:root {
  --fg: #1f2328;
  --muted: #59636e;
  --bg: #ffffff;
  --accent: #0969da;
  --border: #d1d9e0;
  --code-bg: #f6f8fa;
  --quote-border: #d0d7de;
}
@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e6edf3;
    --muted: #9198a1;
    --bg: #0d1117;
    --accent: #4493f8;
    --border: #30363d;
    --code-bg: #161b22;
    --quote-border: #3d444d;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--fg);
  background: var(--bg);
  line-height: 1.6;
  margin: 0;
  padding: 0 16px 96px;
  font-size: 16px;
}
.wrap { max-width: 860px; margin: 0 auto; }
#title-block-header { display: none; }

/* Button-Bar */
.bar {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  margin: 0 -16px 28px;
  padding: 12px 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}
.bar .brand { font-weight: 600; margin-right: auto; color: var(--muted); font-size: 14px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  padding: 7px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  color: var(--fg);
  background: var(--code-bg);
  transition: background .12s ease, border-color .12s ease;
}
.btn:hover { border-color: var(--accent); }
.btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn.primary:hover { filter: brightness(1.08); }

h1, h2, h3, h4 { line-height: 1.25; margin: 1.6em 0 .6em; font-weight: 600; }
h1 { font-size: 2em; border-bottom: 1px solid var(--border); padding-bottom: .3em; }
h2 { font-size: 1.5em; border-bottom: 1px solid var(--border); padding-bottom: .3em; }
h3 { font-size: 1.2em; }
a { color: var(--accent); }
p, li { color: var(--fg); }
blockquote {
  margin: 1em 0; padding: .2em 1em; color: var(--muted);
  border-left: .25em solid var(--quote-border);
}
code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
  background: var(--code-bg); padding: .2em .4em; border-radius: 6px; font-size: 85%;
}
pre {
  background: var(--code-bg); padding: 16px; border-radius: 10px;
  overflow: auto; border: 1px solid var(--border); line-height: 1.45;
}
pre code { background: none; padding: 0; font-size: 85%; }
table { border-collapse: collapse; display: block; overflow: auto; width: max-content; max-width: 100%; margin: 1em 0; }
th, td { border: 1px solid var(--border); padding: 7px 13px; }
th { background: var(--code-bg); font-weight: 600; }
tr:nth-child(2n) td { background: var(--code-bg); }
hr { border: none; border-top: 1px solid var(--border); margin: 2em 0; }
img { max-width: 100%; }

/* Inline-TOC von pandoc */
#TOC { background: var(--code-bg); border: 1px solid var(--border); border-radius: 10px; padding: 12px 18px; margin: 0 0 28px; }
#TOC ul { margin: .3em 0; }
.footer { margin-top: 48px; padding-top: 18px; border-top: 1px solid var(--border); color: var(--muted); font-size: 13px; }