.page-about {
  --about-line: #23445C;
  --about-panel: #0B1F38;
  --about-line-soft: rgba(35, 68, 92, 0.55);
}

/* 面包屑 */
.page-about .breadcrumb {
  border-bottom: 1px solid var(--about-line-soft);
  padding-block: 10px;
}
.page-about .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}
.page-about .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: var(--about-line);
  margin-right: 8px;
}
.page-about .breadcrumb-link {
  color: var(--mist);
  text-decoration: none;
  transition: color 200ms var(--ease);
}
.page-about .breadcrumb-link:hover,
.page-about .breadcrumb-link:focus-visible {
  color: var(--cyan);
}
.page-about .breadcrumb-link[aria-current="page"] {
  color: var(--ice);
}

/* 首屏 */
.page-about .about-hero {
  padding-block: clamp(40px, 7vw, 96px) clamp(32px, 5vw, 64px);
  background:
    linear-gradient(180deg, rgba(14, 59, 74, 0.35) 0%, rgba(6, 19, 36, 0) 70%),
    var(--ink-900);
  border-bottom: 1px solid var(--about-line-soft);
}
.page-about .about-hero-grid {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  grid-template-columns: minmax(0, 1fr);
}
.page-about .about-title {
  margin: 12px 0 20px;
  font-size: clamp(32px, 7.2vw, 76px);
  line-height: 1.08;
  letter-spacing: 0.03em;
  font-weight: 800;
  color: var(--ice);
  overflow-wrap: break-word;
}
.page-about .about-title-mark {
  color: var(--cyan);
  display: inline;
}
.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* 品牌档案面板 */
.page-about .about-dossier {
  position: relative;
  border: 1px solid var(--about-line);
  background: var(--about-panel);
  padding: 20px 20px 16px;
}
.page-about .about-dossier::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 22px;
  height: 22px;
  border-top: 2px solid var(--cyan);
  border-left: 2px solid var(--cyan);
}
.page-about .dossier-head {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--about-line-soft);
}
.page-about .dossier-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--mist);
}
.page-about .dossier-list {
  margin: 0;
  padding: 0;
}
.page-about .dossier-item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--about-line-soft);
}
.page-about .dossier-item dt {
  font-size: 13px;
  color: var(--mist);
  letter-spacing: 0.04em;
}
.page-about .dossier-item dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  color: var(--ice);
  white-space: nowrap;
}
.page-about .dossier-value--amber {
  color: var(--amber);
}
.page-about .dossier-unit {
  font-size: 12px;
  color: var(--mist);
  margin-left: 3px;
}
.page-about .dossier-foot {
  margin: 14px 0 0;
  font-size: 12px;
  color: var(--mist);
  letter-spacing: 0.05em;
}

/* 品牌起点 */
.page-about .about-origin {
  background: var(--ink-900);
}
.page-about .origin-head {
  max-width: 82ch;
}
.page-about .origin-lede {
  margin: 16px 0 0;
  color: var(--mist);
  font-size: 17px;
  line-height: 1.8;
}
.page-about .origin-grid {
  display: grid;
  gap: 0;
  margin-top: clamp(28px, 4vw, 48px);
  border-top: 1px solid var(--about-line);
}
.page-about .origin-cell {
  padding: 24px 0;
  border-bottom: 1px solid var(--about-line-soft);
}
.page-about .origin-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}
.page-about .origin-cell h3 {
  margin: 10px 0 8px;
  font-size: 20px;
  letter-spacing: 0.04em;
  color: var(--ice);
}
.page-about .origin-cell p {
  margin: 0;
  color: var(--mist);
  line-height: 1.8;
  font-size: 15px;
}

/* 主体双栏 */
.page-about .about-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 5vw, 56px);
  padding-block: clamp(36px, 5vw, 64px);
}
.page-about .about-main {
  min-width: 0;
}

