/* ===== 页面专属 CSS：.page-privacy ===== */
.page-privacy {
  --privacy-gold-line: var(--color-gold, #F5A623);
  --privacy-accent-line: var(--color-accent, #1F8B4C);
  --privacy-index-bg: var(--color-surface-dark, #121E2D);
  --privacy-section-gap: 3.5rem;
  --privacy-index-width: 200px;
}

/* 辅助类：视觉隐藏但可访问 */
.page-privacy .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ===== Hero 标题区 ===== */
.page-privacy .privacy-hero {
  position: relative;
  overflow: hidden;
  min-height: 320px;
  display: flex;
  align-items: flex-end;
  background: var(--gradient-hero, linear-gradient(135deg, #0A1F3D, #1F8B4C));
}

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

.page-privacy .privacy-hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.page-privacy .privacy-hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(135deg, rgba(10, 31, 61, 0.85) 30%, rgba(31, 139, 76, 0.45) 100%);
}

.page-privacy .privacy-hero-content {
  position: relative;
  z-index: 2;
  padding-top: 2.5rem;
  padding-bottom: 2.5rem;
  width: 100%;
}

.page-privacy .privacy-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font: var(--font-body, 300 1rem/1.6 sans-serif);
  color: var(--color-text-secondary, #8FA0B0);
  margin-bottom: 1.25rem;
  font-size: 0.875rem;
}

.page-privacy .privacy-breadcrumb a {
  color: var(--color-text-secondary, #8FA0B0);
  text-decoration: none;
  transition: color var(--transition-default, 0.3s ease);
}

.page-privacy .privacy-breadcrumb a:hover,
.page-privacy .privacy-breadcrumb a:focus {
  color: var(--privacy-gold-line, #F5A623);
}

.page-privacy .breadcrumb-sep {
  color: var(--color-text-secondary, #8FA0B0);
  opacity: 0.5;
}

.page-privacy .privacy-title {
  font: var(--font-heading, 700 2.25rem/1.2 sans-serif);
  font-size: clamp(2rem, 5vw, 3rem);
  color: var(--color-text-primary, #E8EDF4);
  margin: 0 0 0.5rem 0;
  letter-spacing: 0.02em;
}

.page-privacy .privacy-subtitle {
  font: var(--font-body, 300 1rem/1.6 sans-serif);
  font-size: clamp(0.95rem, 1.8vw, 1.15rem);
  color: var(--color-text-secondary, #8FA0B0);
  max-width: 540px;
  margin: 0;
  line-height: 1.5;
}

/* ===== 双栏布局 ===== */
.page-privacy .privacy-layout {
  display: flex;
  gap: 2.5rem;
  padding-top: 3rem;
  padding-bottom: 4rem;
  align-items: flex-start;
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  width: 100%;
}

/* ===== 侧边索引 ===== */
.page-privacy .privacy-index {
  flex: 0 0 var(--privacy-index-width, 200px);
  position: sticky;
  top: 2rem;
  background: var(--privacy-index-bg, #121E2D);
  border-radius: 8px;
  padding: 1.25rem 0;
  border: 1px solid var(--color-border, rgba(31, 139, 76, 0.25));
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.page-privacy .index-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-privacy .index-link {
  display: block;
  padding: 0.6rem 1.25rem;
  font: var(--font-body, 300 1rem/1.6 sans-serif);
  font-size: 0.9rem;
  color: var(--color-text-secondary, #8FA0B0);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: all var(--transition-default, 0.3s ease);
  position: relative;
}

.page-privacy .index-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 1.25rem;
  right: 1.25rem;
  height: 1px;
  background: var(--color-border, rgba(31, 139, 76, 0.25));
  opacity: 0.4;
}

.page-privacy .index-link:hover,
.page-privacy .index-link:focus {
  color: var(--color-text-primary, #E8EDF4);
  border-left-color: var(--privacy-gold-line, #F5A623);
  background: rgba(245, 166, 35, 0.06);
}

/* ===== 内容区 ===== */
.page-privacy .privacy-content {
  flex: 1;
  min-width: 0;
}

.page-privacy .privacy-section {
  position: relative;
  padding: 2rem 0;
  margin-bottom: var(--privacy-section-gap, 3.5rem);
  border-bottom: 1px solid var(--color-border, rgba(31, 139, 76, 0.25));
}

.page-privacy .privacy-section:last-of-type {
  border-bottom: none;
  margin-bottom: 0;
}

