```css
.page-privacy {
  --pv-cyan-deep: #0E8478;
  --pv-hair: rgba(26, 31, 38, .14);
  --pv-ink-soft: rgba(26, 31, 38, .70);
  --pv-surface: rgba(11, 18, 32, .045);

  background: var(--ly-paperlight);
  color: var(--ly-ink);
  overflow-x: clip;
}

/* ── 顶部深色信息条 ── */
.page-privacy .pv-band {
  position: relative;
  padding-top: calc(var(--ly-header-h) + 44px);
  padding-bottom: 48px;
  color: var(--ly-paper);
  background:
    radial-gradient(120% 150% at 86% 8%, #16384F 0%, #0B1220 44%, #070B14 100%);
  overflow: hidden;
}

.page-privacy .pv-band::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--ly-cyan-55), transparent);
}

.page-privacy .pv-band__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  align-items: end;
}

.page-privacy .pv-band__title {
  margin: 10px 0 0;
  font-family: var(--ly-font-display);
  font-size: clamp(34px, 7vw, 56px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--ly-paper);
}

.page-privacy .pv-band__lead {
  margin: 16px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ly-body-soft);
}

.page-privacy .pv-band__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.page-privacy .pv-band__media {
  position: relative;
  margin: 0;
  border: 1px solid var(--ly-line);
  border-radius: var(--ly-r-lg);
  overflow: hidden;
  aspect-ratio: 2 / 1;
}

.page-privacy .pv-band__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7, 11, 20, .10), rgba(7, 11, 20, .62));
  pointer-events: none;
}

.page-privacy .pv-band__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  opacity: .55;
}

/* ── 阅读区 ── */
.page-privacy .pv-read {
  padding: 26px 0 72px;
  background: var(--ly-paperlight);
}

.page-privacy .pv-crumb {
  margin-bottom: 26px;
}

.page-privacy .pv-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

/* 目录 */
.page-privacy .pv-toc {
  padding: 18px 16px;
  border: 1px solid var(--pv-hair);
  border-radius: var(--ly-r-md);
  background: var(--pv-surface);
}

.page-privacy .pv-toc__label {
  margin: 0 0 12px;
  font-family: var(--ly-font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--pv-ink-soft);
}

.page-privacy .pv-toc__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-privacy .pv-toc__list a {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 8px;
  align-items: baseline;
  padding: 9px 10px 9px 12px;
  border-left: 2px solid transparent;
  border-radius: 0 8px 8px 0;
  font-size: 15px;
  line-height: 1.5;
  color: var(--pv-ink-soft);
  text-decoration: none;
  transition: color var(--ly-dur) var(--ly-ease),
              background-color var(--ly-dur) var(--ly-ease),
              border-color var(--ly-dur) var(--ly-ease);
}

.page-privacy .pv-toc__idx {
  font-family: var(--ly-font-mono);
  font-size: 12px;
  color: var(--pv-cyan-deep);
}

.page-privacy .pv-toc__list a:hover,
.page-privacy .pv-toc__list a:focus-visible {
  border-left-color: var(--pv-cyan-deep);
  background: rgba(14, 132, 120, .10);
  color: var(--ly-ink);
}

.page-privacy .pv-toc__list a:focus-visible {
  outline: 2px solid var(--pv-cyan-deep);
  outline-offset: 2px;
}

.page-privacy .pv-toc__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--pv-hair);
}

/* 浅底上的按钮 */
.page-privacy .ly-btn {
  min-height: 40px;
}

.page-privacy .ly-btn--ghost {
  color: var(--ly-ink);
  border: 1px solid rgba(26, 31, 38, .26);
  background: transparent;
}

.page-privacy .ly-btn--ghost:hover,
.page-privacy .ly-btn--ghost:focus-visible {
  color: var(--pv-cyan-deep);
  border-color: var(--pv-cyan-deep);
  background: rgba(14, 132, 120, .09);
}

.page-privacy .ly-btn--ghost:focus-visible {
  outline: 2px solid var(--pv-cyan-deep);
  outline-offset: 2px;
}

/* 正文列 */
.page-privacy .pv-doc {
  max-width: 720px;
}

.page-privacy .pv-doc__intro {
  margin: 0 0 30px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--pv-hair);
  font-size: 17px;
  line-height: 1.75;
  color: var(--ly-ink);
}

.page-privacy .pv-clause {
  padding-top: 30px;
  margin-top: 30px;
  border-top: 1px solid var(--pv-hair);
  scroll-margin-top: calc(var(--ly-header-h) + 28px);
}

