.page-privacy {
  --pv-measure: 640px;
  --pv-gap: 20px;
  background: var(--bg);
  color: var(--ink);
  padding-bottom: 64px;
  overflow-x: hidden;
}

/* ---------- 首屏：抽象数据纹理 + 声明 ---------- */
.page-privacy .pv-hero {
  position: relative;
  isolation: isolate;
  border-bottom: 1px solid var(--line-soft);
}
.page-privacy .pv-hero__media {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.page-privacy .pv-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.4;
  filter: saturate(0.75) contrast(1.1);
}
.page-privacy .pv-hero__veil {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(5, 7, 15, 0.6) 0%, rgba(5, 7, 15, 0.88) 58%, var(--bg) 100%),
    linear-gradient(104deg, rgba(0, 229, 255, 0.14) 0%, rgba(0, 229, 255, 0) 52%),
    linear-gradient(276deg, rgba(255, 46, 126, 0.12) 0%, rgba(255, 46, 126, 0) 46%);
}
.page-privacy .pv-hero__inner {
  padding-top: 28px;
  padding-bottom: 40px;
}
.page-privacy .pv-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
  margin-bottom: 24px;
}
.page-privacy .pv-crumbs a {
  color: var(--ink-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.24s var(--ease), border-color 0.24s var(--ease);
}
.page-privacy .pv-crumbs a:hover,
.page-privacy .pv-crumbs a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}
.page-privacy .pv-hero__eyebrow {
  color: var(--cyan);
  margin-bottom: 16px;
}
.page-privacy .pv-title {
  margin: 0;
  max-width: 20ch;
  font-weight: 300;
  font-size: clamp(30px, 7.6vw, 62px);
  line-height: 1.14;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.page-privacy .pv-lead {
  margin: 20px 0 0;
  max-width: var(--pv-measure);
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
}
.page-privacy .pv-stats {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 14px 32px;
}
.page-privacy .pv-stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 14px;
  border-left: 1px solid var(--line-strong);
}
.page-privacy .pv-stats b {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--orange);
}
.page-privacy .pv-stats span {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

/* ---------- 版面：左侧目录 + 右侧正文 ---------- */
.page-privacy .pv-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding-top: 32px;
  padding-bottom: 48px;
}
.page-privacy .pv-rail {
  padding: 14px 16px 16px;
  border-radius: var(--radius);
}
.page-privacy .pv-rail__title {
  color: var(--mist);
  margin: 0 0 10px;
}
.page-privacy .pv-rail__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}
.page-privacy .pv-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 8px 12px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  color: var(--ink-soft);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.24s var(--ease), border-color 0.24s var(--ease), background-color 0.24s var(--ease);
}
.page-privacy .pv-rail__link:hover,
.page-privacy .pv-rail__link:focus-visible {
  color: var(--ink);
  border-color: var(--line-strong);
}
.page-privacy .pv-rail__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--line-strong);
  flex: none;
  transition: background-color 0.24s var(--ease), box-shadow 0.24s var(--ease);
}
.page-privacy .pv-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mist);
}
.page-privacy .pv-rail__label {
  font-size: 13px;
}
.page-privacy .pv-rail__link.is-active {
  color: var(--ink);
  border-color: rgba(0, 229, 255, 0.5);
  background: var(--glass);
}
.page-privacy .pv-rail__link.is-active .pv-rail__dot {
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 122, 26, 0.18);
}
.page-privacy .pv-rail__link.is-active .pv-rail__num {
  color: var(--cyan);
}

/* ---------- 章节 ---------- */
.page-privacy .pv-body {
  min-width: 0;
  max-width: var(--pv-measure);
}
.page-privacy .pv-sec {
  padding: 26px 0 22px;
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: calc(var(--header-h) + 24px);
}
.page-privacy .pv-sec:first-child {
  border-top: 0;
  padding-top: 6px;
}
.page-privacy .pv-sec--dense {
  padding-top: 20px;
  padding-bottom: 18px;
}
.page-privacy .pv-sec__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
}
.page-privacy .pv-sec__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--cyan);
}
.page-privacy .pv-sec__h2 {
  margin: 0;
  font-size: clamp(21px, 4.4vw, 30px);
  font-weight: 500;
  letter-spacing: 0.02em;
  line-height: 1.3;
  color: var(--ink);
}
.page-privacy .pv-sec__summary {
  margin: 10px 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}
.page-privacy .pv-sec p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
}
.page-privacy .pv-sec p:last-child {
  margin-bottom: 0;
}
.page-privacy .pv-link {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan);
  padding-bottom: 1px;
  transition: color 0.24s var(--ease), background-color 0.24s var(--ease);
}
.page-privacy .pv-link:hover,
.page-privacy .pv-link:focus-visible {
  color: var(--cyan);
  background: rgba(0, 229, 255, 0.08);
}
.page-privacy .pv-tip {
  margin-top: 16px !important;
  padding-left: 14px;
  border-left: 2px solid var(--orange);
  font-size: 14px !important;
  color: var(--ink-dim) !important;
}

