:root{
  --bg:#f5f6f8;--card:#fff;--tx:#18202b;--mut:#5a6572;--rand:#d8dde4;--rand2:#e8ebef;
  --pri:#1f4e8c;--pri-h:#173c6c;--pri-bg:#e9eff7;
  --ok:#1d6a3a;--okbg:#e7f2ea;--bad:#9a1b1b;--badbg:#faeaea;--warn:#6d5200;--warnbg:#f8f1dc;--info:#34495e;--infobg:#eceff3;
  --schatten:none
}
@media (prefers-color-scheme:dark){:root{
  --bg:#12171d;--card:#1b222b;--tx:#e8ecf1;--mut:#9aa6b4;--rand:#313b47;--rand2:#27303a;
  --pri:#7aa7e0;--pri-h:#9bbdea;--pri-bg:#1f2b3a;
  --ok:#7fcf9a;--okbg:#17301f;--bad:#f0a0a0;--badbg:#3a1c1c;--warn:#e6c76a;--warnbg:#332b12;--info:#b6c2d0;--infobg:#222b35}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--tx);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--pri);text-underline-offset:2px}
a:hover{color:var(--pri-h)}
.bunt{height:3px;background:var(--pri)}
header.kopf{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem 1.5rem;padding:.75rem 1.25rem;max-width:64rem;margin:0 auto;border-bottom:1px solid var(--rand)}
header.kopf .logo{font-weight:650;font-size:1.05rem;letter-spacing:.01em;text-decoration:none;color:var(--tx);display:inline-flex;align-items:center;gap:.55rem}
header.kopf .logo::before{content:"";width:.8rem;height:.8rem;background:var(--pri);border-radius:2px;display:inline-block}
nav.menue{display:flex;flex-wrap:wrap;gap:.1rem .25rem;margin-left:auto;align-items:center}
nav.menue a,nav.menue button{padding:.4rem .7rem;border-radius:4px;text-decoration:none;color:var(--mut);background:transparent;border:0;font:inherit;font-size:.95rem;font-weight:500;cursor:pointer;margin:0}
nav.menue a:hover,nav.menue button:hover{color:var(--tx);background:var(--rand2)}
nav.menue a.hier{color:var(--tx);box-shadow:inset 0 -2px 0 var(--pri);border-radius:0}
nav.menue form{margin:0;display:inline}
main{max-width:64rem;margin:0 auto;padding:0 1.25rem 3rem}
h1{font-size:1.6rem;line-height:1.25;margin:1.4rem 0 .6rem;font-weight:650;letter-spacing:-.005em}
h2{font-size:1.1rem;margin:1.6rem 0 .6rem;font-weight:650}
h3{font-size:1rem;margin:1.1rem 0 .3rem;font-weight:650}
p{margin:.6rem 0}
.info{background:var(--infobg);color:var(--info);border-left:3px solid var(--pri);border-radius:0 4px 4px 0;padding:.55rem .9rem;margin:1rem 0;font-size:.92rem}
.hinweis{background:var(--card);border:1px solid var(--rand);border-radius:6px;padding:.65rem .9rem;color:var(--mut);margin:1rem 0;font-size:.93rem}
.ok{background:var(--okbg);color:var(--ok);border-left:3px solid var(--ok);border-radius:0 4px 4px 0;padding:.6rem .9rem;margin:1rem 0}
.fehler{background:var(--badbg);color:var(--bad);border-left:3px solid var(--bad);border-radius:0 4px 4px 0;padding:.6rem .9rem;margin:1rem 0}
.karte{background:var(--card);border:1px solid var(--rand);border-radius:6px;padding:1.1rem 1.25rem;margin:1rem 0}
.karte>h2:first-child,.karte>h3:first-child{margin-top:0}
.raster{display:grid;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr));gap:.9rem}
.raster .karte{margin:0}
.kachel{display:block;text-decoration:none;color:var(--tx);transition:border-color .12s}
.kachel:hover{border-color:var(--pri)}
.kachel strong{display:block;font-size:1rem;font-weight:650;margin-bottom:.15rem;color:var(--pri)}
.kachel span{color:var(--mut);font-size:.92rem}
label{display:block;font-weight:600;font-size:.93rem;margin:.9rem 0 .25rem}
label.inline{display:inline-flex;align-items:center;gap:.45rem;font-weight:400;font-size:1rem;margin:.25rem 1rem .25rem 0}
input[type=text],input[type=password],input[type=number],select,textarea{width:100%;max-width:26rem;padding:.5rem .65rem;border:1px solid var(--rand);border-radius:4px;background:var(--card);color:var(--tx);font:inherit}
input:focus,select:focus,textarea:focus,button:focus-visible,a:focus-visible{outline:2px solid var(--pri);outline-offset:1px}
input[type=checkbox],input[type=radio]{width:1.05rem;height:1.05rem;accent-color:var(--pri)}
.klein{font-size:.88rem;color:var(--mut);font-weight:400}
button,.knopf{display:inline-block;padding:.5rem 1.05rem;border:1px solid var(--pri);border-radius:4px;background:var(--pri);color:#fff;font:inherit;font-size:.95rem;font-weight:600;cursor:pointer;text-decoration:none;margin:.3rem .35rem .3rem 0}
@media (prefers-color-scheme:dark){button,.knopf{color:#0b1420}}
