/* ===== 品牌故事页专属样式 ===== */
.page-about {
  display: block;
  width: 100%;
  background-color: var(--color-bg, #F5F0EB);
  color: var(--color-text, #1A1A1A);
  font-family: var(--font-body, 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---- 面包屑 ---- */
.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  padding-top: 1.5rem;
  padding-bottom: 0.5rem;
  font-size: 0.875rem;
  color: var(--color-muted, #666);
}

.page-about .breadcrumb a {
  color: var(--color-blue, #1B3A5E);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s ease;
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--color-accent, #FF6B35);
  text-decoration: underline;
  outline: none;
}

.page-about .breadcrumb-sep {
  color: var(--color-gold, #D4AF37);
  font-size: 0.625rem;
}

.page-about .breadcrumb [aria-current="page"] {
  font-weight: 400;
  color: var(--color-muted, #666);
}

/* ---- 首屏：我们的理念 ---- */
.page-about .hero-mission {
  position: relative;
  width: 100%;
  min-height: 480px;
  display: flex;
  align-items: center;
  margin-bottom: 3rem;
  overflow: hidden;
}

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

.page-about .hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  display: block;
}

.page-about .hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(27,58,94,0.85) 0%, rgba(27,58,94,0.50) 60%, rgba(245,240,235,0.20) 100%);
  z-index: 1;
}

.page-about .hero-text {
  position: relative;
  z-index: 2;
  padding: 3.5rem 1.25rem;
  max-width: 720px;
}

.page-about .hero-title {
  font-family: var(--font-heading, 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif);
  font-weight: 800;
  font-size: 2.75rem;
  line-height: 1.1;
  color: #FFFFFF;
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
  text-shadow: 0 2px 12px rgba(0,0,0,0.18);
}

.page-about .hero-sub {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-gold, #D4AF37);
  margin: 0 0 1rem;
  line-height: 1.3;
}

.page-about .hero-desc {
  font-size: 1rem;
  font-weight: 300;
  color: rgba(255,255,255,0.92);
  max-width: 600px;
  margin: 0;
  line-height: 1.7;
}

/* ---- 技能树成长路径 ---- */
.page-about .path-section {
  padding: 3rem 0 2.5rem;
  background-color: var(--color-white, #FFFFFF);
  position: relative;
}

.page-about .path-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-gold, #D4AF37), var(--color-accent, #FF6B35), var(--color-blue, #1B3A5E));
  opacity: 0.6;
}

.page-about .path-title {
  text-align: center;
  margin-bottom: 0.75rem;
}

.page-about .path-intro {
  text-align: center;
  font-size: 1.05rem;
  color: var(--color-muted, #666);
  max-width: 640px;
  margin: 0 auto 2.5rem;
  font-weight: 300;
  line-height: 1.7;
}

.page-about .path-tree {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.page-about .path-node {
  background: var(--color-bg, #F5F0EB);
  border-radius: 1.5rem;
  padding: 2rem 1.75rem;
  text-align: center;
  width: 100%;
  max-width: 400px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  box-shadow: 0 4px 16px rgba(0,0,0,0.04);
  position: relative;
}

.page-about .path-node:hover,
.page-about .path-node:focus-within {
  transform: translateY(-6px);
  box-shadow: 0 12px 36px rgba(27,58,94,0.12);
}

.page-about .node-icon-wrap {
  position: relative;
  display: inline-block;
  margin-bottom: 1rem;
  width: 120px;
  height: 120px;
}

.page-about .node-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  display: block;
  border: 3px solid var(--color-gold, #D4AF37);
  transition: border-color 0.3s ease;
}

.page-about .path-node:hover .node-img {
  border-color: var(--color-accent, #FF6B35);
}

.page-about .node-step {
  position: absolute;
  bottom: -6px;
  right: -6px;
  background: var(--color-blue, #1B3A5E);
  color: #FFFFFF;
  font-size: 0.8rem;
  font-weight: 800;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading, 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif);
  border: 2px solid var(--color-white, #FFFFFF);
}

.page-about .node-title {
  font-family: var(--font-heading, 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif);
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--color-blue, #1B3A5E);
  margin: 0 0 0.5rem;
  line-height: 1.2;
}

