.page-privacy {
  --privacy-measure: 44rem;
  --privacy-rail-w: 200px;
  background: var(--xb-indigo);
  color: var(--xb-paper);
}

/* 首屏 */
.page-privacy .privacy-hero {
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--xb-header-h) + 36px);
  border-bottom: 1px solid var(--xb-hair);
  background:
    linear-gradient(180deg, rgba(20, 28, 63, .92) 0%, rgba(11, 18, 48, 1) 78%),
    var(--xb-indigo);
}

.page-privacy .privacy-hero__mesh {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .55;
  background-image:
    linear-gradient(to right, var(--xb-grid-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--xb-grid-line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .9), transparent 92%);
}

.page-privacy .privacy-hero__inner {
  position: relative;
  z-index: 1;
}

.page-privacy .privacy-hero__crumb {
  margin-bottom: 28px;
}

.page-privacy .privacy-hero__title {
  margin: 10px 0 18px;
  max-width: 22em;
  font-family: var(--xb-font-head);
  font-size: clamp(1.9rem, 7vw, 3.2rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -.01em;
  color: var(--xb-paper);
}

.page-privacy .privacy-hero__lead {
  max-width: 40em;
  color: #C7CDE2;
}

.page-privacy .privacy-hero__points {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--xb-hair);
}

.page-privacy .privacy-hero__points li {
  position: relative;
  padding: 16px 0 18px 18px;
  border-bottom: 1px solid var(--xb-hair);
  font-size: .95rem;
  line-height: 1.75;
  color: #B9C0D8;
}

.page-privacy .privacy-hero__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  width: 8px;
  height: 1px;
  background: var(--xb-cyan);
}

.page-privacy .privacy-hero__pointlabel {
  display: block;
  margin-bottom: 4px;
  font-family: var(--xb-font-head);
  font-size: .78rem;
  letter-spacing: .16em;
  color: var(--xb-amber);
}

.page-privacy .privacy-hero__media {
  position: relative;
  z-index: 1;
  margin: 36px 0 0;
  border-top: 1px solid var(--xb-hair);
}

.page-privacy .privacy-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.45) contrast(1.06) brightness(.8);
}

/* 主体布局 */
.page-privacy .privacy-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding: 36px var(--xb-gutter) 72px;
  max-width: var(--xb-wrap);
  margin-inline: auto;
}

.page-privacy .privacy-rail {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-privacy .privacy-rail__label {
  margin: 0;
  font-family: var(--xb-font-head);
  font-size: .72rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--xb-mist);
}

.page-privacy .privacy-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-privacy .privacy-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 11px;
  white-space: nowrap;
  border: 1px solid var(--xb-steel);
  color: #C2C8DD;
  font-size: .82rem;
  text-decoration: none;
  transition: color .2s var(--xb-ease), border-color .2s var(--xb-ease), background-color .2s var(--xb-ease);
}

.page-privacy .privacy-rail__num {
  font-family: var(--xb-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .74rem;
  color: var(--xb-amber);
}

.page-privacy .privacy-rail__link:hover,
.page-privacy .privacy-rail__link:focus-visible {
  color: var(--xb-paper);
  border-color: var(--xb-amber);
  background: rgba(232, 163, 61, .08);
}

.page-privacy .privacy-rail__top {
  align-self: flex-start;
  margin-top: 4px;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--xb-hair);
  color: var(--xb-mist);
  font-size: .78rem;
  letter-spacing: .08em;
  text-decoration: none;
}

.page-privacy .privacy-rail__top:hover,
.page-privacy .privacy-rail__top:focus-visible {
  color: var(--xb-cyan);
  border-color: var(--xb-cyan);
}

.page-privacy .privacy-body {
  min-width: 0;
  max-width: var(--privacy-measure);
}

/* 章节 */
.page-privacy .privacy-block {
  padding: 34px 0 30px;
  border-top: 1px solid var(--xb-hair);
  scroll-margin-top: calc(var(--xb-header-h) + 20px);
}

.page-privacy .privacy-block__title {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 16px;
  font-family: var(--xb-font-head);
  font-size: clamp(1.25rem, 4vw, 1.65rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -.005em;
  color: var(--xb-paper);
}

.page-privacy .privacy-block__num {
  font-family: var(--xb-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--xb-amber);
}

.page-privacy .privacy-subtitle {
  margin: 26px 0 12px;
  font-family: var(--xb-font-head);
  font-size: .95rem;
  font-weight: 700;
  letter-spacing: .06em;
  color: #C7CDE2;
}

.page-privacy .xb-prose {
  margin: 0 0 16px;
  max-width: 40em;
  line-height: 1.85;
  color: #C7CDE2;
}

.page-privacy .privacy-body a {
  color: var(--xb-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 224, 192, .4);
}

.page-privacy .privacy-body a:hover,
.page-privacy .privacy-body a:focus-visible {
  border-bottom-color: var(--xb-cyan);
}

.page-privacy .xb-note {
  margin: 18px 0 0;
  border-left: 2px solid var(--xb-cyan);
  padding: 2px 0 2px 14px;
  font-size: .82rem;
  line-height: 1.7;
  color: var(--xb-mist);
}

