.page-privacy {
  --pp-side-width: 280px;
  --pp-gap: 3rem;
  background: var(--c-paper);
  color: var(--c-graphite);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.75;
}

/* ===== Hero ===== */
.page-privacy .pp-hero {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(0, 168, 255, 0.08) 0%, transparent 45%),
    linear-gradient(160deg, var(--c-deep-space) 0%, var(--c-shadow) 78%);
  color: var(--c-paper);
  padding: var(--space-5) var(--space-3) var(--space-5);
}

.page-privacy .pp-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(57, 255, 136, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 255, 136, 0.07) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.page-privacy .pp-hero::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -40px;
  width: 280px;
  height: 220px;
  background: linear-gradient(135deg, transparent 42%, rgba(57, 255, 136, 0.45) 42.5%, transparent 43%, transparent 56%, rgba(192, 200, 208, 0.28) 56.5%, transparent 57%);
  transform: rotate(10deg);
  pointer-events: none;
}

.page-privacy .pp-hero-inner {
  position: relative;
  z-index: 1;
  padding-top: var(--space-1);
}

.page-privacy .pp-breadcrumb a {
  color: rgba(247, 249, 251, 0.7);
  text-decoration: none;
}

.page-privacy .pp-breadcrumb a:hover {
  color: var(--c-fluo);
}

.page-privacy .pp-kicker {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(247, 249, 251, 0.62);
  margin-top: var(--space-4);
}

.page-privacy .pp-kicker::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--c-fluo);
}

.page-privacy .pp-hero h1 {
  color: var(--c-paper);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 5vw, 3.4rem);
  line-height: 1.16;
  letter-spacing: -0.02em;
  margin: var(--space-3) 0 var(--space-2);
}

.page-privacy .pp-lead {
  max-width: 62ch;
  color: rgba(247, 249, 251, 0.78);
  font-size: 1rem;
  margin: 0;
}

.page-privacy .pp-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.page-privacy .pp-meta-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--c-fluo);
  border: 1px solid rgba(57, 255, 136, 0.35);
  padding: var(--space-1) var(--space-3);
}

.page-privacy .pp-meta-chip::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--c-fluo);
  border-radius: 50%;
}

/* ===== 正文区 ===== */
.page-privacy .pp-body {
  padding: var(--space-5) var(--space-3) var(--space-6);
}

.page-privacy .pp-layout {
  display: block;
}

/* ===== 侧边目录 ===== */
.page-privacy .pp-side {
  margin-bottom: var(--space-5);
}

.page-privacy .pp-side-inner {
  background: var(--c-paper);
  border: 1px solid var(--c-silver);
  padding: var(--space-4);
}

.page-privacy .pp-aside-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-muted);
  margin: 0 0 var(--space-2);
}

.page-privacy .pp-toc ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-privacy .pp-toc li {
  border-top: 1px solid rgba(192, 200, 208, 0.45);
}

.page-privacy .pp-toc a {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  color: var(--c-deep-space);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: background var(--ease-fast);
}

.page-privacy .pp-toc a::after {
  content: "";
  width: 6px;
  height: 6px;
  border-top: 1px solid var(--c-fluo);
  border-right: 1px solid var(--c-fluo);
  margin-left: auto;
  transform: rotate(45deg);
}

.page-privacy .pp-toc a:hover,
.page-privacy .pp-toc a:focus-visible {
  background: rgba(57, 255, 136, 0.1);
  color: var(--c-deep-space);
  outline: none;
}

.page-privacy .pp-toc-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-muted);
}

.page-privacy .pp-side-links {
  border-top: 1px solid var(--c-silver);
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  display: grid;
  gap: var(--space-2);
}

.page-privacy .pp-side-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  color: var(--c-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 400;
}

.page-privacy .pp-side-link::before {
  content: "/";
  color: var(--c-fluo);
  font-family: var(--font-mono);
  font-weight: 700;
}

.page-privacy .pp-side-link:hover {
  color: var(--c-deep-space);
}

/* ===== 章节 ===== */
.page-privacy .pp-main {
  min-width: 0;
}

.page-privacy .pp-section {
  padding: var(--space-5) 0;
  border-top: 1px solid var(--c-silver);
}

