.page-privacy {
  --privacy-rail-w: 216px;
  --privacy-measure: 68ch;
  padding-bottom: clamp(56px, 9vw, 112px);
  background: var(--yh-cream);
}

/* ---------- 首屏 ---------- */
.page-privacy .privacy-hero {
  background-color: var(--yh-mist);
  background-image:
    repeating-linear-gradient(180deg, rgba(27, 58, 107, .045) 0 1px, transparent 1px 30px),
    var(--grad-river);
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
  padding: clamp(26px, 5vw, 60px) 0 clamp(30px, 5vw, 62px);
}

.page-privacy .privacy-hero-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-privacy h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6.4vw, 66px);
  line-height: 1.12;
  letter-spacing: .06em;
  color: var(--yh-blue);
  margin: .3em 0 .5em;
  max-width: 16ch;
}

.page-privacy .privacy-hero .lede {
  max-width: 60ch;
  color: var(--yh-ink);
  font-size: clamp(16px, 1.6vw, 17.5px);
  line-height: 1.8;
  margin: 0 0 22px;
}

.page-privacy .privacy-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
}

/* ---------- 通栏纹理 ---------- */
.page-privacy .privacy-band {
  margin: clamp(22px, 4vw, 40px) 0 0;
}

.page-privacy .privacy-band img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
  background: var(--grad-river);
}

.page-privacy .privacy-band figcaption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: .04em;
  color: var(--yh-gauge);
  max-width: 64ch;
}

/* ---------- 主体两栏 ---------- */
.page-privacy .privacy-layout {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  margin-top: clamp(32px, 5vw, 64px);
}

.page-privacy .privacy-layout > * {
  min-width: 0;
}

/* ---------- 章节刻度 ---------- */
.page-privacy .privacy-rail {
  position: relative;
}

.page-privacy .privacy-rail-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--yh-gauge);
}

.page-privacy .privacy-rail-list {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
}

.page-privacy .privacy-rail-list li {
  flex: 0 0 auto;
  scroll-snap-align: start;
}

.page-privacy .privacy-rail-list a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 15px;
  border-radius: var(--pill);
  background: var(--yh-sand);
  color: var(--yh-blue);
  font-size: 14px;
  line-height: 1.4;
  white-space: nowrap;
  text-decoration: none;
  border: 1px solid transparent;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-privacy .privacy-rail-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--yh-gauge);
}

.page-privacy .privacy-rail-list a:hover,
.page-privacy .privacy-rail-list a:focus-visible {
  background: var(--yh-mist);
  border-color: var(--yh-copper);
  color: var(--yh-copper-deep);
  transform: translateY(-1px);
}

/* ---------- 正文章节 ---------- */
.page-privacy .privacy-body > .chapter {
  margin-top: clamp(30px, 4.4vw, 52px);
  padding-top: clamp(26px, 4vw, 46px);
  border-top: 1px solid var(--yh-sand);
}

.page-privacy .privacy-body > .chapter:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}

.page-privacy .chapter-sum {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  letter-spacing: .06em;
  color: var(--yh-celadon);
}

.page-privacy .chapter-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 3vw, 33px);
  line-height: 1.32;
  letter-spacing: .06em;
  color: var(--yh-blue);
  margin: 0 0 18px;
}

.page-privacy .chapter-body {
  max-width: var(--privacy-measure);
}

.page-privacy .chapter-body p {
  margin: 0 0 16px;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--yh-ink);
}

.page-privacy .chapter-body ul {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 13px;
}

.page-privacy .chapter-body li {
  position: relative;
  padding-left: 21px;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--yh-ink);
}

.page-privacy .chapter-body li::before {
  content: "";
  position: absolute;
  left: 3px;
  top: .82em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--yh-silver);
}

.page-privacy .chapter-body strong {
  color: var(--yh-blue);
  font-weight: 700;
}

.page-privacy .privacy-mono {
  font-family: var(--font-mono);
  font-size: .96em;
  letter-spacing: .02em;
  color: var(--yh-celadon);
  padding-bottom: 2px;
  border-bottom: 1px solid rgba(62, 124, 107, .35);
  word-break: break-all;
}

/* ---------- 参数表 ---------- */
.page-privacy .data-table-wrap {
  margin: 6px 0 22px;
  border-radius: var(--radius-md);
}

.page-privacy .data-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 15px;
}

.page-privacy .data-table th,
.page-privacy .data-table td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  line-height: 1.65;
}

.page-privacy .data-table thead th {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--yh-celadon);
}

.page-privacy .data-table tbody th {
  font-weight: 600;
  color: var(--yh-ink);
}

.page-privacy .data-table td {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--yh-ink-soft);
}

/* ---------- 相关入口 ---------- */
.page-privacy .privacy-links {
  display: grid;
  gap: 12px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  max-width: var(--privacy-measure);
}

