:root{--orange:#f5a12a;--orange-dark:#c96f00;--teal:#318694;--teal-dark:#176573;--ink:#1d2b31;--muted:#607078;--line:#d9e1e4;--bg:#f2f6f7;--soft:#e7f2f4;--warm:#fff2dc;--success:#2a7d52;--shadow:0 18px 50px rgba(29,43,49,.1)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:95px}body{margin:0;background:var(--bg);color:var(--ink);font-family:Arial,Helvetica,sans-serif;font-size:17px;line-height:1.55}button,a{font:inherit}.skip{position:fixed;z-index:100;top:-60px;left:20px;background:#fff;color:#000;padding:10px 16px}.skip:focus{top:10px}.topbar{height:84px;background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20;display:flex;align-items:center;padding:0 32px;gap:24px}.brand img{display:block;width:300px;max-height:49px;object-fit:contain}.top-title{margin-left:auto;text-align:right;line-height:1.2}.top-title span{display:block;color:var(--teal-dark);font-size:.78rem;text-transform:uppercase;letter-spacing:.08em}.top-title strong{font-size:1.1rem}.nav-toggle{display:none;background:var(--teal);color:#fff;border:0;border-radius:8px;padding:8px 12px}.layout{display:grid;grid-template-columns:270px minmax(0,1fr);max-width:1500px;margin:auto}.sidebar{position:sticky;top:84px;height:calc(100vh - 84px);padding:28px 20px;background:#fff;border-right:1px solid var(--line);overflow:auto}.progress-head{display:flex;justify-content:space-between;gap:8px;font-size:.86rem}.progress-track{height:8px;background:#e7edef;border-radius:99px;margin:10px 0 24px;overflow:hidden}.progress-track span{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--teal),var(--orange));transition:width .3s}.sidebar nav{display:grid;gap:5px}.nav-item{display:grid;grid-template-columns:29px 1fr 20px;align-items:center;gap:8px;color:#48585f;text-decoration:none;padding:8px 9px;border-radius:8px;font-size:.88rem}.nav-item:first-child{grid-template-columns:1fr}.nav-item b{width:25px;height:25px;display:grid;place-items:center;background:#eef3f4;border-radius:50%;font-size:.76rem}.nav-item i{font-style:normal;text-align:center}.nav-item:hover,.nav-item.active{background:var(--soft);color:var(--teal-dark)}.nav-item.done i{color:var(--success);font-weight:700}.nav-item.done b{background:#def0e5;color:var(--success)}.reset{margin-top:25px;border:0;background:none;color:#74838a;font-size:.76rem;text-decoration:underline;cursor:pointer}main{min-width:0;padding:38px clamp(24px,5vw,78px) 80px}.lesson{max-width:1050px;margin:0 auto 42px;background:#fff;border:1px solid var(--line);border-radius:16px;padding:clamp(25px,4vw,54px);box-shadow:var(--shadow);scroll-margin-top:106px}.hero{overflow:hidden;position:relative}.hero-copy{max-width:690px;position:relative;z-index:2}.eyebrow{margin:0 0 7px;color:var(--teal-dark);text-transform:uppercase;letter-spacing:.11em;font-weight:700;font-size:.76rem}.hero h1{font-size:clamp(2.25rem,5vw,4.4rem);line-height:1.02;letter-spacing:-.045em;margin:0 0 23px;max-width:800px}.lead{font-size:1.15rem;color:#4e6068;max-width:750px}.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:28px 0 42px}.button{display:inline-flex;align-items:center;justify-content:center;text-decoration:none;border-radius:9px;padding:11px 18px;font-weight:700;border:2px solid transparent}.primary{background:var(--orange);color:#2b210f}.primary:hover{background:#ffb23e}.secondary{border-color:var(--teal);color:var(--teal-dark);background:#fff}.secondary:hover{background:var(--soft)}.paper-stack{position:absolute;right:-70px;top:42px;width:310px;height:390px;transform:rotate(4deg);opacity:.97}.paper{position:absolute;inset:0;background:#fff;border:1px solid #cbd3d6;box-shadow:0 20px 50px rgba(22,46,55,.18);padding:62px 32px}.paper.back{transform:translate(-22px,14px) rotate(-7deg);background:#e8f1f2}.paper span{font-size:.68rem;letter-spacing:.17em;color:#718087}.paper strong{display:block;font-size:2rem;margin-top:18px}.paper small{display:block;border-top:1px solid #adb9bd;padding-top:10px}.stripe{position:absolute;left:0;right:0;height:18px}.stripe.teal{bottom:75px;background:var(--teal)}.stripe.orange{bottom:0;height:75px;background:var(--orange)}.start-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line);margin:20px 0 28px}.start-grid>div{background:#fff;padding:22px}.start-grid strong{display:block;margin:7px 0}.start-grid p{margin:0;color:var(--muted);font-size:.9rem}.number{font-family:Georgia,serif;color:var(--orange-dark);font-size:1.55rem}.notice,.warning{border-left:5px solid var(--orange);background:var(--warm);padding:15px 18px;margin:24px 