.page-privacy {
  --pv-index-width: 208px;
  --pv-line: var(--line-blue);
  --pv-tag-cyan: rgba(43, 240, 210, 0.42);
  --pv-tag-amber: rgba(255, 178, 91, 0.42);
  color: var(--text);
  padding-bottom: clamp(3rem, 8vw, 6rem);
}

.page-privacy .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin: 1.5rem 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
  color: var(--text-soft);
}

.page-privacy .breadcrumbs li + li::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--line-blue);
}

.page-privacy .breadcrumbs a {
  color: var(--text-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-privacy .breadcrumbs a:hover,
.page-privacy .breadcrumbs a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-privacy .breadcrumbs [aria-current="page"] {
  color: var(--text);
}

/* ---------- hero ---------- */

.page-privacy .doc-hero {
  padding-top: clamp(1.75rem, 5vw, 3.25rem);
  max-width: 62rem;
}

.page-privacy .doc-hero h1 {
  margin: 0.9rem 0 1.1rem;
  font-family: var(--font-display);
  font-size: clamp(2.15rem, 5.6vw, 4.1rem);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.03em;
  background: linear-gradient(96deg, var(--text) 34%, var(--cyan) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-privacy .hero-lede {
  max-width: 54ch;
  margin: 0;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--text-soft);
}

.page-privacy .hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1.6rem;
  margin: 1.7rem 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.78125rem;
  letter-spacing: 0.03em;
  color: var(--text-soft);
  font-variant-numeric: tabular-nums;
}

.page-privacy .hero-meta li {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
}

.page-privacy .hero-meta span {
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--glass-line);
  border-radius: var(--radius-pill);
  color: var(--amber);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
}

.page-privacy .hero-figure {
  position: relative;
  margin: clamp(1.8rem, 4vw, 2.6rem) 0 0;
  border: 1px solid var(--glass-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-800);
  box-shadow: var(--shadow-float);
}

.page-privacy .hero-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(5, 10, 20, 0) 46%, rgba(5, 10, 20, 0.82) 100%),
    radial-gradient(120% 90% at 78% 0%, rgba(43, 240, 210, 0.16), transparent 62%);
}

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

.page-privacy .hero-figure .media-caption {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 0.9rem 1.2rem 1.05rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--text-soft);
  border-top: 1px dashed var(--pv-line);
}

/* ---------- layout ---------- */

.page-privacy .doc-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.6rem;
  padding-top: clamp(2rem, 5vw, 3.5rem);
}

.page-privacy .index-title {
  margin: 0 0 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.16em;
  color: var(--text-soft);
}

.page-privacy .doc-index ol {
  display: flex;
  gap: 0.45rem;
  margin: 0;
  padding: 0 0 0.55rem;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-privacy .doc-index a {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.45rem 0.8rem;
  border: 1px solid var(--glass-line);
  border-radius: var(--radius-pill);
  background: var(--glass-bg);
  color: var(--text-soft);
  font-size: 0.8125rem;
  line-height: 1.3;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-privacy .idx-num {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-privacy .doc-index a:hover,
.page-privacy .doc-index a:focus-visible {
  color: var(--text);
  border-color: var(--cyan);
  background: var(--glass-bg-strong);
}

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

/* :target 高亮当前章节对应的索引项 */
.page-privacy .doc-layout:has(#collect:target) .doc-index a[href="#collect"],
.page-privacy .doc-layout:has(#use:target) .doc-index a[href="#use"],
.page-privacy .doc-layout:has(#local:target) .doc-index a[href="#local"],
.page-privacy .doc-layout:has(#retain:target) .doc-index a[href="#retain"],
.page-privacy .doc-layout:has(#rights:target) .doc-index a[href="#rights"],
.page-privacy .doc-layout:has(#more:target) .doc-index a[href="#more"] {
  color: var(--ink-900);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-privacy .doc-layout:has(#collect:target) .doc-index a[href="#collect"] .idx-num,
.page-privacy .doc-layout:has(#use:target) .doc-index a[href="#use"] .idx-num,
.page-privacy .doc-layout:has(#local:target) .doc-index a[href="#local"] .idx-num,
.page-privacy .doc-layout:has(#retain:target) .doc-index a[href="#retain"] .idx-num,
.page-privacy .doc-layout:has(#rights:target) .doc-index a[href="#rights"] .idx-num,
.page-privacy .doc-layout:has(#more:target) .doc-index a[href="#more"] .idx-num {
  color: var(--ink-900);
}

