.page-privacy {
  --prv-ink: #0A1A16;
  --prv-ink-soft: #2C3E39;
  --prv-line: rgba(6, 17, 15, 0.18);
  --prv-line-soft: rgba(6, 17, 15, 0.08);
  --prv-measure: 66ch;
  --prv-focus: #B87514;
  background: var(--paper);
  color: var(--prv-ink);
  font-family: var(--font-body);
  padding-block: clamp(30px, 6vw, 80px) 0;
  position: relative;
}

.page-privacy * {
  overflow-wrap: anywhere;
}

.page-privacy img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ---------- 容器 ---------- */
.page-privacy .prv-shell {
  margin-inline: auto;
  max-width: 1240px;
  padding-inline: clamp(18px, 5vw, 64px);
}

/* ---------- 首屏 ---------- */
.page-privacy .prv-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: end;
}

.page-privacy .prv-kicker {
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber-deep);
}

.page-privacy .prv-title {
  margin: 0;
  font-size: clamp(2.4rem, 6.2vw, 4.2rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: 0.01em;
  color: var(--ink-abyss);
}

.page-privacy .prv-lede {
  max-width: 46ch;
  margin: clamp(18px, 2.4vw, 28px) 0 0;
  font-size: clamp(1rem, 1.1vw, 1.07rem);
  line-height: 1.9;
  color: var(--prv-ink-soft);
}

.page-privacy .prv-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: clamp(20px, 3vw, 34px);
}

.page-privacy .prv-meta span {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--graphite);
}

.page-privacy .prv-visual {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--prv-line);
  background: var(--ink-surface);
}

.page-privacy .prv-visual img {
  width: 100%;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  opacity: 0.9;
}

/* ---------- 文档版本刻度线 ---------- */
.page-privacy .prv-scale {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  margin-top: clamp(44px, 7vw, 90px);
  border-top: 1px solid var(--prv-line);
}

.page-privacy .prv-scale__tick {
  position: relative;
  display: block;
  padding: 16px 8px 0 0;
  text-decoration: none;
  color: var(--graphite);
  transition: color var(--dur) var(--ease);
}

.page-privacy .prv-scale__tick::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 1px;
  height: 7px;
  background: var(--prv-ink);
  opacity: 0.45;
  transition: height var(--dur) var(--ease), opacity var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-privacy .prv-scale__tick:hover,
.page-privacy .prv-scale__tick:focus-visible {
  color: var(--amber-deep);
}

.page-privacy .prv-scale__tick:hover::before,
.page-privacy .prv-scale__tick:focus-visible::before {
  height: 17px;
  opacity: 1;
  background-color: var(--amber-deep);
}

.page-privacy .prv-scale__tick:focus-visible {
  outline: 2px solid var(--prv-focus);
  outline-offset: 3px;
}

.page-privacy .prv-scale__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
}

.page-privacy .prv-scale__name {
  display: none;
  margin-top: 8px;
  font-size: 11px;
  line-height: 1.5;
  letter-spacing: 0.04em;
}

/* ---------- 正文文档 ---------- */
.page-privacy .prv-doc {
  max-width: 920px;
  margin: clamp(42px, 7vw, 84px) auto 0;
  padding-bottom: clamp(52px, 9vw, 120px);
}

.page-privacy .prv-section {
  display: grid;
  grid-template-columns: 1fr;
  row-gap: 10px;
}

.page-privacy .prv-section + .prv-section {
  margin-top: clamp(40px, 6vw, 64px);
  padding-top: clamp(24px, 3.5vw, 40px);
  border-top: 1px solid var(--prv-line-soft);
}

.page-privacy .prv-section__num {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1;
  letter-spacing: 0.16em;
  color: var(--amber-deep);
  padding-top: 0.25rem;
}

.page-privacy .prv-section__title {
  margin: 0;
  font-size: clamp(1.3rem, 1.1rem + 1vw, 1.85rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0.005em;
  color: var(--ink-abyss);
}

