.page-disclaimer {
  --usage-rail-w: 246px;
  --usage-gap: clamp(22px, 3vw, 46px);
  position: relative;
  color: var(--text);
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-disclaimer .breadcrumbs {
  padding-top: clamp(14px, 2vw, 22px);
}

/* ---------- 首屏 ---------- */
.page-disclaimer .usage-hero {
  position: relative;
  overflow: clip;
  padding: clamp(18px, 3vw, 32px) 0 clamp(34px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .usage-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(120% 96% at 84% 0%, rgba(45, 226, 230, 0.12), transparent 58%),
    linear-gradient(115deg, rgba(45, 226, 230, 0.09) 0%, rgba(45, 226, 230, 0) 46%),
    linear-gradient(296deg, rgba(255, 107, 74, 0.13) 0%, rgba(255, 107, 74, 0) 40%);
  clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
}

.page-disclaimer .usage-hero-grid {
  position: relative;
  display: grid;
  gap: clamp(22px, 4vw, 44px);
  align-items: center;
}

.page-disclaimer .usage-hero-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  padding: 5px 10px;
  transform: rotate(-1.6deg);
}

.page-disclaimer .usage-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(28px, 5.4vw, 56px);
  line-height: 1.16;
  letter-spacing: -0.015em;
  color: var(--mist-050);
  margin: 18px 0 18px;
  max-width: 18ch;
}

.page-disclaimer .usage-lede {
  font-size: clamp(15px, 1.7vw, 17.5px);
  line-height: 1.8;
  color: var(--text-muted);
  margin: 0 0 20px;
  max-width: 56ch;
}

.page-disclaimer .usage-hero-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.page-disclaimer .usage-hero-dot {
  width: 5px;
  height: 5px;
  background: var(--coral-500);
  border-radius: 50%;
  display: inline-block;
}

.page-disclaimer .usage-hero-figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line-strong);
  background: var(--deep-800);
  box-shadow: var(--shadow-panel);
}

.page-disclaimer .usage-hero-figure::after {
  content: "";
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 44px;
  height: 44px;
  background: var(--coral-500);
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
}

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

.page-disclaimer .usage-hero-figure .figure-caption {
  margin: 0;
  padding: 9px 12px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

/* ---------- 主体两栏 ---------- */
.page-disclaimer .usage-body {
  display: grid;
  gap: var(--usage-gap);
  margin-top: clamp(26px, 4vw, 52px);
  align-items: start;
}

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

/* ---------- 筛选条 ---------- */
.page-disclaimer .usage-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(18px, 2.6vw, 26px);
  padding-bottom: 14px;
  border-bottom: 1px dashed var(--line-strong);
}

.page-disclaimer .filter-chip[aria-pressed="true"] {
  border-color: var(--cyan-400);
  color: var(--cyan-400);
}

.page-disclaimer .filter-status {
  margin: 0 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

/* ---------- 条款 ---------- */
.page-disclaimer .usage-clause {
  position: relative;
  margin-bottom: clamp(16px, 2.4vw, 24px);
  padding: clamp(20px, 3vw, 32px) clamp(18px, 2.6vw, 30px);
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: 2px;
  box-shadow: var(--shadow-panel);
}

.page-disclaimer .usage-clause::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--cyan-400) 0%, rgba(45, 226, 230, 0) 68%);
}

.page-disclaimer .usage-clause[hidden] {
  display: none;
}

.page-disclaimer .usage-clause-head {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 14px;
}

.page-disclaimer .usage-clause-num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--ink-900);
  background: var(--paper-050);
  padding: 4px 9px;
  border-radius: 1px;
  transform: rotate(-2deg);
  box-shadow: 0 2px 0 rgba(45, 226, 230, 0.6);
}

.page-disclaimer .usage-clause-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 3vw, 27px);
  line-height: 1.3;
  letter-spacing: -0.008em;
  color: var(--mist-050);
  margin: 0;
  flex: 1 1 220px;
  min-width: 0;
}

.page-disclaimer .usage-clause-body p {
  margin: 0 0 0.9em;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--text);
}

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

.page-disclaimer .usage-points {
  list-style: none;
  margin: 16px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 10px;
}

.page-disclaimer .usage-points li {
  position: relative;
  padding-left: 20px;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--text-muted);
}

.page-disclaimer .usage-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 9px;
  height: 9px;
  background: var(--coral-500);
  clip-path: polygon(0 0, 100% 50%, 0 100%);
}

.page-disclaimer .usage-link {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(45, 226, 230, 0.45);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-disclaimer .usage-link:hover,
.page-disclaimer .usage-link:focus-visible {
  color: var(--coral-300);
  border-bottom-color: var(--coral-300);
}

/* ---------- 右侧窄栏 ---------- */
.page-disclaimer .usage-rail {
  order: -1;
  padding: clamp(14px, 2vw, 20px);
  background: rgba(11, 47, 56, 0.62);
  border: 1px solid var(--line);
  border-radius: 2px;
}

.page-disclaimer .usage-rail-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--tide-300);
}

.page-disclaimer .usage-toc {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-disclaimer .usage-toc li {
  flex: 0 0 auto;
}

.page-disclaimer .usage-toc-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13.5px;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-disclaimer .usage-toc-link:hover,
.page-disclaimer .usage-toc-link:focus-visible {
  color: var(--mist-050);
  border-color: var(--cyan-400);
  background: rgba(45, 226, 230, 0.08);
}

.page-disclaimer .usage-toc-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--coral-500);
}

.page-disclaimer .usage-rail-block--links {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed var(--line-strong);
}

.page-disclaimer .usage-rail-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-disclaimer .usage-rail-link {
  display: inline-block;
  padding: 5px 10px;
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-disclaimer .usage-rail-link:hover,
.page-disclaimer .usage-rail-link:focus-visible {
  color: var(--cyan-400);
  border-bottom-color: var(--cyan-400);
}

/* ---------- 断点 ---------- */
@media (min-width: 900px) {
  .page-disclaimer .usage-hero-grid {
    grid-template-columns: minmax(0, 6.4fr) minmax(0, 5fr);
    gap: var(--usage-gap);
  }

  .page-disclaimer .usage-hero-figure {
    transform: rotate(-1.1deg);
  }
}

@media (min-width: 980px) {
  .page-disclaimer .usage-body {
    grid-template-columns: minmax(0, 1fr) var(--usage-rail-w);
  }

  .page-disclaimer .usage-rail {
    order: 0;
    position: sticky;
    top: calc(var(--header-h) + 16px);
  }

  .page-disclaimer .usage-toc {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-disclaimer .usage-toc li + li {
    margin-top: 6px;
  }

  .page-disclaimer .usage-toc-link {
    display: flex;
    width: 100%;
    box-sizing: border-box;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .usage-hero-figure {
    transform: none;
  }

  .page-disclaimer .usage-clause-num,
  .page-disclaimer .usage-hero-tag {
    transform: none;
  }

  .page-disclaimer .usage-link,
  .page-disclaimer .usage-toc-link,
  .page-disclaimer .usage-rail-link {
    transition: none;
  }
}
<<<END>>>
```