.page-privacy {
  --privacy-rail: 220px;
  --privacy-gap: clamp(2rem, 5vw, 4.5rem);
  --privacy-col: 66ch;
  --privacy-sticky-top: calc(var(--announce-h) + 4.25rem);
  background: var(--cream);
  color: var(--ink);
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

/* ---------- 面包屑间距 ---------- */
.page-privacy .breadcrumb {
  padding-top: clamp(1rem, 2.5vw, 1.75rem);
}

/* ---------- 首屏 ---------- */
.page-privacy .privacy-hero {
  padding-top: clamp(1.25rem, 3vw, 2.25rem);
  padding-bottom: clamp(2rem, 5vw, 3.5rem);
  border-bottom: 1px solid var(--line-soft);
}

.page-privacy .privacy-hero__inner {
  display: grid;
  gap: clamp(1rem, 2.5vw, 1.6rem);
}

.page-privacy .coordbar {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--grey);
}

.page-privacy .coordbar__key {
  color: var(--brand);
  font-weight: 700;
}

.page-privacy .coordbar__sep {
  color: var(--line-strong);
}

.page-privacy .privacy-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.02em;
  font-size: clamp(2.2rem, 5.6vw, 4.4rem);
  line-height: 1.02;
  color: var(--ink);
  max-width: 22ch;
}

.page-privacy .privacy-hero__lede {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(1rem, 1.6vw, 1.1875rem);
  line-height: 1.8;
  color: var(--ink);
}

.page-privacy .privacy-keys {
  list-style: none;
  margin: 0.25rem 0 0;
  padding: clamp(1rem, 2vw, 1.25rem) 0 0;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem 2.5rem;
}

.page-privacy .privacy-keys__item {
  display: inline-flex;
  align-items: baseline;
  gap: 0.6rem;
  font-size: 0.9375rem;
  color: var(--ink);
}

.page-privacy .privacy-keys__num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 2.4vw, 1.875rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--cyan-ink);
  letter-spacing: 0.01em;
}

/* ---------- 主结构 ---------- */
.page-privacy .privacy-shell {
  padding-top: clamp(2rem, 5vw, 3.5rem);
}

.page-privacy .privacy-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 4vw, 3rem);
  align-items: start;
}

@media (min-width: 900px) {
  .page-privacy .privacy-grid {
    grid-template-columns: var(--privacy-rail) minmax(0, 1fr);
    gap: var(--privacy-gap);
  }
}

/* ---------- 侧栏目录 ---------- */
.page-privacy .privacy-rail {
  border-top: 1px solid var(--line);
  padding-top: 1rem;
}

@media (min-width: 900px) {
  .page-privacy .privacy-rail {
    position: sticky;
    top: var(--privacy-sticky-top);
    border-top: none;
    border-left: 2px solid var(--line-soft);
    padding: 0 0 0 1.25rem;
  }
}

.page-privacy .privacy-rail__title {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--grey);
}

.page-privacy .privacy-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.1rem;
}

.page-privacy .privacy-rail__link {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  padding: 0.55rem 0.7rem 0.55rem 0.85rem;
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--ink);
  text-decoration: none;
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  transition: background-color 200ms ease, border-color 200ms ease, color 200ms ease;
}

.page-privacy .privacy-rail__link:hover,
.page-privacy .privacy-rail__link:focus-visible {
  background: var(--ice);
  border-left-color: var(--cyan);
  color: var(--brand);
  outline: none;
}

.page-privacy .privacy-rail__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--grey);
}

/* ---------- 正文 ---------- */
.page-privacy .privacy-body {
  max-width: var(--privacy-col);
  display: grid;
  gap: clamp(2.5rem, 5.5vw, 4.5rem);
  min-width: 0;
}

.page-privacy .privacy-section {
  scroll-margin-top: 6.5rem;
}

.page-privacy .privacy-section__head {
  display: grid;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.page-privacy .privacy-section__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--cyan-ink);
}

.page-privacy .privacy-section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.02em;
  font-size: clamp(1.5rem, 3vw, 2.125rem);
  line-height: 1.12;
  color: var(--ink);
}

.page-privacy .privacy-section p {
  margin: 0 0 1rem;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--ink);
}

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

.page-privacy .privacy-section a {
  color: var(--brand);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 160ms ease;
}

