/* ===== 页面专属样式：数据与隐私 (page-privacy) ===== */
.page-privacy {
  --page-privacy-index-width: 240px;
  --page-privacy-gap: 48px;
  --page-privacy-section-radius: 8px;

  display: block;
  width: 100%;
  max-width: var(--max-width, 1200px);
  margin: 0 auto;
  padding: 24px 16px 64px;
  font-family: var(--font-body, "Noto Sans SC", sans-serif);
  color: var(--color-text, #1A1A2E);
  background-color: var(--color-bg, #F4F6F9);
}

/* 面包屑 */
.page-privacy .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 24px;
  font-size: 0.875rem;
  color: var(--color-text-secondary, #8B9BB4);
}

.page-privacy .breadcrumb a {
  color: var(--color-text-secondary, #8B9BB4);
  text-decoration: none;
  transition: color var(--transition-fast, 0.2s ease);
}

.page-privacy .breadcrumb a:hover,
.page-privacy .breadcrumb a:focus-visible {
  color: var(--color-accent-blue, #00B4D8);
}

.page-privacy .breadcrumb__separator {
  color: var(--color-border, #8B9BB4);
  user-select: none;
}

/* 页面头部 */
.page-privacy__header {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: var(--border-thin, 1px solid rgba(139, 155, 180, 0.3));
}

.page-privacy__shield {
  width: 64px;
  height: auto;
  display: block;
}

.page-privacy__header h1 {
  font-family: var(--font-heading, "Source Han Sans SC", sans-serif);
  font-weight: 700;
  font-size: 2.441rem;
  color: var(--color-primary, #0B3D5F);
  margin: 0;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-privacy__intro {
  font-size: 1.063rem;
  line-height: 1.6;
  color: var(--color-text-secondary, #8B9BB4);
  max-width: 720px;
  margin: 0;
}

.page-privacy__intro a {
  color: var(--color-accent, #FF6B35);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-privacy__intro a:hover,
.page-privacy__intro a:focus-visible {
  color: var(--color-accent-blue, #00B4D8);
}

/* 布局容器 */
.page-privacy__layout {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

/* ===== 左侧索引（移动端：水平滚动标签） ===== */
.page-privacy__index {
  position: relative;
  width: 100%;
  overflow: hidden;
  background-color: var(--color-bg-alt, #ffffff);
  border-radius: var(--page-privacy-section-radius);
  border: var(--border-thin, 1px solid rgba(139, 155, 180, 0.3));
  box-shadow: var(--shadow-card, 0 2px 12px rgba(11, 61, 95, 0.08));
}

.page-privacy__index-list {
  display: flex;
  flex-wrap: nowrap;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border, #8B9BB4) transparent;
}

.page-privacy__index-list::-webkit-scrollbar {
  height: 4px;
}

.page-privacy__index-list::-webkit-scrollbar-thumb {
  background-color: var(--color-border, #8B9BB4);
  border-radius: 4px;
}

.page-privacy__index-item {
  flex: 0 0 auto;
  margin: 0;
  padding: 0;
}

.page-privacy__index-link {
  display: block;
  padding: 14px 20px;
  font-family: var(--font-heading, "Source Han Sans SC", sans-serif);
  font-weight: 500;
  font-size: 0.938rem;
  color: var(--color-text-secondary, #8B9BB4);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 3px solid transparent;
  transition: color var(--transition-fast, 0.2s ease), border-color var(--transition-fast, 0.2s ease), background-color var(--transition-fast, 0.2s ease);
}

.page-privacy__index-link:hover,
.page-privacy__index-link:focus-visible {
  color: var(--color-accent-blue, #00B4D8);
  border-bottom-color: var(--color-accent-blue, #00B4D8);
  background-color: rgba(0, 180, 216, 0.04);
}

.page-privacy__index-link:focus-visible {
  outline: 2px solid var(--color-accent-blue, #00B4D8);
  outline-offset: -2px;
}

/* 索引装饰（网格背景，移动端隐藏） */
.page-privacy__index-decor {
  display: none;
}

/* ===== 右侧内容区 ===== */
.page-privacy__content {
  display: flex;
  flex-direction: column;
  gap: 24px;
  flex: 1;
  min-width: 0;
}

/* 每个章节卡片 */
.page-privacy__section {
  background-color: var(--color-bg-alt, #ffffff);
  border-radius: var(--page-privacy-section-radius);
  border: var(--border-thin, 1px solid rgba(139, 155, 180, 0.3));
  box-shadow: var(--shadow-card, 0 2px 12px rgba(11, 61, 95, 0.08));
  padding: 28px 24px;
  transition: box-shadow var(--transition-base, 0.35s ease), border-color var(--transition-base, 0.35s ease);
  scroll-margin-top: 80px;
}

.page-privacy__section:hover {
  box-shadow: var(--shadow-hover, 0 6px 24px rgba(11, 61, 95, 0.14));
}

