.page-privacy {
  --font-heading-privacy: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --color-index-bg: #D4D0C8;
  --color-index-active: #C04E3A;
  --color-divider: #8B8680;
  --color-link-underline: #6B8E4E;
  --breadcrumb-gap: 0.5rem;
  --layout-gap: 2.5rem;
  --section-spacing: 2rem;

  display: block;
  width: 100%;
  max-width: 100%;
  padding: 1.25rem 1rem 2.5rem;
  background-color: var(--color-bg, #F5F0E0);
  color: var(--color-text, #4A4A4A);
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 1rem;
  line-height: 1.7;
  box-sizing: border-box;
}

/* 阅读进度条 */
.page-privacy .progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background-color: transparent;
  z-index: 1000;
  pointer-events: none;
}
.page-privacy .progress-bar::after {
  content: '';
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-primary, #FF6B35), var(--color-accent, #FFD700));
  transition: width 0.15s ease;
}

/* 面包屑 */
.page-privacy__breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--breadcrumb-gap);
  margin-bottom: 1.25rem;
  font-size: 0.875rem;
  color: var(--color-border, #8B8680);
}
.page-privacy__breadcrumb a {
  color: var(--color-secondary, #1A2B4C);
  text-decoration: underline;
  text-decoration-color: transparent;
  transition: text-decoration-color 0.2s;
}
.page-privacy__breadcrumb a:hover {
  text-decoration-color: var(--color-secondary, #1A2B4C);
}
.page-privacy__breadcrumb-sep {
  color: var(--color-border, #8B8680);
  user-select: none;
}
.page-privacy__breadcrumb [aria-current="page"] {
  color: var(--color-text, #4A4A4A);
  font-weight: 600;
}

/* 顶部装饰图 */
.page-privacy__hero {
  margin-bottom: 1.75rem;
  border: var(--border-width, 4px) solid var(--color-border, #8B8680);
  box-shadow: var(--shadow, 0 4px 12px rgba(0,0,0,0.15));
  overflow: hidden;
  line-height: 0;
}
.page-privacy__hero-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  object-position: center;
}

/* 页面标题 */
.page-privacy__heading {
  font-family: var(--font-heading-privacy);
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 0.75rem;
  color: var(--color-secondary, #1A2B4C);
  letter-spacing: -0.01em;
  border-left: var(--border-width, 4px) solid var(--color-primary, #FF6B35);
  padding-left: 1rem;
}

.page-privacy__lead {
  font-size: 1.1rem;
  line-height: 1.6;
  margin: 0 0 var(--layout-gap);
  color: var(--color-text, #4A4A4A);
  font-weight: 400;
  max-width: 42em;
}

/* 左右分屏布局 — 移动端优先：索引在上方水平排列 */
.page-privacy__layout {
  display: block;
  width: 100%;
}

/* 左侧索引 — 移动端为水平标签 */
.page-privacy__index {
  margin-bottom: 1.75rem;
  background-color: var(--color-index-bg);
  border: var(--border-width, 4px) solid var(--color-border, #8B8680);
  box-shadow: var(--shadow, 0 4px 12px rgba(0,0,0,0.15));
  padding: 0.75rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.page-privacy__index-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-privacy__index-item {
  flex: 0 0 auto;
}
.page-privacy__index-link {
  display: block;
  padding: 0.5rem 1rem;
  font-family: var(--font-heading-privacy);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-secondary, #1A2B4C);
  background-color: transparent;
  border: 2px solid transparent;
  text-decoration: none;
  transition: background-color 0.2s, border-color 0.2s, color 0.2s;
  white-space: nowrap;
}
.page-privacy__index-link:hover {
  background-color: var(--color-bg, #F5F0E0);
  border-color: var(--color-border, #8B8680);
}
.page-privacy__index-link:focus-visible {
  outline: 3px solid var(--color-accent, #FFD700);
  outline-offset: 2px;
}

/* 右侧内容 */
.page-privacy__content {
  display: block;
  width: 100%;
}

.page-privacy__section {
  scroll-margin-top: 3rem;
}

.page-privacy__section-title {
  font-family: var(--font-heading-privacy);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.3;
  margin: 0 0 0.875rem;
  color: var(--color-secondary, #1A2B4C);
  position: relative;
  display: inline-block;
}
.page-privacy__section-title::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background-color: var(--color-primary, #FF6B35);
  margin-top: 0.375rem;
}

.page-privacy__text {
  margin: 0 0 0.5rem;
  max-width: 42em;
  color: var(--color-text, #4A4A4A);
}

.page-privacy__link {
  color: var(--color-secondary, #1A2B4C);
  text-decoration: underline;
  text-decoration-color: var(--color-link-underline);
  text-underline-offset: 2px;
  transition: color 0.2s;
}
.page-privacy__link:hover {
  color: var(--color-primary, #FF6B35);
}

/* 章节装饰分隔线 */
.page-privacy__divider {
  margin: var(--section-spacing) 0;
  height: 1px;
  background: repeating-linear-gradient(
    90deg,
    var(--color-divider) 0px,
    var(--color-divider) 8px,
    transparent 8px,
    transparent 16px
  );
  opacity: 0.5;
}

