.page-about {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: clip;
}

.page-about .shell {
  box-sizing: border-box;
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.page-about .section {
  padding-block: clamp(48px, 7vw, 88px);
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-weight: 900;
  letter-spacing: 0.04em;
  line-height: 1.16;
  margin: 0;
  color: var(--ink);
}

.page-about .about-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--lake);
  margin: 0 0 16px;
}

.page-about .about-kicker::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--barley);
}

.page-about .about-kicker--light {
  color: var(--mist);
}

.page-about .about-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--saltgray);
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-about .about-crumbs a {
  color: var(--lake);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-fast) var(--ease);
}

.page-about .about-crumbs a:hover,
.page-about .about-crumbs a:focus-visible {
  border-bottom-color: var(--lake);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-block: clamp(28px, 4vw, 52px) clamp(32px, 5vw, 56px);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -14%;
  width: 68vmin;
  height: 68vmin;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(143, 189, 203, 0.34), rgba(143, 189, 203, 0) 70%);
  pointer-events: none;
}

.page-about .about-hero-copy {
  position: relative;
  max-width: 780px;
}

.page-about .about-h1 {
  font-size: clamp(30px, 5.2vw, 54px);
  line-height: 1.14;
  margin-bottom: 20px;
}

.page-about .about-lede {
  font-size: 17px;
  line-height: 1.78;
  color: var(--wind);
  margin: 0;
  max-width: 40em;
}

.page-about .about-figures {
  position: relative;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0;
  background: rgba(107, 74, 50, 0.16);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .about-figures li {
  background: var(--salt);
  padding: 18px 16px 20px;
}

.page-about .about-figure-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.8vw, 28px);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--lake);
}

.page-about .about-figure-label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--saltgray);
  letter-spacing: 0.04em;
}

.page-about .about-hero-banner {
  position: relative;
  margin: clamp(28px, 4vw, 48px) 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--mist);
}

.page-about .about-hero-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 20 / 7;
  object-fit: cover;
}

/* ---------- 起点与今天 ---------- */
.page-about .about-split {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-about .about-copy h2,
.page-about .about-upkeep-inner h2 {
  font-size: clamp(26px, 3.6vw, 36px);
  margin-bottom: 18px;
}

.page-about .about-copy p,
.page-about .about-copy-p {
  font-size: 17px;
  line-height: 1.8;
  color: var(--ink);
  margin: 0 0 18px;
  max-width: 40em;
}

.page-about .about-copy p:last-child,
.page-about .about-copy-p:last-of-type {
  margin-bottom: 0;
}

.page-about .about-points {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-points li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--wind);
}

.page-about .about-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 10px;
  height: 2px;
  border-radius: 2px;
  background: var(--ochre);
}

.page-about .about-photo {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--mist);
  box-shadow: 0 4px 18px rgba(34, 26, 20, 0.1);
}

.page-about .about-photo img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  background: linear-gradient(180deg, rgba(143, 189, 203, 0.24), rgba(143, 189, 203, 0.07));
  border-block: 1px solid rgba(107, 74, 50, 0.12);
}

.page-about .about-section-head {
  max-width: 720px;
  margin-bottom: clamp(24px, 3vw, 40px);
}

.page-about .about-section-head h2 {
  font-size: clamp(26px, 3.6vw, 36px);
}

.page-about .about-section-lede {
  font-size: 16.5px;
  line-height: 1.75;
  color: var(--wind);
  margin: 14px 0 0;
}

.page-about .about-team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-team-card {
  background: var(--salt);
  border: 1px solid rgba(107, 74, 50, 0.14);
  border-radius: var(--radius-md);
  padding: 22px 20px;
  box-shadow: 0 4px 10px rgba(34, 26, 20, 0.05);
  transition: transform var(--t-fast) var(--ease),
              box-shadow var(--t-mid) var(--ease),
              border-color var(--t-fast) var(--ease);
}

.page-about .about-team-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(34, 26, 20, 0.14);
  border-color: rgba(31, 111, 139, 0.5);
}

.page-about .about-team-role {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--lake);
  margin: 0 0 14px;
}

.page-about .about-team-count {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-about .about-team-text {
  font-size: 15px;
  line-height: 1.72;
  color: var(--wind);
  margin: 0 0 16px;
}

.page-about .about-team-duty {
  display: block;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--saltgray);
  border-left: 2px solid var(--mist);
  padding-left: 12px;
  transition: color var(--t-mid) var(--ease), border-color var(--t-mid) var(--ease);
}

.page-about .about-team-card:hover .about-team-duty {
  color: var(--lake);
  border-left-color: var(--ochre);
}

/* ---------- 内容维护 ---------- */
.page-about .about-upkeep-inner {
  max-width: 700px;
}

.page-about .about-cadence {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  border-top: 1px solid rgba(107, 74, 50, 0.18);
}

