/* privacy page – 文档式单列/双栏布局 */
.page-privacy {
  --privacy-nav-width: 220px;
  color: var(--text-primary);
  line-height: 1.7;
}

/* 标题 */
.page-privacy__title {
  font: var(--font-heading);
  font-weight: 700;
  font-style: italic;
  font-size: clamp(2rem, 6vw, 3rem);
  margin: 1rem 0 0.5rem;
  color: var(--primary);
  letter-spacing: -0.02em;
}

.page-privacy__intro {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  max-width: 720px;
}

/* 占位图片 */
.hero-img-wrapper {
  margin: 1.5rem 0 2rem;
  overflow: hidden;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.hero-img-wrapper img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* 布局容器（移动端默认单列） */
.privacy-layout {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* 左侧导航（移动端在上） */
.privacy-nav {
  order: -1;
}

.privacy-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.2rem;
}

.privacy-nav li {
  margin: 0;
}

.privacy-nav a {
  color: var(--primary);
  font-weight: 600;
  text-decoration: none;
  padding: 0.25rem 0;
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.privacy-nav a:hover,
.privacy-nav a:focus-visible {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* 右侧内容 */
.privacy-content {
  min-width: 0;
  flex: 1;
}

.privacy-content section {
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
}

.privacy-content h2 {
  font: var(--font-heading);
  font-weight: 700;
  font-size: 1.5rem;
  margin: 0 0 1rem;
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.privacy-content h2 .num {
  color: var(--primary);
  font-size: 1.2rem;
  font-weight: 700;
  background: var(--bg-light);
  padding: 0 0.4rem;
  border-radius: var(--radius-sm);
}

.privacy-content p {
  margin: 0.5rem 0;
  line-height: 1.7;
}

.privacy-content .highlight {
  color: var(--primary);
  font-weight: 700;
}

.privacy-content .contact-note {
  background: var(--bg-light);
  padding: 1rem 1.2rem;
  border-radius: var(--radius-md);
  margin-top: 0.5rem;
}

.additional-link {
  margin-top: 2rem;
  font-size: 0.95rem;
}

.additional-link a {
  color: var(--primary);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition);
}

.additional-link a:hover,
.additional-link a:focus-visible {
  color: var(--accent);
}

/* 桌面端：左右并排，导航固定 */
@media (min-width: 768px) {
  .privacy-layout {
    flex-direction: row;
    gap: 3rem;
  }

  .privacy-nav {
    order: unset;
    flex-shrink: 0;
    width: var(--privacy-nav-width);
    position: sticky;
    top: 1.5rem;
    align-self: flex-start;
    max-height: calc(100vh - 3rem);
    overflow-y: auto;
  }

  .privacy-nav ul {
    flex-direction: column;
    gap: 0.25rem;
  }

  .privacy-nav a {
    white-space: normal;
    display: block;
    padding: 0.4rem 0.6rem;
    border-bottom: none;
    border-left: 3px solid transparent;
    transition: color var(--transition), border-color var(--transition), background var(--transition);
  }

  .privacy-nav a:hover,
  .privacy-nav a:focus-visible {
    background: var(--bg-light);
    border-left-color: var(--accent);
  }

  .privacy-content h2 {
    font-size: 1.6rem;
  }

  .privacy-content h2 .num {
    font-size: 1.3rem;
  }
}

/* 大屏优化 */
@media (min-width: 1024px) {
  .privacy-nav {
    --privacy-nav-width: 240px;
    top: 2rem;
  }

  .privacy-content {
    max-width: 800px;
  }
}

/* 图片适配宽屏 */
@media (max-width: 480px) {
  .hero-img-wrapper img {
    border-radius: var(--radius-sm);
  }
}