.page-disclaimer {
  --u-measure: 68ch;
  --u-text: rgba(244, 247, 255, .82);
  --u-text-soft: rgba(244, 247, 255, .74);
  --u-hair: rgba(143, 166, 200, .22);
  padding-bottom: 76px;
}

.page-disclaimer .usage-crumb {
  padding-top: 26px;
  padding-bottom: 16px;
}

/* 首屏 */
.page-disclaimer .usage-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel-2);
}

.page-disclaimer .usage-hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .48;
}

.page-disclaimer .usage-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(115deg, rgba(5, 8, 20, .95) 0%, rgba(11, 18, 48, .84) 52%, rgba(18, 27, 68, .5) 100%),
    repeating-linear-gradient(90deg, transparent 0 78px, rgba(42, 55, 102, .38) 78px 79px);
}

.page-disclaimer .usage-hero__inner {
  position: relative;
  padding: 36px 22px 32px;
}

.page-disclaimer .usage-hero__title {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(34px, 6.4vw, 60px);
  line-height: 1.12;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-disclaimer .usage-hero__lede {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--mist);
}

.page-disclaimer .usage-hero__facts {
  margin: 28px 0 0;
  padding: 18px 0 0;
  list-style: none;
  display: grid;
  gap: 14px;
  border-top: 1px solid var(--u-hair);
}

.page-disclaimer .usage-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--mist);
}

.page-disclaimer .usage-hero__facts .mono {
  font-size: 21px;
  letter-spacing: .02em;
  color: var(--gold);
}

/* 主栅格 */
.page-disclaimer .usage-layout {
  display: grid;
  gap: 36px;
  padding-top: 44px;
}

/* 目录 */
.page-disclaimer .usage-toc {
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.page-disclaimer .usage-toc__title {
  margin: 0;
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-disclaimer .usage-toc__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-disclaimer .usage-toc__link {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 9px 6px 9px 10px;
  border-left: 2px solid transparent;
  text-decoration: none;
  font-size: 14px;
  line-height: 1.55;
  color: var(--mist);
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-disclaimer .usage-toc__link .mono {
  font-size: 11.5px;
  color: var(--gold);
  opacity: .75;
}

.page-disclaimer .usage-toc__link:hover,
.page-disclaimer .usage-toc__link:focus-visible {
  color: var(--paper);
  border-left-color: var(--gold);
  background: rgba(242, 181, 68, .07);
}

.page-disclaimer .usage-toc__link.is-active {
  color: var(--paper);
  border-left-color: var(--gold);
  background: rgba(242, 181, 68, .09);
}

.page-disclaimer .usage-toc__note {
  margin: 22px 0 0;
  padding-top: 15px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
}

.page-disclaimer .usage-toc__note a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 230, 197, .4);
}

.page-disclaimer .usage-toc__note a:hover,
.page-disclaimer .usage-toc__note a:focus-visible {
  border-bottom-color: var(--teal);
}

/* 条款 */
.page-disclaimer .usage-clause {
  padding: 34px 0 6px;
  border-top: 1px solid var(--line);
}

.page-disclaimer .usage-clause:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-disclaimer .usage-clause__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
}

.page-disclaimer .usage-clause__idx {
  font-size: 27px;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--gold);
  opacity: .88;
}

.page-disclaimer .usage-clause__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(21px, 3.6vw, 29px);
  line-height: 1.3;
  font-weight: 600;
  color: var(--paper);
}

.page-disclaimer .usage-clause__text {
  margin: 16px 0 0;
  max-width: var(--u-measure);
  font-size: 15.5px;
  line-height: 1.95;
  color: var(--u-text);
}

.page-disclaimer .usage-clause__text strong {
  font-family: var(--font-mono);
  font-size: .96em;
  font-weight: 600;
  color: var(--teal);
  word-break: break-all;
}

.page-disclaimer .usage-clause__text a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 230, 197, .4);
}

.page-disclaimer .usage-clause__text a:hover,
.page-disclaimer .usage-clause__text a:focus-visible {
  border-bottom-color: var(--teal);
}

.page-disclaimer .usage-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 11px;
  max-width: var(--u-measure);
}

