.page-disclaimer {
  --u-col: clamp(40px, 5vw, 76px);
  --u-gap: clamp(16px, 2.4vw, 32px);
  --u-pad: clamp(20px, 3vw, 36px);
  background: var(--ink);
  color: var(--paper);
  padding-bottom: var(--s6);
}

/* 顶部工具条与面包屑 */
.page-disclaimer .usage-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s3);
  padding-top: var(--s4);
  padding-bottom: var(--s3);
}

.page-disclaimer .usage-crumb {
  color: var(--cold);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

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

.page-disclaimer .usage-topbar__code {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--mute);
  white-space: nowrap;
}

/* 首屏 */
.page-disclaimer .usage-hero {
  border-top: 1px solid var(--hair);
  border-bottom: 1px solid var(--hair);
  background-color: var(--ink);
  background-image:
    linear-gradient(to right, var(--hair) 1px, transparent 1px),
    linear-gradient(to bottom, var(--hair) 1px, transparent 1px);
  background-size: 48px 48px;
}

.page-disclaimer .usage-hero__inner {
  padding: clamp(40px, 7vw, 88px) 0 clamp(32px, 6vw, 72px);
  max-width: 1040px;
}

.page-disclaimer .usage-hero__eyebrow {
  display: block;
  margin: 0 0 var(--s4);
  color: var(--fluoro);
}

.page-disclaimer .usage-hero__title {
  margin: 0 0 var(--s4);
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(38px, 7.4vw, 104px);
  line-height: 1.02;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-disclaimer .usage-hero__lede {
  margin: 0;
  max-width: 62ch;
  color: var(--cold);
  font-size: clamp(15px, 1.4vw, 18px);
  line-height: 1.85;
}

/* 顶部窄幅主题图 */
.page-disclaimer .usage-figure {
  margin: var(--s5) 0 0;
}

.page-disclaimer .usage-figure .media-frame__img {
  display: block;
  width: 100%;
  height: clamp(130px, 18vw, 210px);
  object-fit: cover;
  object-position: center;
}

.page-disclaimer .usage-figure .media-frame__caption {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--mute);
}

/* 条款列表 */
.page-disclaimer .usage-clauses__head {
  margin-bottom: var(--s5);
}

.page-disclaimer .clause-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--hair);
}

.page-disclaimer .clause {
  display: grid;
  grid-template-columns: var(--u-col) 1fr;
  gap: var(--u-gap);
  padding: var(--u-pad) var(--s3) var(--u-pad) 0;
  border-bottom: 1px solid var(--hair);
  transition: background-color .18s var(--ease);
}

.page-disclaimer .clause:hover {
  background-color: rgba(46, 230, 176, .045);
}

.page-disclaimer .clause__num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(24px, 2.6vw, 36px);
  line-height: 1;
  letter-spacing: .02em;
  color: var(--mute);
  padding-left: 2px;
  transition: color .18s var(--ease);
}

.page-disclaimer .clause:hover .clause__num,
.page-disclaimer .clause:focus-within .clause__num {
  color: var(--amber);
}

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

.page-disclaimer .clause__title {
  margin: 0 0 var(--s3);
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(20px, 2.2vw, 27px);
  line-height: 1.35;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-disclaimer .clause__text {
  margin: 0 0 var(--s3);
  max-width: 64ch;
  color: var(--cold);
  font-size: 16px;
  line-height: 1.8;
  overflow-wrap: anywhere;
}

.page-disclaimer .clause__text:last-child {
  margin-bottom: 0;
}

.page-disclaimer .clause__list {
  list-style: none;
  margin: var(--s3) 0 0;
  padding: 0;
}

.page-disclaimer .clause__item {
  position: relative;
  padding-left: 20px;
  margin-bottom: var(--s3);
  max-width: 64ch;
  color: var(--paper);
  font-size: 16px;
  line-height: 1.8;
  overflow-wrap: anywhere;
}

.page-disclaimer .clause__item:last-child {
  margin-bottom: 0;
}

.page-disclaimer .clause__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 8px;
  height: 1px;
  background: var(--fluoro);
}

.page-disclaimer .clause__link {
  color: var(--fluoro);
  text-decoration: none;
  border-bottom: 1px solid rgba(46, 230, 176, .45);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-disclaimer .clause__link:hover,
.page-disclaimer .clause__link:focus-visible {
  color: var(--amber);
  border-bottom-color: var(--amber);
}

.page-disclaimer .clause__link--amber {
  color: var(--amber);
  border-bottom-color: rgba(255, 162, 58, .5);
}

.page-disclaimer .clause__link--amber:hover,
.page-disclaimer .clause__link--amber:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* 第五条：需沟通情形，琥珀细框 */
.page-disclaimer .clause--flag .clause__main {
  border-left: 1px solid var(--amber);
  padding-left: var(--u-pad);
}

.page-disclaimer .clause__text--contact {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.9;
  letter-spacing: .01em;
}

.page-disclaimer .clause__mail {
  color: var(--amber);
  white-space: nowrap;
}

/* 收尾区 */
.page-disclaimer .usage-outro {
  border-top: 1px solid var(--hair);
}

.page-disclaimer .usage-outro__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--s5);
}

.page-disclaimer .usage-outro__text {
  max-width: 60ch;
}

.page-disclaimer .usage-outro__title {
  margin: 0 0 var(--s3);
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(22px, 2.6vw, 32px);
  letter-spacing: .01em;
  color: var(--paper);
}

.page-disclaimer .usage-outro__body {
  margin: 0;
  color: var(--cold);
  font-size: 16px;
  line-height: 1.8;
}

.page-disclaimer .usage-outro__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s2);
}

.page-disclaimer .usage-top {
  display: inline-flex;
  align-items: center;
  gap: var(--s2);
  padding: 8px 14px;
  border: 1px solid var(--hair-strong);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cold);
  text-decoration: none;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.page-disclaimer .usage-top:hover,
.page-disclaimer .usage-top:focus-visible {
  color: var(--amber);
  border-color: var(--amber);
}

.page-disclaimer .usage-top__glyph {
  font-size: 13px;
  line-height: 1;
}

.page-disclaimer .usage-legal {
  margin: var(--s4) 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--mute);
}

/* 窄屏 */
@media (max-width: 640px) {
  .page-disclaimer {
    --u-col: 1fr;
    --u-pad: 24px;
  }

  .page-disclaimer .usage-topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--s2);
  }

  .page-disclaimer .usage-topbar__code {
    order: 2;
  }

  .page-disclaimer .clause {
    grid-template-columns: 1fr;
    gap: var(--s3);
    padding-right: 0;
  }

  .page-disclaimer .clause__num {
    font-size: 20px;
    letter-spacing: .16em;
  }

  .page-disclaimer .clause--flag .clause__main {
    padding-left: var(--s3);
  }

  .page-disclaimer .clause__mail {
    white-space: normal;
    overflow-wrap: anywhere;
  }

  .page-disclaimer .usage-outro__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-disclaimer .usage-outro__actions {
    width: 100%;
  }
}

@media (min-width: 1024px) {
  .page-disclaimer .clause-list {
    margin-top: var(--s5);
  }

  .page-disclaimer .usage-outro__inner {
    padding-top: var(--s2);
  }
}
</main>