.page-privacy {
  --pv-idx-w: 180px;
  --pv-head-w: 200px;
  --pv-gap-y: clamp(48px, 7vw, 92px);
  background: var(--ink-900);
  color: var(--star);
}

.page-privacy img {
  max-width: 100%;
}

/* ---------- 首屏 ---------- */
.page-privacy .pv-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 84% 6%, rgba(232, 163, 61, .16) 0%, transparent 58%),
    radial-gradient(90% 70% at 6% 92%, rgba(11, 79, 112, .55) 0%, transparent 62%),
    var(--ink-900);
}

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

.page-privacy .pv-hero__bg img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: none;
  object-fit: cover;
  opacity: .34;
}

.page-privacy .pv-hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(14, 21, 34, .60) 0%, rgba(14, 21, 34, .88) 62%, var(--ink-900) 100%);
}

.page-privacy .pv-hero__inner {
  position: relative;
  z-index: 1;
  padding-top: clamp(46px, 8vw, 92px);
  padding-bottom: clamp(42px, 6vw, 76px);
}

.page-privacy .pv-hero__title {
  margin: 16px 0 0;
  max-width: 15em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.4vw, 60px);
  line-height: 1.13;
  letter-spacing: -.02em;
}

.page-privacy .pv-hero__title::after {
  content: "";
  display: block;
  width: clamp(72px, 12vw, 132px);
  height: 4px;
  margin-top: 24px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--gold), rgba(232, 163, 61, 0));
}

.page-privacy .pv-hero__lede {
  margin: 22px 0 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.9;
  color: rgba(238, 244, 250, .8);
}

.page-privacy .pv-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 主体栅格 ---------- */
.page-privacy .pv-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 46px);
  padding-top: clamp(34px, 5vw, 68px);
  padding-bottom: clamp(56px, 9vw, 120px);
}

@media (min-width: 1000px) {
  .page-privacy .pv-body {
    grid-template-columns: var(--pv-idx-w) minmax(0, 1fr);
    column-gap: clamp(34px, 4vw, 62px);
  }
}

@media (min-width: 1200px) {
  .page-privacy {
    --pv-head-w: 224px;
  }
}

/* ---------- 章节索引 ---------- */
.page-privacy .pv-index__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: rgba(238, 244, 250, .45);
}

.page-privacy .pv-index .chapter-index {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 10px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-privacy .chapter-index__link {
  flex: 0 0 auto;
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  text-decoration: none;
  color: rgba(238, 244, 250, .7);
  font-size: 13px;
  line-height: 1.35;
  white-space: nowrap;
  transition: color .18s ease, background-color .18s ease, border-color .18s ease;
}

.page-privacy .chapter-index__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--gold);
}

.page-privacy .chapter-index__title {
  font-size: 13px;
}

.page-privacy .chapter-index__link[aria-current] {
  color: var(--star);
  background: rgba(232, 163, 61, .14);
  border-color: var(--line-gold);
}

@media (min-width: 1000px) {
  .page-privacy .pv-index {
    position: sticky;
    top: 26px;
    align-self: start;
  }

  .page-privacy .pv-index .chapter-index {
    display: block;
    overflow: visible;
    padding: 0 0 0 2px;
    border-left: 1px solid var(--line);
  }

  .page-privacy .chapter-index__link {
    align-items: flex-start;
    gap: 10px;
    margin-left: -3px;
    padding: 9px 12px 9px 14px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0 10px 10px 0;
    white-space: normal;
    font-size: 13.5px;
  }

  .page-privacy .chapter-index__link[aria-current] {
    border-left-color: var(--gold);
    background: linear-gradient(90deg, rgba(232, 163, 61, .18), rgba(232, 163, 61, 0));
  }

  .page-privacy .chapter-index__title {
    font-size: 13.5px;
    line-height: 1.45;
  }
}

/* ---------- 章节 ---------- */
.page-privacy .pv-sections {
  display: grid;
  gap: var(--pv-gap-y);
  min-width: 0;
}

.page-privacy .pv-sec {
  min-width: 0;
  scroll-margin-top: 96px;
  border-top: 1px solid var(--line-soft);
  padding-top: clamp(22px, 3vw, 32px);
}

.page-privacy .pv-sec__head {
  margin-bottom: 20px;
}

.page-privacy .pv-sec__num {
  display: inline-block;
  writing-mode: vertical-rl;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--gold);
}

.page-privacy .pv-sec__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 2.6vw, 27px);
  line-height: 1.32;
  letter-spacing: -.01em;
  color: var(--star);
}

.page-privacy .pv-sec__body {
  min-width: 0;
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(238, 244, 250, .78);
}

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

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

.page-privacy .pv-sec__body a {
  color: var(--lake);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

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

@media (min-width: 760px) {
  .page-privacy .pv-sec {
    display: grid;
    grid-template-columns: var(--pv-head-w) minmax(0, 1fr);
    column-gap: clamp(22px, 3vw, 34px);
  }

  .page-privacy .pv-sec__head {
    margin-bottom: 0;
  }

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

/* ---------- 列表 ---------- */
.page-privacy .pv-list {
  display: grid;
  gap: 12px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.page-privacy .pv-list li {
  position: relative;
  padding-left: 22px;
}

.page-privacy .pv-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .7em;
  width: 7px;
  height: 7px;
  border-radius: 1px;
  background: var(--gold);
  transform: rotate(45deg);
}

