:root{--ink:#10244b;--muted:#6e7c98;--blue:#1d68df;--bg:#f4f8fd;--line:#dfe8f3;--card:#fff;--shadow:0 14px 40px rgba(25,55,100,.08)}*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:linear-gradient(135deg,#f6f9fd,#edf5fb)}button,input,select{font:inherit}.app{min-height:100vh;display:grid;grid-template-columns:280px 1fr}.side{position:sticky;top:0;height:100vh;padding:24px 16px;background:rgba(255,255,255,.78);backdrop-filter:blur(16px);border-right:1px solid var(--line);overflow:auto}.brand{display:flex;gap:12px;align-items:center;padding:2px 10px 24px}.brandico{font-size:34px}.brand b{font-size:23px}.brand small,.nav small{display:block;color:var(--muted);font-size:11px;margin-top:3px}.nav{width:100%;border:0;background:transparent;color:var(--ink);display:flex;align-items:flex-start;gap:12px;text-align:left;padding:11px 12px;border-radius:12px;cursor:pointer;margin:2px 0}.nav:hover,.nav.active{background:#e7f1ff}.nav>span:first-child{font-size:19px}.sideTitle{font-size:11px;text-transform:uppercase;letter-spacing:.12em;color:#8491a8;padding:22px 12px 8px}.quote{margin-top:30px;border-radius:16px;padding:22px;background:linear-gradient(160deg,#dce9f9,#eff4fb);font-family:Georgia,serif;font-style:italic;font-size:20px;line-height:1.5;position:relative}.quote span{position:absolute;right:14px;bottom:10px}main{min-width:0}header{height:84px;padding:18px 32px;display:flex;align-items:center;gap:20px;position:sticky;top:0;background:rgba(244,248,253,.86);backdrop-filter:blur(16px);z-index:20}.burger{display:none}.search{max-width:650px;flex:1;background:white;border:1px solid #d8e2ee;border-radius:18px;box-shadow:0 6px 22px rgba(31,62,110,.06);display:flex;align-items:center;padding:0 14px}.search span{font-size:25px;color:#6f7f99}.search input{width:100%;border:0;outline:0;padding:14px;background:transparent;color:var(--ink)}kbd{border:1px solid var(--line);border-bottom-width:2px;border-radius:7px;padding:4px 7px;color:#8090aa;background:#fafcff}.toplinks{margin-left:auto;display:flex;gap:8px}.toplinks button,.fav{border:0;background:transparent;color:var(--ink);padding:10px 12px;cursor:pointer}.view{padding:24px 32px 60px;max-width:1500px;margin:auto}.hidden{display:none!important}.hero{min-height:330px;background:linear-gradient(135deg,#f7fbff 0%,#eaf3ff 58%,#f4edff 100%);border:1px solid #dce8f7;border-radius:28px;padding:44px;display:grid;grid-template-columns:1.45fr .55fr;gap:30px;box-shadow:var(--shadow);overflow:hidden;position:relative}.hero:after{content:"";position:absolute;width:390px;height:390px;border-radius:50%;background:rgba(119,159,235,.12);right:-120px;top:-120px}.eyebrow{font-size:11px;font-weight:800;letter-spacing:.13em;color:#5e78a5;text-transform:uppercase}.hero h1,.libraryTop h1,.lessonHead h1{font-size:44px;line-height:1.05;margin:12px 0 16px;letter-spacing:-.03em}.hero h1 em{font-style:normal;color:#366fca}.hero p,.libraryTop p,.lessonHead p{color:#61718e;line-height:1.65;max-width:780px}.primary{border:0;background:#174f9e;color:#fff;border-radius:13px;padding:13px 18px;font-weight:800;cursor:pointer;box-shadow:0 10px 24px rgba(23,79,158,.22)}.heroCard{align-self:center;justify-self:end;width:220px;height:220px;border-radius:26px;background:rgba(255,255,255,.74);border:1px solid rgba(255,255,255,.9);box-shadow:var(--shadow);padding:24px;display:flex;flex-direction:column;justify-content:center;position:relative;z-index:2}.heroCard