.page-privacy {
  --privacy-measure: 37em;
  position: relative;
  overflow-x: hidden;
  color: var(--silver-400);
  background:
    radial-gradient(1100px 560px at 82% -10%, rgba(63, 111, 122, 0.18), transparent 64%),
    radial-gradient(880px 480px at 4% 44%, rgba(201, 162, 39, 0.07), transparent 68%),
    var(--ink-900);
}

.page-privacy::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.55;
  background-image: repeating-linear-gradient(
    115deg,
    rgba(234, 240, 244, 0.022) 0 1px,
    transparent 1px 7px
  );
}

.page-privacy > * {
  position: relative;
  z-index: 1;
}

/* 顶部通栏纹理 */
.page-privacy__banner {
  position: relative;
  height: clamp(160px, 23vw, 280px);
  overflow: hidden;
  isolation: isolate;
}

.page-privacy__banner img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 42%;
  opacity: 0.3;
  filter: saturate(0.62) contrast(1.08);
}

.page-privacy__banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(4, 18, 29, 0.5) 0%, rgba(7, 26, 43, 0.86) 60%, var(--ink-900) 100%),
    linear-gradient(90deg, rgba(7, 26, 43, 0.88) 0%, rgba(7, 26, 43, 0) 46%);
}

.page-privacy .breadcrumb {
  margin-top: clamp(18px, 2.4vw, 28px);
}

/* 页首 */
.page-privacy__head {
  padding-block: clamp(18px, 3vw, 34px) clamp(12px, 2vw, 22px);
}

.page-privacy__stamp {
  display: inline-flex;
  align-items: center;
  margin-bottom: clamp(14px, 2vw, 20px);
  padding: 6px 14px;
  border: 1px solid var(--line-gold);
  border-radius: 999px;
  background: rgba(201, 162, 39, 0.07);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--gold-300);
}

.page-privacy__head h1 {
  max-width: 19em;
  font-family: var(--font-head);
  font-size: clamp(1.7rem, 4.1vw, 2.8rem);
  font-weight: 700;
  line-height: 1.26;
  letter-spacing: 0.02em;
  color: var(--silver-100);
}

.page-privacy__lede {
  max-width: var(--privacy-measure);
  margin-top: clamp(16px, 2.2vw, 24px);
  font-size: 1.02rem;
  line-height: 1.95;
  color: var(--silver-400);
}

/* 主体两栏 */
.page-privacy__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  padding-block: clamp(22px, 3.4vw, 44px) clamp(52px, 7vw, 96px);
}

.page-privacy__stream {
  min-width: 0;
}

/* 章节 */
.page-privacy__chapter {
  padding-block: clamp(26px, 3.8vw, 48px);
  border-top: 1px solid var(--line-soft);
}

.page-privacy__chapter:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-privacy__chapter .chapter {
  margin-bottom: clamp(14px, 2vw, 20px);
}

.page-privacy__chapter .prose {
  max-width: var(--privacy-measure);
  font-size: 1rem;
  line-height: 1.95;
  color: var(--silver-400);
}

.page-privacy__chapter .prose p + p {
  margin-top: 1em;
}

.page-privacy__inline-link {
  color: var(--gold-300);
  text-decoration: none;
  border-bottom: 1px solid var(--line-gold);
  transition: color 200ms var(--ease-crisp), border-color 200ms var(--ease-crisp);
}

.page-privacy__inline-link:hover,
.page-privacy__inline-link:focus-visible {
  color: var(--silver-100);
  border-bottom-color: var(--gold-500);
}

/* 章末小结 */
.page-privacy__note {
  max-width: var(--privacy-measure);
  margin-top: clamp(18px, 2.4vw, 26px);
  padding-top: 12px;
  border-top: 1px dashed var(--line-soft);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 500;
  line-height: 1.72;
  letter-spacing: 0.02em;
  color: rgba(185, 194, 201, 0.8);
}

.page-privacy__note::before {
  content: "→";
  margin-right: 8px;
  color: var(--gold-500);
}

/* 编号列表 */
.page-privacy__list {
  counter-reset: plist;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  max-width: var(--privacy-measure);
  margin-top: clamp(16px, 2.2vw, 24px);
}

.page-privacy__list li {
  position: relative;
  padding-left: 2.4em;
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--silver-400);
}

.page-privacy__list li::before {
  counter-increment: plist;
  content: counter(plist, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.34em;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--gold-500);
}

.page-privacy__list li strong {
  display: block;
  margin-bottom: 3px;
  font-weight: 600;
  color: var(--silver-100);
}

/* 左线条目 */
.page-privacy__keys {
  display: grid;
  gap: 18px;
  max-width: var(--privacy-measure);
  margin-top: clamp(16px, 2.2vw, 24px);
}

.page-privacy__key {
  padding: 4px 0 4px 16px;
  border-left: 2px solid var(--gold-500);
  font-size: 0.97rem;
  line-height: 1.9;
  color: var(--silver-400);
}

.page-privacy__key strong {
  font-weight: 600;
  color: var(--silver-100);
}

/* 折叠组 */
.page-privacy .disclosure {
  max-width: var(--privacy-measure);
  margin-top: clamp(18px, 2.4vw, 26px);
}

.page-privacy .disclosure__trigger {
  min-height: 44px;
}

.page-privacy .disclosure__body {
  padding-top: 4px;
}

.page-privacy .disclosure__body .page-privacy__list {
  margin-top: 0;
}

/* 联系渠道 */
.page-privacy__channels {
  display: grid;
  gap: 8px;
  max-width: var(--privacy-measure);
  margin-top: clamp(18px, 2.4vw, 24px);
  padding: clamp(14px, 2vw, 20px) clamp(16px, 2.2vw, 22px);
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--gold-500);
  border-radius: var(--radius-s);
  background: rgba(13, 43, 63, 0.62);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--silver-100);
}

.page-privacy__channels span {
  display: block;
}

/* 收尾卡片 */
.page-privacy__foot {
  margin-top: clamp(30px, 4.4vw, 56px);
}

.page-privacy__card {
  padding: clamp(24px, 3.6vw, 42px);
}

.page-privacy__card h2 {
  margin-top: 8px;
  font-family: var(--font-head);
  font-size: clamp(1.22rem, 2.4vw, 1.68rem);
  font-weight: 700;
  line-height: 1.36;
  letter-spacing: 0.02em;
  color: var(--silver-100);
}

.page-privacy__card p {
  max-width: 34em;
  margin-top: 12px;
  font-size: 0.97rem;
  line-height: 1.9;
  color: var(--silver-400);
}

.page-privacy__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 2.4vw, 26px);
}

/* 右侧章节索引 */
@media (min-width: 1180px) {
  .page-privacy__index {
    position: sticky;
    top: 112px;
    align-self: start;
  }
}

@media (max-width: 1179px) {
  .page-privacy__index {
    display: none;
  }
}

/* 窄屏 */
@media (max-width: 640px) {
  .page-privacy__banner {
    height: 148px;
  }

  .page-privacy__head h1 {
    font-size: 1.62rem;
    line-height: 1.32;
  }

  .page-privacy__lede,
  .page-privacy__chapter .prose {
    font-size: 0.97rem;
    line-height: 1.9;
  }

  .page-privacy__list li,
  .page-privacy__key {
    font-size: 0.92rem;
  }

  .page-privacy__list li {
    padding-left: 2.1em;
  }

  .page-privacy__channels {
    font-size: 0.78rem;
  }

  .page-privacy__actions .btn {
    flex: 1 1 auto;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .page-privacy__inline-link,
  .page-privacy .disclosure__trigger {
    transition: none;
  }
}