.page-disclaimer .doc-head {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  color: var(--text-on-ink);
  padding: 32px 0 56px;
}

.page-disclaimer .doc-head::after {
  content: "";
  position: absolute;
  right: -110px;
  bottom: -150px;
  width: 360px;
  height: 360px;
  border: 1px solid var(--line-dark);
  border-radius: 50%;
  pointer-events: none;
}

.page-disclaimer .doc-head .breadcrumb {
  position: relative;
  z-index: 1;
  font-size: 14px;
  color: var(--text-on-ink-dim);
}

.page-disclaimer .doc-head .breadcrumb a {
  color: var(--text-on-ink-dim);
  text-decoration: none;
  transition: color .16s ease;
}

.page-disclaimer .doc-head .breadcrumb a:hover,
.page-disclaimer .doc-head .breadcrumb a:focus-visible {
  color: var(--amber-soft);
}

.page-disclaimer .doc-head .breadcrumb [aria-current="page"] {
  color: var(--celadon-soft);
}

.page-disclaimer .scale-bar {
  position: relative;
  z-index: 1;
  height: 10px;
  margin: 20px 0 28px;
  border-top: 1px solid var(--line-dark);
  background-image: repeating-linear-gradient(to right, var(--line-dark) 0 1px, transparent 1px 28px);
  background-repeat: repeat-x;
  background-position: 0 0;
}

.page-disclaimer .doc-head .section-index {
  position: relative;
  z-index: 1;
  color: var(--celadon-soft);
}

.page-disclaimer .doc-title {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-size: clamp(34px, 8vw, 52px);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 10px 0 22px;
  color: var(--white);
}

.page-disclaimer .doc-lede {
  position: relative;
  z-index: 1;
  max-width: 62ch;
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.9;
  color: var(--text-on-ink);
}

/* ---------- 正文两段 ---------- */

.page-disclaimer .doc-body {
  background: var(--paper);
  padding: 44px 0;
}

.page-disclaimer .doc-body--tail {
  border-top: 1px solid var(--line-light-soft);
}

.page-disclaimer .doc-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
}

.page-disclaimer .sec {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  padding: 36px 0;
  border-top: 1px solid var(--line-light-soft);
}

.page-disclaimer .sec:first-child {
  border-top: none;
  padding-top: 0;
}

.page-disclaimer .sec:last-child {
  padding-bottom: 0;
}

.page-disclaimer .sec__side {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
}

.page-disclaimer .sec__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--celadon);
}

.page-disclaimer .sec__label {
  font-family: var(--font-body);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--gray);
}

.page-disclaimer .sec__title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.45;
  margin: 0 0 16px;
  color: var(--graphite);
}

.page-disclaimer .sec__body p {
  max-width: 68ch;
  margin: 0 0 1em;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.9;
  color: var(--graphite);
  overflow-wrap: break-word;
}

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

.page-disclaimer .sec__body a {
  color: var(--celadon);
  text-decoration: none;
  border-bottom: 1px solid var(--celadon-soft);
  transition: color .16s ease, border-color .16s ease;
}

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

/* ---------- 变更记录 ---------- */

.page-disclaimer .changes {
  background: var(--white);
  padding: 52px 0 56px;
  border-top: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
}

.page-disclaimer .changes__head {
  max-width: 70ch;
}

.page-disclaimer .changes__head .section-index {
  color: var(--celadon);
}

.page-disclaimer .changes__title {
  font-family: var(--font-display);
  font-size: clamp(24px, 5vw, 32px);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin: 10px 0 16px;
  color: var(--graphite);
}

.page-disclaimer .changes__lede {
  margin: 0 0 34px;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.9;
  color: var(--graphite);
}

.page-disclaimer .changes__figure {
  margin: 0 0 36px;
}

.page-disclaimer .changes__img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 560;
  object-fit: cover;
  border: 1px solid var(--line-light);
  background: var(--ink);
}

.page-disclaimer .changes__caption {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--gray);
}

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

.page-disclaimer .chg-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--line-light-soft);
}

.page-disclaimer .chg-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  margin-bottom: 10px;
}

.page-disclaimer .chg-no,
.page-disclaimer .chg-time {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
}

