.page-privacy {
  --pv-rule: rgba(201, 212, 220, 0.9);
  --pv-rule-soft: rgba(201, 212, 220, 0.55);
  --pv-accent-soft: rgba(14, 110, 122, 0.075);
  --pv-idx-w: 214px;
  --pv-measure: 74ch;
  background: var(--c-paper);
}

/* ---------- 首屏 ---------- */

.page-privacy .pv-hero {
  position: relative;
  background: var(--c-night);
  color: var(--c-paper);
  padding: clamp(24px, 4vw, 44px) 0 clamp(40px, 6vw, 76px);
  overflow: hidden;
}

.page-privacy .pv-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(201, 212, 220, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(201, 212, 220, 0.07) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
}

.page-privacy .pv-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--c-flag);
}

.page-privacy .pv-hero__inner {
  position: relative;
  z-index: 1;
}

.page-privacy .pv-hero .breadcrumb {
  margin: 0 0 clamp(22px, 3vw, 34px);
  font-size: 13px;
  line-height: 1.6;
  color: rgba(245, 248, 249, 0.6);
}

.page-privacy .pv-hero .breadcrumb a {
  color: var(--c-cyan);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-privacy .pv-hero .breadcrumb a:hover,
.page-privacy .pv-hero .breadcrumb a:focus-visible {
  color: var(--c-flag);
}

.page-privacy .pv-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--c-flag);
}

.page-privacy .pv-hero h1 {
  margin: 0 0 20px;
  max-width: 22ch;
  font-size: clamp(30px, 5.6vw, 54px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--c-paper);
}

.page-privacy .pv-hero__lead {
  margin: 0 0 clamp(24px, 3vw, 34px);
  max-width: 60ch;
  font-size: clamp(15.5px, 1.6vw, 17.5px);
  line-height: 1.85;
  color: rgba(245, 248, 249, 0.8);
}

.page-privacy .pv-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-privacy .pv-hero__tags li {
  padding: 6px 13px;
  border: 1px solid rgba(201, 212, 220, 0.3);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: rgba(245, 248, 249, 0.88);
}

/* ---------- 通栏图 ---------- */

.page-privacy .pv-banner {
  position: relative;
  height: 240px;
  overflow: hidden;
  background: var(--c-panel);
}

.page-privacy .pv-banner img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  object-position: center;
  filter: saturate(0.5) brightness(0.88) contrast(1.06);
}

.page-privacy .pv-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(11, 26, 51, 0.6) 0%,
    rgba(11, 26, 51, 0.12) 46%,
    rgba(245, 248, 249, 0.92) 100%
  );
  pointer-events: none;
}

/* ---------- 主体骨架 ---------- */

.page-privacy .pv-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
  padding-top: clamp(36px, 5vw, 68px);
  padding-bottom: clamp(56px, 8vw, 104px);
}

/* ---------- 章节索引 ---------- */

.page-privacy .pv-index {
  border-top: 2px solid var(--c-lake);
  padding-top: 16px;
}

.page-privacy .pv-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--c-slate);
}

.page-privacy .pv-index__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-privacy .pv-index__list a {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.5;
  color: var(--c-slate);
  text-decoration: none;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-privacy .pv-index__list a:hover,
.page-privacy .pv-index__list a:focus-visible {
  color: var(--c-night);
  background: var(--pv-accent-soft);
  border-left-color: var(--c-lake);
}

.page-privacy .pv-index__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  color: var(--c-cyan);
}

/* ---------- 正文栏 ---------- */

.page-privacy .pv-body {
  min-width: 0;
  max-width: var(--pv-measure);
}

.page-privacy .pv-sec {
  position: relative;
  scroll-margin-top: 28px;
}

.page-privacy .pv-sec + .pv-sec {
  margin-top: clamp(44px, 5vw, 64px);
  padding-top: clamp(44px, 5vw, 64px);
  border-top: 1px solid var(--pv-rule);
}

.page-privacy .pv-sec h2 {
  margin: 0 0 18px;
  font-size: clamp(21px, 2.5vw, 28px);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.015em;
  color: var(--c-night);
}

.page-privacy .pv-sec__num {
  display: inline-block;
  margin-right: 13px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.5em;
  font-weight: 400;
  letter-spacing: 0.12em;
  vertical-align: 0.32em;
  color: var(--c-cyan);
}

.page-privacy .pv-sec p {
  margin: 0 0 1.4em;
  font-size: 16px;
  line-height: 1.9;
  color: var(--c-night);
}

