.page-disclaimer {
  --rail: 2.5rem;
  --us-hair: 1px solid var(--grid-line);
  position: relative;
  padding: clamp(1rem, 3vw, 1.75rem) 0 clamp(2.5rem, 7vw, 4.5rem);
  background-color: var(--ink-abyss);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 76px 76px;
  background-position: -1px -1px;
  color: var(--cream-paper);
  font-family: var(--font-body);
  overflow-x: hidden;
}

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

.page-disclaimer :focus-visible {
  outline: 2px solid var(--electric-cyan);
  outline-offset: 2px;
}

/* ---------- 标题区 ---------- */
.page-disclaimer .breadcrumbs {
  margin-bottom: clamp(1rem, 3vw, 1.75rem);
}

.page-disclaimer .us-hero {
  position: relative;
  padding: clamp(1rem, 3vw, 2rem) 0 clamp(1.25rem, 3vw, 2rem);
}

.page-disclaimer .us-hero::before {
  content: "";
  position: absolute;
  top: -30%;
  right: -12%;
  width: min(58%, 460px);
  height: 260px;
  background: linear-gradient(135deg, rgba(31, 224, 232, 0.20), rgba(232, 180, 74, 0.10));
  clip-path: polygon(0 0, 100% 0, 100% 74%, 0 100%);
  pointer-events: none;
}

.page-disclaimer .us-hero h1 {
  max-width: 22ch;
  margin: 0.5rem 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.1rem, 6.4vw, 3.6rem);
  line-height: 1.06;
  letter-spacing: -0.01em;
}

.page-disclaimer .us-hero__lead {
  max-width: 62ch;
  margin: 1rem 0 0;
  color: var(--slate-mist);
  font-size: 1rem;
  line-height: 1.75;
}

.page-disclaimer .us-hero__tags {
  margin-top: 1.25rem;
}

/* ---------- 跳转索引 ---------- */
.page-disclaimer .us-jump {
  list-style: none;
  margin: clamp(1.25rem, 3.5vw, 2rem) 0 0;
  padding: 0;
  border-top: var(--us-hair);
}

.page-disclaimer .us-jump li {
  border-bottom: var(--us-hair);
}

.page-disclaimer .us-jump a {
  display: grid;
  grid-template-columns: var(--rail) 1fr;
  gap: 0.75rem;
  align-items: baseline;
  min-height: 44px;
  padding: 0.7rem 0;
  color: var(--cream-paper);
  font-size: 0.9375rem;
  text-decoration: none;
  transition: color 200ms var(--ease), transform 200ms var(--ease);
}

.page-disclaimer .us-jump a:hover {
  color: var(--electric-cyan);
  transform: translateX(4px);
}

.page-disclaimer .us-jump__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.8125rem;
  font-variant-numeric: tabular-nums;
  color: var(--electric-cyan);
}

/* ---------- 首图 ---------- */
.page-disclaimer .us-figure {
  margin: clamp(1.5rem, 4vw, 2.5rem) 0 0;
  border: var(--us-hair);
}

.page-disclaimer .us-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 14 / 8;
}

.page-disclaimer .us-figure__caption {
  margin: 0;
  padding: 0.7rem clamp(0.75rem, 2vw, 1.25rem);
  border-top: var(--us-hair);
  color: var(--muted-ink);
  font-size: 0.8125rem;
  line-height: 1.6;
}

/* ---------- 章节 ---------- */
.page-disclaimer .us-flow {
  margin-top: clamp(2rem, 5vw, 3.25rem);
}

.page-disclaimer .us-section {
  margin-top: clamp(2rem, 4.5vw, 3rem);
  scroll-margin-top: 96px;
}

.page-disclaimer .us-section:first-child {
  margin-top: 0;
}

.page-disclaimer .us-section__head {
  display: grid;
  grid-template-columns: var(--rail) 1fr;
  gap: 0.75rem;
  align-items: baseline;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--grid-line);
}

.page-disclaimer .us-section__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
  color: var(--warm-gold);
}

.page-disclaimer .us-section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.25rem, 3.6vw, 1.75rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.page-disclaimer .us-section__lede {
  max-width: 68ch;
  margin: 0.9rem 0 0;
  color: var(--slate-mist);
  font-size: 0.9375rem;
  line-height: 1.75;
}

/* ---------- 设备建议 ---------- */
.page-disclaimer .us-devices {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 1rem 0 0.25rem;
  background: var(--grid-line);
  border: var(--us-hair);
}

.page-disclaimer .us-device {
  background: var(--navy-deck);
  padding: clamp(0.9rem, 2.4vw, 1.15rem);
}

.page-disclaimer .us-device__mark {
  position: relative;
  display: block;
  width: 18px;
  height: 18px;
  border: 1px solid var(--electric-cyan);
}