.page-privacy .section-number {
  font: var(--font-data, 400 0.875rem/1.4 monospace);
  font-size: 0.75rem;
  color: var(--privacy-accent-line, #1F8B4C);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
  opacity: 0.7;
}

.page-privacy .section-heading {
  font: var(--font-heading, 700 2.25rem/1.2 sans-serif);
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  color: var(--color-text-primary, #E8EDF4);
  margin: 0 0 1.25rem 0;
  position: relative;
  padding-left: 1rem;
  border-left: 3px solid var(--privacy-gold-line, #F5A623);
}

.page-privacy .section-body {
  font: var(--font-body, 300 1rem/1.6 sans-serif);
  color: var(--color-text-secondary, #8FA0B0);
  margin: 0 0 1rem 0;
  line-height: 1.7;
  max-width: 680px;
}

.page-privacy .section-body:last-child {
  margin-bottom: 0;
}

.page-privacy .content-link {
  color: var(--privacy-accent-line, #1F8B4C);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-default, 0.3s ease), color var(--transition-default, 0.3s ease);
  font-weight: 400;
}

.page-privacy .content-link:hover,
.page-privacy .content-link:focus {
  color: var(--privacy-gold-line, #F5A623);
  border-bottom-color: currentColor;
}

.page-privacy .footnote-note {
  font-size: 0.85rem;
  color: var(--color-text-secondary, #8FA0B0);
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border, rgba(31, 139, 76, 0.25));
  margin-top: 1.5rem;
  opacity: 0.8;
}

/* ===== 移动端优先适配 ===== */
@media (max-width: 767px) {
  .page-privacy .privacy-hero {
    min-height: 240px;
    align-items: flex-end;
  }

  .page-privacy .privacy-hero-content {
    padding-top: 1.5rem;
    padding-bottom: 1.5rem;
  }

  .page-privacy .privacy-layout {
    flex-direction: column;
    gap: 1.5rem;
    padding-top: 1.5rem;
    padding-bottom: 2.5rem;
  }

  .page-privacy .privacy-index {
    position: static;
    flex: none;
    width: 100%;
    padding: 0.75rem 0;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: 6px;
  }

  .page-privacy .index-list {
    display: flex;
    gap: 0;
    padding: 0 0.75rem;
    white-space: nowrap;
  }

  .page-privacy .index-link {
    padding: 0.5rem 1rem;
    border-left: none;
    border-bottom: 2px solid transparent;
    font-size: 0.85rem;
    flex-shrink: 0;
  }

  .page-privacy .index-link::after {
    display: none;
  }

  .page-privacy .index-link:hover,
  .page-privacy .index-link:focus {
    border-left-color: transparent;
    border-bottom-color: var(--privacy-gold-line, #F5A623);
  }

  .page-privacy .privacy-section {
    padding: 1.5rem 0;
    margin-bottom: 2rem;
  }

  .page-privacy .section-heading {
    padding-left: 0.75rem;
  }

  .page-privacy .section-body {
    max-width: 100%;
  }

  .page-privacy .privacy-title {
    font-size: clamp(1.6rem, 7vw, 2rem);
  }

  .page-privacy .privacy-subtitle {
    font-size: 0.9rem;
  }
}

/* ===== 桌面端增强 ===== */
@media (min-width: 768px) {
  .page-privacy .privacy-hero {
    min-height: 320px;
  }

  .page-privacy .privacy-hero-content {
    padding-top: 3rem;
    padding-bottom: 2.5rem;
  }

  .page-privacy .privacy-index {
    margin-top: 0.5rem;
  }

  .page-privacy .privacy-section {
    padding: 2.5rem 0;
  }
}

/* ===== 大屏优化 ===== */
@media (min-width: 1024px) {
  .page-privacy .privacy-hero {
    min-height: 360px;
  }

  .page-privacy .privacy-hero-content {
    padding-top: 4rem;
    padding-bottom: 3rem;
  }

  .page-privacy .privacy-layout {
    gap: 3.5rem;
  }

  .page-privacy .privacy-index {
    flex-basis: 220px;
    padding: 1.5rem 0;
  }

  .page-privacy .privacy-title {
    font-size: 3rem;
  }

  .page-privacy .privacy-section {
    padding: 3rem 0;
    margin-bottom: 4rem;
  }
}

/* ===== 超宽屏内容约束 ===== */
@media (min-width: 1400px) {
  .page-privacy .privacy-layout {
    max-width: var(--max-width, 1200px);
  }

  .page-privacy .privacy-section-body {
    max-width: 720px;
  }
}