.page-privacy {
  --privacy-hero-bg: linear-gradient(135deg, #0A0C1A 0%, #0F1225 50%, #0A0C1A 100%);
  --privacy-card-bg: #1A1F2E;
  --privacy-card-border: #2D354A;
  --privacy-accent-line: #00E5FF;
  --privacy-accent-glow: rgba(0, 229, 255, 0.12);
  --privacy-text-muted: #8C9CAB;
  --privacy-text-body: #D0D5E0;
  --privacy-radius: 12px;
  --privacy-nav-width: 220px;
  --privacy-content-gap: 40px;
  --privacy-heading-font: 'Exo 2', 'Orbitron', system-ui, sans-serif;
  --privacy-body-font: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;

  display: flex;
  flex-direction: column;
  background-color: var(--color-bg, #0B0D17);
  color: var(--color-text-primary, #F0F4F8);
  font-family: var(--privacy-body-font);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== Hero 区域 ===== */
.privacy-hero {
  background: var(--privacy-hero-bg);
  padding: 28px 24px 18px;
  border-bottom: 1px solid var(--privacy-card-border);
  position: relative;
  overflow: hidden;
}
.privacy-hero::before {
  content: '';
  position: absolute;
  top: -60%;
  right: -10%;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.06) 0%, transparent 70%);
  pointer-events: none;
}
.privacy-breadcrumb {
  font-size: 0.8rem;
  color: var(--privacy-text-muted);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
  letter-spacing: 0.3px;
  font-family: var(--privacy-body-font);
}
.privacy-breadcrumb a {
  color: var(--privacy-text-muted);
  text-decoration: none;
  transition: color 0.2s;
}
.privacy-breadcrumb a:hover {
  color: var(--color-accent);
}
.privacy-breadcrumb-sep {
  color: var(--privacy-text-muted);
  font-size: 0.7rem;
}
.privacy-breadcrumb [aria-current="page"] {
  color: var(--color-text-primary);
  font-weight: 500;
}
.privacy-hero-content {
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  z-index: 1;
}
.privacy-hero-text {
  flex: 1;
}
.privacy-hero-title {
  font-family: var(--privacy-heading-font);
  font-size: clamp(1.8rem, 4.5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0 0 6px;
  background: linear-gradient(135deg, var(--color-text-primary) 40%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.privacy-hero-subtitle {
  font-size: clamp(0.85rem, 1.4vw, 1.05rem);
  color: var(--privacy-text-muted);
  margin: 0;
  font-weight: 400;
  letter-spacing: 0.4px;
  font-family: var(--privacy-body-font);
}
.privacy-hero-visual {
  position: relative;
  width: 100%;
  max-width: 1200px;
  border-radius: var(--privacy-radius);
  overflow: hidden;
  border: 1px solid var(--privacy-card-border);
  background: #0F1225;
  aspect-ratio: 1200 / 200;
}
.privacy-hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 0.7;
}
.privacy-hero-svg {
  position: absolute;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  width: clamp(80px, 12vw, 160px);
  height: clamp(80px, 12vw, 160px);
  opacity: 0.35;
  pointer-events: none;
}
.privacy-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(45, 53, 74, 0.5);
  font-size: 0.78rem;
  color: var(--privacy-text-muted);
  position: relative;
  z-index: 1;
}
.privacy-hero-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  letter-spacing: 0.2px;
}
.privacy-hero-meta-item::before {
  content: '◆';
  color: var(--color-accent);
  font-size: 0.5rem;
  opacity: 0.6;
}

/* ===== 主体布局 ===== */
.privacy-body {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 1360px;
  margin: 0 auto;
  width: 100%;
  padding: 0 16px 60px;
  position: relative;
}

