846 lines
42 KiB
HTML
846 lines
42 KiB
HTML
<!DOCTYPE html>
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<html lang="de">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title>Elektromagnetische Schalter | Steuerungstechnik</title>
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<link rel="preconnect" href="https://fonts.googleapis.com">
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<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
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<link href="https://fonts.googleapis.com/css2?family=Exo+2:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&family=Share+Tech+Mono&display=swap" rel="stylesheet">
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<style>
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:root{
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--bg:#f9fafb;
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--bg2:#f3f4f6;
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--panel:#ffffff;
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--accent:#16a34a;
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--accent-dark:#15803d;
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--accent-soft:#f0fdf4;
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--amber:#ca8a04;
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--amber-soft:#fef9c3;
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--text:#111827;
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--muted:#6b7280;
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--danger:#dc2626;
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--danger-soft:#fef2f2;
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--border:#d1fae5;
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--border-soft:#e5e7eb;
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--glow:0 2px 16px rgba(22,163,74,.15);
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}
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*{box-sizing:border-box}
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html{scroll-behavior:smooth}
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body{margin:0;font-family:'Exo 2',system-ui,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden}
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h1,h2,h3,h4{font-family:'Outfit',sans-serif;letter-spacing:-.01em}
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.mono{font-family:'Share Tech Mono',monospace}
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/* ─── NAV ──────────────────────────────────── */
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nav{position:sticky;top:0;z-index:200;background:rgba(255,255,255,.97);backdrop-filter:blur(10px);border-bottom:1px solid var(--border);box-shadow:0 1px 12px rgba(0,0,0,.04)}
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.nav-inner{max-width:1200px;margin:0 auto;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;padding:.85rem 1.25rem;gap:.5rem}
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.logo{font-family:'Outfit',sans-serif;font-weight:700;font-size:1.05rem;color:var(--accent);letter-spacing:-.02em}
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.nav-links{display:flex;flex-wrap:wrap;gap:.2rem;list-style:none;margin:0;padding:0;justify-content:flex-end}
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.nav-links a{color:#374151;text-decoration:none;font-size:.82rem;font-weight:500;padding:.45rem .7rem;border-radius:8px;transition:.2s}
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.nav-links a:hover{color:var(--accent);background:var(--accent-soft)}
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#menu-btn{display:none;background:var(--panel);border:1px solid var(--accent);color:var(--accent);padding:.5rem .9rem;border-radius:8px;cursor:pointer;font-family:'Outfit',sans-serif;font-size:.85rem;font-weight:600}
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@media(max-width:960px){
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#menu-btn{display:block}
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.nav-links{display:none;width:100%;flex-direction:column;gap:0;padding:.5rem 0;align-items:stretch}
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.nav-links.open{display:flex}
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.nav-inner{align-items:flex-start;flex-direction:column}
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}
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/* ─── REVEAL ANIMATION ──────────────────────── */
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.reveal{opacity:0;transform:translateY(28px);transition:opacity .65s ease,transform .65s ease}
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.reveal.visible{opacity:1;transform:none}
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/* ─── SECTION HEADS with underline animation ── */
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.section-head{
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font-size:clamp(1.5rem,3vw,2rem);
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margin:0 0 .5rem;
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color:var(--accent);
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font-weight:700;
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display:inline-block;
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position:relative;
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}
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.section-head::after{
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content:'';
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position:absolute;
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bottom:-4px;left:0;
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height:2px;width:0;
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background:var(--accent);
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transition:width .5s ease;
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}
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.reveal.visible .section-head::after{width:100%}
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/* ─── SECTIONS ──────────────────────────────── */
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.section{padding:3.5rem 1.25rem;max-width:1200px;margin:0 auto}
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.section-sub{color:var(--muted);max-width:780px;margin:.5rem 0 2rem;font-size:.98rem}
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.alt-bg{background:linear-gradient(180deg,var(--accent-soft) 0%,transparent 100%)}
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/* ─── HERO ──────────────────────────────────── */
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.hero{position:relative;min-height:70vh;display:flex;align-items:center;justify-content:center;padding:5rem 1.25rem 4rem;text-align:center;overflow:hidden;background:var(--bg)}
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.hero-bg{position:absolute;inset:0;background:url('https://upload.wikimedia.org/wikipedia/commons/thumb/f/f4/Electrical_panel.jpg/640px-Electrical_panel.jpg') center/cover no-repeat;opacity:.05;pointer-events:none}
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.hero-inner{position:relative;z-index:2;max-width:900px;width:100%}
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.hero h1{font-size:clamp(2rem,5.5vw,3.2rem);margin:0 0 1rem;line-height:1.15;background:linear-gradient(135deg,#15803d,#16a34a 50%,#ca8a04);-webkit-background-clip:text;background-clip:text;color:transparent;font-weight:800}
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.hero-lead{font-size:1.1rem;color:#374151;max-width:640px;margin:0 auto 2.5rem}
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.stats{display:flex;flex-wrap:wrap;justify-content:center;gap:1rem;margin-top:1rem}
