/* ===== page-about 专属样式 ===== */
.page-about {
  --story-bg: var(--color-primary, #0B3D91);
  --path-bg: var(--color-dark, #0A1F3D);
  --promise-bg: var(--color-primary, #0B3D91);
  --accent-orange: var(--color-accent, #FF6B35);
  --accent-neon: var(--color-neon, #39FF14);
  --accent-gold: var(--color-gold, #FFD700);
  --text-white: var(--color-white, #FFFFFF);
  --text-muted: var(--color-muted, #E0E6ED);
  --border-subtle: var(--border-light, 1px solid rgba(224, 230, 237, 0.2));
  --card-radius: var(--radius-md, 8px);
  --content-pad: var(--gap-lg, 48px);
  --section-gap: var(--gap-xl, 80px);

  display: block;
  width: 100%;
  background-color: var(--story-bg);
  color: var(--text-white);
  font-family: var(--font-body, 'Inter', system-ui, sans-serif);
  line-height: 1.6;
}

/* 面包屑 */
.page-about .breadcrumb {
  max-width: var(--content-max, 1200px);
  margin: 0 auto;
  padding: var(--gap-md, 24px) var(--gap-sm, 16px) 0;
  font-size: 0.875rem;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--gap-xs, 8px);
}
.page-about .breadcrumb__link {
  color: var(--accent-orange);
  text-decoration: none;
  transition: opacity var(--transition, 0.25s ease);
}
.page-about .breadcrumb__link:hover,
.page-about .breadcrumb__link:focus-visible {
  opacity: 0.75;
  outline: 2px solid var(--accent-neon);
  outline-offset: 2px;
}
.page-about .breadcrumb__sep {
  color: var(--text-muted);
  opacity: 0.5;
}
.page-about .breadcrumb__current {
  color: var(--text-white);
  font-weight: 600;
}

/* 品牌故事区 */
.page-about .brand-story {
  padding: var(--gap-xl, 80px) 0 var(--gap-lg, 48px);
}
.page-about .brand-story__inner {
  display: flex;
  flex-direction: column;
  gap: var(--gap-lg, 48px);
  align-items: center;
}
.page-about .brand-story__text {
  flex: 0 1 auto;
  max-width: 640px;
}
.page-about .brand-story__title {
  font-family: var(--font-heading, 'Poppins', system-ui, sans-serif);
  font-weight: 800;
  font-size: 2.5rem;
  line-height: 1.2;
  margin: 0 0 var(--gap-md, 24px);
  color: var(--text-white);
  letter-spacing: -0.02em;
}
.page-about .brand-story__mission {
  font-size: 1.125rem;
  margin: 0 0 var(--gap-sm, 16px);
  color: var(--text-muted);
}
.page-about .brand-story__detail {
  font-size: 1rem;
  margin: 0 0 var(--gap-md, 24px);
  color: var(--text-muted);
  opacity: 0.85;
}
.page-about .brand-story__cta {
  display: inline-block;
}
.page-about .brand-story__visual {
  flex: 0 1 auto;
  width: 100%;
  max-width: 600px;
}
.page-about .brand-story__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--card-radius);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.35);
}

