/* ===================== 隐私中心 · 页面专属样式 ===================== */
.page-privacy {
  --pv-measure: 640px;
  --pv-rule: rgba(42, 60, 99, 0.72);
  position: relative;
  color: var(--ab-ink);
  background: var(--ab-night);
}

/* ---------- 阅读进度（滚动驱动，不支持时静默隐藏） ---------- */
.page-privacy .pv-progress {
  display: none;
}

@supports (animation-timeline: scroll()) {
  .page-privacy .pv-progress {
    display: block;
    position: fixed;
    top: 0;
    right: 0;
    width: 3px;
    height: 100vh;
    z-index: 55;
    transform: scaleY(0);
    transform-origin: top center;
    background: linear-gradient(180deg, var(--ab-path) 0%, var(--ab-path-soft) 100%);
    pointer-events: none;
    animation: pv-progress-grow linear both;
    animation-timeline: scroll(root block);
  }

  @keyframes pv-progress-grow {
    to {
      transform: scaleY(1);
    }
  }
}

/* ---------- 面包屑 ---------- */
.page-privacy .pv-crumbs {
  padding-top: clamp(20px, 3vw, 32px);
  padding-bottom: 4px;
}

/* ---------- 首屏 ---------- */
.page-privacy .pv-hero {
  padding: clamp(20px, 3vw, 40px) 0 clamp(32px, 5vw, 64px);
}

.page-privacy .pv-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-privacy .pv-hero .kicker {
  display: block;
  margin: 0 0 14px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.24em;
  color: var(--ab-path);
}

.page-privacy .pv-hero h1 {
  margin: 0 0 20px;
  font-size: clamp(34px, 5.6vw, 62px);
  line-height: 1.08;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ab-ink);
}

.page-privacy .pv-hero__lead {
  margin: 0 0 24px;
  max-width: 50ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ab-mist);
}

.page-privacy .pv-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- 图 ---------- */
.page-privacy .pv-figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--ab-steel);
  background: var(--ab-stand);
}

.page-privacy .pv-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.page-privacy .pv-figure::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--ab-path) 0%, rgba(34, 224, 214, 0) 88%);
}

/* ---------- 章节路径带 ---------- */
.page-privacy .pv-rail {
  padding: clamp(10px, 2vw, 20px) 0 clamp(26px, 4vw, 44px);
}

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

.page-privacy .pv-rail__item {
  position: relative;
  flex: 1 0 136px;
  padding-top: 36px;
}

.page-privacy .pv-rail__item::before {
  content: "";
  position: absolute;
  top: 10px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--ab-steel);
}

.page-privacy .pv-rail__item:first-child::before {
  left: 10px;
}

.page-privacy .pv-rail__item:last-child::before {
  right: calc(100% - 10px);
}

.page-privacy .pv-rail__dot {
  position: absolute;
  top: 4px;
  left: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--ab-path);
  box-shadow: 0 0 0 4px rgba(34, 224, 214, 0.16);
  animation: pv-node-lit 0.5s var(--ab-ease) both;
}

.page-privacy .pv-rail__item:nth-child(1) .pv-rail__dot { animation-delay: 0.1s; }
.page-privacy .pv-rail__item:nth-child(2) .pv-rail__dot { animation-delay: 0.2s; }
.page-privacy .pv-rail__item:nth-child(3) .pv-rail__dot { animation-delay: 0.3s; }
.page-privacy .pv-rail__item:nth-child(4) .pv-rail__dot { animation-delay: 0.4s; }
.page-privacy .pv-rail__item:nth-child(5) .pv-rail__dot { animation-delay: 0.5s; }

@keyframes pv-node-lit {
  0% {
    transform: scale(0.55);
    background: var(--ab-stand);
    box-shadow: 0 0 0 0 rgba(34, 224, 214, 0);
  }
  100% {
    transform: scale(1);
    background: var(--ab-path);
    box-shadow: 0 0 0 4px rgba(34, 224, 214, 0.16);
  }
}

