.page-disclaimer {
  --usage-hair: rgba(16, 24, 38, 0.14);
  --usage-hair-soft: rgba(16, 24, 38, 0.08);
}

/* ---------- 页头 ---------- */
.page-disclaimer .usage-hero {
  padding: 26px 0 0;
  background:
    linear-gradient(180deg, rgba(15, 163, 107, 0.08) 0%, rgba(15, 163, 107, 0) 58%),
    var(--c-paper);
}

.page-disclaimer .usage-hero__mark {
  width: 88px;
  height: 4px;
  margin: 22px 0 20px;
  background: linear-gradient(90deg, var(--c-green) 0 62%, var(--c-orange) 62% 100%);
}

.page-disclaimer .usage-hero__title {
  margin: 12px 0 0;
  font-size: var(--fs-xl);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--c-ink);
}

.page-disclaimer .usage-hero__lead {
  margin: 16px 0 0;
  max-width: 40em;
  font-size: var(--fs-body);
  line-height: 1.75;
  color: var(--text-soft);
}

/* ---------- 条款目录 ---------- */
.page-disclaimer .clause-index {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
  background-color: var(--usage-hair);
  border: 1px solid var(--usage-hair);
}

.page-disclaimer .clause-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-height: 44px;
  padding: 15px 16px;
  background: var(--c-paper);
  color: var(--c-ink);
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease;
}

.page-disclaimer .clause-index__link:hover,
.page-disclaimer .clause-index__link:focus-visible {
  background: var(--c-mist);
}

.page-disclaimer .clause-index__num {
  flex: none;
  font-size: var(--fs-s);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--c-orange);
}

.page-disclaimer .clause-index__label {
  font-size: var(--fs-s);
  font-weight: 700;
  line-height: 1.4;
}

/* ---------- 信息图 ---------- */
.page-disclaimer .usage-figure {
  padding: 34px 0 0;
  background: var(--c-paper);
}

.page-disclaimer .usage-figure__frame {
  border: 1px solid var(--usage-hair);
  background: var(--c-navy);
}

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

/* ---------- 条款正文 ---------- */
.page-disclaimer .usage-clauses {
  padding: 8px 0 0;
  background: var(--c-paper);
}

.page-disclaimer .clause {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: 30px 0;
  border-top: 1px solid var(--usage-hair);
  scroll-margin-top: 130px;
}

.page-disclaimer .clause:last-child {
  border-bottom: 1px solid var(--usage-hair);
}

.page-disclaimer .clause__num {
  font-size: var(--fs-l);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--c-orange);
}

.page-disclaimer .clause__title {
  margin: 0 0 20px;
  font-size: var(--fs-m);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--c-ink);
}

.page-disclaimer .rule-list {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .rule-list__item {
  position: relative;
  padding-left: 20px;
}

.page-disclaimer .rule-list__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 9px;
  height: 2px;
  background: var(--c-green);
}

.page-disclaimer .rule-list__text {
  margin: 0;
  max-width: 42em;
  font-size: var(--fs-body);
  line-height: 1.8;
  color: var(--text-soft);
}

.page-disclaimer .rule-list__lead {
  color: var(--c-ink);
  font-weight: 700;
}

.page-disclaimer .inline-link {
  color: var(--c-green-deep);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid var(--c-green);
  padding-bottom: 1px;
  transition: color 160ms ease, border-color 160ms ease;
}

.page-disclaimer .inline-link:hover,
.page-disclaimer .inline-link:focus-visible {
  color: var(--c-action);
  border-color: var(--c-action);
}

/* ---------- 收束卡片 ---------- */
.page-disclaimer .usage-close {
  padding: 50px 0 72px;
  background: var(--c-mist);
}

.page-disclaimer .usage-close__card {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  padding: 26px 22px;
  background: var(--c-paper);
  border: 1px solid var(--c-green);
}

.page-disclaimer .usage-close__card::after {
  content: "";
  position: absolute;
  inset: -1px;
  border: 2px solid var(--c-green);
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease;
}

.page-disclaimer .usage-close__card:hover::after,
.page-disclaimer .usage-close__card:focus-within::after {
  opacity: 1;
}

.page-disclaimer .usage-close__title {
  margin: 14px 0 0;
  font-size: var(--fs-m);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--c-ink);
}

.page-disclaimer .usage-close__desc {
  margin: 12px 0 0;
  max-width: 40em;
  font-size: var(--fs-s);
  line-height: 1.8;
  color: var(--text-soft);
}

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

.page-disclaimer .usage-close__actions .btn {
  flex: 1 1 auto;
  justify-content: center;
  text-align: center;
}

/* ---------- 焦点可见性 ---------- */
.page-disclaimer a:focus-visible,
.page-disclaimer .clause-index__link:focus-visible {
  outline: 2px solid var(--c-orange);
  outline-offset: 2px;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 720px) {
  .page-disclaimer .clause-index {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-disclaimer .usage-hero {
    padding-top: 34px;
  }

  .page-disclaimer .usage-hero__title {
    font-size: var(--fs-2xl);
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-disclaimer .usage-hero__lead {
    font-size: var(--fs-body);
  }

  .page-disclaimer .clause {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 36px;
    padding: 44px 0;
  }

  .page-disclaimer .clause__num {
    font-size: var(--fs-xl);
    text-align: right;
  }

  .page-disclaimer .clause__title {
    font-size: var(--fs-l);
    margin-bottom: 24px;
  }

  .page-disclaimer .usage-close__card {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 44px;
    padding: 38px 40px;
  }

  .page-disclaimer .usage-close__actions {
    flex: none;
    flex-direction: column;
    min-width: 220px;
  }

  .page-disclaimer .usage-close__actions .btn {
    flex: 0 0 auto;
    width: 100%;
  }
}

@media (min-width: 1100px) {
  .page-disclaimer .usage-figure {
    padding-top: 42px;
  }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .clause-index__link,
  .page-disclaimer .inline-link,
  .page-disclaimer .usage-close__card::after {
    transition: none;
  }
}