.page-about {
  --gold-rgb: 255, 204, 0;
  --green-rgb: 0, 200, 83;
  --orange-rgb: 255, 107, 0;
  --ice-rgb: 160, 231, 255;
  --expo-pad: clamp(1.5rem, 4vw, 4rem);
  position: relative;
  background:
    linear-gradient(180deg, var(--bg) 0%, var(--bg2) 100%);
  color: var(--text);
  font-family: var(--body-font);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-about .page-shell {
  position: relative;
  width: 100%;
}

.page-about .breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  padding-top: calc(var(--header-h) + 24px);
  padding-bottom: clamp(2rem, 5vw, 4rem);
  margin-bottom: 0;
  font-family: var(--mono-font);
  font-size: 0.8125rem;
  color: var(--muted);
}

.page-about .breadcrumb a {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease);
}

.page-about .breadcrumb a:hover {
  border-bottom-color: var(--ice);
}

.page-about .breadcrumb [aria-hidden="true"] {
  margin: 0 0.5rem;
  color: var(--gold);
}

.page-about .breadcrumb [aria-current="page"] {
  color: var(--gold);
}

.page-about .section-label {
  margin: 0 0 1rem;
  padding-left: 0.75rem;
  border-left: 3px solid var(--gold);
  font-family: var(--mono-font);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-about h2 {
  font-family: var(--heading-font);
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  line-height: 1.2;
  margin: 0 0 0.75rem;
}

/* 01 品牌故事 */
.page-about .story-hero {
  position: relative;
  border-bottom: 1px solid var(--line);
  margin-bottom: var(--space-section);
}

.page-about .story-hero::after {
  content: "01";
  position: absolute;
  top: 1rem;
  right: 0;
  z-index: 0;
  font-family: var(--mono-font);
  font-weight: 800;
  font-size: clamp(5rem, 14vw, 10rem);
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px rgba(255, 204, 0, 0.1);
  pointer-events: none;
}

.page-about .story-hero__shell {
  display: grid;
  gap: 2rem;
  align-items: center;
  padding-bottom: var(--space-section);
}

.page-about .story-hero__copy {
  position: relative;
  z-index: 1;
}

.page-about .story-hero__copy h1 {
  font-family: var(--heading-font);
  font-size: clamp(2rem, 6vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  margin: 0 0 1.5rem;
}

.page-about .h1-sub {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.62em;
  letter-spacing: 0.08em;
  color: var(--gold);
  -webkit-text-stroke: 1px rgba(255, 204, 0, 0.3);
}

.page-about .story-hero__lead {
  max-width: 42rem;
  margin: 0 0 1rem;
  padding-left: 1rem;
  border-left: 3px solid var(--gold);
  font-size: clamp(1.1rem, 2.4vw, 1.4rem);
  font-weight: 700;
  line-height: 1.55;
  color: var(--text);
}

.page-about .story-hero__body {
  max-width: 42rem;
  margin: 0 0 1.75rem;
  color: var(--muted);
  font-size: 0.975rem;
}

.page-about .story-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-about .btn-family {
  display: inline-block;
  padding: 0.8rem 1.5rem;
  border: 2px solid var(--gold);
  background: var(--gold);
  color: #000;
  font-family: var(--mono-font);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  transition: background 0.3s var(--ease), color 0.3s var(--ease), transform 0.2s var(--ease);
}

.page-about .btn-family:hover {
  transform: translateY(-2px);
}

.page-about .btn-family--ghost {
  background: transparent;
  color: var(--gold);
}

.page-about .btn-family--ghost:hover {
  background: var(--gold);
  color: #000;
}

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

.page-about .btn-family--outline:hover {
  background: var(--ice);
  color: #000;
}

.page-about .story-hero__visual {
  position: relative;
  z-index: 1;
  max-width: 480px;
  margin-left: auto;
  width: 100%;
}

.page-about .story-hero__frame {
  position: relative;
  padding: 0.75rem;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-about .story-hero__frame::before {
  content: "";
  position: absolute;
  top: -14px;
  right: -14px;
  width: 84px;
  height: 84px;
  border-top: 3px solid var(--gold);
  border-right: 3px solid var(--gold);
  z-index: 2;
}

.page-about .story-hero__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--bg2);
}

