.page-disclaimer {
  --dc-line: rgba(174, 184, 178, 0.16);
  --dc-line-strong: rgba(201, 169, 106, 0.45);
  --dc-surface: #101715;
  padding-bottom: clamp(48px, 8vw, 96px);
  color: var(--mist);
}

.page-disclaimer .crumbs {
  padding-top: 20px;
  font-size: 12px;
  color: var(--mist-dim);
}

.page-disclaimer .crumbs a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

.page-disclaimer .crumbs a:hover,
.page-disclaimer .crumbs a:focus-visible {
  color: var(--gold);
  border-bottom-color: var(--dc-line-strong);
}

.page-disclaimer .crumbs__sep {
  margin: 0 8px;
  color: var(--rock);
}

/* —— 首屏 —— */
.page-disclaimer .usage-hero {
  display: grid;
  gap: 28px;
  padding: 26px 0 36px;
  border-bottom: 1px solid var(--dc-line);
}

.page-disclaimer .usage-hero__kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-disclaimer .usage-hero h1 {
  margin: 14px 0 0;
  max-width: 18ch;
  font-size: clamp(30px, 6.2vw, 56px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--cream);
}

.page-disclaimer .usage-hero__lead {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: clamp(15px, 2.4vw, 17px);
  line-height: 1.85;
  color: var(--mist);
}

.page-disclaimer .usage-hero__meta {
  margin: 22px 0 0;
  padding: 10px 0;
  border-top: 1px solid var(--dc-line);
  border-bottom: 1px solid var(--dc-line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .05em;
  color: var(--gold);
}

.page-disclaimer .usage-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-disclaimer .usage-hero__fig {
  margin: 0;
  border: 2px solid var(--rock);
  border-radius: var(--radius);
  background: var(--forest);
  overflow: hidden;
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.5);
}

.page-disclaimer .usage-hero__fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* —— 目录轨道 —— */
.page-disclaimer .usage-body {
  padding-top: 6px;
}

.page-disclaimer .usage-toc__title {
  margin: 24px 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--mist-dim);
}

.page-disclaimer .usage-toc__list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  margin: 0;
  padding: 0 0 12px;
  list-style: none;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-disclaimer .usage-toc__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  flex: 0 0 auto;
  padding: 8px 12px;
  border: 1px solid var(--dc-line);
  border-radius: var(--radius);
  background: rgba(31, 74, 59, 0.22);
  color: var(--mist);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}

.page-disclaimer .usage-toc__link:hover,
.page-disclaimer .usage-toc__link:focus-visible {
  border-color: var(--mint);
  color: var(--cream);
  background: rgba(57, 245, 181, 0.08);
}

.page-disclaimer .usage-toc__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gold);
}

/* —— 条款 —— */
.page-disclaimer .usage-clause {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 26px 0;
  border-top: 1px solid var(--dc-line);
  scroll-margin-top: 88px;
}

.page-disclaimer .usage-clause__num {
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--gold);
}

.page-disclaimer .usage-clause h2 {
  margin: 0 0 12px;
  font-size: clamp(19px, 3.2vw, 24px);
  line-height: 1.3;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--cream);
}

.page-disclaimer .usage-clause h2::after {
  content: "";
  display: block;
  width: 46px;
  height: 2px;
  margin-top: 10px;
  background: linear-gradient(90deg, var(--gold), transparent);
}

.page-disclaimer .usage-clause p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist);
}

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

.page-disclaimer .usage-clause strong {
  color: var(--cream);
  font-weight: 600;
}

.page-disclaimer .usage-clause__body a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(57, 245, 181, 0.35);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

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

/* —— 联系块 —— */
.page-disclaimer .usage-contact {
  margin: 18px 0 16px;
  padding: 16px 18px;
  list-style: none;
  display: grid;
  gap: 12px;
  border: 1px solid var(--dc-line);
  border-left: 3px solid var(--gold);
  border-radius: var(--radius);
  background: var(--dc-surface);
}

.page-disclaimer .usage-contact li {
  display: grid;
  gap: 3px;
}

.page-disclaimer .usage-contact__k {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-disclaimer .usage-contact__v {
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--cream);
  word-break: break-word;
}

/* —— 桌面：编号轨道固定 + 右侧条款 —— */
@media (min-width: 900px) {
  .page-disclaimer .usage-hero {
    grid-template-columns: 7fr 5fr;
    align-items: start;
    gap: 48px;
    padding: 44px 0 52px;
  }

  .page-disclaimer .usage-hero__fig {
    margin-top: 10px;
  }
}

@media (min-width: 1024px) {
  .page-disclaimer .usage-body {
    display: grid;
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
    padding-top: 18px;
  }

  .page-disclaimer .usage-toc {
    position: sticky;
    top: 28px;
    align-self: start;
  }

  .page-disclaimer .usage-toc__title {
    margin-top: 16px;
  }

  .page-disclaimer .usage-toc__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
    border-left: 1px solid var(--dc-line);
  }

  .page-disclaimer .usage-toc__link {
    display: flex;
    width: 100%;
    margin-left: -1px;
    padding: 9px 0 9px 14px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: transparent;
    white-space: normal;
    font-size: 13.5px;
  }

  .page-disclaimer .usage-toc__link:hover,
  .page-disclaimer .usage-toc__link:focus-visible {
    border-left-color: var(--mint);
    background: linear-gradient(90deg, rgba(57, 245, 181, 0.1), transparent 72%);
    border-top-color: transparent;
  }

  .page-disclaimer .usage-clause {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 20px;
    padding: 32px 0;
    border-top-color: var(--dc-line);
  }

  .page-disclaimer .usage-clause__num {
    font-size: 15px;
    padding-top: 6px;
  }

  .page-disclaimer .usage-clause__body {
    max-width: 74ch;
  }

  .page-disclaimer .usage-contact {
    padding: 20px 22px;
  }
}

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

/* —— 打印：去掉轨道与按钮，转为黑白条款 —— */
@media print {
  .page-disclaimer {
    padding: 0;
    color: #111;
    background: #fff;
  }

  .page-disclaimer .usage-hero__fig,
  .page-disclaimer .usage-hero__actions,
  .page-disclaimer .usage-toc,
  .page-disclaimer .crumbs {
    display: none !important;
  }

  .page-disclaimer .usage-hero,
  .page-disclaimer .usage-body {
    display: block;
    padding: 0;
    border: 0;
  }

  .page-disclaimer .usage-hero h1 {
    color: #000;
    font-size: 22pt;
    max-width: none;
  }

  .page-disclaimer .usage-hero__kicker,
  .page-disclaimer .usage-hero__meta,
  .page-disclaimer .usage-clause__num,
  .page-disclaimer .usage-contact__k {
    color: #444;
  }

  .page-disclaimer .usage-hero__lead,
  .page-disclaimer .usage-clause p,
  .page-disclaimer .usage-contact__v {
    color: #111;
  }

  .page-disclaimer .usage-clause {
    display: block;
    padding: 14px 0;
    border-top: 1px solid #bbb;
    page-break-inside: avoid;
  }

  .page-disclaimer .usage-clause h2 {
    color: #000;
  }

  .page-disclaimer .usage-clause h2::after {
    background: #999;
  }

  .page-disclaimer .usage-clause__body a {
    color: #111;
    border-bottom: 0;
  }

  .page-disclaimer .usage-contact {
    border: 1px solid #999;
    border-left: 3px solid #666;
    background: #fff;
  }
}