.page-about {
  --ab-inline: clamp(18px, 4vw, 48px);
  --ab-section-gap: clamp(46px, 7vw, 88px);
  --ab-max: var(--content-max);
  background: var(--sand-50);
  color: var(--ink-900);
  font-family: var(--font-sans);
  line-height: 1.75;
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-about * {
  min-width: 0;
}

.page-about .ab-wrap {
  width: 100%;
  max-width: var(--ab-max);
  margin-inline: auto;
  padding-inline: var(--ab-inline);
  padding-top: clamp(18px, 3vw, 32px);
}

.page-about .breadcrumbs {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--ink-700);
  margin-bottom: clamp(16px, 3vw, 26px);
}

.page-about .breadcrumbs a {
  color: var(--zhuhong-600);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  border-bottom-color: currentColor;
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 4vw, 32px);
  padding-bottom: clamp(26px, 4vw, 40px);
}

.page-about .ab-kicker {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--zhuhong-600);
  font-weight: 700;
}

.page-about h1 {
  margin: 0 0 14px;
  font-size: clamp(1.9rem, 4.4vw, 3.1rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
  font-weight: 900;
}

.page-about .ab-lead {
  margin: 0 0 20px;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--ink-700);
  max-width: 46em;
}

.page-about .ab-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .ab-hero-visual {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
  padding: 20px;
  border-radius: var(--radius-panel);
  background:
    radial-gradient(120% 100% at 80% 0%, rgba(255, 106, 26, 0.24), transparent 62%),
    var(--ink-900);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.page-about .ab-hero-visual svg {
  width: 100%;
  max-width: 260px;
  height: auto;
  margin-inline: auto;
  display: block;
}

.page-about .ab-hero-visual-note {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--sand-200);
  text-align: center;
}

/* ---------- 关键数字 ---------- */
.page-about .ab-stats {
  list-style: none;
  margin: 0 0 clamp(26px, 4vw, 40px);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.page-about .ab-stats li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 14px;
  border-radius: var(--radius-fold);
  box-shadow: inset 0 0 0 1px var(--sand-200);
  background: var(--sand-50);
}

.page-about .ab-stat-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--ink-900);
}

.page-about .ab-stat-label {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--ink-700);
}

/* ---------- 页内导航 ---------- */
.page-about .ab-jump {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 16px;
  padding-block: 12px;
  margin-bottom: clamp(30px, 5vw, 54px);
  border-top: 1px solid var(--sand-200);
  border-bottom: 1px solid var(--sand-200);
}

.page-about .ab-jump-label {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ink-700);
}

.page-about .ab-jump ul {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .ab-jump a {
  font-size: 14px;
  color: var(--ink-700);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
}

.page-about .ab-jump a:hover,
.page-about .ab-jump a:focus-visible {
  color: var(--zhuhong-600);
  border-bottom-color: currentColor;
}

/* ---------- 章节骨架与序号 ---------- */
.page-about .ab-flow {
  counter-reset: ab-sec;
}

.page-about .ab-section {
  counter-increment: ab-sec;
  scroll-margin-top: 84px;
}

.page-about .ab-section + .ab-section {
  margin-top: var(--ab-section-gap);
}

.page-about .ab-sec-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  row-gap: 6px;
  align-items: start;
  margin-bottom: clamp(18px, 3vw, 26px);
}

.page-about .ab-sec-head::before {
  content: counter(ab-sec, decimal-leading-zero);
  grid-row: 1 / 3;
  grid-column: 1;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(2.4rem, 7vw, 3.6rem);
  line-height: 0.92;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1.4px var(--sand-200);
}

.page-about .ab-sec-title {
  grid-column: 2;
  margin: 0;
  font-size: clamp(1.35rem, 2.6vw, 1.85rem);
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.3;
}

.page-about .ab-sec-sub {
  grid-column: 2;
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink-700);
  max-width: 42em;
}

/* ---------- 图片 ---------- */
.page-about .ab-figure {
  margin: 0;
}

.page-about .ab-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-fold);
  background: var(--ink-900);
}

.page-about .ab-figure figcaption {
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink-700);
  letter-spacing: 0.02em;
}

.page-about .ab-figure--band {
  margin-bottom: clamp(22px, 3.5vw, 34px);
}

.page-about .ab-figure--band img {
  aspect-ratio: 16 / 6;
}

/* ---------- 时间线 ---------- */
.page-about .ab-tl {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .ab-tl-item {
  --tl-year-w: 42px;
  --tl-gap: 12px;
  position: relative;
  padding-left: calc(var(--tl-year-w) + var(--tl-gap) + 32px);
  padding-bottom: 28px;
}

