.page-about {
  --about-bg-deep: #101010;
  --about-card-bg: rgba(255, 255, 255, 0.045);
  --about-card-border: rgba(255, 255, 255, 0.09);
  --about-green-glow: rgba(51, 255, 153, 0.08);
  position: relative;
  background: var(--bg-deep);
  color: var(--text-warm);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-about *,
.page-about *::before,
.page-about *::after {
  box-sizing: border-box;
}

.page-about .about-container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.page-about img {
  max-width: 100%;
  height: auto;
}

/* 面包屑 */
.page-about .about-breadcrumb {
  padding: 24px 0 8px;
}

.page-about .about-breadcrumb__link,
.page-about .about-breadcrumb__sep,
.page-about .about-breadcrumb__current {
  font-size: 14px;
  line-height: 1.6;
}

.page-about .about-breadcrumb__link {
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.3s var(--ease-out), border-color 0.3s var(--ease-out);
}

.page-about .about-breadcrumb__link:hover {
  color: var(--accent-green);
  border-color: var(--accent-green);
}

.page-about .about-breadcrumb__sep {
  margin: 0 8px;
  color: var(--accent-green);
}

.page-about .about-breadcrumb__current {
  color: var(--text-warm);
}

/* 品牌故事 */
.page-about .about-intro {
  position: relative;
  padding: 56px 0 80px;
  background:
    radial-gradient(55% 70% at 88% 18%, rgba(45, 108, 255, 0.22), transparent 62%),
    linear-gradient(135deg, #0a1e3f 0%, #121212 72%);
}

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

.page-about .about-intro__kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--accent-green);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.page-about .about-intro h1 {
  font-size: clamp(34px, 5vw, 56px);
  line-height: 1.12;
  margin: 0 0 20px;
}

.page-about .about-intro__lead {
  color: var(--text-muted);
  font-size: 18px;
  line-height: 1.75;
  max-width: 640px;
  margin: 0 0 28px;
}

.page-about .about-intro__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}

.page-about .about-intro__stats span {
  display: inline-block;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--about-card-border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-warm);
  font-family: var(--font-mono);
  font-size: 14px;
  white-space: nowrap;
}

.page-about .about-intro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.page-about .about-intro__figure {
  margin: 40px 0 0;
  position: relative;
}

.page-about .about-intro__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--about-card-border);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.42);
}

.page-about .about-intro__figure figcaption,
.page-about .about-team__figure figcaption,
.page-about .about-trust__figure figcaption {
  margin-top: 12px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.6;
}

/* 章节头部 */
.page-about .about-head {
  max-width: 700px;
  margin-bottom: 56px;
}

.page-about .about-head__index {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.12em;
  color: var(--accent-green);
  margin-bottom: 8px;
}

.page-about .about-head h2 {
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.2;
  margin: 0 0 14px;
}

.page-about .about-head h2::after {
  content: "";
  display: block;
  width: 56px;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-blue));
  margin-top: 14px;
}

.page-about .about-head__lead {
  color: var(--text-muted);
  font-size: 17px;
  line-height: 1.7;
  margin: 0;
}

/* 发展里程碑 */
.page-about .about-milestones {
  background: var(--about-bg-deep);
  padding: 80px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

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

.page-about .about-milestones__timeline::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--accent-gold), rgba(255, 215, 0, 0.1));
  border-radius: 999px;
}

.page-about .about-milestone {
  position: relative;
  padding-left: 64px;
  margin-bottom: 28px;
}

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

.page-about .about-milestone__dot {
  position: absolute;
  left: 6px;
  top: 28px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--accent-gold);
  box-shadow: 0 0 0 6px rgba(255, 215, 0, 0.12), 0 0 26px rgba(255, 215, 0, 0.32);
}

.page-about .about-milestone__card {
  background: var(--about-card-bg);
  border: 1px solid var(--about-card-border);
  border-radius: var(--radius-lg);
  padding: 26px 26px 28px;
  transition: transform 0.4s var(--ease-out), border-color 0.4s var(--ease-out), background 0.4s var(--ease-out);
}

.page-about .about-milestone__card:hover {
  transform: translateY(-4px);
  border-color: rgba(51, 255, 153, 0.36);
  background: var(--about-green-glow);
}

.page-about .about-milestone__card .tag {
  margin-bottom: 14px;
}

.page-about .about-milestone__card h3 {
  font-size: 21px;
  line-height: 1.3;
  margin: 0 0 10px;
}

.page-about .about-milestone__card p {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.72;
  margin: 0;
}

/* 数据能力 */
.page-about .about-data {
  position: relative;
  padding: 80px 0;
  background:
    radial-gradient(36% 60% at 18% 16%, rgba(51, 255, 153, 0.06), transparent 60%),
    linear-gradient(135deg, #0a1e3f 0%, #151a24 100%);
}

.page-about .about-data__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-bottom: 40px;
}

.page-about .about-data__stat {
  position: relative;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--about-card-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px 26px;
  overflow: hidden;
  transition: transform 0.4s var(--ease-out), border-color 0.4s var(--ease-out), background 0.4s var(--ease-out);
}

.page-about .about-data__stat::after {
  content: "";
  position: absolute;
  right: -24px;
  top: -24px;
  width: 88px;
  height: 88px;
  background: radial-gradient(circle, rgba(45, 108, 255, 0.18), transparent 72%);
  pointer-events: none;
}

.page-about .about-data__stat:hover {
  transform: translateY(-4px);
  border-color: rgba(51, 255, 153, 0.42);
  background: rgba(51, 255, 153, 0.04);
}

.page-about .about-data__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(34px, 3.6vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  color: var(--accent-green);
  margin-bottom: 8px;
}

