.page-about {
  --accent-soft: rgba(0, 255, 136, 0.12);
  --accent-border: rgba(0, 255, 136, 0.45);
  --line-dim: rgba(167, 184, 201, 0.28);
  --page-bg-deep: #0A1128;
  --card-bg: #0D1B2A;
  --card-border: #1F3A5F;
  --light-bg: #F2F6FA;
  --light-card: #FFFFFF;
  --text-dark: #0B1D3A;
  --text-muted-dark: #52667A;
  background: var(--page-bg-deep);
}

.page-about .breadcrumb {
  padding-top: 24px;
  font-size: 14px;
  color: var(--color-text-dim);
}

.page-about .breadcrumb a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.page-about .breadcrumb a:hover {
  color: var(--color-accent-orange);
}

.page-about .breadcrumb__sep {
  margin: 0 10px;
  color: var(--color-border);
}

/* ---------- 品牌基因 ---------- */

.page-about .brand-gene {
  padding: 48px 0 64px;
  background:
    linear-gradient(135deg, rgba(0, 255, 136, 0.05) 0%, transparent 32%),
    var(--page-bg-deep);
  border-bottom: 1px solid var(--color-border);
}

.page-about .brand-gene__grid {
  display: grid;
  gap: 40px;
  align-items: start;
}

.page-about .brand-gene__intro h1 {
  margin-top: 16px;
  font-family: var(--font-heading);
  font-size: 36px;
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--color-text-light);
  transform: skewY(-1.2deg);
  max-width: 680px;
}

.page-about .brand-gene__lead {
  margin-top: 24px;
  font-size: 18px;
  line-height: 1.7;
  color: var(--color-accent);
  font-weight: 600;
  max-width: 600px;
}

.page-about .brand-gene__text {
  margin-top: 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--color-text-dim);
  max-width: 620px;
}

.page-about .brand-gene__text strong {
  color: var(--color-text-light);
  font-weight: 600;
}

.page-about .brand-gene__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.page-about .brand-gene__trust {
  margin-top: 28px;
  padding-left: 14px;
  border-left: 3px solid var(--color-accent);
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-dim);
  max-width: 600px;
}

.page-about .brand-gene__data {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.page-about .stat-card {
  position: relative;
  min-height: 150px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 20px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.page-about .stat-card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  background: var(--color-accent);
  border-radius: 2px;
  transition: background var(--transition-fast);
}

.page-about .stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-border);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
}

.page-about .stat-card__label {
  font-size: 13px;
  color: var(--color-text-dim);
  margin-bottom: 8px;
}

.page-about .stat-card__num {
  font-family: var(--font-mono);
  font-size: 34px;
  line-height: 1.15;
  color: var(--color-accent);
  letter-spacing: -0.02em;
}

.page-about .stat-card__desc {
  margin-top: 8px;
  font-size: 13px;
  color: var(--color-text-dim);
  line-height: 1.5;
}

/* ---------- 时间线 ---------- */

.page-about .timeline-section {
  background: var(--light-bg);
  padding: 64px 0 72px;
}

.page-about .timeline-section__header h2,
.page-about .ecosystem-section__header h2 {
  color: var(--text-dark);
}

.page-about .timeline-section__subtitle,
.page-about .ecosystem-section__subtitle {
  color: var(--text-muted-dark);
  margin-top: 8px;
  max-width: 560px;
}

.page-about .timeline-section__header h2,
.page-about .ecosystem-section__header h2 {
  margin-top: 12px;
  font-family: var(--font-heading);
  font-size: 32px;
  line-height: 1.2;
}

.page-about .timeline-layout {
  display: grid;
  gap: 40px;
  margin-top: 40px;
}

.page-about .timeline {
  position: relative;
}

.page-about .timeline__row {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
  position: relative;
  padding-bottom: 36px;
}

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

.page-about .timeline__row::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 14px;
  bottom: -2px;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-accent), rgba(0, 255, 136, 0.05));
  border-radius: 1px;
}

.page-about .timeline__row:last-child::before {
  display: none;
}

.page-about .timeline__dot {
  width: 18px;
  height: 18px;
  margin-top: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 5px var(--accent-soft), 0 0 14px rgba(0, 255, 136, 0.5);
  z-index: 2;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.page-about .timeline__row:hover .timeline__dot {
  transform: scale(1.35);
  box-shadow: 0 0 0 7px var(--accent-soft), 0 0 22px rgba(0, 255, 136, 0.7);
}

.page-about .timeline__content {
  background: var(--light-card);
  border: 1px solid #DCE4EE;
  border-radius: var(--radius-card);
  padding: 20px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.page-about .timeline__row:hover .timeline__content {
  border-color: var(--color-accent);
  box-shadow: 0 6px 18px rgba(11, 29, 58, 0.08);
}

