.page-about {
  --about-font-heading: 'Anton', 'Impact', 'Source Han Sans Heavy', sans-serif;
  --about-radius: 16px;
  --about-clip: 4deg;
  color: var(--text-light);
  overflow-x: hidden;
  background-color: var(--pitch-deep);
}

/* ========== Hero ========== */
.page-about .about-hero {
  position: relative;
  padding: 44px 0 72px;
  background:
    radial-gradient(ellipse at 82% 10%, rgba(211, 175, 78, 0.14), transparent 48%),
    linear-gradient(135deg, var(--pitch-mid) 0%, var(--pitch-deep) 55%, var(--night-black) 100%);
}

.page-about .about-hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(232, 240, 234, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(232, 240, 234, 0.04) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}

.page-about .about-hero::after {
  content: '';
  position: absolute;
  right: 0;
  bottom: 0;
  width: 46%;
  height: 24px;
  background: linear-gradient(90deg, transparent, rgba(211, 175, 78, 0.22));
  transform: skewX(-8deg);
  transform-origin: right bottom;
  pointer-events: none;
}

.page-about .breadcrumb {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  margin-bottom: 32px;
  color: var(--text-muted);
}

.page-about .breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.25s ease;
}

.page-about .breadcrumb a:hover {
  color: var(--gold-light);
}

.page-about .breadcrumb-sep {
  color: var(--victory-gold);
}

.page-about .about-hero-layout {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 40px;
}

.page-about .about-hero-eyebrow {
  font-family: var(--font-data);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--victory-gold);
  font-size: 0.78rem;
  margin-bottom: 12px;
}

.page-about .about-hero h1 {
  font-family: var(--font-heading);
  font-size: 2.15rem;
  line-height: 1.12;
  letter-spacing: 0.01em;
  margin-bottom: 16px;
  max-width: 680px;
}

.page-about .about-hero-lead {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.7;
  max-width: 580px;
  margin-bottom: 28px;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero-meta {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.page-about .hero-stat {
  background: rgba(10, 14, 18, 0.45);
  border: 1px solid rgba(211, 175, 78, 0.28);
  border-radius: 14px;
  padding: 18px 10px;
  text-align: center;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  transition: transform 0.3s var(--ease-out), border-color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

.page-about .hero-stat:hover {
  transform: translateY(-4px);
  border-color: var(--victory-gold);
  box-shadow: 0 10px 30px rgba(10, 14, 18, 0.4);
}

.page-about .hero-stat-num {
  display: block;
  font-family: var(--font-data);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--gold-light);
  line-height: 1.15;
  white-space: nowrap;
}

.page-about .hero-stat-num small {
  font-size: 0.78rem;
  margin-left: 1px;
  color: var(--victory-gold);
}

.page-about .hero-stat-label {
  display: block;
  margin-top: 6px;
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* ========== Section head ========== */
.page-about .section-head {
  position: relative;
  padding-left: 46px;
  margin-bottom: 36px;
}

.page-about .section-index {
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-data);
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  color: rgba(211, 175, 78, 0.35);
  letter-spacing: 0.02em;
}

.page-about .section-eyebrow {
  font-family: var(--font-data);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--victory-gold);
  margin-bottom: 6px;
}

.page-about .section-head h2 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  line-height: 1.15;
  margin-bottom: 8px;
}

.page-about .section-desc {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
  max-width: 620px;
}

/* ========== 通用图片 ========== */
.page-about img {
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--about-radius);
}

/* ========== 品牌里程碑 ========== */
.page-about .about-milestone {
  position: relative;
  padding: 56px 0 72px;
  background:
    linear-gradient(180deg, var(--pitch-deep) 0%, #0E4A36 100%);
}

.page-about .about-milestone::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--victory-gold), transparent 70%);
}

.page-about .about-milestone-hero {
  position: relative;
  margin: 28px 0 48px;
}

.page-about .about-milestone-hero::after {
  content: '';
  position: absolute;
  inset: 12px -12px -12px 12px;
  border: 1px solid rgba(211, 175, 78, 0.32);
  border-radius: 18px;
  z-index: 0;
  pointer-events: none;
}

