/* ===== page-about 专属样式 ===== */
.page-about {
  --about-gold-start: #C9A96E;
  --about-gold-end: #B8944F;
  --about-line-color: #2B1D14;
  --about-dot-size: 14px;
  --about-timeline-bar: 2px;
  --about-card-border: 1px solid #E8E4DF;
  --about-card-shadow: 0 2px 8px rgba(43,29,20,0.06);
  --about-card-shadow-hover: 0 6px 20px rgba(43,29,20,0.10);
  --about-hero-min-height: 420px;
  --about-content-max: 720px;
}

/* ---- 跳过链接（无js渐进） ---- */
.page-about .skip-link:focus {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 999;
  padding: 0.5rem 1rem;
  background: var(--color-dark-brown, #2B1D14);
  color: var(--color-cream, #F5F0EB);
  font-family: var(--font-body, sans-serif);
  font-size: 0.875rem;
  text-decoration: none;
  outline: 2px solid var(--color-red-orange, #D94F30);
}

/* ---- 面包屑 ---- */
.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 0.5rem;
  font-family: var(--font-body, sans-serif);
  font-size: 0.8125rem;
  color: var(--color-brown-light, #5A4A3A);
  margin-bottom: 1.25rem;
}
.page-about .breadcrumb a {
  color: var(--color-deep-blue, #1A365D);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease;
}
.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  border-bottom-color: var(--color-red-orange, #D94F30);
}
.page-about .breadcrumb-sep {
  color: var(--color-light-gray, #E8E4DF);
  margin: 0 0.125rem;
}
.page-about .breadcrumb-current {
  color: var(--color-dark-brown, #2B1D14);
  font-weight: 500;
}

/* ---- Hero 区域 ---- */
.page-about .about-hero {
  position: relative;
  min-height: var(--about-hero-min-height);
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: var(--color-dark-brown, #2B1D14);
  margin-bottom: 0;
}
.page-about .about-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.page-about .about-hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  display: block;
}
.page-about .about-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(43,29,20,0.78) 0%,
    rgba(43,29,20,0.42) 60%,
    rgba(43,29,20,0.20) 100%
  );
  z-index: 1;
}
.page-about .about-hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--max-content, 1200px);
  margin: 0 auto;
  padding: 2rem 1.5rem 2.5rem;
}
.page-about .about-hero-title {
  font-family: var(--font-heading, Georgia, 'Times New Roman', serif);
  font-size: clamp(1.75rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--color-cream, #F5F0EB);
  background: linear-gradient(135deg, var(--about-gold-start), var(--about-gold-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin: 0 0 0.75rem;
  max-width: 640px;
}
.page-about .about-hero-subtitle {
  font-family: var(--font-body, sans-serif);
  font-size: clamp(0.9375rem, 1.6vw, 1.125rem);
  font-weight: 400;
  line-height: 1.6;
  color: rgba(245,240,235,0.85);
  max-width: 540px;
  margin: 0;
}

/* ---- 品牌理念 ---- */
.page-about .about-mission {
  background: var(--color-cream, #F5F0EB);
  padding: 3rem 1.5rem 2.5rem;
}
.page-about .about-mission-inner {
  max-width: var(--about-content-max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 1.5rem 2rem;
}
.page-about .about-section-label {
  font-family: var(--font-heading, Georgia, 'Times New Roman', serif);
  font-size: clamp(1.125rem, 2vw, 1.375rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-dark-brown, #2B1D14);
  margin: 0 0 0.5rem;
  min-width: 120px;
  position: relative;
  padding-left: 1rem;
  border-left: 3px solid var(--color-red-orange, #D94F30);
}
.page-about .about-mission-body {
  flex: 1;
  min-width: 240px;
}
.page-about .about-mission-body p {
  font-family: var(--font-body, sans-serif);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-dark-brown, #2B1D14);
  margin: 0 0 1rem;
}
.page-about .about-mission-body p:last-child {
  margin-bottom: 0;
}
.page-about .about-mission-stat {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
  flex-shrink: 0;
}
.page-about .about-stat-number {
  font-family: var(--font-heading, Georgia, 'Times New Roman', serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-red-orange, #D94F30);
  line-height: 1;
  letter-spacing: -0.03em;
}
.page-about .about-stat-label {
  font-family: var(--font-body, sans-serif);
  font-size: 0.8125rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-dark-brown, #2B1D14);
  border-bottom: 1px solid var(--color-gold, #C9A96E);
  padding-bottom: 2px;
}

