/* ===== 页面专属：privacy ===== */
.page-privacy {
  --privacy-bg-start: #0A1128;
  --privacy-bg-end: #0B1D3A;
  --privacy-card-bg: rgba(11, 29, 58, 0.75);
  --privacy-border: rgba(255, 255, 255, 0.08);
  --privacy-divider: rgba(255, 255, 255, 0.10);
  --privacy-text-secondary: rgba(255, 255, 255, 0.70);
  --privacy-toc-width: 240px;
  --privacy-banner-height: 200px;
  --privacy-radius-card: 20px;
  --privacy-radius-sm: 12px;

  display: flex;
  flex-direction: column;
  background: linear-gradient(160deg, var(--privacy-bg-start), var(--privacy-bg-end));
  color: var(--color-text-light, #FFFFFF);
  font-family: var(--font-body, "Inter", "Noto Sans SC", system-ui, sans-serif);
  line-height: 1.7;
  min-height: 100vh;
}

/* ---- 横幅 ---- */
.privacy-banner {
  position: relative;
  width: 100%;
  height: var(--privacy-banner-height);
  overflow: hidden;
  background: var(--color-primary, #0B1D3A);
}
.privacy-banner-img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.privacy-banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(10, 17, 40, 0.30), rgba(10, 17, 40, 0.80));
  pointer-events: none;
}

/* ---- 容器 ---- */
.privacy-container {
  width: 100%;
  max-width: var(--max-width, 1280px);
  margin: 0 auto;
  padding: 1.5rem 1rem 3rem;
}

/* ---- 面包屑 ---- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-family: var(--font-nav, "Inter", "Noto Sans SC", system-ui, sans-serif);
  color: var(--privacy-text-secondary);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--color-accent, #FF6B35);
  text-decoration: none;
  transition: opacity var(--transition, 0.25s ease);
}
.breadcrumb a:hover,
.breadcrumb a:focus-visible {
  opacity: 0.8;
  outline: 2px solid var(--color-accent, #FF6B35);
  outline-offset: 2px;
  border-radius: 2px;
}
.breadcrumb .separator {
  color: var(--privacy-text-secondary);
  user-select: none;
}
.breadcrumb [aria-current="page"] {
  color: var(--color-text-light, #FFFFFF);
  font-weight: 600;
}

/* ---- 布局：侧边栏 + 主内容 ---- */
.privacy-layout {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* ---- 侧边栏目录 ---- */
.privacy-toc {
  flex-shrink: 0;
  width: 100%;
}

/* 移动端折叠目录 */
.toc-mobile {
  background: var(--privacy-card-bg);
  border: 1px solid var(--privacy-border);
  border-radius: var(--privacy-radius-sm);
  overflow: hidden;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.toc-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  font-family: var(--font-heading, "Montserrat", "Noto Sans SC", system-ui, sans-serif);
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-accent, #FF6B35);
  cursor: pointer;
  user-select: none;
  list-style: none;
}
.toc-summary::after {
  content: "";
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 6px solid var(--color-accent, #FF6B35);
  transition: transform var(--transition, 0.25s ease);
}
details[open] .toc-summary::after {
  transform: rotate(180deg);
}
.toc-summary::-webkit-details-marker {
  display: none;
}
.toc-mobile .toc-list {
  padding: 0 1rem 0.75rem;
  margin: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.toc-mobile .toc-list a {
  display: block;
  padding: 0.5rem 0.75rem;
  color: var(--color-text-light, #FFFFFF);
  text-decoration: none;
  font-size: 0.9rem;
  font-family: var(--font-nav, "Inter", "Noto Sans SC", system-ui, sans-serif);
  border-radius: 6px;
  transition: background var(--transition, 0.25s ease), color var(--transition, 0.25s ease);
}
.toc-mobile .toc-list a:hover,
.toc-mobile .toc-list a:focus-visible {
  background: rgba(255, 107, 53, 0.15);
  color: var(--color-accent, #FF6B35);
  outline: none;
}

/* 桌面端目录（默认隐藏） */
.toc-desktop {
  display: none;
}

/* ---- 主内容区 ---- */
.privacy-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* ---- 标题区 ---- */
.privacy-title {
  font-family: var(--font-heading, "Montserrat", "Noto Sans SC", system-ui, sans-serif);
  font-size: 1.85rem;
  font-weight: 700;
  font-style: italic;
  color: var(--color-text-light, #FFFFFF);
  margin: 0 0 0.3rem;
  line-height: 1.2;
}
.privacy-meta {
  font-size: 0.85rem;
  color: var(--privacy-text-secondary);
  margin: 0 0 1.25rem;
  font-family: var(--font-data, "JetBrains Mono", "Courier New", monospace);
  letter-spacing: 0.02em;
}
.privacy-intro {
  font-size: 1.05rem;
  color: var(--color-text-light, #FFFFFF);
  background: var(--privacy-card-bg);
  border: 1px solid var(--privacy-border);
  border-radius: var(--privacy-radius-sm);
  padding: 1.25rem 1.5rem;
  margin: 0 0 1.5rem;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  line-height: 1.7;
}

