.page-disclaimer {
  --clause-num-w: 92px;
  --mark-accent: var(--neon);
  position: relative;
  display: block;
}

/* ---------- 首屏 ---------- */

.page-disclaimer .usage-hero {
  position: relative;
  padding: clamp(22px, 4vw, 44px) 0 clamp(30px, 5vw, 58px);
  overflow: hidden;
}

.page-disclaimer .usage-hero::before {
  content: "";
  position: absolute;
  top: -42%;
  right: -18%;
  width: min(760px, 96vw);
  height: min(760px, 96vw);
  background:
    radial-gradient(circle at 34% 34%, rgba(108, 75, 255, 0.32), transparent 62%),
    radial-gradient(circle at 72% 62%, rgba(53, 230, 210, 0.16), transparent 60%);
  filter: blur(12px);
  pointer-events: none;
  z-index: 0;
}

.page-disclaimer .usage-hero .shell {
  position: relative;
  z-index: 1;
}

.page-disclaimer .usage-hero__grid {
  display: grid;
  gap: clamp(18px, 3vw, 34px);
  align-items: end;
  margin-top: clamp(18px, 3vw, 28px);
}

.page-disclaimer .usage-hero__title {
  font-size: clamp(2.4rem, 8vw, 5rem);
  line-height: 1;
  margin: 10px 0 0;
  color: var(--ivory);
  letter-spacing: 0.01em;
}

.page-disclaimer .usage-hero__title::after {
  content: "";
  display: block;
  width: clamp(72px, 18vw, 156px);
  height: 4px;
  margin-top: 22px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--neon), var(--cyan));
}

.page-disclaimer .usage-hero__aside .lede {
  margin: 0;
}

.page-disclaimer .usage-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-disclaimer .usage-hero__media {
  margin: clamp(28px, 4vw, 46px) 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--ember);
  background: var(--night);
}

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

/* ---------- 条款目录 ---------- */

.page-disclaimer .usage-toc {
  padding: clamp(20px, 3vw, 30px) 0;
  border-top: 1px solid var(--ember);
  border-bottom: 1px solid var(--ember);
  background: linear-gradient(90deg, rgba(11, 18, 38, 0.72), rgba(5, 6, 14, 0));
}

.page-disclaimer .usage-toc__label {
  margin: 0 0 14px;
  color: var(--mist);
  font-size: var(--fs-12);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.page-disclaimer .toc-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .toc-list a {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--ember);
  border-radius: 999px;
  color: var(--ivory);
  font-size: var(--fs-14);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-disclaimer .toc-list a:hover,
.page-disclaimer .toc-list a:focus-visible {
  border-color: var(--neon);
  color: var(--cyan);
  background: rgba(108, 75, 255, 0.14);
}

.page-disclaimer .toc-list__num {
  font-family: var(--mono);
  font-size: var(--fs-12);
  letter-spacing: 0.08em;
  color: var(--gold);
}

/* ---------- 条款主体 ---------- */

.page-disclaimer .usage-clauses {
  padding: clamp(8px, 1.6vw, 18px) 0 0;
}

.page-disclaimer .usage-clauses--tail {
  padding: 0;
}

.page-disclaimer .clause {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 10px 16px;
  padding: clamp(26px, 3.6vw, 44px) 0;
  border-top: 1px solid var(--ember);
  scroll-margin-top: 130px;
}

.page-disclaimer .clause:last-child {
  border-bottom: 1px solid var(--ember);
}

.page-disclaimer .clause__num {
  font-family: var(--mono);
  font-size: clamp(1.4rem, 3.2vw, 2.4rem);
  font-weight: 300;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--gold);
  padding-top: 6px;
}

.page-disclaimer .clause__title {
  margin: 0 0 14px;
  font-size: clamp(1.22rem, 2.4vw, 1.7rem);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: 0.01em;
  color: var(--ivory);
}

.page-disclaimer .clause__body p {
  margin: 0 0 14px;
  max-width: 66ch;
  color: var(--mist);
  line-height: 1.78;
}

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

.page-disclaimer .clause__list {
  display: grid;
  gap: 10px;
  margin: 0 0 16px;
  padding: 0;
  max-width: 66ch;
  list-style: none;
}

.page-disclaimer .clause__list li {
  position: relative;
  padding-left: 22px;
  color: var(--mist);
  line-height: 1.72;
}

.page-disclaimer .clause__list li::before {
  content: "";
  position: absolute;
  left: 1px;
  top: 0.68em;
  width: 8px;
  height: 8px;
  border-radius: 1px;
  background: var(--cyan);
  transform: rotate(45deg);
  opacity: 0.88;
}