.page-privacy .prv-section__body p {
  max-width: var(--prv-measure);
  margin: 1.05em 0 0;
  font-size: 1rem;
  line-height: 1.95;
  color: var(--prv-ink-soft);
  text-indent: 2em;
}

.page-privacy .prv-section__body a {
  color: var(--ink-abyss);
  text-decoration: underline;
  text-decoration-color: var(--amber-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--dur) var(--ease);
}

.page-privacy .prv-section__body a:hover,
.page-privacy .prv-section__body a:focus-visible {
  color: var(--amber-deep);
}

.page-privacy .prv-section__body a:focus-visible {
  outline: 2px solid var(--prv-focus);
  outline-offset: 2px;
}

/* ---------- 折叠面板 ---------- */
.page-privacy .prv-fold {
  max-width: var(--prv-measure);
  margin-top: 1.7em;
  border-top: 1px solid var(--prv-line);
  padding-top: 0.9em;
}

.page-privacy .prv-fold > summary {
  position: relative;
  cursor: pointer;
  list-style: none;
  padding: 4px 26px 4px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--prv-ink);
}

.page-privacy .prv-fold > summary::-webkit-details-marker {
  display: none;
}

.page-privacy .prv-fold > summary::after {
  content: "–";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 15px;
  line-height: 1;
  color: var(--amber-deep);
}

.page-privacy .prv-fold:not([open]) > summary::after {
  content: "+";
}

.page-privacy .prv-fold > summary:hover {
  color: var(--amber-deep);
}

.page-privacy .prv-fold > summary:focus-visible {
  outline: 2px solid var(--prv-focus);
  outline-offset: 3px;
}

.page-privacy .prv-fold__body {
  padding-top: 0.6em;
}

.page-privacy .prv-keys {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-privacy .prv-keys li {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 4px 20px;
  padding: 11px 0;
  border-bottom: 1px solid var(--prv-line-soft);
  font-size: 0.92rem;
  line-height: 1.65;
}

.page-privacy .prv-keys li span:first-child {
  color: var(--prv-ink);
}

.page-privacy .prv-keys li span:last-child {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--graphite);
}

/* ---------- 回到顶部 ---------- */
.page-privacy .prv-top {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: clamp(36px, 5vw, 54px);
  padding-top: 12px;
  border-top: 1px solid var(--prv-line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--prv-ink);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.page-privacy .prv-top::after {
  content: "↑";
  font-size: 13px;
  line-height: 1;
  color: var(--amber-deep);
}

.page-privacy .prv-top:hover,
.page-privacy .prv-top:focus-visible {
  color: var(--amber-deep);
}

.page-privacy .prv-top:focus-visible {
  outline: 2px solid var(--prv-focus);
  outline-offset: 3px;
}

/* ---------- 中等屏 ---------- */
@media (min-width: 760px) {
  .page-privacy .prv-section {
    grid-template-columns: 56px minmax(0, 1fr);
    column-gap: 28px;
    row-gap: 0;
  }

  .page-privacy .prv-section__num {
    padding-top: 0.95rem;
  }

  .page-privacy .prv-scale__name {
    display: block;
  }
}

/* ---------- 桌面端 ---------- */
@media (min-width: 920px) {
  .page-privacy .prv-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4.5fr);
    column-gap: clamp(32px, 5vw, 70px);
  }

  .page-privacy .prv-doc {
    margin-left: 0;
  }

  .page-privacy .prv-section {
    grid-template-columns: 64px minmax(0, 1fr);
    column-gap: 32px;
  }

  .page-privacy .prv-section__num {
    font-size: 13px;
    padding-top: 1.05rem;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-privacy .prv-scale__tick,
  .page-privacy .prv-scale__tick::before,
  .page-privacy .prv-section__body a,
  .page-privacy .prv-top {
    transition: none;
  }
}