/* ===== 数据与隐私 · 页面专属样式 ===== */
.page-privacy {
  --pv-rule: rgba(11, 22, 36, .16);
  --pv-rule-soft: rgba(11, 22, 36, .08);
  --pv-body-text: var(--ink-700);
  --pv-measure: 46rem;
  display: block;
  background: var(--ink-900);
  color: var(--paper-050);
}

/* ---------- 首屏 ---------- */
.page-privacy .pv-hero {
  position: relative;
  overflow: hidden;
  padding: 20px 0 clamp(28px, 5vw, 50px);
  background:
    radial-gradient(120% 100% at 88% -10%, rgba(31, 182, 201, .18), transparent 55%),
    radial-gradient(80% 90% at 0% 110%, rgba(215, 38, 61, .16), transparent 58%),
    var(--ink-900);
  border-bottom: 1px solid var(--line);
}

.page-privacy .pv-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(107, 122, 143, .09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(107, 122, 143, .09) 1px, transparent 1px);
  background-size: 28px 28px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .95), transparent 82%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .95), transparent 82%);
}

.page-privacy .pv-hero > .u-shell {
  position: relative;
  z-index: 1;
}

.page-privacy .pv-hero h1 {
  margin: 12px 0 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(29px, 6.4vw, 48px);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-privacy .pv-hero__lead {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 2.3vw, 17.5px);
  line-height: 1.78;
  color: rgba(247, 241, 230, .78);
}

.page-privacy .pv-hero__meta {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  overflow: hidden;
}

.page-privacy .pv-hero__meta-item {
  min-width: 0;
  padding: 12px 14px;
  display: grid;
  gap: 5px;
  background: var(--ink-800);
}

.page-privacy .pv-hero__meta-key {
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--mist-500);
}

.page-privacy .pv-hero__meta-val {
  font-size: 14px;
  line-height: 1.55;
  color: var(--white);
  overflow-wrap: anywhere;
}

/* ---------- 首屏视觉 ---------- */
.page-privacy .pv-visual {
  margin: 0;
  background: var(--ink-800);
  border-bottom: 1px solid var(--line);
}

.page-privacy .pv-visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 7 / 3;
  object-fit: cover;
}

/* ---------- 阅读区 ---------- */
.page-privacy .pv-body {
  padding: clamp(34px, 6vw, 78px) 0 clamp(54px, 9vw, 104px);
  background-color: var(--paper-050);
  background-image:
    linear-gradient(rgba(11, 22, 36, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 22, 36, .035) 1px, transparent 1px);
  background-size: 28px 28px;
  color: var(--ink-900);
}

.page-privacy .pv-layout {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

/* ---------- 章节导航 ---------- */
.page-privacy .pv-toc {
  padding: 16px 16px 14px;
  border: 1px solid var(--pv-rule);
  border-radius: var(--r-m);
  background: rgba(235, 225, 206, .58);
}

.page-privacy .pv-toc__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--mist-500);
}

.page-privacy .pv-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-privacy .pv-toc__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 9px 10px;
  border-radius: var(--r-s);
  font-size: 14.5px;
  line-height: 1.45;
  color: var(--ink-700);
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-privacy .pv-toc__link:hover,
.page-privacy .pv-toc__link:focus-visible {
  background: rgba(11, 22, 36, .08);
  color: var(--red-600);
}

.page-privacy .pv-toc__num {
  font-size: 12px;
  color: var(--red-600);
}

/* ---------- 条款正文 ---------- */
.page-privacy .pv-doc {
  display: grid;
  gap: clamp(32px, 5vw, 54px);
  max-width: var(--pv-measure);
}

.page-privacy .pv-version {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 14px;
  padding: 13px 16px;
  border: 1px solid var(--pv-rule);
  border-left: 3px solid var(--red-600);
  border-radius: 0 var(--r-m) var(--r-m) 0;
  background: rgba(255, 255, 255, .62);
}

.page-privacy .pv-version__code {
  flex: none;
  font-size: 15px;
  font-weight: 700;
  color: var(--red-600);
  -webkit-user-select: all;
  user-select: all;
}

.page-privacy .pv-version__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--pv-body-text);
}

.page-privacy .pv-sec {
  scroll-margin-top: 92px;
}

.page-privacy .pv-sec__head {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--pv-rule);
}

.page-privacy .pv-sec__num {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--red-600);
}

.page-privacy .pv-sec__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 3.6vw, 26px);
  line-height: 1.32;
  letter-spacing: -.005em;
  color: var(--ink-900);
}

