.page-disclaimer {
  --dsc-line: 1px solid var(--ink-700);
  --dsc-gap: clamp(52px, 7.5vw, 92px);
  background: var(--ink-950);
  color: var(--text-100);
  padding-bottom: clamp(64px, 9vw, 118px);
}

.page-disclaimer .crumbs__sep {
  margin: 0 8px;
  color: var(--ink-700);
}

/* ---------- 页首 ---------- */
.page-disclaimer .doc-head {
  padding-top: clamp(24px, 4.5vw, 52px);
  max-width: 820px;
}

.page-disclaimer .doc-head__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.page-disclaimer .doc-head__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(29px, 5vw, 50px);
  line-height: 1.22;
  letter-spacing: 0.005em;
  margin: 20px 0 0;
  max-width: 20ch;
}

.page-disclaimer .doc-head__lead {
  margin: 20px 0 0;
  max-width: 58ch;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--mist-300);
}

/* 版本标签 + 悬停更新说明 */
.page-disclaimer .version-tag {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: 5px 13px;
  background: var(--orange-500);
  color: var(--ink-950);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: help;
}

.page-disclaimer .version-tag__note {
  position: absolute;
  top: calc(100% + 9px);
  left: 0;
  z-index: 6;
  width: min(330px, 76vw);
  padding: 12px 15px;
  background: var(--ink-800);
  color: var(--text-100);
  border: var(--dsc-line);
  border-left: 3px solid var(--lime-400);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 400;
  line-height: 1.65;
  letter-spacing: 0;
  opacity: 0;
  transform: translateY(-5px);
  pointer-events: none;
  transition: opacity var(--dur) ease, transform var(--dur) ease;
}

.page-disclaimer .version-tag:hover .version-tag__note,
.page-disclaimer .version-tag:focus-within .version-tag__note,
.page-disclaimer .version-tag:focus-visible .version-tag__note {
  opacity: 1;
  transform: translateY(0);
}

.page-disclaimer .version-tag:focus-visible {
  outline: 2px solid var(--lime-400);
  outline-offset: 2px;
}

/* ---------- 页首氛围图 ---------- */
.page-disclaimer .doc-figure {
  margin: clamp(30px, 4.5vw, 52px) 0 0;
}

/* ---------- 章节 ---------- */
.page-disclaimer .doc-section {
  margin-top: var(--dsc-gap);
  max-width: 900px;
}

.page-disclaimer .section__head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding-bottom: 13px;
  border-bottom: 2px solid var(--ink-700);
}

.page-disclaimer .section__num {
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--lime-400);
  flex: none;
}

.page-disclaimer .section__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.35;
  margin: 0;
  color: var(--text-100);
}

.page-disclaimer .doc-section__lead {
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist-300);
  max-width: 46ch;
}

/* ---------- 编号条目 ---------- */
.page-disclaimer .rule-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.page-disclaimer .rule-item {
  position: relative;
  display: grid;
  grid-template-columns: 2.9rem minmax(0, 1fr);
  gap: 0 14px;
  padding: clamp(16px, 2.3vw, 22px) 0;
  border-bottom: var(--dsc-line);
}

.page-disclaimer .rule-item::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--lime-400);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform var(--dur) ease;
}

.page-disclaimer .rule-item:hover::before,
.page-disclaimer .rule-item:focus-within::before {
  transform: scaleY(1);
}

.page-disclaimer .rule-item__num {
  font-family: var(--font-mono);
  font-size: 13.5px;
  font-weight: 500;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--mist-300);
  padding-top: 3px;
  transition: color var(--dur) ease;
}

.page-disclaimer .rule-item:hover .rule-item__num,
.page-disclaimer .rule-item:focus-within .rule-item__num {
  color: var(--lime-400);
}

.page-disclaimer .rule-item__title {
  margin: 0 0 7px;
  font-family: var(--font-sans);
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--text-100);
}

.page-disclaimer .rule-item__text {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist-300);
}

