/* ===== 页面专属样式：privacy（数据与隐私） ===== */
.page-privacy {
  --color-primary: #D4AF37;
  --color-primary-dark: #B8860B;
  --color-secondary: #C62828;
  --color-bg: #1A1A2E;
  --color-surface: #16213E;
  --color-text-primary: #FFD700;
  --color-text-body: #E0E0E0;
  --color-accent: #00BCD4;
  --color-border: rgba(212, 175, 55, 0.3);
  --font-heading: 'Georgia', 'Songti SC', 'Noto Serif SC', serif;
  --font-body: 'Arial', 'PingFang SC', 'Noto Sans SC', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  --max-width: 1200px;
  --card-shadow: 0 4px 20px rgba(0,0,0,0.4), 0 1px 3px rgba(212,175,55,0.1);
  --card-stack-shadow: 0 8px 32px rgba(0,0,0,0.5), 0 2px 8px rgba(212,175,55,0.15), inset 0 1px 0 rgba(212,175,55,0.08);
}

/* --- 容器与布局 --- */
.page-privacy .container {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 16px;
  padding-right: 16px;
}

/* --- 面包屑 --- */
.page-privacy .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 8px;
  padding-top: 16px;
  padding-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-body);
  opacity: 0.8;
}
.page-privacy .breadcrumb-item {
  color: var(--color-text-body);
  text-decoration: none;
  transition: color 0.2s;
}
.page-privacy .breadcrumb-item:hover {
  color: var(--color-primary);
}
.page-privacy .breadcrumb-separator {
  opacity: 0.5;
  font-size: 0.6rem;
}
.page-privacy .breadcrumb-current {
  color: var(--color-primary);
  font-weight: 600;
}

/* --- 页眉区 --- */
.page-privacy .privacy-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding-top: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 32px;
}
.page-privacy .privacy-header-icon {
  width: 80px;
  height: 80px;
  margin-bottom: 16px;
  background: radial-gradient(circle at 30% 30%, rgba(212,175,55,0.15), transparent 70%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-privacy .privacy-shield-img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  max-width: 100%;
  height: auto;
  filter: drop-shadow(0 0 12px rgba(212,175,55,0.25));
}
.page-privacy .privacy-heading {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin: 0 0 8px;
  letter-spacing: 0.04em;
  text-shadow: 0 1px 6px rgba(212,175,55,0.15);
}
.page-privacy .privacy-subtitle {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--color-text-body);
  max-width: 640px;
  margin: 0 auto 12px;
}
.page-privacy .privacy-effective-date {
  font-size: 0.75rem;
  color: var(--color-primary-dark);
  opacity: 0.7;
  margin: 0;
}

/* --- 双列布局（桌面） --- */
.page-privacy .privacy-layout {
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding-bottom: 48px;
}

/* --- 左侧索引（优先移动端隐藏，桌面显示） --- */
.page-privacy .privacy-index {
  display: none;
}
.page-privacy .index-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.page-privacy .index-link {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-body);
  text-decoration: none;
  padding: 6px 12px;
  border-left: 2px solid transparent;
  transition: all 0.25s ease;
  display: block;
  opacity: 0.75;
}
.page-privacy .index-link:hover,
.page-privacy .index-link:focus {
  color: var(--color-primary);
  border-left-color: var(--color-primary);
  opacity: 1;
  padding-left: 18px;
}
.page-privacy .index-decor-line {
  margin-top: 20px;
  height: 1px;
  background: linear-gradient(90deg, var(--color-border), transparent);
  width: 60%;
}

/* --- 右侧正文 --- */
.page-privacy .privacy-content {
  flex: 1;
  min-width: 0;
}

/* --- 章节 --- */
.page-privacy .privacy-section {
  margin-bottom: 40px;
  scroll-margin-top: 96px;
}
.page-privacy .section-number {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-primary);
  letter-spacing: 0.1em;
  margin-bottom: 4px;
  opacity: 0.6;
}
.page-privacy .section-heading {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 0 0 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-border);
  position: relative;
}
.page-privacy .section-heading::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 48px;
  height: 2px;
  background: var(--color-primary);
}
.page-privacy .section-intro {
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-text-body);
  margin: 0 0 20px;
  opacity: 0.85;
}
.page-privacy .section-footnote {
  font-size: 0.78rem;
  line-height: 1.6;
  color: var(--color-text-body);
  background: rgba(212,175,55,0.06);
  border-left: 3px solid var(--color-primary);
  padding: 12px 16px;
  margin: 20px 0 0;
  border-radius: 0 6px 6px 0;
}
.page-privacy .section-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
  margin: 32px 0;
  opacity: 0.5;
}

