.page-privacy {
  --pv-toc-w: 220px;
  background:
    radial-gradient(1100px 520px at 14% -12%, #0A1018 0%, transparent 62%),
    var(--ink);
  color: var(--frost);
}

/* ---------- 面包屑与首屏 ---------- */

.page-privacy .pv-crumbs {
  padding-block: clamp(16px, 3vw, 28px) 0;
}

.page-privacy .pv-hero {
  position: relative;
  padding-block: clamp(28px, 4.5vw, 56px) clamp(40px, 6vw, 80px);
}

.page-privacy .pv-hero .shell {
  position: relative;
}

.page-privacy .pv-hero .shell::before {
  content: "";
  position: absolute;
  top: 0;
  left: clamp(16px, 4vw, 32px);
  width: 104px;
  height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
}

.page-privacy .pv-hero__grid {
  align-items: center;
  row-gap: clamp(28px, 5vw, 48px);
}

.page-privacy .pv-hero__text h1 {
  margin: 14px 0 18px;
  font-size: clamp(30px, 5.2vw, 54px);
  font-weight: 800;
  font-stretch: 92%;
  line-height: 1.12;
  letter-spacing: -0.012em;
  color: var(--frost);
  max-width: 15ch;
}

.page-privacy .pv-hero__text .lead {
  max-width: 44ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
  margin: 0 0 22px;
}

.page-privacy .pv-hero__keys {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-privacy .pv-hero__fig .figure {
  border: 1px solid var(--brushed);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--carbon);
}

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

.page-privacy .pv-hero__fig .figure__cap {
  padding: 10px 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist);
  border-top: 1px solid var(--steel);
  background: rgba(5, 7, 11, 0.6);
  margin: 0;
}

/* ---------- 正文骨架 ---------- */

.page-privacy .pv-doc {
  padding-block: clamp(8px, 2vw, 24px) clamp(72px, 10vw, 132px);
}

.page-privacy .pv-doc__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

/* ---------- 章节索引 ---------- */

.page-privacy .pv-toc {
  border-top: 1px solid var(--steel);
  border-bottom: 1px solid var(--steel);
  padding: 16px 0;
}

.page-privacy .pv-toc .eyebrow {
  margin: 0 0 10px;
}

.page-privacy .pv-toc__list {
  display: flex;
  gap: 10px;
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-privacy .pv-toc__list li {
  flex: 0 0 auto;
}

.page-privacy .pv-toc__list a {
  display: inline-block;
  padding: 6px 12px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
  border: 1px solid var(--steel);
  border-radius: var(--r);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease);
}

.page-privacy .pv-toc__list a:hover,
.page-privacy .pv-toc__list a:focus-visible {
  color: var(--frost);
  border-color: var(--blue);
  background: rgba(127, 182, 217, 0.08);
}

/* ---------- 正文条目 ---------- */

.page-privacy .pv-body {
  display: grid;
  gap: clamp(36px, 5vw, 68px);
  max-width: 68ch;
}

.page-privacy .pv-block {
  position: relative;
  padding-top: 26px;
  border-top: 1px solid var(--steel);
  scroll-margin-top: 96px;
}

.page-privacy .pv-block::after {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 56px;
  height: 1px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  opacity: 0.85;
}

.page-privacy .pv-block__no {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--blue);
  font-variant-numeric: tabular-nums;
}

.page-privacy .pv-block h2 {
  margin: 0 0 16px;
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 800;
  letter-spacing: -0.008em;
  line-height: 1.3;
  color: var(--frost);
}

.page-privacy .pv-block__claim {
  margin: 0 0 20px;
  padding-left: 14px;
  border-left: 2px solid var(--cyan);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.72;
  color: var(--frost);
}

.page-privacy .pv-list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-privacy .pv-list li {
  position: relative;
  padding-left: 22px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}

.page-privacy .pv-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 14px;
  width: 7px;
  height: 1px;
  background: var(--brushed);
}

.page-privacy .pv-list strong {
  color: var(--frost);
  font-weight: 700;
}

.page-privacy .pv-list a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(127, 182, 217, 0.35);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-privacy .pv-list a:hover,
.page-privacy .pv-list a:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-privacy .pv-note {
  margin: 0;
  padding: 13px 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
  background: var(--carbon);
  border-left: 2px solid var(--brushed);
  border-radius: 0 var(--r) var(--r) 0;
}

.page-privacy .num {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  font-weight: 700;
  color: var(--cyan);
}

.page-privacy .pv-stamp {
  margin: 22px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--steel);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

/* ---------- 返回顶部 ---------- */

.page-privacy .pv-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 40;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 15px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
  background: rgba(16, 20, 27, 0.94);
  border: 1px solid var(--brushed);
  border-radius: var(--r);
  cursor: pointer;
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition:
    opacity var(--t-mid) var(--ease),
    transform var(--t-mid) var(--ease),
    color var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease);
}

.page-privacy .pv-top[data-visible] {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.page-privacy .pv-top:hover,
.page-privacy .pv-top:focus-visible {
  color: var(--frost);
  border-color: var(--blue);
}

/* ---------- 平板 ---------- */

@media (min-width: 700px) {
  .page-privacy .pv-hero__fig .figure__cap {
    font-size: 12px;
  }

  .page-privacy .pv-toc__list {
    flex-wrap: wrap;
    overflow-x: visible;
  }
}

/* ---------- 桌面：左侧固定章节索引 ---------- */

@media (min-width: 960px) {
  .page-privacy .pv-doc__grid {
    grid-template-columns: var(--pv-toc-w) minmax(0, 1fr);
    gap: clamp(44px, 6vw, 84px);
    align-items: start;
  }

  .page-privacy .pv-toc {
    position: sticky;
    top: 96px;
    border-top: none;
    border-bottom: none;
    border-left: 1px solid var(--steel);
    padding: 4px 0 4px 20px;
    max-height: calc(100vh - 160px);
    overflow-y: auto;
  }

  .page-privacy .pv-toc .eyebrow {
    margin-bottom: 14px;
  }

  .page-privacy .pv-toc__list {
    display: block;
  }

  .page-privacy .pv-toc__list li + li {
    margin-top: 4px;
  }

  .page-privacy .pv-toc__list a {
    display: block;
    padding: 7px 10px 7px 12px;
    font-size: 13px;
    letter-spacing: 0.04em;
    border: 1px solid transparent;
    border-left: 2px solid transparent;
    border-radius: 0 var(--r) var(--r) 0;
    white-space: normal;
  }

  .page-privacy .pv-toc__list a:hover,
  .page-privacy .pv-toc__list a:focus-visible {
    background: rgba(127, 182, 217, 0.07);
    border-color: transparent;
    border-left-color: var(--blue);
  }

  .page-privacy .pv-body {
    max-width: 66ch;
  }

  .page-privacy .pv-top {
    right: 32px;
    bottom: 32px;
  }
}

@media (min-width: 1240px) {
  .page-privacy {
    --pv-toc-w: 248px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .pv-top,
  .page-privacy .pv-toc__list a,
  .page-privacy .pv-list a {
    transition-duration: 1ms;
  }
}