.page-privacy {
  --privacy-rail-w: 216px;
  --privacy-body-w: 620px;
}

.page-privacy .privacy-hero {
  padding-top: clamp(20px, 4vw, 44px);
}

.page-privacy .privacy-hero__title {
  max-width: 22ch;
  margin-top: 16px;
}

.page-privacy .privacy-hero__lede {
  max-width: 60ch;
  margin-top: 20px;
}

.page-privacy .privacy-hero__media {
  margin: clamp(28px, 5vw, 52px) 0 0;
  padding: 0 var(--gutter);
  max-width: var(--shell-max);
  margin-left: auto;
  margin-right: auto;
}

.page-privacy .privacy-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border: 1px solid var(--line-soft);
  border-top-color: var(--line-copper);
  background: var(--ink-800);
}

/* ---------- 主体布局：左索引 + 窄幅正文 ---------- */

.page-privacy .privacy-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  padding-bottom: clamp(56px, 9vw, 104px);
  margin-top: clamp(36px, 6vw, 64px);
}

@media (min-width: 900px) {
  .page-privacy .privacy-layout {
    grid-template-columns: var(--privacy-rail-w) minmax(0, var(--privacy-body-w));
    justify-content: center;
    gap: 72px;
    align-items: start;
  }
}

/* ---------- 章节索引 ---------- */

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

@media (min-width: 900px) {
  .page-privacy .privacy-rail {
    position: sticky;
    top: 112px;
  }
}

.page-privacy .privacy-rail__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-privacy .privacy-rail .index-rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--slate-400);
  text-decoration: none;
  border-bottom: 1px solid var(--line-soft);
  transition: color 160ms ease-out, border-color 160ms ease-out;
}

.page-privacy .privacy-rail .index-rail__link:hover,
.page-privacy .privacy-rail .index-rail__link:focus-visible {
  color: var(--copper-200);
  border-bottom-color: var(--line-copper);
}

.page-privacy .privacy-rail__num {
  color: var(--copper-500);
  font-size: 12px;
  letter-spacing: 0.1em;
  flex: none;
}

/* ---------- 正文分区 ---------- */

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

.page-privacy .privacy-section {
  padding: clamp(30px, 4.5vw, 46px) 0;
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: 104px;
}

.page-privacy .privacy-section:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.page-privacy .privacy-section__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 18px;
}

.page-privacy .privacy-section__num {
  flex: none;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--copper-500);
  border: 1px solid var(--line-copper);
  padding: 2px 7px 3px;
  line-height: 1.2;
}

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

.page-privacy .privacy-body .prose {
  max-width: 62ch;
}

/* ---------- 条目列表 ---------- */

.page-privacy .privacy-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 13px;
}

.page-privacy .privacy-list > li {
  position: relative;
  padding-left: 24px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate-400);
}

.page-privacy .privacy-list > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.82em;
  width: 12px;
  height: 1px;
  background: var(--copper-500);
}

.page-privacy .privacy-list strong {
  color: var(--paper-100);
  font-weight: 700;
  margin-right: 2px;
}

.page-privacy .privacy-mark {
  color: var(--cyan-400);
  font-size: 0.94em;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

/* ---------- 页尾链接 ---------- */

.page-privacy .privacy-links {
  list-style: none;
  margin: 26px 0 0;
  padding: 18px 0 0;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
}

.page-privacy .privacy-links a {
  display: inline-block;
  padding: 7px 14px;
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--copper-200);
  text-decoration: none;
  border: 1px solid var(--line-copper);
  transition: background-color 160ms ease-out, color 160ms ease-out;
}

.page-privacy .privacy-links a:hover,
.page-privacy .privacy-links a:focus-visible {
  background: var(--copper-500);
  color: var(--ink-950);
}

.page-privacy .privacy-top {
  margin: 40px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
}

.page-privacy .privacy-top a {
  color: var(--slate-400);
  text-decoration: none;
  border-bottom: 1px solid var(--line-mid);
  padding-bottom: 2px;
  transition: color 160ms ease-out, border-color 160ms ease-out;
}

.page-privacy .privacy-top a:hover,
.page-privacy .privacy-top a:focus-visible {
  color: var(--copper-200);
  border-bottom-color: var(--line-copper);
}

/* ---------- 窄屏保护 ---------- */

@media (max-width: 640px) {
  .page-privacy .privacy-hero__title {
    max-width: 100%;
  }

  .page-privacy .privacy-section__head {
    gap: 10px;
  }

  .page-privacy .privacy-list > li {
    padding-left: 18px;
    font-size: 14.5px;
  }

  .page-privacy .privacy-list > li::before {
    width: 9px;
  }

  .page-privacy .privacy-links {
    gap: 8px;
  }

  .page-privacy .privacy-links a {
    padding: 6px 11px;
    font-size: 12.5px;
  }
}

/* ---------- 打印视图 ---------- */

@media print {
  .page-privacy .privacy-rail,
  .page-privacy .privacy-top {
    display: none;
  }

  .page-privacy .privacy-hero__media {
    display: none;
  }

  .page-privacy .privacy-section {
    break-inside: avoid;
    padding: 18px 0;
  }

  .page-privacy .privacy-body .prose,
  .page-privacy .privacy-list > li {
    max-width: 100%;
  }
}
<<<END>>>