.page-about {
  --a-hero-min-height: 520px;
  background: var(--color-warm-gray);
  color: var(--color-ink);
}

/* 面包屑 */
.page-about .a-breadcrumbs {
  max-width: calc(var(--container-max) + 48px);
  margin: 0 auto;
  padding: 18px 24px 0;
}
.page-about .a-breadcrumbs-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 14px;
}
.page-about .a-breadcrumbs-item + .a-breadcrumbs-item::before {
  content: "/";
  color: rgba(27, 42, 35, 0.4);
  margin-right: 8px;
}
.page-about .a-breadcrumbs-item a {
  color: var(--color-bright-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.page-about .a-breadcrumbs-item a:hover {
  color: var(--color-gold);
  text-decoration: underline;
}
.page-about .a-breadcrumbs-item[aria-current="page"] {
  color: rgba(27, 42, 35, 0.55);
}

/* 首屏英雄区 */
.page-about .a-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  min-height: var(--a-hero-min-height);
  display: flex;
  align-items: center;
  color: var(--color-white);
  background: var(--color-deep-blue);
}
.page-about .a-hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}
.page-about .a-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(100deg, rgba(11, 30, 54, 0.95) 0%, rgba(11, 30, 54, 0.78) 48%, rgba(14, 92, 63, 0.55) 100%);
}
.page-about .a-hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: calc(var(--container-max) + 48px);
  margin: 0 auto;
  padding: 64px 24px;
}
.page-about .a-hero-copy {
  max-width: 820px;
}
.page-about .a-hero-eyebrow {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--color-highlight-gold);
  margin: 0 0 16px;
  text-transform: uppercase;
}
.page-about .a-hero-copy h1 {
  font-family: var(--font-heading);
  font-size: clamp(38px, 7vw, 76px);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  color: var(--color-white);
}
.page-about .a-hero-lead {
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.88);
  max-width: 640px;
  margin: 0 0 32px;
}
.page-about .a-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.page-about .a-hero-actions .btn {
  padding: 13px 28px;
  border-radius: var(--radius-pill);
  font-weight: 700;
}
.page-about .a-hero-actions .btn-primary {
  background: var(--color-gold);
  border: 1px solid var(--color-gold);
  color: var(--color-deep-blue);
}
.page-about .a-hero-actions .btn-primary:hover {
  background: var(--color-highlight-gold);
  border-color: var(--color-highlight-gold);
}
.page-about .a-hero-actions .btn-outline {
  border: 1px solid rgba(255, 255, 255, 0.7);
  color: var(--color-white);
  background: transparent;
}
.page-about .a-hero-actions .btn-outline:hover {
  border-color: var(--color-white);
  background: rgba(255, 255, 255, 0.12);
}
.page-about .a-hero-status {
  margin-top: 28px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  background: rgba(11, 30, 54, 0.55);
  backdrop-filter: blur(6px);
  font-size: 13px;
  color: rgba(255, 255, 255, 0.85);
}
.page-about .a-hero-pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-highlight-gold);
  box-shadow: 0 0 0 4px rgba(240, 199, 90, 0.25);
}

/* 品牌起源 */
.page-about .a-origin {
  padding: 72px 0;
  background: var(--color-warm-gray);
}
.page-about .a-origin-grid {
  display: grid;
  gap: 36px;
  align-items: center;
}
.page-about .a-origin-copy {
  max-width: 680px;
}
.page-about .a-eyebrow {
  display: inline-block;
  margin: 0 0 12px;
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  background: var(--color-light-green);
  color: var(--color-dark-green);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
}
.page-about .a-origin-copy h2 {
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.2;
  font-weight: 900;
  margin: 0 0 18px;
  color: var(--color-ink);
}
.page-about .a-origin-copy p {
  font-size: 16px;
  line-height: 1.75;
  color: rgba(27, 42, 35, 0.78);
  margin: 0 0 16px;
}
.page-about .a-origin-tags {
  display: inline-block;
  margin-top: 12px;
  padding: 10px 16px;
  border-left: 4px solid var(--color-green);
  background: var(--color-light-green);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
}
.page-about .a-text-link {
  display: inline-block;
  margin-top: 12px;
  font-weight: 700;
  color: var(--color-bright-blue);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.page-about .a-text-link:hover {
  color: var(--color-gold);
}
.page-about .a-origin-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.page-about .a-stat-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(31, 138, 91, 0.12);
}
.page-about .a-stat-card--primary {
  background: linear-gradient(135deg, var(--color-dark-green), var(--color-green));
  border: none;
}
.page-about .a-stat-value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(30px, 4vw, 42px);
  font-weight: 700;
  color: var(--color-dark-green);
  line-height: 1.1;
  margin-bottom: 8px;
}
.page-about .a-stat-card--primary .a-stat-value {
  color: var(--color-highlight-gold);
}
.page-about .a-stat-label {
  display: block;
  font-size: 14px;
  color: rgba(27, 42, 35, 0.6);
}
.page-about .a-stat-card--primary .a-stat-label {
  color: rgba(255, 255, 255, 0.82);
}