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.stat{background:#fff;border:2px solid var(--border);border-radius:16px;padding:1.1rem 1.5rem;min-width:160px;box-shadow:var(--glow);transition:transform .2s,border-color .2s,box-shadow .2s}
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.stat:hover{transform:translateY(-3px);border-color:var(--accent);box-shadow:0 8px 24px rgba(22,163,74,.12)}
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.stat b{display:block;font-family:'Outfit',sans-serif;font-size:1.6rem;color:var(--accent);font-weight:700;line-height:1.1}
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.stat span{font-size:.8rem;color:var(--muted);display:block;margin-top:.25rem}
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/* CSS scroll arrow */
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.hero-scroll{margin-top:3rem;display:flex;justify-content:center}
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.scroll-arrow{
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width:22px;height:22px;
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border-right:3px solid var(--muted);
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border-bottom:3px solid var(--muted);
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transform:rotate(45deg);
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animation:arrowBounce 1.5s ease-in-out infinite;
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border-radius:2px;
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}
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@keyframes arrowBounce{
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0%,100%{transform:rotate(45deg) translate(0,0);opacity:.5}
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50%{transform:rotate(45deg) translate(4px,4px);opacity:1}
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}
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/* ─── TEXT ──────────────────────────────────── */
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p{margin:.6rem 0}
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.intro-text{font-size:1.05rem;color:#374151;margin-bottom:1.5rem}
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/* ─── CARDS ─────────────────────────────────── */
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.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:1.25rem;transition:box-shadow .2s}
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.card:hover{box-shadow:0 8px 24px rgba(22,163,74,.12)}
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.card h3,.card h4{margin:0 0 .5rem;color:var(--text)}
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.card-title{font-size:1rem;font-weight:600;margin:0 0 .5rem}
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.card-body{font-size:.92rem;color:var(--muted)}
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.card-red{border-left:4px solid var(--danger)}
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.card-amber{border-left:4px solid var(--amber)}
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.card-green{border-left:4px solid var(--accent)}
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.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;align-items:start}
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.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem}
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.grid-5{display:grid;grid-template-columns:repeat(5,1fr);gap:1rem}
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@media(max-width:900px){.grid-2,.grid-3{grid-template-columns:1fr}}
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@media(max-width:1000px){.grid-5{grid-template-columns:repeat(2,1fr)}}
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@media(max-width:520px){.grid-5{grid-template-columns:1fr}}
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/* ─── IMAGES / PLACEHOLDERS ─────────────────── */
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img{max-width:100%;height:auto;display:block}
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.figure{margin:0 0 1rem}
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.figure img{border-radius:12px;border:2px solid var(--border);box-shadow:var(--glow)}
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.figcap{margin-top:.6rem;font-size:.85rem;color:var(--muted);text-align:center;font-style:italic}
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.img-placeholder{
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min-height:220px;background:var(--accent-soft);border:2px dashed #86efac;
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border-radius:12px;display:flex;flex-direction:column;align-items:center;
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justify-content:center;gap:.5rem;padding:1.5rem;text-align:center;
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}
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.ph-icon{font-size:2.5rem;line-height:1}
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.ph-title{color:var(--accent);font-weight:700;font-size:.9rem;margin:0;font-family:'Outfit',sans-serif}
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.ph-hint{color:var(--muted);font-size:.75rem;margin:0;max-width:540px}
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/* ─── VS SECTION ────────────────────────────── */
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.vs-wrap{display:grid;grid-template-columns:1fr auto 1fr;gap:1.5rem;align-items:center;margin:1.5rem 0 2rem}
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@media(max-width:900px){.vs-wrap{grid-template-columns:1fr;gap:1rem}}
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.vs-badge{
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width:56px;height:56px;border-radius:50%;
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background:linear-gradient(135deg,#16a34a,#ca8a04);
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color:#fff;font-family:'Outfit',sans-serif;font-weight:800;font-size:.9rem;
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display:flex;align-items:center;justify-content:center;flex-shrink:0;
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margin:0 auto;box-shadow:0 4px 16px rgba(22,163,74,.3);
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}
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.vs-card{background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:1.25rem;transition:box-shadow .2s}
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.vs-card:hover{box-shadow:0 8px 24px rgba(22,163,74,.12)}
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.vs-card.left{border-top:4px solid var(--amber)}
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.vs-card.right{border-top:4px solid var(--accent)}
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.vs-card h3{margin:0 0 1rem;font-size:1.1rem}
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.vs-list{list-style:none;padding:0;margin:0}
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.vs-list li{
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padding:.55rem 0 .55rem 1.6rem;position:relative;
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font-size:.92rem;color:#374151;
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border-bottom:1px solid var(--border-soft);
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transition:background .2s;border-radius:4px;
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cursor:default;
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}
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.vs-list li:last-child{border-bottom:none}
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.vs-list.amber li::before{content:'•';position:absolute;left:.3rem;top:.4rem;color:var(--amber);font-size:1.4rem;line-height:1;font-weight:700}
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.vs-list.green li::before{content:'•';position:absolute;left:.3rem;top:.4rem;color:var(--accent);font-size:1.4rem;line-height:1;font-weight:700}