b{font-size:48px}.heroCard small{color:var(--muted)}.ring{position:absolute;right:-16px;bottom:-18px;width:100px;height:100px;background:#fff;border:10px solid #dbe8fd;border-top-color:#7ea4ea;border-radius:50%;display:grid;place-items:center;box-shadow:0 8px 25px rgba(50,80,120,.12)}.ring span{font-size:22px;font-weight:800}.ring small{position:absolute;bottom:18px;font-size:9px}.sectionHead,.libraryTop,.lessonHead{display:flex;justify-content:space-between;align-items:flex-end;gap:18px;margin-top:38px}.sectionHead h2{margin:5px 0;font-size:28px}.sectionHead>div>span{font-size:11px;letter-spacing:.12em;color:#7b8ba6;font-weight:800}.yearfilters,.filters{display:flex;gap:8px;flex-wrap:wrap}.chip,select{border:1px solid var(--line);background:#fff;border-radius:12px;padding:9px 12px;color:var(--ink)}.chip.active{background:#163f79;color:#fff}.hkbgrid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-top:18px}.hcard{border:1px solid var(--line);border-radius:20px;background:#fff;padding:20px;text-align:left;min-height:190px;cursor:pointer;transition:.2s;box-shadow:0 8px 24px rgba(31,60,100,.04)}.hcard:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.bigico{font-size:31px;display:block;margin-bottom:18px}.hcode{display:block;font-size:11px;font-weight:900;letter-spacing:.1em;color:#6c7b96;margin-bottom:6px}.hcard b{display:block;font-size:16px;line-height:1.35}.hcard .hc{display:block;margin-top:17px;color:#5572a1}.tone-a{background:linear-gradient(145deg,#fff,#eef5ff)}.tone-b{background:linear-gradient(145deg,#fff,#f0f8f5)}.tone-c{background:linear-gradient(145deg,#fff,#fff7eb)}.tone-d{background:linear-gradient(145deg,#fff,#fff0f4)}.tone-e{background:linear-gradient(145deg,#fff,#f1efff)}.tone-wpb,.tone-opt{background:linear-gradient(145deg,#fff,#eef9f7)}.topicgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:24px}.topic{background:#fff;border:1px solid var(--line);border-radius:18px;padding:20px;cursor:pointer;text-align:left;box-shadow:0 5px 18px rgba(30,60,100,.04);transition:.18s}.topic:hover{transform:translateY(-2px);border-color:#b8cae1}.topic .meta{font-size:11px;color:#7183a0;font-weight:800}.topic h3{margin:9px 0 7px;font-size:18px}.topic p{margin:0;color:#71809a;line-height:1.5;font-size:13px}.lessonHead{align-items:flex-start}.fav{border:1px solid var(--line);background:#fff;border-radius:12px}.crumb{color:#7a8ba5;font-size:12px;margin:6px 0 18px}.tabs{display:flex;gap:6px;border-bottom:1px solid var(--line);margin-top:28px;overflow:auto}.tabs button{white-space:nowrap;border:0;background:transparent;padding:14px 16px;color:#526685;cursor:pointer;border-bottom:3px solid transparent}.tabs button.active{color:#145dcb;border-bottom-color:#145dcb;font-weight:800}.tabbody{padding-top:22px}.panelgrid{display:grid;grid-template-columns:1.25fr .75fr;gap:16px}.box{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:0 8px 24px rgba(31,60,100,.04)}.box h3{margin-top:0}.box p,.box li{line-height:1.65;color:#4f607d}.callout{background:linear-gradient(135deg,#fff8e8,#fff0df);border:1px solid #f3dfc4;border-radius:16px;padding:18px;margin-top:16px}.cards3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:14px}.mini{border-radius:16px;padding:18px;min-height:160px}.green{background:#ebfaf1}.amber{background:#fff5dc}.pink{background:#ffedf2}.purple{background:#f1ecff}.quizAnswer{display:none;margin-top:14px;padding:15px;border-radius:12px;background:#eff8f2}.showanswer{border:0;background:#6c52cc;color:white;border-radius:10px;padding:10px 