0}.next-link{margin-top:4px}.lesson-head{display:grid;grid-template-columns:auto 1fr auto;align-items:start;gap:17px;border-bottom:1px solid var(--line);padding-bottom:23px;margin-bottom:28px}.step-no{font-family:Georgia,serif;font-size:2.5rem;line-height:1;color:var(--orange-dark)}h2{font-size:clamp(1.65rem,3vw,2.55rem);line-height:1.08;letter-spacing:-.025em;margin:0}h3{font-size:1.2rem;margin:0 0 12px}.time{background:#eff4f5;color:#526269;border-radius:99px;padding:6px 12px;font-size:.8rem;white-space:nowrap}.intro{font-size:1.1rem;max-width:800px}.rule-panel{background:var(--warm);border-top:4px solid var(--orange);padding:20px 22px;margin:0 0 28px}.rule-panel ul{margin:11px 0 0;padding-left:22px}.badge{display:inline-block;text-transform:uppercase;letter-spacing:.08em;font-size:.7rem;font-weight:800;border-radius:4px;padding:4px 7px}.mandatory{background:var(--orange);color:#2b210f}.recommended{background:var(--teal);color:#fff}.work-grid,.split{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(260px,.8fr);gap:28px;align-items:start;margin:25px 0}.click-steps{padding:0;margin:0;list-style:none;counter-reset:step}.click-steps li{counter-increment:step;position:relative;padding:10px 0 10px 42px;border-bottom:1px solid #e8edef}.click-steps li:before{content:counter(step);position:absolute;left:0;top:9px;width:27px;height:27px;display:grid;place-items:center;border:1px solid var(--teal);border-radius:50%;color:var(--teal-dark);font-size:.8rem;font-weight:700}.click-steps span,.path,.path-inline{background:var(--soft);color:var(--teal-dark);border-radius:4px;padding:2px 6px;font-weight:700}.task{border-left:5px solid var(--teal);background:var(--soft);padding:17px 19px;margin:23px 0}.task strong{color:var(--teal-dark);text-transform:uppercase;letter-spacing:.08em;font-size:.75rem}.task p{margin:5px 0 0}.shot{width:100%;border:1px solid var(--line);background:#fff;padding:8px;cursor:zoom-in;box-shadow:0 8px 24px rgba(29,43,49,.08)}.shot img{display:block;width:100%;aspect-ratio:16/9;object-fit:cover}.shot span{display:block;text-align:right;color:var(--teal-dark);font-size:.77rem;margin:7px 4px 1px}.tip-card{background:#eff6f7;padding:23px}.tip-card .badge{margin-bottom:12px}.quiz{background:#f7f9fa;border:1px solid var(--line);padding:20px;margin:28px 0}.quiz p{margin:5px 0 12px}.quiz>div{display:flex;flex-wrap:wrap;gap:8px}.quiz button{border:1px solid #aebbc0;background:#fff;padding:8px 12px;border-radius:7px;cursor:pointer}.quiz button:hover{border-color:var(--teal)}.quiz button.correct{background:#dff3e7;border-color:var(--success);color:#145634}.quiz button.wrong{background:#fbe3df;border-color:#b84e3d}.feedback{min-height:1.4em;color:var(--muted);font-weight:700;font-size:.88rem}.lesson-foot{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:12px;border-top:1px solid var(--line);padding-top:22px;margin-top:29px}.lesson-foot a{color:var(--teal-dark);text-decoration:none}.lesson-foot a:last-child{text-align:right}.complete{background:var(--teal);color:#fff;border:0;border-radius:8px;padding:9px 14px;font-weight:700;cursor:pointer}.complete.done{background:var(--success)}.levels{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:27px 0}.levels>div{border-top:4px solid var(--teal);background:#f4f7f8;padding:19px}.levels b{font-family:Georgia,serif;font-size:1.6rem;color:var(--orange-dark);display:block}.levels strong,.levels span{display:block}.levels span{font-size:.88rem;color:var(--muted);margin-top:8px}.recommend-line{font-size:.9rem}.recommend-line .badge{margin-right:8px}.big-steps{list-style:none;padding:0;counter-reset:big}.big-steps li{counter-increment:big;display:grid;grid-template-columns:minmax(180px,.35fr) 1fr;gap:18px;padding:16px 0;border-bottom:1px solid var(--line)}.big-steps li b:before{content:counter(big) ". ";color:var(--orange-dark)}.two-shot{display:grid;grid-template-columns:1fr 1fr;gap:18px}.tabs{display:flex;border-bottom:1px solid var(--line);margin-top:26px;gap:5px}.tabs button{border:0;background:none;padding:12px 17px;color:#56666d;cursor:pointer}.tabs button[aria-selected=true]{color:var(--teal-dark);border-bottom:4px solid var(--teal);font-weight:700}.tab-panel{display:none;padding:24px 0 5px}.tab-panel.active{display:block}.example,.examples{font-family:Georgia,serif;background:#f5f7f7;border-left:4px solid var(--teal);padding:15px 18px}.final-flow{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;gap:15px;align-items:center;text-align:center;margin:30px 0 