:root{
  --bg:#090b0e; --panel:#11151a; --panel2:#171c22; --line:#2a3139;
  --text:#f4f5f6; --muted:#aab2bb; --orange:#ff8a1f; --yellow:#ffc04d;
  --green:#5fd38a; --red:#ff6262; --shadow:0 18px 60px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html,body{margin:0;height:100%;overflow:hidden;background:var(--bg);color:var(--text);font-family:Inter,Segoe UI,Arial,sans-serif}
body{background:
 radial-gradient(circle at 82% 15%,rgba(255,138,31,.12),transparent 28%),
 radial-gradient(circle at 15% 80%,rgba(255,192,77,.06),transparent 25%),var(--bg)}
button,a{font:inherit}
button{cursor:pointer}
.app-shell{height:100vh;display:flex;flex-direction:column;position:relative;z-index:2}
.topbar{height:64px;flex:0 0 64px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 28px;background:rgba(9,11,14,.82);backdrop-filter:blur(14px);z-index:20}
.brand{border:0;background:none;color:var(--text);display:flex;gap:12px;align-items:center;text-align:left;padding:0}
.brand-mark{display:grid;place-items:center;width:42px;height:42px;border:1px solid var(--orange);border-radius:12px;color:var(--orange);font-weight:900;letter-spacing:-1px;box-shadow:inset 0 0 22px rgba(255,138,31,.08)}
.brand strong{display:block;font-size:15px;letter-spacing:.4px}.brand small{display:block;color:var(--muted);font-size:10px;margin-top:3px}
.top-actions{display:flex;align-items:center;gap:16px}.page-counter{font-size:12px;color:var(--muted);letter-spacing:1px}
.icon-btn{border:1px solid var(--line);background:var(--panel);color:var(--text);width:40px;height:40px;border-radius:10px}
.side-menu{position:fixed;right:18px;top:82px;width:260px;background:#0f1317;border:1px solid var(--line);border-radius:16px;padding:10px;z-index:50;box-shadow:var(--shadow);display:none}
.side-menu.open{display:block}.side-menu button{width:100%;border:0;background:transparent;color:#cbd0d6;text-align:left;padding:10px 12px;border-radius:9px}.side-menu button:hover{background:#1a2027;color:#fff}.menu-head{display:flex;justify-content:space-between;color:var(--orange);font-size:11px;font-weight:800;padding:7px 9px 10px;letter-spacing:1.5px}.menu-head button{width:auto;color:#fff;padding:0 6px;font-size:22px}
main{flex:1;min-height:0;position:relative;z-index:3}.page{position:absolute;inset:0;padding:22px 6vw 90px;display:none;overflow-y:auto;overflow-x:hidden;scrollbar-width:thin;scrollbar-color:var(--line) transparent}.page.active{display:block;animation:fade .22s ease}.page-head{max-width:1050px;margin:0 auto 20px}.page-head.compact{margin-bottom:15px}.kicker,.eyebrow{font-size:11px;font-weight:900;letter-spacing:2px;color:var(--orange)}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(42px,6vw,76px);line-height:.96;letter-spacing:-3px;margin:14px 0 22px}h2{font-size:clamp(34px,4vw,54px);letter-spacing:-2px;line-height:1;margin:9px 0 12px}h1 span,h2 span{color:var(--orange)}.page-head p,.lead{color:var(--muted);max-width:820px;line-height:1.6}.hero-grid{min-height:calc(100vh - 164px);height:auto;display:grid;grid-template-columns:1.1fr .9fr;align-items:center;gap:40px;max-width:1250px;margin:auto}.hero-copy{padding-left:3vw}.hero-buttons{display:flex;gap:12px;margin:28px 0}.primary,.secondary{border-radius:11px;padding:12px 18px;border:1px solid var(--orange);font-weight:800;text-decoration:none;display:inline-flex;align-items:center;justify-content:center}.primary{background:var(--orange);color:#111}.secondary{background:#13181d;color:#fff;border-color:var(--line)}.mini-stats{display:flex;gap:10px}.mini-stats div{background:rgba(255,255,255,.035);border:1px solid var(--line);border-radius:12px;padding:10px 14px;min-width:105px}.mini-stats b{display:block;color:var(--orange);font-size:21px}.mini-stats span{font-size:10px;color:var(--muted)}
.hero-visual{position:relative;height:390px;display:grid;place-items:center}.weld-orb{width:min(360px,65vw);height:min(360px,65vw);border-radius:50%;border:1px solid #5b3c20;background:radial-gradient(circle at 50% 48%,#2a1b0e 0,#14110e 44%,#0d1014 70%);box-shadow:0 0 80px rgba(255,138,31,.13),inset 0 0 80px rgba(255,138,31,.08);display:grid;place-items:center;text-align:center}.arc{font-size:100px;color:var(--yellow);text-shadow:0 0 30px var(--orange);transform:rotate(-8deg)}.orb-label{font-weight:900;letter-spacing:2px;margin-top:-90px}.orb-label span{font-size:10px;color:var(--muted)}.floating-card{position:absolute;background:#13181d;border:1px solid var(--line);border-left:2px solid var(--orange);border-radius:12px;padding:11px 14px;font-weight:900;font-size:11px;box-shadow:var(--shadow)}.floating-card small{display:block;color:var(--muted);font-weight:500;margin-top:3px}.fc1{top:70px;left:2%}.fc2{right:2%;top:190px}.fc3{bottom:75px;left:13%}
