.page-privacy {
  --pr-body: #B9C6D9;
  --pr-paper-line: #CFC7B6;
  --pr-paper-ink: #22303F;
  --pr-paper-key: #6B5C48;
  padding-bottom: clamp(48px, 7vw, 96px);
}

/* ---------- 面包屑与首屏 ---------- */
.page-privacy .crumb {
  margin-top: clamp(18px, 2.6vw, 30px);
}

.page-privacy .policy-hero {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  padding: clamp(20px, 3vw, 34px) 0 clamp(26px, 4vw, 44px);
  border-bottom: 1px solid var(--line);
}

.page-privacy .hero-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-privacy h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(30px, 5.6vw, 52px);
  line-height: 1.1;
  color: var(--ink);
  max-width: 20ch;
}

.page-privacy .hero-lede {
  margin: 0;
  max-width: 62ch;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--pr-body);
}

.page-privacy .hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-privacy .hero-meta li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-privacy .hero-meta li::before {
  content: "";
  width: 6px;
  height: 6px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-privacy .hero-figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  aspect-ratio: 1200 / 440;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-privacy .hero-figure img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ---------- 主体：正文 + 粘性条款索引 ---------- */
.page-privacy .policy-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
  padding-top: clamp(24px, 4vw, 46px);
}

.page-privacy .policy-rail {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(36, 26, 70, 0.62), rgba(14, 23, 48, 0.55));
  padding: 14px 16px 12px;
}

.page-privacy .rail-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-privacy .rail-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 2px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-privacy .rail-list li {
  flex: 0 0 auto;
}

.page-privacy .rail-list a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 13.5px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.page-privacy .rail-list a:hover,
.page-privacy .rail-list a:focus-visible {
  color: var(--ink);
  border-color: var(--pulse);
  background: rgba(155, 108, 255, 0.1);
}

.page-privacy .rail-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

/* ---------- 条款块 ---------- */
.page-privacy .clause {
  border-top: 1px solid var(--line);
  scroll-margin-top: 112px;
}

.page-privacy .clause-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  padding: 22px 4px 14px;
  cursor: pointer;
  list-style: none;
  border-bottom: 1px solid var(--line-soft);
  transition: background-color 0.18s ease, border-color 0.18s ease;
}

.page-privacy .clause-head::-webkit-details-marker {
  display: none;
}

.page-privacy .clause-head::marker {
  content: "";
}

.page-privacy .clause-head:hover {
  background: rgba(36, 224, 210, 0.04);
}

.page-privacy .clause-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  padding-top: 4px;
}

.page-privacy .clause-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.01em;
  font-size: clamp(19px, 2.5vw, 25px);
  line-height: 1.26;
  color: var(--ink);
}

.page-privacy .clause-chev {
  align-self: center;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.page-privacy .clause[open] .clause-chev {
  transform: rotate(225deg) translate(-2px, -2px);
  border-color: var(--cyan);
}

.page-privacy .clause:target .clause-head {
  background: rgba(36, 224, 210, 0.07);
  border-bottom-color: var(--cyan);
}

.page-privacy .clause-body {
  max-width: 68ch;
  padding: 16px 4px 26px;
}

.page-privacy .clause-body p {
  margin: 0 0 14px;
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--pr-body);
}

.page-privacy .clause-body p:last-child {
  margin-bottom: 0;
}

/* ---------- 纸张叠层卡片 ---------- */
.page-privacy .paper-card {
  max-width: 68ch;
  margin: 22px 0 20px;
  padding: 18px 20px 20px;
  background: var(--paper);
  color: var(--pr-paper-ink);
  border: 1px solid var(--pr-paper-line);
  box-shadow: 5px 5px 0 -1px rgba(242, 237, 226, 0.3), 10px 10px 0 -2px rgba(242, 237, 226, 0.14);
}

