.page-disclaimer {
  --u-note-col: 56px;
  background: var(--canvas);
  color: var(--ink);
  overflow-x: clip;
}

/* 面包屑 */
.page-disclaimer .breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: clamp(20px, 4vw, 32px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--graphite);
}

.page-disclaimer .breadcrumb__link {
  color: var(--xue-deep);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.page-disclaimer .breadcrumb__link:hover,
.page-disclaimer .breadcrumb__link:focus-visible {
  color: var(--gold-ink);
  border-bottom-color: var(--gold);
}

.page-disclaimer .breadcrumb__item {
  color: var(--graphite);
}

.page-disclaimer .breadcrumb__item::before {
  content: "/";
  margin-right: 10px;
  color: var(--line);
}

/* 首屏 */
.page-disclaimer .usage-hero {
  display: grid;
  gap: clamp(28px, 5vw, 48px);
  align-items: center;
  padding-block: clamp(28px, 5vw, 56px) clamp(38px, 6vw, 76px);
}

.page-disclaimer .usage-hero__text {
  max-width: 46ch;
}

.page-disclaimer .usage-kicker {
  margin: 0;
  display: inline-block;
}

.page-disclaimer .usage-hero h1 {
  margin: 16px 0 20px;
  font-size: clamp(34px, 5.4vw, 60px);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-disclaimer .usage-hero__lede {
  margin: 0;
  font-size: 17px;
  line-height: 1.85;
  color: var(--graphite);
}

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

.page-disclaimer .usage-hero__figure .figure__frame {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--xue-pale);
}

.page-disclaimer .usage-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-disclaimer .figure__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--graphite);
}

/* 条款主体 */
.page-disclaimer .usage-flow {
  padding-bottom: clamp(44px, 7vw, 88px);
}

.page-disclaimer .usage-sec {
  display: grid;
  gap: 18px;
  padding-block: clamp(30px, 4.5vw, 52px);
  border-top: 1px solid var(--line);
}

.page-disclaimer .usage-sec:first-child {
  border-top: 0;
  padding-top: clamp(16px, 3vw, 28px);
}

.page-disclaimer .usage-sec__body {
  max-width: 68ch;
}

.page-disclaimer .usage-sec h2 {
  margin: 12px 0 18px;
  font-size: clamp(22px, 2.7vw, 30px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-disclaimer .usage-sec p {
  margin: 0 0 14px;
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink);
}

.page-disclaimer .usage-sec__body .usage-sec__lead {
  margin-bottom: 18px;
  padding-left: 16px;
  border-left: 3px solid var(--gold);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.75;
  color: var(--xue-deep);
}

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

.page-disclaimer .usage-sec__note {
  display: none;
  margin: 0;
  justify-self: end;
  align-self: start;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--grape);
  writing-mode: vertical-rl;
}

/* 引用示例 */
.page-disclaimer .usage-sample {
  display: grid;
  gap: 4px;
  margin: 4px 0 0;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: var(--xue-pale);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.9;
  color: var(--xue-deep);
  cursor: pointer;
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-disclaimer .usage-sample:hover,
.page-disclaimer .usage-sample:focus-visible {
  outline: 2px solid var(--xue);
  outline-offset: 3px;
}

.page-disclaimer .usage-sample.is-copied {
  background: var(--gold-pale);
  box-shadow: inset 3px 0 0 var(--gold);
}

.page-disclaimer .usage-sec__body .usage-sample__hint {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--graphite);
}

/* 页尾收束 */
.page-disclaimer .usage-tail {
  display: grid;
  gap: 20px;
  padding-top: clamp(24px, 3.5vw, 34px);
  border-top: 1.5px solid var(--xue);
}

.page-disclaimer .usage-tail__text {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--graphite);
}

.page-disclaimer .usage-tail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* 响应式 */
@media (min-width: 900px) {
  .page-disclaimer .usage-hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-disclaimer .usage-sec {
    grid-template-columns: minmax(0, 1fr) var(--u-note-col);
    align-items: start;
  }

  .page-disclaimer .usage-sec__note {
    display: block;
    margin-top: 46px;
  }
}

@media (min-width: 1100px) {
  .page-disclaimer .usage-sec__body {
    padding-right: 24px;
  }
}

@media (max-width: 640px) {
  .page-disclaimer .usage-sec__body .usage-sec__lead {
    padding-left: 12px;
    font-size: 17px;
  }

  .page-disclaimer .usage-sample {
    padding: 15px 16px;
    font-size: 12px;
  }

  .page-disclaimer .usage-tail__actions .pill {
    flex: 1 1 auto;
    text-align: center;
  }
}