.page-privacy {
  --pv-ink: #1A1A28;
  --pv-line: rgba(11, 11, 20, .16);
  --pv-line-soft: rgba(11, 11, 20, .08);
  --pv-gap: clamp(26px, 5vw, 50px);
  background: var(--ink);
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.pv-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 5vw, 46px) 0 clamp(34px, 6vw, 66px);
  background:
    radial-gradient(110% 80% at 84% 4%, rgba(108, 43, 217, .45), rgba(11, 11, 20, 0) 60%),
    radial-gradient(60% 50% at 2% 98%, rgba(198, 255, 61, .16), rgba(11, 11, 20, 0) 62%),
    var(--ink);
}

.pv-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(166, 107, 255, .10) 1px, transparent 1px),
    linear-gradient(90deg, rgba(166, 107, 255, .10) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 78%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 78%);
}

.pv-hero__inner {
  position: relative;
  z-index: 1;
}

.pv-hero .breadcrumbs {
  margin-bottom: 18px;
}

.pv-hero__title {
  margin: 14px 0 0;
  max-width: 16em;
  font-family: var(--font-head);
  font-size: clamp(29px, 7.2vw, 60px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.02em;
}

.pv-hero__lead {
  margin-top: 18px;
  max-width: 660px;
  font-size: clamp(15px, 1.9vw, 17px);
  line-height: 1.85;
  color: rgba(242, 236, 225, .8);
}

.pv-hero__meta {
  margin-top: 22px;
}

.pv-hero__media {
  margin-top: clamp(24px, 4vw, 38px);
  aspect-ratio: auto;
  border: 1px solid rgba(166, 107, 255, .34);
  box-shadow: var(--shadow-deep);
}

.pv-hero__media .media__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 纸白正文层 ---------- */
.pv-body {
  background: var(--paper);
  color: var(--pv-ink);
}

.pv-layout {
  display: grid;
  grid-template-areas:
    "toc"
    "doc";
  gap: 24px;
  padding: var(--pv-gap) 0 clamp(46px, 8vw, 82px);
}

.pv-doc {
  grid-area: doc;
  min-width: 0;
}

/* ---------- 目录 ---------- */
.pv-toc {
  grid-area: toc;
  min-width: 0;
}

.pv-toc__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: rgba(11, 11, 20, .5);
}

.pv-toc__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.pv-toc__list li {
  flex: 0 0 auto;
}

.pv-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 7px;
  padding: 7px 11px;
  border: 1px solid var(--pv-line-soft);
  border-radius: var(--r-sm);
  font-size: 13px;
  color: rgba(11, 11, 20, .72);
  text-decoration: none;
  white-space: nowrap;
  transition: background .2s ease, border-color .2s ease, color .2s ease;
}

.pv-toc__list a span {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--violet);
}

.pv-toc__list a:hover,
.pv-toc__list a[aria-current] {
  background: rgba(108, 43, 217, .1);
  border-color: rgba(108, 43, 217, .32);
  color: var(--pv-ink);
}

/* ---------- 章节 ---------- */
.pv-chapter {
  scroll-margin-top: 130px;
}

.pv-chapter + .pv-chapter {
  margin-top: clamp(34px, 6vw, 58px);
}

.pv-chapter__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding-top: 16px;
  border-top: 2px solid var(--pv-ink);
}

.pv-chapter__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 700;
  line-height: .92;
  letter-spacing: -.05em;
  color: var(--violet);
}

.pv-chapter__titles {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  min-width: 0;
}

.pv-chapter__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(21px, 3.4vw, 29px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -.01em;
}

.page-privacy .copy-btn {
  padding: 3px 9px;
  border: 1px solid var(--pv-line);
  border-radius: 999px;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: rgba(11, 11, 20, .58);
  cursor: pointer;
  transition: color .2s ease, border-color .2s ease;
}

.page-privacy .copy-btn:hover {
  color: var(--violet);
  border-color: rgba(108, 43, 217, .45);
}

.pv-chapter__body {
  margin-top: 16px;
  max-width: 720px;
  font-size: 16.5px;
  line-height: 1.82;
}

.pv-chapter__body > * + * {
  margin-top: 14px;
}

.pv-chapter__body h3 {
  margin-top: 26px;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: .04em;
  color: var(--violet);
}

.pv-chapter__body a {
  color: var(--violet);
  text-decoration: none;
  border-bottom: 1px solid rgba(108, 43, 217, .38);
}

.pv-chapter__body a:hover {
  border-bottom-color: var(--violet);
}

.pv-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.pv-list li {
  position: relative;
  padding-left: 21px;
}

.pv-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 11px;
  height: 3px;
  border-radius: 2px;
  background: var(--grad-neon);
}

.pv-list strong {
  font-weight: 800;
}

.pv-note {
  padding: 14px 18px;
  border-left: 3px solid var(--violet);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(108, 43, 217, .06);
  font-size: 15px;
  line-height: 1.75;
  color: rgba(11, 11, 20, .78);
}

/* ---------- 流向示意 ---------- */
.pv-flow {
  margin-top: 26px;
}

.pv-flow__scroll {
  overflow-x: auto;
  padding-bottom: 8px;
}

.pv-flow svg {
  display: block;
  width: 100%;
  min-width: 620px;
  height: auto;
}

.pv-flow__cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(11, 11, 20, .55);
}

/* ---------- 收尾 ---------- */
.pv-end {
  padding: clamp(34px, 6vw, 62px) 0;
  background:
    radial-gradient(80% 90% at 92% 0%, rgba(108, 43, 217, .38), rgba(11, 11, 20, 0) 62%),
    var(--ink);
}

.pv-end__inner {
  display: grid;
  gap: 18px;
  justify-items: start;
}

.pv-end h2 {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(22px, 3.6vw, 32px);
  font-weight: 800;
  letter-spacing: -.01em;
}

.pv-end p {
  max-width: 620px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(242, 236, 225, .78);
}

.pv-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.pv-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin-top: 4px;
}

.pv-links a {
  font-size: 14px;
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(198, 255, 61, .4);
  transition: border-color .2s ease;
}

.pv-links a:hover {
  border-bottom-color: var(--lime);
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 900px) {
  .pv-layout {
    grid-template-areas: "doc toc";
    grid-template-columns: minmax(0, 1fr) 212px;
    gap: clamp(32px, 5vw, 58px);
  }

  .pv-doc {
    max-width: 760px;
  }

  .pv-toc {
    position: sticky;
    top: 132px;
    align-self: start;
  }

  .pv-toc__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .pv-toc__list a {
    border-color: transparent;
    white-space: normal;
  }

  .pv-chapter__body {
    font-size: 17px;
  }
}

@media (min-width: 1100px) {
  .pv-hero__media {
    margin-top: 42px;
  }
}
</main>