/* area Markenrichtlinie. Die Werte der Marke stehen in :root, alles andere baut darauf. */

@font-face { font-family: "Archivo"; src: url("../fonts/archivo-variabel-latin.woff2") format("woff2"); font-weight: 100 900; font-stretch: 62% 125%; font-display: swap; unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: "Archivo"; src: url("../fonts/archivo-variabel-latin-ext.woff2") format("woff2"); font-weight: 100 900; font-stretch: 62% 125%; font-display: swap; unicode-range: U+0100-02AF, U+0304, U+0308, U+0329, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; }
@font-face { font-family: "IBM Plex Sans"; src: url("../fonts/ibm-plex-sans-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("../fonts/ibm-plex-sans-500.woff2") format("woff2"); font-weight: 500; font-display: swap; }
@font-face { font-family: "IBM Plex Sans"; src: url("../fonts/ibm-plex-sans-600.woff2") format("woff2"); font-weight: 600; font-display: swap; }
@font-face { font-family: "IBM Plex Mono"; src: url("../fonts/ibm-plex-mono-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }

:root {
  color-scheme: light;
  --petrol: #00303f;
  --petrol-800: #0b4152;
  --petrol-100: #e3eef1;
  --nacht: #001317;
  --glut: #e95801;
  --glut-tief: #b34200;
  --glut-50: #fff3e8;
  --pulver: #f29000;
  --gruen: #4cae45;
  --gruen-tief: #2b6e27;
  --gruen-50: #edf7ec;
  --schiefer: #414954;
  --weiss: #ffffff;
  --grund: #f4f6f7;
  --linie: #dde3e6;

  --schrift-titel: "Archivo", "IBM Plex Sans", Arial, sans-serif;
  --schrift-text: "IBM Plex Sans", Arial, sans-serif;
  --schrift-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;

  --leiste: 17rem;
  --rand: clamp(1rem, 4vw, 3.5rem);
  --spalte: 62rem;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 1.5rem; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--grund);
  color: var(--nacht);
  font: 400 1rem/1.6 var(--schrift-text);
  font-feature-settings: "tnum" 1;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--glut-tief); text-underline-offset: 0.18em; }
a:hover { color: var(--nacht); }
:focus-visible { outline: 3px solid var(--pulver); outline-offset: 2px; }
h1, h2, h3, h4 { font-family: var(--schrift-titel); line-height: 1.12; margin: 0 0 0.6em; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.9rem, 3.4vw, 2.75rem); font-weight: 800; font-stretch: 112%; }
h3 { font-size: 1.3rem; font-weight: 700; margin-top: 2.6rem; }
h4 { font-size: 1rem; font-weight: 700; margin-top: 1.4rem; }
p { margin: 0 0 1em; max-width: 44rem; }
.mono, code { font-family: var(--schrift-mono); font-size: 0.9em; }
.zahl { font-variant-numeric: tabular-nums; white-space: nowrap; }
.klein { font-size: 0.875rem; color: var(--schiefer); }

/* ---------------------------------------------------------------- Gerüst -- */
.leiste {
  position: fixed; inset: 0 auto 0 0; width: var(--leiste);
  background: var(--petrol); color: var(--weiss);
  display: flex; flex-direction: column; padding: 1.75rem 1.5rem; overflow-y: auto; z-index: 5;
}
.leiste-logo img { width: 100%; max-width: 12rem; }
.leiste-titel { font: 400 0.72rem/1.4 var(--schrift-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--petrol-100); margin: 1.25rem 0 1.75rem; }
.leiste nav ol { list-style: none; margin: 0; padding: 0; counter-reset: k; }
.leiste nav li { counter-increment: k; }
.leiste nav a {
  display: flex; gap: 0.8rem; align-items: baseline; padding: 0.5rem 0.6rem; margin: 0 -0.6rem;
  color: var(--weiss); text-decoration: none; border-left: 3px solid transparent; font-weight: 500;
}
.leiste nav a::before { content: counter(k, decimal-leading-zero); font: 400 0.75rem var(--schrift-mono); color: var(--petrol-100); }
.leiste nav a:hover { background: var(--petrol-800); }
.leiste nav a[aria-current="true"] { border-left-color: var(--glut); background: var(--petrol-800); }
.leiste-fuss { margin-top: auto; padding-top: 2rem; font-size: 0.8rem; color: var(--petrol-100); }
.leiste-fuss a { color: var(--weiss); }