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

.page-privacy .pv-list--lake li::before {
  background: var(--lake);
}

.page-privacy .pv-list--poplar li::before {
  background: var(--poplar);
}

/* ---------- 必要 / 可选对照 ---------- */
.page-privacy .pv-split {
  display: grid;
  gap: 14px;
  margin: 0 0 22px;
}

@media (min-width: 640px) {
  .page-privacy .pv-split {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-privacy .pv-split__item {
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 20px 20px;
}

.page-privacy .pv-split__item--need {
  border-top: 3px solid var(--lake);
}

.page-privacy .pv-split__item--opt {
  border-top: 3px solid var(--gold);
}

.page-privacy .pv-split__k {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
}

.page-privacy .pv-split__item--need .pv-split__k {
  color: var(--lake);
}

.page-privacy .pv-split__item--opt .pv-split__k {
  color: var(--gold);
}

.page-privacy .pv-split__item ul {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 15px;
  line-height: 1.75;
}

.page-privacy .pv-split__item li {
  position: relative;
  padding-left: 16px;
  color: rgba(238, 244, 250, .76);
}

.page-privacy .pv-split__item li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 6px;
  height: 2px;
  background: rgba(238, 244, 250, .4);
}

/* ---------- 纸张卡片 ---------- */
.page-privacy .pv-note {
  margin: 0 0 22px;
  padding: clamp(18px, 2.6vw, 26px);
  background: var(--paper);
  color: var(--graphite);
  border: 1px solid var(--paper-deep);
  border-left: 5px solid var(--gold);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
}

.page-privacy .pv-note__k {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: #8C6A22;
}

.page-privacy .pv-note ul {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-privacy .pv-note li {
  position: relative;
  padding-left: 24px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--graphite);
}

.page-privacy .pv-note li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--lake);
}

.page-privacy .pv-note li:nth-child(2)::before {
  background: var(--gold);
}

.page-privacy .pv-note li:nth-child(3)::before {
  background: var(--poplar);
}

.page-privacy .pv-note strong {
  font-weight: 800;
}

.page-privacy .pv-note p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--graphite);
}

/* ---------- 流向图 ---------- */
.page-privacy .pv-flow {
  margin: 26px 0 22px;
  padding: 18px 18px 6px;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  background: rgba(24, 34, 52, .5);
}

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

.page-privacy .pv-flow__svg {
  display: block;
  width: 100%;
  min-width: 500px;
  height: auto;
}

.page-privacy .pv-flow figcaption {
  margin: 10px 0 12px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(238, 244, 250, .55);
}

/* ---------- 数据条 ---------- */
.page-privacy .pv-figures {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin: 0 0 22px;
}

@media (min-width: 520px) {
  .page-privacy .pv-figures {
    gap: 16px;
  }
}

.page-privacy .pv-figure {
  padding: 16px 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(160deg, rgba(28, 143, 196, .16), rgba(14, 21, 34, .25));
}

.page-privacy .pv-figure__n {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--gold);
}

.page-privacy .pv-figure__l {
  display: block;
  margin-top: 6px;
  font-size: 12.5px;
  line-height: 1.5;
  color: rgba(238, 244, 250, .62);
}

/* ---------- 可展开细节 ---------- */
.page-privacy .pv-fold {
  margin: 0 0 18px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(24, 34, 52, .42);
}

.page-privacy .pv-fold summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--star);
}

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

.page-privacy .pv-fold summary::after {
  content: "＋";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--gold);
}

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

.page-privacy .pv-fold p {
  margin: 0 0 16px;
  padding: 14px 0 0;
  border-top: 1px solid var(--line-soft);
  font-size: 15px;
  line-height: 1.85;
  color: rgba(238, 244, 250, .72);
}

/* ---------- 版本标识 ---------- */
.page-privacy .pv-version {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0 0 20px;
}

/* ---------- 尾部延伸 ---------- */
.page-privacy .pv-next {
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--line);
  background:
    radial-gradient(90% 120% at 12% 0%, rgba(11, 79, 112, .6) 0%, transparent 62%),
    linear-gradient(180deg, var(--ink-800), var(--ink-900));
}

.page-privacy .pv-next__inner {
  padding-top: clamp(40px, 6vw, 72px);
  padding-bottom: clamp(44px, 6vw, 80px);
}

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

.page-privacy .pv-next__grid {
  display: grid;
  gap: 14px;
}

@media (min-width: 620px) {
  .page-privacy .pv-next__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-privacy .pv-next__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-privacy .pv-next__card {
  display: block;
  padding: 20px 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(14, 21, 34, .62);
  color: inherit;
  text-decoration: none;
  transition: border-color .2s ease, background-color .2s ease, transform .2s ease;
}

.page-privacy .pv-next__card:hover,
.page-privacy .pv-next__card:focus-visible {
  border-color: var(--line-gold);
  background: rgba(24, 34, 52, .92);
  transform: translateY(-3px);
}

.page-privacy .pv-next__card h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--star);
}

.page-privacy .pv-next__card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(238, 244, 250, .62);
}

.page-privacy .pv-next__card::after {
  content: "→";
  display: block;
  margin-top: 14px;
  font-family: var(--font-mono);
  color: var(--gold);
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .chapter-index__link,
  .page-privacy .pv-next__card {
    transition: none;
  }

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