.page-privacy .paper-card--alt {
  margin-left: clamp(0px, 3vw, 28px);
}

.page-privacy .paper-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 16px;
  letter-spacing: 0.02em;
  color: #0B1220;
}

.page-privacy .paper-title span {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--pr-paper-key);
}

.page-privacy .paper-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-privacy .paper-list li {
  display: grid;
  grid-template-columns: minmax(88px, 118px) minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  font-size: 14px;
  line-height: 1.62;
}

.page-privacy .paper-key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--pr-paper-key);
}

/* ---------- 末段入口 ---------- */
.page-privacy .closing {
  margin-top: clamp(34px, 5vw, 60px);
  padding-top: clamp(22px, 3vw, 32px);
  border-top: 1px solid var(--line);
}

.page-privacy .closing-title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-privacy .closing-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-privacy .closing-card {
  display: block;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(36, 26, 70, 0.5), rgba(14, 23, 48, 0.32));
  text-decoration: none;
  transition: border-color 0.18s ease, transform 0.18s ease, background-color 0.18s ease;
}

.page-privacy .closing-card strong {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  letter-spacing: 0.01em;
  color: var(--ink);
}

.page-privacy .closing-card span {
  display: block;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
}

.page-privacy .closing-card:hover,
.page-privacy .closing-card:focus-visible {
  border-color: var(--pulse);
  border-left-color: var(--pulse);
  transform: translateY(-2px);
}

/* ---------- 窄屏微调 ---------- */
@media (max-width: 520px) {
  .page-privacy .rail-list a {
    font-size: 13px;
    padding: 6px 10px;
  }

  .page-privacy .paper-card {
    padding: 16px 14px 18px;
    box-shadow: 4px 4px 0 -1px rgba(242, 237, 226, 0.28), 8px 8px 0 -2px rgba(242, 237, 226, 0.12);
  }

  .page-privacy .paper-card--alt {
    margin-left: 0;
  }

  .page-privacy .paper-list li {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
  }

  .page-privacy .clause-head {
    gap: 10px;
    padding: 18px 2px 12px;
  }

  .page-privacy .clause-body {
    padding: 14px 2px 22px;
  }
}

/* ---------- 宽屏：右栏粘性条款索引 ---------- */
@media (min-width: 960px) {
  .page-privacy .policy-shell {
    grid-template-columns: minmax(0, 1fr) 288px;
    align-items: start;
  }

  .page-privacy .policy-body {
    order: 1;
    min-width: 0;
  }

  .page-privacy .policy-rail {
    order: 2;
    position: sticky;
    top: 104px;
    padding: 18px 14px 16px;
  }

  .page-privacy .rail-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-privacy .rail-list li {
    flex: 0 0 auto;
  }

  .page-privacy .rail-list a {
    display: flex;
    padding: 9px 10px 9px 12px;
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
    background: transparent;
    white-space: normal;
    line-height: 1.45;
  }

  .page-privacy .rail-list a:hover,
  .page-privacy .rail-list a:focus-visible {
    border-left-color: var(--pulse);
    background: rgba(155, 108, 255, 0.08);
  }

  .page-privacy .closing-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 无障碍动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-privacy .clause-chev,
  .page-privacy .closing-card,
  .page-privacy .rail-list a {
    transition: none;
  }

  .page-privacy .closing-card:hover {
    transform: none;
  }
}

/* ---------- 打印：只留条款正文 ---------- */
@media print {
  .page-privacy {
    padding-bottom: 0;
  }

  .page-privacy .policy-rail,
  .page-privacy .closing,
  .page-privacy .hero-figure {
    display: none !important;
  }

  .page-privacy .policy-shell {
    grid-template-columns: minmax(0, 1fr);
    padding-top: 0;
  }

  .page-privacy .clause-body,
  .page-privacy .clause-body *,
  .page-privacy .paper-card {
    display: block !important;
    visibility: visible !important;
  }

  .page-privacy .clause-chev {
    display: none !important;
  }
}