/* ===== 侧边导航 ===== */
.privacy-nav {
  order: -1;
  width: 100%;
  margin-bottom: 28px;
  padding: 20px 0 12px;
  border-bottom: 1px solid var(--privacy-card-border);
  position: relative;
  flex-shrink: 0;
}
.privacy-nav-title {
  font-family: var(--privacy-heading-font);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin: 0 0 12px;
  opacity: 0.8;
}
.privacy-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
}
.privacy-nav-link {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--privacy-text-muted);
  text-decoration: none;
  transition: all 0.25s ease;
  border: 1px solid transparent;
  background: transparent;
  font-family: var(--privacy-body-font);
  letter-spacing: 0.2px;
  white-space: nowrap;
}
.privacy-nav-link:hover {
  color: var(--color-accent);
  border-color: rgba(0, 229, 255, 0.25);
  background: rgba(0, 229, 255, 0.05);
}
.privacy-nav-link:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 20px;
}
/* 利用 :target 伪类实现点击高亮 —— 通过通用兄弟选择器无法反向影响导航，故配合 JS 或锚点自身 :focus 反馈 */
/* 由于纯CSS无法根据滚动自动高亮，我们依赖 :focus 以及内容区 :target 样式 */
.privacy-nav-link:focus {
  color: var(--color-accent);
  background: rgba(0, 229, 255, 0.1);
  border-color: rgba(0, 229, 255, 0.3);
}
.privacy-nav-decoration {
  display: none;
}

/* ===== 内容区域 ===== */
.privacy-content {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 48px;
}

/* ===== 章节通用 ===== */
.privacy-section {
  scroll-margin-top: 24px;
  position: relative;
  padding-left: 0;
  border-left: none;
}
.privacy-section::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--color-accent), rgba(0, 229, 255, 0.1));
  border-radius: 4px;
  opacity: 0.3;
  transition: opacity 0.4s;
}
.privacy-section:target::before {
  opacity: 1;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-accent-bright));
}
.privacy-section:target {
  border-left: none;
}
.privacy-section:target .privacy-section-heading .privacy-section-title {
  color: var(--color-accent);
}
.privacy-section-heading {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 12px;
  padding-left: 16px;
}
.privacy-section-num {
  font-family: var(--privacy-heading-font);
  font-size: clamp(1.2rem, 2.2vw, 1.8rem);
  font-weight: 700;
  color: var(--color-accent);
  opacity: 0.4;
  line-height: 1;
  letter-spacing: -0.03em;
  flex-shrink: 0;
}
.privacy-section-title {
  font-family: var(--privacy-heading-font);
  font-size: clamp(1.3rem, 2.8vw, 1.75rem);
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.2;
  letter-spacing: -0.01em;
  transition: color 0.3s;
}
.privacy-section-intro {
  font-size: 0.95rem;
  color: var(--privacy-text-body);
  margin: 0 0 20px 16px;
  padding: 0;
  max-width: 720px;
  line-height: 1.7;
}

/* ===== 列表样式 ===== */
.privacy-list {
  list-style: none;
  margin: 0 0 16px 16px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.privacy-list-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 20px;
  background: var(--privacy-card-bg);
  border-radius: var(--privacy-radius);
  border: 1px solid var(--privacy-card-border);
  transition: border-color 0.25s, box-shadow 0.25s;
}
.privacy-list-item:hover {
  border-color: rgba(0, 229, 255, 0.2);
  box-shadow: 0 4px 20px rgba(0, 229, 255, 0.04);
}
.privacy-list-label {
  font-family: var(--privacy-heading-font);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-primary);
  letter-spacing: 0.2px;
}
.privacy-list-desc {
  font-size: 0.88rem;
  color: var(--privacy-text-body);
  line-height: 1.6;
}

/* ===== Details 折叠 ===== */
.privacy-details {
  margin-top: 6px;
  font-size: 0.85rem;
  color: var(--privacy-text-muted);
}
.privacy-details-summary {
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
  color: var(--color-accent);
  padding: 2px 0;
  border-bottom: 1px dashed rgba(0, 229, 255, 0.25);
  transition: border-color 0.2s;
  user-select: none;
  font-family: var(--privacy-body-font);
  font-size: 0.82rem;
}
.privacy-details-summary:hover {
  border-bottom-color: var(--color-accent);
}
.privacy-details-summary::marker {
  color: var(--color-accent);
  font-size: 0.75em;
}
.privacy-details-body {
  margin-top: 8px;
  padding: 12px 16px;
  background: rgba(0, 229, 255, 0.04);
  border-radius: 8px;
  border-left: 2px solid var(--color-accent);
  color: var(--privacy-text-body);
  font-size: 0.85rem;
  line-height: 1.6;
}
.privacy-details-body p {
  margin: 0;
}

