.page-privacy *,
.page-privacy *::before,
.page-privacy *::after {
  box-sizing: border-box;
}

.page-privacy {
  background: var(--color-surface);
  color: var(--color-ink);
}

/* ---------- 顶部氛围图 ---------- */

.page-privacy .privacy-visual {
  margin: 0;
  position: relative;
  overflow: hidden;
  background: var(--color-contrast-surface);
  aspect-ratio: 16 / 9;
  max-height: 340px;
}

.page-privacy .privacy-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.42;
  filter: saturate(0.35) contrast(1.05);
}

.page-privacy .privacy-visual::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
  pointer-events: none;
}

/* ---------- 首屏 ---------- */

.page-privacy .privacy-lead {
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-privacy .privacy-lead .breadcrumb {
  padding-top: var(--space-3);
}

.page-privacy .privacy-lead__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-3);
  padding-top: var(--space-6);
  padding-bottom: var(--space-8);
}

.page-privacy .privacy-lead__kicker {
  margin: 0 0 var(--space-3);
  color: var(--color-ink-muted);
}

.page-privacy .privacy-lead__title {
  margin: 0 0 var(--space-4);
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  max-width: 18ch;
}

.page-privacy .privacy-lead__intro {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-privacy .privacy-meta {
  margin: 0;
  display: grid;
  gap: var(--space-3);
}

.page-privacy .privacy-meta__item {
  display: grid;
  gap: calc(var(--space-1) / 2);
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-privacy .privacy-meta dt {
  margin: 0;
  color: var(--color-ink-muted);
}

.page-privacy .privacy-meta dd {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 条款正文 ---------- */

.page-privacy .privacy-doc__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
}

.page-privacy .clause {
  padding-top: var(--space-6);
  padding-bottom: var(--space-6);
  border-top: var(--border-thin) solid var(--color-line);
  scroll-margin-top: 96px;
}

.page-privacy .clause:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-privacy .clause__head {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.page-privacy .clause__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--color-primary);
  font-variant-numeric: tabular-nums;
}

.page-privacy .clause__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-privacy .clause__head::after {
  content: attr(data-scope);
  position: absolute;
  left: 0;
  top: calc(100% + var(--space-1));
  z-index: 5;
  max-width: 34ch;
  padding: var(--space-1) var(--space-2);
  background: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-body);
  line-height: 1.5;
  letter-spacing: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity 140ms ease-out;
}

.page-privacy .clause__body p {
  margin: 0 0 var(--space-3);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-privacy .clause__body p:last-child {
  margin-bottom: 0;
}

.page-privacy .clause__list {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: var(--measure);
  display: grid;
  gap: var(--space-2);
}

.page-privacy .clause__list li {
  position: relative;
  padding-left: var(--space-4);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-privacy .clause__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: var(--space-1);
  height: var(--border-thin);
  background: var(--color-primary);
}

.page-privacy .clause__list a,
.page-privacy .clause__body a {
  color: var(--color-ink);
  text-decoration: none;
  border-bottom: var(--border-thin) solid var(--color-primary);
  transition: color 140ms ease-out;
}

.page-privacy .clause__list a:hover,
.page-privacy .clause__body a:hover,
.page-privacy .clause__list a:focus-visible,
.page-privacy .clause__body a:focus-visible {
  color: var(--color-primary);
}

.page-privacy .clause__list .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--color-ink);
}

/* ---------- 侧栏条款索引 ---------- */

.page-privacy .privacy-rail__nav {
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-privacy .privacy-rail__label {
  margin: 0 0 var(--space-3);
  color: var(--color-ink-muted);
}

.page-privacy .privacy-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: calc(var(--space-1) / 2);
}

.page-privacy .privacy-toc__link {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  padding: var(--space-1) 0;
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  text-decoration: none;
  border-bottom: var(--border-thin) solid transparent;
  transition: color 140ms ease-out, border-color 140ms ease-out;
}

.page-privacy .privacy-toc__link .mono {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-variant-numeric: tabular-nums;
  color: var(--color-ink-muted);
  transition: color 140ms ease-out;
}

.page-privacy .privacy-toc__link:hover,
.page-privacy .privacy-toc__link:focus-visible {
  color: var(--color-ink);
  border-bottom-color: var(--color-primary);
}

.page-privacy .privacy-toc__link:hover .mono,
.page-privacy .privacy-toc__link:focus-visible .mono {
  color: var(--color-primary);
}

/* ---------- 桌面端 ---------- */

@media (min-width: 900px) {
  .page-privacy .privacy-lead__grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    column-gap: var(--space-6);
    align-items: end;
  }

  .page-privacy .privacy-lead__aside {
    padding-left: var(--space-6);
    border-left: var(--border-thin) solid var(--color-line);
  }

  .page-privacy .privacy-doc__grid {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
    column-gap: var(--space-6);
  }

  .page-privacy .privacy-rail {
    align-self: start;
    position: sticky;
    top: var(--space-6);
    padding-left: var(--space-6);
    border-left: var(--border-thin) solid var(--color-line);
  }

  .page-privacy .privacy-rail__nav {
    padding-top: 0;
    border-top: 0;
  }

  .page-privacy .clause__head:hover::after,
  .page-privacy .clause__head:focus-within::after {
    opacity: 1;
  }

  .page-privacy .clause__head:hover .clause__num {
    color: var(--color-accent);
  }
}

@media (min-width: 1200px) {
  .page-privacy .privacy-lead__title {
    font-size: var(--text-4xl);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .clause__head::after,
  .page-privacy .clause__num,
  .page-privacy .clause__list a,
  .page-privacy .privacy-toc__link {
    transition: none;
  }
}