/* ---------- sections ---------- */

.page-privacy .doc-section {
  padding: clamp(1.6rem, 3.6vw, 2.4rem) 0;
  border-top: 1px solid var(--pv-line);
  scroll-margin-top: 6rem;
}

.page-privacy .doc-section h2 {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.7rem;
  margin: 0 0 1rem;
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-privacy .doc-num {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--cyan);
  padding: 0.2rem 0.5rem;
  border: 1px solid rgba(43, 240, 210, 0.3);
  border-radius: var(--radius-md);
  font-variant-numeric: tabular-nums;
}

.page-privacy .doc-section h3 {
  margin: 0 0 0.35rem;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--amber);
}

.page-privacy .doc-section p {
  margin: 0 0 0.9rem;
  max-width: 62ch;
  font-size: 1.0625rem;
  line-height: 1.85;
  color: var(--text);
}

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

.page-privacy .doc-note {
  padding-left: 1rem;
  border-left: 2px solid var(--pv-line);
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-privacy .doc-section a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 240, 210, 0.45);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-privacy .doc-section a:hover,
.page-privacy .doc-section a:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

/* ---------- tag groups ---------- */

.page-privacy .doc-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.1rem 0 1.2rem;
  padding: 0;
  list-style: none;
}

.page-privacy .doc-tags li {
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--pv-tag-cyan);
  border-radius: var(--radius-pill);
  background: rgba(43, 240, 210, 0.06);
  font-size: 0.8125rem;
  letter-spacing: 0.02em;
  line-height: 1.4;
  color: var(--text);
}

.page-privacy .doc-tags--amber li {
  border-color: var(--pv-tag-amber);
  background: rgba(255, 178, 91, 0.07);
}

.page-privacy .doc-tags--tight {
  gap: 0.4rem;
  margin: 0.8rem 0 0.9rem;
}

.page-privacy .doc-tags--tight li {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
}

/* ---------- list blocks ---------- */

.page-privacy .doc-list {
  margin: 1.2rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1.1rem;
}

.page-privacy .doc-list li {
  position: relative;
  padding: 0.95rem 1.1rem 0.95rem 1.35rem;
  border-radius: var(--radius-md);
  background: linear-gradient(120deg, rgba(168, 196, 224, 0.09), rgba(168, 196, 224, 0.03));
  border-left: 2px solid var(--cyan-deep);
}

.page-privacy .doc-list li:nth-child(2) {
  border-left-color: var(--amber-deep);
}

.page-privacy .doc-list p {
  margin: 0;
  font-size: 0.9688rem;
  line-height: 1.8;
  color: var(--text-soft);
}

/* ---------- storage diagram ---------- */

.page-privacy .storage-diagram {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.9rem;
  margin: 1.3rem 0;
}

.page-privacy .storage-card {
  padding: 1.1rem 1.15rem 1.2rem;
  border: 1px solid rgba(43, 240, 210, 0.26);
  border-radius: var(--radius-md);
  background:
    radial-gradient(120% 100% at 0% 0%, rgba(43, 240, 210, 0.12), transparent 70%),
    var(--ink-800);
}

.page-privacy .storage-card--server {
  border-color: rgba(255, 178, 91, 0.26);
  background:
    radial-gradient(120% 100% at 0% 0%, rgba(255, 178, 91, 0.12), transparent 70%),
    var(--ink-800);
}

.page-privacy .storage-card svg {
  display: block;
  width: 40px;
  height: 40px;
  margin-bottom: 0.7rem;
  color: var(--cyan);
}