/* ===== 通知条 ===== */
.privacy-notice {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin: 12px 0 0 16px;
  padding: 12px 16px;
  background: rgba(0, 229, 255, 0.04);
  border-radius: 8px;
  border-left: 3px solid var(--color-accent);
  font-size: 0.85rem;
  color: var(--privacy-text-body);
  line-height: 1.5;
}
.privacy-notice--strong {
  border-left-color: var(--color-accent-bright);
  background: rgba(0, 229, 255, 0.06);
}
.privacy-notice-icon {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--color-accent);
  width: 18px;
  height: 18px;
}
.privacy-notice strong {
  color: var(--color-text-primary);
  font-weight: 600;
}

/* ===== 使用目的网格 ===== */
.privacy-purpose-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 0 0 0 16px;
}
.privacy-purpose-card {
  padding: 20px 20px 16px;
  background: var(--privacy-card-bg);
  border-radius: var(--privacy-radius);
  border: 1px solid var(--privacy-card-border);
  transition: border-color 0.25s, transform 0.2s;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.privacy-purpose-card:hover {
  border-color: rgba(0, 229, 255, 0.2);
  transform: translateY(-2px);
}
.privacy-purpose-icon {
  width: 40px;
  height: 40px;
  margin-bottom: 2px;
}
.privacy-purpose-title {
  font-family: var(--privacy-heading-font);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0;
  letter-spacing: 0.2px;
}
.privacy-purpose-text {
  font-size: 0.88rem;
  color: var(--privacy-text-body);
  margin: 0;
  line-height: 1.6;
}
.privacy-purpose-card .privacy-details {
  margin-top: 4px;
}

/* ===== 共享列表 ===== */
.privacy-sharing-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin: 0 0 16px 16px;
}
.privacy-sharing-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px 20px;
  background: var(--privacy-card-bg);
  border-radius: var(--privacy-radius);
  border: 1px solid var(--privacy-card-border);
  transition: border-color 0.25s;
}
.privacy-sharing-item:hover {
  border-color: rgba(0, 229, 255, 0.2);
}
.privacy-sharing-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  opacity: 0.7;
}
.privacy-sharing-content {
  flex: 1;
  min-width: 0;
}
.privacy-sharing-title {
  font-family: var(--privacy-heading-font);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0 0 4px;
  letter-spacing: 0.2px;
}
.privacy-sharing-text {
  font-size: 0.88rem;
  color: var(--privacy-text-body);
  margin: 0;
  line-height: 1.6;
}

/* ===== 用户权利网格 ===== */
.privacy-rights-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 0 0 0 16px;
}
.privacy-rights-card {
  padding: 20px 20px 16px;
  background: var(--privacy-card-bg);
  border-radius: var(--privacy-radius);
  border: 1px solid var(--privacy-card-border);
  transition: border-color 0.25s, transform 0.2s;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.privacy-rights-card:hover {
  border-color: rgba(0, 229, 255, 0.2);
  transform: translateY(-2px);
}
.privacy-rights-card-icon {
  width: 48px;
  height: 48px;
  margin-bottom: 4px;
  opacity: 0.7;
}
.privacy-rights-card-title {
  font-family: var(--privacy-heading-font);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin: 0;
  letter-spacing: 0.2px;
}
.privacy-rights-card-text {
  font-size: 0.88rem;
  color: var(--privacy-text-body);
  margin: 0;
  line-height: 1.6;
}
.privacy-rights-card .privacy-details {
  margin-top: 4px;
}

/* ===== 联系块 ===== */
.privacy-contact-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin: 0 0 16px 16px;
  padding: 20px;
  background: var(--privacy-card-bg);
  border-radius: var(--privacy-radius);
  border: 1px solid var(--privacy-card-border);
}
.privacy-contact-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.privacy-contact-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--privacy-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  font-family: var(--privacy-heading-font);
}
.privacy-contact-value {
  font-size: 0.92rem;
  color: var(--color-text-primary);
  font-weight: 500;
  word-break: break-all;
}
.privacy-contact-value a {
  color: var(--color-accent);
  text-decoration: none;
  transition: opacity 0.2s;
}
.privacy-contact-value a:hover {
  opacity: 0.8;
  text-decoration: underline;
}