.content-grid.four{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;max-width:1100px;margin:auto}.info-card{background:linear-gradient(145deg,#151a20,#101419);border:1px solid var(--line);border-radius:15px;padding:20px;min-height:235px;position:relative}.info-card .num{font-size:12px;color:var(--orange);font-weight:900}.info-card h3{font-size:21px;margin:40px 0 10px}.info-card p{color:var(--muted);font-size:13px;line-height:1.55}.chip,.project-tags{font-size:9px;letter-spacing:1.4px;color:var(--orange);font-weight:900}.diagram-card{max-width:1100px;margin:18px auto 0;border:1px solid var(--line);border-radius:15px;background:#0e1216;padding:18px}.diagram-label{font-size:9px;color:var(--muted);letter-spacing:1.5px}.process-line{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:13px;color:var(--orange);font-weight:900}.process-line i{color:#5e6872;font-style:normal}
.split{max-width:1100px;margin:auto;display:grid;grid-template-columns:.9fr 1.1fr;gap:22px;align-items:center}.machine-card{background:linear-gradient(145deg,#161b20,#0e1216);border:1px solid var(--line);border-radius:17px;padding:20px;min-height:390px}.machine-title{font-size:11px;letter-spacing:2px;color:var(--orange);font-weight:900}.weld-sketch,.mig-sketch,.tig-sketch{height:260px;position:relative;margin-top:10px}.plate{position:absolute;left:13%;right:13%;bottom:40px;height:34px;background:linear-gradient(#454b50,#1d2227);border-radius:4px;border:1px solid #58616a}.electrode{position:absolute;left:48%;top:18px;color:#ddd;font-size:75px;line-height:.5;transform:rotate(-8deg)}.electrode small{font-size:9px;color:var(--muted);position:absolute;left:35px;top:30px;white-space:nowrap;transform:rotate(8deg)}.arc-lines{position:absolute;left:49%;top:104px;color:var(--yellow);font-size:32px;line-height:.6;text-shadow:0 0 20px var(--orange)}.slag{position:absolute;left:39%;right:39%;bottom:75px;height:8px;background:#646b70;border-radius:10px}.torch{position:absolute;left:43%;top:24px;font-size:65px;color:#bbb}.wire{position:absolute;left:49%;top:82px;color:#eee;font-size:20px;line-height:.75}.gas{position:absolute;left:31%;top:90px;color:#8090a0;letter-spacing:4px;font-size:20px}.cup{position:absolute;left:45%;top:28px;font-size:58px;color:#bbb}.tungsten{position:absolute;left:49%;top:75px;color:#eee;font-size:45px}.tig-sketch .arc-lines{top:105px}.legend{display:flex;flex-wrap:wrap;gap:9px;font-size:9px;color:var(--muted);margin-top:5px}.detail-list{display:grid;gap:9px}.detail-list div{border:1px solid var(--line);background:#12171c;border-radius:11px;padding:13px 15px;display:grid;grid-template-columns:150px 1fr;gap:10px}.detail-list b{color:#fff;font-size:12px}.detail-list span{color:var(--muted);font-size:12px;line-height:1.45}.tipbar{max-width:1100px;margin:18px auto 0;border-left:3px solid var(--orange);background:#14191e;padding:13px 16px;color:#cbd0d6;font-size:12px;border-radius:0 10px 10px 0}
.safety-grid{max-width:1100px;margin:auto;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.safety-grid article{border:1px solid var(--line);border-radius:14px;padding:16px;background:#11161b}.safety-grid span{font-size:24px}.safety-grid h3{margin:12px 0 6px}.safety-grid p{font-size:11px;line-height:1.55;color:var(--muted)}
.timeline{max-width:1050px;margin:auto;display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.timeline div{background:#11161b;border:1px solid var(--line);border-radius:14px;padding:17px;min-height:125px}.timeline b{display:block;color:var(--orange);font-size:20px}.timeline span{display:block;color:var(--muted);font-size:11px;line-height:1.5;margin-top:8px}.link-strip{max-width:1050px;margin:18px auto 0;display:flex;gap:10px;flex-wrap:wrap}.link-strip a{border:1px solid var(--line);border-radius:10px;padding:9px 12px;color:#d9dee3;text-decoration:none;background:#11161b;font-size:11px}.link-strip a:hover{border-color:var(--orange);color:var(--orange)}
.scenario-box{max-width:900px;margin:20px auto 13px;border:1px solid var(--line);background:linear-gradient(145deg,#171d23,#101418);border-radius:17px;padding:28px;text-align:center}.scenario-box .scenario-label{font-size:10px;color:var(--orange);letter-spacing:1.6px;font-weight:900}.scenario-box h3{font-size:25px;margin:12px 0 5px}.scenario-box p{color:var(--muted);font-size:13px}.choice-grid{max-width:900px;margin:auto;display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.choice-btn{border:1px solid var(--line);background:#12171c;color:#fff;padding:15px;border-radius:12px;font-weight:900}.choice-btn:hover{border-color:var(--orange)}.feedback{max-width:900px;margin:13px auto;padding:14px;border-radius:12px;background:#151a20;border:1px solid var(--line);font-size:12px;line-height:1.5}.feedback.good{border-color:rgba(95,211,138,.5)}.feedback.warn{border-color:rgba(255,192,77,.5)}
.project-grid{max-width:1100px;margin:auto;display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.project-grid article{background:#11161b;border:1px solid var(--line);border-radius:15px;padding:18px;min-height:220px}.project-icon{font-size:30px}.project-grid h3{margin:14px 0 7px}.project-grid p{font-size:11px;line-height:1.55;color:var(--muted)}.project-tags{margin-top:14px}
