/* ===== page-about 企业概况页面专属样式 ===== */
.page-about {
  --page-about-bg: var(--color-bg, #F5F5F0);
  --page-about-surface: var(--color-surface, #FFFFFF);
  --page-about-text: var(--color-text, #2C2C2C);
  --page-about-accent: var(--color-accent, #FF6B35);
  --page-about-primary: var(--color-primary, #1A5CFF);
  --page-about-highlight: var(--color-highlight, #00D4AA);
  --page-about-border: var(--color-border, #D1D1D1);
  --page-about-radius: var(--radius-md, 14px);
  --page-about-radius-lg: var(--radius-lg, 24px);
  --page-about-shadow: var(--shadow-card, 0 2px 12px rgba(26,92,255,0.08));
  --page-about-shadow-hover: var(--shadow-card-hover, 0 8px 28px rgba(26,92,255,0.16));
  --page-about-number-size: 4rem;
  --page-about-data-number: 3.25rem;

  background: var(--page-about-bg);
  font-family: var(--font-body, 'Inter', 'Noto Sans SC', system-ui, sans-serif);
  color: var(--page-about-text);
  padding: var(--spacing-lg, 2.5rem) 0;
  line-height: 1.6;
}

.page-about__wrapper {
  max-width: var(--container-max, 1200px);
  margin: 0 auto;
  padding: 0 var(--spacing-md, 1.5rem);
}

/* 面包屑 */
.page-about__breadcrumb {
  margin-bottom: var(--spacing-lg, 2.5rem);
  font-size: 0.875rem;
  color: var(--color-neutral-light, #6B6B6B);
}
.page-about__breadcrumb a {
  color: var(--page-about-primary);
  text-decoration: none;
}
.page-about__breadcrumb a:hover {
  text-decoration: underline;
}

/* 左右分屏 */
.page-about__split {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl, 4rem);
}

/* 左侧叙事区 */
.page-about__narrative {
  flex: 1 1 100%;
}

/* 编号章节 */
.page-about__chapter {
  margin-bottom: var(--spacing-xl, 4rem);
  position: relative;
  padding-left: 0;
}
.page-about__chapter:last-child {
  margin-bottom: 0;
}

.page-about__chapter .chapter__number {
  font-family: var(--font-heading, 'Inter', 'PingFang SC', sans-serif);
  font-size: var(--page-about-number-size);
  font-weight: 800;
  font-style: italic;
  line-height: 1;
  color: var(--page-about-primary);
  opacity: 0.85;
  margin-bottom: var(--spacing-xs, 0.5rem);
  display: block;
  user-select: none;
}

.page-about__chapter .chapter__title {
  font-family: var(--font-heading, 'Inter', 'PingFang SC', sans-serif);
  font-size: 2rem;
  font-weight: 700;
  font-style: italic;
  color: var(--page-about-text);
  margin: 0 0 var(--spacing-md, 1.5rem) 0;
  line-height: 1.2;
}

.page-about__chapter .chapter__body {
  font-size: 1rem;
  color: var(--color-neutral, #4A4A4A);
}

/* 品牌档案区 */
.page-about__lead {
  font-size: 1.125rem;
  font-weight: 500;
  margin-bottom: var(--spacing-md, 1.5rem);
  color: var(--page-about-text);
  line-height: 1.7;
}

.page-about__brand-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--spacing-sm, 1rem);
  background: var(--page-about-surface);
  border-radius: var(--page-about-radius);
  padding: var(--spacing-md, 1.5rem);
  box-shadow: var(--page-about-shadow);
}

.page-about__brand-icon {
  flex-shrink: 0;
}

.page-about__brand-silhouette {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm, 8px);
  object-fit: contain;
}

.page-about__brand-info {
  flex: 1;
}

.page-about__brand-desc {
  margin: 0;
  color: var(--color-neutral, #4A4A4A);
  line-height: 1.7;
}

/* 核心能力 */
.page-about__capabilities {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md, 1.5rem);
}

.page-about__capability-item {
  background: var(--page-about-surface);
  border-radius: var(--page-about-radius);
  padding: var(--spacing-md, 1.5rem);
  box-shadow: var(--page-about-shadow);
  transition: box-shadow var(--transition, 0.3s cubic-bezier(0.4,0,0.2,1)), transform var(--transition, 0.3s cubic-bezier(0.4,0,0.2,1));
}
.page-about__capability-item:hover,
.page-about__capability-item:focus-within {
  box-shadow: var(--page-about-shadow-hover);
  transform: translateY(-3px);
}

.page-about__capability-icon {
  font-size: 2rem;
  margin-bottom: var(--spacing-xs, 0.5rem);
  display: block;
}

.page-about__capability-heading {
  font-family: var(--font-heading, 'Inter', 'PingFang SC', sans-serif);
  font-size: 1.35rem;
  font-weight: 700;
  font-style: italic;
  margin: 0 0 var(--spacing-xs, 0.5rem) 0;
  color: var(--page-about-text);
}

.page-about__capability-desc {
  margin: 0 0 var(--spacing-sm, 1rem) 0;
  font-size: 0.95rem;
  color: var(--color-neutral, #4A4A4A);
}

.page-about__capability-media {
  margin-top: var(--spacing-xs, 0.5rem);
}

.page-about__capability-img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-sm, 8px);
  object-fit: cover;
}

.page-about__capability-cta {
  margin-top: var(--spacing-md, 1.5rem);
  font-size: 0.95rem;
  color: var(--color-neutral, #4A4A4A);
}

.page-about__inline-link {
  color: var(--page-about-primary);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition, 0.3s cubic-bezier(0.4,0,0.2,1));
}
.page-about__inline-link:hover {
  border-color: currentColor;
}

