.page-about {
  --about-line: rgba(209, 167, 47, 0.28);
  background: var(--green-950);
}

/* ---------- 区块节奏 ---------- */
.page-about .about-creed,
.page-about .about-timeline,
.page-about .about-data,
.page-about .about-team,
.page-about .about-community,
.page-about .about-promise {
  padding-block: 3.5rem 4rem;
}

.page-about .about-gold-num {
  font-family: var(--font-mono);
  font-size: 1.12em;
  color: var(--gold-400);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  isolation: isolate;
  display: flex;
  align-items: center;
  min-height: 540px;
  overflow: hidden;
  background: var(--green-950);
  border-bottom: 4px solid var(--gold-600);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(100deg, rgba(7, 26, 16, 0.94) 0%, rgba(12, 46, 31, 0.78) 52%, rgba(232, 181, 61, 0.16) 130%);
}

.page-about .about-hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.page-about .about-hero-inner {
  position: relative;
  width: 100%;
  padding-block: 4.5rem 3.5rem;
}

.page-about .about-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.page-about .about-breadcrumb a {
  color: var(--gray);
  text-decoration: none;
  transition: color 0.15s var(--ease);
}

.page-about .about-breadcrumb a:hover,
.page-about .about-breadcrumb a:focus-visible {
  color: var(--gold-300);
}

.page-about .about-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(2.1rem, 5vw, 3.6rem);
  line-height: 1.05;
  letter-spacing: 0.02em;
  color: var(--white);
  margin: 0.9rem 0 0.4rem;
  text-transform: uppercase;
}

.page-about .about-hero-slogan {
  font-family: var(--font-head);
  font-size: clamp(2.7rem, 7vw, 5.2rem);
  line-height: 0.95;
  color: var(--gold-400);
  text-shadow: 0 4px 18px rgba(232, 181, 61, 0.28);
  margin: 0 0 1.4rem;
}

.page-about .about-hero-desc {
  max-width: 42rem;
  color: var(--gray);
  font-size: clamp(0.95rem, 1.3vw, 1.1rem);
  line-height: 1.75;
  margin-bottom: 1.8rem;
}

.page-about .about-hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-hero-badges a.badge {
  text-decoration: none;
}

/* ---------- 品牌信条 ---------- */
.page-about .about-creed {
  background:
    repeating-linear-gradient(-35deg, transparent 0 30px, rgba(232, 181, 61, 0.035) 30px 31px),
    linear-gradient(180deg, var(--green-900), var(--green-950));
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-creed-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.4rem;
}

.page-about .about-creed-anchor,
.page-about .timeline-anchor {
  align-self: start;
}

.page-about .about-creed-anchor h2,
.page-about .timeline-anchor h2 {
  font-family: var(--font-head);
  font-size: clamp(1.9rem, 3.4vw, 2.7rem);
  line-height: 1.12;
  color: var(--white);
  margin: 0.5rem 0 0.9rem;
}

.page-about .about-creed-anchor > p:not(.eyelet),
.page-about .timeline-anchor > p:not(.eyelet) {
  color: var(--gray);
  line-height: 1.7;
  margin-bottom: 1.2rem;
}

.page-about .about-creed-list {
  display: grid;
  gap: 1.1rem;
}

.page-about .creed-item {
  position: relative;
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: 0.8rem 1rem;
  padding: 1.4rem 1.5rem;
  background: var(--green-700);
  border: 2px solid transparent;
  transition: border-color 0.15s var(--ease), transform 0.15s var(--ease);
}

.page-about .creed-item .li-no {
  grid-row: span 2;
  font-size: 1rem;
  color: var(--gold-400);
}

.page-about .creed-item h3 {
  font-family: var(--font-head);
  font-size: 1.3rem;
  color: var(--white);
  margin: 0;
}

.page-about .creed-item p {
  color: var(--gray);
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 0;
}

.page-about .creed-item:hover,
.page-about .creed-item:focus-within {
  border-color: var(--gold-600);
  transform: translateY(-3px);
}