.quiz-top{max-width:1050px;margin:auto;display:flex;align-items:center;gap:12px;font-size:11px;color:var(--muted)}.progress-wrap{height:7px;background:#1a2026;border-radius:10px;overflow:hidden;flex:1}.progress-wrap div{height:100%;background:var(--orange);width:0;transition:.2s}.quiz-card{max-width:1050px;margin:14px auto 10px;border:1px solid var(--line);border-radius:17px;background:#11161b;padding:20px}.q-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:10px;margin-bottom:10px}.difficulty{padding:4px 7px;border-radius:8px;background:#1b2025;color:var(--orange);font-weight:900}.quiz-card h3{font-size:22px;line-height:1.25;margin-bottom:16px}.answers{display:grid;grid-template-columns:1fr 1fr;gap:9px}.answer{border:1px solid var(--line);border-radius:11px;padding:13px;background:#0e1317;color:#dfe3e6;text-align:left;display:flex;gap:10px;align-items:flex-start}.answer input{accent-color:var(--orange);margin-top:2px}.answer.selected{border-color:var(--orange);background:#1c1711}.answer.correct{border-color:var(--green)}.answer.wrong{border-color:var(--red)}.explanation{margin-top:13px;padding:11px 13px;border-radius:10px;background:#171c21;color:#cbd0d6;font-size:11px;line-height:1.5}.quiz-actions{max-width:1050px;margin:auto;display:flex;gap:9px;justify-content:flex-end}.hidden{display:none!important}.result-card{max-width:700px;margin:18px auto;padding:25px;text-align:center;border:1px solid var(--line);background:#12171c;border-radius:16px}.result-card .big-score{font-size:54px;color:var(--orange);font-weight:900}.result-card p{color:var(--muted)}.result-card .result-links{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.finish-wrap{height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;max-width:900px;margin:auto}.finish-wrap .lead{max-width:650px}.certificate-preview{margin:18px 0;background:#efe6d2;color:#191817;border:8px double #9e7b40;width:min(650px,90vw);padding:28px;box-shadow:0 18px 70px rgba(0,0,0,.35)}.cert-small{font-size:10px;letter-spacing:3px}.cert-title{font-size:30px;letter-spacing:5px;margin:15px 0;color:#775622}.cert-name{font-family:Georgia,serif;font-size:38px;margin:8px}.cert-line{margin:13px;font-size:12px;letter-spacing:1px}.certificate-preview small{font-size:9px}.finish-actions{display:flex;gap:9px;flex-wrap:wrap;justify-content:center}.link-button{cursor:pointer}.disclaimer{font-size:9px;color:#77808a;max-width:720px;line-height:1.45;margin-top:15px}
.footer{position:relative;height:31px;flex:0 0 31px;display:flex;justify-content:space-between;align-items:center;padding:0 28px;border-top:1px solid var(--line);font-size:9px;color:#6f7881;background:#090b0e;z-index:10}
@keyframes fade{from{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}
@media(max-width:900px){
 .page{padding:18px 22px 88px;overflow:auto}.hero-grid{grid-template-columns:1fr}.hero-copy{padding-left:0}.hero-visual{height:300px;display:none}.content-grid.four,.project-grid{grid-template-columns:1fr 1fr}.split{grid-template-columns:1fr}.machine-card{min-height:270px}.safety-grid,.timeline{grid-template-columns:1fr 1fr}.answers{grid-template-columns:1fr}.page-head{margin-bottom:18px}.footer{display:none}
}
@media(max-width:560px){
 .topbar{padding:0 14px}.brand small{display:none}.page{padding:22px 15px 30px}h1{font-size:43px;letter-spacing:-2px}h2{font-size:34px}.content-grid.four,.project-grid,.safety-grid,.timeline{grid-template-columns:1fr}.mini-stats{overflow:auto}.mini-stats div{min-width:92px}.detail-list div{grid-template-columns:1fr}.quiz-top{flex-wrap:wrap}.quiz-top .progress-wrap{order:4;flex-basis:100%}.quiz-card h3{font-size:18px}.choice-grid{grid-template-columns:1fr}.process-line{font-size:9px}.process-line i{display:none}.finish-actions{flex-direction:column;width:100%}.finish-actions a{width:100%}
}

/* --- Erweiterungen: geführte Navigation, beschriftete Diagramme, Materialparameter --- */
.course-nav{position:fixed;left:0;right:0;bottom:0;height:68px;display:grid;grid-template-columns:150px 1fr 150px;align-items:center;gap:18px;padding:8px 5vw;background:rgba(9,11,14,.94);border-top:1px solid var(--line);backdrop-filter:blur(16px);z-index:30}
.course-nav button{min-height:42px}.course-nav-center{text-align:center;color:var(--muted);font-size:9px;letter-spacing:1.8px;font-weight:900}.course-nav-center>div{display:flex;justify-content:center;gap:5px;margin-top:6px}.course-nav-center button{width:22px;height:4px;min-height:4px;padding:0;border:0;border-radius:5px;background:#2a3139}.course-nav-center button.active{background:var(--orange);width:32px}
.page{padding-bottom:105px}.page[data-page="home"]{padding-bottom:90px}