.page-privacy__section:target {
  border-color: var(--color-accent-blue, #00B4D8);
  box-shadow: 0 0 0 3px rgba(0, 180, 216, 0.15), var(--shadow-hover, 0 6px 24px rgba(11, 61, 95, 0.14));
}

.page-privacy__section-title {
  font-family: var(--font-heading, "Source Han Sans SC", sans-serif);
  font-weight: 700;
  font-size: 1.563rem;
  color: var(--color-primary, #0B3D5F);
  margin: 0 0 16px 0;
  line-height: 1.3;
  padding-bottom: 12px;
  border-bottom: var(--border-thin, 1px solid rgba(139, 155, 180, 0.3));
}

.page-privacy__section-body {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text, #1A1A2E);
}

.page-privacy__section-body p {
  margin: 0 0 14px 0;
}

.page-privacy__section-body p:last-child {
  margin-bottom: 0;
}

.page-privacy__section-body ul {
  margin: 0 0 16px 0;
  padding-left: 24px;
  list-style: disc;
}

.page-privacy__section-body li {
  margin-bottom: 10px;
  line-height: 1.65;
}

.page-privacy__section-body li:last-child {
  margin-bottom: 0;
}

.page-privacy__section-body li strong {
  color: var(--color-primary, #0B3D5F);
  font-weight: 600;
}

.page-privacy__section-body a {
  color: var(--color-accent, #FF6B35);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-privacy__section-body a:hover,
.page-privacy__section-body a:focus-visible {
  color: var(--color-accent-blue, #00B4D8);
}

.page-privacy__emphasis {
  font-size: 0.938rem;
  color: var(--color-text-secondary, #8B9BB4);
  padding: 12px 16px;
  background-color: var(--color-bg, #F4F6F9);
  border-left: 3px solid var(--color-accent-blue, #00B4D8);
  border-radius: 4px;
  margin-top: 8px;
}

/* ===== 页脚信息区 ===== */
.page-privacy__footer-info {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.page-privacy__contact-card {
  background-color: var(--color-bg-alt, #ffffff);
  border-radius: var(--page-privacy-section-radius);
  border: var(--border-thin, 1px solid rgba(139, 155, 180, 0.3));
  box-shadow: var(--shadow-card, 0 2px 12px rgba(11, 61, 95, 0.08));
  padding: 28px 24px;
}

.page-privacy__contact-title {
  font-family: var(--font-heading, "Source Han Sans SC", sans-serif);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-primary, #0B3D5F);
  margin: 0 0 12px 0;
  padding-bottom: 10px;
  border-bottom: var(--border-thin, 1px solid rgba(139, 155, 180, 0.3));
}

.page-privacy__contact-card > p {
  font-size: 0.938rem;
  line-height: 1.6;
  color: var(--color-text, #1A1A2E);
  margin: 0 0 14px 0;
}

.page-privacy__contact-list {
  list-style: none;
  padding: 0;
  margin: 0 0 16px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-privacy__contact-list li {
  font-size: 0.938rem;
  line-height: 1.5;
  color: var(--color-text, #1A1A2E);
}

.page-privacy__contact-label {
  font-weight: 600;
  color: var(--color-primary, #0B3D5F);
  margin-right: 4px;
}

.page-privacy__contact-list a {
  color: var(--color-accent, #FF6B35);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-privacy__contact-list a:hover,
.page-privacy__contact-list a:focus-visible {
  color: var(--color-accent-blue, #00B4D8);
}

.page-privacy__contact-note {
  font-size: 0.875rem;
  color: var(--color-text-secondary, #8B9BB4);
  padding: 12px 16px;
  background-color: var(--color-bg, #F4F6F9);
  border-radius: 4px;
  margin: 0 0 18px 0;
  line-height: 1.5;
}

.page-privacy__contact-note a {
  color: var(--color-accent, #FF6B35);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.page-privacy__contact-note a:hover,
.page-privacy__contact-note a:focus-visible {
  color: var(--color-accent-blue, #00B4D8);
}

.page-privacy__contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.page-privacy .btn--primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  font-family: var(--font-heading, "Source Han Sans SC", sans-serif);
  font-weight: 600;
  font-size: 0.938rem;
  color: #ffffff;
  background-color: var(--color-accent, #FF6B35);
  border: none;
  border-radius: 6px;
  text-decoration: none;
  transition: background-color var(--transition-fast, 0.2s ease), transform var(--transition-fast, 0.2s ease);
  cursor: pointer;
}

.page-privacy .btn--primary:hover,
.page-privacy .btn--primary:focus-visible {
  background-color: #e55a2b;
  transform: translateY(-1px);
}

.page-privacy .btn--primary:focus-visible {
  outline: 3px solid var(--color-accent-blue, #00B4D8);
  outline-offset: 2px;
}