.page-about .about-milestone-hero img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
}

/* ========== 时间线 ========== */
.page-about .about-timeline {
  position: relative;
  margin-top: 16px;
}

.page-about .about-timeline::before {
  content: '';
  position: absolute;
  left: 14px;
  top: 4px;
  bottom: 4px;
  width: 2px;
  background: linear-gradient(180deg, var(--victory-gold) 0%, var(--pitch-mid) 60%, rgba(20, 104, 75, 0.2) 100%);
  border-radius: 2px;
}

.page-about .timeline-item {
  position: relative;
  padding-left: 48px;
  margin-bottom: 32px;
}

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

.page-about .timeline-marker {
  position: absolute;
  left: 2px;
  top: 12px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--night-black);
  border: 2px solid var(--victory-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--victory-gold);
  z-index: 2;
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), background-color 0.3s var(--ease-out);
}

.page-about .timeline-marker svg {
  width: 13px;
  height: 13px;
  display: block;
}

.page-about .timeline-item:hover .timeline-marker {
  transform: scale(1.18);
  background: var(--pitch-mid);
  box-shadow: 0 0 0 6px rgba(211, 175, 78, 0.18);
}

.page-about .timeline-card {
  position: relative;
  background: rgba(10, 14, 18, 0.4);
  border: 1px solid rgba(211, 175, 78, 0.2);
  border-left: 3px solid var(--victory-gold);
  border-radius: 4px var(--about-radius) var(--about-radius) 10px;
  padding: 20px 20px 22px;
  transition: transform 0.35s var(--ease-out), background-color 0.35s var(--ease-out), border-color 0.35s var(--ease-out);
}

.page-about .timeline-item:hover .timeline-card {
  transform: translateX(6px);
  background: rgba(20, 104, 75, 0.35);
  border-color: rgba(211, 175, 78, 0.45);
}

.page-about .timeline-year {
  display: block;
  font-family: var(--font-data);
  font-size: 2.1rem;
  font-weight: 700;
  line-height: 1;
  color: var(--victory-gold);
  letter-spacing: 0.02em;
  margin-bottom: 10px;
}

.page-about .timeline-card h3 {
  font-family: var(--about-font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-light);
  letter-spacing: 0.02em;
}

.page-about .timeline-card p {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--text-muted);
  margin: 0;
}

/* ========== 核心能力 ========== */
.page-about .about-capability {
  position: relative;
  padding: 64px 0 72px;
  background:
    radial-gradient(circle at 12% 18%, rgba(20, 104, 75, 0.5), transparent 45%),
    var(--night-black);
}

.page-about .about-capability::before {
  content: '';
  position: absolute;
  right: 0;
  top: 0;
  width: 38%;
  height: 28px;
  background: linear-gradient(180deg, rgba(211, 175, 78, 0.18), transparent);
  transform: skewX(-7deg);
  transform-origin: right top;
  pointer-events: none;
}

.page-about .about-capability-layout {
  display: grid;
  gap: 32px;
}

.page-about .capability-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.page-about .capability-card {
  position: relative;
  background: rgba(11, 61, 46, 0.5);
  border: 1px solid rgba(211, 175, 78, 0.18);
  border-radius: 14px;
  padding: 20px 14px 16px;
  text-align: center;
  overflow: hidden;
  transition: transform 0.3s var(--ease-out), border-color 0.3s var(--ease-out), background-color 0.3s var(--ease-out);
}

.page-about .capability-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--victory-gold), transparent 80%);
}

.page-about .capability-card::after {
  content: '';
  position: absolute;
  top: 12px;
  right: 12px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--victory-gold);
}

.page-about .capability-card:hover {
  transform: translateY(-4px);
  border-color: rgba(211, 175, 78, 0.5);
  background-color: rgba(20, 104, 75, 0.5);
}

.page-about .capability-num {
  display: block;
  font-family: var(--font-data);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--gold-light);
  line-height: 1.1;
  white-space: nowrap;
}