/* 联系与位置 */
.page-about__contact-grid {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm, 1rem);
  margin-bottom: var(--spacing-sm, 1rem);
}

.page-about__contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: var(--spacing-sm, 1rem);
  background: var(--page-about-surface);
  border-radius: var(--page-about-radius);
  box-shadow: var(--page-about-shadow);
}

.page-about__contact-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-neutral-light, #6B6B6B);
}

.page-about__contact-value {
  font-size: 1rem;
  color: var(--page-about-text);
  word-break: break-word;
}

.page-about__contact-value a {
  color: var(--page-about-primary);
  text-decoration: none;
}
.page-about__contact-value a:hover {
  text-decoration: underline;
}

.page-about__contact-note {
  font-size: 0.85rem;
  color: var(--color-neutral-light, #6B6B6B);
  font-style: italic;
  margin: 0 0 var(--spacing-xs, 0.5rem) 0;
}

.page-about__contact-action {
  font-size: 0.95rem;
  color: var(--color-neutral, #4A4A4A);
}

/* 右侧数据墙 */
.page-about__data-wall {
  flex: 1 1 100%;
}

.page-about__data-wall-inner {
  background: var(--gradient-dark, linear-gradient(135deg, #1B1B2F, #2A2A45));
  border-radius: var(--page-about-radius-lg);
  padding: var(--spacing-lg, 2.5rem) var(--spacing-md, 1.5rem);
  color: var(--color-text-inverse, #F0F0F0);
  box-shadow: var(--page-about-shadow-hover);
}

.page-about__data-wall-title {
  font-family: var(--font-heading, 'Inter', 'PingFang SC', sans-serif);
  font-size: 1.5rem;
  font-weight: 700;
  font-style: italic;
  margin: 0 0 var(--spacing-lg, 2.5rem) 0;
  text-align: center;
  color: #fff;
  letter-spacing: 0.02em;
}

.page-about__data-wall-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md, 1.5rem);
}

.page-about__data-card {
  text-align: center;
  padding: var(--spacing-md, 1.5rem) var(--spacing-sm, 1rem);
  background: rgba(255,255,255,0.08);
  border-radius: var(--page-about-radius);
  border: 1px solid rgba(255,255,255,0.12);
  cursor: default;
  transition: background var(--transition, 0.3s cubic-bezier(0.4,0,0.2,1)), transform var(--transition, 0.3s cubic-bezier(0.4,0,0.2,1));
  outline-offset: 2px;
}

.page-about__data-card:hover,
.page-about__data-card:focus-visible {
  background: rgba(255,255,255,0.15);
  transform: scale(1.03);
}

.page-about__data-card:focus-visible {
  outline: 2px solid var(--page-about-accent);
}

.page-about__data-number {
  display: block;
  font-family: var(--font-data, 'JetBrains Mono', 'Fira Code', monospace);
  font-size: var(--page-about-data-number);
  font-weight: 700;
  line-height: 1.2;
  color: var(--page-about-accent);
  margin-bottom: var(--spacing-xs, 0.5rem);
  min-height: 1.2em;
}

.page-about__data-label {
  display: block;
  font-family: var(--font-heading, 'Inter', 'PingFang SC', sans-serif);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.4;
  color: #fff;
}

.page-about__data-tip {
  display: block;
  margin-top: var(--spacing-xs, 0.5rem);
  font-size: 0.75rem;
  color: rgba(255,255,255,0.6);
  transition: opacity var(--transition, 0.3s cubic-bezier(0.4,0,0.2,1));
  opacity: 0;
}
.page-about__data-card:hover .page-about__data-tip,
.page-about__data-card:focus-visible .page-about__data-tip {
  opacity: 1;
}

/* 分隔线 */
.page-about__section-divider {
  border: 0;
  height: 2px;
  background: var(--gradient-brand, linear-gradient(135deg, #1A5CFF, #FF6B35));
  border-radius: 2px;
  margin: var(--spacing-lg, 2.5rem) 0;
}

/* 桌面端响应式 */
@media (min-width: 992px) {
  .page-about {
    padding: var(--spacing-xl, 4rem) 0;
  }

  .page-about__split {
    flex-direction: row;
    gap: var(--spacing-xl, 4rem);
  }

  .page-about__narrative {
    flex: 0 0 55%;
    max-width: 55%;
  }

  .page-about__data-wall {
    flex: 0 0 38%;
    max-width: 38%;
    position: sticky;
    top: calc(var(--header-height, 72px) + var(--spacing-lg, 2.5rem));
    align-self: flex-start;
  }

  .page-about__data-wall-inner {
    padding: var(--spacing-lg, 2.5rem) var(--spacing-md, 1.5rem);
  }

  .page-about__data-wall-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md, 1.5rem);
  }

  .page-about__data-card {
    padding: var(--spacing-md, 1.5rem) var(--spacing-sm, 1rem);
  }

  .page-about__chapter .chapter__number {
    font-size: 4.5rem;
  }

  .page-about__chapter .chapter__title {
    font-size: 2.25rem;
  }

  .page-about__brand-card {
    flex-direction: row;
  }

  .page-about__capabilities {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .page-about__capability-item {
    flex: 1 1 calc(50% - 0.75rem);
    min-width: 240px;
  }

  .page-about__contact-grid {
    flex-direction: row;
    flex-wrap: wrap;
  }

  .page-about__contact-item {
    flex: 1 1 calc(33.333% - 1rem);
  }
}

/* 窄屏额外适配 */
@media (max-width: 480px) {
  .page-about__data-number {
    font-size: 2.5rem;
  }

  .page-about__chapter .chapter__number {
    font-size: 3rem;
  }

  .page-about__chapter .chapter__title {
    font-size: 1.5rem;
  }
}