button:hover,.knopf:hover{background:var(--pri-h);border-color:var(--pri-h);color:#fff}
@media (prefers-color-scheme:dark){button:hover,.knopf:hover{color:#0b1420}}
button.leise,.knopf.leise{background:transparent;color:var(--pri);border-color:var(--rand)}
button.leise:hover,.knopf.leise:hover{background:var(--pri-bg);color:var(--pri-h);border-color:var(--pri)}
button.gefahr{background:var(--bad);border-color:var(--bad);color:#fff}
fieldset{border:1px solid var(--rand);border-radius:6px;margin:.9rem 0;padding:.5rem 1rem .7rem}
legend{font-weight:600;font-size:.93rem;padding:0 .4rem}
table{border-collapse:collapse;width:100%;font-size:.93rem}
th{text-align:left;padding:.5rem .6rem;border-bottom:2px solid var(--rand);color:var(--mut);font-size:.8rem;font-weight:650;text-transform:uppercase;letter-spacing:.04em;white-space:nowrap}
td{text-align:left;padding:.55rem .6rem;border-bottom:1px solid var(--rand2);vertical-align:top}
tr:last-child td{border-bottom:0}
.tabwrap{overflow-x:auto}
.balken{display:inline-block;width:6.5rem;height:.5rem;background:var(--rand2);border-radius:2px;vertical-align:middle;overflow:hidden}
.balken i{display:block;height:100%;background:var(--ok)}
.balken.mid i{background:#b58900}.balken.low i{background:var(--bad)}
.chip{display:inline-block;padding:.05rem .5rem;border-radius:3px;font-size:.8rem;font-weight:600;background:var(--rand2);color:var(--mut);margin:.1rem}
.chip.sicher{background:var(--okbg);color:var(--ok)}.chip.aufbau{background:var(--warnbg);color:var(--warn)}.chip.foerder{background:var(--badbg);color:var(--bad)}
.aufgabe{font-size:1.35rem;font-weight:600;line-height:1.4;margin:1.1rem 0}
.fortschritt{height:4px;background:var(--rand2);border-radius:2px;overflow:hidden}.fortschritt i{display:block;height:100%;background:var(--pri)}
.antwort{font-size:1.25rem;max-width:14rem}
.schritte{background:var(--infobg);color:var(--info);border-left:3px solid var(--rand);border-radius:0 4px 4px 0;padding:.45rem .9rem;margin:.8rem 0;font-size:.95rem}
.schritte ol{margin:.3rem 0 .3rem 1.2rem;padding:0}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.92em;background:var(--rand2);padding:.05rem .35rem;border-radius:3px}
[hidden]{display:none!important}
footer{max-width:64rem;margin:0 auto;padding:1.2rem 1.25rem 2rem;color:var(--mut);font-size:.85rem;border-top:1px solid var(--rand)}
/* Startseite */
.start{display:grid;grid-template-columns:1.15fr 1fr;gap:2.5rem;align-items:start;margin-top:1.5rem}
.start h1{font-size:2rem;margin-top:0}
.start .lead{font-size:1.08rem;color:var(--mut);max-width:34rem}
.start ul.punkte{list-style:none;padding:0;margin:1.2rem 0 0}
.start ul.punkte li{padding:.5rem 0 .5rem 1.1rem;border-top:1px solid var(--rand2);position:relative;color:var(--tx)}
.start ul.punkte li::before{content:"";position:absolute;left:0;top:1.05rem;width:.45rem;height:.45rem;background:var(--pri);border-radius:1px}
@media (max-width:760px){.start{grid-template-columns:1fr;gap:1rem}.start h1{font-size:1.6rem}header.kopf{padding:.6rem 1rem}main{padding:0 1rem 2.5rem}}
/* Arbeitsblatt */
.blatt{background:#fff;color:#000;padding:1.5rem;border:1px solid var(--rand);border-radius:4px}
.blatt h1{font-size:1.3rem}.blatt .kopfzeile{display:flex;justify-content:space-between;border-bottom:2px solid #000;padding-bottom:.3rem;margin-bottom:1rem}
.blatt ol{padding-left:1.6rem}.blatt li{margin:0 0 1.2rem;break-inside:avoid}
.blatt .quelle{font-size:.8rem;color:#444;border-top:1px solid #999;margin-top:1rem;padding-top:.4rem}
.blatt .loesung{color:#14532d;font-size:.9rem}
@media print{body{background:#fff}.bunt,header.kopf,footer,.nicht-drucken,.info{display:none!important}main{max-width:none;padding:0}.blatt{border:0;padding:0}.seitenwechsel{break-before:page}}
[data-rolle] label.inline{display:flex;margin:.55rem 0}
.aufgabe,.blatt li{white-space:pre-line}
.lesetext{background:var(--card);border:1px solid var(--rand);border-left:3px solid var(--pri);border-radius:4px;padding:.8rem 1rem;margin:.6rem 0;font-size:1.05rem;line-height:1.65;white-space:pre-line;max-width:46rem}
.aufgabe+.lesetext+.aufgabe{margin-top:1rem}

details.wiederholung{margin-top:.75rem}
details.wiederholung>summary{cursor:pointer;font-weight:600}
details.wiederholung[open]>summary{margin-bottom:.75rem}