.page-about .capability-num small {
  font-size: 0.8rem;
  color: var(--victory-gold);
  margin-left: 1px;
}

.page-about .capability-label {
  display: block;
  margin-top: 8px;
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.page-about .capability-visual img {
  display: block;
  width: 100%;
  border: 1px solid rgba(211, 175, 78, 0.25);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.page-about .about-team {
  margin-top: 40px;
  padding: 24px 20px;
  background: rgba(8, 12, 16, 0.5);
  border: 1px solid rgba(211, 175, 78, 0.16);
  border-radius: var(--about-radius);
}

.page-about .about-team h3 {
  font-family: var(--about-font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-about .about-team h3::before {
  content: '';
  width: 22px;
  height: 3px;
  background: var(--victory-gold);
  border-radius: 2px;
}

.page-about .team-list {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 16px;
}

.page-about .team-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  background: rgba(11, 61, 46, 0.35);
  border-radius: 10px;
  padding: 12px 14px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.page-about .team-list strong {
  font-family: var(--font-data);
  font-size: 1.3rem;
  color: var(--gold-light);
  font-weight: 700;
}

.page-about .team-list span:last-child {
  color: var(--text-muted);
}

.page-about .about-note {
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin: 0;
  border-left: 2px solid var(--pitch-mid);
  padding-left: 14px;
}

/* ========== 资质与合规 ========== */
.page-about .about-compliance {
  position: relative;
  padding: 64px 0 72px;
  background:
    radial-gradient(ellipse at 80% 100%, rgba(211, 175, 78, 0.1), transparent 50%),
    linear-gradient(180deg, var(--pitch-deep) 0%, var(--pitch-mid) 130%);
}

.page-about .about-compliance::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, transparent, var(--victory-gold) 50%, transparent);
  opacity: 0.35;
}

.page-about .about-compliance-layout {
  display: grid;
  gap: 36px;
}

.page-about .compliance-visual {
  position: relative;
  max-width: 420px;
  margin: 0 auto;
  padding-bottom: 18px;
}

.page-about .compliance-visual::after {
  content: '';
  position: absolute;
  inset: -10px 10px 10px -10px;
  border: 1px solid rgba(211, 175, 78, 0.4);
  border-radius: 18px;
  z-index: 0;
  pointer-events: none;
}

.page-about .compliance-visual img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
}

.page-about .compliance-badge {
  position: absolute;
  z-index: 2;
  right: -8px;
  bottom: 0;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--victory-gold);
  color: var(--night-black);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 20px rgba(211, 175, 78, 0.45);
}

.page-about .compliance-badge svg {
  width: 20px;
  height: 20px;
}

.page-about .compliance-content {
  display: grid;
  gap: 16px;
}

.page-about .compliance-item {
  position: relative;
  background: rgba(10, 14, 18, 0.3);
  border: 1px solid rgba(211, 175, 78, 0.16);
  border-radius: 14px;
  padding: 20px 20px 18px 20px;
  transition: border-color 0.3s ease, background-color 0.3s ease;
}

.page-about .compliance-item:hover {
  border-color: rgba(211, 175, 78, 0.4);
  background-color: rgba(10, 14, 18, 0.45);
}

.page-about .compliance-tag {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--night-black);
  background: var(--victory-gold);
  border-radius: 4px;
  padding: 4px 10px;
  margin-bottom: 12px;
  font-weight: 700;
}

.page-about .compliance-item h3 {
  font-family: var(--about-font-heading);
  font-size: 1.02rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text-light);
}

.page-about .compliance-item p {
  font-size: 0.85rem;
  line-height: 1.65;
  color: var(--text-muted);
  margin: 0;
}

/* ========== 服务承诺 ========== */
.page-about .about-commitment {
  position: relative;
  padding: 64px 0 72px;
  background:
    radial-gradient(circle at 85% 12%, rgba(211, 175, 78, 0.12), transparent 42%),
    linear-gradient(160deg, var(--night-black) 0%, var(--pitch-deep) 70%, #0E4A36 100%);
}

