.page-about {
  background: var(--color-cream);
  color: var(--color-ink);
  font-family: var(--font-body);
  overflow: hidden;
}

/* ===== 首屏区域 ===== */
.page-about .about-hero {
  background: var(--color-deep);
  position: relative;
  overflow: hidden;
  padding: 3rem 0 4.5rem;
  color: var(--color-cream);
}

.page-about .about-hero::before {
  content: '';
  position: absolute;
  top: -4rem;
  right: -8rem;
  width: 34rem;
  height: 34rem;
  background: linear-gradient(135deg, rgba(200, 153, 92, 0.28), rgba(200, 153, 92, 0.05) 60%, transparent 100%);
  transform: rotate(15deg);
  border: 2px solid rgba(200, 153, 92, 0.35);
  border-radius: 3rem;
  pointer-events: none;
}

.page-about .about-hero::after {
  content: '';
  position: absolute;
  left: -3rem;
  bottom: 0;
  width: 120%;
  height: 0.375rem;
  background: linear-gradient(90deg, var(--color-gold) 0%, var(--color-red) 45%, var(--color-gold) 100%);
  opacity: 0.8;
  pointer-events: none;
}

.page-about .about-hero-inner {
  position: relative;
  display: grid;
  gap: 2.5rem;
}

.page-about .about-hero-copy {
  max-width: 46rem;
}

.page-about .breadcrumb {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: rgba(245, 240, 230, 0.72);
  margin-bottom: 2rem;
}

.page-about .breadcrumb a {
  color: rgba(245, 240, 230, 0.72);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.page-about .breadcrumb-sep {
  margin: 0 0.55rem;
  color: var(--color-gold);
}

.page-about .hero-kicker {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-gold);
  padding: 0.4rem 0.9rem;
  border: 1px solid rgba(200, 153, 92, 0.6);
  border-radius: 999px;
  margin-bottom: 1.25rem;
}

.page-about .about-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.1rem, 4.8vw, 3.6rem);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 1.4rem;
}

.page-about .about-hero .hero-kicker + h1 {
  margin-top: 0.2rem;
}

.page-about .about-hero-copy > p:not(.hero-kicker) {
  font-size: 1.05rem;
  line-height: 1.85;
  color: rgba(245, 240, 230, 0.88);
  margin: 0 0 2.2rem;
  max-width: 40rem;
}

.page-about .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.page-about .hero-actions .btn {
  padding: 0.8rem 1.7rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  border-radius: 6px;
  text-decoration: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.page-about .hero-actions .btn-primary {
  background: var(--color-gold);
  color: var(--color-deep);
}

.page-about .hero-actions .btn-primary:hover,
.page-about .hero-actions .btn-primary:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 10px 24px rgba(200, 153, 92, 0.35);
}

.page-about .hero-actions .btn-outline {
  color: var(--color-cream);
  border: 1px solid rgba(245, 240, 230, 0.4);
}

.page-about .hero-actions .btn-outline:hover,
.page-about .hero-actions .btn-outline:focus-visible {
  border-color: var(--color-gold);
  color: var(--color-gold);
  transform: translateY(-3px);
}

.page-about .about-hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  align-self: end;
}

.page-about .hero-stat-item {
  background: rgba(10, 37, 64, 0.7);
  border: 1px solid rgba(200, 153, 92, 0.28);
  border-left: 4px solid var(--color-gold);
  border-radius: 10px;
  padding: 1.2rem 1rem;
  text-align: center;
  backdrop-filter: blur(4px);
  transition: transform 0.28s ease, border-color 0.28s ease;
}

.page-about .hero-stat-item:hover {
  transform: translateY(-5px);
  border-color: var(--color-gold);
}

.page-about .hero-stat-item strong {
  display: block;
  font-family: var(--font-data);
  font-size: clamp(1.5rem, 3vw, 2.05rem);
  font-weight: 700;
  color: var(--color-gold);
  line-height: 1.1;
}

.page-about .hero-stat-item span {
  display: block;
  margin-top: 0.4rem;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  color: rgba(245, 240, 230, 0.82);
  letter-spacing: 0.06em;
}

/* ===== 通用段落标题 ===== */
.page-about .section-head {
  max-width: 52rem;
  margin-bottom: 2.5rem;
}

.page-about .section-head h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.7rem, 3.4vw, 2.4rem);
  font-weight: 900;
  line-height: 1.28;
  letter-spacing: -0.02em;
  color: var(--color-deep);
  margin: 0.55rem 0 0.8rem;
}

.page-about .section-head p {
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-mist);
  margin: 0;
}

.page-about .eyebrow {
  font-family: var(--font-heading);
  display: inline-block;
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-clay);
  padding: 0.25rem 0;
  border-bottom: 2px solid var(--color-gold);
}