/* ---- 时间线 ---- */
.page-about .about-timeline {
  background: var(--color-white, #FFFFFF);
  padding: 3rem 1.5rem 2.5rem;
}
.page-about .about-timeline-inner {
  max-width: var(--about-content-max);
  margin: 0 auto;
}
.page-about .about-timeline-notes {
  font-family: var(--font-body, sans-serif);
  font-size: 0.875rem;
  color: var(--color-brown-light, #5A4A3A);
  margin: -0.25rem 0 2rem;
  line-height: 1.5;
}
.page-about .timeline-list {
  list-style: none;
  padding: 0;
  margin: 0;
  position: relative;
}
.page-about .timeline-list::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: var(--about-timeline-bar);
  background: var(--about-line-color);
  border-radius: 1px;
  opacity: 0.15;
}
.page-about .timeline-item {
  display: flex;
  gap: 1.25rem;
  padding-bottom: 2rem;
  position: relative;
}
.page-about .timeline-item:last-child {
  padding-bottom: 0;
}
.page-about .timeline-marker {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex-shrink: 0;
  width: 48px;
  position: relative;
  z-index: 1;
}
.page-about .timeline-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  display: block;
  background: var(--color-light-gray, #E8E4DF);
  border: 2px solid var(--color-cream, #F5F0EB);
  box-shadow: 0 0 0 2px var(--color-gold, #C9A96E);
}
.page-about .timeline-dot {
  display: block;
  width: var(--about-dot-size);
  height: var(--about-dot-size);
  border-radius: 50%;
  background: var(--color-red-orange, #D94F30);
  margin-top: 0.5rem;
  flex-shrink: 0;
  border: 2px solid var(--color-cream, #F5F0EB);
  box-shadow: 0 0 0 1px var(--color-red-orange, #D94F30);
}
.page-about .timeline-content {
  flex: 1;
  min-width: 0;
  padding-top: 0.25rem;
}
.page-about .timeline-heading {
  font-family: var(--font-heading, Georgia, 'Times New Roman', serif);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-dark-brown, #2B1D14);
  margin: 0 0 0.35rem;
  letter-spacing: -0.01em;
}
.page-about .timeline-desc {
  font-family: var(--font-body, sans-serif);
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-brown-light, #5A4A3A);
  margin: 0;
}

/* ---- 用户价值卡片 ---- */
.page-about .about-value {
  background: var(--color-light-gray, #E8E4DF);
  padding: 3rem 1.5rem 2.5rem;
}
.page-about .about-value-inner {
  max-width: var(--max-content, 1200px);
  margin: 0 auto;
}
.page-about .about-value-inner .about-section-label {
  border-left-color: var(--color-gold, #C9A96E);
  margin-bottom: 1.5rem;
}
.page-about .about-value-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
.page-about .value-card {
  background: var(--color-white, #FFFFFF);
  border: var(--about-card-border);
  border-radius: var(--radius-md, 8px);
  padding: 1.25rem 1.25rem 1.5rem;
  box-shadow: var(--about-card-shadow);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
  display: flex;
  flex-direction: column;
  cursor: default;
}
.page-about .value-card:hover {
  box-shadow: var(--about-card-shadow-hover);
  transform: translateY(-2px);
}
.page-about .value-card-number {
  font-family: var(--font-heading, Georgia, 'Times New Roman', serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-red-orange, #D94F30);
  line-height: 1;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}
.page-about .value-card-title {
  font-family: var(--font-heading, Georgia, 'Times New Roman', serif);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--color-dark-brown, #2B1D14);
  margin: 0 0 0.4rem;
  letter-spacing: -0.01em;
}
.page-about .value-card-text {
  font-family: var(--font-body, sans-serif);
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-brown-light, #5A4A3A);
  margin: 0;
}

