.page-about {
  --pg-accent: var(--accent-green);
  --pg-accent-orange: var(--accent-orange);
  --pg-bg-deep: var(--primary-bg);
  --pg-bg-card: var(--secondary-bg);
  --pg-bg-elevated: var(--card-bg);
  --pg-border: var(--border);
  --pg-text-high: var(--text-high);
  --pg-text-dim: var(--text-mid);
  --pg-text-faint: var(--text-low);
  --pg-grid-dot: rgba(0, 255, 135, 0.07);
  --pg-glow-green: rgba(0, 255, 135, 0.08);
  --pg-mono: var(--font-mono);
  position: relative;
  color: var(--pg-text-high);
  background: var(--pg-bg-deep);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
}
.page-about img {
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-about h1,
.page-about h2,
.page-about h3 {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.page-about p {
  margin: 0;
}
.page-about a {
  color: inherit;
  text-decoration: none;
}

/* ===== 面包屑 ===== */
.pg-breadcrumb {
  margin-bottom: 28px;
}
.pg-breadcrumb ol {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--pg-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--pg-text-dim);
  text-transform: uppercase;
}
.pg-breadcrumb a {
  color: var(--pg-text-dim);
  transition: color 0.24s ease;
}
.pg-breadcrumb a:hover {
  color: var(--pg-accent);
}
.pg-breadcrumb li[aria-current="page"] {
  color: var(--pg-accent);
}

/* ===== HERO ===== */
.pg-hero {
  position: relative;
  padding: calc(var(--header-h) + 48px) 0 64px;
  background-image: radial-gradient(circle at 1px 1px, var(--pg-grid-dot) 1px, transparent 0);
  background-size: 26px 26px;
}
.pg-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 14, 23, 0.2) 0%, rgba(10, 14, 23, 0.92) 100%);
  pointer-events: none;
}
.pg-hero::after {
  content: "";
  position: absolute;
  right: -160px;
  top: -80px;
  width: 560px;
  height: 560px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--pg-glow-green) 0%, transparent 62%);
  pointer-events: none;
}
.pg-hero .container {
  position: relative;
  z-index: 1;
}
.pg-hero__grid {
  display: grid;
  gap: 44px;
  align-items: center;
}
.pg-hero__kicker {
  margin-bottom: 16px;
  font-family: var(--pg-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--pg-accent);
  text-transform: uppercase;
}
.pg-hero h1 {
  max-width: 760px;
  font-size: 1.85rem;
  line-height: 1.22;
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}
.pg-hero__sep {
  margin: 0 0.12em;
  color: var(--pg-accent);
  font-weight: 400;
}
.pg-hero__lead {
  max-width: 580px;
  margin-bottom: 32px;
  color: var(--pg-text-dim);
  font-size: 1rem;
}
.pg-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.pg-hero__actions .button {
  min-width: 160px;
  justify-content: center;
}
.pg-hero__panel {
  position: relative;
  background: linear-gradient(135deg, rgba(31, 41, 55, 0.9) 0%, rgba(17, 24, 39, 0.96) 100%);
  border: 1px solid rgba(0, 255, 135, 0.18);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}
.pg-hero__panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 24px;
  right: 24px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--pg-accent), transparent);
}
.pg-hero__panel-head {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--pg-border);
  font-family: var(--pg-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--pg-text-dim);
}
.pg-hero__panel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--pg-accent);
  box-shadow: 0 0 0 3px rgba(0, 255, 135, 0.18);
}
.pg-hero__update-tag {
  margin-left: auto;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: rgba(255, 106, 0, 0.14);
  color: var(--pg-accent-orange);
  font-size: 11px;
  letter-spacing: 0.08em;
}
.pg-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 20px 0 18px;
  border-bottom: 1px solid rgba(45, 55, 72, 0.6);
}
.pg-hero__stat:last-of-type {
  border-bottom: 0;
}
.pg-hero__stat-label {
  font-family: var(--pg-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--pg-text-dim);
  text-transform: uppercase;
}
.pg-hero__stat-value {
  font-family: var(--pg-mono);
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--pg-accent);
  letter-spacing: -0.03em;
}
