.page-about {
  --about-rule: rgba(255,255,255,0.12);
  --about-panel-bg: rgba(15,45,74,0.55);
  background: var(--c-primary);
  color: var(--c-text);
}

/* ===== 首屏封面 ===== */
.page-about .about-hero {
  position: relative;
  min-height: 72vh;
  display: flex;
  align-items: flex-end;
  padding: 100px 0 40px;
  overflow: hidden;
  background: linear-gradient(180deg, rgba(10,27,49,0.45) 0%, rgba(10,27,49,0.8) 68%, var(--c-primary) 100%);
}

.page-about .about-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-about .about-hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--c-primary) 0%, rgba(10,27,49,0.35) 52%, rgba(10,27,49,0.72) 100%);
}

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

.page-about .about-hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 100px;
  height: 100%;
  background: repeating-linear-gradient(-45deg, transparent 0 12px, rgba(255,107,53,0.2) 12px 14px);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-hero-inner {
  position: relative;
  z-index: 1;
  width: 100%;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: 32px;
  color: var(--c-sub);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
}

.page-about .about-hero .breadcrumb a {
  color: var(--c-sub);
  border-bottom: 1px solid transparent;
  text-decoration: none;
  transition: color var(--tr), border-color var(--tr);
}

.page-about .about-hero .breadcrumb a:hover {
  color: var(--c-accent);
  border-color: var(--c-accent);
}

.page-about .about-hero-kicker {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--c-accent);
  text-transform: uppercase;
}

.page-about .about-hero h1 {
  margin: 0 0 24px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.75rem, 7vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--c-surface);
  max-width: 16ch;
  text-transform: uppercase;
}

.page-about .about-hero-lead {
  margin: 0 0 42px;
  max-width: 54ch;
  font-size: clamp(1rem, 2.2vw, 1.25rem);
  line-height: 1.7;
  color: var(--c-sub);
}

.page-about .about-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px 24px;
  max-width: 760px;
  border-top: 1px solid rgba(57,255,136,0.25);
  padding-top: 34px;
}

.page-about .about-hero-stats .stat {
  border-left: 2px solid var(--c-accent);
  padding-left: 14px;
}

.page-about .about-hero-stats .stat-value {
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  font-weight: 600;
  color: var(--c-accent);
  line-height: 1.2;
}

.page-about .about-hero-stats .stat-label {
  margin-top: 4px;
  font-size: 13px;
  color: var(--c-sub);
}

/* ===== 通用章节 ===== */
.page-about .about-section {
  padding: 80px 0;
}

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

.page-about .about-grid-left .section-index,
.page-about .about-local-body .section-index,
.page-about .about-cta .section-index {
  margin-bottom: 12px;
}

.page-about .about-grid-left .section-title,
.page-about .about-local-body .section-title {
  margin-bottom: 8px;
}

.page-about .section-sub {
  color: var(--c-sub);
}

.page-about .about-grid-right > p,
.page-about .about-local-body > p {
  color: var(--c-text);
  line-height: 1.75;
  margin: 0 0 20px;
}

/* ===== 01 品牌档案 ===== */
.page-about .about-grid-right > .about-lead {
  margin: 0 0 24px;
  padding-left: 20px;
  border-left: 3px solid var(--c-accent);
  font-size: clamp(1.1rem, 2.2vw, 1.4rem);
  font-weight: 600;
  line-height: 1.6;
  color: var(--c-surface);
}

.page-about .about-grid-right > .about-profile-note {
  border: 1px solid var(--c-divider);
  border-left: 3px solid var(--c-warning);
  background: rgba(255,107,53,0.06);
  padding: 14px 18px;
  font-size: 0.95rem;
  color: var(--c-sub);
}

.page-about .about-values {
  margin-top: 40px;
}

.page-about .about-values .panel h3,
.page-about .about-honor-card h3 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.05rem;
  margin: 0 0 10px;
}

/* ===== 02 发展里程碑 ===== */
.page-about .about-timeline {
  position: relative;
  padding-left: 32px;
}

.page-about .about-timeline::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-accent) 0%, var(--c-divider) 55%, rgba(30,58,95,0.3) 100%);
}

.page-about .timeline-item {
  position: relative;
  margin-bottom: 34px;
}

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

.page-about .timeline-item::before {
  content: '';
  position: absolute;
  left: -32px;
  top: 7px;
  width: 12px;
  height: 12px;
  border-radius: 2px;
  background: var(--c-primary);
  border: 2px solid var(--c-accent);
  transition: transform var(--tr), box-shadow var(--tr);
}

.page-about .timeline-item:hover::before,
.page-about .timeline-item:focus-within::before {
  transform: scale(1.3);
  box-shadow: 0 0 0 6px rgba(57,255,136,0.18);
}