/* ===== 页脚注 ===== */
.privacy-footer-note {
  margin: 24px 0 0 16px;
  padding: 20px 0 0;
  border-top: 1px solid var(--privacy-card-border);
  text-align: left;
  font-size: 0.82rem;
  color: var(--privacy-text-muted);
  line-height: 1.8;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.privacy-footer-note p {
  margin: 0;
}
.privacy-footer-note a {
  color: var(--color-accent);
  text-decoration: none;
  transition: opacity 0.2s;
}
.privacy-footer-note a:hover {
  opacity: 0.8;
  text-decoration: underline;
}

/* ============================================ */
/* 桌面端 ≥768px */
/* ============================================ */
@media (min-width: 768px) {
  .privacy-hero {
    padding: 36px 40px 22px;
  }
  .privacy-hero-content {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
  .privacy-hero-visual {
    width: 55%;
    max-width: 680px;
    aspect-ratio: auto;
    height: auto;
    min-height: 120px;
  }
  .privacy-hero-meta {
    margin-top: 18px;
    padding-top: 18px;
  }

  .privacy-body {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--privacy-content-gap);
    padding: 40px 40px 80px;
  }

  /* 侧边导航 — 桌面竖排 */
  .privacy-nav {
    order: 0;
    width: var(--privacy-nav-width);
    min-width: var(--privacy-nav-width);
    margin-bottom: 0;
    padding: 0;
    border-bottom: none;
    position: sticky;
    top: 100px;
    z-index: 10;
  }
  .privacy-nav-title {
    margin-bottom: 16px;
  }
  .privacy-nav-list {
    flex-direction: column;
    gap: 4px;
  }
  .privacy-nav-link {
    white-space: normal;
    padding: 8px 14px;
    border-radius: 8px;
    font-size: 0.85rem;
    border: 1px solid transparent;
    background: transparent;
    width: 100%;
  }
  .privacy-nav-link:hover {
    background: rgba(0, 229, 255, 0.06);
    border-color: rgba(0, 229, 255, 0.15);
  }
  .privacy-nav-link:focus {
    background: rgba(0, 229, 255, 0.1);
    border-color: rgba(0, 229, 255, 0.3);
  }
  .privacy-nav-decoration {
    display: block;
    margin-top: 20px;
    position: relative;
    height: 60px;
  }
  .privacy-nav-dot {
    display: block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-accent);
    opacity: 0.3;
    margin-bottom: 8px;
  }
  .privacy-nav-line {
    display: block;
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-accent), transparent);
    opacity: 0.2;
  }

  .privacy-content {
    gap: 56px;
  }

  .privacy-section {
    padding-left: 0;
  }
  .privacy-section::before {
    left: 0;
    width: 3px;
  }
  .privacy-section-heading {
    padding-left: 20px;
  }
  .privacy-section-intro {
    margin-left: 20px;
  }
  .privacy-list,
  .privacy-purpose-grid,
  .privacy-sharing-list,
  .privacy-rights-grid,
  .privacy-contact-block,
  .privacy-notice,
  .privacy-footer-note {
    margin-left: 20px;
  }

  .privacy-purpose-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .privacy-rights-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .privacy-contact-block {
    grid-template-columns: repeat(2, 1fr);
  }
  .privacy-footer-note {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px 24px;
    justify-content: space-between;
  }
}

/* ============================================ */
/* 大桌面 ≥1200px */
/* ============================================ */
@media (min-width: 1200px) {
  .privacy-hero {
    padding: 44px 60px 26px;
  }
  .privacy-body {
    padding: 48px 60px 100px;
    gap: 60px;
  }
  .privacy-nav {
    --privacy-nav-width: 240px;
    min-width: 240px;
    top: 110px;
  }
  .privacy-purpose-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .privacy-rights-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .privacy-contact-block {
    grid-template-columns: repeat(4, 1fr);
  }
  .privacy-section-intro {
    max-width: 800px;
  }
}