.page-privacy {
  --privacy-measure: 34em;
  --privacy-index-w: 15.5rem;
  background:
    radial-gradient(1200px 520px at 88% -12%, rgba(126, 154, 140, 0.14), transparent 70%),
    linear-gradient(180deg, var(--paper) 0%, var(--paper) 55%, var(--paper-2) 100%);
  padding-bottom: 4.5rem;
}

.page-privacy .privacy-shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ---------- 首屏 ---------- */
.page-privacy .privacy-hero {
  position: relative;
  padding: 1.5rem 0 0.5rem;
  max-width: 46rem;
}

.page-privacy .privacy-hero .kicker {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--sage-500);
  margin: 0 0 1.1rem;
}

.page-privacy .privacy-hero h1 {
  margin: 0 0 1.1rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.2rem, 8vw, 3.6rem);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-privacy .privacy-lead {
  margin: 0;
  padding: 1rem 0 1rem 1.1rem;
  border-left: 3px solid var(--amber-500);
  font-size: var(--fs-md);
  line-height: 1.82;
  color: var(--ink-700);
  background: linear-gradient(90deg, rgba(224, 163, 62, 0.09), rgba(224, 163, 62, 0));
  max-width: var(--privacy-measure);
}

/* ---------- 首图 ---------- */
.page-privacy .privacy-media {
  margin: 2rem 0 0;
}

.page-privacy .privacy-media .media-frame {
  border: var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--stone-100);
  box-shadow: var(--shadow-sheet);
}

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

.page-privacy .privacy-media .media-caption {
  display: block;
  margin-top: 0.7rem;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.06em;
  color: var(--graphite-soft);
}

/* ---------- 双栏骨架 ---------- */
.page-privacy .privacy-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2.25rem;
  margin-top: 2.75rem;
}

/* ---------- 章节索引 ---------- */
.page-privacy .privacy-index {
  border-top: 2px solid var(--ink-900);
  padding-top: 0.85rem;
}

.page-privacy .privacy-index__title {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.2em;
  color: var(--graphite-soft);
}

.page-privacy .privacy-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.1rem;
}

.page-privacy .privacy-index__link {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  padding: 0.4rem 0;
  font-size: var(--fs-sm);
  line-height: 1.5;
  color: var(--graphite);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-privacy .privacy-index__link:hover,
.page-privacy .privacy-index__link:focus-visible {
  color: var(--ink-900);
  border-bottom-color: var(--amber-500);
}

.page-privacy .privacy-index__num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--sage-500);
  flex: none;
}

.page-privacy .privacy-index__top {
  display: inline-block;
  margin-top: 1rem;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  color: var(--ink-500);
  text-decoration: none;
  border-bottom: 1px solid var(--stone-200);
  padding-bottom: 0.15rem;
}

.page-privacy .privacy-index__top:hover,
.page-privacy .privacy-index__top:focus-visible {
  color: var(--ink-900);
  border-bottom-color: var(--amber-500);
}

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

.page-privacy .privacy-section + .privacy-section {
  margin-top: 2.75rem;
  padding-top: 2.5rem;
  border-top: var(--line);
}

.page-privacy .privacy-section__head {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  margin-bottom: 1rem;
  padding-left: 0.85rem;
  border-left: 3px solid var(--sage-500);
}

.page-privacy .privacy-section__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.12em;
  color: var(--sage-500);
  text-decoration: none;
}

.page-privacy .privacy-section__num:hover,
.page-privacy .privacy-section__num:focus-visible {
  color: var(--amber-500);
}

.page-privacy .privacy-section__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0;
  color: var(--ink-900);
}

.page-privacy .privacy-body p {
  margin: 0 0 1.05em;
  max-width: var(--privacy-measure);
  font-size: var(--fs-md);
  line-height: 1.85;
  color: var(--graphite);
}

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

.page-privacy .privacy-body a {
  color: var(--ink-500);
  text-decoration: underline;
  text-decoration-color: var(--amber-300);
  text-underline-offset: 3px;
}