/* ---- 章节 ---- */
.privacy-section {
  padding: 0.5rem 0;
}
.section-heading {
  font-family: var(--font-heading, "Montserrat", "Noto Sans SC", system-ui, sans-serif);
  font-size: 1.35rem;
  font-weight: 700;
  font-style: italic;
  color: var(--color-accent, #FF6B35);
  margin: 0 0 1rem;
  letter-spacing: -0.01em;
}
.section-body {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}
.clause {
  margin: 0;
  color: var(--color-text-light, #FFFFFF);
  font-size: 0.95rem;
  line-height: 1.75;
}
.clause-num {
  display: inline-block;
  font-family: var(--font-data, "JetBrains Mono", "Courier New", monospace);
  font-weight: 700;
  font-size: 0.8rem;
  color: var(--color-accent, #FF6B35);
  background: rgba(255, 107, 53, 0.12);
  padding: 0.1rem 0.5rem;
  border-radius: 4px;
  margin-right: 0.4rem;
  letter-spacing: 0.04em;
  vertical-align: baseline;
}

/* ---- tooltip ---- */
.tooltip {
  position: relative;
  cursor: help;
  color: var(--color-accent, #FF6B35);
  border-bottom: 1px dotted var(--color-accent, #FF6B35);
  transition: color var(--transition, 0.25s ease);
}
.tooltip:hover,
.tooltip:focus-visible {
  color: var(--color-accent-hover, #FF8C00);
  border-bottom-style: solid;
}
.tooltip::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) scale(0.92);
  background: var(--color-primary, #0B1D3A);
  color: var(--color-text-light, #FFFFFF);
  padding: 0.45rem 0.85rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-family: var(--font-body, "Inter", "Noto Sans SC", system-ui, sans-serif);
  line-height: 1.4;
  white-space: nowrap;
  max-width: 260px;
  white-space: normal;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
  border: 1px solid var(--privacy-border);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition, 0.25s ease), transform var(--transition, 0.25s ease);
  z-index: 20;
}
.tooltip:hover::after,
.tooltip:focus-visible::after {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

/* ---- 分隔线 ---- */
.privacy-divider {
  border: none;
  height: 1px;
  background: var(--privacy-divider);
  margin: 1.25rem 0;
}

/* ---- 联系方式列表 ---- */
.contact-list {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.contact-list li {
  font-size: 0.95rem;
  color: var(--color-text-light, #FFFFFF);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.25rem;
}
.contact-label {
  font-family: var(--font-data, "JetBrains Mono", "Courier New", monospace);
  font-weight: 600;
  font-size: 0.8rem;
  color: var(--privacy-text-secondary);
  min-width: 5.5rem;
}
.contact-list a {
  color: var(--color-accent, #FF6B35);
  text-decoration: none;
  transition: opacity var(--transition, 0.25s ease);
}
.contact-list a:hover,
.contact-list a:focus-visible {
  opacity: 0.8;
  outline: 2px solid var(--color-accent, #FF6B35);
  outline-offset: 2px;
  border-radius: 2px;
}
.contact-note {
  margin-top: 0.75rem;
  font-size: 0.9rem;
  color: var(--privacy-text-secondary);
}
.contact-note a {
  color: var(--color-accent, #FF6B35);
  text-decoration: none;
}
.contact-note a:hover {
  text-decoration: underline;
}

/* ---- 底部操作区 ---- */
.privacy-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--privacy-divider);
}
.privacy-actions .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.5rem;
  font-family: var(--font-nav, "Inter", "Noto Sans SC", system-ui, sans-serif);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-radius: 12px;
  transition: background var(--transition, 0.25s ease), color var(--transition, 0.25s ease), box-shadow var(--transition, 0.25s ease);
  cursor: pointer;
}
.privacy-actions .btn-outline {
  background: transparent;
  border: 1.5px solid var(--color-accent, #FF6B35);
  color: var(--color-accent, #FF6B35);
}
.privacy-actions .btn-outline:hover,
.privacy-actions .btn-outline:focus-visible {
  background: rgba(255, 107, 53, 0.12);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.20);
  outline: none;
}
.privacy-actions .btn-accent {
  background: var(--color-accent, #FF6B35);
  border: 1.5px solid var(--color-accent, #FF6B35);
  color: var(--color-text-light, #FFFFFF);
}
.privacy-actions .btn-accent:hover,
.privacy-actions .btn-accent:focus-visible {
  background: var(--color-accent-hover, #FF8C00);
  border-color: var(--color-accent-hover, #FF8C00);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.25);
  outline: none;
}