/* ===== 品牌历程 ===== */
.page-about .about-journey {
  background: var(--color-cream);
  padding: 4.5rem 0 5rem;
}

.page-about .journey-media {
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  margin-bottom: 3rem;
  max-width: 50rem;
}

.page-about .journey-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(10, 37, 64, 0.32) 100%);
  pointer-events: none;
}

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

.page-about .media-note {
  position: absolute;
  left: 1.25rem;
  bottom: 1rem;
  z-index: 2;
  font-family: var(--font-heading);
  font-size: 0.82rem;
  color: var(--color-cream);
  background: rgba(10, 37, 64, 0.6);
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  border-left: 3px solid var(--color-gold);
}

.page-about .journey-timeline {
  position: relative;
  padding-left: 0;
  max-width: 50rem;
  margin: 0 auto;
}

.page-about .journey-timeline::before {
  content: '';
  position: absolute;
  left: 0.8rem;
  top: 0.15rem;
  bottom: 0.35rem;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-gold), var(--color-deep) 55%, var(--color-stone));
}

.page-about .tl-row {
  position: relative;
  padding-left: 3.2rem;
  margin-bottom: 2.1rem;
}

.page-about .tl-row:last-child {
  margin-bottom: 0;
}

.page-about .tl-node {
  position: absolute;
  left: 0;
  top: 0.2rem;
  width: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
}

.page-about .tl-dot {
  width: 1.05rem;
  height: 1.05rem;
  background: var(--color-gold);
  border: 3px solid var(--color-deep);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--color-cream), 0 0 0 5px rgba(200, 153, 92, 0.4);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .tl-row:hover .tl-dot,
.page-about .tl-row:focus-within .tl-dot {
  transform: scale(1.25);
  box-shadow: 0 0 0 5px var(--color-cream), 0 0 0 7px rgba(200, 153, 92, 0.55);
}

.page-about .tl-content {
  background: var(--color-cream);
  border: 1px solid rgba(10, 37, 64, 0.1);
  border-left: 4px solid var(--color-gold);
  border-radius: 12px;
  padding: 1.25rem 1.4rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.28s ease, box-shadow 0.28s ease;
}

.page-about .tl-row:hover .tl-content,
.page-about .tl-row:focus-within .tl-content {
  transform: translateY(-3px) translateX(4px);
  box-shadow: var(--shadow-md);
}

.page-about .tl-tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--color-clay);
  background: rgba(160, 82, 45, 0.1);
  padding: 0.25rem 0.7rem;
  border-radius: 999px;
  margin-bottom: 0.6rem;
}

.page-about .tl-content h3 {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-deep);
  margin: 0 0 0.45rem;
}

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

/* ===== 服务理念 ===== */
.page-about .about-values {
  background: var(--color-cream);
  padding: 4.5rem 0 5rem;
}

.page-about .values-grid {
  display: grid;
  gap: 1.5rem;
}

.page-about .value-card {
  position: relative;
  background: var(--color-cream);
  border: 1px solid rgba(10, 37, 64, 0.12);
  border-radius: 14px;
  padding: 2rem 1.6rem 1.8rem;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .value-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 5px;
  height: 100%;
  background: linear-gradient(180deg, var(--color-gold), var(--color-red));
}

.page-about .value-card:hover,
.page-about .value-card:focus-within {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.page-about .value-index {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-family: var(--font-data);
  font-size: 0.9rem;
  font-weight: 700;
  color: rgba(10, 37, 64, 0.35);
  letter-spacing: 0.12em;
}

.page-about .value-symbol {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3.4rem;
  height: 3.4rem;
  border-radius: 12px;
  background: var(--color-deep);
  color: var(--color-gold);
  font-family: var(--font-heading);
  font-size: 1.45rem;
  font-weight: 900;
  margin-bottom: 1.2rem;
}

.page-about .value-card h3 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-deep);
  margin: 0 0 0.7rem;
}

.page-about .value-card > p {
  font-size: 0.95rem;
  line-height: 1.72;
  color: var(--color-ink);
  margin: 0 0 1.2rem;
}

.page-about .value-points {
  list-style: none;
  margin: 0;
  padding: 0.8rem 0 0;
  border-top: 1px solid rgba(10, 37, 64, 0.1);
}

.page-about .value-points li {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  color: var(--color-mist);
  padding: 0.45rem 0 0.45rem 1.35rem;
  position: relative;
}

.page-about .value-points li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.85rem;
  width: 0.55rem;
  height: 0.55rem;
  background: var(--color-gold);
  transform: rotate(45deg);
}

/* ===== 里程碑节点 ===== */
.page-about .about-milestones {
  background: var(--color-deep);
  position: relative;
  overflow: hidden;
  padding: 5rem 0 5.5rem;
}

