.page-disclaimer {
  --usage-measure: 720px;
  --usage-index: 76px;
  padding-bottom: 72px;
}

.page-disclaimer .usage-col {
  max-width: var(--usage-measure);
  margin-inline: auto;
}

.page-disclaimer .usage-col > .breadcrumb {
  margin: 24px 0 18px;
}

/* 首屏 */
.page-disclaimer .usage-hero {
  padding: 4px 0 0;
}

.page-disclaimer .usage-hero::before {
  content: "";
  display: block;
  width: 68px;
  height: 2px;
  margin-bottom: 22px;
  background: linear-gradient(90deg, var(--cyan), rgba(55, 245, 210, 0));
}

.page-disclaimer .usage-hero__tag {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-disclaimer .usage-hero__title {
  margin: 0 0 18px;
  font-size: clamp(27px, 5.4vw, 40px);
  line-height: 1.24;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-disclaimer .usage-hero .lede {
  margin: 0;
  font-size: 16.5px;
  line-height: 1.82;
  color: var(--text);
}

.page-disclaimer .usage-ruler {
  display: block;
  width: 100%;
  height: 56px;
  margin: 28px 0 0;
}

/* 首图 */
.page-disclaimer .usage-figure {
  margin: 24px 0 0;
}

/* 章节列表 */
.page-disclaimer .usage-list {
  margin-top: 10px;
}

.page-disclaimer .usage-sec {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding: 30px 0 26px;
  border-top: 1px solid var(--line);
}

.page-disclaimer .usage-list > .usage-sec:first-child {
  border-top: 0;
  padding-top: 18px;
}

.page-disclaimer .usage-sec__index {
  min-width: 0;
}

.page-disclaimer .usage-sec__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(55, 245, 210, 0.28);
  padding-bottom: 2px;
}

.page-disclaimer .usage-sec__num:hover,
.page-disclaimer .usage-sec__num:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.page-disclaimer .usage-sec__main {
  min-width: 0;
}

.page-disclaimer .usage-sec__title {
  margin: 0 0 14px;
  font-size: 19.5px;
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-disclaimer .usage-sec__main p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text);
}

.page-disclaimer .usage-sec__main p:last-child {
  margin-bottom: 0;
}

.page-disclaimer .usage-sec__main a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(55, 245, 210, 0.38);
}

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

/* 要点列表 */
.page-disclaimer .usage-points {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-disclaimer .usage-points li {
  position: relative;
  padding-left: 20px;
  font-size: 16px;
  line-height: 1.74;
  color: var(--text);
}

.page-disclaimer .usage-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.74em;
  width: 9px;
  height: 1px;
  background: var(--cyan);
}

/* 引用示例 */
.page-disclaimer .usage-quote {
  margin: 6px 0 16px;
  padding: 14px 16px;
  border-left: 2px solid var(--orange);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: linear-gradient(90deg, rgba(255, 122, 47, 0.11), rgba(255, 122, 47, 0));
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.72;
  letter-spacing: 0.02em;
  color: var(--text);
  overflow-wrap: anywhere;
}

@media (min-width: 760px) {
  .page-disclaimer {
    --usage-index: 92px;
  }

  .page-disclaimer .usage-sec {
    grid-template-columns: var(--usage-index) minmax(0, 1fr);
    gap: 0 24px;
    padding: 40px 0 34px;
  }

  .page-disclaimer .usage-sec__index {
    text-align: right;
    padding-top: 4px;
  }

  .page-disclaimer .usage-sec__num {
    font-size: 12px;
    letter-spacing: 0.1em;
  }

  .page-disclaimer .usage-sec__title {
    font-size: 21.5px;
    margin-bottom: 16px;
  }
}