/* ===== 数据与隐私页面专属样式 ===== */
.page-privacy {
  --privacy-gold: var(--color-gold);
  --privacy-crimson: var(--color-crimson);
  --privacy-dark: var(--color-dark);
  --privacy-gray: var(--color-gray);
  --privacy-white: var(--color-white);
  --privacy-dull-gold: var(--color-dull-gold);
  --privacy-silver: var(--color-silver);
  --privacy-gradient: var(--color-gold-gradient);
  --privacy-font-heading: var(--font-heading);
  --privacy-font-body: var(--font-body);
  --privacy-radius-pill: var(--radius-pill);
  --privacy-transition: var(--transition);
  --privacy-header-height: var(--header-height);
}

.page-privacy .breadcrumb {
  margin-bottom: 1.5rem;
  font-size: 0.875rem;
  color: var(--privacy-silver);
}

.page-privacy .breadcrumb a {
  color: var(--privacy-dull-gold);
  transition: color var(--privacy-transition);
}

.page-privacy .breadcrumb a:hover,
.page-privacy .breadcrumb a:focus {
  color: var(--privacy-gold);
}

.page-privacy .breadcrumb__current {
  color: var(--privacy-white);
}

/* ＝主页标题区 */
.page-privacy__hero {
  margin-bottom: 2rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  max-width: 100%;
}

.page-privacy__hero-img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.page-privacy__title {
  font-family: var(--privacy-font-heading);
  font-size: clamp(1.75rem, 5vw, 3rem);
  font-weight: 900;
  background: var(--privacy-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-top: 0;
  margin-bottom: 0.75rem;
  line-height: 1.2;
}

.page-privacy__intro {
  font-family: var(--privacy-font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--privacy-silver);
  margin-bottom: 2.5rem;
  max-width: 70ch;
}

/* ＝布局：左侧导航 + 右侧手风琴 */
.page-privacy__layout {
  display: grid;
  grid-template-columns: 1fr 3fr;
  gap: 2.5rem;
  align-items: start;
}

/* ＝左侧导航（桌面 sticky） */
.page-privacy__nav {
  position: sticky;
  top: calc(var(--privacy-header-height) + 1.5rem);
}

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

.page-privacy__nav-link {
  display: block;
  padding: 0.6rem 1rem;
  border-radius: var(--privacy-radius-pill);
  font-family: var(--privacy-font-body);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--privacy-white);
  text-decoration: none;
  background-color: transparent;
  border: 1px solid var(--privacy-silver);
  transition: background-color var(--privacy-transition), border-color var(--privacy-transition);
}

.page-privacy__nav-link:hover,
.page-privacy__nav-link:focus {
  background-color: var(--privacy-gray);
  border-color: var(--privacy-gold);
  color: var(--privacy-gold);
}

/* ＝右侧手风琴区 */
.page-privacy__content {
  min-width: 0;
}

.page-privacy__section {
  margin-bottom: 1.5rem;
}

/* details 基重置 */
.page-privacy__details {
  display: block;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background-color: var(--privacy-gray);
  transition: border-color var(--privacy-transition);
  overflow: hidden;
}

.page-privacy__details[open] {
  border-color: var(--privacy-gold);
}

/* summary 标题样式 */
.page-privacy__section-title {
  display: block;
  cursor: pointer;
  padding: 1rem 1.25rem;
  font-family: var(--privacy-font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--privacy-white);
  background-color: transparent;
  border-bottom: 2px solid var(--privacy-dull-gold);
  transition: background-color var(--privacy-transition), border-color var(--privacy-transition);
  position: relative;
  list-style: none; /* 移除默认三角 */
}

.page-privacy__section-title::-webkit-details-marker {
  display: none;
}

.page-privacy__section-title::after {
  content: "▾";
  position: absolute;
  right: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.2rem;
  color: var(--privacy-gold);
  transition: transform var(--privacy-transition);
}

.page-privacy__details[open] .page-privacy__section-title::after {
  transform: translateY(-50%) rotate(180deg);
}

.page-privacy__section-title:hover,
.page-privacy__section-title:focus-visible {
  background-color: rgba(212, 175, 55, 0.1);
  border-bottom-color: var(--privacy-gold);
}

/* 内容体 */
.page-privacy__section-body {
  padding: 1rem 1.25rem 1.25rem;
  font-family: var(--privacy-font-body);
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--privacy-silver);
}

.page-privacy__section-body p {
  margin: 0 0 0.75rem;
}

.page-privacy__section-body p:last-child {
  margin-bottom: 0;
}

/* 高亮金色 */
.highlight-gold {
  color: var(--privacy-gold);
  font-weight: 700;
}

/* 内部链接 */
.page-privacy__link {
  color: var(--privacy-gold);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: opacity var(--privacy-transition);
}

.page-privacy__link:hover,
.page-privacy__link:focus {
  opacity: 0.8;
}

/* ＝移动端适配 */
@media (max-width: 768px) {
  .page-privacy__layout {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .page-privacy__nav {
    position: static;
    margin-bottom: 0.5rem;
  }

  .page-privacy__nav-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.4rem;
  }

  .page-privacy__nav-link {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
  }

  .page-privacy__section-title {
    font-size: 1rem;
    padding: 0.75rem 1rem;
  }

  .page-privacy__section-title::after {
    right: 1rem;
  }

  .page-privacy__section-body {
    padding: 0.75rem 1rem 1rem;
    font-size: 0.9rem;
  }

  .page-privacy__hero {
    margin-bottom: 1.5rem;
  }

  .page-privacy__intro {
    margin-bottom: 1.5rem;
  }
}

/* 确保窄屏不横向溢出 */
@media (max-width: 480px) {
  .page-privacy__inner {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
  }
}