.page-about .timeline__year {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--color-accent-orange);
  letter-spacing: 0.04em;
  font-weight: 500;
}

.page-about .timeline__content h3 {
  margin-top: 6px;
  font-family: var(--font-heading);
  font-size: 20px;
  color: var(--text-dark);
}

.page-about .timeline__content p {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-muted-dark);
}

.page-about .growth-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  padding: 20px;
  align-self: start;
  position: sticky;
  top: calc(var(--header-offset) + 16px);
}

.page-about .growth-card__figure {
  margin: 0;
}

.page-about .growth-card__figure img {
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 8px;
  display: block;
}

.page-about .growth-card__figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--color-text-dim);
  line-height: 1.5;
}

.page-about .growth-card__stats {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  border-top: 1px solid var(--color-border);
}

.page-about .growth-card__stats li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid rgba(31, 58, 95, 0.6);
}

.page-about .growth-card__stats span {
  font-size: 14px;
  color: var(--color-text-dim);
}

.page-about .growth-card__stats strong {
  font-family: var(--font-mono);
  font-size: 20px;
  color: var(--color-accent);
}

.page-about .growth-card__note {
  margin-top: 14px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--color-text-dim);
}

/* ---------- 团队画像 ---------- */

.page-about .team-section {
  background:
    linear-gradient(315deg, rgba(255, 107, 53, 0.05) 0%, transparent 40%),
    var(--page-bg-deep);
  padding: 72px 0;
}

.page-about .team-section__grid {
  display: grid;
  gap: 40px;
  align-items: center;
}

.page-about .team-content h2 {
  margin-top: 12px;
  font-family: var(--font-heading);
  font-size: 32px;
  line-height: 1.2;
  color: var(--color-text-light);
}

.page-about .team-content__lead {
  margin-top: 18px;
  font-size: 18px;
  font-weight: 600;
  color: var(--color-accent);
}

.page-about .team-content__text {
  margin-top: 14px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-dim);
  max-width: 560px;
}

.page-about .team-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 28px;
  max-width: 480px;
}

.page-about .team-stats__item {
  padding: 20px;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.page-about .team-stats__item:hover {
  border-color: var(--accent-border);
  transform: translateY(-3px);
}

.page-about .team-stats__label {
  font-size: 13px;
  color: var(--color-text-dim);
}

.page-about .team-stats__num {
  font-family: var(--font-mono);
  font-size: 44px;
  line-height: 1.2;
  color: var(--color-accent);
}

.page-about .team-stats__unit {
  font-size: 14px;
  color: var(--color-text-dim);
  margin-top: 4px;
}

.page-about .team-tags {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  max-width: 560px;
}

.page-about .team-tags li {
  font-size: 13px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--color-border);
  color: var(--color-text-dim);
  background: rgba(13, 27, 42, 0.6);
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.page-about .team-tags li:hover {
  color: var(--page-bg-deep);
  background: var(--color-accent);
  border-color: var(--color-accent);
}

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

.page-about .team-figure::before {
  content: "";
  position: absolute;
  inset: -12px auto auto -12px;
  width: 120px;
  height: 120px;
  border: 1px solid var(--accent-border);
  border-radius: 4px;
  opacity: 0.6;
  pointer-events: none;
}

.page-about .team-figure img {
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-card);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
  display: block;
}

.page-about .team-figure figcaption {
  margin-top: 12px;
  font-size: 13px;
  color: var(--color-text-dim);
}

/* ---------- 资质认证与荣誉 ---------- */

.page-about .honor-section {
  background:
    radial-gradient(circle at 90% 10%, rgba(0, 255, 136, 0.06) 0%, transparent 38%),
    var(--page-bg-deep);
  padding: 72px 0;
  border-top: 1px solid var(--color-border);
}

.page-about .honor-section__header {
  max-width: 620px;
}

.page-about .honor-section__header h2 {
  margin-top: 12px;
  font-family: var(--font-heading);
  font-size: 32px;
  line-height: 1.2;
  color: var(--color-text-light);
}

.page-about .honor-section__subtitle {
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-text-dim);
}

.page-about .honor-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 40px;
}

.page-about .flip-card {
  perspective: 900px;
  height: 210px;
}

.page-about .flip-card__inner {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.5s ease;
}

.page-about .flip-card:hover .flip-card__inner,
.page-about .flip-card:focus-within .flip-card__inner {
  transform: rotateY(180deg);
}

.page-about .flip-card__front,
.page-about .flip-card__back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  border-radius: var(--radius-card);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.page-about .flip-card__front {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
}

.page-about .flip-card__back {
  background: var(--color-bg-deep-2);
  border: 1px solid var(--accent-border);
  transform: rotateY(180deg);
}

