.page-about {
  position: relative;
  overflow-x: hidden;
}

/* ===== 首屏 Hero 定制 ===== */
.page-about .page-hero {
  position: relative;
  padding: clamp(40px, 7vw, 108px) 0 32px;
  overflow: hidden;
}
.page-about .page-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 36px;
  align-items: end;
}
.page-about .page-hero-eyebrow {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-bottom: 18px;
}
.page-about .page-hero h1 {
  margin: 0 0 20px;
  font-family: var(--font-head);
  font-size: clamp(2rem, 7vw, 4.2rem);
  line-height: 1.24;
  font-weight: 200;
  letter-spacing: 0.04em;
  color: var(--paper);
}
.page-about .hero-title-gold {
  color: var(--gold-bright);
  font-weight: 700;
}
.page-about .page-hero-sub {
  max-width: 58ch;
  color: var(--paper-dim);
  font-size: 1rem;
  line-height: 1.75;
  margin: 0;
}
.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}
.page-about .hero-actions .btn {
  min-width: 160px;
}

/* ===== 首屏统计 ===== */
.page-about .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin: 0;
}
.page-about .stat-cell {
  background: var(--ink-glass);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 16px 14px;
  text-align: center;
  backdrop-filter: blur(8px);
}
.page-about .stat-cell-wide {
  grid-column: 1 / -1;
}
.page-about .stat-num {
  display: block;
  font-size: 1.7rem;
  color: var(--gold-bright);
  letter-spacing: 0.02em;
}
.page-about .stat-cell dd {
  margin: 4px 0 0;
  color: var(--paper-soft);
  font-size: 0.8rem;
}

/* ===== 云纹装饰 ===== */
.page-about .hero-cloud {
  position: absolute;
  inset: auto 0 0 0;
  height: 120px;
  z-index: 0;
  opacity: 0.8;
  pointer-events: none;
}
.page-about .hero-cloud svg {
  width: 100%;
  height: 100%;
}

/* ===== 区块头统一节奏 ===== */
.page-about .section-head {
  margin: 76px 0 30px;
}
.page-about .section-index {
  display: inline-block;
  font-size: 0.85rem;
  color: var(--clay);
  letter-spacing: 0.3em;
  margin-bottom: 8px;
}
.page-about .section-desc {
  color: var(--paper-soft);
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 60ch;
  margin-top: 8px;
}

/* ===== 图片基础 ===== */
.page-about img {
  max-width: 100%;
  height: auto;
}

/* ===== 品牌定位 ===== */
.page-about .position-layout {
  display: grid;
  gap: 20px;
}
.page-about .position-statement {
  padding: clamp(24px, 4vw, 44px);
  border-radius: 16px;
}
.page-about .position-lead {
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--paper);
  line-height: 1.75;
  margin-bottom: 20px;
}
.page-about .position-statement p {
  color: var(--paper-dim);
  line-height: 1.7;
}
.page-about .position-statement .list-check {
  margin-top: 24px;
}
.page-about .position-cred {
  padding: 26px;
  background: var(--ink-glass);
  border: 1px solid var(--line);
  border-top: 3px solid var(--gold);
  border-radius: 16px;
}
.page-about .royal-mark {
  display: grid;
  place-items: center;
  margin-bottom: 16px;
}
.page-about .royal-mark svg {
  width: 120px;
  height: 120px;
}
.page-about .position-cred-label {
  font-family: var(--font-head);
  font-size: 1.1rem;
  color: var(--gold-bright);
  font-weight: 700;
  margin: 0 0 8px;
}
.page-about .position-cred p {
  color: var(--paper-dim);
  font-size: 0.95rem;
  line-height: 1.7;
}
.page-about .text-link {
  display: inline-block;
  margin-top: 12px;
  color: var(--gold-bright);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
}

/* ===== 发展里程碑 ===== */
.page-about .milestone-section {
  margin-top: 20px;
}
.page-about .timeline-stage {
  position: relative;
}
.page-about .timeline-artwork {
  display: block;
  width: 100%;
  max-height: 300px;
  object-fit: cover;
  border-radius: 16px;
  margin-bottom: 24px;
  border: 1px solid var(--line);
}
.page-about .timeline-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.page-about .timeline-item {
  position: relative;
  padding: 24px 24px 24px 30px;
  background: var(--ink-glass);
  border: 1px solid var(--line);
  border-left: 3px solid var(--gold);
  border-radius: 0 14px 14px 0;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 32px;
  width: 8px;
  height: 8px;
  background: var(--gold);
  transform: rotate(45deg);
  box-shadow: 0 0 0 3px var(--gold-dim);
}
.page-about .timeline-item:hover,
.page-about .timeline-item:focus-within {
  background: rgba(28, 28, 28, 0.72);
  border-color: var(--line-strong);
  box-shadow: 0 10px 32px rgba(0, 0, 0, 0.35);
}
.page-about .timeline-year {
  font-size: 1.2rem;
  color: var(--gold-bright);
  margin: 0 0 6px;
}
.page-about .timeline-item h3 {
  font-family: var(--font-head);
  font-size: 1.08rem;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--paper);
}
.page-about .timeline-item p {
  color: var(--paper-dim);
  font-size: 0.9rem;
  line-height: 1.65;
  margin: 0;
}