.page-privacy .pv-sec p {
  margin: 0 0 15px;
  font-size: 16px;
  line-height: 1.82;
  color: var(--pv-body-text);
  overflow-wrap: break-word;
}

.page-privacy .pv-sec p:last-child {
  margin-bottom: 0;
}

.page-privacy .pv-list {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-privacy .pv-list > li {
  position: relative;
  padding-left: 20px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--pv-body-text);
}

.page-privacy .pv-list > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--cyan-500);
}

.page-privacy .pv-list > li:nth-child(2)::before { background: var(--gold-400); }
.page-privacy .pv-list > li:nth-child(3)::before { background: var(--green-500); }
.page-privacy .pv-list > li:nth-child(4)::before { background: var(--red-600); }
.page-privacy .pv-list > li:nth-child(5)::before { background: var(--ink-600); }

.page-privacy .pv-note {
  margin: 20px 0 0;
  padding: 14px 16px;
  border-left: 3px solid var(--gold-400);
  border-radius: 0 var(--r-m) var(--r-m) 0;
  background: rgba(224, 165, 38, .14);
}

.page-privacy .pv-note p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-800);
}

/* ---------- 折叠说明 ---------- */
.page-privacy .pv-fold {
  margin: 20px 0 16px;
  border: 1px solid var(--pv-rule);
  border-radius: var(--r-m);
  background: rgba(255, 255, 255, .6);
  overflow: hidden;
}

.page-privacy .pv-fold > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 16px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink-900);
  cursor: pointer;
  list-style: none;
}

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

.page-privacy .pv-fold > summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan-500);
}

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

.page-privacy .pv-fold__body {
  padding: 0 16px 16px;
}

.page-privacy .pv-fold__body p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--pv-body-text);
}

.page-privacy .pv-fold__body p:last-child { margin-bottom: 0; }

/* ---------- 数据流示意 ---------- */
.page-privacy .pv-flow {
  margin: 22px 0 0;
  padding: 16px;
  border: 1px solid var(--pv-rule);
  border-radius: var(--r-m);
  background: rgba(255, 255, 255, .58);
}

.page-privacy .pv-flow__scroll {
  overflow-x: auto;
}

.page-privacy .pv-flow__svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-privacy .pv-flow figcaption {
  margin-top: 12px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--mist-500);
}

/* ---------- 联系渠道 ---------- */
.page-privacy .pv-channels {
  list-style: none;
  margin: 4px 0 18px;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--pv-rule);
  border: 1px solid var(--pv-rule);
  border-radius: var(--r-m);
  overflow: hidden;
}

.page-privacy .pv-channels__item {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, .72);
}

.page-privacy .pv-channels__label {
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist-500);
}

.page-privacy .pv-channels__value {
  font-size: 15.5px;
  line-height: 1.5;
  color: var(--ink-900);
  overflow-wrap: anywhere;
}

.page-privacy .pv-channels__hint {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--pv-body-text);
}

/* ---------- 延伸入口与回顶 ---------- */
.page-privacy .pv-more {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--pv-rule-soft);
}

.page-privacy .pv-more__link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 9px 16px;
  border: 1px solid var(--pv-rule);
  border-radius: var(--r-pill);
  font-size: 14px;
  line-height: 1.4;
  color: var(--ink-800);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-privacy .pv-more__link:hover,
.page-privacy .pv-more__link:focus-visible {
  border-color: var(--red-600);
  background: rgba(215, 38, 61, .08);
  color: var(--red-600);
}

.page-privacy .pv-top {
  margin: 18px 0 0;
}

.page-privacy .pv-top__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--mist-500);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-privacy .pv-top__link:hover,
.page-privacy .pv-top__link:focus-visible {
  color: var(--ink-900);
  border-bottom-color: var(--ink-900);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-privacy .pv-hero__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 940px) {
  .page-privacy .pv-layout {
    grid-template-columns: 248px minmax(0, 1fr);
    align-items: start;
  }

  .page-privacy .pv-toc {
    position: sticky;
    top: 88px;
  }

  .page-privacy .pv-hero {
    padding-bottom: 56px;
  }
}

@media (max-width: 699px) {
  .page-privacy .pv-flow__svg {
    min-width: 520px;
  }

  .page-privacy .pv-more__link {
    flex: 1 1 calc(50% - 10px);
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .pv-toc__link,
  .page-privacy .pv-more__link,
  .page-privacy .pv-top__link {
    transition: none;
  }
}