/* ===== 页面专属：page-about ===== */
.page-about {
  --about-gold: var(--color-gold, #FFD700);
  --about-primary: var(--color-primary, #0D1B2A);
  --about-secondary: var(--color-secondary, #1B3A5C);
  --about-accent: var(--color-accent, #4A90D9);
  --about-white: var(--color-white, #FFFFFF);
  --about-light-gray: var(--color-light-gray, #F5F5F5);
  --about-dark-gray: var(--color-dark-gray, #333333);
  --about-panel-radius: 16px;
  --about-transition: var(--transition-fast, 0.2s ease);

  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--about-primary);
  color: var(--about-dark-gray);
  font: var(--font-body, 300 1rem/1.6 sans-serif);
}

/* ===== 面包屑 ===== */
.page-about__breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 16px 0 8px;
  font-size: 0.875rem;
  letter-spacing: 0.02em;
}
.page-about__breadcrumb-link {
  color: var(--about-accent);
  text-decoration: none;
  transition: opacity var(--about-transition);
}
.page-about__breadcrumb-link:hover,
.page-about__breadcrumb-link:focus-visible {
  opacity: 0.75;
  outline: 2px solid var(--about-gold);
  outline-offset: 2px;
}
.page-about__breadcrumb-sep {
  color: var(--about-gold);
  font-weight: 700;
}
.page-about__breadcrumb-current {
  color: var(--about-white);
  font-weight: 600;
}

/* ===== 首屏 Hero ===== */
.page-about__hero {
  position: relative;
  overflow: hidden;
  padding: 40px 0 60px;
  background: var(--about-primary);
}
.page-about__hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 10% 20%, rgba(255,215,0,0.08) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 90% 80%, rgba(74,144,217,0.06) 0%, transparent 60%);
  pointer-events: none;
}
.page-about__hero-grid {
  display: flex;
  flex-direction: column;
  gap: 32px;
  position: relative;
  z-index: 1;
}
.page-about__hero-text {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.page-about__hero-title {
  font: var(--font-heading, 700 1.75rem/1.2 sans-serif);
  color: var(--about-white);
  margin: 0;
  letter-spacing: -0.01em;
}
.page-about__hero-subtitle {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--about-gold);
  letter-spacing: 0.04em;
  margin: 0;
}
.page-about__hero-desc {
  color: var(--about-white);
  opacity: 0.85;
  max-width: 580px;
  margin: 0;
  line-height: 1.7;
}
.page-about__hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}
.page-about__hero-tag {
  display: inline-block;
  padding: 6px 18px;
  border: 1px solid var(--about-gold);
  border-radius: 48px;
  color: var(--about-gold);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  background: rgba(255,215,0,0.08);
  transition: background var(--about-transition);
}
.page-about__hero-tag:hover {
  background: rgba(255,215,0,0.18);
}
.page-about__hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-about__hero-img {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--about-panel-radius);
  object-fit: cover;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  position: relative;
  z-index: 1;
}
.page-about__hero-glow {
  position: absolute;
  width: 60%;
  height: 60%;
  top: 20%;
  left: 20%;
  background: radial-gradient(circle, rgba(255,215,0,0.15) 0%, transparent 70%);
  filter: blur(40px);
  z-index: 0;
}

/* ===== 通用面板 ===== */
.page-about__section {
  padding: 60px 0;
  position: relative;
}
.page-about__section--story {
  background: var(--about-white);
}
.page-about__section--data {
  background: var(--about-primary);
}
.page-about__section--vision {
  background: var(--about-white);
}
.page-about__section--trust {
  background: var(--about-primary);
  padding: 40px 0;
}

