.page-privacy {
  --pp-measure: 68ch;
  --pp-toc-w: 216px;
  background: var(--ink-900);
  color: var(--dim);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  padding-bottom: 88px;
}

/* ---------- 页头 ---------- */
.page-privacy .pp-head {
  padding-top: 26px;
}

.page-privacy .pp-head__eyebrow {
  margin: 26px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--teal);
}

.page-privacy .pp-head__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(28px, 7vw, 54px);
  line-height: 1.12;
  letter-spacing: -.015em;
  color: var(--bright);
}

.page-privacy .pp-head__title::after {
  content: "";
  display: block;
  width: 76px;
  height: 3px;
  margin-top: 18px;
  background: linear-gradient(90deg, var(--orange), var(--amber));
}

.page-privacy .pp-head__lead {
  margin: 22px 0 0;
  max-width: 62ch;
  font-size: 16px;
  color: var(--dim);
}

/* ---------- 顶部横幅 ---------- */
.page-privacy .pp-banner {
  position: relative;
  margin: 34px 0 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--ink-800);
}

.page-privacy .pp-banner::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: min(46%, 520px);
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--amber) 55%, transparent);
}

.page-privacy .pp-banner img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 340px;
  object-fit: cover;
  object-position: center;
  filter: saturate(.82) brightness(.86);
}

/* ---------- 主体两栏 ---------- */
.page-privacy .pp-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  padding-top: 40px;
}

/* ---------- 章节导航 ---------- */
.page-privacy .pp-toc {
  padding-left: 15px;
  border-left: 2px solid var(--line);
}

.page-privacy .toc__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--teal);
}

.page-privacy .toc__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-privacy .toc__link {
  display: inline-block;
  padding-bottom: 2px;
  font-size: 13px;
  color: var(--dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-privacy .toc__link:hover,
.page-privacy .toc__link[data-active] {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

/* ---------- 章节 ---------- */
.page-privacy .pp-section {
  padding-block: 34px;
  border-top: 1px solid var(--line);
}

.page-privacy .pp-articles > .pp-section:first-child {
  padding-top: 26px;
  border-top: 2px solid var(--orange);
}

.page-privacy .pp-section__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.page-privacy .pp-section__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .12em;
  color: var(--orange);
}

.page-privacy .pp-section__title {
  margin: 0;
  font-size: clamp(20px, 4.6vw, 28px);
  line-height: 1.3;
  color: var(--bright);
}

/* ---------- 可折叠要点 ---------- */
.page-privacy .pp-brief {
  margin: 20px 0 22px;
  background: var(--paper);
  color: var(--dark);
  border-radius: var(--radius);
  border-left: 3px solid var(--amber);
  box-shadow: var(--shadow-1);
  overflow: hidden;
}

.page-privacy .pp-brief__sum {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--dark);
  cursor: pointer;
  list-style: none;
}

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

.page-privacy .pp-brief__sum::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--orange);
}

.page-privacy .pp-brief[open] .pp-brief__sum::after {
  content: "\2212";
}

.page-privacy .pp-brief__list {
  margin: 0;
  padding: 0 18px 16px 34px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--dark);
}

.page-privacy .pp-brief__list li + li {
  margin-top: 5px;
}

.page-privacy .pp-brief__list li::marker {
  color: var(--orange);
}

/* ---------- 正文 ---------- */
.page-privacy .pp-articles p {
  max-width: var(--pp-measure);
  margin: 0 0 15px;
  font-size: 16px;
}

.page-privacy .pp-articles p:last-child {
  margin-bottom: 0;
}

.page-privacy .pp-key {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--amber);
  word-break: break-all;
}

/* ---------- 延伸入口 ---------- */
.page-privacy .pp-links {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: 46px;
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.page-privacy .pp-link {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding: 15px 18px;
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
  transition: border-color .2s var(--ease);
}

.page-privacy .pp-link:hover,
.page-privacy .pp-link:focus-visible {
  border-color: var(--orange);
}

.page-privacy .pp-link__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--teal);
}

.page-privacy .pp-link__v {
  font-size: 16px;
  color: var(--bright);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 640px) {
  .page-privacy .pp-links {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-privacy .pp-head {
    padding-top: 40px;
  }

  .page-privacy .pp-banner img {
    max-height: 400px;
  }

  .page-privacy .pp-body {
    grid-template-columns: var(--pp-toc-w) minmax(0, 1fr);
    gap: 58px;
    padding-top: 54px;
  }

  .page-privacy .pp-toc {
    position: sticky;
    top: 28px;
    align-self: start;
  }

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

  .page-privacy .toc__list li + li {
    margin-top: 11px;
  }

  .page-privacy .pp-section {
    padding-block: 42px;
  }

  .page-privacy .pp-brief {
    margin: 22px 0 26px;
  }
}

/* ---------- 宽屏 ---------- */
@media (min-width: 1200px) {
  .page-privacy .pp-head__lead {
    font-size: 17px;
  }

  .page-privacy .pp-articles p {
    font-size: 17px;
  }
}

/* ---------- 减少动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-privacy .toc__link,
  .page-privacy .pp-link {
    transition: none;
  }
}