.diagram-svg{height:270px!important;margin-top:6px}.diagram-svg svg{width:100%;height:100%;overflow:visible}.svg-plate{fill:#292f35;stroke:#626a72;stroke-width:1.5}.svg-seam{stroke:#ff8a1f;stroke-width:7;stroke-linecap:round;filter:drop-shadow(0 0 5px rgba(255,138,31,.35))}.svg-electrode,.svg-wire,.svg-tungsten{stroke:#d7dce0;stroke-width:10;stroke-linecap:round}.svg-tungsten{stroke-width:7}.svg-arc{fill:none;stroke:#ffc04d;stroke-width:5;stroke-linecap:round;filter:drop-shadow(0 0 7px rgba(255,138,31,.8))}.svg-slag{fill:none;stroke:#727a80;stroke-width:8;stroke-linecap:round}.svg-gas{fill:none;stroke:#778898;stroke-width:22;stroke-linecap:round;opacity:.38}.svg-filler{stroke:#e4e7e9;stroke-width:7;stroke-linecap:round}.svg-arrow{stroke:#ff8a1f;stroke-width:2;fill:none}.svg-label{fill:#f4f5f6;font-size:15px;font-weight:800;font-family:Inter,Segoe UI,Arial,sans-serif}
.material-layout{max-width:1100px;margin:auto;display:grid;grid-template-columns:230px 1fr;gap:16px;align-items:stretch}.material-cards{display:grid;gap:10px}.material-card{border:1px solid var(--line);background:#11161b;border-radius:14px;padding:17px;cursor:pointer;transition:.18s}.material-card:hover,.material-card.active{border-color:var(--orange);transform:translateX(3px);background:#171a1d}.material-icon{font-size:28px;color:var(--orange)}.material-card h3{margin:9px 0 5px}.material-card p{margin:0;color:var(--muted);font-size:11px;line-height:1.45}.parameter-card{border:1px solid var(--line);border-radius:16px;background:#10151a;padding:18px;min-width:0}.parameter-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.parameter-head h3{margin:6px 0 0;font-size:18px}.parameter-badge{font-size:9px;color:var(--orange);border:1px solid #6d431f;border-radius:999px;padding:6px 9px;white-space:nowrap;font-weight:900}.table-scroll{overflow:auto;margin-top:15px}.parameter-table{width:100%;border-collapse:collapse;font-size:11px;min-width:650px}.parameter-table th{text-align:left;color:var(--orange);font-size:9px;letter-spacing:.8px;border-bottom:1px solid var(--line);padding:9px 8px}.parameter-table td{border-bottom:1px solid #232a31;padding:10px 8px;color:#cdd3d8;vertical-align:top}.parameter-table tr:last-child td{border-bottom:0}.parameter-table td.thick{color:#fff;font-weight:900}.table-note{color:#8f99a3;font-size:10px;line-height:1.5;margin:13px 0 0}.parameter-rules{max-width:1100px;margin:13px auto 0;display:flex;flex-wrap:wrap;gap:8px}.parameter-rules span{font-size:9px;color:#cbd0d6;background:#11161b;border:1px solid var(--line);border-radius:999px;padding:7px 10px}
@media(max-width:850px){
 .course-nav{grid-template-columns:105px 1fr 105px;padding:8px 12px;gap:8px}
 .material-layout{grid-template-columns:1fr}.material-cards{grid-template-columns:repeat(3,1fr)}.material-card{padding:11px}.material-card p{display:none}
 .diagram-svg{height:245px!important}.svg-label{font-size:12px}
}
@media(max-width:600px){
 .topbar{padding:0 14px;height:58px;flex-basis:58px}.brand-mark{width:36px;height:36px}.page{padding:16px 15px 92px}.page-head{margin-bottom:15px}h1{font-size:42px;letter-spacing:-2px}h2{font-size:34px}.content-grid.four,.safety-grid,.project-grid,.timeline{grid-template-columns:1fr 1fr}.split{grid-template-columns:1fr}.machine-card{min-height:330px}.detail-list div{grid-template-columns:105px 1fr}.answers{grid-template-columns:1fr}.quiz-card h3{font-size:18px}.course-nav{height:62px;grid-template-columns:94px 1fr 94px}.course-nav button{padding:9px 10px}.course-nav-center{font-size:8px}.course-nav-center>div{display:none}.material-cards{gap:6px}.parameter-card{padding:12px}.parameter-rules{display:none}.diagram-svg{height:210px!important}.svg-label{font-size:10px}
}


/* --- Abschlussrede & Namensherkunft --- */
.name-origin{max-width:1100px;margin:-4px auto 18px;padding:16px 18px;border:1px solid var(--line);border-radius:15px;background:linear-gradient(145deg,#141a1f,#0f1317);box-shadow:inset 0 1px 0 rgba(255,255,255,.02)}
.name-origin-label{font-size:9px;letter-spacing:1.8px;color:var(--orange);font-weight:900;margin-bottom:7px}.name-origin h3{margin:0 0 7px;font-size:17px}.name-origin h3 span{color:#fff}.name-origin p{margin:0;color:#aeb6be;font-size:11px;line-height:1.55}.name-origin b{color:#e8ecef}
.final-speech{max-width:820px}.thank-badge{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;margin:3px auto 14px;border:1px solid #76501e;background:radial-gradient(circle at 35% 30%,#3a2813,#15100a);color:var(--orange);font-size:24px;box-shadow:0 0 30px rgba(255,138,31,.12)}.final-speech .lead{max-width:720px}.finish-speech{max-width:720px;margin:8px auto 18px;color:#c6cdd4;font-size:13px;line-height:1.65}.finish-speech p{margin:10px 0}.finish-speech strong{color:#fff}.finish-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;width:100%;margin:6px 0 4px}.finish-steps>div{border:1px solid var(--line);border-radius:13px;background:#11161b;padding:16px 12px;text-align:center}.finish-steps span{display:block;font-size:10px;letter-spacing:1.6px;color:var(--orange);font-weight:900;margin-bottom:8px}.finish-steps b{display:block;font-size:12px;color:#eef1f3}.finish-steps small{display:block;color:#7f8993;font-size:10px;margin-top:5px;line-height:1.4}.finish-wrap .disclaimer{margin-top:14px}
