.page-privacy {
  --privacy-rail: 5.5rem;
  --privacy-measure: 36rem;
  background: var(--salt);
}

/* ---------- 页首 ---------- */
.page-privacy .privacy-hero {
  position: relative;
  border-bottom: 1px solid var(--mist);
  background:
    repeating-linear-gradient(128deg, rgba(30, 127, 168, .07) 0 1.5px, transparent 1.5px 26px),
    linear-gradient(180deg, rgba(156, 207, 227, .22) 0%, rgba(248, 250, 251, 0) 72%);
}

.page-privacy .privacy-hero .wrap {
  padding-block: clamp(1.35rem, 4vw, 2.25rem) clamp(1.5rem, 4vw, 2.4rem);
}

.page-privacy .privacy-h1 {
  margin: .55rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.1rem, 7vw, 3.4rem);
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--ink-900);
}

.page-privacy .privacy-lede {
  max-width: 34em;
  margin-top: 1rem;
  font-family: var(--font-body);
  font-size: clamp(1rem, 2.2vw, 1.125rem);
  line-height: 1.78;
  color: var(--text);
}

.page-privacy .privacy-stamp {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  margin-top: 1.3rem;
  padding: .35rem .85rem .35rem .7rem;
  border: 1px solid var(--lake-300);
  border-radius: var(--radius-pill);
  background: rgba(248, 250, 251, .8);
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .08em;
  color: var(--ink-700);
}

.page-privacy .privacy-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--flag);
  flex: none;
}

.page-privacy .privacy-hero-art {
  border-top: 1px solid var(--mist);
  background: var(--mist);
  overflow: hidden;
}

.page-privacy .privacy-hero-art img {
  display: block;
  width: 100%;
  height: clamp(118px, 20vw, 230px);
  object-fit: cover;
}

/* ---------- 章节索引 ---------- */
.page-privacy .chapter-index {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem .6rem;
  padding-block: clamp(1.1rem, 3vw, 1.75rem);
  border-bottom: 1px solid var(--mist);
}

.page-privacy .chapter-index a {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--ink-700);
}

.page-privacy .chapter-index a::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: .45rem;
  border-radius: 50%;
  background: var(--flag);
}

.page-privacy .chapter-index a:hover,
.page-privacy .chapter-index a:focus-visible {
  color: var(--lake-dark);
}

/* ---------- 章节骨架 ---------- */
.page-privacy .privacy-chapter {
  display: grid;
  grid-template-columns: 1fr;
  gap: .35rem;
  padding-block: clamp(1.9rem, 5vw, 3.4rem);
  border-bottom: 1px dashed var(--mist);
}

.page-privacy .chapter-rail {
  display: flex;
  align-items: center;
  gap: .7rem;
}

.page-privacy .chapter-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.9rem, 8vw, 3.4rem);
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--lake-300);
}

.page-privacy .chapter-rail::after {
  content: "";
  flex: 1 1 auto;
  height: 1px;
  background: linear-gradient(90deg, var(--lake-300), transparent);
}

.page-privacy .chapter-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 4.4vw, 1.8rem);
  line-height: 1.25;
  color: var(--ink-900);
}

.page-privacy .chapter-sum {
  margin-top: .8rem;
  padding: .8rem 1rem;
  border-left: 3px solid var(--lake);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
  background: rgba(156, 207, 227, .3);
  font-size: 1rem;
  line-height: 1.72;
  color: var(--ink-700);
}

.page-privacy .chapter-prose {
  margin-top: 1rem;
  max-width: 34em;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text);
}

.page-privacy .chapter-prose p + p {
  margin-top: .7rem;
}

.page-privacy .chapter-prose a {
  color: var(--lake-dark);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 折叠清单 ---------- */
.page-privacy .fold-list {
  position: relative;
  margin-top: 1.2rem;
  padding-left: 1.35rem;
}

.page-privacy .fold-list::before {
  content: "";
  position: absolute;
  left: .3rem;
  top: .7rem;
  bottom: .9rem;
  border-left: 1px dashed var(--lake-300);
  transition: border-color .3s var(--ease);
}

.page-privacy .fold-list:hover::before {
  border-left-color: var(--lake);
}

.page-privacy .fold-wrap {
  border-top: 1px solid var(--mist);
}

.page-privacy .fold-wrap:last-child {
  border-bottom: 1px solid var(--mist);
}

.page-privacy .fold-head {
  display: flex;
  align-items: baseline;
  gap: .7rem;
  width: 100%;
  padding: .85rem 0;
  border: 0;
  background: none;
  text-align: left;
  cursor: pointer;
  color: var(--ink-900);
}

.page-privacy .fold-head:focus-visible {
  outline: 2px solid var(--lake);
  outline-offset: 3px;
  border-radius: var(--radius-s);
}

.page-privacy .fold-index {
  flex: none;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .08em;
  color: var(--amber-ink);
}

.page-privacy .fold-title {
  flex: 1 1 auto;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.02rem;
  line-height: 1.45;
}

.page-privacy .fold-head:hover .fold-title {
  color: var(--lake-dark);
}

.page-privacy .fold-mark {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  align-self: center;
  transform: translateY(-1px);
}

.page-privacy .fold-mark::before,
.page-privacy .fold-mark::after {
  content: "";
  position: absolute;
  background: var(--lake);
  border-radius: 2px;
}

.page-privacy .fold-mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-privacy .fold-mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
  transition: transform .25s var(--ease), opacity .25s var(--ease);
}

.page-privacy [data-open] .fold-mark::after,
.page-privacy .fold-head[aria-expanded="true"] .fold-mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-privacy .fold-body {
  padding-bottom: .95rem;
}

.page-privacy .fold-body[hidden] {
  display: none;
}

.page-privacy .fold-inner {
  max-width: 32em;
  font-size: .98rem;
  line-height: 1.82;
  color: var(--text);
}

.page-privacy .fold-inner p + p {
  margin-top: .6rem;
}

.page-privacy .step-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: privacy-step;
}

.page-privacy .step-list li {
  position: relative;
  padding-left: 1.6rem;
  counter-increment: privacy-step;
}

.page-privacy .step-list li + li {
  margin-top: .5rem;
}

.page-privacy .step-list li::before {
  content: counter(privacy-step);
  position: absolute;
  left: 0;
  top: .18em;
  font-family: var(--font-mono);
  font-size: .78rem;
  color: var(--flag);
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 900px) {
  .page-privacy .privacy-chapter {
    grid-template-columns: var(--privacy-rail) minmax(0, var(--privacy-measure)) 1fr;
    column-gap: clamp(1.25rem, 3vw, 2.5rem);
    gap: 0;
    align-items: start;
  }

  .page-privacy .chapter-rail {
    display: block;
    padding-top: .25rem;
  }

  .page-privacy .chapter-rail::after {
    display: block;
    width: 2.6rem;
    margin-top: .8rem;
  }

  .page-privacy .chapter-body {
    grid-column: 2;
  }

  .page-privacy .privacy-lede {
    max-width: 44em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .fold-mark::after,
  .page-privacy .fold-list::before {
    transition: none;
  }
}
</final>