/* ================= 隐私政策页 ================= */
.page-privacy {
  --pp-measure: 72ch;
  --pp-rule: 1px solid var(--line);
  background: var(--sand);
  color: var(--text);
}

/* ---------- 顶部氛围 ---------- */
.page-privacy .pp-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  padding: clamp(26px, 5vw, 56px) 0 clamp(32px, 5vw, 68px);
}

.page-privacy .pp-hero__media {
  position: absolute;
  inset: 0;
}

.page-privacy .pp-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 42%;
  opacity: .18;
}

.page-privacy .pp-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(15, 26, 20, .66) 0%, rgba(15, 26, 20, .88) 62%, var(--ink) 100%);
}

.page-privacy .pp-hero__inner {
  position: relative;
  z-index: 1;
}

.page-privacy .yt-breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--stone);
  margin-bottom: clamp(18px, 4vw, 42px);
}

.page-privacy .yt-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-privacy .yt-breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--stone);
}

.page-privacy .yt-breadcrumb a {
  color: var(--moss);
  text-decoration: none;
}

.page-privacy .yt-breadcrumb a:hover {
  text-decoration: underline;
}

.page-privacy .yt-eyebrow {
  display: inline-block;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ref);
}

.page-privacy .pp-title {
  max-width: 22ch;
  margin: 0 0 clamp(14px, 2.6vw, 24px);
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(32px, 7.6vw, 76px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--paper);
  text-wrap: balance;
}

.page-privacy .yt-lead {
  max-width: 60ch;
  margin: 0 0 18px;
  font-size: clamp(16px, 1.6vw, 18px);
  line-height: 1.78;
  color: #CFC9BC;
}

.page-privacy .pp-meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--stone);
}

/* ---------- 主体 ---------- */
.page-privacy .pp-body {
  background: var(--sand);
  padding: clamp(30px, 5vw, 72px) 0 clamp(48px, 8vw, 104px);
}

.page-privacy .pp-layout {
  align-items: start;
}

.page-privacy .pp-doc {
  min-width: 0;
  max-width: var(--pp-measure);
}

/* ---------- 锚点目录 ---------- */
.page-privacy .pp-toc {
  margin-bottom: clamp(22px, 4vw, 36px);
}

.page-privacy .pp-toc .yt-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--stone);
}

.page-privacy .pp-toc .yt-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 4px 0 10px;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.page-privacy .pp-toc .yt-rail__list::-webkit-scrollbar {
  display: none;
}

.page-privacy .pp-toc .yt-rail__item {
  flex: 0 0 auto;
  scroll-snap-align: start;
}

.page-privacy .pp-toc .yt-rail__item a {
  display: block;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper);
  color: var(--text-soft);
  font-family: var(--font-mono);
  font-size: 12.5px;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color .18s var(--ease), background .18s var(--ease), color .18s var(--ease);
}

.page-privacy .pp-toc .yt-rail__item.is-active a,
.page-privacy .pp-toc .yt-rail__item a.is-active {
  border-color: var(--grass);
  background: var(--grass);
  color: var(--paper);
}

/* ---------- 折叠章节 ---------- */
.page-privacy .pp-fold {
  border-top: var(--pp-rule);
  scroll-margin-top: clamp(96px, 14vw, 128px);
}

.page-privacy .pp-fold:last-of-type {
  border-bottom: var(--pp-rule);
}

.page-privacy .pp-fold__sum {
  display: flex;
  align-items: baseline;
  gap: clamp(10px, 2vw, 18px);
  padding: clamp(20px, 3.4vw, 32px) 0;
  cursor: pointer;
  list-style: none;
}

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

.page-privacy .pp-fold__sum::marker {
  content: "";
}

.page-privacy .pp-fold__no {
  flex: 0 0 auto;
  padding-top: .4em;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .1em;
  color: var(--moss);
}

.page-privacy .pp-fold__h {
  flex: 1 1 auto;
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(19px, 3.2vw, 30px);
  line-height: 1.22;
  letter-spacing: -.01em;
  color: var(--text);
  transition: color .18s var(--ease);
}

.page-privacy .pp-fold__sum:hover .pp-fold__h {
  color: var(--grass);
}

.page-privacy .pp-fold__sign {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--grass);
}

.page-privacy .pp-fold__sign::before {
  content: "+";
}

.page-privacy .pp-fold[open] .pp-fold__sign::before {
  content: "\2013";
}

.page-privacy .pp-fold__body {
  padding: 0 0 clamp(24px, 4vw, 40px);
  overflow-wrap: break-word;
}

.page-privacy .pp-fold__body p {
  max-width: 68ch;
  margin: 0 0 1em;
  font-size: clamp(16px, 1.1vw, 17.5px);
  line-height: 1.8;
  color: var(--text);
}

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

.page-privacy .pp-fold__body a {
  color: var(--grass);
  text-decoration: underline;
  text-underline-offset: .18em;
}

.page-privacy .pp-list {
  display: grid;
  gap: 12px;
  margin: 0 0 1.15em;
  padding: 0;
  list-style: none;
}

.page-privacy .pp-list li {
  position: relative;
  padding-left: 22px;
  font-size: clamp(16px, 1.1vw, 17.5px);
  line-height: 1.78;
  color: var(--text);
}

.page-privacy .pp-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .74em;
  width: 8px;
  height: 2px;
  background: var(--moss);
}

.page-privacy .pp-list strong {
  font-weight: 700;
  color: var(--ink-2);
}

/* ---------- 收尾 ---------- */
.page-privacy .pp-updated {
  margin: clamp(24px, 4vw, 34px) 0 0;
  padding-top: 16px;
  border-top: var(--pp-rule);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--stone);
}

.page-privacy .pp-after {
  margin-top: clamp(26px, 4vw, 42px);
  padding: clamp(20px, 3.4vw, 34px);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-privacy .pp-after .yt-h3 {
  margin: 0 0 10px;
}

.page-privacy .pp-after p {
  max-width: 58ch;
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-privacy .pp-after .yt-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-privacy .pp-toc {
    position: sticky;
    top: 112px;
    align-self: start;
    margin-bottom: 0;
  }

  .page-privacy .pp-toc .yt-rail__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-privacy .pp-toc .yt-rail__item {
    margin-bottom: 2px;
  }

  .page-privacy .pp-toc .yt-rail__item a {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: transparent;
    padding: 8px 10px 8px 14px;
    white-space: normal;
    line-height: 1.5;
    font-size: 13px;
  }

  .page-privacy .pp-toc .yt-rail__item.is-active a,
  .page-privacy .pp-toc .yt-rail__item a.is-active {
    border-left-color: var(--grass);
    background: rgba(46, 107, 63, .08);
    color: var(--ink);
  }

  .page-privacy .pp-toc .yt-rail__item a:hover {
    border-left-color: var(--moss);
    color: var(--ink);
  }

  .page-privacy .pp-hero {
    padding-top: clamp(40px, 4vw, 68px);
  }

  .page-privacy .pp-fold__body {
    padding-left: 34px;
  }
}

@media (min-width: 1280px) {
  .page-privacy .pp-toc .yt-rail__item a {
    font-size: 13.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .pp-fold__h,
  .page-privacy .pp-toc .yt-rail__item a {
    transition: none;
  }
}