.page-disclaimer .usage-list li {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--u-text-soft);
}

.page-disclaimer .usage-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .85em;
  width: 10px;
  height: 1px;
  background: var(--teal);
}

/* 版本对照表 */
.page-disclaimer .usage-versions {
  margin: 22px 0 0;
  max-width: var(--u-measure);
  border-top: 1px solid var(--line);
}

.page-disclaimer .usage-versions__row {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr);
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .usage-versions__row dt {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: .04em;
  color: var(--gold);
  white-space: nowrap;
}

.page-disclaimer .usage-versions__row dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--u-text-soft);
}

/* 页尾延伸 */
.page-disclaimer .usage-next {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}

.page-disclaimer .usage-next__heading {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(20px, 3.2vw, 26px);
  line-height: 1.35;
  font-weight: 600;
  color: var(--paper);
}

.page-disclaimer .usage-next__grid {
  display: grid;
  gap: 16px;
}

.page-disclaimer .usage-next__card {
  position: relative;
  display: block;
  padding: 24px 20px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  text-decoration: none;
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-disclaimer .usage-next__card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gold);
  transition: width .32s var(--ease);
}

.page-disclaimer .usage-next__card:hover::before,
.page-disclaimer .usage-next__card:focus-visible::before {
  width: 100%;
}

.page-disclaimer .usage-next__card:hover,
.page-disclaimer .usage-next__card:focus-visible {
  border-color: rgba(242, 181, 68, .45);
  background: var(--panel);
}

.page-disclaimer .usage-next__kicker {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-disclaimer .usage-next__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.45;
  font-weight: 600;
  color: var(--paper);
}

.page-disclaimer .usage-next__text {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-disclaimer .usage-next__more {
  display: inline-block;
  margin-top: 16px;
  font-size: 13.5px;
  letter-spacing: .02em;
  color: var(--teal);
}

@media (min-width: 600px) {
  .page-disclaimer .usage-hero__inner {
    padding: 52px 40px 44px;
  }

  .page-disclaimer .usage-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-disclaimer .usage-next__card {
    padding: 26px 26px;
  }

  .page-disclaimer .usage-versions__row {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 20px;
  }
}

@media (min-width: 760px) {
  .page-disclaimer .usage-next__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-disclaimer .usage-hero__inner {
    padding: 68px 56px 54px;
  }

  .page-disclaimer .usage-layout {
    grid-template-columns: 226px minmax(0, 1fr);
    gap: 60px;
    padding-top: 56px;
  }

  .page-disclaimer .usage-toc {
    position: sticky;
    top: 32px;
  }

  .page-disclaimer .usage-clause {
    padding-top: 40px;
  }

  .page-disclaimer .usage-clause__idx {
    font-size: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .usage-toc__link,
  .page-disclaimer .usage-next__card,
  .page-disclaimer .usage-next__card::before {
    transition: none;
  }
}

@media print {
  .page-disclaimer {
    padding-bottom: 0;
    background: #fff;
  }

  .page-disclaimer .usage-hero {
    border: 1px solid #8a8a8a;
    background: #fff;
  }

  .page-disclaimer .usage-hero__bg,
  .page-disclaimer .usage-toc,
  .page-disclaimer .usage-next {
    display: none !important;
  }

  .page-disclaimer .usage-hero::after {
    background: none;
  }

  .page-disclaimer .usage-hero__title,
  .page-disclaimer .usage-clause__title,
  .page-disclaimer .usage-hero__facts .mono,
  .page-disclaimer .usage-clause__idx {
    color: #111;
  }

  .page-disclaimer .usage-hero__lede,
  .page-disclaimer .usage-hero__facts li,
  .page-disclaimer .usage-clause__text,
  .page-disclaimer .usage-list li,
  .page-disclaimer .usage-versions__row dd {
    color: #222;
  }

  .page-disclaimer .usage-layout {
    display: block;
    padding-top: 18px;
  }

  .page-disclaimer .usage-clause {
    break-inside: avoid;
    page-break-inside: avoid;
    border-top: 1px solid #bbb;
  }
}