.page-privacy .privacy-links li {
  padding-left: 0;
}

.page-privacy .privacy-links li::before {
  display: none;
}

.page-privacy .privacy-links a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, #FFFFFF 0%, var(--yh-mist) 100%);
  border: 1px solid var(--yh-silver);
  text-decoration: none;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-privacy .privacy-links a:hover,
.page-privacy .privacy-links a:focus-visible {
  transform: translateY(-2px);
  border-color: var(--yh-copper);
  box-shadow: var(--shadow-1);
}

.page-privacy .privacy-link-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--yh-gauge);
}

.page-privacy .privacy-links strong {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: .05em;
  color: var(--yh-blue);
}

.page-privacy .privacy-link-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--yh-ink-soft);
}

/* ---------- 脚注 ---------- */
.page-privacy .privacy-footnote {
  margin-top: clamp(38px, 6vw, 72px);
  padding-top: 20px;
  border-top: 1px solid var(--yh-silver);
  max-width: var(--privacy-measure);
}

.page-privacy .privacy-footnote p {
  margin: 0 0 8px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--yh-gauge);
}

/* ---------- 返回顶部 ---------- */
.page-privacy .back-top {
  position: fixed;
  right: clamp(16px, 3vw, 34px);
  bottom: 84px;
  z-index: 30;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 17px;
  border-radius: var(--pill);
  background: var(--yh-blue);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  text-decoration: none;
  box-shadow: var(--shadow-2);
  transition: background var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-privacy .back-top:hover,
.page-privacy .back-top:focus-visible {
  background: var(--yh-copper-deep);
  transform: translateY(-2px);
}

@supports (animation-timeline: scroll()) {
  .page-privacy .back-top {
    opacity: 0;
    animation: privacy-backtop-in linear both;
    animation-timeline: scroll(root block);
    animation-range: 0 100vh;
  }
}

@keyframes privacy-backtop-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-privacy .privacy-links {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
  }

  .page-privacy .back-top {
    bottom: clamp(20px, 3vw, 34px);
  }
}

@media (min-width: 1024px) {
  .page-privacy .privacy-layout {
    grid-template-columns: var(--privacy-rail-w) minmax(0, 1fr);
    gap: clamp(34px, 5vw, 84px);
    align-items: start;
  }

  .page-privacy .privacy-rail {
    position: sticky;
    top: calc(var(--header-h-condensed) + 30px);
    align-self: start;
  }

  .page-privacy .privacy-rail-title {
    margin-bottom: 14px;
  }

  .page-privacy .privacy-rail-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 4px 0 4px 24px;
    position: relative;
    scroll-snap-type: none;
  }

  .page-privacy .privacy-rail-list::before {
    content: "";
    position: absolute;
    left: 6px;
    top: 14px;
    bottom: 14px;
    width: 1px;
    background: linear-gradient(180deg, var(--yh-silver) 0%, var(--yh-sand) 100%);
  }

  .page-privacy .privacy-rail-list li {
    flex: none;
  }

  .page-privacy .privacy-rail-list a {
    position: relative;
    display: flex;
    padding: 8px 0;
    border: 0;
    border-radius: 0;
    background: transparent;
    color: var(--yh-ink-soft);
    font-size: 14.5px;
    letter-spacing: .02em;
    white-space: normal;
    transform: none;
  }

  .page-privacy .privacy-rail-list a::before {
    content: "";
    position: absolute;
    left: -22px;
    top: 14px;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--yh-silver);
    transition: background var(--dur) var(--ease), transform var(--dur) var(--ease);
  }

  .page-privacy .privacy-rail-list a:hover,
  .page-privacy .privacy-rail-list a:focus-visible {
    background: transparent;
    color: var(--yh-copper-deep);
    border-color: transparent;
    transform: none;
  }

  .page-privacy .privacy-rail-list a:hover::before,
  .page-privacy .privacy-rail-list a:focus-visible::before {
    background: var(--yh-copper);
    transform: scale(1.25);
  }

  .page-privacy .privacy-rail-num {
    min-width: 22px;
  }
}

@media (min-width: 1280px) {
  .page-privacy {
    --privacy-rail-w: 240px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .privacy-band img,
  .page-privacy .back-top,
  .page-privacy .privacy-links a,
  .page-privacy .privacy-rail-list a {
    transition: none;
  }

  .page-privacy .privacy-links a:hover,
  .page-privacy .privacy-links a:focus-visible,
  .page-privacy .back-top:hover,
  .page-privacy .back-top:focus-visible {
    transform: none;
  }

  @supports (animation-timeline: scroll()) {
    .page-privacy .back-top {
      animation: none;
      opacity: 1;
    }
  }
}