/* ---- 信任声明 ---- */
.page-about .about-trust {
  background: var(--color-dark-brown, #2B1D14);
  padding: 3rem 1.5rem 2.5rem;
  text-align: center;
}
.page-about .about-trust-inner {
  max-width: 600px;
  margin: 0 auto;
}
.page-about .about-trust-logo {
  width: 120px;
  height: auto;
  margin: 0 auto 1.25rem;
  display: block;
  opacity: 0.9;
}
.page-about .about-trust-text {
  font-family: var(--font-body, sans-serif);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: rgba(245,240,235,0.85);
  margin: 0 0 1.5rem;
}
.page-about .about-trust-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
}
.page-about .about-trust-links .btn {
  text-decoration: none;
  font-family: var(--font-body, sans-serif);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-sm, 4px);
  transition: background 0.25s ease, color 0.25s ease, border-color 0.25s ease;
  display: inline-block;
  line-height: 1.4;
}
.page-about .about-trust-links .btn-primary {
  background: var(--color-red-orange, #D94F30);
  color: var(--color-white, #FFFFFF);
  border: 1px solid var(--color-red-orange, #D94F30);
}
.page-about .about-trust-links .btn-primary:hover,
.page-about .about-trust-links .btn-primary:focus-visible {
  background: #c04428;
  border-color: #c04428;
}
.page-about .about-trust-links .btn-secondary {
  background: transparent;
  color: var(--color-gold, #C9A96E);
  border: 1px solid var(--color-gold, #C9A96E);
}
.page-about .about-trust-links .btn-secondary:hover,
.page-about .about-trust-links .btn-secondary:focus-visible {
  background: rgba(201,169,110,0.12);
  color: var(--color-cream, #F5F0EB);
  border-color: var(--color-cream, #F5F0EB);
}

/* ---- 辅助类 ---- */
.page-about .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ===== 移动端优先 + 响应式增强 ===== */
@media (max-width: 639px) {
  .page-about .about-hero {
    min-height: 320px;
  }
  .page-about .about-hero-content {
    padding: 1.5rem 1rem 2rem;
  }
  .page-about .about-mission,
  .page-about .about-timeline,
  .page-about .about-value,
  .page-about .about-trust {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  .page-about .about-mission-inner {
    flex-direction: column;
    gap: 1rem;
  }
  .page-about .about-mission-stat {
    align-self: flex-start;
  }
  .page-about .timeline-list::before {
    left: 20px;
  }
  .page-about .timeline-marker {
    width: 40px;
  }
  .page-about .timeline-icon {
    width: 40px;
    height: 40px;
  }
  .page-about .timeline-dot {
    width: 12px;
    height: 12px;
  }
  .page-about .about-trust-logo {
    width: 100px;
  }
}

@media (min-width: 640px) {
  .page-about .about-value-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }
  .page-about .value-card {
    padding: 1.5rem;
  }
  .page-about .about-hero-content {
    padding: 2.5rem 2rem 3rem;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero {
    min-height: 480px;
  }
  .page-about .about-hero-content {
    padding: 3rem 2.5rem 3.5rem;
  }
  .page-about .about-mission,
  .page-about .about-timeline,
  .page-about .about-value,
  .page-about .about-trust {
    padding-left: 2.5rem;
    padding-right: 2.5rem;
  }
  .page-about .about-value-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
  }
}

/* 桌面大屏内容宽度精细调整 */
@media (min-width: 1280px) {
  .page-about .about-hero-content {
    padding-left: calc(2.5rem + 0px);
    padding-right: calc(2.5rem + 0px);
  }
}

.page-about {
  --color-brown-light: var(--color-light-gray);
}