/* 演进轨道 */
.page-about .about-track {
  background: transparent;
}
.page-about .track-lede {
  margin: 14px 0 0;
  color: var(--mist);
  line-height: 1.8;
  max-width: 68ch;
}
.page-about .about-track-figure {
  margin: 26px 0 8px;
}
.page-about .track-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0 0 0 26px;
  position: relative;
}
.page-about .track-list::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--cyan) 0%, var(--cyan-dim) 45%, var(--about-line) 100%);
}
.page-about .track-item {
  position: relative;
  padding: 18px 0 22px;
  border-bottom: 1px solid var(--about-line-soft);
}
.page-about .track-item::before {
  content: "";
  position: absolute;
  left: -26px;
  top: 26px;
  width: 11px;
  height: 11px;
  background: var(--ink-900);
  border: 1px solid var(--cyan-dim);
  transition: background-color 200ms var(--ease), transform 200ms var(--ease), border-color 200ms var(--ease);
}
.page-about .track-item:hover::before,
.page-about .track-item:focus-within::before {
  background: var(--cyan);
  border-color: var(--cyan);
  transform: scale(1.18);
}
.page-about .track-item--current::before {
  background: var(--amber);
  border-color: var(--amber);
}
.page-about .track-version {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--amber);
  margin-bottom: 6px;
}
.page-about .track-body {
  transition: transform 200ms var(--ease);
}
.page-about .track-item:hover .track-body {
  transform: translateX(3px);
}
.page-about .track-body h3 {
  margin: 0 0 8px;
  font-size: 21px;
  letter-spacing: 0.03em;
  color: var(--ice);
}
.page-about .track-body p {
  margin: 0;
  color: var(--mist);
  line-height: 1.8;
  font-size: 15px;
}
.page-about .track-points {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
}
.page-about .track-points li {
  position: relative;
  padding-left: 16px;
  color: var(--ice);
  font-size: 14px;
  line-height: 1.8;
  opacity: 0.82;
  transition: opacity 200ms var(--ease);
}
.page-about .track-item:hover .track-points li {
  opacity: 1;
}
.page-about .track-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 6px;
  height: 1px;
  background: var(--cyan-dim);
}
.page-about .track-link {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 207, 0.45);
  padding-bottom: 3px;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}
.page-about .track-link:hover,
.page-about .track-link:focus-visible {
  color: var(--amber);
  border-color: var(--amber);
}

/* 团队 */
.page-about .about-team {
  margin-top: clamp(36px, 5vw, 60px);
}
.page-about .team-lede {
  margin: 14px 0 0;
  color: var(--mist);
  line-height: 1.8;
  max-width: 68ch;
}
.page-about .about-team-figure {
  margin: 24px 0 8px;
}
.page-about .team-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--about-line);
}
.page-about .team-card {
  padding: 20px 0;
  border-bottom: 1px solid var(--about-line-soft);
  transition: background-color 200ms var(--ease), padding-left 200ms var(--ease);
}
.page-about .team-card:hover,
.page-about .team-card:focus-within {
  background: rgba(14, 59, 74, 0.42);
  padding-left: 14px;
}
.page-about .team-count {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan-dim);
  text-transform: none;
}
.page-about .team-card h3 {
  margin: 6px 0 8px;
  font-size: 19px;
  letter-spacing: 0.03em;
  color: var(--ice);
}
.page-about .team-card p {
  margin: 0;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.8;
}
.page-about .team-bar {
  margin-top: 14px;
  height: 2px;
  background: var(--about-line-soft);
  max-width: 220px;
  overflow: hidden;
}
.page-about .team-bar span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--cyan-dim) 100%);
}

/* 事实栏 */
.page-about .about-facts {
  border: 1px solid var(--about-line);
  background: var(--indigo-900);
  padding: 22px 20px;
  align-self: start;
}
.page-about .facts-title {
  margin: 0 0 16px;
  font-size: 15px;
  letter-spacing: 0.14em;
  color: var(--ice);
  font-weight: 700;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(234, 246, 255, 0.18);
}
.page-about .facts-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .facts-item {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(234, 246, 255, 0.12);
}
.page-about .facts-num {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--ice);
  min-width: 5.2em;
  letter-spacing: -0.01em;
}
.page-about .facts-num--amber {
  color: var(--amber);
}
.page-about .facts-unit {
  font-size: 13px;
  color: var(--mist);
  margin-left: 2px;
}
.page-about .facts-label {
  font-size: 13px;
  color: var(--mist);
  line-height: 1.5;
}
.page-about .facts-note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
}
.page-about .facts-link {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 207, 0.5);
  padding-bottom: 3px;
}
.page-about .facts-link:hover,
.page-about .facts-link:focus-visible {
  color: var(--amber);
  border-color: var(--amber);
}