.page-disclaimer .clause__note {
  font-size: var(--fs-14);
  border-left: 2px solid var(--ember);
  padding-left: 14px;
  color: var(--mist);
}

.page-disclaimer .clause__body a {
  color: var(--haze);
  text-decoration: none;
  border-bottom: 1px solid rgba(167, 139, 250, 0.42);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-disclaimer .clause__body a:hover,
.page-disclaimer .clause__body a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-disclaimer .clause__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

/* ---------- 标识示例带 ---------- */

.page-disclaimer .usage-marks {
  position: relative;
  margin: clamp(14px, 2.4vw, 28px) 0;
  padding: clamp(38px, 6vw, 74px) 0 clamp(44px, 6vw, 78px);
  border-top: 1px solid var(--ember);
  border-bottom: 1px solid var(--ember);
  background:
    radial-gradient(circle at 84% 8%, rgba(53, 230, 210, 0.14), transparent 56%),
    radial-gradient(circle at 8% 92%, rgba(108, 75, 255, 0.22), transparent 58%),
    linear-gradient(150deg, rgba(11, 18, 38, 0.96), rgba(5, 6, 14, 0.96));
  overflow: hidden;
}

.page-disclaimer .usage-marks::after {
  content: "";
  position: absolute;
  left: -8%;
  right: -8%;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon), transparent);
  opacity: 0.6;
}

.page-disclaimer .usage-marks__lede {
  max-width: 54ch;
}

.page-disclaimer .mark-band {
  display: grid;
  gap: 16px;
  margin-top: clamp(24px, 3.4vw, 38px);
  grid-template-columns: 1fr;
}

.page-disclaimer .mark-card {
  position: relative;
  padding: 26px 22px 28px;
  border: 1px solid var(--ember);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(21, 28, 56, 0.92), rgba(11, 18, 38, 0.68));
  transform-origin: center top;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-disclaimer .mark-card::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 0;
  width: 46px;
  height: 3px;
  border-radius: 3px;
  background: var(--mark-accent);
}

.page-disclaimer .mark-card--gold { --mark-accent: var(--gold); }
.page-disclaimer .mark-card--cyan { --mark-accent: var(--cyan); }
.page-disclaimer .mark-card--pulse { --mark-accent: var(--pulse); }

.page-disclaimer .mark-card:hover,
.page-disclaimer .mark-card:focus-within {
  transform: scale(1.05) translateY(-4px);
  border-color: var(--neon);
  box-shadow: 0 26px 54px -30px rgba(108, 75, 255, 0.92);
}

.page-disclaimer .mark-card__title {
  margin: 16px 0 8px;
  font-size: var(--fs-20);
  line-height: 1.4;
  color: var(--ivory);
}

.page-disclaimer .mark-card p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 回到顶部 ---------- */

.page-disclaimer .to-top {
  position: fixed;
  right: clamp(16px, 3vw, 32px);
  bottom: clamp(16px, 3vw, 32px);
  z-index: 40;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--ember);
  border-radius: 999px;
  background: rgba(11, 18, 38, 0.88);
  color: var(--mist);
  font-family: var(--mono);
  font-size: var(--fs-12);
  letter-spacing: 0.1em;
  text-decoration: none;
  backdrop-filter: blur(10px);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-disclaimer .to-top:hover,
.page-disclaimer .to-top:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-disclaimer .mark-band {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
    align-items: start;
  }

  .page-disclaimer .mark-card:nth-child(2) {
    margin-top: 24px;
  }

  .page-disclaimer .mark-card:nth-child(3) {
    margin-top: 48px;
  }
}

@media (min-width: 760px) {
  .page-disclaimer .clause {
    grid-template-columns: var(--clause-num-w) minmax(0, 1fr);
    gap: 0 clamp(24px, 4vw, 48px);
  }
}

@media (min-width: 900px) {
  .page-disclaimer .usage-hero__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-disclaimer .usage-hero__aside {
    padding-bottom: 10px;
  }
}

@media (max-width: 540px) {
  .page-disclaimer .usage-hero__title::after {
    margin-top: 16px;
  }

  .page-disclaimer .toc-list a {
    width: 100%;
    justify-content: flex-start;
  }

  .page-disclaimer .to-top {
    padding: 0 14px;
    font-size: 11px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .mark-card,
  .page-disclaimer .mark-card:hover,
  .page-disclaimer .mark-card:focus-within {
    transform: none;
    transition: border-color var(--dur) var(--ease);
  }
}
<<<END>>>