.page-disclaimer {
  --paper-bg: #F1EBDE;
  --paper-deep: #E6DCCB;
  --paper-card: #FBF7EE;
  --paper-ink: #201C16;
  --paper-ink-soft: #4A423B;
  --paper-line: #B6A990;
  --paper-tab: #A65D3B;
  --paper-link: #3A5F40;
  --paper-heading: #2A241D;
  background-color: var(--paper-bg);
  color: var(--paper-ink);
  min-height: 100vh;
}

.page-disclaimer__paper {
  position: relative;
  overflow: hidden;
  padding: calc(4rem + 10px) 1.25rem 3.5rem;
}

.page-disclaimer__paper-bg {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.page-disclaimer__paper::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(ellipse at center, rgba(255, 255, 255, 0.45) 0%, rgba(255, 255, 255, 0) 72%),
    linear-gradient(to right, rgba(32, 28, 22, 0.04) 1px, transparent 1px) 0 0 / 32px 32px,
    linear-gradient(to bottom, rgba(32, 28, 22, 0.04) 1px, transparent 1px) 0 0 / 32px 32px;
}

.page-disclaimer__doc {
  position: relative;
  z-index: 2;
  max-width: 880px;
  margin: 0 auto;
  padding: 2.75rem 1.4rem 3rem;
  background: var(--paper-card);
  border: 1px solid var(--paper-line);
  border-top: 3px solid var(--paper-line);
  border-bottom: 3px solid var(--paper-line);
  box-shadow:
    6px 6px 0 rgba(32, 28, 22, 0.08),
    0 24px 50px rgba(32, 28, 22, 0.14);
}

.page-disclaimer__doc::before {
  content: "公开文档";
  position: absolute;
  top: -38px;
  left: 1.5rem;
  z-index: 3;
  background: var(--paper-tab);
  color: #F5F0E6;
  padding: 9px 16px 8px;
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 800;
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  line-height: 1;
  box-shadow: 3px 3px 0 rgba(32, 28, 22, 0.18);
}

.page-disclaimer__doc::after {
  content: "";
  position: absolute;
  right: 18px;
  bottom: 18px;
  width: 34px;
  height: 34px;
  border-right: 2px solid rgba(166, 93, 59, 0.5);
  border-bottom: 2px solid rgba(166, 93, 59, 0.5);
  pointer-events: none;
}

.page-disclaimer__crumb {
  margin-bottom: 2rem;
}

.page-disclaimer__header {
  position: relative;
  border-bottom: 2px solid var(--paper-line);
  padding-bottom: 1.6rem;
  margin-bottom: 2rem;
}

.page-disclaimer__header::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 96px;
  height: 2px;
  background: var(--paper-tab);
}

.page-disclaimer__archive {
  display: inline-block;
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--paper-tab);
  background: rgba(166, 93, 59, 0.08);
  border-left: 3px solid var(--paper-tab);
  padding: 6px 10px 6px 8px;
  margin-bottom: 1rem;
}

.page-disclaimer__header h1 {
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--paper-heading);
  margin: 0 0 0.75rem;
}

.page-disclaimer__lede {
  max-width: 60ch;
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--paper-ink-soft);
}

.page-disclaimer__index {
  border: 1px solid var(--paper-line);
  border-left: 4px solid var(--paper-tab);
  background: rgba(230, 220, 203, 0.35);
  padding: 1rem 1.1rem 1.1rem 1.25rem;
  margin-bottom: 2rem;
}

.page-disclaimer__index-title {
  margin: 0 0 0.75rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--paper-ink-soft);
}

.page-disclaimer__index ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.4rem 1rem;
}

.page-disclaimer__index a {
  display: inline-block;
  color: var(--paper-link);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.15rem 0;
  border-bottom: 1px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.page-disclaimer__index a:hover,
.page-disclaimer__index a:focus-visible {
  color: var(--paper-tab);
  border-bottom-color: var(--paper-tab);
}

.page-disclaimer__section {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.8rem 2rem;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--paper-line);
}

.page-disclaimer__section:first-of-type {
  padding-top: 0.75rem;
}

.page-disclaimer__section-head {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 0.2rem 0.7rem;
  align-items: baseline;
}

