.page-disclaimer {
  background: var(--color-bg, #1A1A2E);
  color: var(--color-text-body, #E0E0E0);
  font-family: var(--font-body, 'Noto Sans SC', sans-serif);
  min-height: 100vh;
  padding: 0;
  position: relative;
}

/* ── 面包屑 ── */
.page-disclaimer .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1.25rem 0 0.5rem;
  font-size: 0.85rem;
  color: var(--color-text-body, #E0E0E0);
  opacity: 0.75;
}
.page-disclaimer .breadcrumb a {
  color: var(--color-primary, #D4AF37);
  text-decoration: none;
  transition: opacity 0.2s;
}
.page-disclaimer .breadcrumb a:hover {
  opacity: 0.7;
}
.page-disclaimer .breadcrumb-separator {
  color: var(--color-primary-dark, #B8860B);
  font-family: var(--font-mono, monospace);
}
.page-disclaimer .breadcrumb-item.current {
  color: var(--color-text-primary, #FFD700);
  font-weight: 500;
}

/* ── 标题区块 ── */
.page-disclaimer .page-header-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 1.5rem 0 2rem;
  border-bottom: 1px solid var(--color-border, rgba(212,175,55,0.3));
  margin-bottom: 2rem;
  position: relative;
}
.page-disclaimer .header-emblem {
  display: block;
  width: 70px;
  height: 70px;
  object-fit: contain;
  margin-bottom: 1rem;
  filter: drop-shadow(0 2px 12px rgba(212,175,55,0.3));
}
.page-disclaimer .page-title {
  font-family: var(--font-heading, 'Noto Serif SC', serif);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-text-primary, #FFD700);
  margin: 0 0 0.5rem;
  letter-spacing: 0.06em;
  line-height: 1.2;
}
.page-disclaimer .page-subtitle {
  font-size: 1rem;
  color: var(--color-text-body, #E0E0E0);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.6;
  opacity: 0.9;
}

/* ── 章节列表容器 ── */
.page-disclaimer .sections-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding-bottom: 2.5rem;
}

/* ── 单个章节卡片 ── */
.page-disclaimer .section-block {
  background: var(--color-surface, #16213E);
  border-radius: 12px;
  box-shadow: var(--card-shadow, 0 4px 20px rgba(0,0,0,0.4));
  border-left: 4px solid var(--color-primary, #D4AF37);
  transition: box-shadow 0.3s ease, transform 0.2s ease;
  position: relative;
  overflow: hidden;
}
.page-disclaimer .section-block::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary, #D4AF37), transparent);
  opacity: 0.4;
}
.page-disclaimer .section-block:hover {
  box-shadow: var(--card-stack-shadow, 0 8px 32px rgba(0,0,0,0.5));
}
.page-disclaimer .section-block:not(:last-child)::after {
  content: '';
  display: block;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-primary-dark, #B8860B), transparent);
  opacity: 0.25;
  margin: 0 1.5rem;
}

/* ── details / summary ── */
.page-disclaimer .section-details {
  display: block;
}
.page-disclaimer .section-summary {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background 0.2s;
}
.page-disclaimer .section-summary::-webkit-details-marker {
  display: none;
}
.page-disclaimer .section-summary::marker {
  display: none;
  content: '';
}
.page-disclaimer .section-summary:hover {
  background: rgba(212,175,55,0.04);
}
.page-disclaimer .section-index {
  font-family: var(--font-mono, 'JetBrains Mono', monospace);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--color-primary, #D4AF37);
  line-height: 1;
  min-width: 2.4rem;
  letter-spacing: 0.02em;
}
.page-disclaimer .section-heading {
  font-family: var(--font-heading, 'Noto Serif SC', serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text-primary, #FFD700);
  margin: 0;
  flex: 1;
  line-height: 1.3;
}
.page-disclaimer .section-toggle-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.6rem;
  height: 1.6rem;
  border: 1px solid var(--color-border, rgba(212,175,55,0.3));
  border-radius: 50%;
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-primary, #D4AF37);
  transition: transform 0.3s ease, background 0.2s;
  flex-shrink: 0;
  line-height: 1;
}
.page-disclaimer .section-toggle-icon::before {
  content: '+';
  display: block;
  transition: transform 0.3s ease;
}
.page-disclaimer .section-details[open] .section-toggle-icon::before {
  content: '−';
  transform: rotate(0deg);
}
.page-disclaimer .section-details[open] .section-toggle-icon {
  background: rgba(212,175,55,0.12);
  border-color: var(--color-primary, #D4AF37);
}

/* ── 章节内容 ── */
.page-disclaimer .section-content {
  padding: 0 1.5rem 1.5rem;
  animation: page-disclaimer-fadeIn 0.3s ease;
}
@keyframes page-disclaimer-fadeIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}
.page-disclaimer .section-content p {
  margin: 0 0 1rem;
  line-height: 1.75;
  font-size: 0.95rem;
  color: var(--color-text-body, #E0E0E0);
}
.page-disclaimer .section-content p:last-child {
  margin-bottom: 0;
}

