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.08em;
  color: var(--lake-blue);
}

.page-about .craft-step__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-h3);
  line-height: 1.32;
}

.page-about .craft-step__text {
  margin: 8px 0 0;
  font-size: var(--fs-body);
  line-height: 1.76;
  color: var(--text-muted);
}

.page-about .craft-card {
  align-self: start;
  padding: clamp(20px, 3vw, 30px);
  background: var(--ink-teal);
  color: var(--paper-cream);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-float);
}

.page-about .craft-card__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.16em;
  color: var(--warm-sand);
  text-transform: uppercase;
}

.page-about .craft-card__value {
  margin: 8px 0 20px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 3.4vw, 38px);
  line-height: 1.2;
  color: var(--card-white);
}

.page-about .craft-card__list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
}

.page-about .craft-card__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 0;
  border-top: 1px solid rgba(255, 246, 232, 0.18);
  font-size: var(--fs-small);
}

.page-about .craft-card__list li:last-child {
  border-bottom: 1px solid rgba(255, 246, 232, 0.18);
}

.page-about .craft-card__list span {
  color: rgba(255, 246, 232, 0.72);
}

.page-about .craft-card__list strong {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.04em;
  color: var(--card-white);
  font-weight: 600;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  padding: clamp(46px, 6vw, 88px) 0;
  background: var(--ink-teal);
  color: var(--paper-cream);
}

.page-about .about-team .section-index {
  color: var(--warm-sand);
}

.page-about .about-team .section-title {
  color: var(--card-white);
}

.page-about .about-team .section-lead {
  color: rgba(255, 246, 232, 0.78);
}

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

.page-about .team-card {
  position: relative;
  padding: clamp(18px, 2.6vw, 26px);
  background: rgba(255, 246, 232, 0.06);
  border: 1px solid rgba(255, 246, 232, 0.16);
  border-radius: var(--radius-lg);
  transition: background 0.2s ease, transform 0.2s ease;
}

.page-about .team-card:hover,
.page-about .team-card:focus-within {
  background: rgba(255, 246, 232, 0.11);
  transform: translateY(-3px);
}

.page-about .team-card__no {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.18em;
  color: var(--apricot);
}

.page-about .team-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-h3);
  line-height: 1.32;
  color: var(--card-white);
}

.page-about .team-card__text {
  margin: 10px 0 0;
  font-size: var(--fs-body);
  line-height: 1.74;
  color: rgba(255, 246, 232, 0.82);
}

.page-about .team-card__more {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.24s ease;
}

.page-about .team-card__more > span {
  overflow: hidden;
  display: block;
  font-size: var(--fs-small);
  line-height: 1.7;
  color: var(--warm-sand);
}

.page-about .team-card:hover .team-card__more,
.page-about .team-card:focus-within .team-card__more {
  grid-template-rows: 1fr;
}

.page-about .team-card:hover .team-card__more > span,
.page-about .team-card:focus-within .team-card__more > span {
  padding-top: 12px;
}

.page-about .about-team__figure {
  margin: clamp(26px, 4vw, 40px) 0 0;
  padding: 10px;
  background: rgba(255, 246, 232, 0.05);
  border: 1px solid rgba(255, 246, 232, 0.16);
  border-radius: var(--radius-xl);
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: calc(var(--radius-xl) - 10px);
}

.page-about .about-team__cap {
  margin: 10px 6px 2px;
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.08em;
  color: rgba(255, 246, 232, 0.62);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  padding: clamp(44px, 6vw, 80px) 0;
  background: var(--warm-sand);
}

.page-about .about-partners .section-index {
  color: var(--lake-deep);
}

.page-about .about-partners .section-title {
  color: var(--brown-black);
}

.page-about .about-partners .section-lead {
  color: #5C4A34;
}

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

.page-about .partner-stat {
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--card-white);
  border: var(--about-rule);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.page-about .partner-stat__num {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 3.6vw, 36px);
  line-height: 1.15;
  color: var(--lake-deep);
}

.page-about .partner-stat__label {
  margin: 10px 0 0;
  font-size: var(--fs-small);
  line-height: 1.7;
  color: var(--text-muted);
}

.page-about .about-partners__note {
  margin-top: 18px;
  padding: clamp(16px, 2.4vw, 24px);
  background: rgba(255, 255, 255, 0.55);
  border-left: 3px solid var(--lake-blue);
  border-radius: var(--radius-md);
}

.page-about .about-partners__note p {
  margin: 0;
  font-size: var(--fs-body);
  line-height: 1.78;
  color: var(--brown-black);
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  padding: clamp(44px, 6vw, 84px) 0 clamp(48px, 7vw, 92px);
  background: linear-gradient(180deg, var(--paper-cream) 0%, var(--cream-soft) 100%);
}

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

.page-about .next-link {
  display: grid;
  gap: 6px;
  padding: clamp(18px, 2.6vw, 24px);
  background: var(--card-white);
  border: var(--about-rule);
  border-radius: var(--radius-lg);
  text-decoration: none;
  color: inherit;
  box-shadow: var(--shadow-card);
  transition: border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

.page-about .next-link:hover,
.page-about .next-link:focus-visible {
  border-color: var(--apricot);
  transform: translateY(-3px);
  box-shadow: var(--shadow-float);
}

.page-about .next-link__tag {
  font-family: var(--font-mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.14em;
  color: var(--apricot-deep);
}

.page-about .next-link__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--fs-h3);
  line-height: 1.32;
  color: var(--brown-black);
}

.page-about .next-link__text {
  font-size: var(--fs-small);
  line-height: 1.72;
  color: var(--text-muted);
}

.page-about .about-next__foot {
  margin-top: clamp(24px, 4vw, 36px);
  display: flex;
  justify-content: flex-start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .team-grid,
  .page-about .partner-grid,
  .page-about .next-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .section-head {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }

  .page-about .about-timeline__body {
    display: grid;
    grid-template-columns: 118px minmax(0, 1fr);
    gap: clamp(24px, 4vw, 56px);
    align-items: start;
  }

  .page-about .about-timeline__rail {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-about .scout-nav {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
    margin-bottom: 0;
  }

  .page-about .about-craft__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

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

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

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

@media (min-width: 1180px) {
  .page-about .about-hero__title {
    max-width: 15ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .team-card,
  .page-about .next-link,
  .page-about .team-card__more,
  .page-about .scout-nav__link {
    transition: none;
  }

  .page-about .team-card:hover,
  .page-about .team-card:focus-within,
  .page-about .next-link:hover,
  .page-about .next-link:focus-visible {
    transform: none;
  }
}
<<<END>>>