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.vs-list.amber li:hover{background:rgba(202,138,4,.08)}
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.vs-list.green li:hover{background:rgba(22,163,74,.08)}
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/* ─── TABLES ────────────────────────────────── */
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table{width:100%;border-collapse:collapse;font-size:.9rem;margin:1rem 0;background:#fff;border-radius:12px;overflow:hidden;border:1px solid var(--border)}
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th,td{padding:.7rem .85rem;text-align:left;border-bottom:1px solid var(--border-soft);vertical-align:top}
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th{background:var(--accent-soft);font-family:'Outfit',sans-serif;font-size:.78rem;color:var(--accent-dark);font-weight:700;text-transform:uppercase;letter-spacing:.04em}
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tr:last-child td{border-bottom:none}
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tr:nth-child(even) td{background:#fafafa}
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td.mono,th.mono{font-family:'Share Tech Mono',monospace;font-size:.85rem}
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.table-title{font-family:'Outfit',sans-serif;font-weight:700;color:var(--text);margin:1.5rem 0 .5rem;font-size:1rem}
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/* ─── AB5 parts list ────────────────────────── */
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.ab5-grid{display:grid;grid-template-columns:1fr 1.4fr;gap:2rem;align-items:start}
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@media(max-width:900px){.ab5-grid{grid-template-columns:1fr}}
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.parts-list{list-style:none;padding:0;margin:0;counter-reset:part}
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.parts-list li{
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counter-increment:part;
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position:relative;
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padding:.8rem 1rem .8rem 3rem;
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margin-bottom:.6rem;
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background:#fff;
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border:1px solid var(--border);
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border-radius:10px;
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transition:background .2s,border-color .2s,transform .2s;
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font-size:.92rem;
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cursor:pointer;
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}
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.parts-list li::before{
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content:counter(part);
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position:absolute;left:.7rem;top:50%;transform:translateY(-50%);
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width:28px;height:28px;border-radius:50%;
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background:var(--accent);color:#fff;
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font-family:'Outfit',sans-serif;font-weight:700;font-size:.85rem;
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display:flex;align-items:center;justify-content:center;
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}
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.parts-list li:hover{background:var(--accent-soft);border-color:var(--accent);transform:translateX(4px)}
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.parts-list strong{color:var(--accent-dark)}
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.part-info{
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max-height:0;overflow:hidden;
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transition:max-height .3s ease,padding .3s ease;
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background:var(--accent-soft);
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border:1px solid var(--border);
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border-radius:0 0 10px 10px;
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margin-top:-8px;
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margin-bottom:.6rem;
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padding:0 1rem;
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font-size:.88rem;
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color:var(--accent-dark);
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}
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.part-info.open{max-height:200px;padding:.75rem 1rem}
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/* ─── TIMELINE ──────────────────────────────── */
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.timeline{position:relative;padding-left:2.5rem;margin:2rem 0}
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.timeline::before{content:'';position:absolute;left:12px;top:0;bottom:0;width:3px;background:linear-gradient(180deg,var(--accent),var(--accent-soft));border-radius:2px}
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.tl-step{
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position:relative;margin-bottom:1.25rem;
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padding:1rem 1.25rem;background:#fff;
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border:1px solid var(--border);border-radius:12px;
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opacity:0;transform:translateX(-30px);
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transition:opacity .4s ease,transform .4s ease;
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}
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.tl-step.tl-visible{opacity:1;transform:none}
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.tl-step::before{
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content:attr(data-n);
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position:absolute;left:-2.1rem;top:1rem;
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width:26px;height:26px;border-radius:50%;
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background:var(--accent);color:#fff;
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font-family:'Outfit',sans-serif;font-weight:700;font-size:.85rem;
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display:flex;align-items:center;justify-content:center;
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box-shadow:0 0 0 4px #fff;
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}
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.tl-step h4{margin:0 0 .35rem;color:var(--accent-dark);font-size:1rem}
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.tl-step p{margin:0;color:#374151;font-size:.92rem}
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/* ─── BOXES ─────────────────────────────────── */
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.warn-box{border:2px solid var(--danger);background:var(--danger-soft);border-radius:12px;padding:1rem 1.25rem;margin:1.25rem 0;color:#7f1d1d;font-weight:500}
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.warn-box strong{color:var(--danger)}
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.info-box{border-left:4px solid var(--accent);background:var(--accent-soft);border-radius:0 10px 10px 0;padding:1rem 1.25rem;margin:1.25rem 0;color:#064e3b}
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/* ─── GALVANIC ──────────────────────────────── */
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.galv{display:grid;grid-template-columns:1fr auto 1fr;gap:1.25rem;align-items:stretch;margin:1.5rem 0}
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@media(max-width:768px){.galv{grid-template-columns:1fr}}