.page-privacy .privacy-body a:hover,
.page-privacy .privacy-body a:focus-visible {
  color: var(--ink-900);
  text-decoration-color: var(--amber-500);
}

/* ---------- 两类信息 ---------- */
.page-privacy .privacy-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.9rem;
  margin: 1.3rem 0 1.3rem;
  max-width: var(--privacy-measure);
}

.page-privacy .privacy-split__item {
  background: var(--paper-2);
  border: var(--line);
  border-radius: var(--radius-s);
  padding: 1.05rem 1.1rem;
  box-shadow: var(--shadow-sheet);
}

.page-privacy .privacy-split__item .tag {
  display: inline-block;
  margin-bottom: 0.6rem;
}

.page-privacy .privacy-split__item p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.78;
  color: var(--graphite);
}

/* ---------- 用途清单 ---------- */
.page-privacy .privacy-list {
  list-style: none;
  margin: 1.1rem 0 1.3rem;
  padding: 0;
  max-width: var(--privacy-measure);
  display: grid;
  gap: 0.7rem;
}

.page-privacy .privacy-list li {
  position: relative;
  padding-left: 1.4rem;
  font-size: 0.98rem;
  line-height: 1.8;
  color: var(--graphite);
}

.page-privacy .privacy-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 0.55rem;
  height: 2px;
  background: var(--amber-500);
}

.page-privacy .privacy-list strong {
  font-weight: 600;
  color: var(--ink-900);
}

/* ---------- 联系块 ---------- */
.page-privacy .privacy-contact {
  margin: 1.3rem 0 1.4rem;
  padding: 1.3rem 1.2rem;
  border-radius: var(--radius-m);
  background: var(--ink-900);
  background-image: linear-gradient(150deg, var(--ink-700) 0%, var(--ink-900) 62%);
  color: var(--paper);
  display: grid;
  gap: 0.7rem;
  max-width: var(--privacy-measure);
  box-shadow: var(--shadow-float);
}

.page-privacy .privacy-contact__line {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.35rem 0.85rem;
  margin: 0;
  max-width: none;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-privacy .privacy-contact__key {
  flex: none;
  min-width: 4.4rem;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--amber-300);
}

.page-privacy .privacy-contact__note {
  margin: 0.4rem 0 0;
  max-width: none;
  padding-top: 0.8rem;
  border-top: 1px solid rgba(247, 244, 236, 0.22);
  font-size: var(--fs-sm);
  line-height: 1.72;
  color: rgba(247, 244, 236, 0.78);
}

.page-privacy .privacy-footnote {
  font-size: var(--fs-sm);
  line-height: 1.8;
  color: var(--graphite-soft);
}

/* ---------- 中等宽度：索引转双列 ---------- */
@media (min-width: 520px) and (max-width: 899px) {
  .page-privacy .privacy-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 1.5rem;
  }
}

/* ---------- 桌面：右侧固定索引 + 左栏长文 ---------- */
@media (min-width: 900px) {
  .page-privacy {
    padding-bottom: 6rem;
  }

  .page-privacy .privacy-hero {
    padding-top: 2.5rem;
  }

  .page-privacy .privacy-layout {
    grid-template-columns: minmax(0, 1fr) var(--privacy-index-w);
    column-gap: 3.5rem;
    margin-top: 3.5rem;
    align-items: start;
  }

  .page-privacy .privacy-body {
    order: 1;
  }

  .page-privacy .privacy-index {
    order: 2;
    position: sticky;
    top: 6.5rem;
  }

  .page-privacy .privacy-section + .privacy-section {
    margin-top: 3.25rem;
    padding-top: 3rem;
  }

  .page-privacy .privacy-split {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.1rem;
  }
}

@media (min-width: 1180px) {
  .page-privacy .privacy-hero h1 {
    font-size: 3.6rem;
  }
}