.kopf-schmal { display: none; }
main { margin-left: var(--leiste); }
.kapitel { padding: clamp(3rem, 7vw, 6rem) var(--rand); border-top: 1px solid var(--linie); }
.kapitel > * { max-width: var(--spalte); }
.kapitel-marke {
  display: flex; align-items: baseline; gap: 1rem; margin-bottom: 1rem;
  font: 400 0.75rem var(--schrift-mono); letter-spacing: 0.1em; text-transform: uppercase; color: var(--schiefer);
}
.kapitel-marke b { font: 900 2.6rem/1 var(--schrift-titel); font-stretch: 125%; color: var(--glut); letter-spacing: 0; }
.kapitel-marke::after { content: ""; flex: 1; height: 1px; background: var(--schiefer); transform: translateY(-0.3rem); }
.vorspann { font-size: 1.2rem; line-height: 1.55; max-width: 44rem; }

/* --------------------------------------------------------------- Auftakt -- */
.auftakt {
  position: relative; overflow: hidden; background: var(--petrol); color: var(--weiss);
  padding: clamp(3rem, 8vw, 6.5rem) var(--rand) 0;
  min-height: min(88vh, 56rem); display: flex; flex-direction: column;
}
.auftakt-logo { width: min(34rem, 88%); }
.auftakt h1 {
  margin: clamp(2.5rem, 7vh, 4.5rem) 0 1rem; font-size: clamp(2.6rem, 6.4vw, 5.2rem);
  font-weight: 900; font-stretch: 118%; letter-spacing: -0.02em; line-height: 1;
}
.auftakt p { color: var(--petrol-100); font-size: 1.15rem; max-width: 36rem; }
.auftakt-stand { font: 400 0.78rem var(--schrift-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--pulver); }

/* Förderkette: eine Schiene, an Haken hängen Musterbleche in den Hausfarben. Reine Form. */
.kette { position: relative; margin-top: auto; height: 11rem; }
.kette::before { content: ""; position: absolute; left: calc(var(--rand) * -1); right: calc(var(--rand) * -1); top: 1.5rem; height: 6px; background: var(--petrol-800); border-top: 1px solid #1d5468; }
.kette ol { list-style: none; margin: 0; padding: 0; display: flex; gap: clamp(1.4rem, 5vw, 4.5rem); position: absolute; top: 1.5rem; left: 0; }
.kette li { position: relative; width: clamp(2.6rem, 6vw, 4.4rem); padding-top: 2.4rem; }
.kette li::before { content: ""; position: absolute; left: 50%; top: 0; width: 2px; height: 2.6rem; background: #6f8790; transform: translateX(-50%); }
.kette li span {
  display: block; aspect-ratio: 3 / 4; background: var(--f); border-radius: 2px;
  -webkit-mask: radial-gradient(circle at 50% 0.55rem, transparent 0.24rem, #000 0.26rem);
          mask: radial-gradient(circle at 50% 0.55rem, transparent 0.24rem, #000 0.26rem);
  box-shadow: inset 0 -0.6rem 0.8rem rgb(0 0 0 / 0.12);
}
.kette li:nth-child(odd) span { transform: rotate(-1.5deg); }
.kette li:nth-child(3n) span { transform: rotate(1.2deg); }

/* ---------------------------------------------------------------- Bausteine -- */
.raster { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fill, minmax(min(15rem, 100%), 1fr)); }
.raster-2 { display: grid; gap: 1.5rem; grid-template-columns: repeat(auto-fit, minmax(min(24rem, 100%), 1fr)); }
.karte { background: var(--weiss); border: 1px solid var(--linie); padding: 1.25rem 1.4rem; }
.karte h4:first-child, .karte h3:first-child { margin-top: 0; }

