.page-about {
  --about-gold-line: linear-gradient(90deg, rgba(212, 175, 55, 0.7), rgba(212, 175, 55, 0));
  --about-teal-deep: rgba(18, 63, 61, 0.5);
  --about-purple-glow: rgba(59, 42, 94, 0.55);
  --about-burgundy-glow: rgba(94, 18, 36, 0.35);
  background: #071527;
  color: var(--color-body-light);
  overflow: hidden;
}

.page-about .container {
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--spacing-3);
}

/* ===== 面包屑 ===== */
.page-about .breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-1);
  padding-top: var(--spacing-5);
  font-family: var(--font-data);
  font-size: 0.82rem;
  color: var(--color-body-muted);
}

.page-about .breadcrumb a {
  color: var(--color-gold-soft);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

.page-about .breadcrumb-sep {
  opacity: 0.5;
}

/* ===== Hero 区 ===== */
.page-about .about-hero {
  position: relative;
  background:
    radial-gradient(ellipse at 72% 12%, rgba(212, 175, 55, 0.12), transparent 42%),
    linear-gradient(180deg, #0A1E3C 0%, #091B33 100%);
  padding-block: var(--spacing-2) var(--spacing-7);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  right: -70px;
  top: 60px;
  width: 280px;
  height: 280px;
  border: 1px solid rgba(212, 175, 55, 0.16);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(139, 43, 226, 0.12), transparent 68%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 38%;
  bottom: -1px;
  height: 1px;
  width: 62%;
  background: var(--about-gold-line);
  pointer-events: none;
}

.page-about .brand-eyebrow {
  margin-top: var(--spacing-6);
  font-family: var(--font-data);
  font-size: 0.74rem;
  letter-spacing: 0.34em;
  text-transform: uppercase;
  color: var(--color-gold);
}

.page-about .page-title {
  max-width: 16em;
  margin-top: var(--spacing-3);
  margin-bottom: 0;
  font-size: clamp(1.7rem, 3.4vw, 2.5rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--color-body-light);
}

.page-about .page-subtitle {
  max-width: 38em;
  margin-top: var(--spacing-3);
  margin-bottom: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-body-muted);
}

.page-about .hero-data-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-3);
  margin: var(--spacing-6) 0 0;
  padding: 0;
}

.page-about .hero-data-item {
  position: relative;
  background: var(--color-glass);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  padding: var(--spacing-3) var(--spacing-4);
  backdrop-filter: blur(8px);
}

.page-about .hero-data-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: var(--color-gold);
  opacity: 0.65;
}

.page-about .hero-data-item dt {
  margin-bottom: var(--spacing-1);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--color-body-muted);
}

.page-about .hero-data-item dd {
  margin: 0;
  padding: 0;
  font-family: var(--font-data);
  font-size: 1.45rem;
  line-height: 1.25;
  font-weight: 600;
  color: var(--color-gold-soft);
}

/* ===== 通用区块标题 ===== */
.page-about .section-heading {
  margin-bottom: var(--spacing-5);
}

.page-about .section-heading h2 {
  margin: 0 0 var(--spacing-2);
  font-size: 1.55rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--color-body-light);
}

.page-about .section-heading p {
  max-width: 42em;
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.96rem;
  line-height: 1.75;
  color: var(--color-body-muted);
}

/* ===== 品牌历程 ===== */
.page-about .journey-section {
  position: relative;
  background:
    radial-gradient(ellipse at 8% 30%, var(--about-teal-deep), transparent 55%),
    linear-gradient(180deg, #091B33 0%, #0A1E3C 55%, #06111F 100%);
  padding-block: var(--spacing-7) var(--spacing-7);
}

.page-about .journey-section::before {
  content: "";
  position: absolute;
  right: -50px;
  top: 140px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.08), transparent 70%);
  pointer-events: none;
}

.page-about .journey-figure {
  margin: 0 0 var(--spacing-6);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #06111F;
  max-width: 100%;
}

.page-about .journey-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .journey-figure figcaption,
.page-about .cert-figure figcaption,
.page-about .team-figure figcaption {
  padding: var(--spacing-2) var(--spacing-3);
  font-family: var(--font-data);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--color-body-muted);
  background: rgba(212, 175, 55, 0.06);
  border-top: 1px solid rgba(212, 175, 55, 0.14);
}

/* 时间轴 */
.page-about .timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-gold) 0%, rgba(212, 175, 55, 0.12) 100%);
}

