/* ==========================================================
   使用说明 /usage/
   作用域：.page-disclaimer
   ========================================================== */

.page-disclaimer {
  --clause-pad-y: clamp(28px, 4vw, 44px);
  --clause-gutter: 20px;

  display: block;
  position: relative;
  background-color: var(--night);
  color: var(--mist);
  font-family: var(--font-body);
}

/* ---------- 面包屑 ---------- */
.page-disclaimer .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: clamp(24px, 4vw, 40px);
  font-size: 13px;
}

.page-disclaimer .breadcrumbs__item {
  color: var(--mist);
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.page-disclaimer a.breadcrumbs__item:hover {
  color: var(--gold);
}

.page-disclaimer .breadcrumbs__item[aria-current="page"] {
  color: var(--gold);
}

.page-disclaimer .breadcrumbs__sep {
  color: var(--sand);
}

/* ---------- 首屏 ---------- */
.page-disclaimer .usage-hero {
  position: relative;
  padding: calc(var(--header-h) + clamp(36px, 6vw, 72px)) 0 clamp(26px, 4vw, 40px);
  overflow: hidden;
  isolation: isolate;
}

.page-disclaimer .usage-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  left: -12%;
  right: -12%;
  height: 160%;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(50% 58% at 14% 12%, rgba(242, 193, 78, 0.15), transparent 62%),
    radial-gradient(44% 54% at 88% 4%, rgba(226, 62, 140, 0.13), transparent 66%),
    radial-gradient(58% 66% at 52% 108%, rgba(127, 212, 255, 0.07), transparent 72%);
}

.page-disclaimer .usage-hero__grid {
  display: grid;
  gap: 30px;
}

.page-disclaimer .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--gold);
}

.page-disclaimer .usage-hero h1 {
  margin: 14px 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(40px, 9vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.03em;
  color: var(--white);
}

.page-disclaimer .usage-hero__lede {
  margin: 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.85;
  color: var(--mist);
}

/* 首屏数据条 */
.page-disclaimer .usage-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(104px, 1fr));
  gap: 1px;
  background-color: var(--line-cool);
  border: 1px solid var(--line-cool);
}

.page-disclaimer .stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 16px 14px;
  background-color: rgba(19, 28, 60, 0.72);
}

.page-disclaimer .stat__value {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 600;
  line-height: 1.1;
  color: var(--gold);
}

.page-disclaimer .stat__label {
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--mist);
}

/* ---------- 顶部横幅 ---------- */
.page-disclaimer .usage-banner {
  position: relative;
  margin: 0 0 clamp(36px, 6vw, 64px);
  border: 1px solid var(--line-cool);
  background-color: var(--abyss);
  overflow: hidden;
}

.page-disclaimer .usage-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 5;
  object-fit: cover;
  opacity: 0.84;
}

.page-disclaimer .usage-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(10, 18, 48, 0.18) 0%, rgba(10, 18, 48, 0.74) 100%);
}

/* ---------- 正文骨架 ---------- */
.page-disclaimer .usage-body {
  padding-bottom: clamp(36px, 5vw, 64px);
}

/* ---------- 条款目录 ---------- */
.page-disclaimer .usage-index {
  margin-bottom: 30px;
  border: 1px solid var(--line-cool);
  border-top: 2px solid var(--gold);
  background: linear-gradient(165deg, rgba(19, 28, 60, 0.92) 0%, rgba(5, 10, 28, 0.92) 100%);
}

.page-disclaimer .usage-index__title {
  margin: 0;
  padding: 16px 18px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold);
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .usage-index .toc {
  margin: 0;
  padding: 6px 0 10px;
  list-style: none;
}

.page-disclaimer .toc__item {
  display: block;
}

.page-disclaimer .usage-index .toc__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 18px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--mist);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease),
    border-color 0.2s var(--ease);
}

.page-disclaimer .usage-index .toc__link:hover {
  color: var(--white);
  background-color: rgba(242, 193, 78, 0.07);
}