/* 服务路径区 */
.page-about .service-path {
  background-color: var(--path-bg);
  padding: var(--gap-xl, 80px) 0;
  position: relative;
  overflow: hidden;
}
/* 背景数据线装饰（纯CSS） */
.page-about .service-path::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 40px,
      rgba(57, 255, 20, 0.04) 40px,
      rgba(57, 255, 20, 0.04) 41px
    ),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 40px,
      rgba(57, 255, 20, 0.03) 40px,
      rgba(57, 255, 20, 0.03) 41px
    );
  pointer-events: none;
  animation: dataLineScroll 24s linear infinite;
  z-index: 0;
}
@keyframes dataLineScroll {
  0% { transform: translate(0, 0); }
  100% { transform: translate(40px, 40px); }
}
.page-about .service-path__inner {
  position: relative;
  z-index: 1;
}
.page-about .service-path__title {
  font-family: var(--font-heading, 'Poppins', system-ui, sans-serif);
  font-weight: 800;
  font-size: 2rem;
  line-height: 1.25;
  margin: 0 0 var(--gap-sm, 16px);
  color: var(--text-white);
  text-align: center;
}
.page-about .service-path__intro {
  text-align: center;
  max-width: 680px;
  margin: 0 auto var(--gap-lg, 48px);
  color: var(--text-muted);
  font-size: 1.05rem;
}
.page-about .service-path__steps {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--gap-md, 24px);
  margin-bottom: var(--gap-lg, 48px);
}
.page-about .service-path__step {
  background: rgba(255, 255, 255, 0.06);
  border: var(--border-subtle);
  border-radius: var(--card-radius);
  padding: var(--gap-md, 24px);
  width: 100%;
  max-width: 380px;
  text-align: center;
  transition: transform var(--transition, 0.25s ease), box-shadow var(--transition, 0.25s ease), border-color var(--transition, 0.25s ease);
  cursor: default;
}
.page-about .service-path__step:hover,
.page-about .service-path__step:focus-within {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(255, 107, 53, 0.18);
  border-color: var(--accent-orange);
}
.page-about .service-path__step[data-step="1"]:hover,
.page-about .service-path__step[data-step="1"]:focus-within {
  border-color: var(--accent-neon);
  box-shadow: 0 12px 32px rgba(57, 255, 20, 0.12);
}
.page-about .service-path__step[data-step="2"]:hover,
.page-about .service-path__step[data-step="2"]:focus-within {
  border-color: var(--accent-gold);
  box-shadow: 0 12px 32px rgba(255, 215, 0, 0.15);
}
.page-about .step-number {
  display: inline-block;
  font-family: var(--font-data, 'Playfair Display', Georgia, serif);
  font-size: 2rem;
  font-style: italic;
  line-height: 1;
  color: var(--accent-orange);
  margin-bottom: var(--gap-xs, 8px);
  opacity: 0.8;
}
.page-about .service-path__step[data-step="1"] .step-number {
  color: var(--accent-neon);
}
.page-about .service-path__step[data-step="2"] .step-number {
  color: var(--accent-gold);
}
.page-about .step-title {
  font-family: var(--font-heading, 'Poppins', system-ui, sans-serif);
  font-weight: 700;
  font-size: 1.25rem;
  margin: 0 0 var(--gap-xs, 8px);
  color: var(--text-white);
}
.page-about .step-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin: 0;
  opacity: 0.85;
  transition: opacity var(--transition, 0.25s ease);
}
.page-about .service-path__step:hover .step-desc,
.page-about .service-path__step:focus-within .step-desc {
  opacity: 1;
}
.page-about .service-path__connector {
  display: flex;
  align-items: center;
  gap: var(--gap-xs, 8px);
  flex-shrink: 0;
  padding: 0 var(--gap-xs, 8px);
}
.page-about .connector-line {
  display: block;
  width: 40px;
  height: 2px;
  background: var(--accent-orange);
  opacity: 0.4;
}
.page-about .connector-arrow {
  font-size: 1.5rem;
  color: var(--accent-orange);
  font-weight: 300;
  line-height: 1;
}
.page-about .service-path__diagram {
  margin-bottom: var(--gap-lg, 48px);
  text-align: center;
}
.page-about .service-path__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--card-radius);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}
.page-about .service-path__cta {
  display: inline-block;
  margin: 0 auto;
  text-align: center;
  width: fit-content;
}

/* 数据承诺区 */
.page-about .data-promise {
  background-color: var(--promise-bg);
  padding: var(--gap-xl, 80px) 0;
}
.page-about .data-promise__inner {
  display: flex;
  flex-direction: column;
  gap: var(--gap-lg, 48px);
  align-items: center;
}
.page-about .data-promise__text {
  flex: 0 1 auto;
  max-width: 640px;
}
.page-about .data-promise__title {
  font-family: var(--font-heading, 'Poppins', system-ui, sans-serif);
  font-weight: 800;
  font-size: 2rem;
  line-height: 1.25;
  margin: 0 0 var(--gap-md, 24px);
  color: var(--text-white);
  position: relative;
  display: inline-block;
}
.page-about .data-promise__title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 60px;
  height: 3px;
  background: var(--accent-gold);
  border-radius: 2px;
}
.page-about .data-promise__statement {
  font-size: 1.05rem;
  margin: 0 0 var(--gap-sm, 16px);
  color: var(--text-muted);
  line-height: 1.7;
}
.page-about .data-promise__contact {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin: 0;
  opacity: 0.85;
}
.page-about .data-promise__contact a {
  color: var(--accent-orange);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: opacity var(--transition, 0.25s ease);
}
.page-about .data-promise__contact a:hover,
.page-about .data-promise__contact a:focus-visible {
  opacity: 0.75;
  outline: 2px solid var(--accent-neon);
  outline-offset: 2px;
}
.page-about .data-promise__visual {
  flex: 0 1 auto;
  width: 100%;
  max-width: 400px;
}
.page-about .data-promise__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--card-radius);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.25);
  border: var(--border-subtle);
}