.page-about .timeline-item {
  position: relative;
  padding-left: var(--spacing-5);
  padding-bottom: var(--spacing-5);
}

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

.page-about .timeline-year {
  display: inline-block;
  margin-bottom: var(--spacing-2);
  font-family: var(--font-data);
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-gold-soft);
}

.page-about .timeline-dot {
  position: absolute;
  left: 2px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-gold);
  box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.18);
}

.page-about .timeline-card {
  background: var(--color-glass);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--radius-md);
  padding: var(--spacing-3);
  backdrop-filter: blur(8px);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.page-about .timeline-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-panel);
}

.page-about .timeline-card summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-2);
  cursor: pointer;
  list-style: none;
}

.page-about .timeline-card summary::-webkit-details-marker {
  display: none;
}

.page-about .timeline-card summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-data);
  font-size: 1.1rem;
  line-height: 1;
  color: var(--color-gold);
  transition: transform 0.25s ease;
}

.page-about .timeline-card details[open] summary::after {
  transform: rotate(45deg);
}

.page-about .timeline-title {
  font-family: var(--font-heading);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--color-body-light);
}

.page-about .timeline-tag {
  display: inline-block;
  padding: 2px 9px;
  border: 1px solid rgba(212, 175, 55, 0.5);
  border-radius: 999px;
  font-family: var(--font-data);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--color-gold-soft);
}

.page-about .timeline-card p {
  margin: var(--spacing-2) 0 0;
  font-family: var(--font-body);
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--color-body-muted);
}

/* ===== 资质认证体系 ===== */
.page-about .cert-section {
  background:
    radial-gradient(ellipse at 14% 18%, var(--about-purple-glow), transparent 52%),
    linear-gradient(180deg, #06111F 0%, #0A1E3C 100%);
  padding-block: var(--spacing-7);
}

.page-about .cert-layout {
  display: grid;
  gap: var(--spacing-5);
}

.page-about .cert-figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border-dark);
  background: #06111F;
}

.page-about .cert-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .cert-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--spacing-4);
}

.page-about .cert-item {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: var(--spacing-3);
  align-items: start;
  padding: var(--spacing-3);
  background: rgba(255, 255, 255, 0.07);
  border-left: 3px solid var(--color-gold);
  border-radius: var(--radius-md);
  transition: background var(--transition-base), transform var(--transition-base);
}

.page-about .cert-item:hover {
  background: rgba(255, 255, 255, 0.11);
  transform: translateX(3px);
}

.page-about .cert-icon {
  width: 14px;
  height: 14px;
  margin-top: 5px;
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-soft));
  border-radius: 3px;
  transform: rotate(45deg);
  box-shadow: 0 0 12px rgba(212, 175, 55, 0.35);
}

.page-about .cert-body h3 {
  margin: 0 0 var(--spacing-1);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--color-body-light);
}

.page-about .cert-body p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-body-muted);
}

/* ===== 团队与组织 ===== */
.page-about .team-section {
  background:
    radial-gradient(ellipse at 85% 22%, var(--about-burgundy-glow), transparent 48%),
    linear-gradient(180deg, #0A1E3C 0%, #08162A 100%);
  padding-block: var(--spacing-7);
}

.page-about .team-layout {
  display: grid;
  gap: var(--spacing-5);
}

.page-about .team-figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border-dark);
  background: #06111F;
}

.page-about .team-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-about .team-lead {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.85;
  color: var(--color-body-muted);
}

.page-about .team-stat-grid {
  list-style: none;
  margin: var(--spacing-4) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-3);
}

.page-about .team-stat-grid li {
  padding: var(--spacing-3) var(--spacing-2);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  text-align: center;
}

.page-about .stat-num {
  display: block;
  font-family: var(--font-data);
  font-size: 1.45rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-gold-soft);
}

.page-about .stat-label {
  display: block;
  margin-top: var(--spacing-1);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--color-body-muted);
}

.page-about .org-band {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-2);
  margin-top: var(--spacing-5);
  padding: var(--spacing-3) var(--spacing-4);
  background: rgba(212, 175, 55, 0.08);
  border: 1px solid rgba(212, 175, 55, 0.18);
  border-radius: var(--radius-md);
}

.page-about .org-band-title {
  margin-right: var(--spacing-2);
  font-family: var(--font-data);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--color-gold);
}

.page-about .org-tag {
  display: inline-block;
  padding: 4px 14px;
  border: 1px solid rgba(212, 175, 55, 0.3);
  border-radius: 999px;
  font-size: 0.82rem;
  color: var(--color-body-light);
  background: rgba(6, 17, 31, 0.35);
}

