.page-about {
  background: var(--rice);
  color: var(--ink);
  font-family: var(--font-sans);
}

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 18px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--slate);
}

.page-about .breadcrumb-link {
  color: var(--sea);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 1px;
}

.page-about .breadcrumb-link:hover {
  color: var(--orange);
  border-color: var(--orange);
}

.page-about .breadcrumb-sep {
  color: var(--mist);
}

.page-about .ab-inline-link {
  color: var(--sea);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

.page-about .ab-inline-link:hover {
  color: var(--orange);
  border-color: var(--orange);
}

/* ---------- 首屏 ---------- */
.page-about .ab-hero {
  position: relative;
  background: var(--sea);
  color: var(--rice);
  border-bottom: 3px solid var(--orange);
  overflow: hidden;
}

.page-about .ab-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 9px;
  background-image: repeating-linear-gradient(to right, var(--ice) 0 1px, transparent 1px 26px);
  opacity: .32;
  pointer-events: none;
}

.page-about .ab-hero::after {
  content: "";
  position: absolute;
  right: -80px;
  bottom: -120px;
  width: 320px;
  height: 320px;
  border: 1px solid var(--line-light);
  transform: rotate(45deg);
  pointer-events: none;
}

.page-about .ab-hero-inner {
  display: grid;
  gap: clamp(28px, 4vw, 52px);
  padding: clamp(38px, 6vw, 76px) 0 clamp(34px, 5vw, 60px);
}

.page-about .ab-kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 12px;
}

.page-about .ab-hero-copy .ab-kicker {
  color: var(--amber);
}

.page-about .ab-hero-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.1rem, 6.vw, 3.9rem);
  font-size: clamp(2.1rem, 6vw, 3.9rem);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: .01em;
  max-width: 18ch;
}

.page-about .ab-hero-lede {
  margin: 20px 0 0;
  max-width: 48ch;
  font-size: clamp(14.5px, 1.6vw, 16px);
  line-height: 1.9;
  color: rgba(246, 241, 231, .84);
}

.page-about .ab-hero-side {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border-top: 1px solid var(--line-light);
  border-left: 1px solid var(--line-light);
  align-self: end;
}

.page-about .ab-stat {
  padding: 14px 13px 16px;
  border-right: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
}

.page-about .ab-stat-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(1.25rem, 2.6vw, 1.7rem);
  line-height: 1;
  color: var(--amber);
  letter-spacing: -.01em;
}

.page-about .ab-stat-label {
  margin: 9px 0 0;
  font-size: 11.5px;
  letter-spacing: .05em;
  color: rgba(246, 241, 231, .7);
  line-height: 1.5;
}

/* ---------- 双轴布局 ---------- */
.page-about .ab-layout {
  display: grid;
  gap: clamp(24px, 4vw, 54px);
  padding: clamp(34px, 5vw, 64px) 0 clamp(40px, 6vw, 76px);
}

.page-about .ab-index {
  border-top: 2px solid var(--sea);
  padding-top: 14px;
}

.page-about .ab-index-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-about .ab-jump-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-about .ab-jump-link {
  display: block;
  white-space: nowrap;
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--slate);
  padding: 8px 12px;
  border: 1px solid var(--line);
  background: #fff;
  transition: color .16s ease, border-color .16s ease;
}

.page-about .ab-jump-link:hover {
  color: var(--ink);
  border-color: var(--line-strong);
}

.page-about .ab-jump-link[data-active] {
  color: var(--ink);
  border-color: var(--orange);
  background: #fff;
  font-weight: 600;
}

.page-about .ab-index-note {
  margin: 16px 0 0;
  font-size: 12px;
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 章节 ---------- */
.page-about .ab-body > .ab-section {
  padding: clamp(26px, 4vw, 46px) 0;
  border-top: 1px solid var(--line);
}

.page-about .ab-body > .ab-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .ab-h2 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.6vw, 2.3rem);
  line-height: 1.26;
  font-weight: 700;
  max-width: 24ch;
}

.page-about .ab-text p {
  margin: 0 0 14px;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.92;
  color: rgba(16, 20, 24, .82);
}

.page-about .ab-text p:last-child {
  margin-bottom: 0;
}

.page-about .ab-text .ab-lead {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
}

.page-about .ab-text-single {
  margin: 0;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.9;
  color: rgba(16, 20, 24, .8);
}

.page-about .ab-note {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .03em;
  color: var(--slate);
  border-left: 2px solid var(--orange);
  padding-left: 12px;
  line-height: 1.7;
}

/* ---------- 图文混排 ---------- */
.page-about .ab-media {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  margin-top: 4px;
}

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

.page-about .ab-figure .img-frame {
  display: block;
  border: 1px solid var(--line-strong);
  background: var(--pale);
  overflow: hidden;
  max-width: 100%;
}

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

.page-about .ab-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  line-height: 1.65;
  color: var(--slate);
}

.page-about .ab-figure--wide {
  margin-top: 22px;
}

/* ---------- 表格 ---------- */
.page-about .ab-table-wrap {
  margin-top: 24px;
  overflow-x: auto;
  border: 1px solid var(--line);
  background: #fff;
}

.page-about .data-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 13px;
  line-height: 1.7;
}

.page-about .data-table th {
  background: var(--sea);
  color: var(--rice);
  text-align: left;
  padding: 11px 14px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .1em;
  white-space: nowrap;
}

.page-about .data-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  color: rgba(16, 20, 24, .82);
  vertical-align: top;
}

.page-about .data-table tbody tr:nth-child(even) {
  background: var(--pale);
}

.page-about .data-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-about .data-table td:first-child {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--sea);
  white-space: nowrap;
}

