.page-privacy {
  --pv-rail-w: 252px;
  --pv-gap: clamp(30px, 4.4vw, 68px);
  --pv-scan-h: 420px;
}

/* ---------- 首屏 ---------- */
.page-privacy .pv-hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border-bottom: 1px solid var(--c-line);
  background: linear-gradient(168deg, var(--c-orbit) 0%, var(--c-space) 58%, #0d1638 100%);
  padding: clamp(26px, 4.6vw, 52px) 0 clamp(42px, 7vw, 88px);
}

.page-privacy .pv-hero__canvas {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.page-privacy .pv-hero__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .2;
}

.page-privacy .pv-hero__canvas::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(42, 53, 96, .5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 53, 96, .5) 1px, transparent 1px);
  background-size: 82px 82px;
  -webkit-mask-image: radial-gradient(125% 92% at 76% 8%, #000 0%, transparent 72%);
  mask-image: radial-gradient(125% 92% at 76% 8%, #000 0%, transparent 72%);
  opacity: .75;
}

.page-privacy .pv-hero__scan {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(79, 195, 217, .95) 44%, rgba(242, 193, 78, .75) 72%, transparent);
  animation: pv-scan 5.6s var(--ease) infinite;
}

@keyframes pv-scan {
  0% { transform: translateY(0); opacity: 0; }
  10% { opacity: 1; }
  100% { transform: translateY(var(--pv-scan-h)); opacity: 0; }
}

.page-privacy .pv-hero__inner {
  position: relative;
  z-index: 1;
}

.page-privacy .pv-hero .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-privacy .pv-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.page-privacy .pv-hero h1 {
  margin: 0;
  max-width: 15em;
  font-size: clamp(30px, 6vw, 62px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--c-white);
}

.page-privacy .pv-hero__lede {
  margin: clamp(16px, 2.4vw, 26px) 0 0;
  max-width: 40em;
  color: var(--c-muted);
  font-size: clamp(15px, 1.55vw, 17px);
  line-height: 1.85;
}

.page-privacy .pv-hero__tags {
  list-style: none;
  margin: clamp(20px, 3vw, 34px) 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-privacy .pv-hero__tags li {
  border: 1px solid var(--c-line);
  background: rgba(22, 32, 74, .5);
  color: var(--c-muted);
  font-size: 13px;
  line-height: 1.5;
  padding: 7px 14px;
}

/* ---------- 主体骨架 ---------- */
.page-privacy .pv-body {
  display: grid;
  gap: var(--pv-gap);
  padding-top: clamp(34px, 5vw, 76px);
  padding-bottom: clamp(56px, 8vw, 104px);
}

/* ---------- 章节锚点轨道 ---------- */
.page-privacy .pv-rail {
  padding: 20px 18px 18px;
  background: var(--c-panel);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}

.page-privacy .pv-rail__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-privacy .pv-rail__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-privacy .pv-rail__item {
  flex: 0 0 auto;
}

.page-privacy .pv-rail__item a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 13px;
  border: 1px solid var(--c-line);
  color: var(--c-muted);
  font-size: 14px;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  transition: color .25s var(--ease), border-color .25s var(--ease), background-color .25s var(--ease);
}

.page-privacy .pv-rail__idx {
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--c-gold);
}

.page-privacy .pv-rail__item a:hover,
.page-privacy .pv-rail__item a:focus-visible {
  color: var(--c-white);
  border-color: var(--c-gold);
  background: rgba(242, 193, 78, .08);
}

.page-privacy .pv-rail__foot {
  margin: 16px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--c-muted);
}

/* ---------- 正文 ---------- */
.page-privacy .pv-content {
  display: grid;
  gap: clamp(34px, 4.6vw, 68px);
  min-width: 0;
}

.page-privacy .pv-sec {
  scroll-margin-top: calc(var(--bar-h) + 26px);
  border-top: 1px solid var(--c-line);
  padding-top: clamp(20px, 2.8vw, 32px);
}

.page-privacy .pv-sec__head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 10px 14px;
  cursor: pointer;
  list-style: none;
}

.page-privacy .pv-sec__head::-webkit-details-marker {
  display: none;
}

.page-privacy .pv-sec__head::marker {
  content: "";
}

.page-privacy .pv-sec__head:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 6px;
}

.page-privacy .pv-sec__idx {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-gold);
}

.page-privacy .pv-sec__title {
  margin: 0;
  font-size: clamp(21px, 2.9vw, 30px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--c-white);
}

.page-privacy .pv-sec__toggle {
  position: relative;
  align-self: center;
  width: 22px;
  height: 22px;
  border: 1px solid var(--c-line);
}

.page-privacy .pv-sec__toggle::before,
.page-privacy .pv-sec__toggle::after {
  content: "";
  position: absolute;
  left: 5px;
  right: 5px;
  top: 50%;
  height: 1px;
  margin-top: -.5px;
  background: var(--c-cyan);
}

.page-privacy .pv-sec__toggle::after {
  transform: rotate(90deg);
  transition: transform .28s var(--ease);
}

.page-privacy .pv-sec[open] .pv-sec__toggle::after {
  transform: rotate(0deg);
}

