/* ==========================================================================
   数据与隐私 · /data-privacy/
   作用域：.page-privacy
   ========================================================================== */

.page-privacy {
  --pv-measure: 720px;
  --pv-head-max: 860px;
  --pv-gutter: 20px;
  --pv-watermark: rgba(18, 54, 95, .07);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16.5px;
  line-height: 1.9;
  padding-bottom: 96px;
}

/* ---------- 页首 ---------- */

.page-privacy .pv-head {
  position: relative;
  isolation: isolate;
  padding: 64px 0 44px;
}

.page-privacy .pv-head::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(242, 104, 31, .13) 0 1px, transparent 1px 36px),
    repeating-linear-gradient(0deg, rgba(18, 54, 95, .09) 0 1px, transparent 1px 36px);
  -webkit-mask-image: radial-gradient(130% 105% at 10% 0%, #000 0%, rgba(0, 0, 0, .35) 52%, transparent 78%);
  mask-image: radial-gradient(130% 105% at 10% 0%, #000 0%, rgba(0, 0, 0, .35) 52%, transparent 78%);
}

.page-privacy .pv-head__inner {
  max-width: var(--pv-head-max);
  margin-inline: auto;
  padding-inline: var(--pv-gutter);
}

.page-privacy .pv-head .crumbs {
  margin-bottom: 34px;
}

.page-privacy .pv-eyebrow {
  display: block;
  margin: 0 0 16px;
  color: var(--orange);
}

.page-privacy .pv-title {
  margin: 0 0 22px;
  font-size: clamp(31px, 6.4vw, 62px);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -.03em;
  color: var(--navy);
  overflow-wrap: break-word;
}

.page-privacy .pv-lede {
  max-width: 640px;
  margin: 0;
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink);
}

/* ---------- 页首配图 ---------- */

.page-privacy .pv-hero-media {
  max-width: var(--pv-head-max);
  margin: 8px auto 0;
  padding-inline: var(--pv-gutter);
}

.page-privacy .pv-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 600;
  object-fit: cover;
  border-radius: var(--r-lg);
  border: 1px solid var(--line-soft);
}

.page-privacy .pv-hero-cap {
  margin: 14px 2px 0;
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: .04em;
  color: rgba(70, 86, 106, .8);
}

/* ---------- 章节目录 ---------- */

.page-privacy .pv-toc {
  max-width: var(--pv-measure);
  margin: 34px auto 0;
  padding: 0 var(--pv-gutter);
}

.page-privacy .pv-toc > summary {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
  padding: 0 2px;
  list-style: none;
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .16em;
  color: var(--navy);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line-soft);
}

.page-privacy .pv-toc > summary::-webkit-details-marker {
  display: none;
}

.page-privacy .pv-toc > summary::after {
  content: "＋";
  margin-left: auto;
  font-size: 15px;
  color: var(--orange);
}

.page-privacy .pv-toc[open] > summary {
  border-bottom-color: transparent;
}

.page-privacy .pv-toc[open] > summary::after {
  content: "－";
}

.page-privacy .pv-toc ol {
  list-style: none;
  margin: 0;
  padding: 6px 0 0;
  display: grid;
  gap: 0;
}

.page-privacy .pv-toc li + li {
  border-top: 1px solid var(--line-soft);
}

.page-privacy .pv-toc a {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 46px;
  padding: 10px 2px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink);
  text-decoration: none;
  transition: color .2s ease, background-color .2s ease;
}

.page-privacy .pv-toc a:hover,
.page-privacy .pv-toc a:focus-visible {
  color: var(--orange);
}

.page-privacy .pv-toc__n {
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

/* ---------- 正文分节 ---------- */

.page-privacy .pv-doc {
  max-width: var(--pv-measure);
  margin-inline: auto;
  padding-inline: var(--pv-gutter);
}

.page-privacy .pv-sec {
  position: relative;
  padding: 52px 0 40px;
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--bar-h) + 16px);
}

.page-privacy .pv-doc > .pv-sec:first-of-type {
  border-top: 0;
  padding-top: 44px;
}

.page-privacy .pv-sec__num {
  position: absolute;
  top: 40px;
  right: 0;
  z-index: 0;
  font-size: clamp(54px, 9vw, 104px);
  font-weight: 700;
  line-height: .78;
  letter-spacing: -.06em;
  color: var(--pv-watermark);
  font-variant-numeric: tabular-nums;
  pointer-events: none;
  user-select: none;
}

.page-privacy .pv-sec > *:not(.pv-sec__num) {
  position: relative;
  z-index: 1;
}

.page-privacy .pv-sec .index-label {
  display: block;
  margin: 0 0 12px;
  color: rgba(70, 86, 106, .72);
}

.page-privacy .pv-sec__title {
  margin: 0 0 20px;
  font-size: clamp(25px, 3.4vw, 36px);
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -.02em;
  color: var(--navy);
}