.typenschild { background: var(--weiss); border: 1px solid var(--linie); border-top: 4px solid var(--petrol); }
.typenschild dl { margin: 0; display: grid; grid-template-columns: max-content 1fr; }
.typenschild dt, .typenschild dd { margin: 0; padding: 0.55rem 1.1rem; border-bottom: 1px solid var(--linie); }
.typenschild dt { font: 400 0.72rem/1.9 var(--schrift-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--schiefer); }
.typenschild dd { font-weight: 500; }

.vergleich { width: 100%; border-collapse: collapse; background: var(--weiss); border: 1px solid var(--linie); }
.vergleich th, .vergleich td { text-align: left; vertical-align: top; padding: 0.8rem 1rem; border-bottom: 1px solid var(--linie); }
.vergleich thead th { font: 400 0.72rem var(--schrift-mono); letter-spacing: 0.08em; text-transform: uppercase; background: var(--grund); }
.vergleich td.nein { color: var(--schiefer); text-decoration: line-through; text-decoration-color: var(--glut); }
.vergleich td.ja { font-weight: 500; }

.regeln { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.6rem; }
.regeln li { padding-left: 1.4rem; position: relative; max-width: 44rem; }
.regeln li::before { content: ""; position: absolute; left: 0; top: 0.6em; width: 0.6rem; height: 0.6rem; background: var(--glut); }
.regeln.gruen li::before { background: var(--gruen); border-radius: 50%; }

/* ----------------------------------------------------------------- Logo -- */
.buehne { display: grid; place-items: center; padding: 2.5rem 2rem; min-height: 12rem; border: 1px solid var(--linie); background: var(--weiss); }
.buehne img { width: 100%; max-width: 16rem; }
.buehne.petrol { background: var(--petrol); border-color: var(--petrol); }
.buehne.nacht { background: var(--nacht); border-color: var(--nacht); }
.buehne.glut { background: var(--glut); border-color: var(--glut); }
.buehne.grund { background: var(--grund); }
.buehne-text { padding: 0.7rem 0.1rem 0; font-size: 0.9rem; }
.buehne-text strong { display: block; }
.buehne.schmal img { max-width: 7rem; }

.aufbau { width: 100%; height: auto; background: var(--weiss); border: 1px solid var(--linie); }
.aufbau .k-form path, .aufbau .k-form line, .aufbau .k-form rect { fill: none; stroke: var(--nacht); stroke-width: 0.35; }
.aufbau .k-zone { fill: rgb(233 88 1 / 0.06); stroke: var(--glut); stroke-width: 0.4; stroke-dasharray: 2 1.5; }
.aufbau .k-box { fill: none; stroke: var(--schiefer); stroke-width: 0.25; }
.aufbau .k-hilfs { stroke: var(--pulver); stroke-width: 0.3; stroke-dasharray: 1 1; }
.aufbau .k-x { fill: rgb(242 144 0 / 0.25); stroke: var(--glut); stroke-width: 0.3; }
.aufbau .k-t { font: 400 9px var(--schrift-mono); fill: var(--glut-tief); }

.masse { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(12rem, 100%), 1fr)); gap: 1rem; margin-top: 1.25rem; }
.mass { background: var(--weiss); border: 1px solid var(--linie); padding: 1rem 1.1rem; }
.mass b { display: block; font: 800 1.6rem/1.1 var(--schrift-titel); font-stretch: 112%; }
.mass span { font-size: 0.875rem; color: var(--schiefer); }
.mindest { display: flex; align-items: flex-end; gap: 2rem; flex-wrap: wrap; padding: 1.5rem; background: var(--weiss); border: 1px solid var(--linie); margin-top: 1rem; }
.mindest figure { margin: 0; }
.mindest figcaption { font: 400 0.75rem var(--schrift-mono); color: var(--schiefer); margin-top: 0.5rem; }

