.page-about {
  --about-gap: 20px;
  --about-soft-line: rgba(16, 35, 63, 0.12);
  --about-ink-line: rgba(242, 244, 247, 0.16);
  --about-ink-muted: rgba(242, 244, 247, 0.66);
  display: block;
  background: var(--paper);
  color: var(--text);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

.page-about p {
  margin: 0 0 14px;
  line-height: 1.85;
  font-size: 17px;
}

.page-about h2,
.page-about h3 {
  font-family: var(--font-display);
  color: var(--ink);
  margin: 0;
}

.page-about h2 {
  font-size: 26px;
  font-weight: 800;
  line-height: 1.3;
}

.page-about h3 {
  font-size: 19px;
  font-weight: 700;
  line-height: 1.45;
}

.page-about strong.mono {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--orange);
  font-size: 1.02em;
}

/* ---------- 顶部 ---------- */
.page-about .about-hero {
  padding: 28px 0 56px;
  background: linear-gradient(178deg, var(--paper) 0%, var(--paper) 62%, var(--mist) 100%);
}

.page-about .about-hero .breadcrumb {
  margin-bottom: 32px;
}

.page-about .about-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: end;
}

.page-about .about-hero__lead h1 {
  font-family: var(--font-display);
  font-size: clamp(32px, 8vw, 44px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: 0;
  color: var(--ink);
  margin: 12px 0 18px;
}

.page-about .about-hero__lead .lede {
  color: var(--text);
  font-size: 17px;
  line-height: 1.9;
  max-width: 36em;
  margin-bottom: 0;
}

.page-about .about-hero__facts {
  margin: 0;
  padding: 6px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  background: var(--ink);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.page-about .about-hero__fact {
  background: rgba(242, 244, 247, 0.06);
  border-radius: 11px;
  padding: 14px 14px 16px;
}

.page-about .about-hero__fact dt {
  font-size: 13px;
  line-height: 1.5;
  color: var(--about-ink-muted);
  letter-spacing: 0.02em;
}

.page-about .about-hero__fact dd {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.15;
  color: var(--orange);
  letter-spacing: 0.01em;
}

/* ---------- 通用栏目标题 ---------- */
.page-about .about-head {
  max-width: 44rem;
  margin-bottom: 32px;
}

.page-about .about-head h2 {
  margin: 10px 0 12px;
}

.page-about .about-head p {
  color: var(--text-muted);
  margin-bottom: 0;
  max-width: 38em;
}

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

.page-about .about-head--ink p {
  color: var(--about-ink-muted);
}

/* ---------- 理念区块 ---------- */
.page-about .about-origin {
  padding: 56px 0;
  background: var(--paper);
}

.page-about .about-scenes {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.page-about .about-scene {
  position: relative;
  padding: 24px 22px 22px;
  background: var(--paper);
  border: 1px solid var(--about-soft-line);
  border-radius: var(--radius);
  border-top: 3px solid var(--orange);
}

.page-about .about-scene__coord {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--text-muted);
  margin: 0 0 10px;
}

.page-about .about-scene h3 {
  margin-bottom: 10px;
}

.page-about .about-scene p:last-child {
  margin-bottom: 0;
  color: var(--text-muted);
  font-size: 16px;
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  background: var(--ink);
  color: var(--ink-text);
  padding: 56px 0 64px;
}

.page-about .about-timeline__photo {
  margin: 0 0 44px;
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-timeline__photo .media-frame__caption {
  color: var(--about-ink-muted);
}

.page-about .about-axis {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .about-axis::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 24px;
  width: 2px;
  background: linear-gradient(180deg, var(--orange) 0%, rgba(242, 244, 247, 0.08) 100%);
}

.page-about .about-axis__item {
  position: relative;
  padding-left: 40px;
  padding-bottom: 38px;
}

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

.page-about .about-axis__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--ink-deep);
  border: 2px solid var(--orange);
  box-sizing: border-box;
}

.page-about .about-axis__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--orange);
  margin: 0 0 8px;
}

.page-about .about-axis__body h3 {
  color: var(--ink-text);
  margin-bottom: 8px;
}

.page-about .about-axis__body p {
  color: var(--about-ink-muted);
  font-size: 16px;
  margin-bottom: 0;
  max-width: 40em;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  background: var(--mist);
  padding: 56px 0;
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-about .about-team__copy h2 {
  margin: 10px 0 12px;
}

.page-about .about-team__copy > p:not(.eyebrow) {
  color: var(--text-muted);
  max-width: 38em;
  margin-bottom: 26px;
}

.page-about .about-roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .about-role {
  background: var(--paper);
  border-radius: var(--radius);
  border-left: 3px solid var(--ink-soft);
  padding: 18px 18px 16px;
}

.page-about .about-role__index {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
  margin: 0 0 8px;
}

.page-about .about-role h3 {
  font-size: 18px;
  margin-bottom: 8px;
}

.page-about .about-role p:last-child {
  margin-bottom: 0;
  font-size: 15.5px;
  color: var(--text-muted);
  line-height: 1.8;
}

.page-about .about-team__photo {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.page-about .about-team__photo .media-frame__caption {
  background: var(--paper);
  color: var(--text-muted);
}

/* ---------- 服务网络 ---------- */
.page-about .about-network {
  background: var(--paper);
  padding: 56px 0;
}

.page-about .about-network__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-about .about-network__copy h2 {
  margin: 10px 0 12px;
}

.page-about .about-network__copy > p {
  color: var(--text-muted);
  max-width: 38em;
}