.page-disclaimer .usage-index .toc__link.is-active,
.page-disclaimer .usage-index .toc__link[aria-current="true"] {
  color: var(--gold);
  border-left-color: var(--gold);
  background-color: rgba(242, 193, 78, 0.1);
}

.page-disclaimer .toc__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--sand);
}

.page-disclaimer .usage-index .toc__link.is-active .toc__num,
.page-disclaimer .usage-index .toc__link[aria-current="true"] .toc__num {
  color: var(--gold-light);
}

/* ---------- 条款条目 ---------- */
.page-disclaimer .clause {
  position: relative;
  padding: var(--clause-pad-y) 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-disclaimer .clause__no {
  display: block;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-disclaimer .clause__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3vw, 28px);
  line-height: 1.35;
  letter-spacing: -0.015em;
  color: var(--white);
}

.page-disclaimer .clause__point {
  margin: 0 0 12px;
  max-width: 58ch;
  font-size: clamp(15.5px, 1.7vw, 17px);
  font-weight: 600;
  line-height: 1.8;
  color: var(--white);
}

.page-disclaimer .clause__note {
  margin: 0 0 12px;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist);
}

.page-disclaimer .clause__note a {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(127, 212, 255, 0.38);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-disclaimer .clause__note a:hover {
  color: var(--gold-light);
  border-bottom-color: var(--gold-light);
}

.page-disclaimer .clause__list {
  margin: 20px 0 12px;
  padding: 0;
  max-width: 58ch;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-disclaimer .clause__list > li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-disclaimer .clause__list > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.9em;
  width: 9px;
  height: 1px;
  background-color: var(--gold);
}

.page-disclaimer .clause__list a {
  color: var(--ice);
  text-decoration: none;
  border-bottom: 1px solid rgba(127, 212, 255, 0.38);
}

.page-disclaimer .clause__list a:hover {
  color: var(--gold-light);
  border-bottom-color: var(--gold-light);
}

.page-disclaimer .clause .accordion {
  margin-top: 20px;
  max-width: 58ch;
}

/* ---------- 收尾 ---------- */
.page-disclaimer .usage-outro {
  border-top: 1px solid var(--line);
  padding: clamp(44px, 7vw, 76px) 0;
  background: linear-gradient(180deg, rgba(19, 28, 60, 0.5) 0%, rgba(5, 10, 28, 0.94) 100%);
}

.page-disclaimer .usage-outro__inner {
  display: grid;
  gap: 18px;
}

.page-disclaimer .usage-outro h2 {
  margin: 0;
  max-width: 24ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.6vw, 34px);
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-disclaimer .usage-outro p {
  margin: 0;
  max-width: 52ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-disclaimer .usage-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 4px;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 720px) {
  .page-disclaimer .clause {
    display: grid;
    grid-template-columns: 72px minmax(0, 1fr);
    column-gap: var(--clause-gutter);
  }

  .page-disclaimer .clause__no {
    grid-column: 1;
    margin: 0;
    padding-top: 8px;
  }

  .page-disclaimer .clause__title,
  .page-disclaimer .clause__point,
  .page-disclaimer .clause__note,
  .page-disclaimer .clause__list,
  .page-disclaimer .clause .accordion {
    grid-column: 2;
  }

  .page-disclaimer .usage-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
    gap: 48px;
    align-items: end;
  }
}

/* ---------- 宽屏：目录吸顶跟随 ---------- */
@media (min-width: 980px) {
  .page-disclaimer .usage-body {
    display: grid;
    grid-template-columns: 232px minmax(0, 1fr);
    column-gap: 48px;
    align-items: start;
  }

  .page-disclaimer .usage-index {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    margin-bottom: 0;
  }

  .page-disclaimer .clause {
    grid-template-columns: 88px minmax(0, 1fr);
    column-gap: 24px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .usage-index .toc__link,
  .page-disclaimer .clause__note a,
  .page-disclaimer .breadcrumbs__item {
    transition: none;
  }
}
<<<END>>>