.falsch { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(min(13rem, 100%), 1fr)); }
.falsch figure { margin: 0; }
.falsch .buehne { min-height: 9rem; padding: 1.5rem; position: relative; overflow: hidden; }
.falsch .buehne::after {
  content: ""; position: absolute; top: 0.6rem; right: 0.6rem; width: 1.4rem; height: 1.4rem; border-radius: 50%;
  background: var(--glut-tief) no-repeat center / 0.8rem url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 10 10'%3E%3Cpath d='M2 2l6 6M8 2l-6 6' stroke='%23fff' stroke-width='1.8' stroke-linecap='round'/%3E%3C/svg%3E");
}
.falsch figcaption { font-size: 0.875rem; padding-top: 0.5rem; }
.f-verzerrt img { transform: scaleX(1.45) scaleY(0.8); }
.f-gedreht img { transform: rotate(-12deg); }
.f-schatten img { filter: drop-shadow(4px 5px 0 var(--pulver)) drop-shadow(0 0 6px rgb(0 0 0 / 0.5)); }
.f-foto { background: url("../bild/pulverwolke.jpg") center / cover; }
.f-neu { flex-direction: column; }
.f-neu span { display: block; font: italic 400 1.15rem Georgia, serif; color: var(--schiefer); border-top: 1px solid var(--schiefer); padding-top: 0.2rem; max-width: 16rem; width: 100%; text-align: left; }

/* ---------------------------------------------------------------- Farbe -- */
.anteile { display: flex; height: 4.5rem; border: 1px solid var(--linie); margin: 1.25rem 0 0.5rem; }
.anteile span { display: flex; align-items: flex-end; padding: 0.4rem 0.5rem; font: 400 0.72rem var(--schrift-mono); }
.anteile-legende { font-size: 0.875rem; color: var(--schiefer); }

.bleche { display: grid; gap: 1.25rem; grid-template-columns: repeat(auto-fill, minmax(min(11.5rem, 100%), 1fr)); margin-top: 1rem; }
.blech { margin: 0; background: var(--weiss); border: 1px solid var(--linie); display: flex; flex-direction: column; }
.blech-flaeche { position: relative; aspect-ratio: 4 / 3; background: var(--f); }
.blech-hell .blech-flaeche { box-shadow: inset 0 0 0 1px var(--linie); }
.blech-loch { position: absolute; top: 0.7rem; left: 50%; width: 0.75rem; height: 0.75rem; margin-left: -0.375rem; border-radius: 50%; background: var(--grund); box-shadow: inset 0 1px 2px rgb(0 0 0 / 0.35); }
.blech figcaption { padding: 0.8rem 0.9rem 1rem; display: flex; flex-direction: column; gap: 0.1rem; }
.blech strong { font-family: var(--schrift-titel); font-size: 1.05rem; margin-bottom: 0.2rem; }
.wert {
  align-self: flex-start; font: 400 0.9rem var(--schrift-mono); color: var(--nacht); background: none;
  border: 0; border-bottom: 1px dashed var(--schiefer); padding: 0; cursor: copy;
}
.wert[data-kopiert]::after { content: " kopiert"; color: var(--gruen-tief); }
.wert-zeile { font: 400 0.78rem var(--schrift-mono); color: var(--schiefer); }
.token { color: var(--petrol-800); }
.rolle { font-size: 0.82rem; margin-top: 0.45rem; line-height: 1.45; }

.tabelle-rahmen { overflow-x: auto; border: 1px solid var(--linie); background: var(--weiss); }
.kontrast { width: 100%; border-collapse: collapse; font-size: 0.9rem; min-width: 46rem; }
.kontrast th, .kontrast td { padding: 0.55rem 0.8rem; border-bottom: 1px solid var(--linie); text-align: left; }
.kontrast thead th { font: 400 0.7rem var(--schrift-mono); letter-spacing: 0.08em; text-transform: uppercase; background: var(--grund); }
.probe { display: inline-block; padding: 0.15rem 0.5rem; font-weight: 600; border: 1px solid rgb(0 0 0 / 0.08); }
.stufe { display: inline-block; padding: 0.1rem 0.5rem; font-size: 0.8rem; font-weight: 500; }
.stufe-aaa, .stufe-aa { background: var(--gruen-50); color: var(--gruen-tief); }
.stufe-gross { background: var(--glut-50); color: var(--glut-tief); }
.stufe-nein { background: #f6e6e3; color: #8a1f0c; }