.page-privacy .pv-rail__link {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding-right: 14px;
  text-decoration: none;
  color: inherit;
}

.page-privacy .pv-rail__num {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--ab-path);
}

.page-privacy .pv-rail__label {
  margin-top: 3px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ab-ink);
  white-space: nowrap;
  transition: color 0.16s var(--ab-ease);
}

.page-privacy .pv-rail__link:hover .pv-rail__label,
.page-privacy .pv-rail__link:focus-visible .pv-rail__label {
  color: var(--ab-path-soft);
}

.page-privacy .pv-rail__link:focus-visible {
  outline: 1px solid var(--ab-path);
  outline-offset: 4px;
}

/* ---------- 章节通用 ---------- */
.page-privacy .pv-section {
  padding: clamp(36px, 5vw, 72px) 0;
  border-top: 1px solid var(--pv-rule);
}

.page-privacy .pv-section--last {
  padding-bottom: clamp(40px, 5vw, 76px);
}

.page-privacy .pv-sec {
  max-width: 1040px;
}

.page-privacy .pv-sec__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-privacy .pv-sec__idx {
  flex: none;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--ab-path);
}

.page-privacy .pv-sec__title {
  margin: 0;
  font-size: clamp(22px, 2.9vw, 32px);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--ab-ink);
}

.page-privacy .pv-sec__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
}

.page-privacy .pv-sec__main > p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ab-ink);
}

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

.page-privacy .pv-note-line {
  margin-top: 20px !important;
  font-size: 14px !important;
  color: var(--ab-mist) !important;
}

.page-privacy .pv-quote {
  margin: 22px 0;
  padding: 16px 20px;
  background: var(--ab-stand);
  border-left: 2px solid var(--ab-path);
  font-size: 16px;
  line-height: 1.85;
  color: var(--ab-ink);
}

/* ---------- 边注 ---------- */
.page-privacy .pv-sec__aside {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-privacy .pv-tag {
  position: relative;
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  padding: 5px 12px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ab-path);
  background: rgba(34, 224, 214, 0.07);
  border-left: 1px solid var(--ab-path);
  cursor: help;
  outline: none;
}

.page-privacy .pv-tag:hover,
.page-privacy .pv-tag:focus {
  background: rgba(34, 224, 214, 0.14);
}

.page-privacy .pv-tag__pop {
  position: absolute;
  left: 0;
  top: calc(100% + 8px);
  width: min(260px, 78vw);
  padding: 10px 12px;
  font-size: 12px;
  line-height: 1.75;
  letter-spacing: 0;
  text-align: left;
  color: var(--ab-ink);
  background: var(--ab-stand);
  border: 1px solid var(--ab-path);
  box-shadow: var(--ab-shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.18s var(--ab-ease), transform 0.18s var(--ab-ease), visibility 0.18s;
  z-index: 8;
}

.page-privacy .pv-tag__pop a {
  color: var(--ab-path-soft);
}

.page-privacy .pv-tag:hover .pv-tag__pop,
.page-privacy .pv-tag:focus .pv-tag__pop,
.page-privacy .pv-tag:focus-within .pv-tag__pop {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ---------- 字段行 ---------- */
.page-privacy .pv-rows {
  margin: 0 0 6px;
  padding: 0;
  list-style: none;
}

.page-privacy .pv-rows__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--pv-rule);
}

.page-privacy .pv-rows__item:first-child {
  border-top: 1px solid var(--pv-rule);
}

.page-privacy .pv-rows__key {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ab-path);
}

.page-privacy .pv-rows__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ab-mist);
}

.page-privacy .pv-rows__desc .mono {
  color: var(--ab-ink);
}

/* ---------- 使用目的（编号块） ---------- */
.page-privacy .pv-uses {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: pv-use;
  display: grid;
  gap: 20px;
}

.page-privacy .pv-uses__item {
  counter-increment: pv-use;
  position: relative;
  padding-left: 46px;
}