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

.page-privacy .pv-sec a {
  color: var(--c-lake);
  text-underline-offset: 3px;
  transition: color var(--dur) var(--ease);
}

.page-privacy .pv-sec a:hover,
.page-privacy .pv-sec a:focus-visible {
  color: var(--c-cyan);
}

/* ---------- 条目列表 ---------- */

.page-privacy .pv-list {
  margin: 0 0 1.6em;
  padding: 0;
  list-style: none;
}

.page-privacy .pv-list li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 14px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--c-night);
}

.page-privacy .pv-list li:last-child {
  margin-bottom: 0;
}

.page-privacy .pv-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.8em;
  width: 10px;
  height: 2px;
  background: var(--c-cyan);
}

.page-privacy .pv-list strong {
  font-weight: 700;
  color: var(--c-lake);
}

/* ---------- 提示块 ---------- */

.page-privacy .pv-callout {
  margin: 0 0 1.6em;
  padding: 18px 22px;
  background: var(--pv-accent-soft);
  border-left: 3px solid var(--c-lake);
}

.page-privacy .pv-callout p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--c-night);
}

/* ---------- 留存期限表 ---------- */

.page-privacy .pv-terms {
  margin: 0 0 1.8em;
  border-top: 1px solid var(--pv-rule);
}

.page-privacy .pv-terms__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--pv-rule);
}

.page-privacy .pv-terms dt {
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--c-night);
}

.page-privacy .pv-terms dd {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13.5px;
  letter-spacing: 0.02em;
  color: var(--c-lake);
}

/* ---------- 折叠步骤 ---------- */

.page-privacy .pv-fold {
  margin: 0 0 1.6em;
  border: 1px solid var(--pv-rule);
  background: rgba(245, 248, 249, 0.72);
}

.page-privacy .pv-fold__btn {
  display: block;
  width: 100%;
  padding: 14px 18px;
  border: 0;
  background: none;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--c-lake);
  cursor: pointer;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-privacy .pv-fold__btn:hover,
.page-privacy .pv-fold__btn:focus-visible {
  background: var(--pv-accent-soft);
  color: var(--c-cyan);
}

.page-privacy .pv-fold__panel {
  padding: 0 18px 18px;
  border-top: 1px solid var(--pv-rule-soft);
}

.page-privacy .pv-steps {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-privacy .pv-steps li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 12px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-night);
}

.page-privacy .pv-steps li:last-child {
  margin-bottom: 0;
}

.page-privacy .pv-steps__n {
  position: absolute;
  left: 0;
  top: 0.1em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border: 1px solid var(--c-cyan);
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  color: var(--c-lake);
}

/* ---------- 页尾说明 ---------- */

.page-privacy .pv-tailnote {
  margin-top: clamp(44px, 5vw, 64px);
  padding: 16px 20px;
  border-left: 3px solid var(--c-line);
  background: rgba(18, 42, 77, 0.045);
}

.page-privacy .pv-tailnote p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--c-slate);
}

.page-privacy .pv-tailnote a {
  color: var(--c-lake);
  text-underline-offset: 3px;
}

.page-privacy .pv-tailnote a:hover,
.page-privacy .pv-tailnote a:focus-visible {
  color: var(--c-cyan);
}

/* ---------- 中等屏幕 ---------- */

@media (min-width: 620px) {
  .page-privacy .pv-terms__row {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: baseline;
    gap: 24px;
  }

  .page-privacy .pv-index__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 桌面端 ---------- */

@media (min-width: 980px) {
  .page-privacy .pv-layout {
    grid-template-columns: var(--pv-idx-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-privacy .pv-index {
    position: sticky;
    top: 32px;
  }

  .page-privacy .pv-index__list {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-privacy .pv-sec__num {
    font-size: 13px;
    letter-spacing: 0.14em;
    vertical-align: 0.1em;
    margin-right: 16px;
    color: var(--c-lake);
  }

  .page-privacy .pv-hero h1 {
    max-width: 24ch;
  }
}

/* ---------- 大屏 ---------- */

@media (min-width: 1280px) {
  .page-privacy .pv-banner {
    height: 240px;
  }

  .page-privacy .pv-body {
    max-width: 78ch;
  }
}

/* ---------- 减少动态 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-privacy .pv-index__list a,
  .page-privacy .pv-fold__btn,
  .page-privacy .pv-hero .breadcrumb a {
    transition-duration: 0ms;
  }
}