/* --------------------------------------------------------------- Schrift -- */
.muster { background: var(--weiss); border: 1px solid var(--linie); padding: 1.5rem 1.6rem; }
.muster-name { font: 400 0.72rem var(--schrift-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--schiefer); display: flex; justify-content: space-between; gap: 1rem; border-bottom: 1px solid var(--linie); padding-bottom: 0.6rem; margin-bottom: 1rem; }
.muster-gross { font-size: clamp(3rem, 8vw, 5.5rem); line-height: 1; margin: 0 0 0.75rem; }
.muster-archivo { font-family: var(--schrift-titel); }
.muster-plex { font-family: var(--schrift-text); }
.muster-mono { font-family: var(--schrift-mono); }
.zeichen { font-size: 1.05rem; letter-spacing: 0.04em; color: var(--schiefer); word-break: break-all; }
.stufen { width: 100%; border-collapse: collapse; background: var(--weiss); border: 1px solid var(--linie); }
.stufen td, .stufen th { padding: 0.7rem 1rem; border-bottom: 1px solid var(--linie); text-align: left; vertical-align: baseline; }
.stufen thead th { font: 400 0.7rem var(--schrift-mono); letter-spacing: 0.08em; text-transform: uppercase; background: var(--grund); }

/* ---------------------------------------------------------------- Bilder -- */
.bilder { display: grid; gap: 1rem; grid-template-columns: 2fr 1fr; grid-auto-rows: 15rem; }
.bilder figure { margin: 0; position: relative; overflow: hidden; background: var(--nacht); }
.bilder figure:first-child { grid-row: span 2; }
.bilder img { width: 100%; height: 100%; object-fit: cover; }
.bilder figcaption {
  position: absolute; left: 0.75rem; right: 0.75rem; bottom: 0.75rem; padding: 0.55rem 0.8rem;
  background: rgb(0 48 63 / 0.62); -webkit-backdrop-filter: blur(12px) saturate(1.2); backdrop-filter: blur(12px) saturate(1.2);
  color: var(--weiss); font-size: 0.82rem; line-height: 1.4;
}
.bilder figcaption b { color: var(--pulver); font-weight: 600; }
.bildregel-nein figcaption b { color: #ff9a7a; }

