.page-disclaimer {
  --pd-card-bg: linear-gradient(155deg, #12224D 0%, #0B1B3F 100%);
  --pd-item-bg: rgba(18, 34, 77, 0.55);
  --pd-rule: rgba(29, 58, 122, 0.7);
  --pd-accent-local: var(--violet);
  color: var(--text);
  font-family: var(--font-body);
  background: var(--ink-900);
  overflow-x: hidden;
}

/* ---------- 顶部区域 ---------- */
.page-disclaimer .usage-top {
  position: relative;
  isolation: isolate;
  padding: 0 0 4px;
}

.page-disclaimer .usage-top__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  background: var(--ink-900);
}

.page-disclaimer .usage-top__bg img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  object-position: center 28%;
  opacity: 0.32;
}

.page-disclaimer .usage-top__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 86% at 84% 4%, rgba(108, 75, 255, 0.36), rgba(10, 22, 51, 0) 62%),
    linear-gradient(180deg, rgba(10, 22, 51, 0.6) 0%, rgba(10, 22, 51, 0.88) 58%, var(--ink-900) 100%);
}

.page-disclaimer .usage-top__inner {
  padding-top: 20px;
  padding-bottom: 8px;
}

.page-disclaimer .breadcrumb {
  margin-bottom: 26px;
}

.page-disclaimer .usage-hero__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--violet);
}

.page-disclaimer .usage-hero__title {
  margin: 0 0 16px;
  max-width: 15ch;
  font-size: var(--fs-34);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--white);
}

.page-disclaimer .usage-hero__lead {
  margin: 0;
  max-width: 58ch;
  font-size: var(--fs-16);
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 要点摘要 ---------- */
.page-disclaimer .summary-band {
  display: grid;
  gap: 14px;
  margin-top: 34px;
}

.page-disclaimer .summary-card {
  position: relative;
  display: block;
  padding: 20px 20px 22px 22px;
  background: var(--pd-card-bg);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
  text-decoration: none;
  color: inherit;
  transition: transform 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-disclaimer .summary-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--pd-accent-local);
}

.page-disclaimer .summary-card--violet { --pd-accent-local: var(--violet); }
.page-disclaimer .summary-card--cool { --pd-accent-local: var(--cold); }
.page-disclaimer .summary-card--orange { --pd-accent-local: var(--orange); }

.page-disclaimer .summary-card__num {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.12em;
  color: var(--pd-accent-local);
}

.page-disclaimer .summary-card__title {
  display: block;
  margin-bottom: 8px;
  font-size: var(--fs-18);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-disclaimer .summary-card__text {
  display: block;
  font-size: var(--fs-13);
  line-height: 1.78;
  color: var(--muted);
}

.page-disclaimer .summary-card:hover,
.page-disclaimer .summary-card:focus-visible {
  transform: translateY(-3px);
  border-color: var(--pd-accent-local);
}

.page-disclaimer .summary-card:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
}

/* ---------- 编号章节 ---------- */
.page-disclaimer .clause {
  --pd-accent-local: var(--violet);
  position: relative;
  padding: 40px 0;
  border-top: 1px solid var(--pd-rule);
}

.page-disclaimer .clause--violet {
  --pd-accent-local: var(--violet);
  background: linear-gradient(180deg, rgba(108, 75, 255, 0.11), rgba(10, 22, 51, 0) 68%);
}

.page-disclaimer .clause--cool {
  --pd-accent-local: var(--cold);
  background: linear-gradient(180deg, rgba(46, 139, 255, 0.11), rgba(10, 22, 51, 0) 68%);
}

.page-disclaimer .clause--orange {
  --pd-accent-local: var(--orange);
  background: linear-gradient(180deg, rgba(255, 122, 26, 0.1), rgba(10, 22, 51, 0) 68%);
}

.page-disclaimer .clause__inner {
  display: grid;
  gap: 12px;
}

.page-disclaimer .clause__num {
  font-family: var(--font-mono);
  font-size: var(--fs-34);
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.04em;
  color: transparent;
  -webkit-text-stroke: 1px var(--pd-accent-local);
  text-stroke: 1px var(--pd-accent-local);
}

.page-disclaimer .clause__title {
  margin: 0 0 10px;
  font-size: var(--fs-22);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-disclaimer .clause__lead {
  margin: 0 0 18px;
  max-width: 62ch;
  font-size: var(--fs-16);
  line-height: 1.82;
  color: var(--muted);
}

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

.page-disclaimer .clause__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  padding: 14px 16px;
  background: var(--pd-item-bg);
  border-left: 2px solid var(--pd-accent-local);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.page-disclaimer .clause__idx {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: var(--fs-13);
  letter-spacing: 0.06em;
  color: var(--pd-accent-local);
}

.page-disclaimer .clause__item p {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.82;
  color: var(--text);
}

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

.page-disclaimer .clause__item a:hover,
.page-disclaimer .clause__item a:focus-visible {
  color: var(--white);
}

/* ---------- 结尾行动条 ---------- */
.page-disclaimer .usage-cta {
  position: relative;
  padding: 44px 0 56px;
  background:
    linear-gradient(180deg, rgba(10, 22, 51, 0) 0%, rgba(108, 75, 255, 0.16) 100%);
  border-top: 1px solid var(--pd-rule);
}

.page-disclaimer .usage-cta__inner {
  display: grid;
  gap: 20px;
}

.page-disclaimer .usage-cta__text {
  margin: 0;
  max-width: 46ch;
  font-size: var(--fs-18);
  line-height: 1.7;
  font-weight: 700;
  color: var(--white);
}

.page-disclaimer .usage-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 浮动回索引 ---------- */
.page-disclaimer .back-index {
  position: fixed;
  right: 14px;
  bottom: 92px;
  z-index: 40;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--white);
  background: rgba(18, 34, 77, 0.94);
  border: 1px solid var(--line);
  border-radius: 999px;
  text-decoration: none;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-disclaimer .back-index:hover,
.page-disclaimer .back-index:focus-visible {
  border-color: var(--violet);
  color: var(--green);
}

.page-disclaimer .back-index:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-disclaimer .usage-hero__title {
    font-size: var(--fs-48);
  }

  .page-disclaimer .summary-band {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-disclaimer .usage-cta__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }

  .page-disclaimer .usage-cta__links {
    justify-content: flex-end;
  }
}

@media (min-width: 1000px) {
  .page-disclaimer .usage-top__inner {
    padding-top: 30px;
    padding-bottom: 18px;
  }

  .page-disclaimer .usage-hero__title {
    font-size: var(--fs-72);
    max-width: 13ch;
  }

  .page-disclaimer .usage-hero__lead {
    font-size: var(--fs-18);
  }

  .page-disclaimer .clause {
    padding: 56px 0;
  }

  .page-disclaimer .clause__inner {
    grid-template-columns: 138px minmax(0, 1fr);
    gap: 34px;
  }

  .page-disclaimer .clause__num {
    font-size: var(--fs-72);
    padding-top: 6px;
  }

  .page-disclaimer .clause__body {
    max-width: 76ch;
  }

  .page-disclaimer .back-index {
    right: 28px;
    bottom: 100px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .summary-card,
  .page-disclaimer .back-index {
    transition: none;
  }

  .page-disclaimer .summary-card:hover,
  .page-disclaimer .summary-card:focus-visible {
    transform: none;
  }
}