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.galv-box{background:#fff;border-radius:14px;padding:1.25rem;text-align:center;display:flex;flex-direction:column;gap:.4rem}
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.galv-box.left{border:1px solid var(--border);border-left:4px solid var(--amber)}
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.galv-box.right{border:1px solid var(--border);border-left:4px solid var(--accent)}
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.galv-box h4{margin:0;font-size:1rem}
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.galv-box .big-val{font-family:'Outfit',sans-serif;font-weight:800;font-size:1.5rem;color:var(--text);margin:.25rem 0}
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.galv-box .sub{font-size:.85rem;color:var(--muted)}
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.galv-mid{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:0 .5rem}
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.galv-mid .sym{font-size:3rem;line-height:1;color:var(--accent)}
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.galv-mid .lbl{font-family:'Share Tech Mono',monospace;font-size:.8rem;color:var(--amber);margin-top:.25rem}
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/* Animated current flow dot */
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.flow-track{position:relative;height:18px;margin:.5rem 0;overflow:hidden;border-radius:4px;background:rgba(22,163,74,.08)}
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.flow-dot{
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position:absolute;top:50%;transform:translateY(-50%);
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width:10px;height:10px;border-radius:50%;
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animation:flowMove 2s linear infinite;
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}
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.flow-dot.green{background:var(--accent);box-shadow:0 0 6px var(--accent)}
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.flow-dot.amber{background:var(--amber);box-shadow:0 0 6px var(--amber)}
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@keyframes flowMove{from{left:-10px}to{left:100%}}
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/* ─── SIGNAL LIST ───────────────────────────── */
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.signal-list{list-style:none;padding:0;margin:1rem 0}
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.signal-list li{display:flex;align-items:flex-start;gap:.85rem;padding:.75rem 1rem;background:#fff;border:1px solid var(--border);border-radius:10px;margin-bottom:.5rem;font-size:.93rem}
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.signal-list .sig-name{font-family:'Share Tech Mono',monospace;color:var(--accent);font-weight:600}
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/* ─── SAFETY CARDS ──────────────────────────── */
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.safe-card{background:#fff;border:1px solid var(--danger);border-top:4px solid var(--danger);border-radius:12px;padding:1rem;text-align:center;box-shadow:0 2px 10px rgba(220,38,38,.08);transition:box-shadow .2s}
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.safe-card:hover{box-shadow:0 8px 24px rgba(220,38,38,.14)}
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.safe-card .num{font-family:'Outfit',sans-serif;font-weight:800;color:var(--danger);font-size:1.5rem;line-height:1}
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.safe-card h4{margin:.5rem 0 .35rem;font-size:.95rem;color:var(--text)}
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.safe-card p{font-size:.82rem;color:var(--muted);margin:0}
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/* ─── ACCORDION ─────────────────────────────── */
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.acc-item{border:1px solid var(--border);border-radius:10px;margin-bottom:.5rem;overflow:hidden;background:#fff}
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.acc-h{width:100%;text-align:left;padding:.85rem 1rem;background:var(--accent-soft);border:none;color:var(--text);font-family:'Outfit',sans-serif;font-size:.95rem;font-weight:600;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
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.acc-h:hover{background:#dcfce7}
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.acc-b{max-height:0;overflow:hidden;transition:max-height .4s ease;padding:0 1rem}
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.acc-b.open{max-height:400px;padding:.9rem 1rem 1.1rem}
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.acc-b p{font-size:.92rem;color:#374151;margin:.25rem 0}
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/* ─── QUIZ ──────────────────────────────────── */
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.quiz-progress-wrap{background:var(--border-soft);border-radius:999px;height:8px;margin-bottom:1.5rem;overflow:hidden}
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.quiz-progress-bar{height:8px;border-radius:999px;background:linear-gradient(90deg,var(--accent),#22c55e);width:0%;transition:width .4s ease}
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.quiz-q{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:1.25rem;margin-bottom:1rem}
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.quiz-q h4{margin:0 0 .75rem;font-size:1rem;color:var(--accent-dark)}
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.qopts{display:flex;flex-direction:column;gap:.5rem}
|
||
.qbtn{text-align:left;padding:.7rem .95rem;border-radius:10px;border:1px solid var(--border);background:#fafafa;color:var(--text);cursor:pointer;font-family:'Exo 2',sans-serif;font-size:.92rem;transition:.2s}
|
||
.qbtn:hover{border-color:var(--accent);background:var(--accent-soft)}
|
||
.qbtn.ok{border-color:var(--accent);background:rgba(22,163,74,.12);color:var(--accent-dark);font-weight:600}
|
||
.qbtn.bad{border-color:var(--danger);background:rgba(220,38,38,.1);color:#7f1d1d}
|
||
.qbtn:disabled{cursor:default}
|
||
.btn{display:inline-block;padding:.75rem 1.5rem;border-radius:999px;font-weight:600;font-family:'Outfit',sans-serif;font-size:.9rem;text-decoration:none;color:#fff;background:var(--accent);border:none;cursor:pointer;transition:transform .2s,background .2s}
|
||
.btn:hover{transform:translateY(-2px);background:var(--accent-dark)}
|
||
.btn.ghost{background:#9ca3af}
|
||
.btn.ghost:hover{background:#6b7280}
|
||
.score-panel{text-align:center;padding:2rem;margin-top:1.5rem;border-radius:16px;background:#fff;border:2px solid var(--border)}
|
||
|
||
/* ─── SUBTASK HEADERS ───────────────────────── */
|
||
.subtask{margin:2rem 0 1rem}
|
||
.subtask h3{margin:0 0 .35rem;color:var(--accent-dark);font-size:1.15rem;font-weight:700}
|
||
.subtask p.lead{color:var(--muted);margin:0;font-size:.94rem}
|
||
|
||
/* ─── FOOTER ────────────────────────────────── */
|
||
footer{padding:2rem 1.25rem 3rem;text-align:center;color:var(--muted);font-size:.85rem;border-top:1px solid var(--border);margin-top:2rem}
|
||
</style>
|
||
</head>
|
||
<body>
|
||
|
||
<nav>
|
||
<div class="nav-inner">
|
||
<div class="logo">Elektromagnetische Schalter</div>
|
||
<button type="button" id="menu-btn" aria-label="Menü">☰ Menü</button>
|
||
<ul class="nav-links" id="navm">
|
||
<li><a href="#hero">Start</a></li>
|
||
<li><a href="#ab1">Grundlagen</a></li>
|
||
<li><a href="#ab2">Relais & Schütz</a></li>
|
||
<li><a href="#ab4">Schaltzeichen</a></li>
|
||
<li><a href="#ab5">Aufbau</a></li>
|
||
<li><a href="#ab6">Funktion</a></li>
|
||
<li><a href="#ab7">Sicherheit</a></li>
|
||
<li><a href="#ab8">Praxis</a></li>
|
||
<li><a href="#quiz">Quiz</a></li>
|
||
</ul>
|
||
</div>
|
||
</nav>
|
||
|
||
<!-- HERO -->
|
||
<section id="hero" class="hero reveal">
|
||
<div class="hero-bg"></div>
|
||
<div class="hero-inner">
|
||
<h1>Elektromagnetische Schalter</h1>
|
||
<p class="hero-lead">Relais und Schütze in der Steuerungstechnik</p>