.page-about .about-network__stats {
  list-style: none;
  margin: 22px 0 24px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-about .about-network__stats li {
  background: var(--orange-soft);
  border-radius: 12px;
  padding: 14px 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-about .about-network__num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--ink);
}

.page-about .about-network__label {
  font-size: 13.5px;
  line-height: 1.6;
  color: #7a4a25;
}

.page-about .about-network__note {
  color: var(--text-muted);
  font-size: 16px;
  margin-bottom: 0;
}

.page-about .about-network__photo {
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
}

/* ---------- 资质 ---------- */
.page-about .about-cred {
  background: var(--ink-deep);
  color: var(--ink-text);
  padding: 56px 0;
}

.page-about .about-cred .about-head h2 {
  color: var(--ink-text);
}

.page-about .about-cred .about-head p {
  color: var(--about-ink-muted);
}

.page-about .about-cred__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-ink-line);
  border: 1px solid var(--about-ink-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-cred__row {
  background: var(--ink-deep);
  padding: 20px 18px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.page-about .about-cred__year {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-about .about-cred__name {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink-text);
}

.page-about .about-cred__scope {
  font-size: 15px;
  line-height: 1.75;
  color: var(--about-ink-muted);
}

/* ---------- 结尾行动 ---------- */
.page-about .about-next {
  background: var(--paper);
  padding: 56px 0 64px;
  border-top: 1px solid var(--about-soft-line);
}

.page-about .about-next__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  align-items: center;
}

.page-about .about-next__copy h2 {
  margin: 10px 0 12px;
}

.page-about .about-next__copy p {
  color: var(--text-muted);
  max-width: 38em;
  margin-bottom: 0;
}

.page-about .about-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-next__actions .btn {
  flex: 1 1 auto;
  text-align: center;
  min-width: 140px;
}

/* ---------- 显现动效 ---------- */
@media (prefers-reduced-motion: no-preference) {
  .js .page-about .reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s ease, transform 0.5s ease;
  }

  .js .page-about .reveal.is-visible {
    opacity: 1;
    transform: none;
  }

  .js .page-about .about-scenes .about-scene:nth-child(2) {
    transition-delay: 0.07s;
  }

  .js .page-about .about-scenes .about-scene:nth-child(3) {
    transition-delay: 0.14s;
  }

  .js .page-about .about-axis__item:nth-child(2) { transition-delay: 0.06s; }
  .js .page-about .about-axis__item:nth-child(3) { transition-delay: 0.12s; }
  .js .page-about .about-axis__item:nth-child(4) { transition-delay: 0.18s; }
  .js .page-about .about-axis__item:nth-child(5) { transition-delay: 0.24s; }
}

/* ---------- 900px 以上 ---------- */
@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 36px 0 80px;
  }

  .page-about .about-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
  }

  .page-about .about-hero__lead h1 {
    font-size: clamp(44px, 4vw, 56px);
  }

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

  .page-about .about-origin,
  .page-about .about-team,
  .page-about .about-network,
  .page-about .about-cred,
  .page-about .about-timeline,
  .page-about .about-next {
    padding-top: 88px;
    padding-bottom: 88px;
  }

  .page-about .about-head {
    margin-bottom: 44px;
  }

  .page-about h2 {
    font-size: 32px;
  }

  .page-about .about-scenes {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 24px;
    align-items: start;
  }

  .page-about .about-scene:nth-child(1) {
    grid-column: 1 / span 5;
  }

  .page-about .about-scene:nth-child(2) {
    grid-column: 7 / span 6;
    margin-top: 44px;
  }

  .page-about .about-scene:nth-child(3) {
    grid-column: 2 / span 6;
    margin-top: 4px;
  }

  /* 时间轴：中央纵向轴线，左右交替 */
  .page-about .about-axis::before {
    left: 50%;
    top: 4px;
    bottom: 4px;
    margin-left: -1px;
  }

  .page-about .about-axis__item {
    width: calc(50% - 40px);
    padding-left: 0;
    padding-bottom: 52px;
  }

  .page-about .about-axis__item::before {
    top: 5px;
  }

  .page-about .about-axis__item:nth-child(odd) {
    margin-right: auto;
  }

  .page-about .about-axis__item:nth-child(odd)::before {
    left: auto;
    right: -48px;
  }

  .page-about .about-axis__item:nth-child(even) {
    margin-left: auto;
  }

  .page-about .about-axis__item:nth-child(even)::before {
    left: -48px;
  }

  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
  }

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

  .page-about .about-network__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: center;
  }

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

  .page-about .about-cred__row {
    grid-template-columns: 78px minmax(0, 1fr) minmax(0, 1.6fr);
    gap: 24px;
    align-items: baseline;
    padding: 24px 26px;
  }

  .page-about .about-next__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
  }

  .page-about .about-next__actions {
    justify-content: flex-end;
  }

  .page-about .about-next__actions .btn {
    flex: 0 0 auto;
  }
}

/* ---------- 1180px 以上 ---------- */
@media (min-width: 1180px) {
  .page-about .about-timeline__photo {
    margin-bottom: 56px;
  }

  .page-about .about-cred__row {
    grid-template-columns: 90px minmax(0, 1fr) minmax(0, 1.7fr);
    gap: 32px;
  }
}

/* ---------- 窄屏兜底 ---------- */
@media (max-width: 420px) {
  .page-about .about-hero__facts,
  .page-about .about-network__stats {
    grid-template-columns: 1fr;
  }

  .page-about .about-scene,
  .page-about .about-role {
    padding-left: 16px;
    padding-right: 16px;
  }
}
<<<END>>>