:root{--blau:#0b2147;--akzent:#2563eb;--grau:#f3f5f9;--rand:#dde2ec;--text:#1c2433}
*{box-sizing:border-box}
body{margin:0;font:16px/1.6 system-ui,Segoe UI,Roboto,sans-serif;color:var(--text);background:var(--grau)}
a{color:var(--akzent)}
.kopf{background:var(--blau);color:#fff;display:flex;justify-content:space-between;align-items:center;padding:.8rem 1.2rem}
.kopf a{color:#fff;text-decoration:none}.kopf nav a{margin-left:1.2rem;font-size:.9rem;opacity:.85}
.logo{font-weight:700}
main{max-width:1200px;margin:0 auto;padding:1.2rem}
h1{margin:.3rem 0 1rem}
.karte{background:#fff;border:1px solid var(--rand);border-radius:12px;padding:1.2rem 1.4rem;margin-bottom:1.2rem}
.schmal{max-width:460px;margin:3rem auto}
.hinweis{background:#fff8d6;border:1px solid #ecd97a;padding:.7rem 1rem;border-radius:8px;margin-bottom:1rem}
.fehler{color:#b00020}
label{display:block;margin:.8rem 0 .2rem;font-weight:600}
label.inline{display:inline-block;margin:.3rem 1rem .3rem 0;font-weight:400}
input:not([type=checkbox]):not([type=radio]),textarea,select{width:100%;padding:.55rem .7rem;border:1px solid var(--rand);border-radius:8px;font:inherit;background:#fff}
.knopf,button.klein{display:inline-block;background:var(--akzent);color:#fff;border:0;border-radius:8px;padding:.6rem 1.1rem;font:inherit;font-weight:600;cursor:pointer;text-decoration:none;margin-top:.8rem}
.knopf.hell,button.klein{background:#e8edf8;color:var(--blau)}
.knopf.gefahr,button.klein.gefahr{background:#fde8e8;color:#9b1c1c}
button.klein{padding:.25rem .6rem;margin:0;font-size:.85rem}
.raster{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1.2rem}
.kurskarte{background:#fff;border:1px solid var(--rand);border-radius:12px;overflow:hidden;text-decoration:none;color:inherit;display:block}
.kurskarte:hover{box-shadow:0 4px 14px rgba(11,33,71,.15)}
.kurskarte img,.platzhalter{width:100%;aspect-ratio:16/9;object-fit:cover;display:block}
.platzhalter{background:var(--blau);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;padding:1rem;text-align:center}
.kurskarte .text{padding:.9rem 1rem}.kurskarte h2{margin:0 0 .3rem;font-size:1.1rem}.kurskarte p{margin:0 0 .6rem;color:#55607a;font-size:.9rem}
.balken{height:8px;background:var(--grau);border-radius:6px;overflow:hidden;margin:.4rem 0 .2rem}.balken span{display:block;height:100%;background:var(--akzent)}
.lektion-layout{display:grid;grid-template-columns:1fr 330px;gap:1.2rem;align-items:start}
@media(max-width:860px){.lektion-layout{grid-template-columns:1fr}.liste{order:-1}}
.video{position:relative;aspect-ratio:16/9;background:#000;border-radius:10px;overflow:hidden;margin-bottom:1rem}
.video iframe,.video video{position:absolute;inset:0;width:100%;height:100%;border:0}
.inhalt{overflow-wrap:anywhere}.inhalt img{max-width:100%;height:auto}
.leiste{display:flex;justify-content:space-between;align-items:center;gap:.6rem;flex-wrap:wrap;margin-top:1.2rem}
.liste ol{list-style:none;margin:0;padding:0}.liste h2{font-size:1rem;margin-top:0}
.liste li a{display:flex;gap:.5rem;padding:.5rem .6rem;text-decoration:none;color:inherit;border-radius:8px;font-size:.95rem}
.liste li.aktiv a{background:#e8edf8;font-weight:600}.liste li a:hover{background:var(--grau)}
.liste li.gruppe{font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:#6b7690;margin:.8rem 0 .2rem;padding-left:.6rem}
.haken{display:inline-block;width:1.2rem;color:#16a34a;font-weight:700}
.krümel{color:#6b7690;font-size:.9rem}
.tabelle{width:100%;border-collapse:collapse}.tabelle td{padding:.5rem .4rem;border-bottom:1px solid var(--rand);vertical-align:middle}
.aktionen{display:flex;gap:.3rem}.aktionen form{margin:0}
.zeile{display:flex;gap:.6rem;align-items:flex-start;margin-top:.6rem}.zeile .knopf{margin-top:0;white-space:nowrap}
fieldset{border:1px solid var(--rand);border-radius:10px;margin:1rem 0;padding:.6rem 1rem}
.werkzeug{display:flex;gap:.3rem;flex-wrap:wrap;margin:.3rem 0}
.editor{min-height:220px;border:1px solid var(--rand);border-radius:8px;padding:.8rem;background:#fff;overflow-wrap:anywhere}
.kaeufer{border-bottom:1px solid var(--rand);padding:.8rem 0}.kaeufer small{color:#6b7690;margin-left:.6rem}
.linkzeile{display:flex;gap:.6rem;align-items:center;margin-top:.4rem}.linkzeile form{display:flex;gap:.3rem;margin:0}.linkzeile input{font-size:.8rem}
code{background:var(--grau);padding:.1rem .3rem;border-radius:4px}
.codefeld{font-size:1.6rem;letter-spacing:.4em;text-align:center}
.fuss{text-align:center;color:#6b7690;font-size:.85rem;padding:1.5rem 1rem}.fuss a{color:#6b7690}
.loomknopf{position:absolute;inset:0;width:100%;background:#0b2147;color:#fff;border:0;font:inherit;font-size:1.3rem;font-weight:600;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.6rem;padding:1rem}
.loomknopf small{font-size:.8rem;font-weight:400;opacity:.85}.loomknopf small a{color:#cfe0ff}