.page-privacy {
  --privacy-measure: 40rem;
  --privacy-index-w: 15.5rem;
  --privacy-rule: 1px solid rgba(227, 178, 75, 0.6);
  --privacy-rule-soft: 1px solid rgba(199, 183, 156, 0.8);
  padding-bottom: 5rem;
}

.page-privacy a:focus-visible,
.page-privacy summary:focus-visible {
  outline: 2px solid var(--c-purple);
  outline-offset: 3px;
}

/* 首屏 */
.page-privacy .privacy-hero {
  max-width: 46rem;
  padding: 1.5rem 0 2rem;
}

.page-privacy .privacy-hero__eyebrow {
  letter-spacing: 0.22em;
  color: var(--c-gold-deep);
}

.page-privacy .privacy-hero__title {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: var(--fs-h1);
  line-height: 1.2;
  color: var(--c-ink);
  margin: 0.7rem 0 1.1rem;
  text-wrap: balance;
}

.page-privacy .privacy-hero__lede {
  font-size: 1.0625rem;
  line-height: 1.85;
  color: rgba(23, 17, 15, 0.86);
  border-left: 3px solid var(--c-gold);
  padding-left: 1rem;
}

.page-privacy .privacy-banner {
  margin: 0 0 3rem;
}

.page-privacy .privacy-banner img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--c-line);
}

/* 窄幅册子布局 */
.page-privacy .privacy-layout {
  display: grid;
  gap: 2.25rem;
}

.page-privacy .privacy-index {
  min-width: 0;
}

.page-privacy .privacy-index__title {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  color: var(--c-gold-deep);
  margin: 0 0 0.75rem;
  text-transform: uppercase;
}

.page-privacy .privacy-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-privacy .privacy-index__item {
  flex: 0 0 auto;
}

.page-privacy .privacy-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.45rem 0.7rem;
  font-size: 0.8125rem;
  line-height: 1.4;
  color: var(--c-ink);
  text-decoration: none;
  background: var(--c-paper);
  border: 1px solid var(--c-line);
  white-space: nowrap;
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-privacy .privacy-index__link:hover {
  color: var(--c-red);
  background: rgba(227, 178, 75, 0.18);
}

.page-privacy .privacy-index__num {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--c-gold-deep);
}

/* 正文册页 */
.page-privacy .privacy-doc {
  min-width: 0;
}

.page-privacy .privacy-section {
  padding-top: 2.25rem;
  margin-top: 2.25rem;
  border-top: var(--privacy-rule);
  scroll-margin-top: 7rem;
}

.page-privacy .privacy-section:first-child {
  padding-top: 0;
  margin-top: 0;
  border-top: 0;
}

.page-privacy .privacy-section__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.7rem, 6vw, 2.4rem);
  line-height: 1;
  color: var(--c-red);
  margin-bottom: 0.6rem;
}

.page-privacy .privacy-section__title {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: var(--fs-h2);
  line-height: 1.32;
  color: var(--c-ink);
  margin: 0 0 1rem;
  max-width: var(--privacy-measure);
}

.page-privacy .privacy-section p {
  max-width: var(--privacy-measure);
  font-size: 1rem;
  line-height: 1.88;
  color: rgba(23, 17, 15, 0.88);
  margin: 0 0 1.1rem;
}

.page-privacy .privacy-section a {
  color: var(--c-red);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-privacy .privacy-section a:hover {
  color: var(--c-red-deep);
}

/* 分条 */
.page-privacy .privacy-clause {
  padding: 1rem 0 1.2rem;
  border-bottom: var(--privacy-rule-soft);
  max-width: var(--privacy-measure);
}

.page-privacy .privacy-clause:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-privacy .privacy-clause__title {
  position: relative;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 1.0625rem;
  color: var(--c-red-deep);
  margin: 0 0 0.4rem;
  padding-left: 1rem;
}

.page-privacy .privacy-clause__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 0.5rem;
  height: 0.5rem;
  background: var(--c-gold);
}