/* 容器复用 */
.page-about .container {
  max-width: var(--content-max, 1200px);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gap-sm, 16px);
  padding-right: var(--gap-sm, 16px);
}

/* 移动端优先 — 桌面端增强 */
@media (min-width: 768px) {
  .page-about .brand-story__inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
  .page-about .brand-story__text {
    flex: 0 1 45%;
    padding-right: var(--gap-lg, 48px);
  }
  .page-about .brand-story__visual {
    flex: 0 1 50%;
    max-width: 600px;
  }
  .page-about .brand-story__title {
    font-size: 3.2rem;
  }

  .page-about .service-path__steps {
    flex-direction: row;
    justify-content: center;
    gap: var(--gap-md, 24px);
  }
  .page-about .service-path__step {
    max-width: 320px;
  }
  .page-about .service-path__connector {
    flex-direction: column;
    padding: var(--gap-sm, 16px) 0;
  }
  .page-about .connector-line {
    width: 2px;
    height: 40px;
  }
  .page-about .connector-arrow {
    font-size: 1.75rem;
  }

  .page-about .data-promise__inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
  .page-about .data-promise__text {
    flex: 0 1 55%;
    padding-right: var(--gap-lg, 48px);
  }
  .page-about .data-promise__visual {
    flex: 0 1 35%;
    max-width: 400px;
  }
  .page-about .data-promise__title {
    font-size: 2.2rem;
  }
}

@media (min-width: 1024px) {
  .page-about .brand-story__title {
    font-size: 3.5rem;
  }
  .page-about .service-path__title {
    font-size: 2.4rem;
  }
  .page-about .service-path__step {
    max-width: 360px;
    padding: var(--gap-lg, 48px) var(--gap-md, 24px);
  }
  .page-about .step-number {
    font-size: 2.4rem;
  }
  .page-about .breadcrumb {
    padding-left: 0;
    padding-right: 0;
  }
}

/* 焦点样式（键盘可访问） */
.page-about *:focus-visible {
  outline: 2px solid var(--accent-neon, #39FF14);
  outline-offset: 3px;
}

/* 按钮主题复用（限定在 page-about 内避免污染） */
.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 2rem;
  font-family: var(--font-body, 'Inter', system-ui, sans-serif);
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.4;
  text-decoration: none;
  border-radius: var(--radius-sm, 4px);
  cursor: pointer;
  transition: background var(--transition, 0.25s ease), color var(--transition, 0.25s ease), border-color var(--transition, 0.25s ease), box-shadow var(--transition, 0.25s ease);
  border: 2px solid transparent;
}
.page-about .btn--accent {
  background: var(--accent-orange, #FF6B35);
  color: var(--color-white, #FFFFFF);
  border-color: var(--accent-orange, #FF6B35);
}
.page-about .btn--accent:hover,
.page-about .btn--accent:focus-visible {
  background: transparent;
  color: var(--accent-orange, #FF6B35);
  box-shadow: 0 0 0 2px var(--accent-orange, #FF6B35);
}
.page-about .btn--outline {
  background: transparent;
  color: var(--accent-orange, #FF6B35);
  border-color: var(--accent-orange, #FF6B35);
}
.page-about .btn--outline:hover,
.page-about .btn--outline:focus-visible {
  background: var(--accent-orange, #FF6B35);
  color: var(--color-white, #FFFFFF);
}

/* 图片响应式兜底 */
.page-about img {
  max-width: 100%;
  height: auto;
}