.page-about .story-hero__badge {
  position: absolute;
  bottom: -18px;
  left: 24px;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 1rem;
  background: var(--gold);
  color: #000;
  box-shadow: var(--shadow);
  animation: about-badge-glow 3.2s ease-in-out infinite;
}

@keyframes about-badge-glow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 204, 0, 0.35); }
  50% { box-shadow: 0 0 22px 5px rgba(255, 204, 0, 0.15); }
}

.page-about .story-hero__badge-num {
  font-family: var(--mono-font);
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1;
}

.page-about .story-hero__badge-label {
  font-family: var(--body-font);
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1.35;
}

/* 装饰轨迹带 */
.page-about .grid-trail {
  display: block;
  width: 100%;
  padding: 0 var(--space-outer);
  margin-bottom: var(--space-section);
  opacity: 0.85;
}

.page-about .grid-trail svg {
  display: block;
  width: 100%;
  height: 40px;
}

/* 02 关键数据 */
.page-about .key-stats {
  margin-bottom: var(--space-section);
  padding: 2.5rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
}

.page-about .section-head {
  margin-bottom: 2rem;
}

.page-about .section-head__note {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.page-about .stats-grid {
  gap: 0;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-about .stats-grid .metric-card {
  min-height: 150px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.5rem 1.25rem;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.18);
  transition: background 0.3s var(--ease);
}

.page-about .stats-grid .metric-card:hover {
  background: rgba(0, 0, 0, 0.38);
}

.page-about .metric-card__value {
  display: block;
  font-family: var(--mono-font);
  font-size: clamp(1.8rem, 4.6vw, 2.7rem);
  font-weight: 700;
  line-height: 1;
  color: var(--green);
}

.page-about .metric-card--gold .metric-card__value {
  color: var(--gold);
}

.page-about .metric-card--ice .metric-card__value {
  color: var(--ice);
}

.page-about .metric-card--orange .metric-card__value {
  color: var(--orange);
}

.page-about .metric-card__label {
  display: block;
  margin-top: 0.7rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}

.page-about .metric-card__trend {
  display: block;
  margin-top: 0.3rem;
  font-family: var(--mono-font);
  font-size: 0.75rem;
  color: var(--muted);
}

/* 03 数据服务能力 */
.page-about .service-cap {
  margin-bottom: var(--space-section);
}

.page-about .service-cap__layout {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

.page-about .service-cap__copy h2 {
  margin-bottom: 1rem;
}

.page-about .text-swing {
  color: var(--gold);
}

.page-about .service-cap__lead {
  margin-bottom: 1.5rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.page-about .service-cap__versions {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .version-item {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1rem;
  padding: 1rem 0;
  align-items: baseline;
  border-bottom: 1px solid var(--line);
}

.page-about .version-item__tag {
  align-self: start;
  padding: 0.2rem 0;
  border: 1px solid var(--gold);
  background: rgba(255, 204, 0, 0.1);
  font-family: var(--mono-font);
  font-size: 1.15rem;
  font-weight: 700;
  text-align: center;
  color: var(--gold);
}

.page-about .version-item p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.page-about .service-cap__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-about .service-cap__tags span {
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  font-family: var(--mono-font);
  font-size: 0.8rem;
  color: var(--muted);
}

.page-about .service-cap__visual {
  position: relative;
}

.page-about .service-cap__visual::after {
  content: "";
  position: absolute;
  bottom: -12px;
  left: -12px;
  width: 42%;
  height: 3px;
  background: var(--green);
}

.page-about .service-cap__visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

/* 04 发展里程碑 */
.page-about .milestones {
  margin-bottom: var(--space-section);
  padding: 2.5rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(0, 200, 83, 0.06), transparent 55%);
}

.page-about .milestones .section-head {
  max-width: 540px;
}

.page-about .timeline {
  list-style: none;
  margin: 2.5rem 0 0;
  padding: 0;
  position: relative;
  --line-x: 0.9rem;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: var(--line-x);
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--gold), var(--green));
  opacity: 0.45;
}

.page-about .timeline__item {
  position: relative;
  display: flex;
  flex-direction: column;
  padding-left: calc(var(--line-x) + 2rem);
  padding-bottom: 2rem;
}