|
||
<div class="stats">
|
||
<div class="stat"><b>Relais & Schütz</b><span>Schalttypen</span></div>
|
||
<div class="stat"><b>Schütz</b><span>8 Bauteile</span></div>
|
||
</div>
|
||
<div class="hero-scroll" aria-hidden="true">
|
||
<div class="scroll-arrow"></div>
|
||
</div>
|
||
</div>
|
||
</section>
|
||
|
||
<!-- AB 1: Grundlagen -->
|
||
<section id="ab1" class="section reveal alt-bg">
|
||
<h2 class="section-head">Was sind elektromagnetische Schalter?</h2>
|
||
<p class="intro-text">Elektromagnetische Schalter werden in der Industrie überall dort eingesetzt, wo elektrische Stromkreise sicher und zuverlässig geschaltet werden müssen, zum Beispiel beim Starten von Motoren oder bei der Steuerung von Kränen.</p>
|
||
<p class="intro-text">Es gibt zwei Haupttypen: das <strong>Relais</strong> für kleinere Steuerströme und das <strong>Schütz</strong> für große Lastströme.</p>
|
||
|
||
<h3 class="table-title">Schützarten</h3>
|
||
<table>
|
||
<thead><tr><th>Schützart</th><th>Anwendungsgebiet</th></tr></thead>
|
||
<tbody>
|
||
<tr><td>Leistungsschütz</td><td>Schalten eines Motors</td></tr>
|
||
<tr><td>Hilfsschütz</td><td>Schalten einer Meldeleuchte</td></tr>
|
||
</tbody>
|
||
</table>
|
||
|
||
<h3 class="table-title">Typische Einsatzbereiche</h3>
|
||
<table>
|
||
<thead><tr><th>Gerät</th><th>Typischer Einsatz</th></tr></thead>
|
||
<tbody>
|
||
<tr><td>Relais</td><td>Schalten von kleineren Strömen (Melde- oder Regeltätigkeiten)</td></tr>
|
||
<tr><td>Schütz</td><td>Schalten von großen Lasten, z.B. Antriebsmotoren</td></tr>
|
||
</tbody>
|
||
</table>
|
||
</section>
|
||
|
||
<!-- AB 2: Relais vs Schütz -->
|
||
<section id="ab2" class="section reveal">
|
||
<h2 class="section-head">Relais & Schütz im Vergleich</h2>
|
||
|
||
<div class="vs-wrap">
|
||
<div class="vs-card left">
|
||
<figure class="figure" style="margin-bottom:1rem">
|
||
<img loading="lazy" src="relais.png" alt="Relais geöffnet — Spule und Kontakte sichtbar">
|
||
</figure>
|
||
<h3>Relais <span class="mono" style="color:var(--amber);font-size:.9rem">(K)</span></h3>
|
||
<ul class="vs-list amber">
|
||
<li>Für geringere Schaltleistungen ausgelegt</li>
|
||
<li>Meist für Gleichspannung</li>
|
||
<li>Schaltglieder sind einfach unterbrechend</li>
|
||
<li>Besitzen Klappanker</li>
|
||
<li>Bezeichnung: <strong>K</strong></li>
|
||
</ul>
|
||
</div>
|
||
|
||
<div class="vs-badge">VS</div>
|
||
|
||
<div class="vs-card right">
|
||
<figure class="figure" style="margin-bottom:1rem">
|
||
<img loading="lazy" src="schuetz.png" alt="Leistungsschütz">
|
||
</figure>
|
||
<h3>Schütz <span class="mono" style="color:var(--accent);font-size:.9rem">(Q)</span></h3>
|
||
<ul class="vs-list green">
|
||
<li>Für höhere Schaltleistungen ausgelegt</li>
|
||
<li>Schnelle / sichere Schaltvorgänge</li>
|
||
<li>Schaltglieder sind doppelt unterbrechend</li>
|
||
<li>Besitzen Zuganker</li>
|
||
<li>Bezeichnung: <strong>Q</strong></li>
|
||
</ul>
|
||
</div>
|
||
</div>
|
||
|
||
<h3 class="table-title">Vergleichstabelle</h3>
|
||
<table>
|
||
<thead>
|
||
<tr><th>Merkmal</th><th>Relais (K)</th><th>Schütz (Q)</th></tr>
|
||
</thead>
|
||
<tbody>
|
||
<tr><td>Schaltleistung</td><td>Gering</td><td>Hoch (Motoren)</td></tr>
|
||
<tr><td>Ankertyp</td><td>Klappanker</td><td>Zuganker</td></tr>
|
||
<tr><td>Kontaktunterbrechung</td><td>Einfach</td><td>Doppelt</td></tr>
|
||
<tr><td>Einsatz</td><td>Steuern, Melden, Regeln</td><td>Hauptstrom, Motoren</td></tr>
|
||
<tr><td>Bezeichnung</td><td class="mono">K</td><td class="mono">Q</td></tr>
|
||
</tbody>
|
||
</table>
|
||
|
||
<h3 class="table-title">Kontaktarten im Vergleich</h3>
|
||
<div class="grid-2">
|
||
<figure class="figure" style="text-align:center;background:#f8faff;border:1px solid var(--border);border-radius:12px;padding:1.25rem">
|
||
<img loading="lazy" src="federkontakt.png" alt="Federkontakt beim Relais" style="max-width:220px;width:100%;height:auto;margin:0 auto">
|
||
</figure>
|
||
<figure class="figure" style="text-align:center;background:#f8faff;border:1px solid var(--border);border-radius:12px;padding:1.25rem">
|
||
<img loading="lazy" src="schaltkontakt.png" alt="Schaltkontakt beim Schütz" style="max-width:220px;width:100%;height:auto;margin:0 auto">
|
||
</figure>
|
||
</div>
|
||
</section>
|
||
|
||
<!-- AB 4: Schaltzeichen -->
|
||
<section id="ab4" class="section reveal">
|
||
<h2 class="section-head">Schaltzeichen & Symbole</h2>
|
||
<figure class="figure" style="text-align:center;max-width:420px;margin:1rem auto">
|
||
<img loading="lazy" src="schaltzeichen-schuetz.png" alt="Schaltzeichen Leistungsschütz — 3 Hauptkontakte, Spule A1/A2, Hilfskontakt 13/14">
|
||
<figcaption class="figcap">Hauptkontakte 1/L1–6/T3, Spule A1/A2, Hilfskontakt 13/14</figcaption>
|
||
</figure>
|
||
</section>
|
||
|
||
<!-- AB 5: Aufbau -->
|
||
<section id="ab5" class="section reveal alt-bg">
|
||
<h2 class="section-head">Aufbau & Bestandteile eines Schützes</h2>
|
||
|
||
<div class="ab5-grid">
|
||
<div>
|
||
<figure class="figure">
|
||
<img loading="lazy"
|
||
src="schuetz-aufbau.jpg"
|
||
alt="Motorschütz geöffnet — Bestandteile sichtbar"
|
||
onerror="this.style.display='none'"
|
||
style="width:100%;max-width:320px;display:block;margin:0 auto;border-radius:12px;border:2px solid #86efac">
|
||
</figure>
|
||
</div>
|
||
|
||
<div>
|
||
<ol class="parts-list" id="parts-list">
|
||
<li data-key="oeffner"><strong>Öffner</strong></li>
|
||
<li data-key="schaltstuecke"><strong>Schaltstücke</strong></li>
|
||
<li data-key="schliesser"><strong>Schließer</strong></li>
|
||
<li data-key="spulenanschluss"><strong>Spulenanschluss</strong></li>
|
||
<li data-key="anker"><strong>Anker</strong></li>
|
||
<li data-key="kurzschlussring"><strong>Kurzschlussring</strong></li>
|
||
<li data-key="spule"><strong>Spule</strong></li>
|
||
<li data-key="eisenkern"><strong>Eisenkern</strong></li>
|
||
</ol>
|
||
</div>
|
||
</div>
|
||
|
||
<div class="grid-2">
|
||
<div class="card card-green">
|
||
<h3 class="card-title">Hauptstromkontakte</h3>
|
||
<ul class="vs-list green" style="margin-top:.5rem">
|
||
<li>Schalten die Außenleiter an den Verbraucher</li>
|
||
<li>Sind in getrennten Schaltkammern angeordnet</li>
|
||
<li>Bei größeren Leistungen mit Lichtbogenlöscheinrichtungen ausgestattet</li>
|
||
</ul>
|
||
</div>
|
||
<div class="card card-amber">
|
||
<h3 class="card-title">Steuerkontakte</h3>
|
||
<ul class="vs-list amber" style="margin-top:.5rem">
|
||
<li>Schalten Kontakte für Steuer- und Meldeaufgaben</li>
|
||
<li>Führen wesentlich weniger Leistung als Hauptstromkontakte</li>
|
||
</ul>
|
||
</div>
|
||
</div>
|
||
</section>
|
||
|
||
<!-- AB 6: Funktionsweise -->
|
||
<section id="ab6" class="section reveal">
|
||
<h2 class="section-head">Funktionsweise Schritt für Schritt</h2>
|
||
|
||
<div class="timeline">
|
||
<div class="tl-step" data-n="1" style="transition-delay:.0s">
|
||
<h4>Spannung anlegen</h4>
|
||
<p>Spannung wird an die beiden Spulenanschlüsse A1 und A2 angelegt.</p>
|
||
</div>
|
||
<div class="tl-step" data-n="2" style="transition-delay:.15s">
|
||
<h4>Magnetfeld entsteht</h4>
|
||
<p>Strom fließt durch die Schützspule, ein Magnetfeld entsteht.</p>
|
||
</div>
|
||
<div class="tl-step" data-n="3" style="transition-delay:.3s">
|
||
<h4>Anker wird angezogen</h4>
|
||
<p>Das Magnetfeld zieht den Anker an und betätigt die Schaltkontakte.</p>
|
||
</div>
|
||
<div class="tl-step" data-n="4" style="transition-delay:.45s">
|
||
<h4>Kontakte schalten</h4>
|
||
<p>Schließer schließen, Öffner öffnen. Der Verbraucher wird eingeschaltet.</p>
|
||
</div>
|
||
<div class="tl-step" data-n="5" style="transition-delay:.6s">
|
||
<h4>Schütz fällt ab</h4>
|
||
<p>Nach Abschalten der Spannungsversorgung drückt die Rückstellfeder den Anker zurück. Das Schütz fällt ab.</p>
|
||
</div>
|
||
</div>
|
||
|
||
<div class="warn-box">
|
||
<strong>Wichtig:</strong> Das Schütz ist kein Dauermagnet. Fällt die Steuerspannung aus, fällt das Schütz sofort ab.