.page-about .flip-card__back p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-text-dim);
}

.page-about .flip-card__icon {
  width: 40px;
  height: 40px;
  margin-bottom: 12px;
}

.page-about .flip-card__front h3 {
  font-family: var(--font-heading);
  font-size: 18px;
  color: var(--color-text-light);
  line-height: 1.3;
}

.page-about .flip-card__front p {
  margin-top: 6px;
  font-size: 13px;
  color: var(--color-text-dim);
}

.page-about .honor-section__figure {
  margin: 40px 0 0;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-card);
  padding: 16px;
}

.page-about .honor-section__figure img {
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 8px;
  display: block;
}

.page-about .honor-section__figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--color-text-dim);
}

/* ---------- 合作生态 ---------- */

.page-about .ecosystem-section {
  background: var(--light-bg);
  padding: 72px 0;
}

.page-about .ecosystem-cards {
  display: grid;
  gap: 16px;
  margin-top: 36px;
}

.page-about .ecosystem-card {
  position: relative;
  background: var(--light-card);
  border: 1px solid #DCE4EE;
  border-radius: var(--radius-card);
  padding: 28px;
  transition: border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  overflow: hidden;
}

.page-about .ecosystem-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-accent-orange));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.page-about .ecosystem-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-border);
  box-shadow: 0 10px 26px rgba(11, 29, 58, 0.10);
}

.page-about .ecosystem-card:hover::before {
  opacity: 1;
}

.page-about .ecosystem-card__num {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-accent-orange);
  letter-spacing: 0.04em;
}

.page-about .ecosystem-card h3 {
  margin-top: 10px;
  font-family: var(--font-heading);
  font-size: 22px;
  color: var(--text-dark);
}

.page-about .ecosystem-card p {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-muted-dark);
}

.page-about .tag-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
  padding: 0;
}

.page-about .tag-list .tag {
  font-size: 12px;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  background: rgba(0, 255, 136, 0.10);
  border: 1px solid rgba(0, 200, 83, 0.20);
  color: #0A5540;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.page-about .tag-list .tag:hover {
  background: rgba(255, 107, 53, 0.12);
  border-color: rgba(255, 107, 53, 0.35);
}

.page-about .ecosystem-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 36px;
}

.page-about .ecosystem-tags__item {
  font-size: 14px;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  background: var(--light-card);
  border: 1px solid #DCE4EE;
  color: var(--text-dark);
  font-weight: 500;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.page-about .ecosystem-tags__item:hover {
  background: var(--color-accent-orange);
  border-color: var(--color-accent-orange);
  color: #FFFFFF;
  transform: translateY(-2px);
}

.page-about .ecosystem-section__note {
  margin-top: 36px;
  padding: 20px;
  background: var(--page-bg-deep);
  border-left: 4px solid var(--color-accent);
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-text-dim);
}

.page-about .ecosystem-section__note a {
  color: var(--color-accent);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.page-about .ecosystem-section__note a:hover {
  color: var(--color-accent-orange);
  border-bottom-color: var(--color-accent-orange);
}

/* ---------- 响应式增强 ---------- */

@media (min-width: 720px) {
  .page-about .brand-gene {
    padding: 64px 0 80px;
  }

  .page-about .brand-gene__intro h1 {
    font-size: 48px;
  }

  .page-about .timeline-section {
    padding: 80px 0;
  }

  .page-about .timeline-section__header h2,
  .page-about .team-content h2,
  .page-about .honor-section__header h2,
  .page-about .ecosystem-section__header h2 {
    font-size: 40px;
  }

  .page-about .timeline__row {
    grid-template-columns: 64px 1fr;
  }

  .page-about .timeline__row::before {
    left: 31px;
  }

  .page-about .timeline__dot {
    width: 20px;
    height: 20px;
    margin-top: 10px;
  }

  .page-about .team-section,
  .page-about .honor-section,
  .page-about .ecosystem-section {
    padding: 88px 0;
  }

  .page-about .honor-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .flip-card {
    height: 220px;
  }

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

  .page-about .ecosystem-card {
    padding: 30px 26px;
  }
}

@media (min-width: 1080px) {
  .page-about .brand-gene__grid {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 0.85fr);
    gap: 56px;
  }

  .page-about .brand-gene__intro h1 {
    font-size: 58px;
    max-width: 760px;
  }

  .page-about .timeline-layout {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.9fr);
    gap: 48px;
    align-items: start;
  }

  .page-about .team-section__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.95fr);
    gap: 72px;
  }

  .page-about .team-figure img {
    border-radius: 16px;
  }

  .page-about .honor-section__figure {
    display: grid;
    grid-template-columns: 260px 1fr;
    align-items: center;
    gap: 24px;
  }
}