.page-privacy {
  --privacy-sidebar-w: 240px;
  --privacy-gap: var(--space-xl);
  --privacy-title-color: var(--clr-secondary);
  --privacy-accent-line: var(--clr-primary);
  display: block;
  background-color: var(--clr-bg-light);
  color: var(--clr-text);
  font-family: var(--font-body);
  line-height: 1.6;
  padding: var(--space-lg) 0 var(--space-xl);
}

/* 面包屑 */
.page-privacy .c-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 0.5rem;
  font-size: 0.85rem;
  color: var(--clr-text);
  opacity: 0.7;
  margin-bottom: var(--space-md);
}

.page-privacy .c-breadcrumb__link {
  color: var(--clr-link);
  text-decoration: none;
  transition: opacity var(--transition);
}

.page-privacy .c-breadcrumb__link:hover {
  opacity: 0.8;
  text-decoration: underline;
}

.page-privacy .c-breadcrumb__sep {
  color: var(--clr-border);
  user-select: none;
}

.page-privacy .c-breadcrumb__current {
  color: var(--clr-text);
  font-weight: 600;
}

/* 头部区域 */
.page-privacy__header {
  position: relative;
  padding: var(--space-md) 0 var(--space-lg);
  border-bottom: 2px solid var(--clr-primary);
  margin-bottom: var(--space-xl);
}

.page-privacy__title {
  font-family: var(--font-head);
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 900;
  color: var(--clr-secondary);
  margin: 0 0 var(--space-xs);
  line-height: 1.15;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.page-privacy__subtitle {
  font-size: clamp(0.95rem, 1.4vw, 1.1rem);
  color: var(--clr-text);
  opacity: 0.75;
  max-width: 640px;
  margin: 0;
  line-height: 1.6;
}

.page-privacy__header-deco {
  position: absolute;
  right: 0;
  bottom: var(--space-md);
  pointer-events: none;
  opacity: 0.6;
}

.page-privacy__wing-svg {
  display: block;
  width: 100px;
  height: auto;
}

/* 主布局：侧边栏 + 内容 */
.page-privacy__layout {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

/* 侧边栏 */
.page-privacy__sidebar {
  order: -1;
  width: 100%;
  flex-shrink: 0;
}

.page-privacy__toc {
  background-color: rgba(255,255,255,0.5);
  border: 1px solid var(--clr-border);
  border-left: 4px solid var(--clr-primary);
  border-radius: var(--radius-sm);
  padding: var(--space-md) var(--space-md);
}

.page-privacy__toc-title {
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--clr-secondary);
  margin: 0 0 var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.page-privacy__toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.page-privacy__toc-list li {
  margin: 0;
  padding: 0;
  counter-increment: toc-counter;
}

.page-privacy__toc-list li::before {
  content: counter(toc-counter) ".";
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--clr-primary);
  margin-right: 0.4rem;
}

.page-privacy__toc-list {
  counter-reset: toc-counter;
}

.page-privacy__toc-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--clr-secondary);
  text-decoration: none;
  transition: color var(--transition);
  border-bottom: 1px solid transparent;
}

.page-privacy__toc-link:hover,
.page-privacy__toc-link:focus {
  color: var(--clr-primary);
  border-bottom-color: var(--clr-primary);
}

.page-privacy__sidebar-img {
  display: none;
}

/* 内容区 */
.page-privacy__content {
  flex: 1;
  min-width: 0;
}

.page-privacy__section {
  margin-bottom: var(--space-xl);
  scroll-margin-top: 80px;
}

.page-privacy__section-title {
  font-family: var(--font-head);
  font-size: clamp(1.3rem, 2.5vw, 1.75rem);
  font-weight: 800;
  color: var(--clr-secondary);
  margin: 0 0 var(--space-sm);
  padding-bottom: var(--space-xs);
  border-bottom: 2px solid var(--clr-accent);
  display: inline-block;
  letter-spacing: 0.02em;
}

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

.page-privacy__section-body p {
  margin: 0 0 var(--space-sm);
}

.page-privacy__list {
  list-style: none;
  margin: var(--space-sm) 0 var(--space-md);
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.page-privacy__list li {
  position: relative;
  padding-left: 1.4rem;
  font-size: 0.95rem;
  line-height: 1.6;
}