.page-about__panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
  max-width: 820px;
  position: relative;
  padding: 32px 24px;
  border-radius: var(--about-panel-radius);
}
.page-about__section--story .page-about__panel {
  background: var(--about-light-gray);
  box-shadow: 0 4px 20px rgba(0,0,0,0.04);
}
.page-about__section--data .page-about__panel {
  background: var(--about-secondary);
  box-shadow: 0 4px 24px rgba(0,0,0,0.25);
}
.page-about__section--vision .page-about__panel {
  background: var(--about-light-gray);
  box-shadow: 0 4px 20px rgba(0,0,0,0.04);
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
  align-items: center;
}

.page-about__panel--left {
  margin-right: auto;
}
.page-about__panel--right {
  margin-left: auto;
}
.page-about__panel--center {
  margin: 0 auto;
}

.page-about__panel-number {
  font: var(--font-data, 300 1rem/1.5 monospace);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--about-gold);
  opacity: 0.3;
  line-height: 1;
  position: absolute;
  top: 12px;
  right: 16px;
  pointer-events: none;
}

.page-about__panel-title {
  font: var(--font-heading, 700 1.75rem/1.2 sans-serif);
  font-size: 1.65rem;
  color: var(--about-primary);
  margin: 0;
  letter-spacing: -0.01em;
}
.page-about__section--data .page-about__panel-title {
  color: var(--about-white);
}
.page-about__section--vision .page-about__panel-title {
  color: var(--about-primary);
}

.page-about__panel-text {
  margin: 0;
  line-height: 1.7;
  color: var(--about-dark-gray);
}
.page-about__section--data .page-about__panel-text {
  color: var(--about-white);
  opacity: 0.9;
}
.page-about__panel-text--lead {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--about-gold);
}
.page-about__panel-text--small {
  font-size: 0.95rem;
  opacity: 0.8;
}
.page-about__section--data .page-about__panel-text--small {
  opacity: 0.7;
}

/* ===== 品牌故事特性 ===== */
.page-about__story-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 8px;
}
.page-about__story-feature {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1rem;
  font-weight: 500;
  color: var(--about-primary);
}
.page-about__story-feature-icon {
  color: var(--about-gold);
  font-size: 0.9rem;
}

/* ===== 数据可视化区域 ===== */
.page-about__data-viz {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 8px 0 4px;
}
.page-about__data-img {
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}
.page-about__data-caption {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--about-gold);
  opacity: 0.85;
}
.page-about__data-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--about-gold);
  flex-shrink: 0;
}

/* ===== 数据指标卡片 ===== */
.page-about__data-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin: 8px 0;
}
.page-about__metric-card {
  flex: 1 1 120px;
  min-width: 100px;
  background: var(--about-primary);
  border: 1px solid rgba(255,215,0,0.25);
  border-radius: 12px;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  cursor: default;
  transition: border-color var(--about-transition), box-shadow var(--about-transition);
}
.page-about__metric-card:hover,
.page-about__metric-card:focus-visible {
  border-color: var(--about-gold);
  box-shadow: 0 0 0 2px rgba(255,215,0,0.15);
  outline: none;
}
.page-about__metric-value {
  font: var(--font-data, 300 1rem/1.5 monospace);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--about-gold);
  letter-spacing: 0.02em;
}
.page-about__metric-label {
  font-size: 0.8rem;
  color: var(--about-white);
  opacity: 0.7;
  text-align: center;
  letter-spacing: 0.03em;
}

/* ===== 愿景区域 ===== */
.page-about__vision-image-wrap {
  position: relative;
  width: 100%;
  border-radius: var(--about-panel-radius);
  overflow: hidden;
  margin: 12px 0;
  box-shadow: 0 6px 24px rgba(0,0,0,0.08);
}
.page-about__vision-img {
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
  border-radius: var(--about-panel-radius);
}
.page-about__vision-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,27,42,0.2) 0%, transparent 60%);
  pointer-events: none;
}
.page-about__vision-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  margin-top: 12px;
}
.page-about__vision-btn {
  text-decoration: none;
  padding: 12px 28px;
  font-weight: 600;
  letter-spacing: 0.03em;
}
.page-about__vision-btn.btn-outline {
  background: transparent;
  border: 2px solid var(--about-primary);
  color: var(--about-primary);
}
.page-about__vision-btn.btn-outline:hover,
.page-about__vision-btn.btn-outline:focus-visible {
  background: var(--about-primary);
  color: var(--about-white);
}