/* 核心服务理念 */
.page-about .a-philosophy {
  padding: 80px 0;
  background: linear-gradient(145deg, var(--color-deep-blue) 0%, var(--color-dark-green) 100%);
  color: var(--color-white);
}
.page-about .a-section-head {
  max-width: 720px;
  margin: 0 auto 48px;
  text-align: center;
}
.page-about .a-section-head .a-eyebrow {
  background: rgba(212, 160, 23, 0.18);
  color: var(--color-highlight-gold);
}
.page-about .a-section-head h2 {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 900;
  margin: 0 0 12px;
  color: var(--color-white);
}
.page-about .a-section-head p {
  font-size: 16px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.7);
  margin: 0;
}
.page-about .a-section-head--light h2 {
  color: var(--color-ink);
}
.page-about .a-section-head--light p {
  color: rgba(27, 42, 35, 0.72);
}
.page-about .a-section-head--light .a-eyebrow {
  background: var(--color-light-green);
  color: var(--color-dark-green);
}
.page-about .a-philosophy-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.page-about .a-philosophy-card {
  position: relative;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  overflow: hidden;
  transition: transform var(--transition-base), background var(--transition-base), border-color var(--transition-base);
}
.page-about .a-philosophy-card:hover {
  transform: translateY(-6px);
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(240, 199, 90, 0.4);
}
.page-about .a-philosophy-index {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-highlight-gold);
  letter-spacing: 0.12em;
  margin-bottom: 14px;
}
.page-about .a-philosophy-card h3 {
  font-size: 22px;
  font-weight: 800;
  margin: 0 0 12px;
  color: var(--color-white);
}
.page-about .a-philosophy-card p {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.76);
  margin: 0;
}

/* 发展里程碑 */
.page-about .a-milestones {
  padding: 80px 0;
  background: var(--color-light-green);
}
.page-about .a-timeline-wrap {
  max-width: 900px;
  margin: 0 auto;
}
.page-about .a-milestones-img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  margin-bottom: 48px;
}
.page-about .a-timeline {
  position: relative;
  padding-left: 44px;
}
.page-about .a-timeline::before {
  content: "";
  position: absolute;
  top: 8px;
  bottom: 8px;
  left: 14px;
  width: 3px;
  border-radius: 999px;
  background: linear-gradient(to bottom, var(--color-green) 0%, var(--color-gold) 100%);
}
.page-about .a-timeline-item {
  position: relative;
  margin-bottom: 24px;
}
.page-about .a-timeline-dot {
  position: absolute;
  top: 30px;
  left: -38px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--color-gold);
  border: 3px solid var(--color-white);
  box-shadow: 0 0 0 4px rgba(212, 160, 23, 0.25);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.page-about .a-timeline-item:hover .a-timeline-dot {
  transform: scale(1.2);
  box-shadow: 0 0 0 6px rgba(212, 160, 23, 0.35);
}
.page-about .a-timeline-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 24px 24px 22px;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(31, 138, 91, 0.14);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}
.page-about .a-timeline-item:hover .a-timeline-card {
  transform: translateY(-4px);
  box-shadow: var(--shadow-soft);
}
.page-about .a-timeline-year {
  display: inline-block;
  margin-bottom: 8px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--color-dark-green);
  color: var(--color-white);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.page-about .a-timeline-card h3 {
  font-size: 20px;
  font-weight: 800;
  margin: 0 0 8px;
  color: var(--color-ink);
}
.page-about .a-timeline-card p {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(27, 42, 35, 0.72);
  margin: 0;
}

/* 团队构成 */
.page-about .a-team {
  padding: 80px 0;
  background: var(--color-white);
}
.page-about .a-team-grid {
  display: grid;
  gap: 40px;
  align-items: center;
}
.page-about .a-team-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}
.page-about .a-team-content {
  max-width: 640px;
}
.page-about .a-team-content h2 {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 900;
  line-height: 1.2;
  margin: 0 0 16px;
  color: var(--color-ink);
}
.page-about .a-team-content > p {
  font-size: 16px;
  line-height: 1.75;
  color: rgba(27, 42, 35, 0.78);
  margin: 0 0 24px;
}
.page-about .a-team-roles {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
}
.page-about .a-team-roles li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 4px;
  border-bottom: 1px solid rgba(31, 138, 91, 0.16);
}
.page-about .a-role-name {
  font-weight: 600;
  color: var(--color-ink);
}
.page-about .a-role-count {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-green);
  background: var(--color-light-green);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
}
.page-about .a-team-note {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(27, 42, 35, 0.62);
  margin: 0;
}