.page-about .timeline__item:last-child {
  padding-bottom: 0;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: calc(var(--line-x) - 0.375rem);
  top: 1.4rem;
  width: 0.75rem;
  height: 0.75rem;
  border: 2px solid var(--bg2);
  background: var(--gold);
  box-shadow: 0 0 0 2px var(--gold);
}

.page-about .timeline__marker {
  margin-bottom: 0.4rem;
  font-family: var(--mono-font);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-about .timeline__content {
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-about .timeline__content h3 {
  margin: 0 0 0.5rem;
  font-family: var(--heading-font);
  font-size: 1.25rem;
  line-height: 1.3;
}

.page-about .timeline__content p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* 05 资质认证与荣誉 */
.page-about .credentials {
  margin-bottom: var(--space-section);
}

.page-about .credentials__layout {
  display: grid;
  gap: 2.5rem;
  align-items: start;
}

.page-about .credentials__intro p {
  color: var(--muted);
}

.page-about .credentials__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .cred-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.25rem;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-about .cred-item__badge {
  flex: 0 0 3.5rem;
  margin-top: 0.2rem;
  padding: 0.5rem 0.3rem;
  background: var(--gold);
  font-family: var(--mono-font);
  font-size: 0.8rem;
  font-weight: 700;
  text-align: center;
  color: #000;
}

.page-about .cred-item__body h3 {
  margin: 0 0 0.35rem;
  font-family: var(--heading-font);
  font-size: 1.05rem;
}

.page-about .cred-item__body p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.page-about .credentials__footnote {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-family: var(--mono-font);
  font-size: 0.8rem;
  color: var(--muted);
}

/* 06 团队与本地化 */
.page-about .local-team {
  padding: 2.5rem 0 calc(var(--space-section) + 2rem);
  border-top: 1px solid var(--line);
  background:
    radial-gradient(circle at 8% 20%, rgba(160, 231, 255, 0.08), transparent 36%),
    linear-gradient(180deg, transparent, rgba(0, 200, 83, 0.05));
}

.page-about .local-team__layout {
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

.page-about .local-team__visual {
  position: relative;
}

.page-about .local-team__visual::after {
  content: "";
  position: absolute;
  top: -12px;
  right: -12px;
  width: 84px;
  height: 84px;
  border-top: 3px solid var(--ice);
  border-right: 3px solid var(--ice);
}

.page-about .local-team__visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
}

.page-about .local-team__copy h2 {
  margin-bottom: 1rem;
}

.page-about .local-team__copy p {
  margin-bottom: 1rem;
  color: var(--muted);
}

.page-about .local-team__roles {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.5rem 0;
}

.page-about .role-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--line);
  background: var(--panel2);
  font-size: 0.9rem;
  color: var(--text);
}

.page-about .role-chip__num {
  font-family: var(--mono-font);
  font-size: 1rem;
  font-weight: 700;
  color: var(--gold);
}

@media (prefers-reduced-motion: reduce) {
  .page-about .story-hero__badge {
    animation: none;
  }
}

@media (min-width: 768px) {
  .page-about .story-hero__shell {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3rem;
  }

  .page-about .service-cap__layout {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3.5rem;
  }

  .page-about .credentials__layout {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 3rem;
  }

  .page-about .local-team__layout {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }

  .page-about .stats-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .timeline {
    --line-x: 50%;
  }

  .page-about .timeline::before {
    left: 50%;
    transform: translateX(-1px);
  }

  .page-about .timeline__item {
    width: 50%;
    padding-left: 0;
  }

  .page-about .timeline__item:nth-child(odd) {
    padding-right: 3rem;
    text-align: right;
  }

  .page-about .timeline__item:nth-child(even) {
    margin-left: 50%;
    padding-left: 3rem;
  }

  .page-about .timeline__item:nth-child(odd)::before {
    left: auto;
    right: -0.525rem;
  }

  .page-about .timeline__item:nth-child(even)::before {
    left: -0.525rem;
    right: auto;
  }

  .page-about .timeline__item:nth-child(odd) .timeline__marker {
    text-align: right;
  }
}

@media (min-width: 1100px) {
  .page-about .story-hero__shell {
    gap: 4rem;
  }

  .page-about .service-cap__layout {
    gap: 5rem;
  }

  .page-about .story-hero__visual {
    max-width: 520px;
  }

  .page-about .local-team__layout {
    gap: 4rem;
  }
}