.page-privacy {
  --priv-rule: rgba(154, 166, 173, 0.42);
  --priv-rule-soft: rgba(154, 166, 173, 0.22);
  background: var(--paper);
  color: var(--text);
}

/* ---------- 深色标题区 ---------- */
.page-privacy .priv-head {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 84% 8%, rgba(23, 162, 214, 0.24), transparent 58%),
    radial-gradient(circle at 12% 96%, rgba(255, 106, 69, 0.14), transparent 52%),
    var(--ink);
  color: var(--text-inv);
  padding: 34px 0 48px;
}

.page-privacy .priv-head .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--mist);
  margin: 0 0 34px;
}

.page-privacy .priv-head .breadcrumb .link {
  color: var(--lake-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-micro) linear, color var(--dur-micro) linear;
}

.page-privacy .priv-head .breadcrumb .link:hover,
.page-privacy .priv-head .breadcrumb .link:focus-visible {
  border-bottom-color: var(--lake-soft);
}

.page-privacy .priv-head__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: end;
}

.page-privacy .priv-kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 20px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-privacy .priv-kicker .idx {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.page-privacy .priv-head__title {
  margin: 0 0 22px;
  max-width: 15em;
  font-size: clamp(33px, 5.6vw, 62px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--text-inv);
}

.page-privacy .priv-head__lede {
  max-width: 34em;
  margin: 0;
  font-size: 17px;
  line-height: 1.85;
  color: rgba(232, 238, 242, 0.82);
}

.page-privacy .priv-head__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 0 100%);
  background: var(--lake-deep);
}

.page-privacy .priv-head__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: saturate(0.72) contrast(1.04);
}

.page-privacy .priv-head__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(10, 22, 34, 0.34) 0%, rgba(10, 22, 34, 0) 58%),
    rgba(154, 166, 173, 0.12);
}

/* ---------- 正文区 ---------- */
.page-privacy .priv-body {
  padding: 44px 0 72px;
}

.page-privacy .priv-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

/* 索引轨道 */
.page-privacy .priv-rail {
  display: flex;
  flex-direction: row;
  gap: 6px;
  overflow-x: auto;
  padding: 0 0 12px;
  border-bottom: 2px solid var(--paper-2);
  scrollbar-width: thin;
}

.page-privacy .priv-rail .anchor-rail__item {
  flex: none;
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 8px 12px;
  white-space: nowrap;
  text-decoration: none;
  color: var(--lake-deep);
  font-size: 14px;
  line-height: 1.5;
  border-left: 3px solid transparent;
  transition:
    background var(--dur-micro) linear,
    color var(--dur-micro) linear,
    border-color var(--dur-micro) linear;
}

.page-privacy .priv-rail .anchor-rail__num {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
  transition: color var(--dur-micro) linear;
}

.page-privacy .priv-rail .anchor-rail__item:hover {
  background: var(--paper-2);
  color: var(--text);
}

.page-privacy .priv-rail .anchor-rail__item:focus-visible {
  outline: 2px solid var(--lemon);
  outline-offset: 2px;
}

.page-privacy .priv-rail .anchor-rail__item[aria-current] {
  color: var(--text);
  background: rgba(242, 209, 75, 0.24);
  border-left-color: var(--lemon);
}

.page-privacy .priv-rail .anchor-rail__item[aria-current] .anchor-rail__num {
  color: var(--lake-deep);
}

/* 正文列 */
.page-privacy .priv-article {
  max-width: 34em;
}

.page-privacy .expand-group {
  position: relative;
  margin: 0 0 6px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--priv-rule);
}

.page-privacy .expand-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 22px 34px 14px 0;
  cursor: pointer;
  list-style: none;
}

.page-privacy .expand-group__head::-webkit-details-marker {
  display: none;
}

.page-privacy .expand-group__head:focus-visible {
  outline: 2px solid var(--lemon);
  outline-offset: 4px;
}

.page-privacy .expand-group__num {
  flex: none;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--lake-deep);
}

.page-privacy .expand-group__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.5vw, 26px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-privacy .expand-group__arrow {
  position: absolute;
  right: 2px;
  top: 30px;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--mist);
  border-bottom: 2px solid var(--mist);
  transform: rotate(45deg);
  transition:
    transform var(--dur-expand) var(--ease-in),
    border-color var(--dur-micro) linear;
}

.page-privacy .expand-group[open] .expand-group__arrow {
  transform: rotate(-135deg) translate(-3px, -3px);
  border-color: var(--coral);
}

.page-privacy .expand-group__body {
  padding: 2px 0 4px;
}

/* 术语对 */
.page-privacy .priv-terms {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  margin: 0;
}

.page-privacy .priv-terms dt {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.01em;
  color: var(--lake-deep);
}

.page-privacy .priv-terms dd {
  margin: 0;
  font-size: 17px;
  line-height: 1.85;
  color: var(--text);
}

/* 强调块 */
.page-privacy .priv-callout {
  margin: 22px 0 0;
  padding: 15px 17px;
  border-left: 3px solid var(--lemon);
  background: rgba(242, 209, 75, 0.16);
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text);
}

/* 底部收束 */
.page-privacy .priv-tail {
  margin-top: 26px;
  padding-top: 26px;
  border-top: 1px solid var(--priv-rule-soft);
}

.page-privacy .priv-tail p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--lake-deep);
}

.page-privacy .priv-tail .link {
  color: var(--lake-deep);
  text-decoration: none;
  border-bottom: 1px solid var(--lake);
  transition: color var(--dur-micro) linear, border-color var(--dur-micro) linear;
}

.page-privacy .priv-tail .link:hover,
.page-privacy .priv-tail .link:focus-visible {
  color: var(--coral);
  border-bottom-color: var(--coral);
}

/* ---------- 中等屏 ---------- */
@media (min-width: 720px) {
  .page-privacy .priv-head {
    padding: 44px 0 62px;
  }

  .page-privacy .priv-terms {
    grid-template-columns: 128px minmax(0, 1fr);
    column-gap: 22px;
    row-gap: 0;
  }

  .page-privacy .priv-terms dt {
    margin-top: 16px;
    padding-top: 2px;
  }

  .page-privacy .priv-terms dd {
    margin-top: 16px;
  }

  .page-privacy .expand-group__head {
    padding-right: 40px;
  }

  .page-privacy .expand-group__body {
    padding-left: 34px;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1000px) {
  .page-privacy .priv-head__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
  }

  .page-privacy .priv-head__media {
    clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 0 100%);
  }

  .page-privacy .priv-body {
    padding: 72px 0 108px;
  }

  .page-privacy .priv-layout {
    grid-template-columns: 216px minmax(0, 34em);
    gap: 64px;
    align-items: start;
  }

  .page-privacy .priv-rail {
    position: sticky;
    top: 96px;
    flex-direction: column;
    overflow: visible;
    gap: 0;
    padding: 0;
    border-bottom: 0;
    border-left: 2px solid var(--paper-2);
  }

  .page-privacy .priv-rail .anchor-rail__item {
    margin-left: -2px;
    padding: 10px 10px 10px 14px;
    white-space: normal;
  }

  .page-privacy .priv-rail .anchor-rail__item:hover {
    background: var(--paper-2);
  }

  .page-privacy .expand-group__body {
    padding-left: 34px;
  }
}

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-privacy .expand-group__arrow,
  .page-privacy .priv-rail .anchor-rail__item,
  .page-privacy .priv-rail .anchor-rail__num,
  .page-privacy .priv-tail .link {
    transition-duration: 120ms;
  }
}
<<<END>>>