/* 覆盖与节奏 */
.page-about .about-coverage {
  background: var(--teal-900);
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
}
.page-about .coverage-lede {
  margin: 14px 0 0;
  color: var(--mist);
  line-height: 1.8;
  max-width: 72ch;
}
.page-about .coverage-table-wrap {
  margin-top: 26px;
  overflow-x: auto;
  border: 1px solid rgba(234, 246, 255, 0.16);
}
.page-about .coverage-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14px;
}
.page-about .coverage-table thead th {
  background: rgba(6, 19, 36, 0.55);
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(234, 246, 255, 0.22);
  white-space: nowrap;
}
.page-about .coverage-table tbody th {
  text-align: left;
  padding: 13px 14px;
  color: var(--ice);
  font-weight: 600;
  border-bottom: 1px solid rgba(234, 246, 255, 0.12);
  white-space: nowrap;
}
.page-about .coverage-table tbody td {
  padding: 13px 14px;
  color: var(--mist);
  border-bottom: 1px solid rgba(234, 246, 255, 0.12);
  line-height: 1.65;
}
.page-about .coverage-table tbody tr:last-child th,
.page-about .coverage-table tbody tr:last-child td {
  border-bottom: 0;
}
.page-about .coverage-table tbody tr:hover th,
.page-about .coverage-table tbody tr:hover td {
  background: rgba(53, 240, 207, 0.08);
  color: var(--ice);
}
.page-about .coverage-table .num {
  text-align: left;
  font-family: var(--font-mono);
  color: var(--ice);
  white-space: nowrap;
}
.page-about .coverage-more {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 76ch;
}

/* 合作 */
.page-about .about-partners {
  background: var(--wine-900);
  border-bottom: 1px solid var(--about-line);
}
.page-about .partners-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
  align-items: start;
}
.page-about .partners-lede {
  margin: 14px 0 0;
  color: rgba(234, 246, 255, 0.86);
  line-height: 1.85;
  font-size: 16px;
}
.page-about .partners-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  border-top: 1px solid rgba(234, 246, 255, 0.22);
}
.page-about .partners-list li {
  padding: 14px 0;
  border-bottom: 1px solid rgba(234, 246, 255, 0.22);
  color: rgba(234, 246, 255, 0.88);
  font-size: 15px;
  line-height: 1.8;
}
.page-about .partners-list strong {
  color: var(--amber);
  margin-right: 8px;
  font-weight: 700;
}
.page-about .partners-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}
.page-about .partners-figure {
  margin: 0;
}
.page-about .partners-figure .media-caption {
  color: rgba(234, 246, 255, 0.7);
}

/* 结尾 */
.page-about .about-cta {
  background: var(--ink-900);
  border-top: 1px solid var(--about-line);
}
.page-about .cta-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  align-items: center;
}
.page-about .cta-copy p {
  margin: 12px 0 0;
  color: var(--mist);
  line-height: 1.8;
  max-width: 60ch;
}
.page-about .cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 图片通用 */
.page-about img {
  max-width: 100%;
  height: auto;
  display: block;
}
.page-about .media-frame {
  border: 1px solid var(--about-line);
  background: var(--about-panel);
  overflow: hidden;
}
.page-about .media-frame img {
  width: 100%;
  object-fit: cover;
}

/* 平板及以上 */
@media (min-width: 720px) {
  .page-about .origin-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-bottom: 1px solid var(--about-line-soft);
  }
  .page-about .origin-cell {
    padding: 26px 22px 26px 0;
    border-bottom: 0;
    border-right: 1px solid var(--about-line-soft);
  }
  .page-about .origin-cell:last-child {
    border-right: 0;
    padding-right: 0;
  }
  .page-about .origin-cell + .origin-cell {
    padding-left: 22px;
  }
  .page-about .team-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
  }
  .page-about .cta-inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 40px;
  }
  .page-about .cta-actions {
    justify-content: flex-end;
  }
}

/* 桌面：左右分屏 + sticky 事实栏 */
@media (min-width: 1024px) {
  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.8fr);
    align-items: start;
  }
  .page-about .about-dossier {
    margin-top: 12px;
  }
  .page-about .about-body {
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: start;
    gap: 56px;
  }
  .page-about .about-facts {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
  .page-about .partners-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: center;
  }
}

@media (min-width: 1280px) {
  .page-about .about-body {
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition-duration: 0.01ms !important;
  }
  .page-about .track-item:hover .track-body {
    transform: none;
  }
}
<<<PAGE_CSS_END>>>