/* ===== 资质与认证 ===== */
.page-about .cert-section {
  margin-top: 20px;
}
.page-about .cert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.page-about .cert-badge {
  background: var(--ink-glass);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
  text-align: center;
  position: relative;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.page-about .cert-badge:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--line-strong);
}
.page-about .cert-art {
  width: 300px;
  height: 210px;
  object-fit: cover;
  border-radius: 10px;
  margin-bottom: 16px;
}
.page-about .cert-badge h3 {
  font-family: var(--font-head);
  font-size: 1rem;
  color: var(--paper);
  margin: 0 0 8px;
}
.page-about .cert-badge p {
  color: var(--paper-dim);
  font-size: 0.85rem;
  line-height: 1.6;
  margin: 0;
}
.page-about .cert-seal {
  display: grid;
  place-items: center;
  width: 108px;
  height: 108px;
  margin: 0 auto 16px;
  border: 2px solid var(--gold);
  border-radius: 50%;
  background: radial-gradient(circle at 30% 25%, rgba(255, 215, 0, 0.14), transparent 60%);
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--gold-bright);
  line-height: 1.15;
}
.page-about .cert-note {
  margin-top: 18px;
  padding: 14px 20px;
  border-left: 3px solid var(--clay);
  background: rgba(122, 82, 48, 0.12);
  border-radius: 0 10px 10px 0;
}
.page-about .cert-note p {
  margin: 0;
  color: var(--paper-soft);
  font-size: 0.9rem;
  line-height: 1.65;
}

/* ===== 服务能力 ===== */
.page-about .service-section {
  margin-top: 20px;
}
.page-about .service-layout {
  display: grid;
  gap: 20px;
}
.page-about .service-visual {
  order: -1;
}
.page-about .service-art {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: 16px;
  border: 1px solid var(--line);
}
.page-about .service-cells {
  display: grid;
  gap: 14px;
}
.page-about .service-cell {
  background: var(--ink-glass);
  border: 1px solid var(--line);
  padding: 22px;
  border-radius: 14px;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}
.page-about .service-cell:hover {
  border-color: var(--line-strong);
  background: rgba(28, 28, 28, 0.6);
}
.page-about .cell-index {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--clay);
  letter-spacing: 0.2em;
  margin-bottom: 8px;
}
.page-about .service-cell h3 {
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 700;
  color: var(--gold-bright);
  margin: 0 0 8px;
}
.page-about .service-cell p {
  color: var(--paper-dim);
  font-size: 0.88rem;
  line-height: 1.65;
  margin: 0;
}

/* ===== 底部合规条 ===== */
.page-about .trust-strip {
  margin-top: 72px;
  border-top: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(139, 0, 0, 0.35), rgba(24, 24, 24, 0.4) 40%, rgba(212, 175, 55, 0.12));
  padding: 28px 0;
}
.page-about .trust-strip .page-container {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.page-about .trust-strip p {
  color: var(--paper-dim);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0;
}
.page-about .trust-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

/* ===== 平板及以上 ===== */
@media (min-width: 720px) {
  .page-about .hero-stats {
    grid-template-columns: repeat(3, 1fr);
  }
  .page-about .stat-cell-wide {
    grid-column: span 3;
  }
  .page-about .cert-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-about .service-cells {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===== 桌面端 ===== */
@media (min-width: 1024px) {
  .page-about .page-hero {
    padding-top: 96px;
  }
  .page-about .page-hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 64px;
  }
  .page-about .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-about .stat-cell-wide {
    grid-column: span 2;
  }
  .page-about .position-layout {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 28px;
    align-items: stretch;
  }

  /* 横向时间轴 */
  .page-about .timeline-stage {
    padding: 8px 4px;
  }
  .page-about .timeline-list {
    flex-direction: row;
    gap: 0;
    justify-content: space-between;
    align-items: stretch;
  }
  .page-about .timeline-item {
    flex: 1;
    margin: 0 6px;
    padding: 48px 22px 22px;
    border-left: 1px solid var(--line);
    border-top: 3px solid var(--gold);
    border-radius: 0 0 14px 14px;
    background: linear-gradient(180deg, rgba(212, 175, 55, 0.08), rgba(24, 24, 24, 0.5) 24%);
  }
  .page-about .timeline-item::before {
    left: 50%;
    top: -5px;
    transform: translateX(-50%) rotate(45deg);
    box-shadow: 0 0 0 4px var(--gold-dim);
  }
  .page-about .timeline-item:hover {
    transform: translateY(-6px);
  }
  .page-about .cert-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .page-about .service-layout {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 28px;
    align-items: center;
  }
  .page-about .service-visual {
    order: 0;
  }
  .page-about .trust-strip .page-container {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* ===== 减动效 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition: none !important;
    animation: none !important;
  }
}