.page-privacy {
  --pv-measure: 34em;
  --pv-sticky: calc(var(--coord-h) + 68px);
  position: relative;
  display: block;
  background: var(--ink-900);
}

/* 顶部标题区 */
.page-privacy .privacy-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(1.5rem, 5vw, 3rem) 0 clamp(2rem, 6vw, 4rem);
}

.page-privacy .privacy-veil {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.045;
  pointer-events: none;
}

.page-privacy .privacy-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.75rem, 5vw, 3.25rem);
  align-items: end;
}

.page-privacy .privacy-hero__text {
  max-width: 40em;
}

.page-privacy .breadcrumb {
  margin-bottom: clamp(1rem, 3vw, 1.75rem);
}

.page-privacy .privacy-hero h1 {
  margin: 0.5rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--mist-100);
}

.page-privacy .privacy-hero__lede {
  margin: 1.25rem 0 0;
  max-width: 36em;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--slate-400);
}

.page-privacy .privacy-hero__stamp {
  margin: 1.5rem 0 0;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--cyan-700);
}

.page-privacy .privacy-hero__media {
  margin: 0;
  border-color: var(--line-600);
  box-shadow: 0 24px 60px -40px rgba(53, 240, 208, 0.35);
}

/* 章节索引 */
.page-privacy .privacy-toc {
  position: sticky;
  top: var(--coord-h);
  z-index: 6;
  background: rgba(6, 28, 26, 0.94);
  border-top: 1px solid var(--line-600);
  border-bottom: 1px solid var(--line-600);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
}

.page-privacy .privacy-toc__inner {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.page-privacy .privacy-toc__label {
  flex: none;
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--cyan-700);
  padding: 0.85rem 0;
  border-right: 1px solid var(--line-600);
  padding-right: 0.9rem;
}

.page-privacy .privacy-toc__list {
  display: flex;
  align-items: center;
  gap: clamp(0.9rem, 3vw, 2rem);
  flex: 1 1 auto;
  list-style: none;
  margin: 0;
  padding: 0.85rem 0;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.page-privacy .privacy-toc__list::-webkit-scrollbar {
  display: none;
}

.page-privacy .privacy-toc__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  white-space: nowrap;
  font-size: 0.8125rem;
  color: var(--slate-400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-privacy .privacy-toc__list a .mono {
  color: var(--cyan-700);
  font-size: 0.6875rem;
}

.page-privacy .privacy-toc__list a:hover,
.page-privacy .privacy-toc__list a:focus-visible {
  color: var(--cyan-400);
  border-bottom-color: var(--cyan-400);
}

.page-privacy .privacy-toc__list a:hover .mono,
.page-privacy .privacy-toc__list a:focus-visible .mono {
  color: var(--cyan-400);
}

/* 正文窄栏 */
.page-privacy .privacy-body {
  padding: clamp(2.5rem, 7vw, 5rem) 0 clamp(3rem, 8vw, 6rem);
}

.page-privacy .pv-section {
  max-width: var(--pv-measure);
  margin-inline: auto;
  padding-bottom: clamp(2.25rem, 6vw, 3.75rem);
  border-bottom: 1px solid var(--line-600);
  scroll-margin-top: var(--pv-sticky);
}

.page-privacy .pv-section + .pv-section {
  padding-top: clamp(2.25rem, 6vw, 3.75rem);
}

.page-privacy .pv-section:last-of-type {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-privacy .pv-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.page-privacy .pv-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 3.4vw, 1.75rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--mist-100);
}

.page-privacy .pv-num {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--cyan-400);
}

.page-privacy .pv-top {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  margin-top: 0.25rem;
  border: 1px solid var(--line-600);
  border-radius: 999px;
  color: var(--slate-400);
  font-size: 0.875rem;
  text-decoration: none;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-privacy .pv-top:hover,
.page-privacy .pv-top:focus-visible {
  color: var(--cyan-400);
  border-color: var(--cyan-400);
}