.page-privacy__list li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--clr-primary);
  font-weight: 700;
}

.page-privacy__list li strong {
  font-weight: 700;
  color: var(--clr-secondary);
}

.page-privacy__note {
  font-size: 0.88rem;
  opacity: 0.7;
  background-color: rgba(211,47,47,0.04);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--clr-primary);
  margin-top: var(--space-sm);
}

.page-privacy__inline-link {
  color: var(--clr-link);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: opacity var(--transition);
}

.page-privacy__inline-link:hover {
  opacity: 0.8;
}

/* 底部 */
.page-privacy__footer {
  margin-top: var(--space-xl);
}

.page-privacy__hr {
  border: 0;
  border-top: 1px solid var(--clr-border);
  margin: 0 0 var(--space-md);
}

.page-privacy__footer-text {
  font-size: 0.85rem;
  color: var(--clr-text);
  opacity: 0.5;
  text-align: center;
  letter-spacing: 0.04em;
  font-weight: 400;
}

/* 移动端优先：默认单列 */
@media (max-width: 767px) {
  .page-privacy {
    padding: var(--space-md) 0 var(--space-lg);
  }

  .page-privacy__header {
    padding-bottom: var(--space-md);
    margin-bottom: var(--space-lg);
  }

  .page-privacy__header-deco {
    display: none;
  }

  .page-privacy__toc {
    padding: var(--space-sm) var(--space-md);
  }

  .page-privacy__toc-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.3rem 1rem;
  }

  .page-privacy__toc-list li {
    font-size: 0.9rem;
  }

  .page-privacy__toc-list li::before {
    font-size: 0.8rem;
  }

  .page-privacy__section {
    margin-bottom: var(--space-lg);
  }

  .page-privacy__list li {
    font-size: 0.9rem;
    padding-left: 1.2rem;
  }

  .page-privacy__note {
    font-size: 0.83rem;
    padding: var(--space-xs) var(--space-sm);
  }

  .page-privacy__sidebar-img {
    display: block;
    margin-top: var(--space-md);
    text-align: center;
  }

  .page-privacy__abstract {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    opacity: 0.3;
    mix-blend-mode: multiply;
  }
}

/* 桌面端：双栏布局 */
@media (min-width: 768px) {
  .page-privacy__layout {
    flex-direction: row;
    align-items: flex-start;
  }

  .page-privacy__sidebar {
    width: var(--privacy-sidebar-w);
    position: sticky;
    top: calc(var(--header-h) + var(--space-md));
    align-self: flex-start;
    order: 0;
  }

  .page-privacy__toc {
    padding: var(--space-md);
  }

  .page-privacy__toc-list {
    gap: 0.4rem;
  }

  .page-privacy__sidebar-img {
    display: block;
    margin-top: var(--space-lg);
    text-align: center;
  }

  .page-privacy__abstract {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
    opacity: 0.25;
    mix-blend-mode: multiply;
    transition: opacity var(--transition);
  }

  .page-privacy__abstract:hover {
    opacity: 0.45;
  }

  .page-privacy__content {
    max-width: calc(100% - var(--privacy-sidebar-w) - var(--privacy-gap));
  }

  .page-privacy__section-body {
    font-size: 1.05rem;
  }
}

/* 大桌面优化 */
@media (min-width: 1200px) {
  .page-privacy__sidebar {
    width: 280px;
  }

  .page-privacy__content {
    max-width: calc(100% - 280px - var(--privacy-gap));
  }
}

/* 滚动显现交互 */
.page-privacy__section[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  animation: privacyReveal 0.6s cubic-bezier(0.22,1,0.36,1) forwards;
}

.page-privacy__section[data-reveal]:nth-child(1) { animation-delay: 0.1s; }
.page-privacy__section[data-reveal]:nth-child(2) { animation-delay: 0.2s; }
.page-privacy__section[data-reveal]:nth-child(3) { animation-delay: 0.3s; }
.page-privacy__section[data-reveal]:nth-child(4) { animation-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
  .page-privacy__section[data-reveal] {
    opacity: 1;
    transform: none;
    animation: none;
  }
}

@keyframes privacyReveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 锚点跳转平滑 */
@media (prefers-reduced-motion: no-preference) {
  .page-privacy {
    scroll-behavior: smooth;
  }
}