.page-disclaimer .chg-no {
  color: var(--gray);
  transition: color .16s ease;
}

.page-disclaimer .chg-time {
  color: var(--celadon);
  transition: color .16s ease;
}

.page-disclaimer .chg-text {
  margin: 0;
  max-width: 66ch;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--graphite);
}

.page-disclaimer .chg-diff {
  margin: 10px 0 0;
  max-width: 66ch;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
}

.page-disclaimer .chg-diff__lead {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 6px;
  border: 1px solid var(--line-light);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--gray);
}

/* ---------- 收尾入口 ---------- */

.page-disclaimer .doc-cta {
  background: var(--ink);
  color: var(--text-on-ink);
  padding: 48px 0 56px;
}

.page-disclaimer .doc-cta .section-index {
  color: var(--celadon-soft);
}

.page-disclaimer .cta-title {
  font-family: var(--font-display);
  font-size: clamp(22px, 5vw, 30px);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin: 10px 0 28px;
  color: var(--white);
}

.page-disclaimer .cta-links {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-disclaimer .cta-link {
  display: block;
  padding: 18px 20px;
  border: 1px solid var(--line-dark);
  color: var(--text-on-ink);
  text-decoration: none;
  transition: background-color .16s ease, border-color .16s ease, color .16s ease;
}

.page-disclaimer .cta-link__label {
  display: block;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 6px;
}

.page-disclaimer .cta-link__desc {
  display: block;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-on-ink-dim);
}

.page-disclaimer .cta-link:hover,
.page-disclaimer .cta-link:focus-visible {
  background: var(--ink-2);
  border-color: var(--amber);
  color: var(--white);
}

.page-disclaimer .cta-link:hover .cta-link__desc,
.page-disclaimer .cta-link:focus-visible .cta-link__desc {
  color: var(--text-on-ink);
}

/* ---------- 桌面 ---------- */

@media (min-width: 720px) {
  .page-disclaimer .cta-links {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }
}

@media (min-width: 900px) {
  .page-disclaimer .doc-head {
    padding: 44px 0 72px;
  }

  .page-disclaimer .doc-head::after {
    right: -60px;
    bottom: -190px;
    width: 460px;
    height: 460px;
  }

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

  .page-disclaimer .sec {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 48px;
    padding: 52px 0;
  }

  .page-disclaimer .sec__side {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding-top: 4px;
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
  }

  .page-disclaimer .sec__title {
    margin-bottom: 18px;
  }

  .page-disclaimer .changes {
    padding: 68px 0 72px;
  }

  .page-disclaimer .changes__lede {
    margin-bottom: 40px;
  }

  .page-disclaimer .changes__figure {
    margin-bottom: 44px;
  }

  .page-disclaimer .chg-item {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
    gap: 44px;
    align-items: start;
    padding: 22px 0;
  }

  .page-disclaimer .chg-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    margin-bottom: 0;
  }

  .page-disclaimer .chg-body {
    min-width: 0;
  }

  .page-disclaimer .chg-diff {
    max-height: 0;
    margin-top: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height .2s ease, opacity .2s ease, margin-top .2s ease;
  }

  .page-disclaimer .chg-item:hover .chg-diff,
  .page-disclaimer .chg-item:focus-within .chg-diff {
    max-height: 120px;
    margin-top: 10px;
    opacity: 1;
  }

  .page-disclaimer .chg-item:hover .chg-no,
  .page-disclaimer .chg-item:focus-within .chg-no {
    color: var(--amber);
  }

  .page-disclaimer .chg-item:hover .chg-time,
  .page-disclaimer .chg-item:focus-within .chg-time {
    color: var(--amber-soft);
  }

  .page-disclaimer .doc-cta {
    padding: 64px 0 72px;
  }

  .page-disclaimer .cta-title {
    margin-bottom: 34px;
  }

  .page-disclaimer .cta-link {
    padding: 22px 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .chg-diff,
  .page-disclaimer .chg-no,
  .page-disclaimer .chg-time,
  .page-disclaimer .cta-link,
  .page-disclaimer .sec__body a,
  .page-disclaimer .doc-head .breadcrumb a {
    transition: none;
  }
}