.page-about .about-data__label {
  display: block;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-warm);
  margin-bottom: 6px;
}

.page-about .about-data__note {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

.page-about .about-data__desc {
  max-width: 760px;
  background: rgba(10, 30, 63, 0.5);
  border: 1px solid var(--about-card-border);
  border-left: 4px solid var(--accent-green);
  border-radius: var(--radius-md);
  padding: 26px 28px;
}

.page-about .about-data__desc p {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.75;
  margin: 0;
}

/* 团队与组织 */
.page-about .about-team {
  padding: 80px 0;
  background:
    radial-gradient(50% 60% at 92% 8%, rgba(255, 215, 0, 0.05), transparent 62%),
    var(--bg-warm);
}

.page-about .about-team__grid {
  display: grid;
  gap: 48px;
  align-items: center;
}

.page-about .about-team__summary {
  font-size: 18px;
  line-height: 1.75;
  color: rgba(245, 241, 232, 0.92);
  border-left: 4px solid var(--accent-gold);
  padding-left: 20px;
  margin: 0 0 28px;
}

.page-about .about-team__roles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-team__role {
  background: rgba(0, 0, 0, 0.16);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: background 0.35s var(--ease-out), border-color 0.35s var(--ease-out), transform 0.35s var(--ease-out);
}

.page-about .about-team__role:hover {
  background: rgba(0, 0, 0, 0.26);
  border-color: rgba(255, 215, 0, 0.28);
  transform: translateX(4px);
}

.page-about .about-team__role strong {
  display: block;
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 17px;
  font-weight: 800;
  color: var(--accent-gold);
  margin-bottom: 6px;
}

.page-about .about-team__role span {
  color: rgba(245, 241, 232, 0.78);
  font-size: 15px;
  line-height: 1.6;
}

.page-about .about-team__figure {
  margin: 0;
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.4);
}

/* 认证与合作 */
.page-about .about-trust {
  position: relative;
  padding: 80px 0;
  background: var(--bg-deep);
}

.page-about .about-trust::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(26% 50% at 8% 92%, rgba(255, 215, 0, 0.06), transparent 60%),
    radial-gradient(26% 50% at 92% 8%, rgba(45, 108, 255, 0.08), transparent 60%);
  pointer-events: none;
}

.page-about .about-trust .about-container {
  position: relative;
}

.page-about .about-trust__grid {
  display: grid;
  gap: 48px;
  align-items: center;
}

.page-about .about-trust__figure {
  margin: 0;
}

.page-about .about-trust__figure img {
  display: block;
  width: 100%;
  max-width: 460px;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--about-card-border);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.36);
}

.page-about .about-trust__list {
  list-style: none;
  margin: 0 0 26px;
  padding: 0;
}

.page-about .about-trust__list li {
  position: relative;
  padding: 15px 0 15px 36px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-warm);
}

.page-about .about-trust__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 20px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent-gold);
  box-shadow: 0 0 0 5px rgba(255, 215, 0, 0.08);
}

.page-about .about-trust__content p {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.75;
  margin: 0;
}

/* 底部 CTA */
.page-about .about-cta {
  padding: 64px 0 104px;
  background:
    radial-gradient(50% 90% at 80% 100%, rgba(45, 108, 255, 0.14), transparent 62%),
    var(--bg-deep);
}

.page-about .about-cta__panel {
  max-width: 840px;
  margin: 0 auto;
  padding: 48px 32px;
  text-align: center;
  background: linear-gradient(135deg, rgba(51, 255, 153, 0.08), rgba(45, 108, 255, 0.14));
  border: 1px solid rgba(51, 255, 153, 0.18);
  border-radius: 32px;
}

.page-about .about-cta__panel h2 {
  font-size: clamp(26px, 4vw, 38px);
  line-height: 1.25;
  margin: 0 0 12px;
}

.page-about .about-cta__panel p {
  color: var(--text-muted);
  font-size: 18px;
  line-height: 1.65;
  margin: 0 0 30px;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.page-about .about-intro__actions .btn,
.page-about .about-cta__actions .btn {
  padding: 12px 24px;
  font-size: 15px;
  font-weight: 700;
}

/* 桌面端布局 */
@media (min-width: 992px) {
  .page-about .about-breadcrumb {
    padding-top: 32px;
  }

  .page-about .about-intro {
    padding: 72px 0 96px;
  }

  .page-about .about-intro__grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 64px;
    align-items: center;
  }

  .page-about .about-intro__content {
    grid-column: 1 / 7;
  }

  .page-about .about-intro__figure {
    grid-column: 7 / 13;
    margin: 0;
  }

  .page-about .about-milestones,
  .page-about .about-data,
  .page-about .about-team,
  .page-about .about-trust {
    padding: 104px 0;
  }

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

  .page-about .about-milestone {
    width: 50%;
    padding-left: 0;
    margin-bottom: 0;
  }

  .page-about .about-milestone:nth-child(odd) {
    margin-right: auto;
    padding-right: 72px;
    text-align: right;
  }

  .page-about .about-milestone:nth-child(even) {
    margin-left: auto;
    padding-left: 72px;
  }

  .page-about .about-milestone__dot {
    left: auto;
    right: -14px;
    top: 30px;
  }

  .page-about .about-milestone:nth-child(even) .about-milestone__dot {
    right: auto;
    left: -14px;
  }

  .page-about .about-data__stats {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }

  .page-about .about-team__grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 64px;
  }

  .page-about .about-trust__grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 72px;
  }
}

@media (min-width: 768px) and (max-width: 991.98px) {
  .page-about .about-data__stats {
    grid-template-columns: 1fr 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal],
  .page-about .about-milestone__card,
  .page-about .about-data__stat,
  .page-about .about-team__role {
    transition: none !important;
  }
}