.page-privacy {
  --pv-rail: 200px;
  --pv-gap: 46px;
  --pv-body: rgba(242, 245, 241, .86);
  --pv-body-dim: rgba(242, 245, 241, .72);
}

/* 面包屑 */
.page-privacy .pv-crumb {
  margin: 0 0 26px;
}

/* 首屏 */
.page-privacy .pv-hero {
  position: relative;
  padding-bottom: 24px;
}
.page-privacy .pv-hero::before {
  content: "";
  display: block;
  width: 58px;
  height: 3px;
  background: var(--cyan);
  margin-bottom: 18px;
}
.page-privacy .pv-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.85rem, 7vw, 3.15rem);
  line-height: 1.1;
  letter-spacing: -.025em;
  color: var(--paper);
  margin: 0 0 16px;
  max-width: 22em;
}
.page-privacy .pv-hero .lead {
  max-width: 40em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--pv-body);
  margin: 0 0 18px;
}
.page-privacy .pv-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 26px;
}

/* 顶部横幅 */
.page-privacy .pv-banner {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--ink-800);
  position: relative;
  overflow: hidden;
}
.page-privacy .pv-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 6;
  object-fit: cover;
}
.page-privacy .pv-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(to bottom, rgba(53, 255, 208, .05) 0 1px, transparent 1px 4px);
}
.page-privacy .pv-banner-cap {
  margin: 10px 0 0;
  font-size: 12.5px;
  letter-spacing: .04em;
  line-height: 1.7;
  color: var(--muted);
}

/* 主体两栏 */
.page-privacy .pv-shell {
  display: grid;
  gap: 30px;
  margin-top: 34px;
}

/* 章节索引 */
.page-privacy .pv-toc-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
}
.page-privacy .pv-toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 4px;
}
.page-privacy .pv-toc-list li {
  flex: 0 0 auto;
}
.page-privacy .pv-toc-list a {
  display: block;
  padding: 9px 12px;
  border-left: 2px solid var(--line);
  border-bottom: 1px solid var(--line-2);
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color .24s var(--ease), border-color .24s var(--ease), background-color .24s var(--ease);
}
.page-privacy .pv-toc-list a:hover,
.page-privacy .pv-toc-list a:focus-visible {
  color: var(--paper);
  border-left-color: var(--cyan);
  background: rgba(53, 255, 208, .06);
}

/* 正文章节 */
.page-privacy .pv-section {
  padding: 30px 0 8px;
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--bar-h) + 20px);
}
.page-privacy .pv-section:first-child {
  padding-top: 0;
  border-top: 0;
}
.page-privacy .pv-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 16px;
}
.page-privacy .pv-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
  flex: 0 0 auto;
}
.page-privacy .pv-h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.3rem, 4.4vw, 1.85rem);
  line-height: 1.28;
  letter-spacing: -.01em;
  color: var(--paper);
}
.page-privacy .pv-section:target .pv-h2::after {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  margin-left: 12px;
  background: var(--cyan);
  transform: rotate(45deg);
  vertical-align: middle;
}

.page-privacy .pv-prose {
  max-width: 42em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--pv-body);
}
.page-privacy .pv-prose p {
  margin: 0 0 14px;
}
.page-privacy .pv-prose a {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(124, 246, 224, .35);
}
.page-privacy .pv-prose a:hover,
.page-privacy .pv-prose a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* 列表 */
.page-privacy .pv-list {
  list-style: none;
  margin: 4px 0 20px;
  padding: 0;
  display: grid;
  gap: 10px;
  max-width: 42em;
}
.page-privacy .pv-list li {
  position: relative;
  padding-left: 22px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--pv-body);
}
.page-privacy .pv-list li::before {
  content: "";
  position: absolute;
  left: 3px;
  top: .72em;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  transform: rotate(45deg);
}

/* 线框表格 */
.page-privacy .pv-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line);
  background: var(--ink-800);
  margin: 6px 0 24px;
}
.page-privacy .pv-table {
  width: 100%;
  min-width: 680px;
  border-collapse: collapse;
  font-size: 14px;
}
.page-privacy .pv-table caption {
  text-align: left;
  padding: 14px 16px 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--muted);
}
.page-privacy .pv-table th {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .12em;
  text-align: left;
  color: var(--muted);
  padding: 14px 16px 12px;
  border-bottom: 1px solid var(--line);
}
.page-privacy .pv-table td {
  padding: 14px 16px;
  vertical-align: top;
  line-height: 1.75;
  color: var(--pv-body);
  border-bottom: 1px solid var(--line-2);
}
.page-privacy .pv-table tbody tr:last-child td {
  border-bottom: 0;
}
.page-privacy .pv-table td:first-child {
  color: var(--paper);
  font-weight: 600;
}
.page-privacy .pv-field {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
  color: var(--cyan-soft);
  white-space: nowrap;
}