.page-privacy .storage-card--server svg {
  color: var(--amber);
}

.page-privacy .storage-card p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--text-soft);
}

/* ---------- details ---------- */

.page-privacy .doc-more {
  margin-top: 1.1rem;
  padding: 0.8rem 0 0.2rem 1rem;
  border-left: 1px dashed var(--pv-line);
}

.page-privacy .doc-more summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.03em;
  color: var(--cyan);
  list-style: none;
}

.page-privacy .doc-more summary::-webkit-details-marker {
  display: none;
}

.page-privacy .doc-more summary::before {
  content: "+";
  display: inline-block;
  width: 1rem;
  margin-right: 0.35rem;
  color: var(--amber);
}

.page-privacy .doc-more[open] summary::before {
  content: "−";
}

.page-privacy .doc-more summary:hover,
.page-privacy .doc-more summary:focus-visible {
  color: var(--amber);
}

.page-privacy .doc-more p {
  margin: 0.8rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--text-soft);
}

/* ---------- desktop ---------- */

@media (min-width: 900px) {
  .page-privacy .doc-layout {
    grid-template-columns: var(--pv-index-width) minmax(0, 1fr);
    gap: clamp(2.5rem, 5vw, 4.5rem);
    align-items: start;
  }

  .page-privacy .doc-index {
    position: sticky;
    top: 6rem;
    padding-right: 1.2rem;
  }

  .page-privacy .doc-index::after {
    content: "";
    position: absolute;
    top: 2.1rem;
    right: 0;
    bottom: 0.4rem;
    width: 1px;
    background: linear-gradient(180deg, var(--pv-line), rgba(22, 38, 60, 0.15));
  }

  .page-privacy .doc-index ol {
    display: grid;
    gap: 0.15rem;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-privacy .doc-index a {
    width: 100%;
    padding: 0.55rem 0.6rem 0.55rem 0;
    border: 0;
    border-radius: 0;
    background: none;
    white-space: normal;
    font-size: 0.875rem;
    line-height: 1.45;
  }

  .page-privacy .doc-index a:hover,
  .page-privacy .doc-index a:focus-visible {
    background: none;
    color: var(--cyan);
    border: 0;
  }

  .page-privacy .doc-layout:has(#collect:target) .doc-index a[href="#collect"],
  .page-privacy .doc-layout:has(#use:target) .doc-index a[href="#use"],
  .page-privacy .doc-layout:has(#local:target) .doc-index a[href="#local"],
  .page-privacy .doc-layout:has(#retain:target) .doc-index a[href="#retain"],
  .page-privacy .doc-layout:has(#rights:target) .doc-index a[href="#rights"],
  .page-privacy .doc-layout:has(#more:target) .doc-index a[href="#more"] {
    background: none;
    color: var(--cyan);
  }

  .page-privacy .doc-layout:has(#collect:target) .doc-index a[href="#collect"] .idx-num,
  .page-privacy .doc-layout:has(#use:target) .doc-index a[href="#use"] .idx-num,
  .page-privacy .doc-layout:has(#local:target) .doc-index a[href="#local"] .idx-num,
  .page-privacy .doc-layout:has(#retain:target) .doc-index a[href="#retain"] .idx-num,
  .page-privacy .doc-layout:has(#rights:target) .doc-index a[href="#rights"] .idx-num,
  .page-privacy .doc-layout:has(#more:target) .doc-index a[href="#more"] .idx-num {
    color: var(--amber);
  }

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

  .page-privacy .doc-section {
    padding: clamp(2rem, 3.2vw, 2.75rem) 0;
  }

  .page-privacy .doc-section--last {
    padding-bottom: 0;
  }
}

@media (min-width: 1180px) {
  .page-privacy .doc-hero h1 {
    max-width: 22ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .doc-index a,
  .page-privacy .doc-section a,
  .page-privacy .breadcrumbs a {
    transition: none;
  }
}