:root {
  --bg: #ffffff; --fg: #1a1a1a; --fg-soft: #4a4a4a; --fg-faint: #6e6e6e;
  --rule: #cfcfcf; --rule-soft: #e2e2e2; --box: #f6f6f6; --link: #14508c; --pre: #f2f2f2;
  --nav-bg: #f7f8f9; --here: #e7eef5;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #16181a; --fg: #e8e8e8; --fg-soft: #b8b8b8; --fg-faint: #949494;
    --rule: #3c4044; --rule-soft: #2a2d30; --box: #1f2225; --link: #86b3e0; --pre: #1b1e21;
    --nav-bg: #1b1e21; --here: #22303d;
  }
}
:root[data-theme="dark"] {
  --bg: #16181a; --fg: #e8e8e8; --fg-soft: #b8b8b8; --fg-faint: #949494;
  --rule: #3c4044; --rule-soft: #2a2d30; --box: #1f2225; --link: #86b3e0; --pre: #1b1e21;
  --nav-bg: #1b1e21; --here: #22303d;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  font-size: 16px; line-height: 1.55;
}
a { color: var(--link); }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--link); outline-offset: 2px; }

/* Buch-Layout: Inhaltsverzeichnis links, Kapitel rechts */
.buch { display: grid; grid-template-columns: 1fr; max-width: 64rem; margin: 0 auto; }
.inhalt { background: var(--nav-bg); border-bottom: 1px solid var(--rule); padding-inline: 1.25rem; padding-block: 1rem 0.8rem; }
.buchtitel { display: block; font-weight: 600; font-size: 0.95rem; color: var(--fg); text-decoration: none; margin-bottom: 0.8rem; }
.inhalt ol { list-style: none; margin: 0.6rem 0 0.2rem; padding: 0; display: grid; gap: 2px; counter-reset: kap; }
.inhalt li { counter-increment: kap; margin: 0; color: inherit; }
.inhalt li a {
  display: grid; grid-template-columns: 1.4rem 1fr; gap: 0.3rem;
  padding: 0.35rem 0.5rem; border-radius: 4px; color: var(--fg-soft); text-decoration: none; font-size: 0.95rem; line-height: 1.35;
}
.inhalt li a::before { content: counter(kap) "."; color: var(--fg-faint); font-variant-numeric: tabular-nums; }
.inhalt li a:hover { color: var(--fg); background: var(--here); }
.inhalt li a[aria-current="page"] { background: var(--here); color: var(--fg); font-weight: 600; }

.wrap { max-width: 40rem; width: 100%; padding-block: 2.5rem 4rem; padding-inline: 1.25rem; }

@media (min-width: 56rem) {
  .buch { grid-template-columns: 15rem 1fr; gap: 2.5rem; padding-inline: 1.25rem; }
  .inhalt { background: transparent; border-bottom: 0; padding: 2.6rem 0 0; }
  .inhalt .innen { position: sticky; top: 1.5rem; border-right: 1px solid var(--rule); padding-right: 1.25rem; }
  .wrap { padding-inline: 0; }
}

h1 { font-size: 1.6rem; font-weight: 600; margin: 0 0 0.4rem; text-wrap: balance; }
.kapitel { color: var(--fg-faint); font-size: 0.85rem; margin: 0 0 0.3rem; letter-spacing: 0.03em; }
.ablauf { color: var(--fg-faint); font-size: 0.92rem; margin: 0 0 2rem; padding-bottom: 1.2rem; border-bottom: 1px solid var(--rule); }
h2 { font-size: 1.08rem; font-weight: 600; margin: 2rem 0 0.5rem; text-wrap: balance; }
h2 .opt { font-weight: 400; color: var(--fg-faint); }
p { margin: 0 0 0.6rem; }
p:last-child { margin-bottom: 0; }
code {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: 0.9em;
  background: var(--pre); border: 1px solid var(--rule-soft); border-radius: 2px; padding: 0.05em 0.3em;
}
.merk { border-left: 3px solid var(--fg-faint); background: var(--box); padding: 0.6rem 0.85rem; margin: 0.7rem 0; font-size: 0.95rem; color: var(--fg-soft); }
.merk strong { color: var(--fg); }
figure { margin: 0.7rem 0; }
figure img { display: block; max-width: 100%; height: auto; border: 1px solid var(--rule); border-radius: 4px; }
figure figcaption { font-size: 0.88rem; color: var(--fg-faint); margin-top: 0.35rem; }
ul { margin: 0.4rem 0 0; padding-left: 1.2rem; }
li { margin-bottom: 0.4rem; color: var(--fg-soft); }
li strong { color: var(--fg); font-weight: 600; }

/* Schrittfolgen */
ol.schritte { margin: 0.4rem 0 0.8rem; padding-left: 1.4rem; }
ol.schritte li { color: var(--fg); padding-left: 0.2rem; margin-bottom: 0.45rem; }
ol.schritte li::marker { color: var(--fg-faint); font-variant-numeric: tabular-nums; }
.pfad { font-weight: 600; }
.pfad i { font-style: normal; font-weight: 400; color: var(--fg-faint); padding-inline: 0.2em; }

/* Eingabewerte */
.werte { overflow-x: auto; margin: 0.7rem 0 1rem; }
.werte table { border-collapse: collapse; width: 100%; font-size: 0.95rem; }
.werte th, .werte td { text-align: left; padding: 0.45rem 0.7rem 0.45rem 0; border-bottom: 1px solid var(--rule-soft); vertical-align: top; }
.werte th { font-weight: 400; color: var(--fg-faint); white-space: nowrap; width: 1%; padding-right: 1.2rem; }
.werte td { overflow-wrap: anywhere; }
.werte tr:last-child th, .werte tr:last-child td { border-bottom: 0; }
.werte .platzhalter { color: var(--fg-soft); font-style: italic; }

/* Blättern */
.blaettern { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; margin-top: 2.5rem; padding-top: 1rem; border-top: 1px solid var(--rule); font-size: 0.95rem; }
.blaettern a { text-decoration: none; display: grid; gap: 0.1rem; }
.blaettern a span { font-size: 0.8rem; color: var(--fg-faint); }
.blaettern .weiter { margin-left: auto; text-align: right; }

footer { margin-top: 1.5rem; font-size: 0.85rem; color: var(--fg-faint); }