.page-privacy .privacy-clause p {
  margin: 0;
  padding-left: 1rem;
}

/* 用途清单 */
.page-privacy .privacy-uses {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
  max-width: var(--privacy-measure);
}

.page-privacy .privacy-uses__item {
  padding: 0.1rem 0 0.1rem 1rem;
  border-left: 3px solid var(--c-gold);
  font-size: 0.9875rem;
  line-height: 1.85;
  color: rgba(23, 17, 15, 0.88);
}

.page-privacy .privacy-uses__item strong {
  color: var(--c-ink);
  font-weight: 600;
}

/* 步骤 */
.page-privacy .privacy-steps {
  list-style: none;
  counter-reset: privacy-step;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  gap: 1.1rem;
  max-width: var(--privacy-measure);
}

.page-privacy .privacy-steps__item {
  counter-increment: privacy-step;
  position: relative;
  padding-left: 3.1rem;
  font-size: 0.9875rem;
  line-height: 1.85;
  color: rgba(23, 17, 15, 0.88);
}

.page-privacy .privacy-steps__item::before {
  content: counter(privacy-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.05rem;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--c-red);
}

/* 折叠补充 */
.page-privacy .privacy-fold {
  margin: 1.25rem 0 0;
  max-width: var(--privacy-measure);
  background: var(--c-paper);
  border: 1px solid var(--c-line);
}

.page-privacy .privacy-fold__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 1rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--c-ink);
}

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

.page-privacy .privacy-fold__summary::after {
  content: "＋";
  font-family: var(--font-mono);
  color: var(--c-red);
  flex: 0 0 auto;
}

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

.page-privacy .privacy-fold__body {
  padding: 0 1rem 1rem;
  border-top: var(--privacy-rule-soft);
}

.page-privacy .privacy-fold__body p {
  margin: 0.8rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.85;
}

/* 按钮行 */
.page-privacy .privacy-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.5rem;
  max-width: var(--privacy-measure);
}

/* 固定返回目录 */
.page-privacy .privacy-backtop {
  position: fixed;
  right: 0.85rem;
  bottom: 0.85rem;
  z-index: 30;
  display: inline-block;
  padding: 0.55rem 0.9rem;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  text-decoration: none;
  color: var(--c-gold);
  background: var(--c-ink);
  border: 1px solid var(--c-gold-deep);
  box-shadow: 0 6px 18px rgba(23, 17, 15, 0.28);
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-privacy .privacy-backtop:hover {
  background: var(--c-red);
  color: var(--c-ivory);
  border-color: var(--c-red);
}

/* 桌面：签筒式固定索引 */
@media (min-width: 62rem) {
  .page-privacy .privacy-layout {
    grid-template-columns: minmax(0, 1fr) var(--privacy-index-w);
    gap: 4rem;
    align-items: start;
  }

  .page-privacy .privacy-index {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: 6.5rem;
  }

  .page-privacy .privacy-doc {
    grid-column: 1;
    grid-row: 1;
  }

  .page-privacy .privacy-index__list {
    display: block;
    overflow: visible;
    padding-left: 0;
    border-left: 1px solid rgba(227, 178, 75, 0.7);
  }

  .page-privacy .privacy-index__item {
    margin-bottom: 0.1rem;
  }

  .page-privacy .privacy-index__link {
    display: flex;
    align-items: baseline;
    padding: 0.5rem 0 0.5rem 1rem;
    margin-left: -1px;
    border: 0;
    border-left: 2px solid transparent;
    background: transparent;
    white-space: normal;
    line-height: 1.5;
  }

  .page-privacy .privacy-index__link:hover {
    border-left-color: var(--c-red);
    background: rgba(227, 178, 75, 0.12);
  }

  .page-privacy .privacy-backtop {
    right: 1.75rem;
    bottom: 1.75rem;
  }
}

@media (min-width: 78rem) {
  .page-privacy .privacy-layout {
    gap: 5.5rem;
  }

  .page-privacy .privacy-hero {
    padding-top: 2.25rem;
  }
}

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