.page-privacy {
  --privacy-grid-dot: color-mix(in srgb, var(--color-line) 60%, transparent);
  --privacy-num-col: calc(var(--space-4) + var(--space-1));
  --privacy-index-w: calc(var(--space-8) * 3.5);
  --privacy-body-offset: calc(var(--privacy-num-col) + var(--space-3));

  background-color: var(--color-surface);
  background-image: radial-gradient(var(--privacy-grid-dot) var(--border-thin), transparent var(--border-thin));
  background-size: var(--space-6) var(--space-6);
}

/* ---------- 首屏说明区 ---------- */

.page-privacy .page-privacy__head {
  padding-block: var(--space-6) var(--space-8);
}

.page-privacy .policy-head__grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-6);
}

.page-privacy .policy-head__title {
  font-family: var(--font-heading);
  font-size: clamp(var(--text-xl), 6.2vw, var(--text-2xl));
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  margin: var(--space-3) 0 var(--space-4);
  max-width: 20ch;
}

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

.page-privacy .policy-facts {
  display: grid;
  gap: var(--space-3);
  margin: 0;
  align-content: end;
}

.page-privacy .policy-facts__item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
}

.page-privacy .policy-facts__label {
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

.page-privacy .policy-facts__value {
  font-size: var(--text-lg);
  color: var(--color-ink);
  letter-spacing: 0.04em;
  margin: 0;
}

.page-privacy .policy-head__figure {
  margin: var(--space-8) 0 0;
}

.page-privacy .policy-head__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 条款主体与索引 ---------- */

.page-privacy .page-privacy__body {
  padding-block: var(--space-4) var(--section-y);
}

.page-privacy .policy-layout {
  display: grid;
  gap: var(--space-6);
}

.page-privacy .policy-index {
  position: relative;
}

.page-privacy .index__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  color: var(--color-ink-muted);
  margin: 0 0 var(--space-2);
}

.page-privacy .index__list {
  display: flex;
  gap: var(--space-2);
  margin: 0;
  padding: 0 0 var(--space-1);
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.page-privacy .index__list::-webkit-scrollbar {
  display: none;
}

.page-privacy .index__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  min-height: 44px;
  padding-inline: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-ink-soft);
  text-decoration: none;
  white-space: nowrap;
  transition: color 160ms linear;
}

.page-privacy .index__num {
  color: var(--color-ink-muted);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
}

.page-privacy .index__link:hover,
.page-privacy .index__link:focus-visible,
.page-privacy .index__link[aria-current] {
  color: var(--color-accent);
}

.page-privacy .index__link:hover .index__num,
.page-privacy .index__link[aria-current] .index__num {
  color: var(--color-accent);
}

.page-privacy .index__link:focus-visible {
  outline: var(--border-thin) solid var(--color-focus);
  outline-offset: 2px;
}

/* ---------- 条款正文 ---------- */

.page-privacy .clause-list {
  min-width: 0;
}

.page-privacy .clause-list__heading {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: 0 0 var(--space-6);
  max-width: 24ch;
}

.page-privacy .clause {
  scroll-margin-top: var(--space-8);
  padding-block: var(--space-6);
}

.page-privacy .clause__summary {
  display: grid;
  grid-template-columns: var(--privacy-num-col) minmax(0, 1fr);
  gap: var(--space-3);
  align-items: baseline;
  min-height: 44px;
  padding-block: var(--space-1);
  cursor: pointer;
  list-style: none;
}

.page-privacy .clause__summary::-webkit-details-marker {
  display: none;
}

.page-privacy .clause__num {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  letter-spacing: 0.12em;
  padding-top: 0.45em;
}

.page-privacy .clause__title {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  transition: color 160ms linear;
}

.page-privacy .clause__summary:hover .clause__title,
.page-privacy .clause__summary:focus-visible .clause__title {
  color: var(--color-accent);
}

.page-privacy .clause__summary:focus-visible {
  outline: var(--border-thin) solid var(--color-focus);
  outline-offset: 4px;
}

.page-privacy .clause__body.panel__body {
  background-color: transparent;
  margin-left: var(--privacy-body-offset);
  max-width: var(--measure);
  padding-top: var(--space-4);
}

.page-privacy .clause__lede {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
  border-left: var(--border-thin) solid var(--color-primary);
  padding-left: var(--space-3);
  margin: 0 0 var(--space-4);
}

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

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

.page-privacy .clause__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.85em;
  width: var(--space-2);
  height: var(--border-thin);
  background-color: var(--color-primary);
}

/* ---------- 收口出口 ---------- */

.page-privacy .page-privacy__exit {
  padding-block: var(--space-6) var(--section-y);
}

.page-privacy .policy-exit {
  max-width: var(--measure);
}

.page-privacy .policy-exit h2 {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
  margin: 0 0 var(--space-3);
}

.page-privacy .policy-exit p {
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
  margin: 0 0 var(--space-4);
}

.page-privacy .policy-exit__actions {
  margin: 0;
}

/* ---------- 响应式 ---------- */

@media (max-width: 640px) {
  .page-privacy .clause__summary {
    grid-template-columns: calc(var(--space-3) + var(--space-1)) minmax(0, 1fr);
    gap: var(--space-2);
  }

  .page-privacy .clause__body.panel__body {
    margin-left: 0;
  }

  .page-privacy .clause {
    padding-block: var(--space-4);
  }
}

@media (min-width: 860px) {
  .page-privacy .policy-head__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr);
    gap: var(--space-8);
    align-items: end;
  }
}

@media (min-width: 900px) {
  .page-privacy .policy-layout {
    grid-template-columns: minmax(0, 1fr) var(--privacy-index-w);
    grid-template-areas: "clauses index";
    gap: var(--space-8);
    align-items: start;
  }

  .page-privacy .policy-index {
    grid-area: index;
    position: sticky;
    top: var(--space-6);
  }

  .page-privacy .clause-list {
    grid-area: clauses;
  }

  .page-privacy .index__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-privacy .index__link {
    width: 100%;
    justify-content: flex-start;
    padding-inline: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .index__link,
  .page-privacy .clause__title {
    transition: none;
  }
}