/* 信任声明 */
.page-privacy__trust {
  margin-top: 2.5rem;
  padding: 1.25rem 1.5rem;
  background-color: var(--color-index-bg);
  border-left: var(--border-width, 4px) solid var(--color-primary, #FF6B35);
  font-size: 0.9375rem;
}
.page-privacy__trust-text {
  margin: 0;
  color: var(--color-text, #4A4A4A);
  font-style: italic;
}

/* 底部链接 */
.page-privacy__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 2px solid var(--color-border, #8B8680);
}
.page-privacy__btn {
  font-family: var(--font-body, 'Inter', sans-serif);
  font-size: 1rem;
  font-weight: 600;
  padding: 0.625rem 1.5rem;
  background-color: var(--color-secondary, #1A2B4C);
  color: #fff;
  border: none;
  text-decoration: none;
  transition: background-color 0.2s, transform 0.15s;
  box-shadow: var(--shadow, 0 4px 12px rgba(0,0,0,0.15));
}
.page-privacy__btn:hover {
  background-color: var(--color-primary, #FF6B35);
  transform: translateY(-1px);
}
.page-privacy__btn:focus-visible {
  outline: 3px solid var(--color-accent, #FFD700);
  outline-offset: 2px;
}

/* 桌面端：≥768px 左右分屏 */
@media (min-width: 768px) {
  .page-privacy {
    padding: 1.75rem 2rem 3rem;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
  }

  .page-privacy__breadcrumb {
    margin-bottom: 1.5rem;
    font-size: 0.9375rem;
  }

  .page-privacy__hero {
    margin-bottom: 2.25rem;
  }

  .page-privacy__heading {
    font-size: 3rem;
    padding-left: 1.25rem;
  }

  .page-privacy__lead {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
  }

  .page-privacy__layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: var(--layout-gap);
    align-items: start;
  }

  /* 左侧索引 — 桌面固定，随滚动黏滞 */
  .page-privacy__index {
    position: sticky;
    top: 2rem;
    margin-bottom: 0;
    padding: 1rem;
    overflow: visible;
    background-color: var(--color-index-bg);
    border: var(--border-width, 4px) solid var(--color-border, #8B8680);
    box-shadow: var(--shadow, 0 4px 12px rgba(0,0,0,0.15));
  }
  .page-privacy__index-list {
    flex-direction: column;
    gap: 0.25rem;
  }
  .page-privacy__index-item {
    flex: 0 0 auto;
  }
  .page-privacy__index-link {
    padding: 0.625rem 0.875rem;
    font-size: 1.0625rem;
    white-space: normal;
    border-left: 3px solid transparent;
    transition: background-color 0.2s, border-left-color 0.2s, color 0.2s;
  }
  .page-privacy__index-link:hover {
    background-color: var(--color-bg, #F5F0E0);
    border-left-color: var(--color-border, #8B8680);
  }

  /* 右侧内容 */
  .page-privacy__content {
    min-width: 0;
  }

  .page-privacy__section-title {
    font-size: 1.75rem;
  }
  .page-privacy__section-title::after {
    width: 56px;
  }

  .page-privacy__text {
    font-size: 1.0625rem;
  }

  .page-privacy__divider {
    margin: 2.5rem 0;
  }

  .page-privacy__trust {
    margin-top: 3rem;
    padding: 1.5rem 2rem;
    font-size: 1rem;
  }

  .page-privacy__links {
    margin-top: 2.5rem;
    padding-top: 1.75rem;
    gap: 1.25rem;
  }
  .page-privacy__btn {
    font-size: 1.0625rem;
    padding: 0.75rem 2rem;
  }
}

/* 大桌面端：≥1024px 更宽松 */
@media (min-width: 1024px) {
  .page-privacy {
    padding: 2rem 3rem 4rem;
  }

  .page-privacy__layout {
    grid-template-columns: 280px 1fr;
    gap: 3rem;
  }

  .page-privacy__heading {
    font-size: 3.5rem;
  }

  .page-privacy__index {
    padding: 1.25rem;
  }
  .page-privacy__index-link {
    font-size: 1.125rem;
    padding: 0.75rem 1rem;
  }

  .page-privacy__section-title {
    font-size: 2rem;
  }

  .page-privacy__trust {
    padding: 1.75rem 2.5rem;
  }
}

/* 当前章节高亮（由JS配合 data-section 控制） */
.page-privacy__index-link.active,
.page-privacy__index-link[data-section].active {
  background-color: var(--color-bg, #F5F0E0);
  border-left-color: var(--color-index-active);
  color: var(--color-index-active);
  font-weight: 700;
}

/* 确保窄屏不横向溢出 */
@media (max-width: 380px) {
  .page-privacy {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }
  .page-privacy__heading {
    font-size: 1.75rem;
    padding-left: 0.75rem;
  }
  .page-privacy__index-link {
    padding: 0.375rem 0.625rem;
    font-size: 0.875rem;
  }
  .page-privacy__section-title {
    font-size: 1.25rem;
  }
  .page-privacy__text {
    font-size: 0.9375rem;
  }
}