.page-about .about-cadence li {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(107, 74, 50, 0.18);
}

.page-about .about-cadence-key {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--ochre);
}

.page-about .about-cadence-val {
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--wind);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  position: relative;
  background: var(--night);
  color: var(--salt);
  padding-block: clamp(48px, 7vw, 84px) clamp(36px, 5vw, 56px);
  overflow: hidden;
}

.page-about .about-timeline .shell {
  position: relative;
  z-index: 2;
}

.page-about .about-timeline-title {
  color: var(--salt);
  font-size: clamp(26px, 3.6vw, 36px);
  max-width: 16em;
}

.page-about .about-timeline-wrap {
  position: relative;
  margin-top: clamp(24px, 3vw, 36px);
}

.page-about .about-road {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.28;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), rgba(0, 0, 0, 0) 82%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), rgba(0, 0, 0, 0) 82%);
}

.page-about .about-road img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.55);
}

.page-about .about-timeline-scroller {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 16px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
  padding: 10px var(--gutter) 22px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--mist) transparent;
}

.page-about .about-timeline-scroller::-webkit-scrollbar {
  height: 6px;
}

.page-about .about-timeline-scroller::-webkit-scrollbar-thumb {
  background: var(--mist);
  border-radius: 999px;
}

.page-about .about-timeline-scroller:focus-visible {
  outline: 2px solid var(--barley);
  outline-offset: -3px;
  border-radius: var(--radius-md);
}

.page-about .about-track {
  display: flex;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-stop {
  position: relative;
  flex: 0 0 min(82vw, 268px);
  scroll-snap-align: start;
  background: var(--salt);
  color: var(--ink);
  border-radius: var(--radius-md);
  padding: 22px 18px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
  transition: transform var(--t-fast) var(--ease), box-shadow var(--t-mid) var(--ease);
}

.page-about .about-stop::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  background: linear-gradient(90deg, var(--lake), var(--mist));
}

.page-about .about-stop:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.34);
}

.page-about .about-stop-year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  background: var(--barley);
  color: var(--night);
  padding: 3px 11px;
  border-radius: 999px;
}

.page-about .about-stop-title {
  font-size: 17px;
  margin: 14px 0 8px;
  line-height: 1.35;
}

.page-about .about-stop-text {
  font-size: 14px;
  line-height: 1.68;
  color: var(--wind);
  margin: 0;
}

.page-about .about-scroll-hint {
  position: relative;
  z-index: 2;
  margin: 0;
  padding-inline: var(--gutter);
  max-width: var(--shell);
  margin-inline: auto;
  box-sizing: border-box;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

/* ---------- 合作与评价 ---------- */
.page-about .about-partner-grid {
  display: grid;
  gap: 16px;
  margin-bottom: 20px;
}

.page-about .about-partner-block {
  background: var(--salt);
  border: 1px dashed rgba(107, 74, 50, 0.3);
  border-radius: var(--radius-md);
  padding: 22px 20px;
}

.page-about .about-partner-num {
  display: block;
  font-size: 32px;
  font-weight: 700;
  line-height: 1;
  color: var(--ochre);
  margin-bottom: 12px;
}

.page-about .about-partner-title {
  font-size: 18px;
  margin-bottom: 10px;
}

.page-about .about-partner-text {
  font-size: 15px;
  line-height: 1.72;
  color: var(--wind);
  margin: 0;
}

.page-about .about-awards {
  border: 1px solid rgba(217, 166, 46, 0.5);
  border-radius: var(--radius-lg);
  background-color: var(--salt);
  background-image: linear-gradient(180deg, rgba(217, 166, 46, 0.12), rgba(217, 166, 46, 0));
  padding: clamp(20px, 3vw, 32px);
}

.page-about .about-awards-note {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--ochre);
  margin: 0;
}

.page-about .about-awards ul {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-awards li {
  position: relative;
  padding-left: 24px;
  font-size: 16.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
  line-height: 1.55;
  color: var(--ink);
}

.page-about .about-awards li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.4em;
  width: 12px;
  height: 12px;
  border-radius: 3px;
  background: var(--barley);
}

.page-about .about-awards-text {
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--wind);
}

/* ---------- 服务版图 ---------- */
.page-about .about-coverage {
  background: linear-gradient(160deg,
    rgba(31, 111, 139, 0.11),
    rgba(143, 189, 203, 0.06) 55%,
    rgba(191, 79, 38, 0.07));
  border-top: 1px solid rgba(107, 74, 50, 0.14);
}

.page-about .about-coverage .about-copy-p {
  margin-top: 18px;
}

.page-about .about-map-layout {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  align-items: center;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .about-map {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.page-about .about-map-shape {
  fill: rgba(31, 111, 139, 0.1);
  stroke: var(--lake);
  stroke-width: 1.6;
  stroke-linejoin: round;
}

