/* Vanblog Sepia Book（仅暗色生效）：阅读舒适——暖暗纸、低刺激、护眼 */
html.dark .markdown-body {
  --vb-paper: rgba(2, 6, 23, 0.50);
  --vb-text: rgba(226, 232, 240, 0.92);
  --vb-muted: rgba(148, 163, 184, 0.85);
  --vb-accent: #f59e0b;
  --vb-border: rgba(226, 232, 240, 0.16);
  color: var(--vb-text);
  line-height: 2.15;
  letter-spacing: 0.3px;
  font-size: 16px;
  font-family: ui-serif, Georgia, Cambria, "Times New Roman", Times, serif;
  position: relative;
}

html.dark .markdown-body::before {
  content: "";
  position: absolute;
  inset: -16px;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(circle at 1px 1px, rgba(226, 232, 240, 0.06) 0 1px, transparent 1.5px) 0 0/20px 20px,
    radial-gradient(680px 260px at 50% 0%, rgba(245, 158, 11, 0.12), transparent 60%);
  opacity: 0.9;
}

html.dark .markdown-body p { text-align: justify; }

html.dark .markdown-body h1,
html.dark .markdown-body h2,
html.dark .markdown-body h3 { border: 0; }

html.dark .markdown-body h1 {
  text-align: center;
  font-variant: small-caps;
  border-top: 3px double var(--vb-border);
  border-bottom: 3px double var(--vb-border);
  padding: 16px 0;
  margin: 1.5em 0 1.2em;
  font-size: 2.1rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  position: relative;
}

html.dark .markdown-body h1::before,
html.dark .markdown-body h1::after {
  content: "❦";
  position: absolute;
  color: var(--vb-accent);
  opacity: 0.6;
  font-size: 0.6em;
}

html.dark .markdown-body h1::before {
  left: 10%;
}

html.dark .markdown-body h1::after {
  right: 10%;
}

html.dark .markdown-body h2 {
  display: inline-block;
  padding-bottom: 8px;
  margin-top: 1.8em;
  margin-bottom: 0.9em;
  border-bottom: 3px solid rgba(245, 158, 11, 0.35);
  font-weight: 700;
  letter-spacing: 0.02em;
}

html.dark .markdown-body blockquote {
  border: 0;
  border-left: 4px solid rgba(245, 158, 11, 0.40);
  background: rgba(2, 6, 23, 0.50);
  padding: 16px 18px;
  margin: 1.5em 0;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.20);
  border-radius: 0 12px 12px 0;
  position: relative;
}

html.dark .markdown-body blockquote::before {
  content: "❝";
  position: absolute;
  left: -12px;
  top: -8px;
  color: var(--vb-accent);
  font-size: 2em;
  opacity: 0.5;
}

html.dark .markdown-body a {
  color: rgba(226, 232, 240, 0.92);
  text-decoration: none;
  background: linear-gradient(transparent 60%, rgba(245, 158, 11, 0.18) 0);
}
html.dark .markdown-body a:hover {
  background: linear-gradient(transparent 60%, rgba(245, 158, 11, 0.28) 0);
}

html.dark .markdown-body :not(pre) > code {
  background: rgba(226, 232, 240, 0.08);
  border: 1px solid rgba(226, 232, 240, 0.14);
  border-radius: 8px;
  padding: 0.15em 0.45em;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

html.dark .markdown-body .code-block-wrapper {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(226, 232, 240, 0.14);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}
html.dark .markdown-body .code-block-wrapper .header-right {
  background: rgba(2, 6, 23, 0.55);
  border-bottom: 1px dashed rgba(226, 232, 240, 0.16);
}

html.dark .markdown-body hr {
  border: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(226, 232, 240, 0.28), transparent);
  opacity: 0.85;
}