.page-privacy .pv-sec__body {
  padding-top: clamp(16px, 2vw, 24px);
}

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

.page-privacy .pv-p {
  margin: 0;
  max-width: 40em;
  color: var(--c-muted);
  font-size: 16px;
  line-height: 1.85;
}

.page-privacy .pv-p a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 195, 217, .45);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-privacy .pv-p a:hover,
.page-privacy .pv-p a:focus-visible {
  color: var(--c-gold);
  border-color: var(--c-gold);
}

.page-privacy .pv-sub {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .01em;
  color: var(--c-white);
}

.page-privacy .pv-sub::before {
  content: "";
  display: inline-block;
  width: 16px;
  height: 1px;
  margin-right: 10px;
  vertical-align: middle;
  background: var(--c-gold);
}

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

.page-privacy .pv-list li {
  position: relative;
  padding-left: 20px;
  color: var(--c-muted);
  font-size: 15.5px;
  line-height: 1.8;
  max-width: 42em;
}

.page-privacy .pv-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .82em;
  width: 10px;
  height: 1px;
  background: var(--c-cyan);
}

.page-privacy .pv-list strong {
  color: var(--c-white);
  font-weight: 600;
}

.page-privacy .pv-mail {
  color: var(--c-gold);
  font-size: 15px;
  word-break: break-all;
}

/* ---------- 提示块 ---------- */
.page-privacy .pv-note {
  margin: 0;
  padding: 16px 20px;
  background: rgba(79, 195, 217, .07);
  border-left: 2px solid var(--c-cyan);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 0 100%);
  color: var(--c-white);
  font-size: 15px;
  line-height: 1.75;
  max-width: 44em;
}

.page-privacy .pv-note--gold {
  background: rgba(242, 193, 78, .08);
  border-left-color: var(--c-gold);
}

/* ---------- 双栏卡片 ---------- */
.page-privacy .pv-split {
  display: grid;
  gap: 16px;
}

.page-privacy .pv-card {
  padding: 20px;
  border: 1px solid var(--c-line);
  background: rgba(22, 32, 74, .55);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%);
}

.page-privacy .pv-card__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-privacy .pv-card__title {
  margin: 10px 0 10px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--c-white);
}

.page-privacy .pv-card p {
  margin: 0;
  color: var(--c-muted);
  font-size: 15px;
  line-height: 1.8;
}

.page-privacy .pv-card p a {
  color: var(--c-gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 193, 78, .45);
}

.page-privacy .pv-card p a:hover,
.page-privacy .pv-card p a:focus-visible {
  color: var(--c-cyan);
  border-color: var(--c-cyan);
}

/* ---------- 操作与收尾 ---------- */
.page-privacy .pv-action {
  margin-top: 4px;
}

.page-privacy .pv-tail {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 22px;
  padding: 20px;
  border: 1px dashed var(--c-line);
  background: rgba(6, 10, 30, .5);
}

.page-privacy .pv-tail__text {
  margin: 0;
  flex: 1 1 240px;
  color: var(--c-muted);
  font-size: 15px;
  line-height: 1.75;
}

.page-privacy .pv-tail__btn {
  flex: 0 0 auto;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 760px) {
  .page-privacy .pv-split {
    grid-template-columns: 1fr 1fr;
    gap: 18px;
  }
}

@media (min-width: 1024px) {
  .page-privacy .pv-body {
    grid-template-columns: var(--pv-rail-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-privacy .pv-rail {
    position: sticky;
    top: calc(var(--bar-h) + 28px);
    padding: 24px 22px 22px;
  }

  .page-privacy .pv-rail__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    position: relative;
    padding-bottom: 0;
  }

  .page-privacy .pv-rail__list::before {
    content: "";
    position: absolute;
    left: 7px;
    top: 14px;
    bottom: 14px;
    width: 1px;
    background: linear-gradient(180deg, var(--c-line) 0%, var(--c-cyan) 48%, var(--c-line) 100%);
    opacity: .75;
  }

  .page-privacy .pv-rail__item {
    flex: 0 0 auto;
    position: relative;
  }

  .page-privacy .pv-rail__item a {
    border: 0;
    background: none;
    padding: 9px 8px 9px 26px;
    white-space: normal;
    line-height: 1.5;
  }

  .page-privacy .pv-rail__item a::before {
    content: "";
    position: absolute;
    left: 2px;
    top: 50%;
    width: 11px;
    height: 11px;
    margin-top: -5.5px;
    border-radius: 50%;
    border: 1px solid var(--c-line);
    background: var(--c-panel);
    transition: background-color .25s var(--ease), border-color .25s var(--ease);
  }

  .page-privacy .pv-rail__item a:hover,
  .page-privacy .pv-rail__item a:focus-visible {
    background: rgba(242, 193, 78, .07);
    border-color: transparent;
  }

  .page-privacy .pv-rail__item a:hover::before,
  .page-privacy .pv-rail__item a:focus-visible::before {
    background: var(--c-gold);
    border-color: var(--c-gold);
  }

  .page-privacy .pv-hero h1 {
    max-width: 14em;
  }
}

@media (min-width: 1280px) {
  .page-privacy {
    --pv-rail-w: 276px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .pv-hero__scan {
    animation: none;
    opacity: .5;
  }

  .page-privacy .pv-sec__toggle::after {
    transition: none;
  }
}