.page-about {
  --about-card-bg: rgba(12, 42, 82, 0.72);
  --about-green-soft: rgba(57, 255, 20, 0.1);
}

.page-about .breadcrumbs {
  padding-top: var(--space-4);
  font-size: 0.85rem;
  color: var(--c-muted);
}

.page-about .breadcrumbs a {
  color: var(--c-accent);
  text-decoration: none;
  transition: color 0.2s;
}

.page-about .breadcrumbs a:hover {
  color: var(--c-text);
}

/* 首屏 */
.page-about .about-hero {
  position: relative;
  padding: var(--space-5) 0 var(--space-6);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(115deg, transparent 55%, rgba(57, 255, 20, 0.06) 55%),
    radial-gradient(circle at 80% 20%, rgba(57, 255, 20, 0.09), transparent 36%);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--space-5);
}

.page-about .about-hero__copy {
  max-width: 46rem;
}

.page-about .about-hero__copy h1 {
  font-family: var(--f-head);
  font-size: 2.1rem;
  font-weight: 900;
  font-style: italic;
  line-height: 1.2;
  letter-spacing: -0.02em;
  transform: skewX(var(--skew));
  margin: var(--space-3) 0;
  color: var(--c-text);
}

.page-about .about-hero__lead {
  color: var(--c-muted);
  font-size: 1.1rem;
  line-height: 1.8;
  margin: 0 0 var(--space-3);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

/* 品牌使命 */
.page-about .about-mission {
  padding: var(--space-6) 0;
}

.page-about .about-mission__grid {
  display: grid;
  gap: var(--space-4);
}

.page-about .about-mission__intro {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--c-text);
  line-height: 1.5;
}

.page-about .about-mission__copy p {
  color: var(--c-muted);
  line-height: 1.8;
  margin: 0 0 var(--space-3);
}

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

/* 发展里程碑 */
.page-about .about-milestones {
  padding: var(--space-6) 0;
}

.page-about .about-milestones__timeline {
  position: relative;
  margin-top: var(--space-5);
  padding: 0;
}

.page-about .about-milestones__timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 2px;
  bottom: 2px;
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(to bottom, var(--c-accent), var(--c-divider) 55%, var(--c-divider));
}

.page-about .timeline-item {
  position: relative;
  padding-left: 40px;
  padding-bottom: var(--space-5);
}

.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 17px;
  height: 17px;
  border-radius: 50%;
  background: var(--c-bg);
  border: 3px solid var(--c-accent);
  box-shadow: 0 0 10px rgba(57, 255, 20, 0.35);
}

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

.page-about .timeline-item__year {
  font-family: var(--f-num);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--c-accent);
  letter-spacing: 0.06em;
  margin-bottom: var(--space-1);
}

.page-about .timeline-item__card {
  background: var(--about-card-bg);
  border: 1px solid var(--c-divider);
  border-radius: var(--radius-md);
  padding: var(--space-3);
}

.page-about .timeline-item__card h3 {
  font-size: 1.1rem;
  margin: 0 0 var(--space-1);
  color: var(--c-text);
}

.page-about .timeline-item__card p {
  margin: 0;
  color: var(--c-muted);
  line-height: 1.7;
}

/* 团队与文化 */
.page-about .about-team {
  padding: var(--space-6) 0;
}

.page-about .about-team__grid {
  display: grid;
  gap: var(--space-5);
}

.page-about .about-team__media {
  border-radius: var(--radius-lg);
  background: var(--c-card);
  overflow: hidden;
}

.page-about .about-team__media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.page-about .about-team__content .section-sub {
  margin-bottom: var(--space-3);
}

.page-about .about-team__content > p {
  color: var(--c-muted);
  line-height: 1.8;
}

.page-about .about-team__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-2);
  margin: var(--space-4) 0;
}

/* 认证与安全 */
.page-about .about-security {
  padding: var(--space-6) 0;
}

.page-about .about-security__grid {
  display: grid;
  gap: var(--space-5);
}

.page-about .about-security__list {
  list-style: none;
  margin: var(--space-4) 0;
  padding: 0;
  display: grid;
  gap: var(--space-3);
}

.page-about .about-security__list li {
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  background: var(--about-card-bg);
  border: 1px solid var(--c-divider);
  border-radius: var(--radius-md);
  padding: var(--space-3);
}

