.page-disclaimer {
  --legal-measure: 70ch;
  --legal-rule: rgba(20, 59, 94, 0.16);
  display: block;
  scroll-margin-top: 90px;
}

/* ---------- 首屏 ---------- */
.page-disclaimer .legal-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink-900);
  padding: clamp(26px, 6vw, 68px) 0 clamp(38px, 7vw, 92px);
  border-bottom-left-radius: var(--radius-lg);
  border-bottom-right-radius: var(--radius-lg);
}

.page-disclaimer .legal-hero__bg {
  position: absolute;
  inset: 0;
  opacity: 0.34;
  pointer-events: none;
}

.page-disclaimer .legal-hero__bg img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  object-position: center;
}

.page-disclaimer .legal-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(165deg, rgba(6, 23, 38, 0.5) 0%, rgba(6, 23, 38, 0.94) 72%);
  pointer-events: none;
}

.page-disclaimer .legal-hero__inner {
  position: relative;
  z-index: 1;
}

.page-disclaimer .legal-hero .eyebrow {
  margin: 22px 0 0;
  color: var(--sand-500);
}

.page-disclaimer .legal-hero h1 {
  margin: 12px 0 0;
  max-width: 22ch;
  font-size: clamp(1.9rem, 6vw, 3.5rem);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper-50);
}

.page-disclaimer .legal-hero__lede {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: var(--step-17);
  line-height: 1.85;
  color: var(--mist-200);
}

.page-disclaimer .legal-hero__meta {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 26px 0 0;
  padding: 8px 18px;
  border: 1px solid var(--line-sand);
  border-radius: var(--radius-pill);
  background: rgba(224, 177, 94, 0.09);
  color: var(--sand-200);
  font-size: var(--step-12);
  letter-spacing: 0.06em;
}

/* ---------- 浅底阅读区 ---------- */
.page-disclaimer .legal-shell {
  background: var(--paper-50);
  color: var(--ink-900);
  padding: clamp(38px, 7vw, 96px) 0 clamp(56px, 9vw, 128px);
}

.page-disclaimer .legal-flow {
  max-width: 920px;
  margin: 0 auto;
}

/* ---------- 条款 ---------- */
.page-disclaimer .clause {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: clamp(26px, 4vw, 46px) 0;
  border-top: 1px solid var(--legal-rule);
}

.page-disclaimer .clause:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.page-disclaimer .clause__index {
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 5vw, 3.2rem);
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--sand-500);
  text-align: left;
  opacity: 0.9;
}

.page-disclaimer .clause__body {
  min-width: 0;
}

.page-disclaimer .clause__body h2 {
  scroll-margin-top: 100px;
  margin: 0;
  font-size: clamp(1.3rem, 3.4vw, 1.85rem);
  font-weight: 900;
  line-height: 1.32;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-disclaimer .clause__anchor {
  display: inline-block;
  margin-left: 10px;
  font-family: var(--font-mono);
  font-size: 0.62em;
  font-weight: 400;
  color: var(--slate-500);
  text-decoration: none;
  vertical-align: 0.18em;
  transition: color 180ms var(--ease-out);
}

.page-disclaimer .clause__anchor:hover,
.page-disclaimer .clause__anchor:focus-visible {
  color: var(--sand-500);
}

.page-disclaimer .clause__body p {
  max-width: var(--legal-measure);
  margin: 14px 0 0;
  font-size: var(--step-17);
  line-height: 1.85;
  color: var(--ink-700);
}

.page-disclaimer .clause__body p.clause__lead {
  margin-top: 16px;
  padding-left: 16px;
  border-left: 3px solid var(--sand-500);
  font-weight: 500;
  color: var(--cabin-500);
}

.page-disclaimer .clause__body a {
  color: var(--cabin-500);
  text-decoration-color: var(--sand-500);
  text-underline-offset: 3px;
}

.page-disclaimer .clause__body a:hover,
.page-disclaimer .clause__body a:focus-visible {
  color: var(--ink-900);
  text-decoration-color: var(--sand-500);
}

/* ---------- 使用情形 ---------- */
.page-disclaimer .usecases {
  display: grid;
  gap: 14px;
  margin: 24px 0 0;
}

.page-disclaimer .usecase {
  padding: 20px 22px;
  border: 1px solid var(--legal-rule);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.66);
  transition: border-color 180ms var(--ease-out), transform 180ms var(--ease-out);
}

.page-disclaimer .usecase:hover {
  border-color: var(--line-sand);
  transform: translateY(-2px);
}

.page-disclaimer .usecase__title {
  margin: 0;
  font-size: var(--step-17);
  font-weight: 900;
  line-height: 1.4;
  color: var(--ink-900);
}

.page-disclaimer .usecase p {
  margin: 10px 0 0;
  max-width: none;
  font-size: var(--step-14);
  line-height: 1.8;
  color: var(--ink-700);
}

.page-disclaimer .usecase a {
  color: var(--cabin-500);
  text-decoration-color: var(--sand-500);
  text-underline-offset: 3px;
  word-break: break-word;
}

