.page-privacy {
  --rail-w: 216px;
  --privacy-measure: 40em;
}

/* 首屏 ---------------------------------------------------- */

.page-privacy .privacy-hero {
  padding-block: 28px 44px;
  border-bottom: 1px solid var(--line-soft);
}

.page-privacy .privacy-hero__grid {
  display: grid;
  gap: 26px;
  grid-template-columns: 1fr;
}

.page-privacy .privacy-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(32px, 6.4vw, 58px);
  line-height: 1.04;
  letter-spacing: -0.01em;
  color: var(--white);
  max-width: 15em;
}

.page-privacy .privacy-hero__lede {
  margin: 18px 0 0;
  max-width: 33em;
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: 0.01em;
  color: var(--mist);
}

.page-privacy .privacy-hero__media {
  margin: 0;
}

@media (min-width: 1000px) {
  .page-privacy .privacy-hero {
    padding-block: 40px 56px;
  }
  .page-privacy .privacy-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    gap: 52px;
    align-items: end;
  }
}

/* 导轨 + 正文布局 ------------------------------------------ */

.page-privacy .privacy-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.page-privacy .privacy-rail {
  position: sticky;
  top: 0;
  z-index: 6;
  margin: 0 calc(var(--pad) * -1);
  padding: 10px var(--pad) 8px;
  background: rgba(4, 16, 29, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.page-privacy .privacy-rail__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-privacy .privacy-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-privacy .privacy-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line);
  background: rgba(12, 39, 64, 0.55);
  color: var(--mist);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 160ms var(--ease), color 160ms var(--ease), background 160ms var(--ease);
}

.page-privacy .privacy-rail__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-privacy .privacy-rail__link:hover,
.page-privacy .privacy-rail__link:focus-visible {
  border-color: var(--cyan);
  background: rgba(47, 227, 210, 0.1);
  color: var(--white);
}

@media (min-width: 1024px) {
  .page-privacy .privacy-layout {
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
    padding-block: 8px 24px;
  }
  .page-privacy .privacy-rail {
    margin: 0;
    padding: 4px 0 0 18px;
    top: 32px;
    background: none;
    backdrop-filter: none;
    border-bottom: 0;
    border-left: 1px solid var(--line);
  }
  .page-privacy .privacy-rail__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
  }
  .page-privacy .privacy-rail__link {
    width: 100%;
    min-height: 42px;
    padding: 8px 0 8px 12px;
    border: 0;
    border-left: 2px solid transparent;
    background: none;
    justify-content: flex-start;
    font-size: 13.5px;
  }
  .page-privacy .privacy-rail__link:hover,
  .page-privacy .privacy-rail__link:focus-visible {
    border-left-color: var(--cyan);
    background: linear-gradient(90deg, rgba(47, 227, 210, 0.12), rgba(47, 227, 210, 0));
  }
}

.page-privacy .privacy-body {
  padding-top: 8px;
  min-width: 0;
}

/* 条款 ---------------------------------------------------- */

.page-privacy .privacy-clause {
  padding-block: 40px 34px;
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: 92px;
}

.page-privacy .privacy-clause__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 20px;
}

.page-privacy .privacy-clause__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: clamp(42px, 8vw, 64px);
  line-height: 0.82;
  letter-spacing: 0.02em;
  color: var(--cyan);
  opacity: 0.38;
}

.page-privacy .privacy-clause__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(22px, 4.2vw, 30px);
  line-height: 1.22;
  letter-spacing: -0.005em;
  color: var(--white);
}

.page-privacy .privacy-clause__content {
  max-width: var(--privacy-measure);
  font-size: 16px;
  line-height: 1.85;
  letter-spacing: 0.01em;
  color: var(--mist);
}

.page-privacy .privacy-clause__content > p {
  margin: 0 0 1.25em;
}

.page-privacy .privacy-clause__content > p:last-child {
  margin-bottom: 0;
}

.page-privacy .privacy-clause__action {
  max-width: var(--privacy-measure);
  margin: 22px 0 0;
  padding: 13px 16px 13px 18px;
  border-left: 2px solid var(--cyan);
  background: linear-gradient(90deg, rgba(47, 227, 210, 0.1), rgba(4, 16, 29, 0));
  font-size: 14px;
  line-height: 1.72;
  color: var(--cyan-soft);
}

.page-privacy .privacy-clause__action a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-privacy abbr[title] {
  text-decoration: underline dotted var(--cyan);
  text-underline-offset: 3px;
  cursor: help;
  color: var(--cyan-soft);
}