.page-about .timeline-node {
  padding-left: 20px;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: clamp(1.2rem, 2.4vw, 1.55rem);
  font-weight: 700;
  color: var(--c-accent);
  letter-spacing: 0.02em;
}

.page-about .timeline-content {
  border-left: 1px solid var(--c-divider);
  padding: 2px 0 4px 20px;
  transition: background var(--tr), border-color var(--tr);
}

.page-about .timeline-item:hover .timeline-content,
.page-about .timeline-item:focus-within .timeline-content {
  border-left-color: var(--c-accent);
  background: rgba(57,255,136,0.04);
}

.page-about .timeline-content h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--c-surface);
}

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

/* ===== 03 本地化服务 ===== */
.page-about .about-local-section {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--c-primary) 0%, var(--c-secondary) 60%, var(--c-primary) 100%);
  border-top: 1px solid var(--c-divider);
}

.page-about .about-wave {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 64px;
  pointer-events: none;
  opacity: 0.8;
}

.page-about .about-local-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  align-items: center;
}

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

.page-about .about-local-body {
  position: relative;
}

.page-about .about-local-body .section-index {
  color: var(--c-warning);
}

.page-about .about-local-body::after {
  content: '03';
  position: absolute;
  top: -28px;
  right: 0;
  z-index: 0;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 7rem;
  line-height: 1;
  color: rgba(255,107,53,0.08);
  pointer-events: none;
}

.page-about .about-local-body > * {
  position: relative;
  z-index: 1;
}

.page-about .about-local-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 32px 0 24px;
}

.page-about .about-metric {
  border-top: 2px solid var(--c-accent);
  padding-top: 12px;
}

.page-about .about-metric-num {
  display: block;
  margin-bottom: 4px;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: clamp(1.1rem, 2.4vw, 1.4rem);
  font-weight: 600;
  color: var(--c-accent);
}

.page-about .about-metric-label {
  font-size: 13px;
  color: var(--c-sub);
  line-height: 1.4;
}

.page-about .about-local-body > .about-local-note {
  font-size: 0.95rem;
  color: var(--c-sub);
  margin: 0;
}

/* ===== 04 资质与荣誉 ===== */
.page-about .about-honor-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin: 32px 0;
}

.page-about .about-honor-card {
  background: var(--about-panel-bg);
  border: 1px solid var(--c-divider);
  border-left: 3px solid var(--c-warning);
  padding: 24px;
  transition: transform var(--tr), border-color var(--tr), box-shadow var(--tr);
}

.page-about .about-honor-card:hover,
.page-about .about-honor-card:focus-within {
  transform: translateY(-3px);
  border-color: var(--c-accent);
  border-left-color: var(--c-accent);
  box-shadow: 0 14px 32px rgba(0,0,0,0.28);
}

.page-about .about-honor-key {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 3vw, 1.8rem);
  font-weight: 600;
  color: var(--c-warning);
}

.page-about .about-honor-card p:last-child {
  margin: 0;
  color: var(--c-sub);
  font-size: 0.93rem;
  line-height: 1.65;
}

.page-about .about-honor-media {
  max-width: 520px;
}

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

/* ===== 05 CTA ===== */
.page-about .about-cta {
  padding: 80px 0;
  border-top: 1px solid var(--c-divider);
  background: linear-gradient(180deg, var(--c-primary) 0%, rgba(15,45,74,0.6) 100%);
}

.page-about .about-cta-inner {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.page-about .about-cta .section-index {
  color: var(--c-accent);
  margin: 0 0 12px;
}

.page-about .about-cta h2 {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  color: var(--c-surface);
  letter-spacing: -0.02em;
}

.page-about .about-cta-desc {
  margin: 0 0 32px;
  color: var(--c-sub);
}

.page-about .about-cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
}

/* ===== 平板与桌面 ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    min-height: 86vh;
    padding-bottom: 56px;
  }

  .page-about .about-hero-stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-grid {
    grid-template-columns: 280px 1fr;
    gap: 56px;
  }

  .page-about .about-grid-left {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-about .about-local-grid {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
  }

  .page-about .about-honor-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-about .about-local-metrics {
    gap: 24px;
  }

  .page-about .about-cta-links {
    gap: 20px;
  }
}

@media (min-width: 1200px) {
  .page-about .about-hero {
    min-height: 100vh;
    padding-bottom: 80px;
  }

  .page-about .about-section {
    padding: 120px 0;
  }

  .page-about .about-cta {
    padding: 112px 0;
  }

  .page-about .about-grid {
    gap: 80px;
  }

  .page-about .about-hero h1 {
    font-size: 4.75rem;
  }
}