|
||
</div>
|
||
|
||
<div class="subtask">
|
||
<h3>Galvanische Trennung</h3>
|
||
</div>
|
||
|
||
<div class="galv">
|
||
<div class="galv-box left">
|
||
<h4 style="color:var(--amber)">Steuerstromkreis</h4>
|
||
<div class="big-val">DC 24V</div>
|
||
<div class="sub">kleiner Steuerstrom, Taster / SPS</div>
|
||
<img loading="lazy"
|
||
src="taster.jpg"
|
||
alt="Taster Steuerstromkreis"
|
||
onerror="this.style.display='none'"
|
||
style="width:100%;border-radius:8px;margin-top:.5rem;border:1px solid var(--border)">
|
||
<div class="flow-track"><div class="flow-dot amber"></div></div>
|
||
</div>
|
||
|
||
<div class="galv-mid">
|
||
<span class="sym">⏚</span>
|
||
<span class="lbl">Q1 Schütz</span>
|
||
</div>
|
||
|
||
<div class="galv-box right">
|
||
<h4 style="color:var(--accent)">Hauptstromkreis</h4>
|
||
<div class="big-val">AC 230V</div>
|
||
<div class="sub">großer Laststrom, Motor / Last</div>
|
||
<svg viewBox="0 0 120 100" width="120" height="100" style="margin:.5rem auto;display:block" aria-label="Motor-Symbol">
|
||
<circle cx="60" cy="50" r="35" fill="none" stroke="#16a34a" stroke-width="3"/>
|
||
<text x="60" y="57" text-anchor="middle" fill="#15803d" font-family="Outfit,sans-serif" font-weight="700" font-size="22">M</text>
|
||
</svg>
|
||
<div class="flow-track"><div class="flow-dot green" style="animation-duration:1.4s"></div></div>
|
||
</div>
|
||
</div>
|
||
|
||
<div class="info-box">
|
||
Die <strong>Galvanische Trennung</strong> bedeutet, dass zwei Stromkreise zwar verbunden sind, aber nicht elektrisch. Das Übertragungsmedium ist der Elektromagnetismus.
|
||
</div>
|
||
</section>
|
||
|
||
<!-- AB 7: Sicherheit -->
|
||
<section id="ab7" class="section reveal alt-bg">
|
||
<h2 class="section-head">Sicherheitsregeln beim Schützaustausch</h2>
|
||
|
||
<div class="warn-box">
|
||
Vor dem Austausch müssen (je nach Spannungshöhe) die <strong>Fünf Sicherheitsregeln der Elektrotechnik</strong> beachtet werden!
|
||
</div>
|
||
|
||
<div class="grid-5">
|
||
<div class="safe-card">
|
||
<div class="num">1</div>
|
||
<h4>Freischalten</h4>
|
||
<p>Anlage spannungsfrei schalten</p>
|
||
</div>
|
||
<div class="safe-card">
|
||
<div class="num">2</div>
|
||
<h4>Gegen Wieder­einschalten sichern</h4>
|
||
<p>Hauptschalter abschließen</p>
|
||
</div>
|
||
<div class="safe-card">
|
||
<div class="num">3</div>
|
||
<h4>Spannungs­freiheit feststellen</h4>
|
||
<p>Mit Messgerät alle Leiter prüfen</p>
|
||
</div>
|
||
<div class="safe-card">
|
||
<div class="num">4</div>
|
||
<h4>Erden und kurz­schließen</h4>
|
||
<p>Bei Mittelspannung und höher</p>
|
||
</div>
|
||
<div class="safe-card">
|
||
<div class="num">5</div>
|
||
<h4>Benachbarte Teile abdecken</h4>
|
||
<p>Schutz vor Nachbarspannungen</p>
|
||
</div>
|
||
</div>
|
||
</section>
|
||
|
||
<!-- AB 8: Praxis -->
|
||
<section id="ab8" class="section reveal alt-bg">
|
||
<h2 class="section-head">Praxisbeispiel: Hebekran</h2>
|
||
|
||
<div style="display:grid;grid-template-columns:1fr 1fr;gap:2rem;align-items:center;margin-bottom:2rem">
|
||
<figure class="figure" style="margin:0">
|
||
<img loading="lazy"
|
||
src="hebekran.jpg"
|
||
alt="Industrieller Portalkran"
|
||
onerror="this.style.display='none'"
|
||
style="border-radius:14px;border:2px solid var(--border);width:100%">
|
||
</figure>
|
||
<div>
|
||
<p style="font-size:1.05rem;color:#374151;margin:0 0 1.25rem">Ein Hebekran wird über Schütze gesteuert. Die Betriebsmittel bilden zusammen die Steuerung des Antriebsmotors.</p>
|
||
<div style="display:flex;flex-direction:column;gap:.6rem">
|
||
<div style="display:flex;align-items:center;gap:.85rem;background:#fff;border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:10px;padding:.75rem 1rem">
|
||
<span style="font-family:'Share Tech Mono',monospace;font-weight:700;color:var(--accent);font-size:1rem;min-width:2.5rem">Q1</span>
|
||
<span style="font-size:.93rem;color:var(--text)">Hauptschalter</span>
|
||
</div>
|
||
<div style="display:flex;align-items:center;gap:.85rem;background:#fff;border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:10px;padding:.75rem 1rem">
|
||
<span style="font-family:'Share Tech Mono',monospace;font-weight:700;color:var(--accent);font-size:1rem;min-width:2.5rem">S1</span>
|
||
<span style="font-size:.93rem;color:var(--text)">Schlüsselschalter</span>
|
||
</div>
|
||
<div style="display:flex;align-items:center;gap:.85rem;background:#fff;border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:10px;padding:.75rem 1rem">
|
||
<span style="font-family:'Share Tech Mono',monospace;font-weight:700;color:var(--accent);font-size:1rem;min-width:2.5rem">S2</span>
|
||
<span style="font-size:.93rem;color:var(--text)">Taster AUF</span>
|
||
</div>
|
||
<div style="display:flex;align-items:center;gap:.85rem;background:#fff;border:1px solid var(--border);border-left:4px solid var(--accent);border-radius:10px;padding:.75rem 1rem">
|
||
<span style="font-family:'Share Tech Mono',monospace;font-weight:700;color:var(--accent);font-size:1rem;min-width:2.5rem">S3</span>
|
||