/* ---------- 发展时间线 ---------- */
.page-about .about-timeline {
  background:
    repeating-linear-gradient(35deg, transparent 0 30px, rgba(232, 181, 61, 0.028) 30px 31px),
    linear-gradient(180deg, var(--green-950), var(--green-900));
}

.page-about .about-timeline-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.4rem;
}

.page-about .timeline-anchor .badge {
  margin-top: 0.2rem;
}

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

.page-about .timeline-wrap::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--gold-400), rgba(232, 181, 61, 0.16));
}

.page-about .timeline-item {
  position: relative;
  padding-left: 40px;
  margin-bottom: 2.2rem;
}

.page-about .timeline-item:last-child {
  margin-bottom: 0;
}

.page-about .timeline-node {
  position: absolute;
  left: -9px;
  top: 22px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--gold-400);
  border: 4px solid var(--green-950);
  box-shadow: 0 0 0 2px var(--gold-600);
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-about .timeline-item:hover .timeline-node {
  transform: scale(1.35);
  box-shadow: 0 0 0 4px var(--gold-600), 0 0 20px rgba(232, 181, 61, 0.55);
}

.page-about .timeline-card {
  padding: 1.4rem 1.5rem;
  background: var(--green-700);
  border: 2px solid transparent;
  transition: border-color 0.15s var(--ease), transform 0.15s var(--ease);
}

.page-about .timeline-item:hover .timeline-card {
  border-color: var(--gold-600);
  transform: translateY(-2px);
}

.page-about .timeline-period {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold-400);
  background: var(--green-950);
  border: 1px solid var(--gold-600);
  padding: 0.25rem 0.65rem;
}

.page-about .timeline-card h3 {
  font-family: var(--font-head);
  font-size: 1.28rem;
  color: var(--white);
  margin: 0.7rem 0 0.45rem;
}

.page-about .timeline-card p {
  color: var(--gray);
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 0 0 0.6rem;
}

.page-about .timeline-card p:last-child {
  margin-bottom: 0;
}

.page-about .timeline-link {
  display: inline-block;
  color: var(--gold-300);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: rgba(243, 212, 119, 0.35);
  text-underline-offset: 4px;
  transition: color 0.15s var(--ease), text-decoration-color 0.15s var(--ease);
}

.page-about .timeline-link:hover,
.page-about .timeline-link:focus-visible {
  color: var(--gold-400);
  text-decoration-color: var(--gold-400);
}

/* ---------- 数据服务全景 ---------- */
.page-about .about-data {
  background: var(--green-950);
  border-block: 1px solid var(--about-line);
}

.page-about .about-data-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  align-items: center;
  margin-top: 2.2rem;
}

.page-about .about-data-visual img,
.page-about .about-team-visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 2px solid var(--gold-600);
}

.page-about .about-data-content .list-index {
  display: grid;
  gap: 1rem;
  margin: 0;
  padding: 0;
}

.page-about .about-data-content .list-index li {
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: 0.8rem 1rem;
  padding: 1.2rem 1.3rem;
  background: var(--green-700);
  border: 2px solid transparent;
  transition: border-color 0.15s var(--ease), transform 0.15s var(--ease);
}

.page-about .about-data-content .list-index li:hover {
  border-color: var(--gold-600);
  transform: translateX(4px);
}

.page-about .about-data-content .li-no {
  color: var(--gold-400);
}

.page-about .about-data-content h3 {
  font-family: var(--font-head);
  font-size: 1.1rem;
  color: var(--gold-300);
  margin: 0 0 0.3rem;
}

.page-about .about-data-content p {
  color: var(--gray);
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 0;
}

/* ---------- 团队与组织 ---------- */
.page-about .about-team {
  background: var(--green-900);
}

.page-about .about-team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.4rem;
  align-items: center;
}

.page-about .about-team-visual img {
  aspect-ratio: 16 / 9;
}

.page-about .about-team-intro {
  color: var(--gray);
  line-height: 1.7;
  margin: 1rem 0 1.5rem;
}

.page-about .team-lines {
  display: grid;
  gap: 1rem;
  margin: 0 0 2rem;
  padding: 0;
  list-style: none;
}