.page-about .ab-tl-item::before {
  content: "";
  position: absolute;
  left: calc(var(--tl-year-w) + var(--tl-gap) + 6px);
  top: 14px;
  bottom: 0;
  width: 1px;
  background: var(--sand-200);
}

.page-about .ab-tl-item:last-child {
  padding-bottom: 0;
}

.page-about .ab-tl-item:last-child::before {
  display: none;
}

.page-about .ab-tl-item::after {
  content: "";
  position: absolute;
  left: calc(var(--tl-year-w) + var(--tl-gap));
  top: 4px;
  width: 13px;
  height: 13px;
  box-sizing: border-box;
  border-radius: 50%;
  border: 2px solid var(--orange-500);
  background: var(--sand-50);
}

.page-about .ab-tl-item.is-now::after {
  border-color: transparent;
  background: var(--gradient-action);
  width: 16px;
  height: 16px;
  top: 2px;
  left: calc(var(--tl-year-w) + var(--tl-gap) - 1.5px);
  box-shadow: 0 0 0 3px rgba(255, 106, 26, 0.16);
}

.page-about .ab-tl-year {
  position: absolute;
  left: 0;
  top: 1px;
  width: var(--tl-year-w);
  text-align: right;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--zhuhong-600);
  font-weight: 700;
}

.page-about .ab-tl-title {
  margin: 0 0 6px;
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.5;
}

.page-about .ab-tl-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-700);
  max-width: 40em;
}

/* ---------- 走查清单 ---------- */
.page-about .ab-audit-intro {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-bottom: clamp(20px, 3vw, 28px);
}

.page-about .ab-figure--board img {
  aspect-ratio: 4 / 3;
}

.page-about .ab-audit-intro-text p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-700);
}

.page-about .ab-inline-link {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  color: var(--zhuhong-600);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
}

.page-about .ab-inline-link:hover,
.page-about .ab-inline-link:focus-visible {
  color: var(--ink-900);
}

.page-about .ab-audit-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
}

.page-about .ab-audit-cell {
  position: relative;
  padding: 15px 16px 14px;
  border-radius: 2px 14px 2px 14px;
  background: var(--sand-50);
  box-shadow: inset 0 0 0 1px var(--sand-200);
  transition: box-shadow 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-about .ab-audit-cell:hover,
.page-about .ab-audit-cell:focus-within {
  box-shadow: inset 0 0 0 1px var(--orange-500);
  transform: translateY(-2px);
}

.page-about .ab-audit-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--orange-500);
  margin-bottom: 6px;
}

.page-about .ab-audit-title {
  margin: 0 0 5px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: -0.005em;
}

.page-about .ab-audit-desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--ink-700);
}

.page-about .ab-audit-more {
  margin: 0;
  padding-top: 6px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--celadon-500);
}

/* ---------- 三档状态 ---------- */
.page-about .ab-status-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-about .ab-status-card {
  padding: 18px 18px 16px;
  border-radius: var(--radius-fold);
  background: var(--sand-50);
  box-shadow: inset 0 0 0 1px var(--sand-200);
  border-top: 4px solid var(--sand-200);
}

.page-about .ab-status-card--live {
  border-top-color: var(--celadon-500);
  background: linear-gradient(180deg, var(--celadon-100), var(--sand-50) 68%);
}

.page-about .ab-status-card--pending {
  border-top-color: var(--orange-500);
  background: linear-gradient(180deg, var(--orange-100), var(--sand-50) 68%);
}

.page-about .ab-status-card--neutral {
  border-top-color: var(--ink-700);
}

.page-about .ab-status-card h3 {
  margin: 12px 0 6px;
  font-size: 1.02rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.45;
}

.page-about .ab-status-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-700);
}

.page-about .ab-status-note {
  margin-top: 10px !important;
  padding-top: 10px;
  border-top: 1px dashed var(--sand-200);
  font-size: 13px !important;
  color: var(--ink-900) !important;
}

/* ---------- 覆盖与生态 ---------- */
.page-about .ab-reach-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-about .ab-dots-panel {
  padding: 18px;
  border-radius: var(--radius-panel);
  background: var(--ink-900);
  color: var(--sand-50);
}

.page-about .ab-dots-caption {
  margin: 0 0 14px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--sand-200);
}

.page-about .ab-dots {
  display: grid;
  grid-template-columns: repeat(13, minmax(0, 1fr));
  gap: 5px;
  margin-bottom: 16px;
}

.page-about .ab-dot {
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: #3a3532;
  box-shadow: inset 0 0 0 1px rgba(250, 245, 236, 0.16);
}