.page-privacy .pv-lead-in {
  margin: 0;
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--ink);
}

.page-privacy .pv-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-privacy .pv-list li {
  position: relative;
  padding-left: 24px;
  font-size: 16px;
  line-height: 1.86;
}

.page-privacy .pv-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .78em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange-soft);
  box-shadow: 0 0 0 4px rgba(242, 104, 31, .1);
}

.page-privacy .pv-list strong {
  color: var(--navy);
  font-weight: 700;
}

.page-privacy .pv-note {
  margin: 28px 0 0;
  padding: 2px 0 2px 16px;
  border-left: 3px solid rgba(242, 104, 31, .42);
  font-size: 14px;
  line-height: 1.8;
  color: rgba(70, 86, 106, .88);
}

/* ---------- 延伸入口 ---------- */

.page-privacy .pv-next {
  max-width: var(--pv-measure);
  margin: 24px auto 0;
  padding: 32px var(--pv-gutter) 0;
  border-top: 1px solid var(--line);
}

.page-privacy .pv-next .index-label {
  margin: 0 0 16px;
  color: var(--navy);
}

.page-privacy .pv-next__row {
  display: grid;
  gap: 10px;
}

.page-privacy .pv-next__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 48px;
  padding: 12px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--mist);
  color: var(--navy);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: border-color .2s ease, transform .2s ease, background-color .2s ease;
}

.page-privacy .pv-next__link:hover,
.page-privacy .pv-next__link:focus-visible {
  border-color: var(--orange);
  background: var(--sand);
  transform: translateY(-3px);
}

.page-privacy .pv-next__arrow {
  color: var(--orange);
  font-size: 17px;
}

/* ---------- 返回顶部 ---------- */

.page-privacy .pv-top {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 30;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--on-dark);
  font-size: 18px;
  line-height: 1;
  text-decoration: none;
  border: 1px solid rgba(241, 245, 249, .22);
  transition: background-color .2s ease, transform .2s ease;
}

.page-privacy .pv-top:hover,
.page-privacy .pv-top:focus-visible {
  background: var(--orange);
  color: #FFFFFF;
  transform: translateY(-3px);
}

/* ---------- 焦点可见性 ---------- */

.page-privacy a:focus-visible,
.page-privacy summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
  border-radius: 6px;
}

/* ---------- 900px 以上：目录摊平、节距放宽 ---------- */

@media (min-width: 900px) {
  .page-privacy {
    --pv-gutter: 28px;
  }

  .page-privacy .pv-head {
    padding-top: 88px;
    padding-bottom: 56px;
  }

  .page-privacy .pv-toc {
    margin-top: 44px;
  }

  .page-privacy .pv-toc > summary {
    display: none;
  }

  .page-privacy .pv-toc ol {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    column-gap: 28px;
    row-gap: 0;
    padding-top: 0;
    border-top: 1px solid var(--line);
  }

  .page-privacy .pv-toc li + li {
    border-top: 0;
  }

  .page-privacy .pv-toc li:nth-child(n + 4) {
    border-top: 1px solid var(--line-soft);
  }

  .page-privacy .pv-toc li:nth-child(3n + 2) a,
  .page-privacy .pv-toc li:nth-child(3n + 3) a {
    padding-left: 14px;
  }

  .page-privacy .pv-sec {
    padding: 68px 0 52px;
  }

  .page-privacy .pv-doc > .pv-sec:first-of-type {
    padding-top: 58px;
  }

  .page-privacy .pv-sec__num {
    top: 52px;
    right: -6px;
  }

  .page-privacy .pv-next__row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }

  .page-privacy .pv-next__link {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 8px;
    min-height: 96px;
    padding: 20px;
  }
}

/* ---------- 719px 以下：收紧留白、隐去水印 ---------- */

@media (max-width: 719px) {
  .page-privacy {
    font-size: 16px;
    padding-bottom: 72px;
  }

  .page-privacy .pv-head {
    padding-top: 48px;
    padding-bottom: 34px;
  }

  .page-privacy .pv-head .crumbs {
    margin-bottom: 26px;
  }

  .page-privacy .pv-sec__num {
    display: none;
  }

  .page-privacy .pv-sec {
    padding: 40px 0 30px;
  }

  .page-privacy .pv-list {
    gap: 14px;
  }

  .page-privacy .pv-top {
    right: 14px;
    bottom: 14px;
  }
}

/* ---------- 动效偏好 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-privacy .pv-next__link,
  .page-privacy .pv-top,
  .page-privacy .pv-toc a {
    transition: none;
  }

  .page-privacy .pv-next__link:hover,
  .page-privacy .pv-next__link:focus-visible,
  .page-privacy .pv-top:hover,
  .page-privacy .pv-top:focus-visible {
    transform: none;
  }
}