.page-privacy .pv-uses__item::before {
  content: counter(pv-use, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  font-family: var(--ab-mono);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  color: var(--ab-ink-deep);
  background: var(--ab-path);
}

.page-privacy .pv-uses__title {
  margin: 0 0 6px;
  font-size: 18px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--ab-ink);
}

.page-privacy .pv-uses__item p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ab-mist);
}

/* ---------- 联系方式块 ---------- */
.page-privacy .pv-contact {
  margin-top: 26px;
  padding: 22px 22px 20px;
  border: 1px solid var(--ab-steel);
  border-top: 2px solid var(--ab-amber);
  background: linear-gradient(180deg, rgba(11, 23, 48, 0.95) 0%, rgba(5, 11, 30, 0.95) 100%);
}

.page-privacy .pv-contact__lead {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ab-ink);
}

.page-privacy .pv-contact__list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-privacy .pv-contact__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(42, 60, 99, 0.5);
}

.page-privacy .pv-contact__list li:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.page-privacy .pv-contact__k {
  flex: none;
  min-width: 44px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--ab-amber);
}

.page-privacy .pv-contact__v {
  font-size: 14px;
  line-height: 1.6;
  color: var(--ab-ink);
  font-variant-numeric: tabular-nums;
  word-break: break-all;
}

.page-privacy .pv-contact__tip {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--ab-mist);
}

/* ---------- 相关页面 ---------- */
.page-privacy .pv-tail {
  padding: clamp(32px, 4vw, 56px) 0 clamp(44px, 6vw, 80px);
  border-top: 1px solid var(--pv-rule);
}

.page-privacy .pv-tail__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-privacy .pv-tail__card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 20px 22px;
  border: 1px solid var(--ab-steel);
  background: var(--ab-stand);
  color: inherit;
  text-decoration: none;
  transition: transform 0.16s var(--ab-ease), border-color 0.16s var(--ab-ease);
}

.page-privacy .pv-tail__card:hover,
.page-privacy .pv-tail__card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--ab-path);
}

.page-privacy .pv-tail__k {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--ab-path);
}

.page-privacy .pv-tail__t {
  font-size: 17px;
  line-height: 1.4;
  font-weight: 700;
  color: var(--ab-ink);
}

.page-privacy .pv-tail__d {
  font-size: 14px;
  line-height: 1.8;
  color: var(--ab-mist);
}

.page-privacy .pv-tail__more {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ab-mist);
}

.page-privacy .pv-tail__more a {
  color: var(--ab-path);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 224, 214, 0.4);
}

.page-privacy .pv-tail__more a:hover {
  color: var(--ab-path-soft);
  border-bottom-color: var(--ab-path-soft);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-privacy .pv-rows__item {
    grid-template-columns: 152px minmax(0, 1fr);
    gap: 22px;
    align-items: start;
    padding: 20px 0;
  }

  .page-privacy .pv-rows__key {
    padding-top: 3px;
  }

  .page-privacy .pv-tail__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (min-width: 900px) {
  .page-privacy .pv-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
  }
}

@media (min-width: 1000px) {
  .page-privacy .pv-sec__grid {
    grid-template-columns: minmax(0, var(--pv-measure)) minmax(150px, 1fr);
    gap: clamp(40px, 6vw, 88px);
    align-items: start;
  }

  .page-privacy .pv-sec__aside {
    padding-top: 6px;
  }
}

@media (max-width: 719px) {
  .page-privacy .pv-rail__item {
    flex: 0 0 auto;
    min-width: 108px;
    padding-right: 16px;
  }

  .page-privacy .pv-rail__item:last-child::before {
    right: calc(100% - 10px);
  }
}

/* ---------- 动效收敛 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-privacy .pv-progress {
    display: none;
  }

  .page-privacy .pv-rail__dot {
    animation: none;
    background: var(--ab-path);
    box-shadow: 0 0 0 4px rgba(34, 224, 214, 0.16);
  }

  .page-privacy .pv-rail__label,
  .page-privacy .pv-tag__pop,
  .page-privacy .pv-tail__card {
    transition: none;
  }

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