.page-about .about-security__badge {
  flex: 0 0 auto;
  font-family: var(--f-num);
  font-size: 0.68rem;
  line-height: 1.2;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--c-accent);
  background: var(--about-green-soft);
  border: 1px solid rgba(57, 255, 20, 0.3);
  border-radius: 999px;
  padding: 0.35rem 0.7rem;
}

.page-about .about-security__list strong {
  display: block;
  color: var(--c-text);
  margin-bottom: 0.25rem;
}

.page-about .about-security__list p {
  margin: 0;
  color: var(--c-muted);
  line-height: 1.6;
}

.page-about .about-security__media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--c-card);
}

.page-about .about-security__media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.page-about .about-security__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* 合作伙伴 */
.page-about .about-partners {
  padding: var(--space-6) 0;
}

.page-about .about-partners__head {
  max-width: 36rem;
}

.page-about .about-partners__map {
  position: relative;
  margin: var(--space-4) 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--c-card);
}

.page-about .about-partners__map img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.page-about .about-partners__pin {
  position: absolute;
  z-index: 2;
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  background: var(--c-float);
  border: 1px solid rgba(57, 255, 20, 0.55);
  color: var(--c-text);
  border-radius: 999px;
  padding: 0.4rem 0.85rem;
  font-size: 0.78rem;
  line-height: 1.2;
  backdrop-filter: blur(4px);
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
  cursor: default;
}

.page-about .about-partners__pin:hover,
.page-about .about-partners__pin:focus {
  background: var(--c-card);
  border-color: var(--c-accent);
  transform: translateY(-2px);
  outline: none;
}

.page-about .about-partners__pin-name {
  font-weight: 700;
  white-space: nowrap;
}

.page-about .about-partners__pin-data {
  font-family: var(--f-num);
  font-size: 0.68rem;
  color: var(--c-accent);
  opacity: 0;
  max-height: 0;
  overflow: hidden;
  white-space: nowrap;
  transition: opacity 0.2s, max-height 0.2s;
}

.page-about .about-partners__pin:hover .about-partners__pin-data,
.page-about .about-partners__pin:focus .about-partners__pin-data {
  opacity: 1;
  max-height: 2rem;
}

.page-about .about-partners__pin--eu {
  top: 18%;
  left: 46%;
}

.page-about .about-partners__pin--na {
  top: 16%;
  left: 24%;
}

.page-about .about-partners__pin--asia {
  top: 42%;
  left: 72%;
}

.page-about .about-partners__bottom p {
  color: var(--c-muted);
  line-height: 1.8;
  max-width: 50rem;
}

.page-about .about-partners__bottom .btn {
  margin-top: var(--space-3);
}

/* 触屏设备 */
@media (hover: none) {
  .page-about .about-partners__pin-data {
    opacity: 1;
    max-height: 2rem;
  }
}

/* 桌面端 */
@media (min-width: 860px) {
  .page-about .about-hero__inner {
    grid-template-columns: 5fr 4fr;
    gap: var(--space-6);
    align-items: center;
  }

  .page-about .about-hero__copy h1 {
    font-size: 3.2rem;
  }

  .page-about .about-hero__stats .stat-plate:nth-child(even) {
    margin-top: var(--space-4);
  }

  .page-about .about-mission__grid {
    grid-template-columns: 2fr 3fr;
    gap: var(--space-6);
    align-items: start;
  }

  .page-about .timeline-item {
    display: flex;
    align-items: baseline;
    gap: var(--space-4);
    padding-left: 40px;
  }

  .page-about .timeline-item__year {
    flex: 0 0 8rem;
    text-align: right;
    margin: 0;
  }

  .page-about .timeline-item__card {
    flex: 1;
    max-width: 40rem;
  }

  .page-about .about-team__grid {
    grid-template-columns: 5fr 4fr;
    gap: var(--space-6);
    align-items: center;
  }

  .page-about .about-security__grid {
    grid-template-columns: 3fr 2fr;
    gap: var(--space-6);
    align-items: center;
  }

  .page-about .about-partners__bottom {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-5);
  }

  .page-about .about-partners__bottom p {
    flex: 1;
  }

  .page-about .about-partners__bottom .btn {
    flex: 0 0 auto;
    margin-top: 0;
  }
}