@media(max-width:700px){.finish-steps{grid-template-columns:1fr}.name-origin{margin-bottom:13px}.final-speech .lead{font-size:13px}}

.course-nav button:disabled{opacity:.38;cursor:not-allowed;transform:none!important}.course-nav-center button:disabled{opacity:.28;cursor:not-allowed}


/* --- Forge FX / Gameification --- */
#fxCanvas{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:12;opacity:.72;mix-blend-mode:screen}
.fx-scanlines{position:fixed;inset:0;pointer-events:none;z-index:18;opacity:.035;background:repeating-linear-gradient(to bottom,rgba(255,255,255,.55) 0,rgba(255,255,255,.55) 1px,transparent 1px,transparent 4px);mix-blend-mode:screen}
.fx-vignette{position:fixed;inset:0;pointer-events:none;z-index:17;background:radial-gradient(ellipse at center,transparent 48%,rgba(0,0,0,.38) 100%);opacity:.55}
.app-shell{position:relative;z-index:3}
.topbar,.course-nav,.footer{position:relative}
.game-hud{display:flex;align-items:center;gap:7px;margin-right:2px}
.hud-level,.hud-xp{font-size:9px;font-weight:900;letter-spacing:1px;border:1px solid var(--line);border-radius:999px;padding:7px 9px;background:rgba(17,21,26,.72);box-shadow:inset 0 0 18px rgba(255,138,31,.03)}
.hud-level{color:var(--orange);border-color:#604019}.hud-xp{color:#dce2e7}
.top-actions{gap:9px}
.weld-orb{animation:orbPulse 3.8s ease-in-out infinite}
.arc{animation:arcFlicker 1.4s steps(2,end) infinite}
.floating-card{animation:floatCard 4.2s ease-in-out infinite}
.fc2{animation-delay:-1.2s}.fc3{animation-delay:-2.4s}
.svg-arc{animation:arcGlow .75s ease-in-out infinite alternate}
.svg-gas{stroke-dasharray:12 8;animation:gasFlow 1.4s linear infinite}
.svg-seam{stroke-dasharray:5 3;animation:seamShimmer 1.7s linear infinite}
.finish-seal{width:112px;height:112px;position:relative;margin:0 auto 10px;display:grid;place-items:center;filter:drop-shadow(0 0 24px rgba(255,138,31,.18));animation:sealFloat 3s ease-in-out infinite}
.finish-seal-ring{position:absolute;inset:0;border-radius:50%;background:conic-gradient(from 0deg,#5b3b1b,#ff8a1f,#ffc04d,#5b3b1b);mask:radial-gradient(circle,transparent 61%,#000 63%);-webkit-mask:radial-gradient(circle,transparent 61%,#000 63%);animation:spin 7s linear infinite}
.finish-seal-ring:before,.finish-seal-ring:after{content:"";position:absolute;inset:8px;border:1px solid rgba(255,192,77,.35);border-radius:50%}
.finish-seal-core{width:78px;height:78px;border-radius:50%;display:grid;place-items:center;align-content:center;gap:2px;text-align:center;border:1px solid #76501e;background:radial-gradient(circle at 35% 25%,#3c2812,#100d09 70%);box-shadow:inset 0 0 25px rgba(255,138,31,.08),0 0 20px rgba(255,138,31,.12)}
.finish-seal-core span{color:var(--yellow);font-size:18px;line-height:1;text-shadow:0 0 10px var(--orange)}
.finish-seal-core small{font-size:7px;letter-spacing:1.1px;font-weight:900;color:#d7dde2;line-height:1.2}
.achievement-toast{position:fixed;right:22px;bottom:84px;z-index:40;min-width:240px;max-width:320px;display:flex;align-items:center;gap:10px;padding:11px 13px;border:1px solid #5e3f1e;border-left:2px solid var(--orange);border-radius:12px;background:rgba(15,19,23,.92);backdrop-filter:blur(12px);box-shadow:0 18px 50px rgba(0,0,0,.4);opacity:0;transform:translateY(14px) scale(.98);pointer-events:none;transition:.25s ease}
.achievement-toast.show{opacity:1;transform:none}
.toast-icon{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;background:#24170d;color:var(--yellow);border:1px solid #69441d;font-weight:900}
.achievement-toast b{display:block;font-size:10px;color:var(--orange);letter-spacing:.8px}.achievement-toast small{display:block;color:#c5ccd2;font-size:10px;margin-top:3px;line-height:1.3}
.page.active .page-head,.page.active .content-grid,.page.active .split,.page.active .safety-grid,.page.active .timeline,.page.active .scenario-box,.page.active .project-grid,.page.active .quiz-card,.page.active .finish-wrap{animation:riseIn .42s ease both}
.page.active .info-card:nth-child(2),.page.active .safety-grid article:nth-child(2),.page.active .project-grid article:nth-child(2){animation-delay:.05s}.page.active .info-card:nth-child(3),.page.active .safety-grid article:nth-child(3),.page.active .project-grid article:nth-child(3){animation-delay:.1s}.page.active .info-card:nth-child(4),.page.active .safety-grid article:nth-child(4),.page.active .project-grid article:nth-child(4){animation-delay:.15s}
.hero-buttons .primary{box-shadow:0 0 0 rgba(255,138,31,0);animation:buttonReady 2.7s ease-in-out infinite}

@keyframes orbPulse{0%,100%{transform:scale(1)}50%{transform:scale(1.015);box-shadow:0 0 88px rgba(255,138,31,.16),inset 0 0 80px rgba(255,138,31,.08)}}
