/* ============================================
   隐私政策页 · page-privacy 作用域
   ============================================ */

.page-privacy {
  --pv-rule: rgba(242, 247, 245, .12);
  --pv-rule-hot: rgba(255, 90, 43, .45);
  --pv-text: rgba(242, 247, 245, .84);
  --pv-text-dim: rgba(143, 163, 176, .95);
  --pv-rail-w: 236px;
  --pv-num-w: 88px;
  --pv-measure: 34em;
  display: block;
  position: relative;
  background-color: var(--ud-ink);
  color: var(--ud-white);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-privacy .pv-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(104px, 16vw, 188px) 0 clamp(46px, 7vw, 80px);
  border-bottom: 3px solid var(--ud-line);
  background:
    radial-gradient(85% 70% at 88% 0%, rgba(53, 242, 201, .11), transparent 60%),
    radial-gradient(62% 58% at 6% 100%, rgba(255, 90, 43, .10), transparent 68%),
    linear-gradient(180deg, #04170f 0%, var(--ud-ink) 82%);
}

.page-privacy .pv-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .17;
  filter: saturate(.5) contrast(1.05);
  pointer-events: none;
}

.page-privacy .pv-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(0deg, rgba(242, 247, 245, .032) 0 1px, transparent 1px 72px),
    repeating-linear-gradient(90deg, rgba(242, 247, 245, .032) 0 1px, transparent 1px 72px);
}

.page-privacy .pv-hero__inner {
  position: relative;
  z-index: 3;
}

.page-privacy .pv-hero__title {
  margin: 18px 0 0;
  font-size: clamp(52px, 11vw, 142px);
  font-weight: 300;
  line-height: .88;
  letter-spacing: -.035em;
  color: var(--ud-white);
}

.page-privacy .pv-hero__lede {
  margin: clamp(22px, 3vw, 34px) 0 0;
  max-width: 34em;
  font-size: clamp(15px, 1.1vw, 17px);
  line-height: 1.9;
  color: var(--pv-text);
}

.page-privacy .pv-hero__meta {
  list-style: none;
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 20px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  border-top: 1px solid var(--pv-rule);
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--ud-steel);
}

.page-privacy .pv-hero__meta li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
}

.page-privacy .pv-hero__meta .ud-mono {
  color: var(--ud-cyan);
  font-size: 14px;
}

/* ---------- 主体骨架：索引 + 正文 ---------- */
.page-privacy .pv-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  padding: clamp(36px, 5vw, 64px) 0 clamp(64px, 9vw, 120px);
}

@media (min-width: 900px) {
  .page-privacy .pv-body {
    grid-template-columns: var(--pv-rail-w) minmax(0, 1fr);
    column-gap: clamp(36px, 5vw, 76px);
    align-items: start;
    padding-top: clamp(48px, 6vw, 86px);
  }
}

/* ---------- 左侧章节索引 ---------- */
.page-privacy .pv-rail__label {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--ud-steel);
}

.page-privacy .pv-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 0 16px;
}

.page-privacy .pv-rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--pv-rule);
  font-size: 14px;
  line-height: 1.5;
  color: var(--pv-text-dim);
  text-decoration: none;
  transition: color .2s var(--ud-ease), padding-left .2s var(--ud-ease);
}

.page-privacy .pv-rail__link:hover,
.page-privacy .pv-rail__link:focus-visible {
  color: var(--ud-cyan);
  padding-left: 6px;
  outline: none;
}

.page-privacy .pv-rail__num {
  font-family: var(--ud-font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--ud-cyan);
  opacity: .78;
}

@media (min-width: 900px) {
  .page-privacy .pv-rail {
    position: sticky;
    top: calc(var(--ud-header-h) + 24px);
    padding-left: 18px;
    border-left: 2px solid var(--ud-cyan-45);
  }

  .page-privacy .pv-rail__list {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }

  .page-privacy .pv-rail__link {
    font-size: 13.5px;
  }
}

/* ---------- 正文文档流 ---------- */
.page-privacy .pv-doc {
  min-width: 0;
}

.page-privacy .pv-sec {
  position: relative;
  padding: clamp(26px, 4vw, 46px) 0;
  border-top: 1px solid var(--pv-rule);
  scroll-margin-top: calc(var(--ud-header-h) + 32px);
}