.page-about .about-map-pin {
  cursor: pointer;
}

.page-about .about-map-pin circle {
  fill: var(--lake);
  transition: fill var(--t-fast) var(--ease);
}

.page-about .about-map-pin .about-map-core {
  fill: var(--salt);
}

.page-about .about-map-pin text {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 700;
  fill: var(--night);
  text-anchor: middle;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--t-fast) var(--ease);
}

.page-about .about-map-pin:hover circle,
.page-about .about-map-pin:focus-visible circle {
  fill: var(--ochre);
}

.page-about .about-map-pin:hover text,
.page-about .about-map-pin:focus-visible text {
  opacity: 1;
}

.page-about .about-map-pin:focus-visible {
  outline: none;
}

.page-about .about-map-pin:focus-visible .about-map-core {
  stroke: var(--barley);
  stroke-width: 2.4;
}

.page-about .about-region-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-about .about-region-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  background: rgba(255, 253, 246, 0.86);
  border: 1px solid rgba(107, 74, 50, 0.14);
  border-radius: var(--radius-sm);
  padding: 11px 14px;
}

.page-about .about-region-name {
  font-size: 14.5px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink);
}

.page-about .about-region-note {
  font-size: 12.5px;
  color: var(--saltgray);
}

.page-about .about-cov-stats {
  list-style: none;
  margin: clamp(24px, 3vw, 36px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-about .about-cov-stats li {
  background: rgba(255, 253, 246, 0.88);
  border: 1px solid rgba(107, 74, 50, 0.14);
  border-radius: var(--radius-md);
  padding: 16px 14px;
}

/* ---------- 收尾 ---------- */
.page-about .about-next {
  padding-block: clamp(36px, 5vw, 64px) clamp(48px, 7vw, 88px);
}

.page-about .about-next-card {
  background: var(--salt);
  border: 1px solid rgba(107, 74, 50, 0.16);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 4vw, 44px);
  box-shadow: 0 4px 16px rgba(34, 26, 20, 0.07);
}

.page-about .about-next-card h2 {
  font-size: clamp(22px, 3vw, 28px);
}

.page-about .about-next-text {
  margin: 14px 0 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--wind);
  max-width: 46em;
}

.page-about .about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 22px 0 16px;
}

.page-about .about-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  border: 1.5px solid transparent;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: background-color var(--t-fast) var(--ease),
              color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease),
              transform var(--t-fast) var(--ease),
              box-shadow var(--t-fast) var(--ease);
}

.page-about .about-btn--solid {
  background: var(--ochre);
  color: var(--salt);
  box-shadow: 0 4px 12px rgba(191, 79, 38, 0.28);
}

.page-about .about-btn--solid:hover {
  background: var(--ochre-deep);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(191, 79, 38, 0.32);
}

.page-about .about-btn--outline {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
}

.page-about .about-btn--outline:hover {
  background: var(--ink);
  color: var(--salt);
  transform: translateY(-2px);
}

.page-about .about-btn:focus-visible {
  outline: 2px solid var(--barley);
  outline-offset: 3px;
}

.page-about .about-next-links {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--saltgray);
}

.page-about .about-next-links a {
  color: var(--lake);
  text-decoration: none;
  border-bottom: 1px solid rgba(31, 111, 139, 0.4);
  transition: border-color var(--t-fast) var(--ease);
}

.page-about .about-next-links a:hover,
.page-about .about-next-links a:focus-visible {
  border-bottom-color: var(--ochre);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .about-cadence li {
    grid-template-columns: 120px 1fr;
    align-items: baseline;
    gap: 16px;
  }
}

@media (min-width: 860px) {
  .page-about .about-split {
    grid-template-columns: 1.05fr 0.95fr;
    gap: clamp(32px, 4vw, 56px);
  }

  .page-about .about-team-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-partner-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-stop {
    flex-basis: 288px;
  }
}

@media (min-width: 1020px) {
  .page-about .about-team-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    align-items: start;
  }

  .page-about .about-team-card:nth-child(even) {
    margin-top: 24px;
  }

  .page-about .about-map-layout {
    grid-template-columns: 1.08fr 0.92fr;
    gap: clamp(28px, 4vw, 48px);
  }

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

  .page-about .about-stop {
    flex-basis: 306px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-team-card,
  .page-about .about-team-duty,
  .page-about .about-stop,
  .page-about .about-btn,
  .page-about .about-map-pin circle,
  .page-about .about-map-pin text {
    transition-duration: 120ms;
    transition-property: opacity, color, background-color, border-color;
  }

  .page-about .about-team-card:hover,
  .page-about .about-stop:hover,
  .page-about .about-btn--solid:hover,
  .page-about .about-btn--outline:hover {
    transform: none;
  }
}
<<<END>>>