/* --- 信息收集卡片网格 --- */
.page-privacy .collect-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.page-privacy .collect-card {
  padding: 20px;
  background: var(--color-surface);
  border-radius: 12px;
  border: 1px solid var(--color-border);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.page-privacy .collect-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--card-shadow);
}
.page-privacy .collect-card-icon {
  margin-bottom: 10px;
  width: 28px;
  height: 28px;
}
.page-privacy .collect-card-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 6px;
}
.page-privacy .collect-card-desc {
  font-family: var(--font-body);
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--color-text-body);
  margin: 0;
  opacity: 0.8;
}

/* --- 使用目的列表 --- */
.page-privacy .usage-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.page-privacy .usage-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 16px;
  background: var(--color-surface);
  border-radius: 8px;
  border-left: 3px solid var(--color-primary);
  transition: background 0.2s;
}
.page-privacy .usage-item:hover {
  background: rgba(212,175,55,0.06);
}
.page-privacy .usage-marker {
  flex-shrink: 0;
  min-width: 44px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}
.page-privacy .tag-gold {
  background: rgba(212,175,55,0.15);
  color: var(--color-primary);
  padding: 2px 10px;
  border-radius: 20px;
  border: 1px solid rgba(212,175,55,0.3);
  display: inline-block;
}
.page-privacy .usage-text {
  font-family: var(--font-body);
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--color-text-body);
  margin: 0;
}

/* --- 安全可视化 --- */
.page-privacy .security-visual {
  margin-bottom: 20px;
  text-align: center;
}
.page-privacy .security-img {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
  border: 1px solid var(--color-border);
  object-fit: cover;
}
/* --- 安全措施网格 --- */
.page-privacy .security-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.page-privacy .security-item {
  padding: 18px 20px;
  background: var(--color-surface);
  border-radius: 10px;
  border: 1px solid var(--color-border);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.page-privacy .security-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--card-stack-shadow);
}
.page-privacy .security-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-block;
  margin-bottom: 6px;
  letter-spacing: 0.04em;
  background: rgba(212,175,55,0.08);
  padding: 2px 10px;
  border-radius: 4px;
}
.page-privacy .security-desc {
  font-family: var(--font-body);
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--color-text-body);
  margin: 0;
  opacity: 0.85;
}

/* --- 用户权利卡片 --- */
.page-privacy .rights-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.page-privacy .rights-card {
  padding: 18px 20px;
  background: var(--color-surface);
  border-radius: 10px;
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.page-privacy .rights-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--card-shadow);
}
.page-privacy .rights-card-icon {
  width: 24px;
  height: 24px;
  margin-bottom: 8px;
  opacity: 0.8;
}
.page-privacy .rights-card-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 6px;
}
.page-privacy .rights-card-desc {
  font-family: var(--font-body);
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--color-text-body);
  margin: 0;
  opacity: 0.8;
}

/* --- 联系块 --- */
.page-privacy .contact-block {
  padding: 24px;
  background: var(--color-surface);
  border-radius: 12px;
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.page-privacy .contact-line {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.page-privacy .contact-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-primary-dark);
  letter-spacing: 0.04em;
  opacity: 0.7;
}
.page-privacy .contact-value {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--color-text-body);
  text-decoration: none;
  transition: color 0.2s;
}
.page-privacy .contact-value:hover {
  color: var(--color-primary);
}

/* --- 返回顶部 --- */
.page-privacy .privacy-back-top {
  display: flex;
  justify-content: flex-end;
  margin-top: 24px;
}
.page-privacy .back-to-top {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-primary);
  text-decoration: none;
  transition: background 0.25s, border-color 0.25s, transform 0.2s;
}
.page-privacy .back-to-top:hover {
  background: rgba(212,175,55,0.12);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

/* ===== 响应式：平板（≥640px） ===== */
@media (min-width: 640px) {
  .page-privacy .privacy-heading {
    font-size: 2rem;
  }
  .page-privacy .collect-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-privacy .security-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-privacy .rights-list {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-privacy .contact-line {
    flex-direction: row;
    align-items: baseline;
    gap: 12px;
  }
  .page-privacy .contact-label {
    min-width: 80px;
  }
}

/* ===== 响应式：桌面（≥960px） ===== */
@media (min-width: 960px) {
  .page-privacy .privacy-layout {
    flex-direction: row;
    gap: 48px;
  }
  .page-privacy .privacy-index {
    display: block;
    flex-shrink: 0;
    width: 180px;
    position: sticky;
    top: 96px;
    align-self: start;
  }
  .page-privacy .privacy-content {
    max-width: 780px;
  }
  .page-privacy .collect-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-privacy .security-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-privacy .rights-list {
    grid-template-columns: repeat(2, 1fr);
  }
  .page-privacy .privacy-heading {
    font-size: 2.25rem;
  }
  .page-privacy .section-heading {
    font-size: 1.5rem;
  }
}

/* ===== 响应式：大屏（≥1200px） ===== */
@media (min-width: 1200px) {
  .page-privacy .container {
    padding-left: 24px;
    padding-right: 24px;
  }
  .page-privacy .privacy-index {
    width: 200px;
  }
}