.page-disclaimer {
  --usage-card: #FBF5E8;
  --usage-ink-soft: rgba(43, 33, 24, 0.8);
  --usage-line-soft: rgba(43, 33, 24, 0.16);
  --usage-mist-line: rgba(143, 163, 184, 0.45);
  background: var(--paper);
  color: var(--brown);
  overflow-wrap: break-word;
}

.page-disclaimer .usage-wrap {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding-inline: 20px;
}

.page-disclaimer .usage-read {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  padding-inline: 20px;
}

/* ---------- 首屏 ---------- */
.page-disclaimer .usage-hero {
  position: relative;
  background: var(--ink);
  color: var(--paper);
  padding: 26px 0 0;
  overflow: hidden;
  border-bottom: 4px solid var(--brown);
}

.page-disclaimer .usage-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(143, 163, 184, 0.16) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(143, 163, 184, 0.16) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.3) 72%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, 0.3) 72%, transparent 100%);
  pointer-events: none;
}

.page-disclaimer .usage-hero__inner {
  position: relative;
  z-index: 1;
  padding-bottom: 30px;
}

.page-disclaimer .usage-hero .breadcrumbs {
  margin: 0 0 22px;
}

.page-disclaimer .usage-hero .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-disclaimer .usage-hero .breadcrumb-item {
  display: inline-flex;
  align-items: center;
}

.page-disclaimer .usage-hero .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 12px;
  color: var(--signal);
}

.page-disclaimer .usage-hero .breadcrumb-link {
  color: var(--mist);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-disclaimer .usage-hero .breadcrumb-link:hover,
.page-disclaimer .usage-hero .breadcrumb-link:focus-visible {
  color: var(--score);
}

.page-disclaimer .usage-hero__kicker {
  display: inline-block;
  margin: 0 0 18px;
  padding: 6px 14px;
  border: 2px solid var(--signal);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--score);
}

.page-disclaimer .usage-hero__title {
  margin: 0 0 18px;
  font-size: clamp(38px, 10vw, 76px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-disclaimer .usage-hero__lede {
  max-width: 64ch;
  margin: 0 0 28px;
  font-size: 16.5px;
  line-height: 1.9;
  color: rgba(244, 236, 221, 0.86);
}

.page-disclaimer .usage-hero__meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px 28px;
  margin: 0;
  padding-top: 20px;
  border-top: 2px dashed var(--usage-mist-line);
}

.page-disclaimer .usage-hero__meta > div {
  min-width: 0;
}

.page-disclaimer .usage-hero__meta dt {
  margin: 0 0 6px;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-disclaimer .usage-hero__meta dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
}

.page-disclaimer .usage-banner {
  position: relative;
  z-index: 1;
  margin: 0;
}

.page-disclaimer .usage-banner img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 380px;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

/* ---------- 章节跳转 ---------- */
.page-disclaimer .usage-toc {
  background: var(--ink-2);
  border-bottom: 3px solid var(--brown);
  padding: 10px 0;
}

.page-disclaimer .usage-toc__list {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 4px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-disclaimer .usage-toc__link {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 16px;
  border: 2px solid var(--usage-mist-line);
  border-radius: var(--radius-pill);
  color: var(--paper);
  font-size: 13.5px;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-disclaimer .usage-toc__no {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--score);
  transition: color 0.2s var(--ease);
}

.page-disclaimer .usage-toc__link:hover,
.page-disclaimer .usage-toc__link:focus-visible {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--on-signal);
}

.page-disclaimer .usage-toc__link:hover .usage-toc__no,
.page-disclaimer .usage-toc__link:focus-visible .usage-toc__no {
  color: var(--on-signal);
}

/* ---------- 长卷正文 ---------- */
.page-disclaimer .usage-body {
  padding: 40px 0 56px;
}

.page-disclaimer .usage-chapter {
  padding-bottom: 34px;
  margin-bottom: 34px;
  border-bottom: 2px dashed var(--perf);
  scroll-margin-top: 140px;
}

.page-disclaimer .usage-chapter:last-of-type {
  border-bottom: 0;
  margin-bottom: 0;
}

.page-disclaimer .usage-chapter__rail {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 10px;
}

.page-disclaimer .usage-chapter__no {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--signal);
}

.page-disclaimer .usage-chapter__rail::after {
  content: "";
  flex: 1 1 auto;
  height: 8px;
  min-width: 40px;
  background-image: repeating-linear-gradient(to right, var(--perf) 0 7px, transparent 7px 16px);
  background-repeat: repeat-x;
}

.page-disclaimer .usage-chapter__title {
  margin: 0 0 18px;
  font-size: clamp(23px, 5.4vw, 34px);
  font-weight: 800;
  line-height: 1.32;
  letter-spacing: -0.01em;
  color: var(--brown);
}

