.page-about {
  background: var(--c-ink);
  color: var(--c-cream);
  overflow-x: clip;
  padding-bottom: clamp(32px, 5vw, 64px);
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-block: clamp(20px, 4vw, 44px) 0;
}

.page-about .crumbs {
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-about .hero-grid {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-about .hero-title {
  font-family: var(--font-display);
  font-size: clamp(36px, 7.4vw, 68px);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.015em;
  margin: 14px 0 22px;
  color: var(--c-cream);
}

.page-about .hero-title .hl {
  color: var(--c-cyan);
}

.page-about .hero-lede {
  max-width: 56ch;
  font-size: clamp(15.5px, 1.6vw, 17.5px);
  line-height: 1.82;
  color: rgba(243, 235, 221, 0.82);
  margin: 0 0 28px;
}

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

.page-about .hero-index {
  border-top: 1px solid var(--line-bright);
  padding-top: 18px;
}

.page-about .hero-index-title {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--c-cyan);
  margin: 0 0 14px;
}

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

.page-about .node-index li + li {
  border-top: 1px solid var(--line-soft);
}

.page-about .node-index a {
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 13px 0;
  text-decoration: none;
  color: var(--c-cream);
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.page-about .node-index a:hover,
.page-about .node-index a:focus-visible {
  color: var(--c-cyan);
  padding-left: 6px;
}

.page-about .node-index a:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
}

.page-about .ni-year {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--c-orange);
}

.page-about .ni-text {
  font-size: 14.5px;
  line-height: 1.55;
  color: rgba(243, 235, 221, 0.78);
}

/* ---------- 通用区块 ---------- */
.page-about .about-section {
  padding-block: clamp(36px, 6vw, 76px) 0;
}

.page-about .sec-head {
  max-width: 68ch;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-about .sec-title {
  font-family: var(--font-display);
  font-size: clamp(25px, 4vw, 38px);
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.01em;
  margin: 10px 0 12px;
  color: var(--c-brown);
}

.page-about .sec-lede {
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(33, 26, 22, 0.78);
  margin: 0;
}

.page-about .panel--cream .eyebrow,
.page-about .sec-head .eyebrow {
  color: rgba(33, 26, 22, 0.56);
}

.page-about .sec-head--dark .eyebrow {
  color: var(--c-cyan);
}

.page-about .sec-head--dark .sec-title {
  color: var(--c-cream);
}

.page-about .sec-head--dark .sec-lede {
  color: rgba(243, 235, 221, 0.74);
}

/* ---------- 时间线 ---------- */
.page-about .timeline-wrap {
  padding: clamp(20px, 4vw, 44px);
}

.page-about .timeline-wrap .media {
  margin: 0 0 clamp(22px, 3.5vw, 34px);
}

.page-about .timeline-wrap .media img {
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--r);
}

.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 26px;
  position: relative;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 12px;
  bottom: 18px;
  width: 1px;
  background: var(--cream-line);
}

.page-about .tl-item {
  position: relative;
}

.page-about .tl-item::before {
  content: "";
  position: absolute;
  left: -26.5px;
  top: 15px;
  width: 11px;
  height: 11px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--c-cream);
  border: 2px solid var(--c-orange);
}

.page-about .tl-node {
  border-bottom: 1px solid var(--cream-line);
}

.page-about .tl-item:last-child .tl-node {
  border-bottom: 0;
}

.page-about .tl-summary {
  list-style: none;
  cursor: pointer;
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 14px;
  padding: 6px 32px 14px 0;
}

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

.page-about .tl-summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 2px;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--c-orange);
}

.page-about .tl-node[open] .tl-summary::after {
  content: "–";
}

.page-about .tl-summary:focus-visible {
  outline: 2px solid var(--c-orange);
  outline-offset: 4px;
}

.page-about .tl-year {
  font-size: clamp(18px, 2.6vw, 22px);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--c-brown);
}

.page-about .tl-title {
  font-size: clamp(16.5px, 2.2vw, 20px);
  font-weight: 700;
  color: var(--c-brown);
}

.page-about .tl-tag {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: rgba(33, 26, 22, 0.5);
}

.page-about .tl-body {
  padding: 0 0 20px;
}

.page-about .tl-body p {
  margin: 0 0 12px;
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(33, 26, 22, 0.82);
  max-width: 60ch;
}

.page-about .tl-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .tl-points li {
  position: relative;
  padding-left: 16px;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(33, 26, 22, 0.78);
}

.page-about .tl-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.66em;
  width: 6px;
  height: 6px;
  background: var(--c-orange);
}

/* ---------- 版本对照 ---------- */
.page-about .evo {
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  background: rgba(168, 255, 241, 0.04);
}

.page-about .evo-row {
  display: block;
  border-top: 1px solid var(--line-soft);
}

.page-about .evo-row:first-child {
  border-top: 0;
}

.page-about .evo-row--head {
  display: none;
}

.page-about .evo-label {
  display: block;
  padding: 11px 16px;
  font-size: 12.5px;
  letter-spacing: 0.08em;
  font-weight: 700;
  color: var(--c-cream);
  background: rgba(168, 255, 241, 0.07);
}

.page-about .evo-cell {
  display: block;
  padding: 12px 16px;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(243, 235, 221, 0.82);
  border-top: 1px solid var(--line-soft);
}

