.page-disclaimer {
  --usage-rule: 1px solid var(--ink-700);
  background: var(--ink-900);
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-disclaimer .usage-hero {
  position: relative;
  padding: var(--sp-4) 0 var(--sp-5);
  background:
    radial-gradient(130% 110% at 88% -20%, rgba(200, 162, 74, 0.18), transparent 58%),
    radial-gradient(90% 90% at 0% 0%, rgba(110, 35, 32, 0.38), transparent 62%),
    var(--ink-900);
  border-bottom: var(--usage-rule);
}

.page-disclaimer .usage-hero .breadcrumb {
  margin-bottom: var(--sp-4);
}

.page-disclaimer .usage-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-disclaimer .usage-hero__eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--ruby);
  flex: none;
}

.page-disclaimer .usage-hero h1 {
  margin: var(--sp-2) 0 var(--sp-3);
  max-width: 22ch;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.75rem, 5.2vw, 3rem);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-disclaimer .usage-hero__lede {
  margin: 0;
  max-width: 60ch;
  font-family: var(--font-body);
  font-size: var(--fs-md);
  line-height: 1.9;
  color: var(--steel-lite);
}

.page-disclaimer .usage-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-1) var(--sp-3);
  margin: var(--sp-4) 0 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--gold-lite);
}

.page-disclaimer .usage-hero__meta li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-disclaimer .usage-hero__meta li::before {
  content: "";
  width: 6px;
  height: 6px;
  flex: none;
  background: var(--ruby);
  border-radius: 1px;
}

/* ---------- 横向目录带 ---------- */
.page-disclaimer .usage-toc {
  background: var(--ink-800);
  border-bottom: var(--usage-rule);
}

.page-disclaimer .usage-toc__track {
  display: flex;
  gap: var(--sp-2);
  margin: 0;
  padding: var(--sp-2) 0;
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: var(--ink-700) transparent;
  -webkit-overflow-scrolling: touch;
}

.page-disclaimer .usage-toc__track::-webkit-scrollbar {
  height: 4px;
}

.page-disclaimer .usage-toc__track::-webkit-scrollbar-thumb {
  background: var(--ink-700);
}

.page-disclaimer .usage-toc__item {
  flex: 0 0 auto;
  scroll-snap-align: start;
}

.page-disclaimer .usage-toc__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 16px;
  border: 1px solid var(--ink-700);
  border-radius: var(--radius);
  color: var(--paper);
  text-decoration: none;
  white-space: nowrap;
  font-family: var(--font-ui);
  font-size: var(--fs-sm);
  font-weight: 500;
  transition: border-color var(--dur-2) var(--ease), color var(--dur-2) var(--ease),
    background-color var(--dur-2) var(--ease);
}

.page-disclaimer .usage-toc__link:hover,
.page-disclaimer .usage-toc__link:focus-visible {
  border-color: var(--gold);
  color: var(--gold-lite);
  outline: none;
}

.page-disclaimer .usage-toc__link:focus-visible {
  box-shadow: 0 0 0 2px var(--gold-lite);
}

.page-disclaimer .usage-toc__link[aria-current="true"] {
  background: var(--wine);
  border-color: var(--ruby);
  color: var(--paper);
}

.page-disclaimer .usage-toc__num {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-disclaimer .usage-toc__link[aria-current="true"] .usage-toc__num {
  color: var(--gold-lite);
}

/* ---------- 正文 ---------- */
.page-disclaimer .usage-body {
  padding: var(--sp-5) 0 var(--sp-6);
}

.page-disclaimer .usage-flow {
  max-width: 880px;
}

.page-disclaimer .usage-figure {
  margin: 0 0 var(--sp-5);
}

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

.page-disclaimer .usage-figure .media-frame__caption {
  font-family: var(--font-ui);
  font-size: var(--fs-xs);
  letter-spacing: 0.02em;
  color: var(--steel);
}

.page-disclaimer .usage-section {
  scroll-margin-top: 24px;
}

.page-disclaimer .usage-section + .usage-section {
  margin-top: var(--sp-5);
  padding-top: var(--sp-5);
  border-top: var(--usage-rule);
}

.page-disclaimer .usage-section__head {
  display: flex;
  align-items: baseline;
  gap: var(--sp-2);
  margin-bottom: var(--sp-2);
}

.page-disclaimer .usage-section__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-disclaimer .usage-section h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.3rem, 3.6vw, 1.85rem);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-disclaimer .usage-section__intro {
  margin: 0 0 var(--sp-3);
  max-width: 62ch;
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.9;
  color: var(--steel-lite);
}