/* ===== 响应式增强 ===== */

/* 平板及以上：>= 640px */
@media (min-width: 640px) {
  .privacy-container {
    padding: 2rem 1.5rem 3.5rem;
  }
  .privacy-title {
    font-size: 2.2rem;
  }
  .section-heading {
    font-size: 1.5rem;
  }
  .clause {
    font-size: 1rem;
  }
  .privacy-intro {
    font-size: 1.1rem;
    padding: 1.5rem 2rem;
  }
  .privacy-actions {
    flex-direction: row;
  }
}

/* 桌面端：>= 1024px — 启用侧边栏 */
@media (min-width: 1024px) {
  .privacy-container {
    padding: 2.5rem 2rem 4rem;
  }
  .privacy-layout {
    flex-direction: row;
    align-items: flex-start;
    gap: 2.5rem;
  }

  /* 隐藏移动端折叠，显示桌面端固定目录 */
  .toc-mobile {
    display: none;
  }
  .toc-desktop {
    display: block;
    position: sticky;
    top: calc(var(--header-scroll-height, 64px) + 1.5rem);
    width: var(--privacy-toc-width);
    flex-shrink: 0;
    background: var(--privacy-card-bg);
    border: 1px solid var(--privacy-border);
    border-radius: var(--privacy-radius-sm);
    padding: 1.25rem 0;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
  }
  .toc-heading {
    font-family: var(--font-heading, "Montserrat", "Noto Sans SC", system-ui, sans-serif);
    font-size: 0.8rem;
    font-weight: 700;
    font-style: italic;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--privacy-text-secondary);
    padding: 0 1.25rem 0.75rem;
    margin: 0;
    border-bottom: 1px solid var(--privacy-border);
  }
  .toc-desktop .toc-list {
    list-style: none;
    padding: 0.75rem 1.25rem 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
  }
  .toc-desktop .toc-list a {
    display: block;
    padding: 0.55rem 0.75rem;
    color: var(--color-text-light, #FFFFFF);
    text-decoration: none;
    font-size: 0.88rem;
    font-family: var(--font-nav, "Inter", "Noto Sans SC", system-ui, sans-serif);
    font-weight: 500;
    border-radius: 6px;
    border-left: 3px solid transparent;
    transition: background var(--transition, 0.25s ease), color var(--transition, 0.25s ease), border-color var(--transition, 0.25s ease);
  }
  .toc-desktop .toc-list a:hover,
  .toc-desktop .toc-list a:focus-visible {
    background: rgba(255, 107, 53, 0.10);
    color: var(--color-accent, #FF6B35);
    border-left-color: var(--color-accent, #FF6B35);
    outline: none;
  }

  /* 主内容填充剩余宽度 */
  .privacy-main {
    max-width: calc(100% - var(--privacy-toc-width) - 2.5rem);
  }
  .privacy-title {
    font-size: 2.5rem;
  }
  .section-heading {
    font-size: 1.65rem;
  }
  .clause {
    font-size: 1.05rem;
  }
}

/* 大屏：>= 1280px 提升阅读舒适度 */
@media (min-width: 1280px) {
  .privacy-container {
    padding: 3rem 2rem 5rem;
  }
  .privacy-layout {
    gap: 3.5rem;
  }
  .privacy-main {
    max-width: calc(100% - var(--privacy-toc-width) - 3.5rem);
  }
  .privacy-title {
    font-size: 2.8rem;
  }
  .privacy-intro {
    font-size: 1.15rem;
    padding: 1.75rem 2.25rem;
  }
  .clause {
    font-size: 1.05rem;
    line-height: 1.85;
  }
  .section-body {
    gap: 1rem;
  }
}

/* ---- 焦点与无障碍 ---- */
.page-privacy a:focus-visible,
.page-privacy .btn:focus-visible,
.page-privacy .toc-summary:focus-visible {
  outline: 2px solid var(--color-accent, #FF6B35);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---- 打印支持 ---- */
@media print {
  .page-privacy {
    background: #fff;
    color: #000;
  }
  .privacy-banner,
  .privacy-toc,
  .privacy-actions {
    display: none;
  }
  .privacy-container {
    max-width: 100%;
    padding: 0;
  }
  .privacy-main {
    max-width: 100%;
  }
  .privacy-title {
    color: #000;
  }
  .section-heading {
    color: #000;
  }
  .clause-num,
  .tooltip {
    color: #333;
    border-bottom: none;
  }
  .privacy-divider {
    background: #ccc;
  }
  .breadcrumb a {
    color: #333;
  }
}