/* 资质与合作 */
.page-about .a-credits {
  padding: 80px 0;
  background: linear-gradient(160deg, var(--color-deep-blue) 0%, var(--color-dark-green) 70%, var(--color-green) 100%);
}
.page-about .a-credits-grid {
  display: grid;
  gap: 20px;
}
.page-about .a-credit-card {
  position: relative;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  color: var(--color-white);
  backdrop-filter: blur(4px);
  transition: transform var(--transition-base), background var(--transition-base);
}
.page-about .a-credit-card:hover {
  transform: translateY(-6px);
  background: rgba(255, 255, 255, 0.16);
}
.page-about .a-credit-card::before {
  content: "";
  display: block;
  height: 4px;
  margin-bottom: 22px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-gold) 48%, var(--color-white) 48%, var(--color-white) 100%);
}
.page-about .a-credit-badge {
  display: inline-flex;
  width: 48px;
  height: 48px;
  margin-bottom: 18px;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: rgba(212, 160, 23, 0.18);
  border: 1px solid rgba(240, 199, 90, 0.35);
  color: var(--color-highlight-gold);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 14px;
}
.page-about .a-credit-card h3 {
  font-size: 20px;
  font-weight: 800;
  margin: 0 0 10px;
  color: var(--color-white);
}
.page-about .a-credit-card p {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.76);
  margin: 0;
}

/* 底部 CTA */
.page-about .a-cta {
  padding: 48px 0 96px;
  background: var(--color-warm-gray);
}
.page-about .a-cta-card {
  position: relative;
  overflow: hidden;
  border-radius: 32px;
  padding: 48px 28px;
  text-align: center;
  color: var(--color-white);
  background: linear-gradient(135deg, var(--color-deep-blue) 0%, var(--color-dark-green) 100%);
  box-shadow: var(--shadow-soft);
}
.page-about .a-cta-card::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: rgba(212, 160, 23, 0.18);
}
.page-about .a-cta-card .a-eyebrow {
  position: relative;
  z-index: 2;
  background: rgba(212, 160, 23, 0.2);
  color: var(--color-highlight-gold);
}
.page-about .a-cta-card h2 {
  position: relative;
  z-index: 2;
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 900;
  margin: 0 0 12px;
  color: var(--color-white);
}
.page-about .a-cta-card p {
  position: relative;
  z-index: 2;
  font-size: 16px;
  line-height: 1.7;
  margin: 0 auto 28px;
  max-width: 560px;
  color: rgba(255, 255, 255, 0.82);
}
.page-about .a-cta-actions {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}
.page-about .a-cta-actions .btn {
  border-radius: var(--radius-pill);
  font-weight: 700;
  padding: 12px 26px;
}
.page-about .a-cta-actions .btn-primary {
  background: var(--color-gold);
  border: 1px solid var(--color-gold);
  color: var(--color-deep-blue);
}
.page-about .a-cta-actions .btn-primary:hover {
  background: var(--color-highlight-gold);
  border-color: var(--color-highlight-gold);
}
.page-about .a-cta-actions .btn-outline {
  border: 1px solid rgba(255, 255, 255, 0.7);
  color: var(--color-white);
  background: transparent;
}
.page-about .a-cta-actions .btn-outline:hover {
  border-color: var(--color-white);
  background: rgba(255, 255, 255, 0.1);
}

/* 响应式增强 */
@media (min-width: 768px) {
  .page-about .a-hero {
    min-height: 560px;
  }
  .page-about .a-hero-inner {
    padding: 80px 48px;
  }
  .page-about .a-hero-actions .btn {
    padding: 14px 32px;
  }
  .page-about .a-origin-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 56px;
  }
  .page-about .a-stat-card {
    padding: 30px 26px;
  }
  .page-about .a-philosophy-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
  .page-about .a-team-grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 56px;
  }
  .page-about .a-credits-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
  .page-about .a-timeline {
    padding-left: 56px;
  }
  .page-about .a-timeline-dot {
    top: 32px;
    left: -50px;
    width: 18px;
    height: 18px;
  }
  .page-about .a-timeline-card {
    padding: 28px;
  }
}

@media (min-width: 1100px) {
  .page-about .a-hero {
    min-height: 640px;
  }
  .page-about .a-origin {
    padding: 96px 0;
  }
  .page-about .a-philosophy {
    padding: 100px 0;
  }
  .page-about .a-milestones {
    padding: 100px 0;
  }
  .page-about .a-team {
    padding: 100px 0;
  }
  .page-about .a-credits {
    padding: 100px 0;
  }
  .page-about .a-cta {
    padding: 64px 0 120px;
  }
  .page-about .a-cta-card {
    padding: 64px 56px;
  }
}