/* ── 规则列表 ── */
.page-disclaimer .rule-list {
  margin: 0.75rem 0 0;
  padding: 0 0 0 1.25rem;
  list-style: none;
}
.page-disclaimer .rule-list li {
  position: relative;
  padding: 0.4rem 0 0.4rem 1.2rem;
  line-height: 1.7;
  font-size: 0.95rem;
  color: var(--color-text-body, #E0E0E0);
}
.page-disclaimer .rule-list li::before {
  content: '◆';
  position: absolute;
  left: 0;
  top: 0.5rem;
  font-size: 0.45rem;
  color: var(--color-primary, #D4AF37);
  opacity: 0.7;
}

/* ── 注释文本 ── */
.page-disclaimer .note-text {
  font-size: 0.9rem;
  color: var(--color-accent, #00BCD4);
  opacity: 0.85;
  padding: 0.75rem 0 0;
  border-top: 1px solid rgba(0,188,212,0.15);
  margin-top: 0.75rem;
}

/* ── 联系卡片 ── */
.page-disclaimer .contact-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
  background: rgba(0,0,0,0.18);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  margin: 1rem 0 0;
  border: 1px solid var(--color-border, rgba(212,175,55,0.15));
}
.page-disclaimer .contact-item {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.page-disclaimer .contact-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary-dark, #B8860B);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-family: var(--font-mono, monospace);
}
.page-disclaimer .contact-value {
  font-size: 0.95rem;
  color: var(--color-text-body, #E0E0E0);
  word-break: break-word;
}

/* ── 底部链接区域 ── */
.page-disclaimer .footer-links-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--color-border, rgba(212,175,55,0.2));
  margin-top: 0.5rem;
  text-align: center;
}
.page-disclaimer .related-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem 0.6rem;
  font-size: 0.95rem;
}
.page-disclaimer .related-label {
  color: var(--color-text-body, #E0E0E0);
  opacity: 0.7;
  font-weight: 500;
}
.page-disclaimer .related-link {
  color: var(--color-primary, #D4AF37);
  text-decoration: none;
  font-weight: 500;
  transition: opacity 0.2s;
}
.page-disclaimer .related-link:hover {
  opacity: 0.75;
  text-decoration: underline;
}
.page-disclaimer .link-separator {
  color: var(--color-primary-dark, #B8860B);
  opacity: 0.5;
  font-family: var(--font-mono, monospace);
}
.page-disclaimer .footer-decor {
  display: block;
  width: 100px;
  height: 100px;
  object-fit: contain;
  opacity: 0.75;
  filter: drop-shadow(0 4px 20px rgba(212,175,55,0.15));
  transition: opacity 0.3s, transform 0.3s;
}
.page-disclaimer .footer-decor:hover {
  opacity: 1;
  transform: scale(1.04);
}

/* ── 回到顶部 ── */
.page-disclaimer .back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary, #D4AF37);
  color: var(--color-bg, #1A1A2E);
  border: none;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(212,175,55,0.3);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
}
.page-disclaimer .back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 28px rgba(212,175,55,0.45);
}
.page-disclaimer .back-to-top:active {
  transform: scale(0.94);
}

/* ── 响应式：平板及以上 ── */
@media (min-width: 640px) {
  .page-disclaimer .page-header-block {
    padding: 2rem 0 2.5rem;
  }
  .page-disclaimer .page-title {
    font-size: 2.8rem;
  }
  .page-disclaimer .page-subtitle {
    font-size: 1.1rem;
  }
  .page-disclaimer .section-summary {
    padding: 1.5rem 2rem;
  }
  .page-disclaimer .section-content {
    padding: 0 2rem 1.75rem;
  }
  .page-disclaimer .section-index {
    font-size: 1.6rem;
    min-width: 2.8rem;
  }
  .page-disclaimer .section-heading {
    font-size: 1.4rem;
  }
  .page-disclaimer .contact-card {
    grid-template-columns: 1fr 1fr;
    padding: 1.5rem 2rem;
  }
  .page-disclaimer .footer-links-block {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
    padding: 2.5rem 0 3.5rem;
  }
  .page-disclaimer .back-to-top {
    bottom: 2.5rem;
    right: 2.5rem;
    width: 48px;
    height: 48px;
    font-size: 1.5rem;
  }
}

/* ── 响应式：桌面 ── */
@media (min-width: 1024px) {
  .page-disclaimer .breadcrumb {
    padding: 1.5rem 0 0.75rem;
  }
  .page-disclaimer .page-header-block {
    padding: 2.5rem 0 3rem;
  }
  .page-disclaimer .page-title {
    font-size: 3.2rem;
  }
  .page-disclaimer .page-subtitle {
    font-size: 1.15rem;
  }
  .page-disclaimer .sections-list {
    gap: 1.5rem;
    padding-bottom: 3rem;
  }
  .page-disclaimer .section-summary {
    padding: 1.75rem 2.5rem;
  }
  .page-disclaimer .section-content {
    padding: 0 2.5rem 2rem;
  }
  .page-disclaimer .section-index {
    font-size: 1.8rem;
    min-width: 3rem;
  }
  .page-disclaimer .section-heading {
    font-size: 1.5rem;
  }
  .page-disclaimer .contact-card {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    padding: 1.75rem 2.5rem;
  }
  .page-disclaimer .footer-links-block {
    padding: 3rem 0 4rem;
  }
  .page-disclaimer .back-to-top {
    bottom: 3rem;
    right: 3rem;
    width: 52px;
    height: 52px;
    font-size: 1.6rem;
  }
}