/* 关键定义：纸张叠层卡 */
.page-privacy .pv-defs {
  display: grid;
  gap: 14px;
  margin: 4px 0 22px;
}
.page-privacy .pv-def {
  background: var(--stack);
  color: var(--ink-900);
  border: 1px solid rgba(6, 17, 14, .2);
  border-radius: 2px;
  box-shadow: var(--shadow-stack);
}
.page-privacy .pv-def summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 14.5px;
  letter-spacing: .01em;
  color: var(--ink-900);
}
.page-privacy .pv-def summary::-webkit-details-marker {
  display: none;
}
.page-privacy .pv-def summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--ink-750);
  flex: 0 0 auto;
}
.page-privacy .pv-def[open] summary {
  border-bottom: 1px solid rgba(6, 17, 14, .18);
}
.page-privacy .pv-def[open] summary::after {
  content: "–";
}
.page-privacy .pv-def p {
  margin: 0;
  padding: 12px 16px 16px;
  font-size: 14px;
  line-height: 1.8;
  color: #23332d;
}

/* 保存期限 */
.page-privacy .pv-terms {
  margin: 6px 0 20px;
  border-top: 1px solid var(--line);
}
.page-privacy .pv-term {
  display: grid;
  gap: 6px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line-2);
}
.page-privacy .pv-term dt {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--cyan-soft);
}
.page-privacy .pv-term dd {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--pv-body);
}
.page-privacy .pv-note {
  margin: 0 0 22px;
  padding: 4px 0 4px 14px;
  border-left: 2px solid var(--amber);
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--pv-body-dim);
  max-width: 42em;
}

/* 联系渠道 */
.page-privacy .pv-channels {
  display: grid;
  gap: 12px;
  margin: 6px 0 24px;
}
.page-privacy .pv-channel {
  border: 1px solid var(--line);
  background: var(--ink-800);
  border-radius: 2px;
  padding: 16px;
  box-shadow: var(--shadow-panel);
}
.page-privacy .pv-ch-label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--muted);
}
.page-privacy .pv-ch-val {
  display: block;
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper);
  overflow-wrap: anywhere;
}

/* 平板及以上 */
@media (min-width: 640px) {
  .page-privacy .pv-hero .lead,
  .page-privacy .pv-prose,
  .page-privacy .pv-list li {
    font-size: 17px;
  }
  .page-privacy .pv-term {
    grid-template-columns: minmax(0, 11rem) minmax(0, 1fr);
    gap: 22px;
    align-items: baseline;
  }
  .page-privacy .pv-defs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-privacy .pv-channels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* 桌面端：左侧章节索引常驻 */
@media (min-width: 960px) {
  .page-privacy .pv-shell {
    grid-template-columns: var(--pv-rail) minmax(0, 1fr);
    gap: var(--pv-gap);
    align-items: start;
  }
  .page-privacy .pv-toc {
    position: sticky;
    top: calc(var(--bar-h) + 24px);
    padding-right: 6px;
  }
  .page-privacy .pv-toc-list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-privacy .pv-toc-list li + li {
    margin-top: 4px;
  }
  .page-privacy .pv-toc-list a {
    white-space: normal;
    border-bottom: 0;
    padding: 10px 12px;
  }
  .page-privacy .pv-channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-privacy .pv-section {
    padding-top: 38px;
  }
}

/* 大屏：阅读栏更舒展 */
@media (min-width: 1200px) {
  .page-privacy {
    --pv-rail: 220px;
  }
  .page-privacy .pv-prose,
  .page-privacy .pv-list,
  .page-privacy .pv-note {
    max-width: 46em;
  }
}

/* 无脚本或键盘操作 */
.page-privacy .pv-def[open] {
  outline: none;
}
@media (prefers-reduced-motion: reduce) {
  .page-privacy .pv-toc-list a {
    transition: none;
  }
}
<<<END>>>