.page-about .about-milestones::before {
  content: '';
  position: absolute;
  top: -8rem;
  right: -6rem;
  width: 28rem;
  height: 28rem;
  border: 2px solid rgba(200, 153, 92, 0.14);
  border-radius: 50%;
  pointer-events: none;
}

.page-about .about-milestones::after {
  content: '';
  position: absolute;
  left: -4rem;
  bottom: -6rem;
  width: 18rem;
  height: 18rem;
  border: 1px solid rgba(230, 57, 70, 0.25);
  transform: rotate(35deg);
  pointer-events: none;
}

.page-about .about-milestones .container,
.page-about .about-milestones .section-head {
  position: relative;
  z-index: 1;
}

.page-about .about-milestones .section-head h2 {
  color: var(--color-cream);
}

.page-about .about-milestones .section-head p {
  color: rgba(245, 240, 230, 0.7);
}

.page-about .about-milestones .eyebrow {
  color: var(--color-gold);
  border-bottom-color: var(--color-red);
}

.page-about .milestone-list {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 1.4rem;
  margin-top: 2.5rem;
}

.page-about .milestone-item {
  display: grid;
  grid-template-columns: 1fr;
  align-items: start;
  background: rgba(245, 240, 230, 0.06);
  border: 1px solid rgba(245, 240, 230, 0.12);
  border-left: 4px solid var(--color-gold);
  border-radius: 12px;
  padding: 1.4rem;
  transition: background 0.3s ease, transform 0.3s ease;
}

.page-about .milestone-item:hover,
.page-about .milestone-item:focus-within {
  background: rgba(245, 240, 230, 0.1);
  transform: translateX(6px);
}

.page-about .milestone-badge {
  font-family: var(--font-heading);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: var(--color-deep);
  background: var(--color-gold);
  display: inline-block;
  align-self: start;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  margin-bottom: 0.9rem;
  width: fit-content;
}

.page-about .milestone-copy h3 {
  font-family: var(--font-heading);
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--color-cream);
  margin: 0 0 0.4rem;
}

.page-about .milestone-copy p {
  font-size: 0.92rem;
  line-height: 1.7;
  color: rgba(245, 240, 230, 0.75);
  margin: 0;
}

.page-about .milestone-cta {
  margin-top: 3rem;
  text-align: center;
}

.page-about .milestone-cta .btn {
  padding: 0.85rem 1.9rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: 6px;
  text-decoration: none;
  display: inline-block;
}

.page-about .milestone-cta .btn-primary {
  background: var(--color-gold);
  color: var(--color-deep);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.page-about .milestone-cta .btn-primary:hover,
.page-about .milestone-cta .btn-primary:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(200, 153, 92, 0.35);
}

/* ===== 认证与荣誉 ===== */
.page-about .about-credentials {
  background: var(--color-stone);
  padding: 4.5rem 0 5rem;
}

.page-about .credential-grid {
  display: grid;
  gap: 3rem;
  align-items: center;
}

.page-about .cert-tree {
  position: relative;
}

.page-about .tree-top {
  text-align: center;
  margin-bottom: 2.5rem;
  position: relative;
}

.page-about .tree-root-label {
  display: inline-block;
  background: var(--color-deep);
  color: var(--color-cream);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  padding: 0.9rem 1.8rem;
  border-radius: 999px;
  box-shadow: var(--shadow-md);
  position: relative;
}

.page-about .tree-top::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: -2.5rem;
  width: 2px;
  height: 2.5rem;
  background: linear-gradient(to bottom, var(--color-deep), var(--color-gold));
  transform: translateX(-50%);
}

.page-about .tree-branches {
  position: relative;
  display: grid;
  gap: 1.2rem;
}

.page-about .tree-branches::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0.7rem;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-gold), transparent 70%);
}

.page-about .tree-branch {
  position: relative;
  padding-left: 2.4rem;
  background: rgba(245, 240, 230, 0.85);
  border-radius: 10px;
  padding: 1.2rem 1.2rem 1.2rem 2.4rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.28s ease, box-shadow 0.28s ease;
}

.page-about .tree-branch::before {
  content: '';
  position: absolute;
  left: 0.68rem;
  top: 1.55rem;
  width: 1.15rem;
  height: 2px;
  background: var(--color-gold);
}

.page-about .tree-branch:hover,
.page-about .tree-branch:focus-within {
  transform: translateX(5px);
  box-shadow: var(--shadow-md);
}

.page-about .tree-branch-icon {
  position: absolute;
  left: -0.3rem;
  top: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: var(--color-deep);
  color: var(--color-gold);
  font-family: var(--font-data);
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: 50%;
  border: 3px solid var(--color-stone);
  z-index: 2;
}

.page-about .tree-branch-copy h3 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--color-deep);
  margin: 0 0 0.35rem;
}