@keyframes arcFlicker{0%,100%{opacity:1;transform:rotate(-8deg) scale(1)}35%{opacity:.72;transform:rotate(-6deg) scale(.96)}70%{opacity:1;transform:rotate(-11deg) scale(1.04)}}
@keyframes floatCard{0%,100%{transform:translateY(0)}50%{transform:translateY(-7px)}}
@keyframes arcGlow{from{filter:drop-shadow(0 0 4px rgba(255,138,31,.45))}to{filter:drop-shadow(0 0 12px rgba(255,138,31,.95))}}
@keyframes gasFlow{to{stroke-dashoffset:-40}}
@keyframes seamShimmer{to{stroke-dashoffset:-20}}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes sealFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-5px)}}
@keyframes riseIn{from{opacity:0;transform:translateY(9px)}to{opacity:1;transform:none}}
@keyframes buttonReady{0%,100%{box-shadow:0 0 0 rgba(255,138,31,0)}50%{box-shadow:0 0 24px rgba(255,138,31,.11)}}
@media(max-width:600px){.game-hud{display:none}.achievement-toast{left:14px;right:14px;bottom:70px;min-width:0}.fx-scanlines{opacity:.035}.fx-vignette{opacity:.42}}
@keyframes fxScreenFlicker{0%,92%,100%{opacity:.035}93%{opacity:.07}94%{opacity:.025}95%{opacity:.055}96%{opacity:.02}}
.fx-scanlines{animation:fxScreenFlicker 6.8s steps(1,end) infinite}
.fx-vignette{animation:fxVignettePulse 4.6s ease-in-out infinite}
@keyframes fxVignettePulse{0%,100%{opacity:.48}50%{opacity:.58}}
@media(prefers-reduced-motion:reduce){.fx-scanlines,.fx-vignette{animation:none!important}}
@media(prefers-reduced-motion:reduce){#fxCanvas,.fx-scanlines{display:none}.weld-orb,.arc,.floating-card,.svg-arc,.svg-gas,.svg-seam,.finish-seal,.hero-buttons .primary{animation:none!important}.page.active .page-head,.page.active .content-grid,.page.active .split,.page.active .safety-grid,.page.active .timeline,.page.active .scenario-box,.page.active .project-grid,.page.active .quiz-card,.page.active .finish-wrap{animation:none!important}}


/* --- Einstieg: Stromquelle, AC/DC & Hartlöten --- */
.power-intro-grid{max-width:1100px;margin:auto;display:grid;grid-template-columns:1.35fr .65fr;gap:16px;align-items:stretch}.power-copy,.power-mini-card,.power-card{background:linear-gradient(145deg,#151a20,#0f1418);border:1px solid var(--line);border-radius:17px}.power-copy{padding:22px}.power-badge{display:inline-flex;align-items:center;gap:8px;border:1px solid #5e3f1e;border-radius:999px;padding:7px 10px;color:var(--orange);font-size:9px;font-weight:900;letter-spacing:1.2px}.pulse-dot{width:7px;height:7px;border-radius:50%;background:var(--orange);box-shadow:0 0 12px var(--orange);animation:dotPulse 1.1s ease-in-out infinite}.power-copy h3{font-size:24px;line-height:1.2;margin:15px 0 10px}.power-copy h3 span{color:var(--orange)}.power-copy p,.current-explain{font-size:12px;line-height:1.58;color:var(--muted)}.acdc-switch{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.acdc-switch button{border:1px solid var(--line);background:#0f1418;color:#cdd4da;border-radius:10px;padding:9px 12px;font-weight:900;font-size:10px}.acdc-switch button.active{border-color:var(--orange);color:#fff;box-shadow:inset 0 0 18px rgba(255,138,31,.07)}.current-explain{margin-top:12px;padding:11px 13px;border-left:3px solid var(--orange);background:#11171c;border-radius:0 10px 10px 0}.current-explain b{color:var(--orange)}.power-mini-card{padding:18px}.mini-title{color:var(--muted);font-size:9px;font-weight:900;letter-spacing:1.7px;margin-bottom:14px}.wave-row{display:grid;grid-template-columns:28px 1fr;gap:8px;align-items:center;margin:12px 0}.wave-row>span{color:var(--orange);font-weight:900;font-size:11px}.wave-row small{grid-column:2;color:#7d8791;font-size:9px}.wave-track{height:30px;border:1px solid var(--line);border-radius:9px;position:relative;overflow:hidden;background:#0c1014}.flow-dot{position:absolute;top:10px;width:8px;height:8px;border-radius:50%;background:var(--yellow);box-shadow:0 0 12px var(--orange)}.dc-dot{animation:flowRight 1.8s linear infinite}.ac-dot{animation:flowBounce 1.15s ease-in-out infinite}.dc-arrow,.ac-arrow{position:absolute;right:8px;top:6px;color:#59636d;font-size:11px;letter-spacing:2px}.ac-arrow{left:8px;right:auto}.mini-note{margin-top:14px;padding-top:12px;border-top:1px solid var(--line);color:#89939d;font-size:9px;line-height:1.5}.power-diagram-grid{max-width:1100px;margin:16px auto 0;display:grid;grid-template-columns:1fr 1.18fr;gap:16px}.power-card{padding:18px;overflow:hidden}.power-card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px}.power-card-head h3{margin:5px 0 2px;font-size:18px}.power-card-head small{display:block;color:#7f8993;font-size:9px;line-height:1.35}.power-tag{color:var(--orange);border:1px solid #5e3f1e;border-radius:999px;padding:5px 8px;font-size:8px;font-weight:900;white-space:nowrap}.power-schematic{height:220px;margin:9px -4px 3px}.power-schematic