.page-disclaimer .usage-clauses {
  display: grid;
  gap: var(--sp-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .usage-clauses > li {
  display: grid;
  grid-template-columns: 2.25rem 1fr;
  gap: var(--sp-1);
  padding: var(--sp-2) var(--sp-3);
  background: var(--ink-800);
  border: var(--usage-rule);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.85;
  color: var(--paper);
  transition: border-color var(--dur-2) var(--ease), box-shadow var(--dur-3) var(--ease);
}

.page-disclaimer .usage-clauses__num {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  line-height: 2.1;
  letter-spacing: 0.04em;
  color: var(--gold);
}

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

.page-disclaimer .usage-clauses__body b,
.page-disclaimer .usage-clauses__body strong {
  font-weight: 700;
  color: var(--gold-lite);
}

.page-disclaimer .usage-link {
  color: var(--gold-lite);
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
  padding-bottom: 1px;
  transition: color var(--dur-1) var(--ease), border-color var(--dur-1) var(--ease);
}

.page-disclaimer .usage-link:hover,
.page-disclaimer .usage-link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
  outline: none;
}

/* ---------- 提示块 ---------- */
.page-disclaimer .usage-callout {
  margin: var(--sp-3) 0 0;
  padding: var(--sp-2) var(--sp-3);
  border-left: 4px solid var(--gold);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: 1.85;
}

.page-disclaimer .usage-callout__label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.16em;
  color: var(--gold-lite);
}

.page-disclaimer .usage-callout p {
  margin: 0;
  max-width: 66ch;
}

.page-disclaimer .usage-callout--wine {
  background: var(--wine);
  border-left-color: var(--ruby);
  color: var(--paper);
}

.page-disclaimer .usage-callout--gold {
  background: var(--ink-800);
  border-left-color: var(--gold);
  color: var(--paper);
}

/* ---------- 结尾入口 ---------- */
.page-disclaimer .usage-exit {
  padding: var(--sp-5) 0 var(--sp-6);
  background: var(--paper);
  color: var(--coal);
  border-top: 1px solid var(--ink-700);
}

.page-disclaimer .usage-exit__rule {
  width: 72px;
  height: 2px;
  margin: 0 0 var(--sp-3);
  border: 0;
  background: var(--ruby);
}

.page-disclaimer .usage-exit p {
  margin: 0 0 var(--sp-3);
  max-width: 56ch;
  font-family: var(--font-body);
  font-size: var(--fs-md);
  line-height: 1.9;
}

.page-disclaimer .usage-exit__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

.page-disclaimer .usage-exit__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-ui);
  font-size: var(--fs-sm);
  font-weight: 700;
  text-decoration: none;
  transition: background-color var(--dur-2) var(--ease), border-color var(--dur-2) var(--ease),
    color var(--dur-2) var(--ease);
}

.page-disclaimer .usage-exit__link::after {
  content: "→";
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
}

.page-disclaimer .usage-exit__link--primary {
  background: var(--ruby);
  color: var(--paper);
}

.page-disclaimer .usage-exit__link--primary:hover,
.page-disclaimer .usage-exit__link--primary:focus-visible {
  background: var(--ruby-deep);
  outline: none;
}

.page-disclaimer .usage-exit__link--ghost {
  border-color: var(--ink-700);
  color: var(--coal);
}

.page-disclaimer .usage-exit__link--ghost:hover,
.page-disclaimer .usage-exit__link--ghost:focus-visible {
  border-color: var(--gold);
  background: rgba(200, 162, 74, 0.14);
  outline: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 768px) {
  .page-disclaimer .usage-hero {
    padding: var(--sp-5) 0 var(--sp-6);
  }

  .page-disclaimer .usage-body {
    padding: var(--sp-6) 0 var(--sp-7);
  }

  .page-disclaimer .usage-exit {
    padding: var(--sp-6) 0;
  }
}

@media (min-width: 960px) {
  .page-disclaimer .usage-toc__track {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--sp-2);
    overflow: visible;
  }

  .page-disclaimer .usage-toc__link {
    justify-content: flex-start;
  }

  .page-disclaimer .usage-clauses > li {
    grid-template-columns: 2.75rem 1fr;
    padding: var(--sp-2) var(--sp-4);
  }

  .page-disclaimer .usage-figure {
    margin-bottom: var(--sp-6);
  }
}

@media (hover: hover) and (min-width: 960px) {
  .page-disclaimer .usage-clauses > li:hover {
    border-color: var(--ink-700);
    box-shadow: var(--shadow-2);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .usage-toc__link,
  .page-disclaimer .usage-clauses > li,
  .page-disclaimer .usage-link,
  .page-disclaimer .usage-exit__link {
    transition: none;
  }
}
<<<END>>>