38px}.final-flow>div{background:var(--soft);padding:20px 10px}.final-flow span{display:block;color:var(--muted);font-size:.82rem;margin-top:7px}kbd{background:#fff;border:1px solid #aeb8bc;border-bottom-width:3px;border-radius:5px;padding:2px 7px;font-family:inherit}.checklist{display:grid;grid-template-columns:1fr 1fr;gap:9px 18px;margin:16px 0 30px}.checklist label{display:flex;gap:10px;align-items:flex-start;background:#f7f9fa;padding:12px}.checklist input{width:19px;height:19px;accent-color:var(--teal);flex:none}.completion-card{display:flex;align-items:center;justify-content:space-between;gap:22px;background:var(--warm);border-top:4px solid var(--orange);padding:23px}.completion-card p{margin:4px 0}.source-note{max-width:1050px;margin:0 auto;background:#263a42;color:#fff;padding:34px;border-radius:12px}.source-note h2{font-size:1.5rem}.source-note p{color:#d6e0e3}.source-note a{color:#ffd494}dialog{width:min(1100px,94vw);border:0;padding:42px 14px 14px;background:#fff;box-shadow:0 30px 90px #0008}dialog::backdrop{background:#102027cc}.close-dialog{position:absolute;right:10px;top:4px;border:0;background:none;font-size:2rem;cursor:pointer}.close-dialog+img{display:block;max-width:100%;max-height:78vh;margin:auto}.close-dialog~p{text-align:center;color:var(--muted)}.toast{position:fixed;right:25px;bottom:25px;background:#17343d;color:#fff;padding:12px 18px;border-radius:8px;box-shadow:var(--shadow);transform:translateY(120px);transition:.25s;z-index:50}.toast.show{transform:translateY(0)}
@media(max-width:900px){.topbar{height:72px;padding:0 16px}.brand img{width:220px}.top-title{display:none}.nav-toggle{display:block;margin-left:auto}.layout{display:block}.sidebar{position:fixed;z-index:19;top:72px;left:0;width:min(330px,90vw);height:calc(100vh - 72px);transform:translateX(-105%);transition:.25s;box-shadow:var(--shadow)}.sidebar.open{transform:none}main{padding:22px 14px 60px}.lesson{padding:28px 21px}.paper-stack{display:none}.work-grid,.split{grid-template-columns:1fr}.start-grid,.levels{grid-template-columns:1fr}.lesson-head{grid-template-columns:auto 1fr}.time{grid-column:2}.checklist{grid-template-columns:1fr}.big-steps li{grid-template-columns:1fr}.final-flow{grid-template-columns:1fr}.final-flow>b{transform:rotate(90deg)}.completion-card{display:block}.completion-card .button{margin-top:15px}.two-shot{grid-template-columns:1fr}}
@media(max-width:560px){body{font-size:16px}.brand img{width:185px}.hero h1{font-size:2.35rem}.lesson-head{gap:10px}.step-no{font-size:2rem}.lesson-foot{grid-template-columns:1fr 1fr}.complete{grid-column:1/-1;grid-row:1}.tabs{overflow-x:auto}.tabs button{white-space:nowrap;padding:10px}.hero-actions .button{width:100%}}
@media print{.topbar,.sidebar,.lesson-foot,.quiz,.hero-actions,.shot span,.toast{display:none!important}.layout{display:block}.lesson{box-shadow:none;border:0;page-break-after:always;max-width:none}.shot img{max-height:340px;object-fit:contain}.source-note{color:#000;background:#fff}}
.program-picker{border:0;padding:0;margin:26px 0 8px;display:flex;flex-wrap:wrap;gap:10px}.program-picker legend{font-weight:700;margin-bottom:9px;width:100%}.program-picker button{display:grid;grid-template-columns:1fr auto;text-align:left;min-width:230px;border:2px solid var(--line);border-radius:10px;background:#fff;padding:12px 15px;cursor:pointer}.program-picker button span{font-size:.78rem;color:var(--muted)}.program-picker button:hover{border-color:var(--teal)}.program-picker button.active{border-color:var(--teal);background:var(--soft);box-shadow:0 0 0 2px #fff inset}.program-picker button.active:after{content:'Ausgewählt ✓';grid-column:2;grid-row:1/3;align-self:center;color:var(--success);font-size:.72rem;font-weight:700;margin-left:15px}.program-status{min-height:1.3em;margin:7px 0;color:var(--teal-dark);font-size:.86rem;font-weight:700}.libre-note{background:var(--soft);border:1px solid #b8d8dd;padding:22px}.libre-note strong,.libre-note p{display:block}.libre-note strong{margin-top:12px}.libre-note p{margin-bottom:0;color:var(--muted)}[hidden]{display:none!important}
.page-number-visual{margin:26px 0;background:#f7f9fa;border:1px solid var(--line);padding:12px}.page-number-visual .shot{box-shadow:none}.page-number-visual .shot img{aspect-ratio:4.45/1;object-fit:cover;object-position:top}.page-number-visual figcaption{font-size:.88rem;color:var(--muted);padding:10px 6px 2px}.page-number-visual figcaption strong{color:var(--orange-dark)}.page-number-visual figcaption a{color:var(--teal-dark);font-weight:700}