.page-disclaimer .us-device__mark::after {
  content: "";
  position: absolute;
  inset: 4px;
  background: var(--electric-cyan);
  opacity: 0.55;
}

.page-disclaimer .us-device__title {
  margin: 0.7rem 0 0.3rem;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.01em;
}

.page-disclaimer .us-device__desc {
  margin: 0;
  color: var(--slate-mist);
  font-size: 0.875rem;
  line-height: 1.7;
}

/* ---------- 条目列表 ---------- */
.page-disclaimer .us-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-disclaimer .us-item {
  display: grid;
  grid-template-columns: var(--rail) 1fr;
  gap: 0.75rem;
  padding: 0.8rem 0;
  border-bottom: var(--us-hair);
}

.page-disclaimer .us-item__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.8125rem;
  font-variant-numeric: tabular-nums;
  color: var(--slate-mist);
  padding-top: 0.15rem;
}

.page-disclaimer .us-item__text {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--cream-paper);
}

.page-disclaimer .us-item:hover .us-item__num {
  color: var(--electric-cyan);
}

/* ---------- 引用格式 ---------- */
.page-disclaimer .us-quote {
  margin: 1.25rem 0 0;
  padding: 0.9rem 0 0.9rem 1rem;
  border-left: 2px solid var(--warm-gold);
  background: linear-gradient(90deg, rgba(232, 180, 74, 0.10), rgba(232, 180, 74, 0) 62%);
}

.page-disclaimer .us-quote__label {
  margin: 0 0 0.45rem;
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--warm-gold);
}

.page-disclaimer .us-quote__text {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--cream-paper);
  word-break: break-word;
}

.page-disclaimer .us-quote__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  margin-top: 0.85rem;
}

.page-disclaimer .us-quote__btn {
  min-height: 44px;
}

.page-disclaimer .copy-hint {
  font-size: 0.8125rem;
  color: var(--electric-cyan);
}

/* ---------- 受限情形 ---------- */
.page-disclaimer .us-limit {
  margin-top: 1rem;
  padding: 0 clamp(0.75rem, 2.4vw, 1.25rem);
  border: 1px solid var(--signal-rust);
  background: rgba(210, 96, 58, 0.06);
}

.page-disclaimer .us-limit .us-item:last-child {
  border-bottom: 0;
}

.page-disclaimer .us-limit .us-item__num {
  color: var(--signal-rust);
}

/* ---------- 延伸入口 ---------- */
.page-disclaimer .us-links {
  display: grid;
  grid-template-columns: 1fr;
  margin-top: clamp(2rem, 5vw, 3rem);
  border-top: var(--us-hair);
}

.page-disclaimer .us-links__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 44px;
  padding: 0.9rem 0;
  border-bottom: var(--us-hair);
  color: var(--cream-paper);
  text-decoration: none;
  transition: color 200ms var(--ease), transform 200ms var(--ease);
}

.page-disclaimer .us-links__item:hover {
  color: var(--electric-cyan);
  transform: translateX(4px);
}

.page-disclaimer .us-links__label {
  font-size: 0.9375rem;
  line-height: 1.6;
}

.page-disclaimer .us-links__meta {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.75rem;
  color: var(--muted-ink);
  white-space: nowrap;
}

/* ---------- 返回顶部 ---------- */
.page-disclaimer .us-totop {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 44px;
  margin-top: clamp(1.5rem, 4vw, 2.25rem);
  padding: 0.55rem 0.9rem 0.55rem 0;
  border-top: var(--us-hair);
  color: var(--slate-mist);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: color 200ms var(--ease);
}

.page-disclaimer .us-totop:hover {
  color: var(--electric-cyan);
}

/* ---------- 平板 / 桌面 ---------- */
@media (min-width: 768px) {
  .page-disclaimer .us-jump {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--gap);
  }

  .page-disclaimer .us-jump li:nth-child(odd) {
    border-right: var(--us-hair);
    padding-right: var(--gap);
  }

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

  .page-disclaimer .us-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--gap);
  }

  .page-disclaimer .us-links__item:nth-child(odd) {
    border-right: var(--us-hair);
    padding-right: var(--gap);
  }
}

@media (min-width: 1024px) {
  .page-disclaimer {
    --rail: 3.25rem;
  }

  .page-disclaimer .us-flow {
    max-width: 1120px;
  }

  .page-disclaimer .us-section:nth-child(even) {
    padding-left: clamp(1rem, 6%, 5rem);
  }

  .page-disclaimer .us-section__lede {
    padding-left: 0;
  }

  .page-disclaimer .us-quote {
    max-width: 72ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .us-jump a,
  .page-disclaimer .us-links__item,
  .page-disclaimer .us-totop {
    transition: none;
  }

  .page-disclaimer .us-jump a:hover,
  .page-disclaimer .us-links__item:hover {
    transform: none;
  }
}