/* 信息分组 */
.page-privacy .privacy-items {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 22px;
}

.page-privacy .privacy-item {
  padding: 18px 18px 16px;
  border: 1px solid var(--xb-steel);
  background: rgba(20, 28, 63, .62);
}

.page-privacy .privacy-item__title {
  margin: 0 0 12px;
  font-family: var(--xb-font-head);
  font-size: .92rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--xb-paper);
}

.page-privacy .privacy-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-privacy .privacy-list li {
  position: relative;
  padding: 7px 0 7px 18px;
  line-height: 1.8;
  color: #C2C8DD;
}

.page-privacy .privacy-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.05em;
  width: 9px;
  height: 1px;
  background: var(--xb-cyan);
  opacity: .85;
}

.page-privacy .privacy-list--wide {
  margin-top: 6px;
}

.page-privacy .privacy-list--wide li {
  border-bottom: 1px solid rgba(35, 43, 77, .8);
}

.page-privacy .privacy-list--wide li:last-child {
  border-bottom: 0;
}

.page-privacy .privacy-term {
  padding: 1px 6px;
  background: rgba(139, 147, 176, .14);
  box-shadow: inset 0 -1px 0 rgba(47, 224, 192, .4);
  color: var(--xb-paper);
}

/* 折叠说明 */
.page-privacy .privacy-fold {
  margin-top: 22px;
  border: 1px solid var(--xb-steel);
  background: rgba(20, 28, 63, .5);
}

.page-privacy .privacy-fold summary {
  position: relative;
  padding: 14px 42px 14px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--xb-font-head);
  font-size: .9rem;
  letter-spacing: .04em;
  color: var(--xb-paper);
}

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

.page-privacy .privacy-fold summary::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--xb-font-mono);
  color: var(--xb-amber);
}

.page-privacy .privacy-fold[open] summary::after {
  content: "–";
}

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

.page-privacy .privacy-fold__body p {
  margin: 14px 0 0;
  font-size: .86rem;
  line-height: 1.8;
  color: var(--xb-mist);
}

/* 相关说明 */
.page-privacy .privacy-related {
  margin-top: 34px;
  padding-top: 24px;
  border-top: 1px solid var(--xb-hair);
}

.page-privacy .privacy-related__label {
  margin: 0 0 12px;
  font-family: var(--xb-font-head);
  font-size: .74rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--xb-mist);
}

.page-privacy .privacy-related__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(35, 43, 77, .9);
}

.page-privacy .privacy-related__list li {
  border-bottom: 1px solid rgba(35, 43, 77, .9);
}

.page-privacy .privacy-related__list a {
  display: block;
  padding: 13px 0;
  color: #C7CDE2;
  border-bottom: 0;
  font-size: .92rem;
  text-decoration: none;
  transition: color .2s var(--xb-ease), padding-left .2s var(--xb-ease);
}

.page-privacy .privacy-related__list a:hover,
.page-privacy .privacy-related__list a:focus-visible {
  color: var(--xb-amber);
  padding-left: 6px;
}

/* 平板及以上 */
@media (min-width: 720px) {
  .page-privacy .privacy-hero {
    padding-top: calc(var(--xb-header-h) + 52px);
  }

  .page-privacy .privacy-hero__points {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-privacy .privacy-hero__points li {
    padding: 18px 20px 20px 20px;
    border-bottom: 1px solid var(--xb-hair);
    border-right: 1px solid var(--xb-hair);
  }

  .page-privacy .privacy-hero__points li:last-child {
    border-right: 0;
  }

  .page-privacy .privacy-hero__points li::before {
    left: 20px;
    top: 44px;
  }

  .page-privacy .privacy-items {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-privacy .privacy-related__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
  }
}

/* 桌面：正文左侧、章节窄栏右侧固定 */
@media (min-width: 1000px) {
  .page-privacy .privacy-layout {
    grid-template-columns: minmax(0, 1fr) var(--privacy-rail-w);
    column-gap: 56px;
    padding-top: 56px;
    padding-bottom: 96px;
    align-items: start;
  }

  .page-privacy .privacy-rail {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: calc(var(--xb-header-h) + 28px);
  }

  .page-privacy .privacy-rail__list {
    flex-direction: column;
    overflow-x: visible;
    padding-bottom: 0;
    gap: 1px;
  }

  .page-privacy .privacy-rail__link {
    border: 0;
    border-left: 1px solid var(--xb-steel);
    padding: 8px 0 8px 12px;
    white-space: normal;
  }

  .page-privacy .privacy-rail__link:hover,
  .page-privacy .privacy-rail__link:focus-visible {
    border-left-color: var(--xb-amber);
    background: transparent;
  }

  .page-privacy .privacy-body {
    grid-column: 1;
    grid-row: 1;
  }

  .page-privacy .privacy-block {
    padding: 44px 0 38px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .privacy-rail__link,
  .page-privacy .privacy-related__list a {
    transition: none;
  }
}