.page-privacy .btn--secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 24px;
  font-family: var(--font-heading, "Source Han Sans SC", sans-serif);
  font-weight: 600;
  font-size: 0.938rem;
  color: var(--color-accent-blue, #00B4D8);
  background-color: transparent;
  border: 2px solid var(--color-accent-blue, #00B4D8);
  border-radius: 6px;
  text-decoration: none;
  transition: background-color var(--transition-fast, 0.2s ease), color var(--transition-fast, 0.2s ease), transform var(--transition-fast, 0.2s ease);
  cursor: pointer;
}

.page-privacy .btn--secondary:hover,
.page-privacy .btn--secondary:focus-visible {
  background-color: var(--color-accent-blue, #00B4D8);
  color: #ffffff;
  transform: translateY(-1px);
}

.page-privacy .btn--secondary:focus-visible {
  outline: 3px solid var(--color-accent-blue, #00B4D8);
  outline-offset: 2px;
}

.page-privacy__update-date {
  font-size: 0.875rem;
  color: var(--color-text-secondary, #8B9BB4);
  text-align: right;
  margin: 0;
  padding-top: 12px;
  border-top: var(--border-thin, 1px solid rgba(139, 155, 180, 0.3));
}

/* ===== 桌面端样式 (≥768px) ===== */
@media (min-width: 768px) {
  .page-privacy {
    padding: 32px 32px 80px;
  }

  .page-privacy__header {
    margin-bottom: 48px;
    padding-bottom: 28px;
  }

  .page-privacy__header h1 {
    font-size: 3.052rem;
  }

  .page-privacy__intro {
    font-size: 1.125rem;
  }

  .page-privacy__layout {
    flex-direction: row;
    gap: var(--page-privacy-gap);
    align-items: flex-start;
  }

  /* 左侧索引：固定侧边栏 */
  .page-privacy__index {
    width: var(--page-privacy-index-width);
    flex-shrink: 0;
    position: sticky;
    top: 24px;
    align-self: flex-start;
    display: flex;
    flex-direction: column;
    border-radius: var(--page-privacy-section-radius);
    overflow: hidden;
    background-color: var(--color-bg-alt, #ffffff);
  }

  .page-privacy__index-list {
    flex-direction: column;
    overflow: visible;
    padding: 8px 0;
    gap: 0;
  }

  .page-privacy__index-item {
    flex: none;
  }

  .page-privacy__index-link {
    padding: 12px 20px;
    font-size: 0.938rem;
    border-bottom: none;
    border-left: 3px solid transparent;
    white-space: normal;
    word-break: break-word;
  }

  .page-privacy__index-link:hover,
  .page-privacy__index-link:focus-visible {
    border-bottom: none;
    border-left-color: var(--color-accent-blue, #00B4D8);
    background-color: rgba(0, 180, 216, 0.06);
  }

  /* 索引装饰（网格背景）：桌面显示 */
  .page-privacy__index-decor {
    display: block;
    position: relative;
    width: 100%;
    height: 320px;
    overflow: hidden;
    margin-top: auto;
    opacity: 0.35;
  }

  .page-privacy__grid-bg {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: left top;
    filter: grayscale(0.5) contrast(0.6);
  }

  /* 右侧内容 */
  .page-privacy__content {
    flex: 1;
    min-width: 0;
    gap: 28px;
  }

  .page-privacy__section {
    padding: 36px 32px;
  }

  .page-privacy__section-title {
    font-size: 1.953rem;
    margin-bottom: 20px;
  }

  .page-privacy__contact-card {
    padding: 36px 32px;
  }

  .page-privacy__contact-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 16px 32px;
  }

  .page-privacy__contact-actions {
    gap: 16px;
  }
}

/* ===== 大桌面端 (≥1024px) ===== */
@media (min-width: 1024px) {
  .page-privacy {
    padding: 40px 48px 96px;
  }

  .page-privacy__index {
    --page-privacy-index-width: 260px;
  }

  .page-privacy__index-link {
    padding: 14px 24px;
    font-size: 1rem;
  }

  .page-privacy__index-decor {
    height: 400px;
  }

  .page-privacy__section {
    padding: 44px 40px;
  }
}

/* ===== 辅助功能 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-privacy *,
  .page-privacy *::before,
  .page-privacy *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

.page-privacy a:focus-visible,
.page-privacy button:focus-visible {
  outline: 3px solid var(--color-accent-blue, #00B4D8);
  outline-offset: 2px;
}

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

.page-privacy__shield {
  width: 64px;
  height: 64px;
  object-fit: contain;
}

/* 打印样式优化 */
@media print {
  .page-privacy {
    padding: 0;
    background: #ffffff;
  }

  .page-privacy__index {
    display: none;
  }

  .page-privacy__layout {
    flex-direction: column;
    gap: 0;
  }

  .page-privacy__section {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ccc;
    margin-bottom: 16px;
  }

  .page-privacy .btn {
    display: none;
  }
}