.page-disclaimer {
  --usage-rail: 96px;
  --usage-hair: 1px solid var(--trace);
}

.page-disclaimer .breadcrumb {
  padding-top: clamp(14px, 2.2vw, 26px);
}

/* 页头 */
.page-disclaimer .usage-head {
  position: relative;
  isolation: isolate;
  padding-block: clamp(28px, 5.5vw, 68px) clamp(22px, 3.5vw, 46px);
}

.page-disclaimer .usage-head::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(90deg, rgba(13, 124, 143, .085) 0 1px, transparent 1px 76px),
    repeating-linear-gradient(0deg, rgba(11, 60, 73, .06) 0 1px, transparent 1px 76px);
}

.page-disclaimer .usage-head__grid {
  display: grid;
  gap: clamp(22px, 3.6vw, 44px);
  align-items: end;
}

.page-disclaimer .usage-head__kicker {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--lake);
}

.page-disclaimer .usage-head__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(30px, 5.6vw, 56px);
  line-height: 1.1;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-disclaimer .usage-head__lede {
  margin: 0;
  max-width: 640px;
}

.page-disclaimer .usage-head__meta {
  margin: 16px 0 0;
}

.page-disclaimer .usage-head__media {
  margin: 0;
}

.page-disclaimer .usage-head__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 2px;
}

/* 目录锚点 */
.page-disclaimer .usage-toc {
  margin-top: clamp(26px, 4vw, 46px);
  border-top: var(--usage-hair);
  border-bottom: var(--usage-hair);
}

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

.page-disclaimer .usage-toc__item + .usage-toc__item {
  border-top: var(--usage-hair);
}

.page-disclaimer .usage-toc__link {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  align-items: baseline;
  gap: 14px;
  padding: 15px 8px;
  color: var(--ink);
  text-decoration: none;
  transition: color .2s var(--ease), background-color .2s var(--ease);
}

.page-disclaimer .usage-toc__link:hover {
  color: var(--lake);
  background-color: rgba(13, 124, 143, .06);
}

.page-disclaimer .usage-toc__num {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

/* 条款章节 */
.page-disclaimer .usage-clause {
  display: grid;
  gap: 14px;
  padding-block: clamp(30px, 4.6vw, 58px);
}

.page-disclaimer .usage-clause + .usage-clause {
  border-top: var(--usage-hair);
}

.page-disclaimer .usage-clause__num {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 2.8vw, 36px);
  line-height: 1;
  letter-spacing: .02em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.page-disclaimer .usage-clause__body {
  display: grid;
  gap: 18px;
  max-width: 880px;
}

.page-disclaimer .usage-clause__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1.35;
  color: var(--ink);
}

.page-disclaimer .usage-clause__lede {
  margin: 0;
  max-width: var(--prose);
  color: var(--ink);
}

.page-disclaimer .usage-clause__sub {
  margin: 0;
  font-size: 13px;
  letter-spacing: .14em;
  font-weight: 600;
  color: var(--rock);
}

.page-disclaimer .usage-clause a {
  color: var(--lake);
  text-underline-offset: 3px;
}

/* 条目列表 */
.page-disclaimer .usage-points {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-disclaimer .usage-points__item {
  display: grid;
  gap: 5px;
  padding: 15px 0;
  border-top: var(--usage-hair);
}

.page-disclaimer .usage-points__item:last-child {
  border-bottom: var(--usage-hair);
}

.page-disclaimer .usage-points__label {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--lake);
}

.page-disclaimer .usage-points__text {
  margin: 0;
  color: var(--ink);
}

/* 引用示例 */
.page-disclaimer .usage-sample {
  display: grid;
  gap: 10px;
  padding: clamp(16px, 2.4vw, 26px);
  background: var(--chalk);
  border-left: 3px solid var(--indigo);
}

.page-disclaimer .usage-sample__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--indigo);
}

.page-disclaimer .usage-sample__text {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.75;
  color: var(--ink);
}

.page-disclaimer .usage-sample__source {
  margin: 0;
  font-size: 13px;
  color: var(--rock);
}

/* 表格 */
.page-disclaimer .usage-table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

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

.page-disclaimer .usage-table thead th {
  text-align: left;
  padding: 0 20px 12px 0;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .12em;
  color: var(--rock);
  border-bottom: var(--usage-hair);
}

.page-disclaimer .usage-table tbody th,
.page-disclaimer .usage-table tbody td {
  text-align: left;
  padding: 14px 20px 14px 0;
  border-bottom: var(--usage-hair);
  vertical-align: top;
  color: var(--ink);
}

.page-disclaimer .usage-table tbody th {
  font-weight: 600;
  white-space: nowrap;
}

/* 旁注与折叠条目 */
.page-disclaimer .aside-note {
  margin: 0;
  max-width: var(--prose);
}

.page-disclaimer .accordion {
  margin-top: 4px;
}

/* 底部备案色带 */
.page-disclaimer .usage-band {
  margin-top: clamp(44px, 7vw, 92px);
  margin-bottom: clamp(28px, 4vw, 56px);
  background: var(--deep);
  color: var(--chalk);
}

.page-disclaimer .usage-band__inner {
  display: grid;
  gap: 20px;
  padding-block: clamp(28px, 4.4vw, 52px);
}

.page-disclaimer .usage-band__label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--trace);
}

.page-disclaimer .usage-band__note {
  margin: 0;
  max-width: 660px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(233, 237, 240, .88);
}

.page-disclaimer .usage-band__icp {
  margin: 0;
  font-size: clamp(16px, 1.9vw, 21px);
  letter-spacing: .06em;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

/* 焦点态 */
.page-disclaimer a:focus-visible,
.page-disclaimer summary:focus-visible {
  outline: 2px solid var(--lake);
  outline-offset: 3px;
  border-radius: 2px;
}

@media (min-width: 720px) {
  .page-disclaimer .usage-points__item {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 6px 26px;
    padding: 17px 0;
  }

  .page-disclaimer .usage-points__label {
    padding-top: 2px;
  }
}

@media (min-width: 840px) {
  .page-disclaimer .usage-toc__list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-disclaimer .usage-toc__item + .usage-toc__item {
    border-top: 0;
    border-left: var(--usage-hair);
  }

  .page-disclaimer .usage-toc__link {
    grid-template-columns: minmax(0, 1fr);
    gap: 8px;
    padding: 20px 20px 22px;
  }

  .page-disclaimer .usage-band__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    column-gap: 48px;
  }

  .page-disclaimer .usage-band__icp {
    white-space: nowrap;
  }
}

@media (min-width: 900px) {
  .page-disclaimer .usage-head__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
  }

  .page-disclaimer .usage-clause {
    grid-template-columns: var(--usage-rail) minmax(0, 1fr);
    column-gap: clamp(22px, 3vw, 46px);
  }
}