.page-disclaimer .usage-chapter__title::before {
  content: "";
  display: block;
  width: 44px;
  height: 7px;
  margin-bottom: 12px;
  background: var(--signal);
}

.page-disclaimer .usage-chapter__main p {
  margin: 0 0 16px;
  font-size: 16.5px;
  line-height: 1.92;
  color: var(--usage-ink-soft);
}

.page-disclaimer .usage-chapter__main strong {
  color: var(--brown);
}

.page-disclaimer .usage-chapter__main a {
  color: var(--brown);
  text-decoration: underline;
  text-decoration-color: var(--signal);
  text-underline-offset: 3px;
}

/* 条目列表 */
.page-disclaimer .usage-list {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-disclaimer .usage-list li {
  position: relative;
  padding-left: 28px;
  font-size: 16px;
  line-height: 1.86;
  color: var(--usage-ink-soft);
}

.page-disclaimer .usage-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 10px;
  width: 9px;
  height: 9px;
  background: var(--signal);
  border: 2px solid var(--brown);
}

/* 术语对照表 */
.page-disclaimer .usage-terms {
  margin: 0 0 20px;
  border-top: 2px solid var(--brown);
}

.page-disclaimer .usage-terms > div {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 2px;
  border-bottom: 1px solid var(--usage-line-soft);
}

.page-disclaimer .usage-terms dt {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--brown);
}

.page-disclaimer .usage-terms dd {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.86;
  color: var(--usage-ink-soft);
}

/* 提示块 */
.page-disclaimer p.usage-note {
  margin: 0 0 6px;
  padding: 16px 18px;
  background: var(--usage-card);
  border: 2px solid var(--brown);
  border-left: 8px solid var(--signal);
  box-shadow: var(--shadow-paper);
  font-size: 15.5px;
  line-height: 1.84;
  color: var(--brown);
}

/* 相关页面 */
.page-disclaimer .usage-links {
  display: grid;
  gap: 12px;
  margin: 26px 0 30px;
}

.page-disclaimer .usage-links a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border: 2px solid var(--brown);
  border-radius: var(--radius-card);
  background: var(--usage-card);
  color: var(--brown);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.18s var(--ease), background 0.18s var(--ease), color 0.18s var(--ease);
}

.page-disclaimer .usage-links a::after {
  content: "→";
  font-family: var(--font-mono);
  color: var(--signal);
  transition: color 0.18s var(--ease);
}

.page-disclaimer .usage-links a:hover,
.page-disclaimer .usage-links a:focus-visible {
  background: var(--ink);
  color: var(--paper);
  transform: translate(-2px, -2px);
}

.page-disclaimer .usage-links a:hover::after,
.page-disclaimer .usage-links a:focus-visible::after {
  color: var(--score);
}

/* 收束 */
.page-disclaimer .usage-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 20px;
  border-top: 3px solid var(--brown);
}

.page-disclaimer .usage-foot__time {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.page-disclaimer .usage-totop {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: 2px solid var(--brown);
  border-radius: var(--radius-pill);
  background: var(--signal);
  color: var(--on-signal);
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
  box-shadow: 4px 4px 0 var(--brown);
  transition: transform 0.16s var(--ease), box-shadow 0.16s var(--ease);
}

.page-disclaimer .usage-totop::before {
  content: "↑";
  font-family: var(--font-mono);
}

.page-disclaimer .usage-totop:hover,
.page-disclaimer .usage-totop:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--brown);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-disclaimer .usage-hero__meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 700px) {
  .page-disclaimer .usage-terms > div {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }

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

@media (min-width: 860px) {
  .page-disclaimer .usage-hero {
    padding-top: 40px;
  }

  .page-disclaimer .usage-hero__lede {
    font-size: 17.5px;
  }

  .page-disclaimer .usage-body {
    padding: 56px 0 72px;
  }

  .page-disclaimer .usage-chapter {
    display: grid;
    grid-template-columns: 64px minmax(0, 1fr);
    column-gap: 30px;
    align-items: stretch;
    padding-bottom: 48px;
    margin-bottom: 48px;
  }

  .page-disclaimer .usage-chapter__rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
    margin-bottom: 0;
  }

  .page-disclaimer .usage-chapter__rail::after {
    flex: 1 1 auto;
    width: 8px;
    height: auto;
    min-height: 48px;
    background-image: repeating-linear-gradient(to bottom, var(--perf) 0 7px, transparent 7px 16px);
    background-repeat: repeat-y;
  }

  .page-disclaimer .usage-chapter__main p {
    font-size: 17px;
  }
}

@media (min-width: 1240px) {
  .page-disclaimer .usage-wrap,
  .page-disclaimer .usage-read {
    padding-inline: 0;
  }
}
</PAGE_CSS>>>