.page-disclaimer__section-num {
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 800;
  font-size: 1.25rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--paper-tab);
}

.page-disclaimer__section-meta h2 {
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 800;
  font-size: 1.4rem;
  line-height: 1.15;
  color: var(--paper-heading);
  margin: 0 0 0.2rem;
}

.page-disclaimer__section-meta p {
  margin: 0;
  font-size: 0.83rem;
  letter-spacing: 0.05em;
  color: var(--paper-ink-soft);
}

.page-disclaimer__section-body p {
  line-height: 1.85;
  margin: 0 0 1rem;
}

.page-disclaimer__section-body p:last-child {
  margin-bottom: 0;
}

.page-disclaimer__feature-list,
.page-disclaimer__fact-list {
  list-style: none;
  margin: 1rem 0 1.1rem;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-disclaimer__feature-list li,
.page-disclaimer__fact-list li {
  position: relative;
  padding-left: 1.1rem;
  line-height: 1.7;
  color: var(--paper-ink);
}

.page-disclaimer__feature-list li::before,
.page-disclaimer__fact-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.78em;
  width: 6px;
  height: 2px;
  background: var(--paper-tab);
}

.page-disclaimer__note {
  margin-top: 1.4rem;
  padding: 0.9rem 1rem;
  background: rgba(166, 93, 59, 0.08);
  border-top: 1px solid rgba(166, 93, 59, 0.25);
  border-left: 4px solid var(--paper-tab);
}

.page-disclaimer__note strong {
  display: block;
  font-weight: 800;
  letter-spacing: 0.04em;
  margin-bottom: 0.2rem;
}

.page-disclaimer__note p {
  margin: 0;
  font-size: 0.95rem;
}

.page-disclaimer__related {
  padding: 2.25rem 0 0;
}

.page-disclaimer__related h2 {
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--paper-heading);
  margin: 0 0 0.5rem;
}

.page-disclaimer__related > p {
  color: var(--paper-ink-soft);
  margin: 0 0 1.25rem;
}

.page-disclaimer__related-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem;
}

.page-disclaimer__related-list a {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 1rem 1.1rem;
  background: rgba(255, 255, 255, 0.3);
  border: 1px solid var(--paper-line);
  border-left: 4px solid var(--paper-link);
  text-decoration: none;
  color: var(--paper-ink);
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.page-disclaimer__related-list a:hover,
.page-disclaimer__related-list a:focus-visible {
  background: rgba(255, 255, 255, 0.5);
  border-left-color: var(--paper-tab);
  transform: translateX(2px);
}

.page-disclaimer__related-code {
  display: block;
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--paper-ink-soft);
  margin-bottom: 0.25rem;
}

.page-disclaimer__related-name {
  display: block;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--paper-heading);
  margin-bottom: 0.3rem;
}

.page-disclaimer__related-desc {
  display: block;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--paper-ink-soft);
}

.page-disclaimer__doc-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  align-items: center;
  justify-content: space-between;
  margin-top: 2.5rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--paper-line);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  color: var(--paper-ink-soft);
}

.page-disclaimer__doc-footer span:first-child {
  font-family: var(--font-heading);
  font-style: italic;
  font-weight: 800;
  font-size: 1rem;
  color: var(--paper-tab);
}

@media (min-width: 560px) {
  .page-disclaimer__index ul {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 720px) {
  .page-disclaimer__paper {
    padding: calc(5.5rem + 10px) 2rem 5rem;
  }

  .page-disclaimer__doc {
    padding: 3rem 3rem 3.5rem;
  }

  .page-disclaimer__section {
    grid-template-columns: 110px 1fr;
    gap: 0 2.25rem;
    padding: 2.25rem 0;
  }

  .page-disclaimer__section-head {
    display: block;
  }

  .page-disclaimer__section-num {
    font-size: 1.7rem;
  }

  .page-disclaimer__section-body p {
    max-width: 66ch;
  }

  .page-disclaimer__feature-list,
  .page-disclaimer__fact-list {
    grid-template-columns: 1fr 1fr;
    gap: 0.55rem 1.5rem;
    margin-top: 1.1rem;
    margin-bottom: 1.2rem;
  }

  .page-disclaimer__related-list {
    grid-template-columns: repeat(2, 1fr);
  }
}