svg{width:100%;height:100%;overflow:visible}.circuit-line{stroke:#4e5964;stroke-width:5;stroke-linecap:round}.schem-box{fill:#11171c;stroke:#39434d;stroke-width:1.5}.schem-box.mains{stroke:#6d431f}.schem-box.trafo{stroke:#80511f}.schem-box.output{stroke:#4c5b68}.coil{fill:none;stroke:url(#copperGlow);stroke-width:7;stroke-linecap:round}.core{stroke:#77828d;stroke-width:5;stroke-linecap:round}.schem-label{fill:#eef1f4;font-family:Inter,Segoe UI,Arial,sans-serif;font-weight:900;font-size:14px;text-anchor:middle}.schem-sub{fill:#89939d;font-family:Inter,Segoe UI,Arial,sans-serif;font-size:11px;text-anchor:middle}.travelling-dot{fill:var(--orange);filter:drop-shadow(0 0 6px rgba(255,138,31,.8))}.travelling-dot.soft{fill:var(--yellow);opacity:.6}.inverter-card .stage rect{fill:#11171c;stroke:#39434d;stroke-width:1.2}.inverter-card .stage:nth-child(2) rect{stroke:#5d431f}.inverter-card .stage:nth-child(4) rect{stroke:#6d431f}.power-card>p{font-size:11px;color:var(--muted);line-height:1.55;margin:4px 0 0}.join-comparison{max-width:1100px;margin:18px auto 0}.join-heading h3{font-size:22px;margin:6px 0}.join-heading p{color:var(--muted);font-size:11px;margin:0}.join-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:12px}.join-card{background:#11161b;border:1px solid var(--line);border-radius:15px;padding:15px}.join-card h4{font-size:10px;letter-spacing:1.3px;margin:10px 0 7px;color:#eef1f3}.join-card p{font-size:10px;color:var(--muted);line-height:1.55;margin:0}.join-pill{display:inline-block;margin-top:10px;padding:6px 8px;border-radius:999px;border:1px solid #5e3f1e;color:var(--orange);font-size:8px;font-weight:900}.join-visual{height:95px;position:relative;border-radius:11px;background:radial-gradient(circle at 50% 70%,rgba(255,138,31,.11),transparent 55%),#0c1014;overflow:hidden}.heat-arc,.torch-flame{position:absolute;left:50%;top:13px;transform:translateX(-50%);color:var(--yellow);font-size:38px;text-shadow:0 0 20px var(--orange);animation:arcFlicker .75s steps(2,end) infinite}.base-bars,.brazed-bars{position:absolute;left:17%;right:17%;bottom:18px;height:17px;border-radius:3px;background:#49515a;box-shadow:0 0 0 1px #67717b}.base-bars:after{content:"";position:absolute;left:47%;top:-2px;width:6%;height:22px;background:var(--orange);box-shadow:0 0 13px rgba(255,138,31,.8);animation:moltenPulse 1.1s ease-in-out infinite}.brazed-bars:after{content:"";position:absolute;left:45%;top:4px;width:10%;height:8px;background:#d89a45;box-shadow:0 0 10px rgba(216,154,69,.55)}.capillary-line{position:absolute;left:50%;bottom:25px;width:120px;height:4px;border-radius:10px;background:#d89a45;transform:translateX(-50%);animation:capillaryFlow 1.4s ease-in-out infinite}.history-quick{max-width:1100px;margin:14px auto 0;display:grid;grid-template-columns:repeat(4,1fr);gap:9px}.history-quick>div{border:1px solid var(--line);border-radius:12px;background:#0f1418;padding:11px}.history-quick span{display:block;color:var(--orange);font-size:8px;font-weight:900;letter-spacing:1.2px}.history-quick b{display:block;font-size:11px;margin:5px 0 3px}.history-quick small{display:block;color:#7e8993;font-size:9px;line-height:1.35}.choice-btn:disabled{opacity:.45;cursor:default;transform:none}.choice-complete-btn{grid-column:1/-1;justify-self:center}.page[data-page="power"] .page-head{margin-bottom:18px}@keyframes flowRight{from{left:-8px}to{left:calc(100% + 2px)}}@keyframes flowBounce{0%,100%{left:-8px}50%{left:calc(100% - 2px)}}@keyframes dotPulse{0%,100%{transform:scale(.8);opacity:.7}50%{transform:scale(1.35);opacity:1}}@keyframes moltenPulse{0%,100%{transform:scaleY(.8);opacity:.7}50%{transform:scaleY(1.5);opacity:1}}@keyframes capillaryFlow{0%{transform:translateX(-50%) scaleX(.4);opacity:.35}50%{transform:translateX(-50%) scaleX(1);opacity:1}100%{transform:translateX(-50%) scaleX(.5);opacity:.5}}
@media(max-width:950px){.power-intro-grid,.power-diagram-grid{grid-template-columns:1fr}.history-quick{grid-template-columns:1fr 1fr}.power-schematic{height:230px}}
@media(max-width:620px){.join-grid,.history-quick{grid-template-columns:1fr}.power-copy,.power-card,.power-mini-card{padding:14px}.power-copy h3{font-size:20px}.power-schematic{height:210px}.power-card-head{display:block}.power-tag{display:inline-block;margin-bottom:5px}}
@media(prefers-reduced-motion:reduce){.pulse-dot,.flow-dot,.heat-arc,.torch-flame,.base-bars:after,.capillary-line{animation:none!important}.travelling-dot{display:none}}


/* --- 911luftboxer.de Markenrahmen --- */
.parent-site{display:inline-flex;align-items:center;gap:6px;color:var(--yellow);text-decoration:none;font-size:10px;font-weight:900;letter-spacing:1.2px;border:1px solid #5a431e;background:rgba(255,192,77,.035);padding:8px 10px;border-radius:999px}.parent-site:hover{border-color:var(--orange);color:#fff;box-shadow:0 0 18px rgba(255,138,31,.08)}