.page-about .tree-branch-copy p {
  font-size: 0.9rem;
  line-height: 1.68;
  color: var(--color-ink);
  margin: 0;
}

.page-about .credential-media {
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.page-about .credential-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 600px;
  margin: 0 auto;
  object-fit: cover;
}

/* ===== 本地化服务 ===== */
.page-about .about-local {
  background: var(--color-cream);
  padding: 4.5rem 0 5rem;
}

.page-about .local-grid {
  display: grid;
  gap: 2.5rem;
  align-items: start;
}

.page-about .local-media {
  position: relative;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.page-about .local-media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(10, 37, 64, 0.08), rgba(10, 37, 64, 0.32) 85%);
  pointer-events: none;
}

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

.page-about .local-content {
  display: grid;
  gap: 1.4rem;
}

.page-about .local-feature {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  background: var(--color-cream);
  border: 1px solid rgba(10, 37, 64, 0.12);
  border-radius: 12px;
  padding: 1.3rem;
  transition: transform 0.28s ease, box-shadow 0.28s ease;
}

.page-about .local-feature:hover,
.page-about .local-feature:focus-within {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.page-about .local-feature-num {
  width: 2.4rem;
  height: 2.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-deep);
  color: var(--color-gold);
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: 8px;
}

.page-about .local-feature h3 {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--color-deep);
  margin: 0 0 0.35rem;
}

.page-about .local-feature p {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--color-ink);
  margin: 0;
  word-break: break-word;
}

.page-about .local-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.6rem;
}

.page-about .local-actions .btn {
  padding: 0.8rem 1.6rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 6px;
  text-decoration: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.page-about .local-actions .btn-primary {
  background: var(--color-deep);
  color: var(--color-cream);
}

.page-about .local-actions .btn-primary:hover,
.page-about .local-actions .btn-primary:focus-visible {
  transform: translateY(-3px);
  box-shadow: 0 10px 26px rgba(10, 37, 64, 0.32);
}

.page-about .local-actions .btn-outline {
  color: var(--color-deep);
  border: 1px solid rgba(10, 37, 64, 0.4);
}

.page-about .local-actions .btn-outline:hover,
.page-about .local-actions .btn-outline:focus-visible {
  border-color: var(--color-gold);
  color: var(--color-clay);
  transform: translateY(-3px);
}

/* ===== 响应式：中屏及以上 ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 4.5rem 0 6rem;
  }

  .page-about .about-hero-inner {
    grid-template-columns: 1.2fr 1fr;
    gap: 3rem;
    align-items: end;
  }

  .page-about .about-hero-stats {
    grid-template-columns: 1fr;
    gap: 1.1rem;
  }

  .page-about .hero-stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.4rem 1.1rem;
  }

  .page-about .values-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.8rem;
  }

  .page-about .milestone-item {
    grid-template-columns: auto 1fr;
    gap: 1.6rem;
    padding: 1.6rem 1.8rem;
  }

  .page-about .milestone-badge {
    margin-bottom: 0;
    min-width: 11rem;
    text-align: center;
  }

  .page-about .credential-grid {
    grid-template-columns: 1.25fr 0.85fr;
    gap: 3.5rem;
  }

  .page-about .tree-branches {
    grid-template-columns: 1fr 1fr;
    gap: 1.1rem;
  }

  .page-about .tree-branch:nth-child(odd) {
    margin-right: 0.4rem;
  }

  .page-about .tree-branch:nth-child(even) {
    margin-left: 0.4rem;
  }

  .page-about .local-grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 3rem;
  }

  .page-about .local-media {
    position: sticky;
    top: 2rem;
  }
}

/* ===== 响应式：大屏优化 ===== */
@media (min-width: 992px) {
  .page-about .about-hero-inner {
    grid-template-columns: 1.25fr 0.75fr;
    padding-top: 1rem;
  }

  .page-about .about-hero h1 {
    font-size: 3.4rem;
  }

  .page-about .journey-media,
  .page-about .journey-timeline {
    max-width: 54rem;
    margin-left: 0;
    margin-right: auto;
  }

  .page-about .section-head {
    margin-bottom: 3rem;
  }

  .page-about .about-values {
    padding: 6rem 0;
  }

  .page-about .value-card {
    padding: 2.4rem 2rem 2rem;
  }

  .page-about .about-milestones {
    padding: 6.5rem 0;
  }

  .page-about .milestone-list {
    gap: 1.8rem;
  }

  .page-about .milestone-item {
    padding: 1.8rem 2.2rem;
    border-left-width: 6px;
  }

  .page-about .about-credentials {
    padding: 6rem 0;
  }

  .page-about .tree-branch {
    padding-left: 2.6rem;
  }

  .page-about .about-local {
    padding: 6rem 0;
  }

  .page-about .local-feature {
    padding: 1.6rem 1.8rem;
  }
}