/* ------------------------------------------------------ Geschäftspapiere -- */
/* Das Blatt rechnet in Millimetern: 1 mm = 100cqw / 210. */
.blaetter { display: grid; gap: 2rem; grid-template-columns: repeat(auto-fit, minmax(min(21rem, 100%), 1fr)); align-items: start; }
.blatt-rahmen figcaption { font-size: 0.875rem; color: var(--schiefer); margin-top: 0.6rem; }
.blatt-rahmen { margin: 0; }
.blatt {
  --mm: calc(100cqw / 210);
  container-type: inline-size; position: relative; aspect-ratio: 210 / 297; background: var(--weiss);
  box-shadow: 0 1px 2px rgb(0 19 23 / 0.1), 0 10px 30px rgb(0 19 23 / 0.1); overflow: hidden;
}
.blatt-innen { position: absolute; inset: 0; font-size: calc(100cqw / 210 * 3.6); line-height: 1.45; color: var(--nacht); }
.blatt-innen > * { position: absolute; }
.b-logo { top: calc(var(--mm) * 14); right: calc(var(--mm) * 20); width: calc(var(--mm) * 52); }
.b-ruecksende { top: calc(var(--mm) * 50); left: calc(var(--mm) * 25); width: calc(var(--mm) * 85); font-size: calc(var(--mm) * 2.3); color: var(--schiefer); border-bottom: calc(var(--mm) * 0.2) solid var(--schiefer); padding-bottom: calc(var(--mm) * 0.6); }
.b-anschrift { top: calc(var(--mm) * 56); left: calc(var(--mm) * 25); width: calc(var(--mm) * 85); }
.b-info { top: calc(var(--mm) * 50); left: calc(var(--mm) * 125); width: calc(var(--mm) * 65); font-size: calc(var(--mm) * 2.9); display: grid; grid-template-columns: auto 1fr; column-gap: calc(var(--mm) * 3); }
.b-info dt { color: var(--schiefer); }
.b-info dd { margin: 0; font-family: var(--schrift-mono); font-size: 0.95em; }
.b-betreff { top: calc(var(--mm) * 103); left: calc(var(--mm) * 25); right: calc(var(--mm) * 20); font-family: var(--schrift-titel); font-weight: 700; font-size: calc(var(--mm) * 4.6); }
.b-text { top: calc(var(--mm) * 116); left: calc(var(--mm) * 25); right: calc(var(--mm) * 20); }
.b-text p { margin: 0 0 calc(var(--mm) * 3.5); max-width: none; }
.b-fuss { bottom: calc(var(--mm) * 10); left: calc(var(--mm) * 25); right: calc(var(--mm) * 20); font-size: calc(var(--mm) * 2.25); color: var(--schiefer); display: grid; grid-template-columns: repeat(4, 1fr); gap: calc(var(--mm) * 3); border-top: calc(var(--mm) * 0.25) solid var(--schiefer); padding-top: calc(var(--mm) * 2); line-height: 1.5; }
.b-fuss b { color: var(--nacht); font-weight: 600; }
.b-marke { left: 0; width: calc(var(--mm) * 5); height: 0; border-top: calc(var(--mm) * 0.25) solid var(--schiefer); }
.b-falz1 { top: calc(var(--mm) * 105); }
.b-loch { top: calc(var(--mm) * 148.5); width: calc(var(--mm) * 7); }
.b-falz2 { top: calc(var(--mm) * 210); }
.b-band { top: 0; left: 0; right: 0; height: calc(var(--mm) * 3); background: linear-gradient(90deg, var(--glut) 0 50%, var(--pulver) 50% 100%); }
.platzhalter { background: var(--glut-50); outline: 1px dashed var(--glut); }
.b-posten { top: calc(var(--mm) * 116); left: calc(var(--mm) * 25); right: calc(var(--mm) * 20); width: auto; border-collapse: collapse; font-size: calc(var(--mm) * 2.9); }
.b-posten th { font: 400 calc(var(--mm) * 2.3) var(--schrift-mono); text-transform: uppercase; letter-spacing: 0.06em; color: var(--schiefer); text-align: left; border-bottom: calc(var(--mm) * 0.3) solid var(--nacht); padding: calc(var(--mm) * 1.2) calc(var(--mm) * 1); }
.b-posten td { padding: calc(var(--mm) * 1.6) calc(var(--mm) * 1); border-bottom: calc(var(--mm) * 0.2) solid var(--linie); vertical-align: top; }
.b-posten .r { text-align: right; font-family: var(--schrift-mono); }
.b-posten tfoot td { border: 0; padding-top: calc(var(--mm) * 1); }
.b-posten tfoot tr:last-child td { font-weight: 600; border-top: calc(var(--mm) * 0.3) solid var(--nacht); }
.b-posten small { display: block; color: var(--schiefer); font-size: 0.85em; }
.b-ral { font-family: var(--schrift-mono); font-size: 0.9em; }
.b-zahlung { top: calc(var(--mm) * 196); left: calc(var(--mm) * 25); right: calc(var(--mm) * 20); font-size: calc(var(--mm) * 2.9); }