.page-privacy .pv-clause:first-of-type {
  padding-top: 0;
  margin-top: 0;
  border-top: 0;
}

.page-privacy .pv-clause__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 18px;
}

.page-privacy .pv-clause__num {
  flex: none;
  font-family: var(--ly-font-mono);
  font-size: clamp(32px, 4.4vw, 44px);
  font-weight: 700;
  line-height: .9;
  letter-spacing: -.02em;
  color: rgba(11, 18, 32, .20);
}

.page-privacy .pv-clause__title {
  margin: 0;
  font-family: var(--ly-font-display);
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--ly-ink);
}

.page-privacy .pv-clause__body p {
  margin: 0 0 16px;
  font-size: 17px;
  line-height: 1.78;
  color: var(--ly-ink);
}

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

.page-privacy .pv-clause__body strong {
  font-weight: 800;
  color: var(--ly-ink);
}

.page-privacy .pv-list {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 13px;
}

.page-privacy .pv-list > li {
  position: relative;
  padding-left: 22px;
  font-size: 17px;
  line-height: 1.78;
  color: var(--ly-ink);
}

.page-privacy .pv-list > li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .66em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--pv-cyan-deep);
  transform: rotate(45deg);
}

/* 场景卡 */
.page-privacy .pv-scenes {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-privacy .pv-scene {
  padding: 16px 18px 14px;
  border: 1px solid var(--pv-hair);
  border-left: 3px solid var(--ly-moss);
  border-radius: 0 var(--ly-r-md) var(--ly-r-md) 0;
  background: var(--pv-surface);
}

.page-privacy .pv-scene p {
  margin: 10px 0 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ly-ink);
}

/* 渠道提示块 */
.page-privacy .pv-callout {
  margin-top: 20px;
  padding: 18px 20px;
  border-radius: var(--ly-r-md);
  border: 1px dashed rgba(14, 132, 120, .45);
  background: rgba(14, 132, 120, .07);
}

.page-privacy .pv-callout__title {
  margin: 0 0 8px;
  font-family: var(--ly-font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--pv-cyan-deep);
}

.page-privacy .pv-callout p {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ly-ink);
}

.page-privacy .pv-link {
  color: var(--pv-cyan-deep);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--ly-dur) var(--ly-ease);
}

.page-privacy .pv-link:hover,
.page-privacy .pv-link:focus-visible {
  color: #0A5F57;
}

.page-privacy .pv-link:focus-visible {
  outline: 2px solid var(--pv-cyan-deep);
  outline-offset: 2px;
}

/* 末尾入口 */
.page-privacy .pv-end {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 44px;
  padding-top: 26px;
  border-top: 1px solid var(--pv-hair);
}

/* ── 断点 ── */
@media (min-width: 720px) {
  .page-privacy .pv-band {
    padding-top: calc(var(--ly-header-h) + 64px);
    padding-bottom: 64px;
  }

  .page-privacy .pv-band__lead {
    font-size: 17px;
  }

  .page-privacy .pv-scene {
    padding: 18px 22px 16px;
  }

  .page-privacy .pv-read {
    padding: 34px 0 90px;
  }
}

@media (min-width: 900px) {
  .page-privacy .pv-band__inner {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    gap: 48px;
  }

  .page-privacy .pv-band__media {
    aspect-ratio: 3 / 2;
  }

  .page-privacy .pv-layout {
    grid-template-columns: 224px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-privacy .pv-toc {
    position: sticky;
    top: calc(var(--ly-header-h) + 26px);
  }
}

@media (min-width: 1100px) {
  .page-privacy .pv-layout {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .pv-toc__list a,
  .page-privacy .pv-link,
  .page-privacy .ly-btn--ghost {
    transition: none;
  }
}

@media print {
  .page-privacy {
    background: #fff;
    color: #000;
  }

  .page-privacy .pv-toc,
  .page-privacy .pv-band__media,
  .page-privacy .pv-end,
  .page-privacy .pv-crumb {
    display: none;
  }

  .page-privacy .pv-band {
    padding: 0 0 18px;
    color: #000;
    background: none;
  }

  .page-privacy .pv-band__title,
  .page-privacy .pv-band__lead {
    color: #000;
  }

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

  .page-privacy .pv-doc {
    max-width: none;
  }
}
```