.page-about .evo-cell-tag {
  display: block;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-cyan);
  margin-bottom: 4px;
}

/* ---------- 团队 ---------- */
.page-about .team-wrap {
  padding: clamp(20px, 4vw, 44px);
}

.page-about .team-grid {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

.page-about .team-figure {
  margin: 0;
}

.page-about .team-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--r);
}

.page-about .team-lede {
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(33, 26, 22, 0.8);
  max-width: 54ch;
  margin: 0 0 22px;
}

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

.page-about .team-tag {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 14px;
  padding: 16px 0 16px 14px;
  border-bottom: 1px solid var(--cream-line);
  transition: background 0.25s var(--ease);
}

.page-about .team-tag:hover {
  background: rgba(33, 26, 22, 0.045);
}

.page-about .team-tag::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  bottom: 18px;
  width: 2px;
}

.page-about .team-tag--a::before {
  background: var(--c-cyan);
}

.page-about .team-tag--b::before {
  background: var(--c-orange);
}

.page-about .team-tag--c::before {
  background: var(--c-mist);
}

.page-about .team-num {
  grid-row: span 2;
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 700;
  line-height: 1;
  color: var(--c-brown);
  padding-top: 2px;
}

.page-about .team-role {
  font-size: 16px;
  font-weight: 700;
  color: var(--c-brown);
}

.page-about .team-desc {
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(33, 26, 22, 0.78);
}

/* ---------- 合作生态 ---------- */
.page-about .coop {
  display: grid;
  gap: clamp(22px, 3.5vw, 40px);
}

.page-about .coop-text h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 3.8vw, 36px);
  line-height: 1.22;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--c-cream);
  margin: 10px 0 16px;
}

.page-about .coop-text > p {
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(243, 235, 221, 0.8);
  max-width: 52ch;
  margin: 0 0 18px;
}

.page-about .coop-list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-about .coop-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(243, 235, 221, 0.82);
  max-width: 54ch;
}

.page-about .coop-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 9px;
  height: 2px;
  background: var(--c-orange);
}

.page-about .coop-figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
}

.page-about .coop-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 数据带 ---------- */
.page-about .score-band {
  margin-top: clamp(36px, 6vw, 76px);
  padding-block: clamp(26px, 4vw, 44px);
  background: var(--c-carbon);
  border-top: 3px solid var(--c-orange);
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}

.page-about .band-title {
  font-family: var(--font-display);
  font-size: clamp(17px, 2.4vw, 22px);
  font-weight: 700;
  color: var(--c-cream);
  margin: 0 0 22px;
}

.page-about .band-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px 18px;
}

.page-about .band-num {
  display: block;
  font-size: clamp(26px, 3.6vw, 34px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--c-cyan);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.page-about .band-label {
  display: block;
  margin-top: 9px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--c-mist);
}

/* ---------- 服务与备案 ---------- */
.page-about .local-wrap {
  padding: clamp(20px, 4vw, 44px);
}

.page-about .local-grid {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

.page-about .local-grid h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--c-brown);
  margin: 0 0 10px;
}

.page-about .local-grid p {
  font-size: 15.5px;
  line-height: 1.8;
  color: rgba(33, 26, 22, 0.82);
  max-width: 52ch;
  margin: 0 0 12px;
}

.page-about .contact-list {
  margin: 0;
  border-top: 1px solid var(--cream-line);
}

.page-about .contact-list > div {
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr);
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--cream-line);
}

.page-about .contact-list dt {
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: rgba(33, 26, 22, 0.58);
}

.page-about .contact-list dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--c-brown);
  overflow-wrap: anywhere;
}

.page-about .local-note {
  margin: 18px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(33, 26, 22, 0.62);
}

/* ---------- 结尾 ---------- */
.page-about .about-cta {
  padding-block: clamp(38px, 6vw, 76px) clamp(16px, 3vw, 32px);
}

.page-about .about-cta .eyebrow {
  color: var(--c-cyan);
}

.page-about .about-cta h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 38px);
  line-height: 1.2;
  font-weight: 800;
  color: var(--c-cream);
  margin: 10px 0 22px;
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .band-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .hero-grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 0.55fr);
    align-items: start;
    gap: clamp(32px, 5vw, 64px);
  }

  .page-about .hero-index {
    padding-top: 24px;
  }

  .page-about .tl-summary {
    padding-right: 44px;
  }

  .page-about .coop {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }

  .page-about .team-grid {
    grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.3fr);
    align-items: start;
  }

  .page-about .local-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
  }
}

@media (min-width: 960px) {
  .page-about .evo-row,
  .page-about .evo-row--head {
    display: grid;
    grid-template-columns: 150px repeat(3, minmax(0, 1fr));
  }

  .page-about .evo-label {
    background: rgba(168, 255, 241, 0.07);
    padding: 16px;
    align-self: stretch;
  }

  .page-about .evo-cell {
    padding: 16px;
    border-top: 0;
    border-left: 1px solid var(--line-soft);
  }

  .page-about .evo-row--head .evo-cell {
    font-size: 12px;
    letter-spacing: 0.14em;
    color: var(--c-cyan);
  }

  .page-about .evo-cell-tag {
    display: none;
  }
}

@media (min-width: 1100px) {
  .page-about .band-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .node-index a,
  .page-about .team-tag {
    transition: none;
  }
}
<<<END>>>