/* ---------- 团队 ---------- */
.page-about .ab-team {
  display: grid;
  gap: 14px;
  margin-top: 22px;
}

.page-about .ab-team-item {
  background: #fff;
  border: 1px solid var(--line);
  border-top: 2px solid var(--sea);
  padding: 18px 16px 20px;
}

.page-about .ab-team-item:nth-child(3) {
  border-top-color: var(--orange);
}

.page-about .ab-team-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--orange);
  text-transform: uppercase;
}

.page-about .ab-team-name {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--sea);
}

.page-about .ab-team-text {
  margin: 8px 0 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: rgba(16, 20, 24, .78);
}

/* ---------- 使用场景 ---------- */
.page-about .ab-who {
  margin-top: 22px;
  border-top: 1px solid var(--line-strong);
}

.page-about .ab-who-item {
  display: grid;
  gap: 6px;
  padding: 18px 0 18px 14px;
  border-bottom: 1px solid var(--line);
  border-left: 3px solid var(--mist);
  transition: border-left-color .18s ease, background .18s ease;
}

.page-about .ab-who-item:hover {
  border-left-color: var(--orange);
  background: rgba(232, 238, 242, .55);
}

.page-about .ab-who-label {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-display);
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--sea);
}

.page-about .ab-who-pct {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--orange-deep);
  background: rgba(255, 176, 0, .16);
  padding: 2px 8px;
}

.page-about .ab-who-text {
  margin: 0;
  font-size: 13.8px;
  line-height: 1.85;
  color: rgba(16, 20, 24, .8);
  max-width: 62ch;
}

/* ---------- 时间线 ---------- */
.page-about .ab-timeline {
  list-style: none;
  margin: 24px 0 0;
  padding: 0 0 0 24px;
  position: relative;
}

.page-about .ab-timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 14px;
  width: 1px;
  background: var(--line-strong);
}

.page-about .ab-tl-item {
  position: relative;
  padding-bottom: 24px;
}

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

.page-about .ab-tl-item::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 6px;
  width: 11px;
  height: 11px;
  background: var(--rice);
  border: 1px solid var(--sea);
  transition: background .18s ease, border-color .18s ease, transform .18s ease;
}

.page-about .ab-tl-item:hover::before {
  background: var(--orange);
  border-color: var(--orange);
  transform: scale(1.18);
}

.page-about .ab-tl-tag {
  margin: 0 0 5px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--slate);
}

.page-about .ab-tl-item:hover .ab-tl-tag {
  color: var(--orange-deep);
}

.page-about .ab-tl-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--sea);
}

.page-about .ab-tl-text {
  margin: 0;
  max-width: 60ch;
  font-size: 13.8px;
  line-height: 1.85;
  color: rgba(16, 20, 24, .8);
}

/* ---------- 收尾 ---------- */
.page-about .ab-cta {
  margin-top: clamp(30px, 5vw, 54px);
  background: var(--sea);
  color: var(--rice);
  padding: clamp(24px, 4vw, 42px);
  display: grid;
  gap: 22px;
  border-top: 3px solid var(--orange);
}

.page-about .ab-cta-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3vw, 1.85rem);
  font-weight: 700;
  line-height: 1.3;
}

.page-about .ab-cta-text {
  margin: 12px 0 0;
  font-size: 13.8px;
  line-height: 1.9;
  color: rgba(246, 241, 231, .82);
  max-width: 56ch;
}

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

.page-about .ab-cta-link {
  display: inline-block;
  text-decoration: none;
  font-size: 13px;
  letter-spacing: .05em;
  padding: 11px 18px;
  background: var(--orange);
  color: #fff;
  border: 1px solid var(--orange);
  transition: background .18s ease, border-color .18s ease;
}

.page-about .ab-cta-link:hover {
  background: var(--orange-deep);
  border-color: var(--orange-deep);
}

.page-about .ab-cta-link--plain {
  background: transparent;
  border-color: rgba(159, 195, 217, .55);
  color: var(--rice);
}

.page-about .ab-cta-link--plain:hover {
  background: rgba(159, 195, 217, .16);
  border-color: var(--ice);
}

.page-about .ab-foot-links {
  margin: 22px 0 0;
  font-size: 13px;
  line-height: 1.85;
  color: var(--slate);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .ab-team {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .ab-who-item {
    grid-template-columns: minmax(180px, 230px) minmax(0, 1fr);
    gap: 0 24px;
    align-items: start;
    padding: 20px 0 20px 18px;
  }

  .page-about .ab-who-label {
    flex-direction: column;
    gap: 8px;
  }
}

@media (min-width: 820px) {
  .page-about .ab-media {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    align-items: center;
    gap: clamp(26px, 3.5vw, 44px);
  }

  .page-about .ab-media--flip > .ab-figure {
    order: 2;
  }

  .page-about .ab-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-about .ab-cta-actions {
    justify-content: flex-end;
    flex-wrap: nowrap;
  }
}

@media (min-width: 900px) {
  .page-about .ab-hero-inner {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, .85fr);
    align-items: end;
  }
}

@media (min-width: 980px) {
  .page-about .ab-layout {
    grid-template-columns: 190px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .ab-index {
    position: sticky;
    top: 24px;
  }

  .page-about .ab-jump-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    border-left: 1px solid var(--line);
  }

  .page-about .ab-jump-link {
    border: 0;
    border-left: 2px solid transparent;
    background: transparent;
    padding: 9px 0 9px 14px;
  }

  .page-about .ab-jump-link:hover {
    background: transparent;
  }

  .page-about .ab-jump-link[data-active] {
    border-color: transparent;
    border-left-color: var(--orange);
    background: transparent;
  }
}
<<<END>>>