<span style="font-size:.93rem;color:var(--text)">Taster AB</span>
|
||
</div>
|
||
<div style="display:flex;align-items:center;gap:.85rem;background:#fff;border:2px solid var(--danger);border-left:4px solid var(--danger);border-radius:10px;padding:.75rem 1rem">
|
||
<span style="font-family:'Share Tech Mono',monospace;font-weight:700;color:var(--danger);font-size:1rem;min-width:2.5rem">S0</span>
|
||
<span style="font-size:.93rem;color:var(--text);font-weight:600">NOT-HALT</span>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
|
||
<div style="display:grid;grid-template-columns:1fr 1fr 1fr;gap:1rem;margin-top:.5rem">
|
||
<div style="background:#fff;border:1px solid var(--border);border-top:3px solid var(--accent);border-radius:12px;padding:1.1rem;text-align:center">
|
||
<div style="font-family:'Outfit',sans-serif;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:.4rem">Steuerspannung</div>
|
||
<div style="font-family:'Outfit',sans-serif;font-weight:800;font-size:1.4rem;color:var(--accent)">DC 24V</div>
|
||
</div>
|
||
<div style="background:#fff;border:1px solid var(--border);border-top:3px solid var(--amber);border-radius:12px;padding:1.1rem;text-align:center">
|
||
<div style="font-family:'Outfit',sans-serif;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:.4rem">Gebrauchskategorie</div>
|
||
<div style="font-family:'Outfit',sans-serif;font-weight:800;font-size:1.4rem;color:var(--amber)">AC-4</div>
|
||
</div>
|
||
<div style="background:#fff;border:1px solid var(--border);border-top:3px solid var(--accent);border-radius:12px;padding:1.1rem;text-align:center">
|
||
<div style="font-family:'Outfit',sans-serif;font-size:.7rem;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:.4rem">Betrieb</div>
|
||
<div style="font-family:'Outfit',sans-serif;font-weight:800;font-size:1.4rem;color:var(--accent)">Tippbetrieb</div>
|
||
</div>
|
||
</div>
|
||
|
||
<style>
|
||
@media(max-width:900px){#ab8 .praxis-grid{grid-template-columns:1fr !important}}
|
||
@media(max-width:900px){#ab8 .praxis-stats{grid-template-columns:1fr 1fr !important}}
|
||
@media(max-width:520px){#ab8 .praxis-stats{grid-template-columns:1fr !important}}
|
||
</style>
|
||
</section>
|
||
|
||
<!-- QUIZ -->
|
||
<section id="quiz" class="section reveal alt-bg">
|
||
<h2 class="section-head">Wissens-Check</h2>
|
||
<div class="quiz-progress-wrap"><div class="quiz-progress-bar" id="quiz-progress"></div></div>
|
||
<div id="quiz-box"></div>
|
||
<div style="text-align:center;margin-top:1.5rem;display:flex;flex-wrap:wrap;gap:.75rem;justify-content:center">
|
||
<button type="button" class="btn" onclick="auswerten()">Auswerten</button>
|
||
<button type="button" class="btn ghost" onclick="resetQuiz()">Quiz zurücksetzen</button>
|
||
</div>
|
||
<div id="score-panel" class="score-panel" style="display:none"></div>
|
||
</section>
|
||
|
||
<footer>
|
||
<p>Elektromagnetische Schalter · Steuerungstechnik</p>
|
||
</footer>
|
||
|
||
<script>
|
||
'use strict';
|
||
|
||
/* ─── QUIZ ─────────────────────────────────────────── */
|
||
const quizData = [
|
||
{q:'Was ist der Hauptunterschied zwischen Relais und Schütz?',
|
||
o:['Relais nur für AC','Schütz hat Klappanker','Schütz doppelt unterbrechend, Relais einfach unterbrechend','Relais für höhere Leistungen'], c:2},
|
||
{q:'Wofür stehen die Klemmen A1/A2 am Schütz?',
|
||
o:['Hauptstromphasen','Spulenanschlüsse','Hilfskontakt NO','Motorschutz'], c:1},
|
||
{q:'Was passiert wenn die Spulenspannung abgeschaltet wird?',
|
||
o:['Die Rückstellfeder drückt den Anker zurück, Schütz fällt ab','Schütz bleibt angezogen (Remanenz)','Kontakte bleiben in Stellung','Sicherung löst aus'], c:0},
|
||
{q:'Für welchen Betrieb ist Gebrauchskategorie AC-3 geeignet?',
|
||
o:['Dauertippbetrieb','Käfigläufermotor anlassen und ausschalten','Gleichstrom-Reihenschlussmotoren','Gegenstrombremsung'], c:1},
|
||
{q:'Was versteht man unter Galvanischer Trennung?',
|
||
o:['Direkte elektrische Verbindung zweier Kreise','Zwei Kreise sind über Elektromagnetismus verbunden, aber nicht elektrisch','Spannungsfreiheit','Kurzschlussschutz'], c:1},
|
||
{q:'Welche Bezeichnung hat ein Hilfsschütz?',
|
||
o:['K (z.B. K1)','Q','M','S'], c:0},
|
||
{q:'Warum kann ein Schütz mit AC-3 nicht für Tippbetrieb verwendet werden?',
|
||
o:['Falsche Spulenspannung','Zu wenig Kontakte','AC-3 ist nur für normales An/Aus schalten, nicht für dauernden Tippbetrieb','Falscher Ankertyp'], c:2}
|
||
];
|
||
|
||
let quizState = [];
|
||
|
||
function updateProgress() {
|
||
const answered = quizState.filter(s => s.answered).length;
|
||
const pct = (answered / quizData.length) * 100;
|
||
document.getElementById('quiz-progress').style.width = pct + '%';
|
||
}
|
||
|
||
function buildQuiz() {
|
||
const box = document.getElementById('quiz-box');
|
||
box.innerHTML = '';
|
||
quizState = quizData.map(() => ({ answered:false, correct:null }));
|
||
updateProgress();
|
||
quizData.forEach((d, i) => {
|
||
const wrap = document.createElement('div');
|
||
wrap.className = 'quiz-q reveal';
|
||