/* 条款 01 列表 */

.page-privacy .privacy-list {
  margin: 0 0 1.3em;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-privacy .privacy-list li {
  padding: 14px 16px;
  background: var(--ink-800);
  line-height: 1.72;
  font-size: 15px;
}

.page-privacy .privacy-list strong {
  color: var(--white);
  font-weight: 600;
}

/* 条款 02 用途矩阵 */

.page-privacy .privacy-uses {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0 0 1.3em;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-privacy .privacy-use {
  padding: 20px 18px 22px;
  background: var(--ink-800);
}

.page-privacy .privacy-use__idx {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-privacy .privacy-use__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.3;
  color: var(--white);
}

.page-privacy .privacy-use p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

@media (min-width: 820px) {
  .page-privacy .privacy-uses {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* 条款 03 本地存储 */

.page-privacy .privacy-storage {
  margin: 0 0 1.3em;
  border-top: 1px solid var(--line);
}

.page-privacy .privacy-storage__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

.page-privacy .privacy-storage dt {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--cyan-soft);
}

.page-privacy .privacy-storage dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--mist);
}

@media (min-width: 640px) {
  .page-privacy .privacy-storage__row {
    grid-template-columns: 176px minmax(0, 1fr);
    gap: 22px;
    align-items: baseline;
  }
}

/* 条款 04 折叠说明 */

.page-privacy .privacy-details {
  margin-top: 6px;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-privacy .privacy-details > summary {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: 12px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--cyan-soft);
}

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

.page-privacy .privacy-details > summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--cyan);
}

.page-privacy .privacy-details[open] > summary::after {
  content: "–";
}

.page-privacy .privacy-details p {
  margin: 0;
  padding: 14px 16px 18px;
  border-top: 1px solid var(--line-soft);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* 条款 05 权利与联系 */

.page-privacy .privacy-rights {
  margin: 0 0 1.4em;
  padding: 0;
  list-style: none;
  counter-reset: pr;
  display: grid;
  gap: 16px;
}

.page-privacy .privacy-rights li {
  position: relative;
  padding-left: 46px;
}

.page-privacy .privacy-rights li::before {
  counter-increment: pr;
  content: counter(pr, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--orange);
}

.page-privacy .privacy-rights h3 {
  margin: 0 0 4px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  color: var(--white);
}

.page-privacy .privacy-rights p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-privacy .privacy-contact {
  margin: 0;
  padding: 20px 18px 22px;
  border: 1px solid var(--cyan);
  background: linear-gradient(155deg, rgba(47, 227, 210, 0.13), rgba(4, 16, 29, 0) 62%);
}

.page-privacy .privacy-contact__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-privacy .privacy-contact__line {
  margin: 0 0 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: baseline;
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--white);
  word-break: break-all;
}

.page-privacy .privacy-contact__key {
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: 0.01em;
  color: var(--graphite);
}

.page-privacy .privacy-contact__note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--graphite);
}

/* 延伸阅读 ------------------------------------------------ */

.page-privacy .privacy-more {
  margin-top: 24px;
  padding-block: 52px 72px;
  border-top: 1px solid var(--line);
}

.page-privacy .privacy-more__title {
  margin: 0 0 24px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(22px, 4vw, 30px);
  line-height: 1.2;
  color: var(--white);
}

.page-privacy .privacy-more__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-privacy .privacy-more__card {
  display: block;
  padding: 22px 20px 26px;
  background: var(--ink-900);
  color: inherit;
  text-decoration: none;
  transition: background 180ms var(--ease), transform 180ms var(--ease);
}

.page-privacy .privacy-more__card:hover,
.page-privacy .privacy-more__card:focus-visible {
  background: var(--ink-700);
  transform: translateY(-2px);
}

.page-privacy .privacy-more__card h3 {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.25;
  color: var(--white);
}

.page-privacy .privacy-more__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--graphite);
}

@media (min-width: 760px) {
  .page-privacy .privacy-more__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-privacy .privacy-more__card {
    padding: 26px 22px 30px;
  }
}

/* 焦点可见性 ---------------------------------------------- */

.page-privacy a:focus-visible,
.page-privacy summary:focus-visible,
.page-privacy button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .page-privacy .privacy-more__card {
    transition: none;
  }
  .page-privacy .privacy-more__card:hover,
  .page-privacy .privacy-more__card:focus-visible {
    transform: none;
  }
}