.signatur-rahmen { background: var(--weiss); border: 1px solid var(--linie); padding: 1.5rem; }
.knopf {
  display: inline-flex; align-items: center; gap: 0.5rem; font: 600 0.95rem var(--schrift-text);
  background: var(--glut-tief); color: var(--weiss); border: 0; padding: 0.7rem 1.1rem; cursor: pointer; text-decoration: none;
}
.knopf[data-kopiert]::after { content: ", kopiert"; }
.knopf:hover { background: var(--nacht); color: var(--weiss); }
.knopf-zweit { background: transparent; color: var(--nacht); box-shadow: inset 0 0 0 1px var(--schiefer); }
.knopf-zweit:hover { background: var(--grund); color: var(--nacht); }
.knopfreihe { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-top: 1rem; }
pre.code { background: var(--nacht); color: var(--petrol-100); padding: 1rem 1.2rem; overflow-x: auto; font: 400 0.8rem/1.55 var(--schrift-mono); max-width: var(--spalte); }

/* ---------------------------------------------------------------- areaOS -- */
.os { display: grid; grid-template-columns: 12rem 1fr; min-height: 26rem; border: 1px solid var(--linie); background: var(--grund); overflow: hidden; font-size: 0.875rem; }
.os-leiste { background: var(--petrol); color: var(--weiss); padding: 1.1rem 0.8rem; }
.os-leiste img { width: 6.5rem; margin: 0 0.4rem 1.4rem; }
.os-leiste span { display: block; padding: 0.45rem 0.6rem; border-left: 3px solid transparent; color: var(--petrol-100); }
.os-leiste span.aktiv { border-left-color: var(--glut); background: var(--petrol-800); color: var(--weiss); font-weight: 500; }
.os-haupt { position: relative; overflow: hidden; }
.os-haupt::before { content: ""; position: absolute; inset: -2rem -2rem auto auto; width: 16rem; height: 9rem; background: radial-gradient(closest-side, var(--pulver), transparent); opacity: 0.55; }
.os-kopf {
  position: relative; display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: 0.9rem 1.2rem;
  background: rgb(255 255 255 / 0.68); -webkit-backdrop-filter: blur(14px) saturate(1.2); backdrop-filter: blur(14px) saturate(1.2);
  border-bottom: 1px solid var(--linie);
}
.os-kopf h4 { margin: 0; font-size: 1.1rem; }
.os-knopf { background: var(--glut-tief); color: var(--weiss); font-weight: 600; padding: 0.45rem 0.9rem; font-size: 0.85rem; }
.os-tabelle { width: calc(100% - 2.4rem); margin: 1rem 1.2rem; border-collapse: collapse; background: var(--weiss); border: 1px solid var(--linie); }
.os-tabelle th { font: 400 0.68rem var(--schrift-mono); letter-spacing: 0.08em; text-transform: uppercase; color: var(--schiefer); text-align: left; padding: 0.55rem 0.7rem; border-bottom: 1px solid var(--linie); background: var(--grund); }
.os-tabelle td { padding: 0.6rem 0.7rem; border-bottom: 1px solid var(--linie); }
.os-tabelle .r { text-align: right; }
.marke { display: inline-flex; align-items: center; gap: 0.35rem; padding: 0.12rem 0.5rem; font-size: 0.78rem; font-weight: 600; }
.marke::before { content: ""; width: 0.45rem; height: 0.45rem; border-radius: 50%; background: currentColor; }
.marke-offen { background: var(--glut-50); color: var(--glut-tief); }
.marke-arbeit { background: var(--petrol-100); color: var(--petrol); }
.marke-erledigt { background: var(--gruen-50); color: var(--gruen-tief); }

/* -------------------------------------------------------------- Downloads -- */
.downloads { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.75rem; grid-template-columns: repeat(auto-fill, minmax(min(19rem, 100%), 1fr)); }
.downloads a {
  display: flex; flex-direction: column; gap: 0.2rem; height: 100%; padding: 1rem 1.2rem 1rem 1.1rem;
  background: var(--weiss); border: 1px solid var(--linie); border-left: 4px solid var(--glut); color: var(--nacht); text-decoration: none;
}
.downloads a:hover { border-left-color: var(--petrol); background: var(--petrol-100); }
.downloads strong { font-family: var(--schrift-titel); font-size: 1.05rem; }
.downloads span { font-size: 0.875rem; color: var(--schiefer); }
.downloads .mono { font-size: 0.75rem; }