/* ===== 本地化服务 ===== */
.page-about .local-section {
  background:
    radial-gradient(ellipse at 80% 80%, var(--about-teal-deep), transparent 55%),
    linear-gradient(180deg, #08162A 0%, #0A1E3C 60%, #06111F 100%);
  padding-block: var(--spacing-7);
}

.page-about .local-grid {
  display: grid;
  gap: var(--spacing-4);
}

.page-about .local-card {
  position: relative;
  padding: var(--spacing-6) var(--spacing-4) var(--spacing-4);
  background:
    linear-gradient(160deg, rgba(18, 63, 61, 0.85), rgba(10, 30, 60, 0.92));
  border: 1px solid rgba(212, 175, 55, 0.18);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.page-about .local-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-panel);
}

.page-about .local-num {
  position: absolute;
  top: 6px;
  right: 14px;
  font-family: var(--font-data);
  font-size: 3.2rem;
  font-weight: 700;
  line-height: 1;
  color: rgba(212, 175, 55, 0.14);
  pointer-events: none;
}

.page-about .local-card h3 {
  margin: 0 0 var(--spacing-2);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-body-light);
}

.page-about .local-card p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 0.92rem;
  line-height: 1.75;
  color: var(--color-body-muted);
}

/* ===== 相关指引 ===== */
.page-about .guide-section {
  padding-block: var(--spacing-7);
  background: #06111F;
}

.page-about .guide-title {
  margin: 0 0 var(--spacing-4);
  font-size: 1.3rem;
  letter-spacing: 0.01em;
  color: var(--color-body-light);
}

.page-about .guide-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-3);
}

/* ===== 桌面端 ===== */
@media (min-width: 768px) {
  .page-about .hero-data-row {
    grid-template-columns: repeat(4, 1fr);
    margin-top: var(--spacing-7);
  }

  .page-about .hero-data-item dd {
    font-size: 1.6rem;
  }

  .page-about .section-heading {
    margin-bottom: var(--spacing-6);
  }

  .page-about .section-heading h2 {
    font-size: 1.85rem;
  }

  /* 时间轴改为左侧年份 + 中间节点 + 右侧卡片 */
  .page-about .timeline::before {
    left: 155px;
  }

  .page-about .timeline-item {
    display: grid;
    grid-template-columns: 140px 32px 1fr;
    gap: 0;
    align-items: start;
    padding-left: 0;
    padding-bottom: var(--spacing-5);
  }

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

  .page-about .timeline-year {
    margin-bottom: 0;
    padding-top: 8px;
    padding-right: var(--spacing-3);
    text-align: right;
    font-size: 0.92rem;
  }

  .page-about .timeline-dot {
    position: static;
    justify-self: center;
    align-self: start;
    margin-top: 10px;
  }

  .page-about .timeline-card {
    padding: var(--spacing-4);
  }

  .page-about .timeline-card p {
    font-size: 0.96rem;
  }

  /* 资质认证左右分栏 */
  .page-about .cert-layout {
    grid-template-columns: minmax(300px, 0.85fr) 1.15fr;
    align-items: center;
  }

  .page-about .cert-list {
    gap: var(--spacing-3);
  }

  .page-about .cert-item {
    grid-template-columns: 36px 1fr;
  }

  /* 团队左右分栏 */
  .page-about .team-layout {
    grid-template-columns: 1fr 1.15fr;
    align-items: center;
  }

  .page-about .team-stat-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4);
  }

  /* 本地化三列 */
  .page-about .local-grid {
    grid-template-columns: 1.15fr 1fr 1fr;
    gap: var(--spacing-4);
  }
}

@media (min-width: 1200px) {
  .page-about .journey-section::after {
    content: "";
    position: absolute;
    right: 40px;
    bottom: 40px;
    width: 320px;
    height: 160px;
    background:
      linear-gradient(180deg, rgba(212, 175, 55, 0.06), rgba(212, 175, 55, 0.02));
    clip-path: polygon(0 100%, 0 55%, 12% 55%, 12% 30%, 26% 30%, 26% 0, 40% 0, 40% 30%, 56% 30%, 56% 52%, 70% 52%, 70% 68%, 82% 68%, 82% 82%, 100% 82%, 100% 100%);
    pointer-events: none;
    z-index: 0;
  }

  .page-about .journey-section .container {
    position: relative;
    z-index: 1;
  }
}