.page-about .node-desc {
  font-size: 0.95rem;
  color: var(--color-text, #1A1A1A);
  font-weight: 300;
  margin: 0 0 0.75rem;
  line-height: 1.6;
}

.page-about .node-detail {
  font-size: 0.85rem;
  color: var(--color-muted, #666);
  font-weight: 300;
  line-height: 1.6;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 0.25rem;
}

.page-about .path-node:hover .node-detail,
.page-about .path-node:focus-within .node-detail {
  max-height: 120px;
  padding-top: 0.5rem;
  border-top: 1px solid var(--color-border, #D9D9D9);
}

.page-about .path-connector {
  display: flex;
  justify-content: center;
  align-items: center;
  transform: rotate(90deg);
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.page-about .path-connector svg {
  display: block;
  width: 60px;
  height: 20px;
}

/* ---- 为什么选择乐竞 ---- */
.page-about .why-section {
  padding: 3.5rem 0;
  background: var(--color-blue, #1B3A5E);
  position: relative;
  overflow: hidden;
}

.page-about .why-section::after {
  content: '';
  position: absolute;
  top: -60%;
  right: -20%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(212,175,55,0.06);
  pointer-events: none;
}

.page-about .why-title {
  text-align: center;
  color: #FFFFFF;
  margin-bottom: 2.5rem;
  position: relative;
  z-index: 1;
}

.page-about .why-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: relative;
  z-index: 1;
}

.page-about .why-card {
  background: rgba(255,255,255,0.07);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border-radius: 1.25rem;
  padding: 2rem 1.75rem;
  text-align: center;
  border: 1px solid rgba(212,175,55,0.20);
  transition: transform 0.3s ease, background 0.3s ease, border-color 0.3s ease;
}

.page-about .why-card:hover,
.page-about .why-card:focus-within {
  transform: translateY(-4px);
  background: rgba(255,255,255,0.12);
  border-color: var(--color-gold, #D4AF37);
}

.page-about .why-card-icon {
  margin-bottom: 1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.page-about .why-card-icon svg {
  width: 48px;
  height: 48px;
  display: block;
}

.page-about .why-card-title {
  font-family: var(--font-heading, 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif);
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--color-gold, #D4AF37);
  margin: 0 0 0.5rem;
  line-height: 1.2;
}

.page-about .why-card-desc {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.88);
  font-weight: 300;
  margin: 0;
  line-height: 1.7;
}

.page-about .trust-badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  margin-top: 3rem;
  padding: 1.5rem;
  background: rgba(255,255,255,0.06);
  border-radius: 1rem;
  border: 1px solid rgba(212,175,55,0.15);
  position: relative;
  z-index: 1;
}

.page-about .trust-img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  border-radius: 50%;
  background: rgba(255,255,255,0.10);
  padding: 0.25rem;
}

.page-about .trust-text {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-gold, #D4AF37);
  margin: 0;
  letter-spacing: 0.03em;
  text-align: center;
}

/* ---- 联系我们桥梁 ---- */
.page-about .contact-bridge {
  padding: 3.5rem 0;
  background: linear-gradient(135deg, var(--color-bg, #F5F0EB) 0%, #ebe3d9 100%);
  position: relative;
}

.page-about .contact-bridge-inner {
  text-align: center;
  max-width: 640px;
}

.page-about .contact-bridge-title {
  color: var(--color-blue, #1B3A5E);
  margin-bottom: 1rem;
}

.page-about .contact-bridge-desc {
  font-size: 1.05rem;
  color: var(--color-muted, #666);
  font-weight: 300;
  margin: 0 auto 2rem;
  max-width: 520px;
  line-height: 1.7;
}

.page-about .contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--color-accent, #FF6B35);
  color: #FFFFFF;
  font-family: var(--font-heading, 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif);
  font-weight: 700;
  font-size: 1.1rem;
  padding: 0.9rem 2.5rem;
  border-radius: 60px;
  text-decoration: none;
  transition: background 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
  box-shadow: 0 6px 24px rgba(255,107,53,0.30);
}

.page-about .contact-btn:hover,
.page-about .contact-btn:focus-visible {
  background: #e85a2a;
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(255,107,53,0.40);
  outline: none;
}

.page-about .contact-btn:focus-visible {
  outline: 3px solid var(--color-gold, #D4AF37);
  outline-offset: 4px;
}