.page-about .about-commitment::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 52%;
  height: 3px;
  background: linear-gradient(90deg, var(--victory-gold), transparent 90%);
}

.page-about .commitment-grid {
  display: grid;
  gap: 16px;
}

.page-about .commitment-card {
  position: relative;
  background: rgba(10, 14, 18, 0.35);
  border: 1px solid rgba(211, 175, 78, 0.18);
  border-radius: 16px;
  padding: 28px 22px 24px;
  overflow: hidden;
  transition: transform 0.3s var(--ease-out), border-color 0.3s var(--ease-out), background-color 0.3s var(--ease-out);
}

.page-about .commitment-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 4px;
  height: 100%;
  background: var(--victory-gold);
  opacity: 0.7;
}

.page-about .commitment-card:hover {
  transform: translateY(-4px);
  border-color: rgba(211, 175, 78, 0.5);
  background-color: rgba(20, 104, 75, 0.3);
}

.page-about .commitment-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(211, 175, 78, 0.16);
  border: 1px solid rgba(211, 175, 78, 0.35);
  color: var(--victory-gold);
  margin-bottom: 16px;
}

.page-about .commitment-card h3 {
  font-family: var(--about-font-heading);
  font-size: 1.08rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-light);
}

.page-about .commitment-card p {
  font-size: 0.88rem;
  line-height: 1.68;
  color: var(--text-muted);
  margin: 0;
}

.page-about .about-cta {
  margin-top: 48px;
  text-align: center;
  padding: 32px 24px;
  background: rgba(10, 14, 18, 0.4);
  border: 1px solid rgba(211, 175, 78, 0.25);
  border-radius: var(--about-radius);
}

.page-about .about-cta-text {
  font-family: var(--about-font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-light);
  margin-bottom: 20px;
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

/* ========== 桌面端媒体查询 ========== */
@media (min-width: 720px) {
  .page-about .about-hero {
    padding: 56px 0 88px;
  }

  .page-about .about-hero h1 {
    font-size: 2.8rem;
  }

  .page-about .about-hero-meta {
    gap: 14px;
  }

  .page-about .hero-stat {
    padding: 24px 16px;
  }

  .page-about .hero-stat-num {
    font-size: 2.1rem;
  }

  .page-about .section-head h2 {
    font-size: 2.2rem;
  }

  .page-about .section-index {
    font-size: 2.5rem;
  }

  .page-about .timeline-item {
    padding-left: 64px;
  }

  .page-about .about-timeline::before {
    left: 18px;
  }

  .page-about .timeline-marker {
    left: 4px;
    width: 30px;
    height: 30px;
  }

  .page-about .timeline-card {
    padding: 24px 28px;
  }

  .page-about .timeline-year {
    font-size: 2.4rem;
  }

  .page-about .capability-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .page-about .capability-card {
    padding: 24px 14px 20px;
  }

  .page-about .capability-num {
    font-size: 1.9rem;
  }

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

  .page-about .about-compliance-layout {
    grid-template-columns: 1fr 1.4fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .compliance-content {
    padding-top: 8px;
  }

  .page-about .commitment-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero-layout {
    grid-template-columns: 1fr 360px;
    gap: 56px;
    align-items: center;
  }

  .page-about .about-hero-meta {
    grid-template-columns: 1fr;
  }

  .page-about .hero-stat {
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-align: left;
    padding: 20px 22px;
  }

  .page-about .hero-stat-num {
    white-space: nowrap;
  }

  .page-about .hero-stat-label {
    margin-top: 0;
    text-align: right;
    max-width: 80px;
  }

  .page-about .about-capability-layout {
    grid-template-columns: 1.3fr 0.9fr;
    gap: 48px;
    align-items: center;
  }

  .page-about .capability-visual {
    order: 2;
  }

  .page-about .capability-copy {
    order: 1;
  }

  .page-about .committ-card {
    padding: 32px 28px;
  }

  .page-about .about-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-align: left;
    padding: 36px 40px;
  }

  .page-about .about-cta-text {
    margin-bottom: 0;
    font-size: 1.25rem;
  }
}