.page-privacy {
  --pp-measure: 68ch;
  --pp-rail-w: 190px;
  background: var(--c-night);
  color: var(--c-body);
  padding-bottom: clamp(72px, 10vw, 132px);
}

.page-privacy .pp-shell {
  padding-inline: var(--gutter);
}

.page-privacy .breadcrumb {
  padding-top: clamp(18px, 3vw, 30px);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--c-muted);
}

.page-privacy .breadcrumb a {
  color: var(--c-muted);
  text-decoration: none;
  transition: color .18s var(--ease);
}

.page-privacy .breadcrumb a:hover {
  color: var(--c-green);
}

.page-privacy .breadcrumb .crumb-sep {
  margin-inline: 8px;
  color: var(--c-line-strong);
}

.page-privacy .breadcrumb [aria-current="page"] {
  color: var(--c-body);
}

/* ---------- 顶部氛围图带 ---------- */

.page-privacy .pp-band {
  position: relative;
  overflow: hidden;
  height: clamp(170px, 30vw, 360px);
  margin-bottom: clamp(26px, 4.5vw, 52px);
  background: var(--c-panel);
}

.page-privacy .pp-band img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  filter: brightness(.62) saturate(.92);
}

.page-privacy .pp-band::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(118deg, rgba(7, 12, 22, .94) 0%, rgba(7, 12, 22, .48) 46%, rgba(7, 12, 22, .18) 68%),
    linear-gradient(118deg, transparent 40%, var(--s-ice) 100%);
}

/* ---------- 页首 ---------- */

.page-privacy .pp-intro {
  max-width: 66ch;
  padding-bottom: clamp(30px, 5vw, 54px);
}

.page-privacy .eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--c-ice);
  margin: 0 0 14px;
}

.page-privacy .pp-intro h1 {
  margin: 0 0 22px;
  font-size: clamp(29px, 5.2vw, 56px);
  font-weight: 300;
  line-height: 1.2;
  letter-spacing: -.008em;
  color: var(--c-white);
}

.page-privacy .pp-intro .lead {
  margin: 0;
  max-width: 66ch;
  font-size: clamp(15.5px, 2vw, 18px);
  line-height: 1.85;
  color: var(--c-body);
}

.page-privacy .pp-meta {
  margin: 22px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--c-muted);
  padding-left: 16px;
  border-left: 2px solid var(--c-line-strong);
}

.page-privacy .pp-meta a {
  color: var(--c-ice);
  text-decoration: none;
  border-bottom: 1px solid var(--s-ice-line);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-privacy .pp-meta a:hover {
  color: var(--c-green);
  border-bottom-color: var(--s-green-line);
}

/* ---------- 布局：左侧章节索引 ---------- */

.page-privacy .pp-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 30px);
}

.page-privacy .pp-rail {
  position: sticky;
  top: 0;
  z-index: 3;
  margin: 0 0 6px;
  padding: 10px 0 12px;
  background: linear-gradient(to bottom, var(--c-night) 74%, rgba(7, 12, 22, 0));
}

.page-privacy .pp-rail-list {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 2px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-privacy .pp-rail-list::-webkit-scrollbar {
  display: none;
}

.page-privacy .pp-rail-list li {
  flex: 0 0 auto;
}

.page-privacy .pp-rail-list a {
  display: block;
  white-space: nowrap;
  padding: 6px 12px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  background: var(--c-panel);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--c-muted);
  text-decoration: none;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-privacy .pp-rail-list a:hover {
  color: var(--c-white);
  border-color: var(--c-line-strong);
}

.page-privacy .pp-rail-list a[aria-current="true"],
.page-privacy .pp-rail-list a[aria-current="page"] {
  color: var(--c-green);
  border-color: var(--s-green-line);
  background: var(--s-green);
}

/* ---------- 章节 ---------- */

.page-privacy .pp-body {
  min-width: 0;
}

.page-privacy .pp-sec {
  scroll-margin-top: calc(var(--header-h) + 26px);
  border-top: 1px solid var(--c-line);
  padding-top: clamp(22px, 3.4vw, 38px);
  margin-top: clamp(34px, 5vw, 58px);
}

.page-privacy .pp-body > .pp-sec:first-child {
  border-top: 0;
  margin-top: 0;
  padding-top: 0;
}

.page-privacy .pp-sec-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 16px;
}

.page-privacy .pp-num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-muted);
}

.page-privacy .pp-sec h2 {
  margin: 0;
  font-size: clamp(19px, 2.8vw, 26px);
  font-weight: 500;
  line-height: 1.36;
  letter-spacing: .01em;
  color: var(--c-white);
}

.page-privacy .pp-prose {
  max-width: var(--pp-measure);
}

.page-privacy .pp-prose p {
  max-width: var(--pp-measure);
  margin: 0 0 1.05em;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--c-body);
}