/* ===== 信任栏 ===== */
.page-about__trust-bar {
  text-align: center;
  padding: 16px 0;
}
.page-about__trust-heading {
  font: var(--font-heading, 700 1.75rem/1.2 sans-serif);
  font-size: 1.25rem;
  color: var(--about-gold);
  margin: 0 0 8px;
  letter-spacing: 0.02em;
}
.page-about__trust-text {
  color: var(--about-white);
  opacity: 0.8;
  max-width: 600px;
  margin: 0 auto;
  font-size: 0.95rem;
}
.page-about__trust-link {
  color: var(--about-gold);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity var(--about-transition);
}
.page-about__trust-link:hover,
.page-about__trust-link:focus-visible {
  opacity: 0.75;
  outline: 2px solid var(--about-gold);
  outline-offset: 2px;
}

/* ===== 响应式 ===== */
@media (min-width: 720px) {
  .page-about__hero {
    padding: 60px 0 80px;
  }
  .page-about__hero-grid {
    flex-direction: row;
    align-items: center;
    gap: 48px;
  }
  .page-about__hero-text {
    flex: 1 1 50%;
  }
  .page-about__hero-visual {
    flex: 1 1 50%;
  }
  .page-about__hero-title {
    font-size: 2.4rem;
  }
  .page-about__hero-subtitle {
    font-size: 1.35rem;
  }
  .page-about__section {
    padding: 80px 0;
  }
  .page-about__panel {
    padding: 40px 36px;
    gap: 24px;
  }
  .page-about__panel-title {
    font-size: 2rem;
  }
  .page-about__panel-number {
    font-size: 3rem;
    top: 16px;
    right: 24px;
  }
  .page-about__story-features {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 20px;
  }
  .page-about__data-metrics {
    flex-wrap: nowrap;
  }
  .page-about__metric-card {
    flex: 1;
  }
  .page-about__vision-actions {
    gap: 20px;
  }
  .page-about__trust-heading {
    font-size: 1.5rem;
  }
}

@media (min-width: 1024px) {
  .page-about__hero-title {
    font-size: 2.8rem;
  }
  .page-about__hero-subtitle {
    font-size: 1.5rem;
  }
  .page-about__panel {
    padding: 48px 44px;
  }
  .page-about__panel-title {
    font-size: 2.2rem;
  }
  .page-about__panel-number {
    font-size: 3.6rem;
  }
}

/* ===== 动态数据属性交互（渐进增强） ===== */
.page-about__metric-card[data-metric] {
  cursor: pointer;
}
.page-about__metric-card[data-metric]:focus-visible {
  outline: 2px solid var(--about-gold);
  outline-offset: 3px;
}

/* ===== 打印支持 ===== */
@media print {
  .page-about {
    background: #fff;
    color: #000;
  }
  .page-about__hero,
  .page-about__section {
    padding: 24px 0;
    background: #fff !important;
  }
  .page-about__panel {
    box-shadow: none !important;
    border: 1px solid #ccc;
    background: #fff !important;
  }
  .page-about__hero-title,
  .page-about__panel-title,
  .page-about__trust-heading {
    color: #000;
  }
  .page-about__panel-text {
    color: #000;
  }
  .page-about__hero-img,
  .page-about__data-img,
  .page-about__vision-img {
    max-width: 60%;
    margin: 0 auto;
  }
  .page-about__hero-glow,
  .page-about__vision-overlay {
    display: none;
  }
  .page-about__breadcrumb-link {
    color: #000;
  }
  .page-about__breadcrumb-current {
    color: #333;
  }
  .page-about__vision-btn {
    border-color: #000 !important;
    color: #000 !important;
  }
}