.page-privacy .pp-section:first-child {
  border-top: 0;
}

.page-privacy .pp-section-head {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.page-privacy .pp-section-head::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--c-silver), transparent);
  margin-left: auto;
}

.page-privacy .pp-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 52px;
  height: 52px;
  padding: 0 var(--space-2);
  background: var(--c-deep-space);
  color: var(--c-paper);
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 500;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}

.page-privacy .pp-section-head h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.4rem, 3vw, 2rem);
  color: var(--c-deep-space);
  margin: 0;
}

.page-privacy .pp-chapter p {
  max-width: 72ch;
  margin: 0 0 var(--space-3);
}

.page-privacy .pp-chapter h3 {
  display: flex;
  align-items: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--c-deep-space);
  margin: var(--space-4) 0 var(--space-2);
}

.page-privacy .pp-chapter h3::before {
  content: "";
  width: 12px;
  height: 12px;
  flex: none;
  background: var(--c-fluo);
  clip-path: polygon(0 0, 100% 0, 0 100%);
  margin-right: var(--space-2);
}

.page-privacy .pp-chapter ul {
  list-style: none;
  padding-left: 0;
  margin: 0 0 var(--space-3);
}

.page-privacy .pp-chapter li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: var(--space-2);
}

.page-privacy .pp-chapter li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 12px;
  height: 2px;
  background: linear-gradient(90deg, var(--c-fluo), var(--c-silver));
}

.page-privacy .pp-chapter strong {
  font-weight: 700;
  color: var(--c-deep-space);
  font-family: var(--font-mono);
  font-size: 0.95em;
}

.page-privacy .pp-chapter a {
  color: var(--c-data);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 168, 255, 0.4);
  font-weight: 500;
}

.page-privacy .pp-chapter a:hover {
  color: var(--c-deep-space);
  border-bottom-color: var(--c-fluo);
}

/* ===== 图片 ===== */
.page-privacy .pp-figure {
  margin: var(--space-5) 0;
  border: 1px solid var(--c-silver);
  background: var(--c-paper);
}

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

.page-privacy .pp-figure figcaption {
  padding: var(--space-2) var(--space-3);
  font-size: 0.82rem;
  color: var(--c-muted);
  border-top: 1px solid var(--c-silver);
}

/* ===== 可展开说明 ===== */
.page-privacy .pp-detail {
  border: 1px solid var(--c-silver);
  background: var(--c-paper);
  margin: var(--space-4) 0;
}

.page-privacy .pp-detail summary {
  cursor: pointer;
  padding: var(--space-3);
  font-weight: 500;
  color: var(--c-deep-space);
  list-style: none;
}

.page-privacy .pp-detail summary::-webkit-details-marker {
  display: none;
}

.page-privacy .pp-detail summary::before {
  content: "+";
  font-family: var(--font-mono);
  color: var(--c-fluo);
  font-weight: 700;
  margin-right: var(--space-2);
}

.page-privacy .pp-detail[open] summary::before {
  content: "–";
}

.page-privacy .pp-detail ol {
  padding: 0 var(--space-4) var(--space-3) var(--space-5);
  margin: 0;
}

.page-privacy .pp-detail li {
  margin-bottom: var(--space-1);
}

/* ===== 底部联系 ===== */
.page-privacy .pp-contact-line {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-5);
  padding: var(--space-4) var(--space-5);
  background: linear-gradient(135deg, var(--c-deep-space), var(--c-shadow));
  color: var(--c-paper);
}

.page-privacy .pp-contact-line p {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
}

/* ===== 桌面端 ===== */
@media (min-width: 900px) {
  .page-privacy .pp-hero {
    padding-top: var(--space-6);
  }

  .page-privacy .pp-layout {
    display: grid;
    grid-template-columns: var(--pp-side-width) minmax(0, 1fr);
    gap: var(--pp-gap);
    align-items: start;
  }

  .page-privacy .pp-side {
    position: sticky;
    top: calc(var(--space-4) + 80px);
    margin-bottom: 0;
  }

  .page-privacy .pp-main {
    max-width: 900px;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .page-privacy {
    scroll-behavior: smooth;
  }
}