.page-privacy .privacy-section a:hover,
.page-privacy .privacy-section a:focus-visible {
  color: var(--red-ink);
}

/* ---------- 场景清单 ---------- */
.page-privacy .privacy-list {
  list-style: none;
  margin: 1.25rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-privacy .privacy-list__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.35rem 1rem;
  padding: 1rem 1.15rem 1.15rem;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  transition: border-color 200ms ease, transform 200ms ease;
}

.page-privacy .privacy-list__item:hover {
  border-color: var(--line-strong);
}

.page-privacy .privacy-list__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--brand);
  padding-top: 0.3rem;
}

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

.page-privacy .privacy-list__title {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-privacy .privacy-list__text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.78;
  color: var(--ink);
}

/* ---------- 强调块 ---------- */
.page-privacy .privacy-callout {
  margin: 1.5rem 0 0;
  padding: 1.15rem 1.35rem 1.2rem;
  background: var(--ice);
  border-left: 4px solid var(--brand);
  border-radius: var(--radius-sm);
}

.page-privacy .privacy-callout p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--ink);
}

.page-privacy .privacy-callout strong {
  color: var(--brand);
  font-weight: 700;
}

/* ---------- 中段视觉 ---------- */
.page-privacy .privacy-media {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--night);
  border: 1px solid var(--line);
}

.page-privacy .privacy-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-privacy .privacy-media__caption {
  margin: 0;
  padding: 0.8rem 1.25rem 0.95rem;
  background: var(--night);
  color: var(--ice);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  line-height: 1.7;
  opacity: 0.88;
}

/* ---------- 版本时间轴 ---------- */
.page-privacy .privacy-timeline {
  list-style: none;
  margin: 1.75rem 0 0;
  padding: 0;
  position: relative;
  display: grid;
  gap: 1.75rem;
}

.page-privacy .privacy-timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 0.55rem;
  bottom: 0.55rem;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(to bottom, var(--brand) 0%, var(--cyan) 58%, var(--orange) 100%);
  opacity: 0.45;
}

.page-privacy .privacy-timeline__item {
  position: relative;
  padding-left: 2.4rem;
}

.page-privacy .privacy-timeline__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35rem;
  width: 18px;
  height: 18px;
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--cream);
  border: 3px solid var(--cyan-ink);
}

.page-privacy .privacy-timeline__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.4rem 0.85rem;
  margin-bottom: 0.45rem;
}

.page-privacy .privacy-timeline__version {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--brand);
}

.page-privacy .privacy-timeline__label {
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--grey);
}

.page-privacy .privacy-timeline__text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--ink);
}

/* ---------- 回到顶部浮标 ---------- */
.page-privacy .privacy-top {
  position: fixed;
  right: clamp(1rem, 3vw, 2.25rem);
  bottom: clamp(1rem, 3vw, 2.25rem);
  z-index: 30;
  display: inline-flex;
  align-items: center;
  padding: 0.6rem 1.05rem;
  background: var(--night);
  color: var(--cream);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-decoration: none;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-pod);
  transition: transform 200ms ease, background-color 200ms ease;
}

.page-privacy .privacy-top:hover,
.page-privacy .privacy-top:focus-visible {
  transform: translateY(-2px);
  background: var(--brand);
  outline: none;
}

/* ---------- 窄屏适配 ---------- */
@media (max-width: 520px) {
  .page-privacy .privacy-hero__title {
    max-width: none;
  }
  .page-privacy .privacy-keys {
    gap: 0.6rem 1.5rem;
  }
  .page-privacy .privacy-list__item {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.3rem;
  }
  .page-privacy .privacy-list__num {
    padding-top: 0;
  }
  .page-privacy .privacy-top {
    padding: 0.55rem 0.85rem;
    letter-spacing: 0.08em;
  }
}

/* ---------- 焦点可见性 & reduced-motion ---------- */
.page-privacy a:focus-visible {
  outline: 2px solid var(--cyan-ink);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .privacy-rail__link,
  .page-privacy .privacy-list__item,
  .page-privacy .privacy-top,
  .page-privacy .privacy-section a {
    transition: none;
  }
  .page-privacy .privacy-top:hover,
  .page-privacy .privacy-top:focus-visible {
    transform: none;
  }
}