.page-disclaimer{
  --usage-gap: clamp(20px, 4vw, 44px);
  --usage-ink: var(--seed);
  --usage-muted: var(--ink-soft);
  background: var(--milk);
  color: var(--usage-ink);
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */
.page-disclaimer .usage-hero{
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--char);
  color: var(--milk);
  padding: clamp(96px, 15vw, 152px) 0 clamp(40px, 7vw, 72px);
}

.page-disclaimer .usage-hero__bg{
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 40%;
  opacity: .3;
}

.page-disclaimer .usage-hero::after{
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(102deg, rgba(15,15,15,.95) 0%, rgba(27,27,27,.78) 46%, rgba(126,211,33,.22) 100%);
}

.page-disclaimer .usage-crumb{
  margin-bottom: clamp(20px, 4vw, 34px);
}

.page-disclaimer .usage-crumb__list{
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
}

.page-disclaimer .usage-crumb__link{
  color: rgba(244,247,239,.72);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-disclaimer .usage-crumb__link:hover,
.page-disclaimer .usage-crumb__link:focus-visible{
  color: var(--glow);
  border-bottom-color: var(--glow);
}

.page-disclaimer .usage-crumb__sep{
  color: rgba(244,247,239,.4);
}

.page-disclaimer .usage-crumb__item--current{
  color: var(--glow);
}

.page-disclaimer .usage-kicker{
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--glow);
}

.page-disclaimer .usage-kicker--dark{
  color: var(--leaf);
}

.page-disclaimer .usage-hero__grid{
  display: grid;
  gap: clamp(24px, 5vw, 48px);
}

.page-disclaimer .usage-hero__title{
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(30px, 6.2vw, 60px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--paper);
  max-width: 18em;
}

.page-disclaimer .usage-hero__lead{
  margin: 0;
  max-width: 34em;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
  color: rgba(244,247,239,.84);
}

/* ---------- 条款索引 ---------- */
.page-disclaimer .usage-toc{
  border: 1px solid rgba(198,255,61,.3);
  border-radius: var(--radius-peel);
  background: rgba(244,247,239,.06);
  padding: 18px 18px 10px;
}

.page-disclaimer .usage-toc__title{
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--glow);
}

.page-disclaimer .usage-toc__list{
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .usage-toc__link{
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 10px 6px;
  border-bottom: 1px solid rgba(244,247,239,.14);
  border-radius: 8px;
  color: var(--milk);
  font-size: 15px;
  text-decoration: none;
  transition: color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-disclaimer .usage-toc__item:last-child .usage-toc__link{
  border-bottom: 0;
}

.page-disclaimer .usage-toc__link:hover,
.page-disclaimer .usage-toc__link:focus-visible{
  color: var(--glow);
  background: rgba(198,255,61,.1);
}

.page-disclaimer .usage-toc__num{
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--glow);
}

/* ---------- 条款正文 ---------- */
.page-disclaimer .usage-section{
  padding: clamp(40px, 7vw, 76px) 0;
  background: var(--milk);
  scroll-margin-top: 100px;
}

.page-disclaimer .usage-section--paper{
  background: var(--paper);
}

.page-disclaimer .usage-section__grid{
  display: grid;
  gap: clamp(20px, 4vw, 40px);
}

.page-disclaimer .usage-section__head h2{
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.6vw, 38px);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--seed);
}

.page-disclaimer .usage-section__aside{
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--usage-muted);
  padding-left: 14px;
  border-left: 3px solid var(--flesh);
}

.page-disclaimer .usage-clause{
  display: grid;
  gap: 8px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .usage-clause:first-child{
  padding-top: 0;
}

.page-disclaimer .usage-clause:last-child{
  border-bottom: 0;
  padding-bottom: 0;
}

.page-disclaimer .usage-clause__num{
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--leaf);
  line-height: 1.4;
}

.page-disclaimer .usage-clause h3{
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(17px, 2vw, 21px);
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--seed);
}

.page-disclaimer .usage-clause p{
  margin: 0;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--usage-muted);
}

.page-disclaimer .usage-clause a{
  color: var(--leaf);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-disclaimer .usage-clause a:hover,
.page-disclaimer .usage-clause a:focus-visible{
  color: var(--seed);
  text-decoration-color: var(--flesh);
  text-decoration-thickness: 2px;
}

/* ---------- 棕褐提示带 ---------- */
.page-disclaimer .usage-note{
  background: var(--skin);
  color: var(--paper);
  padding: clamp(28px, 5vw, 46px) 0;
}

.page-disclaimer .usage-note__inner{
  display: grid;
  gap: 10px;
}

.page-disclaimer .usage-note__tag{
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--glow);
}

.page-disclaimer .usage-note__text{
  margin: 0;
  max-width: 40em;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.6vw, 26px);
  font-weight: 800;
  line-height: 1.42;
  letter-spacing: -.01em;
  color: var(--paper);
}

/* ---------- 页尾导航 ---------- */
.page-disclaimer .usage-footer{
  padding: clamp(36px, 6vw, 64px) 0 clamp(48px, 7vw, 82px);
  background: var(--milk);
}

.page-disclaimer .usage-footer__title{
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(21px, 2.8vw, 30px);
  font-weight: 900;
  letter-spacing: -.02em;
  line-height: 1.24;
  color: var(--seed);
}

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

.page-disclaimer .usage-pills__item{
  margin: 0;
}

.page-disclaimer .usage-pill{
  display: inline-flex;
  align-items: center;
  padding: 10px 20px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--paper);
  color: var(--seed);
  font-size: 15px;
  line-height: 1.2;
  text-decoration: none;
  transition: background-color 180ms var(--ease), border-color 180ms var(--ease), transform 180ms var(--ease), color 180ms var(--ease);
}

.page-disclaimer .usage-pill:hover,
.page-disclaimer .usage-pill:focus-visible{
  background: var(--glow);
  border-color: var(--glow);
  color: var(--seed);
  transform: translateY(-2px);
}

.page-disclaimer .usage-pill:focus-visible{
  outline: 2px solid var(--glow);
  outline-offset: 3px;
}

.page-disclaimer .usage-pill--back{
  background: var(--seed);
  border-color: var(--seed);
  color: var(--milk);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
}

.page-disclaimer .usage-pill--back:hover,
.page-disclaimer .usage-pill--back:focus-visible{
  background: var(--flesh);
  border-color: var(--flesh);
  color: var(--seed);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px){
  .page-disclaimer .usage-clause{
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 18px;
    align-items: start;
  }

  .page-disclaimer .usage-clause__num{
    padding-top: 4px;
  }

  .page-disclaimer .usage-note__inner{
    grid-template-columns: 140px minmax(0, 1fr);
    align-items: center;
    gap: 24px;
  }
}

@media (min-width: 900px){
  .page-disclaimer .usage-hero__grid{
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-disclaimer .usage-section__grid{
    grid-template-columns: minmax(0, 3fr) minmax(0, 7fr);
    gap: clamp(32px, 5vw, 72px);
    align-items: start;
  }

  .page-disclaimer .usage-section__head{
    position: sticky;
    top: 108px;
  }

  .page-disclaimer .usage-toc{
    padding: 22px 22px 12px;
  }
}

@media (prefers-reduced-motion: reduce){
  .page-disclaimer .usage-pill,
  .page-disclaimer .usage-toc__link,
  .page-disclaimer .usage-crumb__link{
    transition: none;
  }

  .page-disclaimer .usage-pill:hover,
  .page-disclaimer .usage-pill:focus-visible{
    transform: none;
  }
}