14px;cursor:pointer}footer{padding:24px 32px;color:#7d8ca3;font-size:11px;border-top:1px solid var(--line)}footer span{opacity:.85}@media(max-width:1050px){.app{grid-template-columns:1fr}.side{position:fixed;z-index:50;left:-300px;width:280px;transition:.2s;box-shadow:20px 0 50px rgba(0,0,0,.12)}.side.open{left:0}.burger{display:block;border:0;background:#fff;border-radius:10px;padding:9px 11px}.hkbgrid{grid-template-columns:repeat(2,1fr)}.topicgrid{grid-template-columns:repeat(2,1fr)}}@media(max-width:720px){header{padding:12px 14px;height:72px}.toplinks,kbd{display:none}.view{padding:18px 14px 48px}.hero{grid-template-columns:1fr;padding:26px;min-height:auto}.hero h1,.libraryTop h1,.lessonHead h1{font-size:34px}.heroCard{display:none}.sectionHead,.libraryTop,.lessonHead{align-items:flex-start;flex-direction:column}.hkbgrid,.topicgrid,.panelgrid,.cards3{grid-template-columns:1fr}.tabs button{padding:12px 11px}.fav{align-self:flex-start}}

.keywrap{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 24px}.keypill{padding:7px 11px;border-radius:999px;background:#eef5ff;color:#204b7d;font-size:13px;font-weight:700}.learnsteps,.examlist{padding-left:22px;line-height:1.7}.learnsteps li,.examlist li{margin:8px 0}.checklist{list-style:none;padding:0}.checklist li{padding:10px 12px;margin:7px 0;background:#f7f9fc;border-radius:10px;line-height:1.5}.tabbody p{line-height:1.72}.box h3{margin-top:18px}.box h3:first-child{margin-top:0}

/* Klickbarkeit der Lern- und HKB-Kacheln klar sichtbar */
.hcard, .topic, .nav[data-hkb] { cursor: pointer; }
.hcard, .topic { position: relative; }
.hcard:focus-visible, .topic:focus-visible, .nav:focus-visible {
  outline: 3px solid rgba(39, 73, 125, .35);
  outline-offset: 3px;
}
.topicOpen {
  display: inline-block;
  margin-top: 12px;
  font-weight: 700;
  font-size: .9rem;
  opacity: .78;
}
.topic:hover .topicOpen, .topic:focus-visible .topicOpen { opacity: 1; }
.startbox{margin-top:24px;background:linear-gradient(135deg,#eaf4ff,#f6f1ff);border:1px solid #d9e5f4;border-radius:24px;padding:28px;display:flex;gap:24px;align-items:center;box-shadow:var(--shadow)}.startnum{width:76px;height:76px;border-radius:22px;background:#fff;display:grid;place-items:center;font-size:26px;font-weight:900;color:#3569ad}.startbox h2{margin:6px 0}.journeygrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.journey{background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px}.journey h3{margin:7px 0}.journey ol{padding-left:22px}.journey li{margin:9px 0;color:#52627d}.resource{display:block;text-decoration:none;color:inherit;border:1px solid var(--line);background:#fff;border-radius:14px;padding:16px;margin:10px 0}.resource:hover{border-color:#9db7da;transform:translateY(-1px)}.resource b{display:block;margin-bottom:5px}.resource small{color:#657791}.deepq{border-left:4px solid #7c62d3;padding:12px 16px;background:#f6f2ff;border-radius:0 12px 12px 0;margin:12px 0}@media(max-width:720px){.journeygrid{grid-template-columns:1fr}.startbox{align-items:flex-start}.startnum{flex:0 0 60px;width:60px;height:60px}}
.linkbtn{border:0;background:transparent;color:#245c9f;text-align:left;padding:2px 0;cursor:pointer;font-weight:700}.linkbtn:hover{text-decoration:underline}