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

.page-privacy .pp-key {
  color: var(--c-white);
  font-weight: 600;
}

.page-privacy .pp-term {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.04em;
  letter-spacing: .02em;
  color: var(--c-green);
}

/* ---------- 可展开说明 ---------- */

.page-privacy .pp-detail {
  max-width: var(--pp-measure);
  margin: 22px 0 0;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-panel);
  transition: border-color .2s var(--ease);
}

.page-privacy .pp-detail:hover {
  border-color: var(--c-line-strong);
}

.page-privacy .pp-detail[open] {
  border-color: var(--s-green-line);
}

.page-privacy .pp-detail summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 13.5px;
  letter-spacing: .02em;
  color: var(--c-ice);
}

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

.page-privacy .pp-detail summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--c-green);
  transition: transform .2s var(--ease);
}

.page-privacy .pp-detail[open] summary::after {
  content: "−";
}

.page-privacy .pp-detail p {
  margin: 0;
  padding: 0 16px 15px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--c-body);
}

/* ---------- 选项清单 ---------- */

.page-privacy .pp-options {
  counter-reset: opt;
  list-style: none;
  max-width: var(--pp-measure);
  margin: 18px 0 0;
  padding: 0;
}

.page-privacy .pp-options li {
  counter-increment: opt;
  position: relative;
  padding: 14px 0 14px 46px;
  border-bottom: 1px dashed var(--c-line);
  font-size: 15px;
  line-height: 1.8;
}

.page-privacy .pp-options li:last-child {
  border-bottom: 1px dashed transparent;
}

.page-privacy .pp-options li::before {
  content: counter(opt, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-orange);
}

/* ---------- 引用 ---------- */

.page-privacy .pp-quote {
  max-width: var(--pp-measure);
  margin: 26px 0;
  padding: 4px 0 4px 20px;
  border-left: 2px solid var(--c-ice);
  font-size: clamp(15.5px, 2vw, 17.5px);
  line-height: 1.85;
  color: var(--c-white);
}

/* ---------- 联系信息 ---------- */

.page-privacy .pp-contact {
  display: grid;
  gap: 1px;
  max-width: 640px;
  margin: 22px 0 0;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-lg);
  background: var(--c-line);
  overflow: hidden;
}

.page-privacy .pp-contact .contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 18px;
  padding: 14px 18px;
  background: var(--c-panel);
}

.page-privacy .pp-contact .contact-key {
  flex: 0 0 84px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--c-muted);
}

.page-privacy .pp-contact .contact-val {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--c-white);
  word-break: break-word;
}

.page-privacy .pp-next {
  max-width: var(--pp-measure);
  margin: 24px 0 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--c-muted);
}

.page-privacy .pp-next a {
  color: var(--c-ice);
  text-decoration: none;
  border-bottom: 1px solid var(--s-ice-line);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-privacy .pp-next a:hover {
  color: var(--c-green);
  border-bottom-color: var(--s-green-line);
}

/* ---------- 响应式 ---------- */

@media (max-width: 639px) {
  .page-privacy .pp-sec-head {
    flex-direction: column;
    gap: 6px;
  }

  .page-privacy .pp-sec h2 {
    font-size: 19px;
  }

  .page-privacy .pp-prose p,
  .page-privacy .pp-options li {
    font-size: 16px;
  }

  .page-privacy .pp-contact .contact-key {
    flex: 0 0 100%;
  }
}

@media (min-width: 1024px) {
  .page-privacy .pp-layout {
    grid-template-columns: var(--pp-rail-w) minmax(0, 1fr);
    gap: clamp(38px, 5vw, 82px);
    align-items: start;
  }

  .page-privacy .pp-rail {
    position: sticky;
    top: calc(var(--header-h) + 30px);
    margin: 0;
    padding: 0 0 0 16px;
    background: none;
    border-left: 1px solid var(--c-line);
  }

  .page-privacy .pp-rail-list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding: 0;
  }

  .page-privacy .pp-rail-list li {
    width: 100%;
  }

  .page-privacy .pp-rail-list a {
    border: 0;
    border-radius: 0;
    background: none;
    padding: 8px 0 8px 12px;
    font-size: 11.5px;
    line-height: 1.5;
    white-space: normal;
  }

  .page-privacy .pp-rail-list a:hover {
    color: var(--c-white);
  }

  .page-privacy .pp-rail-list a[aria-current="true"],
  .page-privacy .pp-rail-list a[aria-current="page"] {
    color: var(--c-green);
    background: none;
    box-shadow: inset 2px 0 0 0 var(--c-green);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .pp-detail,
  .page-privacy .pp-rail-list a,
  .page-privacy .pp-meta a,
  .page-privacy .pp-next a {
    transition: none;
  }
}