.page-privacy .pv-section p {
  margin: 0 0 1rem;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--mist-100);
}

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

.page-privacy .pv-note {
  color: var(--slate-400) !important;
  border-left: 2px solid var(--line-600);
  padding-left: 1rem;
  margin-top: 1.35rem !important;
}

.page-privacy .pv-list {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.05rem;
}

.page-privacy .pv-list > li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--mist-100);
}

.page-privacy .pv-list > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 12px;
  height: 1px;
  background: var(--cyan-700);
}

.page-privacy .pv-list strong {
  color: var(--cyan-400);
  font-weight: 600;
}

/* 用途四块：错位卡片 */
.page-privacy .pv-uses {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

.page-privacy .pv-use {
  background: var(--ink-700);
  border: 1px solid var(--line-600);
  border-radius: 14px;
  padding: 1.25rem 1.35rem;
}

.page-privacy .pv-use h3 {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  letter-spacing: 0.01em;
  color: var(--mist-100);
}

.page-privacy .pv-use p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--slate-400);
}

/* 保存期限 */
.page-privacy .pv-terms {
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.1rem;
}

.page-privacy .pv-terms dt {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--cyan-400);
  margin-bottom: 0.35rem;
}

.page-privacy .pv-terms dd {
  margin: 0;
  padding-left: 1rem;
  border-left: 1px solid var(--line-600);
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--mist-100);
}

/* 权利条目 */
.page-privacy .pv-rights {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 1.35rem;
}

.page-privacy .pv-rights > li {
  border-left: 3px solid var(--cyan-400);
  padding: 0.15rem 0 0.15rem 1.1rem;
}

.page-privacy .pv-rights h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.01em;
  color: var(--mist-100);
}

.page-privacy .pv-rights p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--slate-400);
}

/* 折叠说明 */
.page-privacy .disclosure {
  margin-top: 1.75rem;
  border-top: 1px solid var(--line-600);
  border-bottom: 1px solid var(--line-600);
  background: transparent;
}

.page-privacy .disclosure summary {
  cursor: pointer;
  list-style: none;
  padding: 0.95rem 1.75rem 0.95rem 0;
  position: relative;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--cyan-400);
}

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

.page-privacy .disclosure summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1rem;
  color: var(--slate-400);
  transition: transform 220ms var(--ease), color 220ms var(--ease);
}

.page-privacy .disclosure[open] summary::after {
  content: "−";
  color: var(--cyan-400);
}

.page-privacy .disclosure__body {
  padding-bottom: 1.4rem;
}

.page-privacy .disclosure__body .pv-list {
  margin-top: 0;
}

/* 联系区块 */
.page-privacy .pv-contact {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-privacy .pv-contact li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px dashed var(--line-600);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--mist-100);
}

.page-privacy .pv-contact .mono {
  flex: none;
  min-width: 5em;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--cyan-700);
}

.page-privacy .pv-contact a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 240, 208, 0.35);
}

.page-privacy .pv-contact a:hover,
.page-privacy .pv-contact a:focus-visible {
  border-bottom-color: var(--cyan-400);
}

.page-privacy .pv-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

/* 平板与桌面 */
@media (min-width: 640px) {
  .page-privacy .pv-uses {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem;
  }

  .page-privacy .pv-use:nth-child(2) {
    margin-top: 28px;
  }

  .page-privacy .pv-use:nth-child(4) {
    margin-top: 20px;
  }
}

@media (min-width: 900px) {
  .page-privacy .privacy-hero__inner {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.82fr);
    gap: clamp(2rem, 5vw, 4rem);
  }

  .page-privacy .privacy-hero__media {
    margin-bottom: -1.75rem;
  }

  .page-privacy .privacy-toc__list {
    overflow: visible;
    flex-wrap: wrap;
  }

  .page-privacy .pv-section {
    max-width: var(--pv-measure);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .privacy-toc__list a,
  .page-privacy .pv-top,
  .page-privacy .disclosure summary::after {
    transition: none;
  }
}