.pg-hero__stat-unit {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--pg-text-dim);
  margin-left: 6px;
}
.pg-hero__panel-foot {
  padding-top: 14px;
  font-family: var(--pg-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--pg-text-faint);
}

/* ===== 品牌简介 ===== */
.pg-intro {
  position: relative;
  padding: 72px 0 80px;
  background: var(--pg-bg-deep);
}
.pg-intro__grid {
  display: grid;
  gap: 40px;
  align-items: center;
}
.pg-intro__text .section-index {
  margin-bottom: 24px;
}
.pg-intro__text h2 {
  font-size: 1.7rem;
  margin-bottom: 20px;
  max-width: 560px;
}
.pg-intro__text p {
  color: var(--pg-text-dim);
  margin-bottom: 18px;
  max-width: 640px;
}
.pg-intro__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  font-family: var(--pg-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--pg-accent);
  transition: gap 0.24s ease;
}
.pg-intro__link:hover {
  gap: 14px;
}
.pg-intro__media {
  position: relative;
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(0, 255, 135, 0.12);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
  aspect-ratio: 16 / 9;
  background: var(--pg-bg-elevated);
}
.pg-intro__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ===== 发展历程 ===== */
.pg-timeline {
  position: relative;
  padding: 80px 0;
  background:
    linear-gradient(180deg, rgba(17, 24, 39, 0.4) 0%, rgba(10, 14, 23, 0) 18%),
    var(--pg-bg-deep);
}
.pg-timeline .section-index {
  margin-bottom: 24px;
}
.pg-timeline h2 {
  font-size: 1.7rem;
  margin-bottom: 52px;
  max-width: 680px;
}
.pg-timeline__wrap {
  display: grid;
  gap: 48px;
}
.pg-timeline__items {
  position: relative;
}
.pg-timeline__axis {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 11px;
  width: 2px;
  height: 100%;
  opacity: 0.8;
}
.pg-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 24px 1fr;
  gap: 16px;
  margin-bottom: 36px;
  align-items: start;
}
.pg-timeline__item:last-child {
  margin-bottom: 0;
}
.pg-timeline__node {
  position: relative;
  z-index: 1;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--pg-accent);
  box-shadow: 0 0 0 5px rgba(0, 255, 135, 0.16), 0 0 24px rgba(0, 255, 135, 0.35);
  margin-top: 18px;
  transition: box-shadow 0.28s ease, transform 0.28s ease;
}
.pg-timeline__item:hover .pg-timeline__node {
  box-shadow: 0 0 0 8px rgba(0, 255, 135, 0.12), 0 0 32px rgba(0, 255, 135, 0.5);
  transform: scale(1.08);
}
.pg-timeline__card {
  background: rgba(17, 24, 39, 0.92);
  border: 1px solid var(--pg-border);
  border-radius: var(--radius-md);
  padding: 22px 22px 24px;
  transition: transform 0.28s ease, border-color 0.28s ease, background 0.28s ease;
}
.pg-timeline__item:hover .pg-timeline__card {
  border-color: rgba(0, 255, 135, 0.34);
  background: rgba(31, 41, 55, 0.94);
  transform: translateY(-3px);
}
.pg-timeline__year {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--pg-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--pg-accent);
  background: rgba(0, 255, 135, 0.08);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
}
.pg-timeline__card h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}
.pg-timeline__card p {
  color: var(--pg-text-dim);
  font-size: 0.94rem;
}
.pg-timeline__aside {
  min-width: 0;
}
.pg-timeline__sticky {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.pg-timeline__data-card {
  background: linear-gradient(135deg, rgba(31, 41, 55, 0.95) 0%, rgba(17, 24, 39, 0.96) 100%);
  border: 1px solid rgba(0, 255, 135, 0.14);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
}
.pg-timeline__data-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(45, 55, 72, 0.7);
  font-family: var(--pg-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--pg-text-dim);
}
.pg-timeline__data-live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--pg-accent);
}
.pg-timeline__data-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--pg-accent);
  animation: pg-pulse 1.8s ease-in-out infinite;
}
@keyframes pg-pulse {
  0% { opacity: 1; box-shadow: 0 0 0 0 rgba(0, 255, 135, 0.5); }
  70% { opacity: 0.7; box-shadow: 0 0 0 8px rgba(0, 255, 135, 0); }