.page-about .btn-arrow {
  display: inline-block;
  transition: transform 0.2s ease;
  font-size: 1.2rem;
}

.page-about .contact-btn:hover .btn-arrow {
  transform: translateX(4px);
}

.page-about .contact-bridge-note {
  margin-top: 1.5rem;
  font-size: 0.875rem;
  color: var(--color-muted, #666);
  font-weight: 300;
  letter-spacing: 0.02em;
}

/* ---- 共享工具类适配 ---- */
.page-about .content-container {
  width: 100%;
  max-width: var(--container-max, 1200px);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
  box-sizing: border-box;
}

.page-about .section-title {
  font-family: var(--font-heading, 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif);
  font-weight: 800;
  font-size: 2rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
}

/* ---- 桌面端媒体查询 ---- */
@media (min-width: 768px) {
  .page-about .hero-mission {
    min-height: 560px;
    margin-bottom: 4rem;
  }

  .page-about .hero-text {
    padding: 4rem 2rem;
  }

  .page-about .hero-title {
    font-size: 3.75rem;
  }

  .page-about .hero-sub {
    font-size: 1.5rem;
  }

  .page-about .hero-desc {
    font-size: 1.1rem;
  }

  .page-about .path-tree {
    flex-direction: row;
    justify-content: center;
    align-items: flex-start;
    gap: 0;
  }

  .page-about .path-node {
    max-width: 320px;
    padding: 2.25rem 1.5rem;
    flex: 1;
  }

  .page-about .path-connector {
    transform: rotate(0deg);
    width: auto;
    height: auto;
    padding: 0 0.25rem;
    flex-shrink: 0;
    align-self: center;
    margin-top: -2rem;
  }

  .page-about .path-connector svg {
    width: 80px;
    height: 24px;
  }

  .page-about .node-icon-wrap {
    width: 110px;
    height: 110px;
  }

  .page-about .why-grid {
    flex-direction: row;
    gap: 1.75rem;
  }

  .page-about .why-card {
    flex: 1;
    padding: 2.25rem 1.75rem;
  }

  .page-about .trust-badge {
    flex-direction: row;
    justify-content: center;
    gap: 1.5rem;
    padding: 1.75rem 2rem;
  }

  .page-about .trust-img {
    width: 90px;
    height: 90px;
  }

  .page-about .trust-text {
    font-size: 1.15rem;
  }

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

  .page-about .contact-bridge {
    padding: 4.5rem 0;
  }

  .page-about .contact-bridge-title {
    font-size: 2.5rem;
  }
}

@media (min-width: 1024px) {
  .page-about .hero-mission {
    min-height: 620px;
  }

  .page-about .hero-title {
    font-size: 4.5rem;
  }

  .page-about .hero-text {
    padding: 5rem 2rem;
  }

  .page-about .path-node {
    max-width: 350px;
    padding: 2.5rem 2rem;
  }

  .page-about .node-icon-wrap {
    width: 130px;
    height: 130px;
  }

  .page-about .path-connector {
    padding: 0 0.75rem;
  }

  .page-about .path-connector svg {
    width: 100px;
    height: 28px;
  }

  .page-about .why-grid {
    gap: 2.25rem;
  }

  .page-about .why-card {
    padding: 2.75rem 2.25rem;
  }
}

/* ---- 缩减动效 ---- */
@media (prefers-reduced-motion: reduce) {
  .page-about .path-node,
  .page-about .why-card,
  .page-about .contact-btn,
  .page-about .btn-arrow,
  .page-about .node-detail {
    transition: none !important;
    transform: none !important;
  }

  .page-about .node-detail {
    max-height: none !important;
    padding-top: 0.5rem !important;
    border-top: 1px solid var(--color-border, #D9D9D9);
  }
}

/* ---- 焦点样式 ---- */
.page-about a:focus-visible,
.page-about button:focus-visible {
  outline: 3px solid var(--color-accent, #FF6B35);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---- 高对比度适配 ---- */
@media (prefers-contrast: high) {
  .page-about .hero-overlay {
    background: rgba(27,58,94,0.92);
  }

  .page-about .why-card {
    border-width: 2px;
  }

  .page-about .contact-btn {
    border: 2px solid #FFFFFF;
  }
}