.page-about .ab-dot.is-core {
  background: var(--celadon-500);
  box-shadow: 0 0 0 2px rgba(63, 143, 122, 0.28);
}

.page-about .ab-dots-legend {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .ab-dots-legend li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--sand-200);
}

.page-about .ab-legend-dot {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: 6px;
  border-radius: 50%;
  background: #3a3532;
  box-shadow: inset 0 0 0 1px rgba(250, 245, 236, 0.24);
}

.page-about .ab-legend-dot--core {
  background: var(--celadon-500);
  box-shadow: none;
}

.page-about .ab-sub-title {
  margin: 0 0 10px;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-about .ab-reach-text .ab-sub-title + .ab-sub-title,
.page-about .ab-reach-text ul + .ab-sub-title {
  margin-top: 18px;
}

.page-about .ab-partner-list,
.page-about .ab-check-list,
.page-about .ab-team-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-about .ab-partner-list li,
.page-about .ab-check-list li,
.page-about .ab-team-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-700);
}

.page-about .ab-partner-list li::before,
.page-about .ab-check-list li::before,
.page-about .ab-team-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 1px;
  background: var(--orange-500);
}

.page-about .ab-check-list li::before {
  background: var(--celadon-500);
  border-radius: 50%;
}

.page-about .ab-team-list li::before {
  background: var(--zhuhong-600);
}

.page-about .ab-partner-list strong,
.page-about .ab-team-list strong {
  color: var(--ink-900);
  font-weight: 700;
  margin-right: 4px;
}

.page-about .ab-reach-note,
.page-about .ab-team-note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-700);
  padding: 10px 12px;
  border-radius: var(--radius-fold);
  background: var(--celadon-100);
}

/* ---------- 团队 ---------- */
.page-about .ab-team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}

.page-about .ab-figure--team img {
  aspect-ratio: 4 / 3;
}

.page-about .ab-team-text > p:first-child {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-700);
}

/* ---------- 入口做法 ---------- */
.page-about .ab-craft-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-about .ab-craft-card {
  position: relative;
  padding: 18px 18px 16px;
  border-radius: var(--radius-fold);
  background: var(--sand-50);
  box-shadow: inset 0 0 0 1px var(--sand-200);
}

.page-about .ab-craft-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gradient-action);
  color: var(--sand-50);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 10px;
}

.page-about .ab-craft-card h3 {
  margin: 0 0 6px;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.page-about .ab-craft-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink-700);
}

/* ---------- 收尾 ---------- */
.page-about .ab-cta {
  margin-top: var(--ab-section-gap);
  padding: clamp(24px, 4vw, 40px);
  border-radius: var(--radius-panel);
  background:
    radial-gradient(130% 120% at 100% 0%, rgba(255, 106, 26, 0.26), transparent 60%),
    var(--ink-900);
  color: var(--sand-50);
}

.page-about .ab-cta h2 {
  margin: 0 0 8px;
  font-size: clamp(1.25rem, 2.4vw, 1.7rem);
  font-weight: 900;
  letter-spacing: -0.015em;
  color: var(--sand-50);
}

.page-about .ab-cta p {
  margin: 0 0 18px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--sand-200);
  max-width: 34em;
}

.page-about .ab-cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .ab-cta-links .btn--ghost {
  color: var(--sand-50);
}

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

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

  .page-about .ab-audit-more {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    padding-top: 0;
    transition: max-height 0.24s var(--ease), opacity 0.24s var(--ease), padding-top 0.24s var(--ease);
  }

  .page-about .ab-audit-cell:hover .ab-audit-more,
  .page-about .ab-audit-cell:focus-within .ab-audit-more {
    max-height: 90px;
    opacity: 1;
    padding-top: 6px;
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: stretch;
  }

  .page-about .ab-hero-visual {
    align-self: start;
  }

  .page-about .ab-audit-intro {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: start;
    gap: 26px;
  }

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

  .page-about .ab-reach-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 28px;
    align-items: start;
  }

  .page-about .ab-team-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 26px;
    align-items: start;
  }

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

  .page-about .ab-tl-item {
    --tl-year-w: 82px;
    --tl-gap: 16px;
    padding-bottom: 34px;
  }

  .page-about .ab-tl-year {
    font-size: 13px;
  }
}

@media (min-width: 1000px) {
  .page-about .ab-audit-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ab-audit-cell,
  .page-about .ab-audit-more {
    transition: none;
  }

  .page-about .ab-audit-cell:hover {
    transform: none;
  }
}
<<<END>>>