  100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0, 255, 135, 0); }
}
.pg-timeline__data-card dl {
  margin: 0;
}
.pg-timeline__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(45, 55, 72, 0.45);
}
.pg-timeline__row:last-child {
  border-bottom: 0;
}
.pg-timeline__row dt {
  font-size: 0.86rem;
  color: var(--pg-text-dim);
}
.pg-timeline__row dd {
  margin: 0;
  font-family: var(--pg-mono);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--pg-accent);
}
.pg-timeline__figure {
  position: relative;
  margin: 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(0, 255, 135, 0.1);
  aspect-ratio: 4 / 3;
  background: var(--pg-bg-elevated);
}
.pg-timeline__figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ===== 数据服务能力 ===== */
.pg-capability {
  position: relative;
  padding: 80px 0;
  background: var(--pg-bg-card);
}
.pg-capability .section-index {
  margin-bottom: 24px;
}
.pg-capability h2 {
  font-size: 1.7rem;
  margin-bottom: 12px;
}
.pg-capability__lead {
  max-width: 640px;
  margin-bottom: 44px;
  color: var(--pg-text-dim);
}
.pg-capability__grid {
  display: grid;
  gap: 18px;
}
.pg-capability__card {
  position: relative;
  background: var(--pg-bg-elevated);
  border: 1px solid var(--pg-border);
  border-radius: var(--radius-lg);
  padding: 26px 24px 28px;
  overflow: hidden;
  transition: transform 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease;
}
.pg-capability__card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 24px;
  right: 24px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 255, 135, 0.25), transparent);
  opacity: 0;
  transition: opacity 0.28s ease;
}
.pg-capability__card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 255, 135, 0.3);
  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.25);
}
.pg-capability__card:hover::after {
  opacity: 1;
}
.pg-capability__index {
  display: inline-block;
  margin-bottom: 18px;
  font-family: var(--pg-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--pg-text-faint);
}
.pg-capability__num {
  display: block;
  font-family: var(--pg-mono);
  font-size: 2.6rem;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.04em;
  color: var(--pg-accent);
  margin-bottom: 10px;
}
.pg-capability__label {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--pg-text-high);
  margin-bottom: 8px;
}
.pg-capability__card p {
  font-size: 0.88rem;
  color: var(--pg-text-dim);
  line-height: 1.65;
}

/* ===== 技术团队 ===== */
.pg-team {
  position: relative;
  padding: 80px 0;
  background: var(--pg-bg-deep);
}
.pg-team__grid {
  display: grid;
  gap: 40px;
  align-items: center;
}
.pg-team__media {
  position: relative;
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(0, 255, 135, 0.14);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
  aspect-ratio: 3 / 2;
  background: var(--pg-bg-elevated);
}
.pg-team__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.pg-team__content .section-index {
  margin-bottom: 24px;
}
.pg-team__content h2 {
  font-size: 1.7rem;
  margin-bottom: 20px;
}
.pg-team__content p {
  color: var(--pg-text-dim);
  margin-bottom: 16px;
  max-width: 600px;
}
.pg-team__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}
.pg-team__tags li {
  font-family: var(--pg-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--pg-accent);
  background: rgba(0, 255, 135, 0.07);
  border: 1px solid rgba(0, 255, 135, 0.16);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
}

/* ===== 资质与合作 ===== */
.pg-qualification {
  position: relative;
  padding: 88px 0 100px;
  background: var(--pg-bg-card);
  overflow: hidden;
}
.pg-qualification__inner {
  position: relative;
  z-index: 1;
}
.pg-qualification .section-index {
  margin-bottom: 24px;
}
.pg-qualification h2 {
  font-size: 1.7rem;
  margin-bottom: 40px;
}
.pg-qualification__grid {
  display: grid;
  gap: 18px;
}
.pg-qualification__item {
  position: relative;
  background: rgba(31, 41, 55, 0.8);
  border: 1px solid var(--pg-border);
  border-radius: var(--radius-lg);
  padding: 28px 26px;