/* ---------- 引用保留卡 ---------- */
.page-disclaimer .cite-card {
  position: relative;
  overflow: hidden;
  margin: clamp(26px, 4vw, 44px) 0;
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid rgba(224, 177, 94, 0.36);
  border-radius: var(--radius-lg);
  background: var(--ink-900);
  color: var(--paper-50);
}

.page-disclaimer .cite-card::before {
  content: "";
  position: absolute;
  top: -70px;
  right: -40px;
  width: 220px;
  height: 220px;
  border: 1px solid rgba(224, 177, 94, 0.35);
  border-radius: 50%;
  pointer-events: none;
}

.page-disclaimer .cite-card__label {
  position: relative;
  margin: 0;
  font-size: var(--step-12);
  letter-spacing: 0.16em;
  color: var(--sand-500);
}

.page-disclaimer .cite-card__title {
  position: relative;
  margin: 12px 0 0;
  font-size: clamp(1.25rem, 3vw, 1.6rem);
  font-weight: 900;
  line-height: 1.35;
  color: var(--paper-50);
}

.page-disclaimer .cite-card__list {
  position: relative;
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-disclaimer .cite-card__list li {
  position: relative;
  padding-left: 26px;
  font-size: var(--step-17);
  line-height: 1.7;
  color: var(--mist-200);
}

.page-disclaimer .cite-card__list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.78em;
  width: 12px;
  height: 2px;
  background: var(--sand-500);
}

.page-disclaimer .cite-card__note {
  position: relative;
  margin: 24px 0 0;
  padding-top: 18px;
  border-top: 1px solid rgba(200, 214, 228, 0.2);
  font-size: var(--step-14);
  line-height: 1.8;
  color: var(--slate-500);
  max-width: 62ch;
}

/* ---------- 术语气泡 ---------- */
.page-disclaimer .term {
  position: relative;
  display: inline-block;
  border-bottom: 1px dashed var(--sand-500);
  color: inherit;
  cursor: help;
}

.page-disclaimer .term:focus {
  outline: 2px solid var(--sand-500);
  outline-offset: 3px;
  border-radius: 3px;
}

.page-disclaimer .term__pop {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 12px);
  z-index: 6;
  width: min(290px, 72vw);
  padding: 12px 15px;
  border: 1px solid var(--line-sand);
  border-radius: var(--radius-sm);
  background: var(--ink-900);
  color: var(--mist-200);
  font-size: var(--step-14);
  font-weight: 400;
  line-height: 1.65;
  text-align: left;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateX(-50%) translateY(6px);
  transition: opacity 180ms var(--ease-out), transform 180ms var(--ease-out), visibility 180ms linear;
}

.page-disclaimer .term:hover .term__pop,
.page-disclaimer .term:focus .term__pop,
.page-disclaimer .term:focus-within .term__pop {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

/* ---------- 回到顶部 ---------- */
.page-disclaimer .to-top {
  position: fixed;
  right: clamp(16px, 4vw, 40px);
  bottom: clamp(16px, 4vw, 36px);
  z-index: 30;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  background: var(--sand-500);
  color: var(--ink-900);
  font-size: var(--step-14);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  box-shadow: 0 12px 30px rgba(6, 23, 38, 0.42);
  transition: background 180ms var(--ease-out), transform 180ms var(--ease-out);
}

.page-disclaimer .to-top:hover {
  background: var(--sand-200);
  transform: translateY(-2px);
}

.page-disclaimer .to-top:focus-visible {
  outline: 2px solid var(--sand-200);
  outline-offset: 3px;
}

@keyframes legalToTopIn {
  from {
    opacity: 0;
    visibility: hidden;
  }
  to {
    opacity: 1;
    visibility: visible;
  }
}

@supports (animation-timeline: scroll()) {
  .page-disclaimer .to-top {
    animation: legalToTopIn linear both;
    animation-timeline: scroll(root block);
    animation-range: 0 85vh;
  }
}

/* ---------- 响应式 ---------- */
@media (min-width: 900px) {
  .page-disclaimer .clause {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 0 clamp(24px, 4vw, 54px);
  }

  .page-disclaimer .clause__index {
    text-align: right;
    padding-top: 2px;
  }
}

@media (min-width: 760px) {
  .page-disclaimer .usecases {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (max-width: 600px) {
  .page-disclaimer .legal-hero {
    border-bottom-left-radius: var(--radius-md);
    border-bottom-right-radius: var(--radius-md);
  }

  .page-disclaimer .clause__body p,
  .page-disclaimer .usecase p,
  .page-disclaimer .cite-card__list li {
    font-size: var(--step-14);
  }

  .page-disclaimer .clause__body p.clause__lead {
    font-size: var(--step-17);
  }

  .page-disclaimer .term__pop {
    left: 0;
    transform: translateX(0) translateY(6px);
  }

  .page-disclaimer .term:hover .term__pop,
  .page-disclaimer .term:focus .term__pop,
  .page-disclaimer .term:focus-within .term__pop {
    transform: translateX(0) translateY(0);
  }
}
<<<END>>>