.page-privacy {
  --privacy-rail: 236px;
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-privacy .crumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 16px;
}

/* ---------- 页头 ---------- */
.page-privacy .privacy-hero {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--abyss);
  padding: 32px 20px 28px;
}

.page-privacy .privacy-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.42;
  z-index: 0;
}

.page-privacy .privacy-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(180deg, rgba(6, 20, 32, 0.5) 0%, rgba(6, 20, 32, 0.9) 70%, var(--abyss) 100%);
}

.page-privacy .privacy-hero__inner {
  position: relative;
  z-index: 2;
  max-width: 62ch;
}

.page-privacy .privacy-hero .kicker {
  color: var(--cyan);
  margin: 0 0 12px;
}

.page-privacy .privacy-hero .display {
  margin: 0;
}

.page-privacy .privacy-hero .lede {
  margin: 16px 0 0;
  max-width: 58ch;
}

/* ---------- 双栏布局 ---------- */
.page-privacy .privacy-layout {
  display: grid;
  gap: 26px;
  margin-top: 30px;
}

/* ---------- 章节索引 ---------- */
.page-privacy .privacy-index {
  align-self: start;
}

.page-privacy .privacy-index .kicker {
  color: var(--muted);
  margin: 0 0 8px;
}

.page-privacy .privacy-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
  border-left: 1px solid var(--line);
}

.page-privacy .privacy-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 10px;
  border-left: 2px solid transparent;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: color 160ms var(--ease), background-color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-privacy .privacy-index__link:hover,
.page-privacy .privacy-index__link:focus-visible {
  color: var(--ink);
  background: rgba(20, 48, 73, 0.62);
  border-left-color: var(--cyan);
}

.page-privacy .privacy-index__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan-deep);
}

.page-privacy .privacy-index__link:hover .privacy-index__num {
  color: var(--cyan);
}

.page-privacy .privacy-index__tools {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

/* ---------- 正文 ---------- */
.page-privacy .privacy-body {
  min-width: 0;
}

.page-privacy .privacy-sec {
  border-top: 1px solid var(--line);
  padding: 24px 0 28px;
}

.page-privacy .privacy-sec:first-child {
  border-top-color: var(--cyan);
}

.page-privacy .privacy-sec__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
}

.page-privacy .privacy-sec__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2px 7px;
  line-height: 1.5;
}

.page-privacy .privacy-sec .section-title {
  margin: 0;
}

.page-privacy .privacy-sec p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink);
  max-width: 72ch;
}

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

/* ---------- 定义块 ---------- */
.page-privacy .define {
  background: var(--layer);
  border-left: 2px solid var(--cyan);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 14px 16px;
  color: var(--ink);
}

/* ---------- 三类信息卡片 ---------- */
.page-privacy .facts {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: 18px 0;
}

.page-privacy .fact {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 16px 16px;
}

.page-privacy .fact::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 36px;
  height: 2px;
  background: var(--cyan);
}

.page-privacy .fact__k {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-privacy .fact .card-title {
  margin: 0 0 8px;
  color: var(--ink);
}

.page-privacy .fact p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
  max-width: none;
}

/* ---------- 信息流向图 ---------- */
.page-privacy .privacy-flow {
  margin: 20px 0;
  padding: 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-privacy .privacy-flow svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-privacy .privacy-flow .note {
  margin: 12px 0 0;
}

.page-privacy .flow-line {
  fill: none;
  stroke: var(--line);
  stroke-width: 1;
}

.page-privacy .flow-box {
  fill: var(--layer);
  stroke: var(--line);
  stroke-width: 1;
}

.page-privacy .flow-node {
  fill: rgba(53, 230, 208, 0.12);
  stroke: var(--cyan);
  stroke-width: 1;
}

.page-privacy .flow-text {
  fill: var(--ink);
  font-family: var(--font-display);
  font-size: 13px;
}

.page-privacy .flow-text--node {
  fill: var(--cyan);
  font-size: 12px;
}

/* ---------- 折叠块 ---------- */
.page-privacy .fold {
  margin: 18px 0;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-privacy .fold > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 14px;
  color: var(--cyan);
  transition: background-color 160ms var(--ease);
}

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

.page-privacy .fold > summary:hover {
  background: rgba(20, 48, 73, 0.7);
}

.page-privacy .fold > summary::after {
  content: "展开 +";
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.page-privacy .fold[open] > summary::after {
  content: "收起 −";
}

.page-privacy .fold__body {
  border-top: 1px solid var(--line);
  padding: 14px 16px 16px;
}

.page-privacy .privacy-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-privacy .privacy-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--muted);
}

.page-privacy .privacy-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 1px;
  background: var(--cyan);
}

/* ---------- 延伸入口 ---------- */
.page-privacy .privacy-links {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-top: 20px;
}

.page-privacy .privacy-links__item {
  display: block;
  padding: 14px 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-decoration: none;
  transition: border-color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-privacy .privacy-links__item:hover,
.page-privacy .privacy-links__item:focus-visible {
  border-color: var(--cyan);
  background: var(--layer);
}

.page-privacy .privacy-links__k {
  display: block;
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--cyan);
  margin-bottom: 4px;
}

.page-privacy .privacy-links__d {
  display: block;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 结尾行动区 ---------- */
.page-privacy .privacy-cta {
  margin-top: 28px;
}

.page-privacy .privacy-cta .section-title {
  margin: 0 0 10px;
}

.page-privacy .privacy-cta p {
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 66ch;
}

.page-privacy .privacy-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 固定返回顶部 ---------- */
.page-privacy .privacy-top-link {
  position: fixed;
  right: 14px;
  bottom: 18px;
  z-index: 30;
  padding: 8px 14px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--cyan);
  background: rgba(12, 33, 54, 0.92);
  border: 1px solid var(--line);
  border-radius: 999px;
  text-decoration: none;
  backdrop-filter: blur(6px);
}

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

/* ---------- 中等屏幕 ---------- */
@media (min-width: 700px) {
  .page-privacy .privacy-hero {
    padding: 40px 30px 36px;
  }

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

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

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

/* ---------- 桌面双栏 ---------- */
@media (min-width: 1000px) {
  .page-privacy .privacy-hero {
    padding: 52px 44px 46px;
  }

  .page-privacy .privacy-layout {
    grid-template-columns: var(--privacy-rail) minmax(0, 1fr);
    gap: 44px;
    margin-top: 40px;
  }

  .page-privacy .privacy-index {
    position: sticky;
    top: 88px;
  }

  .page-privacy .privacy-top-link {
    display: none;
  }

  .page-privacy .privacy-sec {
    padding: 30px 0 34px;
  }

  .page-privacy .privacy-sec p {
    font-size: 16px;
  }
}

/* ---------- 动效收敛 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-privacy * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}