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

.page-privacy .pv-sec:target {
  border-top-color: var(--pv-rule-hot);
}

.page-privacy .pv-sec__num {
  margin: 0 0 10px;
  font-family: var(--ud-font-mono);
  font-size: 26px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--ud-cyan);
}

.page-privacy .pv-sec__title {
  margin: 0 0 18px;
  font-size: clamp(23px, 3vw, 34px);
  font-weight: 400;
  line-height: 1.28;
  letter-spacing: -.01em;
  color: var(--ud-white);
}

.page-privacy .pv-sec__content > * + * {
  margin-top: 18px;
}

.page-privacy .pv-sec__content p {
  margin: 0;
  max-width: var(--pv-measure);
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--pv-text);
}

@media (min-width: 900px) {
  .page-privacy .pv-sec {
    display: grid;
    grid-template-columns: var(--pv-num-w) minmax(0, 1fr);
    column-gap: 20px;
  }

  .page-privacy .pv-sec__num {
    grid-column: 1;
    grid-row: 1 / span 2;
    align-self: start;
    margin: 8px 0 0;
    font-size: 42px;
  }

  .page-privacy .pv-sec__title {
    grid-column: 2;
    grid-row: 1;
  }

  .page-privacy .pv-sec__content {
    grid-column: 2;
    grid-row: 2;
  }
}

/* ---------- 正文中的列表 ---------- */
.page-privacy .pv-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 13px;
  max-width: var(--pv-measure);
}

.page-privacy .pv-list li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--pv-text);
}

.page-privacy .pv-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 3px;
  height: 1em;
  background: var(--ud-cyan);
}

.page-privacy .pv-em {
  color: var(--ud-white);
  font-weight: 600;
}

/* ---------- 信息类型对照表 ---------- */
.page-privacy .pv-table {
  display: grid;
  max-width: var(--pv-measure);
  border-top: 1px solid var(--pv-rule);
}

.page-privacy .pv-table__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--pv-rule);
}

.page-privacy .pv-table__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

@media (min-width: 640px) {
  .page-privacy .pv-table__row {
    grid-template-columns: minmax(0, .78fr) minmax(0, 1.22fr);
    gap: 22px;
    align-items: baseline;
  }
}

.page-privacy .pv-table__k {
  font-size: 14px;
  letter-spacing: .02em;
  color: var(--ud-white);
}

.page-privacy .pv-table__v {
  font-size: 14px;
  line-height: 1.78;
  color: var(--ud-steel);
}

/* ---------- 提示块 ---------- */
.page-privacy .pv-note {
  max-width: var(--pv-measure);
  padding: 20px 22px;
  background: var(--ud-ink-2);
  border: 1px solid var(--ud-line);
  border-left: 3px solid var(--ud-cyan);
}

.page-privacy .pv-note p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--pv-text);
}

/* ---------- 正文内链接 ---------- */
.page-privacy .pv-link {
  color: var(--ud-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--ud-cyan-45);
  transition: border-color .2s var(--ud-ease), color .2s var(--ud-ease);
}

.page-privacy .pv-link:hover,
.page-privacy .pv-link:focus-visible {
  color: var(--ud-white);
  border-bottom-color: var(--ud-white);
  outline: none;
}

/* ---------- 返回顶部 ---------- */
.page-privacy .pv-top {
  position: fixed;
  right: clamp(14px, 3vw, 32px);
  bottom: max(14px, env(safe-area-inset-bottom, 14px));
  z-index: 40;
  display: inline-flex;
  align-items: center;
  padding: 9px 14px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--ud-ink);
  background: var(--ud-cyan);
  border: 2px solid var(--ud-ink);
  border-radius: var(--ud-radius);
  box-shadow: 4px 4px 0 0 rgba(0, 0, 0, .6);
  text-decoration: none;
  transition: background-color .2s var(--ud-ease), transform .2s var(--ud-ease);
}

.page-privacy .pv-top:hover,
.page-privacy .pv-top:focus-visible {
  background: var(--ud-amber);
  transform: translate(-2px, -2px);
  outline: none;
}

/* ---------- 无障碍与减弱动效 ---------- */
.page-privacy :focus-visible {
  outline: 2px solid var(--ud-cyan);
  outline-offset: 3px;
}

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

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