  transition: transform 0.28s ease, border-color 0.28s ease, background 0.28s ease;
}
.pg-qualification__item:hover {
  transform: translateY(-3px);
  border-color: rgba(0, 255, 135, 0.3);
  background: rgba(31, 41, 55, 0.96);
}
.pg-qualification__index {
  display: inline-block;
  margin-bottom: 14px;
  font-family: var(--pg-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--pg-accent);
  background: rgba(0, 255, 135, 0.07);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
}
.pg-qualification__item h3 {
  font-size: 1.05rem;
  margin-bottom: 10px;
}
.pg-qualification__item p {
  font-size: 0.9rem;
  color: var(--pg-text-dim);
  line-height: 1.7;
}
.pg-qualification__cta {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 40px;
  padding: 30px 28px;
  border: 1px solid rgba(0, 255, 135, 0.16);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(0, 255, 135, 0.05), rgba(255, 106, 0, 0.04));
}
.pg-qualification__cta h3 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}
.pg-qualification__cta p {
  color: var(--pg-text-dim);
  font-size: 0.92rem;
}
.pg-qualification__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.pg-qualification__actions .button {
  min-width: 150px;
  justify-content: center;
}
.pg-qualification__tower {
  position: absolute;
  right: -50px;
  bottom: 0;
  width: 340px;
  height: auto;
  opacity: 0.8;
  pointer-events: none;
  z-index: 0;
}

/* ===== 桌面端布局 ===== */
@media (min-width: 640px) {
  .pg-hero {
    padding-top: calc(var(--header-h) + 56px);
  }
  .pg-hero h1 {
    font-size: 2.2rem;
  }
  .pg-capability__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pg-qualification__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (min-width: 1024px) {
  .pg-hero {
    padding: calc(var(--header-h) + 72px) 0 96px;
  }
  .pg-hero__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 80px;
  }
  .pg-hero h1 {
    font-size: 2.7rem;
    line-height: 1.18;
  }
  .pg-hero__lead {
    font-size: 1.05rem;
  }
  .pg-intro {
    padding: 100px 0 108px;
  }
  .pg-intro__grid {
    grid-template-columns: 1fr 1fr;
    gap: 72px;
  }
  .pg-intro__text h2,
  .pg-timeline h2,
  .pg-capability h2,
  .pg-team__content h2,
  .pg-qualification h2 {
    font-size: 2.1rem;
  }
  .pg-timeline {
    padding: 104px 0;
  }
  .pg-timeline__wrap {
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 64px;
    align-items: start;
  }
  .pg-timeline__aside {
    position: sticky;
    top: 88px;
    align-self: start;
  }
  .pg-timeline__item {
    grid-template-columns: 1fr 32px 1fr;
    gap: 0;
    margin-bottom: 44px;
  }
  .pg-timeline__axis {
    left: calc(50% - 1px);
    transform: none;
  }
  .pg-timeline__node {
    grid-column: 2;
    grid-row: 1;
    justify-self: center;
    align-self: center;
    margin-top: 0;
  }
  .pg-timeline__item--left .pg-timeline__card {
    grid-column: 1;
    grid-row: 1;
    justify-self: end;
    margin-right: 32px;
    text-align: right;
  }
  .pg-timeline__item--right .pg-timeline__card {
    grid-column: 3;
    grid-row: 1;
    justify-self: start;
    margin-left: 28px;
    text-align: left;
  }
  .pg-timeline__node::before {
    content: "";
    position: absolute;
    top: 50%;
    height: 1px;
    width: 32px;
    background: linear-gradient(90deg, rgba(0, 255, 135, 0.4), rgba(0, 255, 135, 0.1));
  }
  .pg-timeline__item--left .pg-timeline__node::before {
    right: 100%;
  }
  .pg-timeline__item--right .pg-timeline__node::before {
    left: 100%;
  }
  .pg-capability {
    padding: 100px 0;
  }
  .pg-capability__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
  .pg-team {
    padding: 100px 0;
  }
  .pg-team__grid {
    grid-template-columns: 1fr 1fr;
    gap: 64px;
  }
  .pg-qualification {
    padding: 108px 0 120px;
  }
  .pg-qualification__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  .pg-qualification__cta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 36px 40px;
  }
  .pg-qualification__actions {
    flex-shrink: 0;
  }
  .pg-qualification__tower {
    width: 460px;
    right: -20px;
  }
}