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

/* ============ 顶部窄带 ============ */
.page-privacy .privacy-masthead {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-privacy .privacy-masthead__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.page-privacy .privacy-masthead__bg img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-privacy .privacy-masthead__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--overlay-scrim);
}

.page-privacy .privacy-masthead__inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  min-height: calc(var(--space-8) * 5);
  padding-block: var(--space-6) var(--space-8);
  justify-content: flex-end;
}

.page-privacy .privacy-masthead__crumb {
  margin-bottom: auto;
  color: var(--color-contrast-ink);
  opacity: 0.82;
}

.page-privacy .privacy-masthead__crumb a {
  color: var(--color-contrast-ink);
}

.page-privacy .privacy-masthead__eyebrow {
  color: var(--color-contrast-accent);
  margin: 0;
}

.page-privacy .privacy-masthead__title {
  margin: 0;
  max-width: 16ch;
  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-contrast-ink);
}

.page-privacy .privacy-masthead__lede {
  margin: 0;
  max-width: 62ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-contrast-ink);
  opacity: 0.94;
}

.page-privacy .privacy-masthead__meta {
  margin: 0;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.9;
  letter-spacing: 0.06em;
  color: var(--color-contrast-ink);
  opacity: 0.72;
  max-width: 70ch;
}

/* ============ 条款布局 ============ */
.page-privacy .privacy-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  padding-block: var(--space-6) var(--space-8);
}

/* ============ 索引窄栏 ============ */
.page-privacy .privacy-rail {
  border-top: var(--border-thin) solid var(--color-line);
  padding-top: var(--space-3);
}

.page-privacy .privacy-rail__caption {
  margin: 0 0 var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.page-privacy .privacy-rail__group + .privacy-rail__group {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-privacy .privacy-rail__group-title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  color: var(--color-ink-muted);
}

.page-privacy .privacy-rail__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1) var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-privacy .privacy-rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-sm);
  line-height: 1.4;
  color: var(--color-ink-soft);
  text-decoration: none;
  background-color: var(--color-surface-alt);
  border-radius: var(--radius-sm);
  transition: background-color 200ms cubic-bezier(0.2, 0.7, 0.2, 1),
              color 200ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

.page-privacy .privacy-rail__link:hover,
.page-privacy .privacy-rail__link:focus-visible {
  background-color: var(--color-primary);
  color: var(--color-primary-ink);
}

.page-privacy .privacy-rail__link:hover .privacy-rail__num,
.page-privacy .privacy-rail__link:focus-visible .privacy-rail__num {
  color: var(--color-primary-ink);
}

.page-privacy .privacy-rail__num {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-heading);
  letter-spacing: 0.04em;
  color: var(--color-primary);
}

/* ============ 条款正文 ============ */
.page-privacy .privacy-body {
  min-width: 0;
}

.page-privacy .privacy-clause {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
  padding-block: var(--space-6);
  border-bottom: var(--border-thin) solid var(--color-line);
  scroll-margin-top: var(--space-8);
}

.page-privacy .privacy-clause:first-child {
  border-top: var(--border-thin) solid var(--color-line);
}

.page-privacy .privacy-clause__num {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}

.page-privacy .privacy-clause__block {
  min-width: 0;
}

.page-privacy .privacy-clause__title {
  margin: 0 0 var(--space-2);
  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 .privacy-clause__text {
  margin: 0 0 var(--space-2);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-privacy .privacy-clause__text a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 0.22em;
}

.page-privacy .privacy-clause__list {
  margin: 0 0 var(--space-3);
  padding: 0;
  max-width: var(--measure);
  list-style: none;
}

.page-privacy .privacy-clause__list li {
  position: relative;
  padding: var(--space-2) 0 var(--space-2) var(--space-3);
  border-bottom: var(--border-thin) solid var(--color-line);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-privacy .privacy-clause__list li:first-child {
  border-top: var(--border-thin) solid var(--color-line);
}

.page-privacy .privacy-clause__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: calc(var(--space-2) + 0.72em);
  width: var(--space-1);
  height: var(--border-thick);
  background-color: var(--color-primary);
}

.page-privacy .privacy-clause__list strong {
  color: var(--color-ink);
  font-weight: var(--weight-heading);
}

.page-privacy .privacy-clause__list a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 0.22em;
}

.page-privacy .privacy-clause__note {
  margin: 0;
  max-width: var(--measure);
  padding: var(--space-2) var(--space-3);
  background-color: var(--color-primary-soft);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  line-height: 1.9;
  color: var(--color-ink);
}

.page-privacy .privacy-clause__note a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 0.22em;
}

.page-privacy .privacy-clause:nth-child(even) .privacy-clause__note {
  background-color: var(--color-surface-deep);
}

.page-privacy .privacy-clause:target {
  background-color: var(--color-primary-soft);
  padding-inline: var(--space-2);
  margin-inline: calc(var(--space-2) * -1);
}

/* ============ 尾部说明块 ============ */
.page-privacy .privacy-tail {
  color: var(--color-primary-ink);
}

.page-privacy .privacy-tail__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
}

.page-privacy .privacy-tail__title {
  margin: 0 0 var(--space-2);
  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-primary-ink);
}

.page-privacy .privacy-tail__text {
  margin: 0;
  max-width: 56ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-primary-ink);
}

.page-privacy .privacy-tail__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-content: start;
}

.page-privacy .privacy-tail .btn--ghost {
  color: var(--color-primary-ink);
  background-color: transparent;
  border-color: color-mix(in srgb, var(--color-primary-ink) 48%, transparent);
}

.page-privacy .privacy-tail .btn--ghost:hover,
.page-privacy .privacy-tail .btn--ghost:focus-visible {
  background-color: var(--color-primary-ink);
  color: var(--color-primary);
  border-color: var(--color-primary-ink);
}

/* ============ 响应式 ============ */
@media (min-width: 720px) {
  .page-privacy .privacy-clause {
    grid-template-columns: var(--space-8) minmax(0, 1fr);
    gap: var(--space-4);
  }

  .page-privacy .privacy-tail__inner {
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
    align-items: end;
    gap: var(--space-6);
  }
}

@media (min-width: 960px) {
  .page-privacy .privacy-layout {
    grid-template-columns: minmax(0, 1fr) minmax(0, 4.4fr);
    gap: var(--space-8);
    padding-block: var(--space-8);
  }

  .page-privacy .privacy-rail {
    position: sticky;
    top: var(--space-8);
    align-self: start;
    padding-top: var(--space-4);
  }

  .page-privacy .privacy-rail__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
  }

  .page-privacy .privacy-rail__link {
    display: flex;
    width: 100%;
    padding: var(--space-1) 0;
    background-color: transparent;
    border-radius: 0;
    border-bottom: var(--border-thin) solid transparent;
  }

  .page-privacy .privacy-rail__link:hover,
  .page-privacy .privacy-rail__link:focus-visible {
    background-color: transparent;
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
  }

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

  .page-privacy .privacy-masthead__inner {
    min-height: calc(var(--space-8) * 6);
  }
}

@media (max-width: 719px) {
  .page-privacy .privacy-masthead__inner {
    padding-inline: var(--space-2);
  }

  .page-privacy .privacy-layout,
  .page-privacy .privacy-tail__inner {
    padding-inline: var(--space-2);
  }

  .page-privacy .privacy-clause__num {
    font-size: var(--text-xl);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .privacy-rail__link {
    transition: none;
  }
}
</main>