.page-disclaimer {
  --usage-line-soft: rgba(169, 188, 203, .14);
  --usage-cyan-a: rgba(47, 227, 210, .08);
  --usage-cyan-b: rgba(47, 227, 210, .22);
  --usage-num-col: 64px;
}

/* ---------- 首屏 ---------- */
.page-disclaimer .usage-hero {
  position: relative;
  padding: 32px 0 64px;
  overflow: hidden;
}

.page-disclaimer .usage-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -10%;
  width: min(760px, 90vw);
  height: min(760px, 90vw);
  background:
    radial-gradient(circle at 40% 40%, rgba(47, 227, 210, .14), transparent 62%),
    radial-gradient(circle at 74% 22%, rgba(255, 107, 74, .09), transparent 58%);
  pointer-events: none;
}

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

.page-disclaimer .usage-hero__grid {
  display: grid;
  gap: 36px;
  margin-top: 28px;
}

.page-disclaimer .usage-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6vw, 56px);
  line-height: 1.04;
  letter-spacing: -.02em;
  color: #fff;
  margin: 10px 0 18px;
  text-wrap: balance;
}

.page-disclaimer .usage-hero__lede {
  color: var(--slate-300);
  max-width: 54ch;
}

.page-disclaimer .usage-hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-disclaimer .usage-hero__media {
  margin: 0;
  border-radius: var(--r-lg);
  border: 1px solid var(--steel-500);
  background: var(--ink-700);
  overflow: hidden;
}

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

/* ---------- 正文两栏 ---------- */
.page-disclaimer .usage-body__grid {
  display: grid;
  gap: 30px;
}

.page-disclaimer .usage-toc__label {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--slate-300);
}

.page-disclaimer .usage-toc__list {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

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

.page-disclaimer .usage-toc__list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--steel-500);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  color: var(--slate-300);
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-disclaimer .usage-toc__list a .num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan-400);
}

.page-disclaimer .usage-toc__list a:hover,
.page-disclaimer .usage-toc__list a:focus-visible {
  color: #fff;
  border-color: var(--cyan-600);
}

/* ---------- 条款块 ---------- */
.page-disclaimer .usage-main {
  min-width: 0;
}

.page-disclaimer .usage-clause {
  scroll-margin-top: 96px;
}

.page-disclaimer .usage-clause + .usage-clause {
  margin-top: 56px;
}

.page-disclaimer .usage-clause__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.page-disclaimer .usage-clause__head::before {
  content: "";
  display: block;
  width: 28px;
  height: 3px;
  border-radius: 2px;
  background: var(--cyan-400);
}

.page-disclaimer .usage-clause__title {
  margin: 0;
  font-size: clamp(21px, 3vw, 28px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -.01em;
  color: #fff;
}

.page-disclaimer .usage-clause__intro {
  margin: 0 0 18px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--slate-300);
}

.page-disclaimer .usage-clause__note {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate-300);
}

.page-disclaimer .usage-clause__note a,
.page-disclaimer .clause-item__text a {
  color: var(--cyan-400);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

/* ---------- 条目列表 ---------- */
.page-disclaimer .clause-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--usage-line-soft);
}

.page-disclaimer .clause-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 0 12px;
  padding: 18px 0;
  border-bottom: 1px solid var(--usage-line-soft);
}

.page-disclaimer .clause-item__num {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .04em;
  line-height: 1.7;
  color: var(--cyan-400);
  padding-top: 2px;
}

.page-disclaimer .clause-item__title {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: #fff;
}

.page-disclaimer .clause-item__text {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--slate-300);
}

/* ---------- 结尾色带 ---------- */
.page-disclaimer .usage-cta {
  margin-top: 72px;
  padding: 44px 0;
  background: var(--usage-cyan-a);
  border-top: 1px solid var(--usage-cyan-b);
  border-bottom: 1px solid var(--usage-cyan-b);
}

.page-disclaimer .usage-cta__inner {
  display: grid;
  gap: 22px;
}

.page-disclaimer .usage-cta__title {
  margin: 0 0 8px;
  font-size: clamp(20px, 2.8vw, 26px);
  font-weight: 800;
  line-height: 1.3;
  color: #fff;
}

.page-disclaimer .usage-cta__text {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--slate-300);
}

.page-disclaimer .usage-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 760px) {
  .page-disclaimer .usage-hero {
    padding: 44px 0 80px;
  }

  .page-disclaimer .clause-item {
    grid-template-columns: var(--usage-num-col) minmax(0, 1fr);
    gap: 0 20px;
    padding: 20px 0;
  }

  .page-disclaimer .clause-item__num {
    font-size: 16px;
  }

  .page-disclaimer .usage-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 40px;
  }
}

/* ---------- 桌面：左侧目录跟随 ---------- */
@media (min-width: 1000px) {
  .page-disclaimer .usage-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: center;
    gap: 56px;
    margin-top: 36px;
  }

  .page-disclaimer .usage-body__grid {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 64px;
    align-items: start;
  }

  .page-disclaimer .usage-toc {
    position: sticky;
    top: 96px;
  }

  .page-disclaimer .usage-toc__list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
    border-left: 2px solid var(--steel-500);
  }

  .page-disclaimer .usage-toc__list li {
    flex: 0 0 auto;
    width: 100%;
  }

  .page-disclaimer .usage-toc__list a {
    width: 100%;
    padding: 10px 0 10px 16px;
    margin-left: -2px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    white-space: normal;
  }

  .page-disclaimer .usage-toc__list a:hover,
  .page-disclaimer .usage-toc__list a:focus-visible {
    border-left-color: var(--cyan-400);
    color: #fff;
  }
}

/* ---------- 打印 ---------- */
@media print {
  .page-disclaimer .usage-hero::before,
  .page-disclaimer .usage-hero__media,
  .page-disclaimer .usage-toc,
  .page-disclaimer .usage-hero__links,
  .page-disclaimer .usage-cta__actions {
    display: none !important;
  }

  .page-disclaimer .usage-body__grid {
    display: block;
  }

  .page-disclaimer .usage-clause__title,
  .page-disclaimer .clause-item__title,
  .page-disclaimer .usage-cta__title {
    color: #071523;
  }

  .page-disclaimer .usage-clause__intro,
  .page-disclaimer .clause-item__text,
  .page-disclaimer .usage-clause__note,
  .page-disclaimer .usage-cta__text {
    color: #1B3A54;
  }

  .page-disclaimer .clause-item,
  .page-disclaimer .clause-list {
    border-color: #A9BCCB;
    break-inside: avoid;
  }

  .page-disclaimer .usage-cta {
    background: transparent;
    border-color: #A9BCCB;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .usage-toc__list a {
    transition: none;
  }
}
<<<END>>>