.page-about .team-lines li {
  display: grid;
  grid-template-columns: 2.4rem 1fr;
  gap: 0.8rem 1rem;
  padding: 1.2rem 1.3rem;
  background: var(--green-700);
  border: 2px solid transparent;
  transition: border-color 0.15s var(--ease), transform 0.15s var(--ease);
}

.page-about .team-lines li:hover {
  border-color: var(--gold-600);
  transform: translateX(4px);
}

.page-about .team-lines .li-no {
  color: var(--gold-400);
}

.page-about .team-lines h3 {
  font-family: var(--font-head);
  font-size: 1.1rem;
  color: var(--white);
  margin: 0 0 0.3rem;
}

.page-about .team-lines p {
  color: var(--gray);
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 0;
}

/* ---------- 行业认同 ---------- */
.page-about .about-community {
  background:
    radial-gradient(circle at 85% 20%, rgba(232, 181, 61, 0.08), transparent 40%),
    var(--green-950);
  border-block: 1px solid var(--about-line);
}

.page-about .community-cards {
  margin-top: 2.4rem;
}

.page-about .community-card {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  padding: 1.6rem 1.5rem;
  background: var(--green-700);
  border: 2px solid transparent;
  transition: border-color 0.15s var(--ease), transform 0.15s var(--ease);
}

.page-about .community-card:hover {
  border-color: var(--gold-600);
  transform: translateY(-3px);
}

.page-about .community-card h3 {
  font-family: var(--font-head);
  font-size: 1.3rem;
  color: var(--white);
  margin: 0;
}

.page-about .community-card p {
  color: var(--gray);
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 0;
}

.page-about .community-link {
  margin-top: auto;
  align-self: flex-start;
  color: var(--gold-300);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--gold-600);
  padding-bottom: 0.2rem;
  transition: color 0.15s var(--ease), border-color 0.15s var(--ease);
}

.page-about .community-link:hover,
.page-about .community-link:focus-visible {
  color: var(--gold-400);
  border-color: var(--gold-400);
}

/* ---------- 服务承诺 ---------- */
.page-about .about-promise {
  background: var(--green-950);
}

.page-about .about-promise-panel {
  display: grid;
  gap: 1.3rem;
  padding: 2rem 1.8rem;
  background: linear-gradient(135deg, rgba(232, 181, 61, 0.14), rgba(232, 181, 61, 0.04));
  border: 2px solid var(--gold-600);
}

.page-about .about-promise-panel h2 {
  font-family: var(--font-head);
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  color: var(--white);
  margin: 0.4rem 0 0;
}

.page-about .about-promise-panel > p {
  color: var(--gray);
  line-height: 1.75;
  margin: 0;
}

.page-about .about-promise-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 760px) {
  .page-about .about-creed-grid {
    grid-template-columns: 280px 1fr;
    gap: 3rem;
  }

  .page-about .about-creed-anchor,
  .page-about .timeline-anchor {
    position: sticky;
    top: calc(var(--header-h) + 1.5rem);
  }

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

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

  .page-about .about-promise-panel {
    grid-template-columns: 1fr 1.5fr;
    align-items: center;
    padding: 2.4rem;
  }

  .page-about .about-promise-actions {
    grid-column: 1 / -1;
  }
}

/* ---------- 桌面端 ---------- */
@media (min-width: 960px) {
  .page-about .about-timeline-layout {
    grid-template-columns: 280px 1fr;
    gap: 3rem;
  }

  .page-about .timeline-wrap {
    padding-left: 0;
  }

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

  .page-about .timeline-item {
    display: flex;
    padding-left: 0;
  }

  .page-about .timeline-item:nth-child(odd) {
    justify-content: flex-start;
  }

  .page-about .timeline-item:nth-child(even) {
    justify-content: flex-end;
  }

  .page-about .timeline-card {
    width: calc(50% - 3.2rem);
    flex-shrink: 0;
  }

  .page-about .timeline-node {
    left: calc(50% - 9px);
  }
}