.page-disclaimer .rule-item__text a {
  color: var(--lime-400);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-disclaimer .rule-item__text a:hover,
.page-disclaimer .rule-item__text a:focus-visible {
  color: var(--orange-500);
}

/* ---------- 版权宽条 ---------- */
.page-disclaimer .copyright-band {
  position: relative;
  margin-top: var(--dsc-gap);
  padding: clamp(26px, 4vw, 44px);
  background: var(--orange-500);
  color: var(--ink-950);
  border-left: 6px solid var(--ink-950);
  overflow: hidden;
}

.page-disclaimer .copyright-band::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    0deg,
    rgba(4, 20, 15, 0.09) 0 1px,
    rgba(4, 20, 15, 0) 1px 4px
  );
}

.page-disclaimer .copyright-band__kicker {
  position: relative;
  z-index: 1;
  margin: 0 0 12px;
  color: rgba(4, 20, 15, 0.72);
}

.page-disclaimer .copyright-band__text {
  position: relative;
  z-index: 1;
  margin: 0;
  max-width: 32ch;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(18px, 2.5vw, 25px);
  line-height: 1.5;
}

/* ---------- 页尾交叉链接 ---------- */
.page-disclaimer .cross-links {
  margin-top: var(--dsc-gap);
  padding: clamp(22px, 3.4vw, 34px);
  background: var(--ink-900);
  border: var(--dsc-line);
  display: grid;
  gap: 14px;
}

.page-disclaimer .cross-links__label {
  margin: 0 0 4px;
  color: var(--mist-300);
}

.page-disclaimer .cross-link {
  display: block;
  padding: 16px 18px;
  background: var(--ink-800);
  border: 1px solid var(--ink-700);
  border-left: 3px solid var(--ink-700);
  text-decoration: none;
  color: var(--text-100);
  transition: border-color var(--dur) ease, background var(--dur) ease, transform var(--dur) ease;
}

.page-disclaimer .cross-link:hover,
.page-disclaimer .cross-link:focus-visible {
  border-left-color: var(--lime-400);
  background: var(--ink-950);
  transform: translateX(2px);
}

.page-disclaimer .cross-link:focus-visible {
  outline: 2px solid var(--lime-400);
  outline-offset: 2px;
}

.page-disclaimer .cross-link__name {
  display: block;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.4;
}

.page-disclaimer .cross-link--up .cross-link__name::after {
  content: " ↑";
  font-family: var(--font-mono);
  color: var(--lime-400);
}

.page-disclaimer .cross-link__more {
  display: block;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist-300);
  transition: max-height var(--dur) ease, opacity var(--dur) ease, margin-top var(--dur) ease;
}

.page-disclaimer .cross-link:hover .cross-link__more,
.page-disclaimer .cross-link:focus-visible .cross-link__more {
  max-height: 5.5em;
  margin-top: 9px;
  opacity: 1;
}

/* ---------- 响应式 ---------- */
@media (min-width: 780px) {
  .page-disclaimer .cross-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 16px;
  }

  .page-disclaimer .cross-links__label {
    grid-column: 1 / -1;
  }

  .page-disclaimer .cross-link--up {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1024px) {
  .page-disclaimer .doc-section {
    padding-left: 22px;
    border-left: 1px solid var(--ink-700);
  }

  .page-disclaimer .copyright-band {
    margin-left: 0;
  }
}

@media (max-width: 560px) {
  .page-disclaimer .rule-item {
    grid-template-columns: 2.4rem minmax(0, 1fr);
    gap: 0 11px;
  }

  .page-disclaimer .rule-item::before {
    left: -6px;
  }

  .page-disclaimer .section__head {
    gap: 11px;
  }

  .page-disclaimer .doc-head__title {
    max-width: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .version-tag__note,
  .page-disclaimer .rule-item::before,
  .page-disclaimer .rule-item__num,
  .page-disclaimer .cross-link,
  .page-disclaimer .cross-link__more {
    transition-duration: 1ms !important;
  }
}