.brand-context{max-width:770px;margin:4px 0 10px}.brand-context>div{border-top:1px solid rgba(255,138,31,.22);border-bottom:1px solid rgba(255,138,31,.12);padding:10px 12px;background:linear-gradient(90deg,rgba(255,138,31,.055),transparent 75%);border-radius:9px}.brand-context-kicker{display:block;color:var(--orange);font-size:8px;font-weight:900;letter-spacing:1.6px}.brand-context b{display:block;font-size:12px;margin-top:4px}.brand-context small{display:block;color:#7f8993;font-size:9px;margin-top:4px;line-height:1.35}.mono-icon,.rule-mark,.safety-icon,.project-icon,.tip-mark{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1;color:var(--orange);font-weight:900}.mono-icon{display:inline-grid;place-items:center;min-width:30px;height:18px;padding:0 5px;border:1px solid #69451d;border-radius:999px;font-size:8px;letter-spacing:.8px;margin-right:5px}.tip-mark{display:inline-block;width:18px;color:var(--yellow);text-align:center}.rule-mark{display:inline-grid;place-items:center;width:18px;height:18px;margin-right:6px;border:1px solid #63431e;border-radius:50%;color:var(--yellow);font-size:9px}.safety-icon{display:inline-grid;place-items:center;width:31px;height:31px;border:1px solid #6d4a20;border-radius:9px;font-size:10px;letter-spacing:1px;background:rgba(255,138,31,.04)}.safety-grid article>span:not(.safety-icon){color:var(--orange)}.project-icon{display:grid;place-items:center;width:48px;height:48px;border:1px solid #6b481d;border-radius:14px;background:linear-gradient(145deg,rgba(255,138,31,.08),rgba(255,255,255,.02));font-size:12px;letter-spacing:1.5px;box-shadow:inset 0 0 16px rgba(255,138,31,.04)}.project-grid article:hover .project-icon{border-color:var(--orange);box-shadow:0 0 22px rgba(255,138,31,.11),inset 0 0 20px rgba(255,138,31,.06)}.site-signature{position:relative;z-index:5;max-width:1100px;margin:10px auto 0;padding:10px 14px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-top:1px solid rgba(255,138,31,.12);color:#7f8993;font-size:9px;letter-spacing:1.2px}.site-signature span{color:var(--orange);font-weight:900}.site-signature b{font-size:8px;font-weight:800;color:#a7b0b8}.site-signature a{color:#d9dee3;text-decoration:none;border-bottom:1px dotted #5e6872}.site-signature a:hover{color:var(--yellow)}
@media(max-width:900px){.parent-site{display:none}.site-signature{display:block}.site-signature b,.site-signature a{display:block;margin-top:4px}}

/* --- Einfacher Teilnehmer-Zugang --- */
body.login-locked .app-shell{filter:blur(2px);pointer-events:none;user-select:none}
.login-gate{position:fixed;inset:0;z-index:9999;display:grid;place-items:center;padding:18px;background:
  radial-gradient(circle at 50% 35%,rgba(255,138,31,.10),transparent 34%),
  linear-gradient(180deg,rgba(6,8,10,.96),rgba(9,11,14,.985));
  backdrop-filter:blur(12px)}
.login-gate.hidden{display:none}
.login-panel{width:min(420px,92vw);padding:30px 28px 24px;background:linear-gradient(145deg,#151a20,#0d1216);border:1px solid #4b3925;border-radius:22px;box-shadow:0 26px 90px rgba(0,0,0,.55),inset 0 0 40px rgba(255,138,31,.025);position:relative;overflow:hidden}
.login-panel:before{content:"";position:absolute;inset:0;pointer-events:none;background:repeating-linear-gradient(180deg,rgba(255,255,255,.018) 0,rgba(255,255,255,.018) 1px,transparent 1px,transparent 4px);opacity:.32}
.login-badge{position:relative;z-index:1;width:58px;height:58px;display:grid;place-items:center;border:1px solid var(--orange);border-radius:16px;color:var(--orange);font-weight:1000;font-size:20px;letter-spacing:-1.5px;box-shadow:0 0 30px rgba(255,138,31,.12),inset 0 0 20px rgba(255,138,31,.07)}
.login-kicker{position:relative;z-index:1;margin-top:18px;color:var(--orange);font-size:9px;font-weight:900;letter-spacing:1.7px}
.login-panel h1{position:relative;z-index:1;margin:7px 0 8px;font-size:34px;line-height:1.05}
.login-lead{position:relative;z-index:1;color:var(--muted);font-size:12px;line-height:1.55;margin:0 0 18px}
.login-lead strong{color:#fff}
#loginForm{position:relative;z-index:1;display:grid;gap:8px}
#loginForm label{color:#d8dde2;font-size:10px;font-weight:800;letter-spacing:.7px;margin-top:4px}
#loginForm input{width:100%;padding:12px 13px;border-radius:10px;border:1px solid #323a43;background:#0a0e12;color:#fff;outline:none;font-size:13px}
#loginForm input:focus{border-color:var(--orange);box-shadow:0 0 0 3px rgba(255,138,31,.08)}
.login-submit{width:100%;margin-top:8px}
.login-error{min-height:17px;margin:4px 0 0;color:#ff8d73;font-size:10px;font-weight:800}
.login-foot{position:relative;z-index:1;border-top:1px solid var(--line);margin-top:15px;padding-top:12px;color:#7e8993;font-size:9px;text-align:center;letter-spacing:.8px}
@media(max-width:620px){.login-panel{padding:24px 20px 20px;border-radius:18px}.login-panel h1{font-size:29px}.login-gate{padding:12px}}
@media(prefers-reduced-motion:reduce){.login-panel{box-shadow:0 20px 60px rgba(0,0,0,.5)}}
.logout-btn{border:1px solid #4b3925;background:rgba(255,138,31,.04);color:#d0d6dc;border-radius:999px;padding:7px 9px;font-size:8px;font-weight:900;letter-spacing:1px}.logout-btn:hover{border-color:var(--orange);color:#fff}
@media(max-width:900px){.logout-btn{display:none}}