.header[data-v-1853c11b]{background:#2c3e50;color:#fff;padding:1rem 2rem;display:flex;align-items:center;gap:2rem}.title[data-v-1853c11b]{font-size:1.5rem;font-weight:700}.nav[data-v-1853c11b]{display:flex;gap:1.5rem}.nav a[data-v-1853c11b]{color:#fff;text-decoration:none;font-size:1rem}.nav a[data-v-1853c11b]:hover{text-decoration:underline}body{font-family:sans-serif;background:#f5f5f5;margin:0}.container{max-width:700px;margin:2rem auto;padding:1rem}h1{margin-bottom:1rem}button{padding:.5rem 1.2rem;font-size:1rem;cursor:pointer}ul{list-style:none;padding:0;margin-top:1.5rem}li{background:#fff;border:1px solid #ddd;border-radius:6px;margin-bottom:.5rem;overflow:hidden}.aufgabe-titel{width:100%;text-align:left;background:none;border:none;padding:.8rem 1rem;font-size:1rem;font-weight:700;cursor:pointer}.aufgabe-titel:hover{background:#f0f0f0}.aufgabe-detail{padding:.5rem 1rem 1rem;border-top:1px solid #eee}.antworten{margin:.5rem 0}.antwort-option{display:block;margin:.3rem 0;cursor:pointer}.abgabe-btn{margin-top:1rem;background:#4a90e2;color:#fff;border:none;border-radius:4px}.abgabe-btn:hover{background:#357abd}.fehler{color:red}