wrap.innerHTML = '<h4>Frage ' + (i+1) + ': ' + d.q + '</h4><div class="qopts" id="opts-' + i + '"></div>';
|
||
box.appendChild(wrap);
|
||
const opts = wrap.querySelector('#opts-' + i);
|
||
d.o.forEach((text, oi) => {
|
||
const b = document.createElement('button');
|
||
b.type = 'button';
|
||
b.className = 'qbtn';
|
||
b.textContent = text;
|
||
b.onclick = () => answer(i, oi, d.c);
|
||
opts.appendChild(b);
|
||
});
|
||
});
|
||
observeReveal();
|
||
}
|
||
|
||
function answer(qIdx, choice, correctIdx) {
|
||
if (quizState[qIdx].answered) return;
|
||
quizState[qIdx].answered = true;
|
||
quizState[qIdx].correct = choice === correctIdx;
|
||
updateProgress();
|
||
const wrap = document.getElementById('opts-' + qIdx);
|
||
wrap.querySelectorAll('.qbtn').forEach((btn, idx) => {
|
||
btn.disabled = true;
|
||
if (idx === correctIdx) btn.classList.add('ok');
|
||
else if (idx === choice) btn.classList.add('bad');
|
||
});
|
||
}
|
||
|
||
function auswerten() {
|
||
let n = 0;
|
||
quizState.forEach(s => { if (s.correct) n++; });
|
||
const pct = Math.round(n / quizData.length * 100);
|
||
let note = 'ungenügend', emoji = '📕';
|
||
if (pct >= 88) { note = 'sehr gut'; emoji = '🏆'; }
|
||
else if (pct >= 75) { note = 'gut'; emoji = '🌟'; }
|
||
else if (pct >= 63) { note = 'befriedigend'; emoji = '👍'; }
|
||
else if (pct >= 50) { note = 'ausreichend'; emoji = '📗'; }
|
||
const p = document.getElementById('score-panel');
|
||
p.style.display = 'block';
|
||
p.innerHTML = '<div style="font-size:3rem">' + emoji + '</div>' +
|
||
'<h3 style="margin:.5rem 0;color:var(--accent)">' + n + ' / ' + quizData.length + ' richtig</h3>' +
|
||
'<p style="color:var(--muted)">Note: <strong style="color:var(--amber)">' + note + '</strong> (' + pct + '%)</p>';
|
||
p.scrollIntoView({ behavior:'smooth', block:'nearest' });
|
||
}
|
||
|
||
function resetQuiz() {
|
||
document.getElementById('score-panel').style.display = 'none';
|
||
document.getElementById('score-panel').innerHTML = '';
|
||
buildQuiz();
|
||
}
|
||
|
||
function toggleAcc(btn) {
|
||
const it = btn.parentElement;
|
||
const body = it.querySelector('.acc-b');
|
||
const wasOpen = body.classList.contains('open');
|
||
document.querySelectorAll('.acc-b').forEach(b => { b.classList.remove('open'); b.style.maxHeight = ''; });
|
||
document.querySelectorAll('.acc-h span').forEach(s => { s.textContent = '+'; });
|
||
if (!wasOpen) {
|
||
body.classList.add('open');
|
||
body.style.maxHeight = '400px';
|
||
btn.querySelector('span').textContent = '−';
|
||
}
|
||
}
|
||
|
||
/* ─── REVEAL ────────────────────────────────────────── */
|
||
let revealObs = null;
|
||
function observeReveal() {
|
||
if (!revealObs) {
|
||
revealObs = new IntersectionObserver(ents => {
|
||
ents.forEach(e => { if (e.isIntersecting) e.target.classList.add('visible'); });
|
||
}, { threshold:0.08 });
|
||
}
|
||
document.querySelectorAll('.reveal').forEach(el => {
|
||
if (el.dataset.obs) return;
|
||
el.dataset.obs = '1';
|
||
revealObs.observe(el);
|
||
});
|
||
}
|
||
|
||
/* ─── TIMELINE: animate steps on scroll ─────────────── */
|
||
const tlObs = new IntersectionObserver(entries => {
|
||
entries.forEach(e => {
|
||
if (e.isIntersecting) {
|
||
const steps = e.target.querySelectorAll('.tl-step');
|
||
steps.forEach(s => s.classList.add('tl-visible'));
|
||
tlObs.unobserve(e.target);
|
||
}
|
||
});
|
||
}, { threshold: 0.2 });
|
||
document.querySelectorAll('.timeline').forEach(t => tlObs.observe(t));
|
||
|
||
|
||
/* ─── MENU ──────────────────────────────────────────── */
|
||
document.getElementById('menu-btn').addEventListener('click', function() {
|
||
document.getElementById('navm').classList.toggle('open');
|
||
});
|
||
|
||
/* ─── PROGRESS BAR ──────────────────────────────────── */
|
||
(function() {
|
||
const nav = document.querySelector('nav');
|
||
const bar = document.createElement('div');
|
||
bar.style.cssText = 'position:absolute;bottom:0;left:0;height:3px;width:0%;background:linear-gradient(90deg,#16a34a,#ca8a04);transition:width .1s ease;z-index:10';
|
||
nav.appendChild(bar);
|
||
window.addEventListener('scroll', () => {
|
||
const h = document.documentElement.scrollHeight - window.innerHeight;
|
||
bar.style.width = (h <= 0 ? 0 : Math.min((window.scrollY / h) * 100, 100)) + '%';
|
||
}, { passive:true });
|
||
})();
|
||
|
||
/* ─── IMG ERROR HANDLER ─────────────────────────────── */
|
||
document.querySelectorAll('img').forEach(img => {
|
||
img.addEventListener('error', function() {
|
||
if (this.dataset.err) return;
|
||
this.dataset.err = '1';
|
||
if (this.style.display === 'none') return;
|
||
const ph = document.createElement('div');
|
||
ph.className = 'img-placeholder';
|
||
ph.innerHTML = '<span class="ph-icon">📷</span>' +
|
||
'<p class="ph-title">' + (this.alt || 'Foto') + '</p>' +
|
||
'<p class="ph-hint">Bild konnte nicht geladen werden</p>';
|
||
this.parentNode.insertBefore(ph, this);
|
||
this.style.display = 'none';
|
||
});
|
||
});
|
||
|
||
buildQuiz();
|
||
observeReveal();
|
||
</script>
|
||
|
||
</body>
|
||
</html>
|