.fuss { margin-left: var(--leiste); background: var(--nacht); color: var(--petrol-100); padding: 2.5rem var(--rand); font-size: 0.875rem; display: flex; flex-wrap: wrap; gap: 1rem 3rem; justify-content: space-between; }
.fuss a { color: var(--weiss); }
.fuss img { width: 2.4rem; }

/* ------------------------------------------------------------- Schmal -- */
@media screen and (max-width: 60rem) {
  .leiste { display: none; }
  main, .fuss { margin-left: 0; }
  .kopf-schmal {
    display: block; position: sticky; top: 0; z-index: 10;
    background: rgb(0 48 63 / 0.82); -webkit-backdrop-filter: blur(14px) saturate(1.3); backdrop-filter: blur(14px) saturate(1.3);
    color: var(--weiss);
  }
  .kopf-schmal summary { list-style: none; display: flex; align-items: center; justify-content: space-between; padding: 0.75rem 1rem; cursor: pointer; }
  .kopf-schmal summary::-webkit-details-marker { display: none; }
  .kopf-schmal summary img { width: 6.5rem; }
  .kopf-schmal summary span { font: 400 0.75rem var(--schrift-mono); letter-spacing: 0.08em; text-transform: uppercase; border: 1px solid rgb(255 255 255 / 0.4); padding: 0.35rem 0.6rem; }
  .kopf-schmal ol { margin: 0; padding: 0 1rem 1rem 2.4rem; }
  .kopf-schmal a { color: var(--weiss); display: block; padding: 0.4rem 0; }
  .auftakt { min-height: auto; }
  .bilder { grid-template-columns: 1fr; grid-auto-rows: 14rem; }
  .bilder figure:first-child { grid-row: span 1; }
  .os { grid-template-columns: 1fr; }
  .os-leiste { display: flex; align-items: center; gap: 0.2rem; overflow-x: auto; padding: 0.6rem; }
  .os-leiste img { width: 4.5rem; margin: 0 0.6rem 0 0.2rem; }
  .os-leiste span { border-left: 0; border-bottom: 3px solid transparent; white-space: nowrap; }
  .os-leiste span.aktiv { border-bottom-color: var(--glut); }
  .os-tabelle .weg { display: none; }
}

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* ------------------------------------------------------------------ Druck -- */
@page { size: A4; margin: 15mm 14mm 16mm; }
@page :first { margin: 0; }
@media print {
  html { font-size: 9.5pt; }
  body { background: var(--weiss); -webkit-print-color-adjust: exact; print-color-adjust: exact; orphans: 3; widows: 3; }
  .leiste, .kopf-schmal, .knopfreihe, .nur-bildschirm { display: none !important; }
  main, .fuss { margin-left: 0; }
  .auftakt { min-height: 297mm; height: 297mm; padding: 28mm 22mm 0; break-after: page; }
  .auftakt h1 { font-size: 46pt; }
  .kapitel { padding: 0; border: 0; break-before: page; }
  .kapitel > * { max-width: none; }
  h2, h3, h4, .kapitel-marke { break-after: avoid; page-break-after: avoid; }
  h3 { margin-top: 1.6rem; }
  .zusammen, .karte, .blech, .buehne, figure, .mass, .muster, .typenschild, tr, .regeln li, .downloads li, .os, .signatur-rahmen, .mindest, .aufbau, .anteile { break-inside: avoid; page-break-inside: avoid; }
  thead { display: table-header-group; }
  .tabelle-rahmen { overflow: visible; }
  .kontrast { min-width: 0; font-size: 8pt; }
  .bleche { grid-template-columns: repeat(4, 1fr); }
  .raster, .falsch { grid-template-columns: repeat(3, 1fr); }
  .raster-2, .blaetter { grid-template-columns: 1fr 1fr; }
  .bilder { grid-auto-rows: 48mm; }
  .os { grid-template-columns: 34mm 1fr; min-height: 0; }
  .fuss { break-before: avoid; margin-top: 10mm; }
  a { color: inherit; text-decoration: none; }
  .wert { border: 0; }
  pre.code { white-space: pre-wrap; font-size: 7pt; }
}