/* 三类信息卡 */
.page-privacy .pv-cat {
  display: grid;
  gap: 10px;
}
.page-privacy .pv-cat__item {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  border-radius: var(--radius);
  background: var(--glass);
}
.page-privacy .pv-cat__k {
  display: block;
  margin-bottom: 6px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.page-privacy .pv-cat__v {
  margin: 0 !important;
  font-size: 14px !important;
  line-height: 1.8 !important;
  color: var(--ink-dim) !important;
}

/* 用途对应表 */
.page-privacy .pv-pairs {
  display: grid;
  gap: 1px;
  margin-top: 20px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
}
.page-privacy .pv-pair {
  display: grid;
  gap: 6px;
  padding: 14px 16px;
  background: var(--bg-2);
}
.page-privacy .pv-pair__k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange);
}
.page-privacy .pv-pair__v {
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* 提示实色块 */
.page-privacy .pv-note {
  margin-top: 18px;
  padding: 16px 18px;
  border-radius: var(--radius);
  border-left: 2px solid var(--lemon);
}
.page-privacy .pv-note__k {
  display: block;
  margin-bottom: 10px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--lemon);
}
.page-privacy .pv-note__list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
}
.page-privacy .pv-note__list li {
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* 步骤 */
.page-privacy .pv-steps {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}
.page-privacy .pv-step {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 14px 16px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--glass);
}
.page-privacy .pv-step__num {
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--bg);
  background: var(--mint);
  border-radius: var(--radius);
}
.page-privacy .pv-step p {
  margin: 0 !important;
  font-size: 14px !important;
  line-height: 1.8 !important;
  color: var(--ink-soft) !important;
}

/* 底部链接 */
.page-privacy .pv-links {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-privacy .pv-links .btn {
  border-radius: var(--radius);
}

/* ---------- 动效 ---------- */
.page-privacy [data-reveal] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}
.page-privacy [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 窄屏收敛 ---------- */
@media (max-width: 480px) {
  .page-privacy .pv-hero__inner {
    padding-top: 20px;
    padding-bottom: 32px;
  }
  .page-privacy .pv-stats {
    gap: 12px 20px;
  }
  .page-privacy .pv-stats b {
    font-size: 19px;
  }
  .page-privacy .pv-pair,
  .page-privacy .pv-cat__item,
  .page-privacy .pv-note,
  .page-privacy .pv-step {
    padding: 12px 13px;
  }
}

/* ---------- 桌面：左栏目录固定 ---------- */
@media (min-width: 768px) {
  .page-privacy .pv-pairs {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .page-privacy {
    padding-bottom: 96px;
  }
  .page-privacy .pv-hero__inner {
    padding-top: 44px;
    padding-bottom: 64px;
  }
  .page-privacy .pv-title {
    max-width: 22ch;
  }
  .page-privacy .pv-lead {
    font-size: 17px;
  }
  .page-privacy .pv-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 56px;
    padding-top: 48px;
    padding-bottom: 80px;
  }
  .page-privacy .pv-rail {
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
    padding: 18px 16px 18px;
  }
  .page-privacy .pv-rail__list {
    flex-direction: column;
    overflow: visible;
    gap: 2px;
  }
  .page-privacy .pv-rail__link {
    width: 100%;
    min-height: 40px;
    padding: 6px 10px;
    border-color: transparent;
    background: transparent;
    white-space: normal;
  }
  .page-privacy .pv-rail__link:hover,
  .page-privacy .pv-rail__link:focus-visible {
    background: var(--glass);
  }
  .page-privacy .pv-sec {
    scroll-margin-top: calc(var(--header-h) + 40px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .page-privacy .pv-rail__link,
  .page-privacy .pv-rail__dot,
  .page-privacy .pv-link {
    transition: none;
  }
}