.sg-signal-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.sg-signal-card{min-width:0;padding:26px;border:1px solid var(--line);border-radius:20px;background:var(--el-panel)}
.sg-signal-card h2{margin:8px 0 8px;font:600 clamp(22px,2.3vw,31px) var(--display)}
.sg-signal-card>p{min-height:76px;color:var(--muted);font-size:13px;line-height:1.65}
.sg-signal-card>strong{display:block;margin-top:15px;color:#a76700;font-size:13px}
.sg-diagram-frame{position:relative;margin:18px 0 20px;border:1px solid #2b465a;border-radius:16px;background:#071522;overflow:hidden}
.sg-diagram-frame canvas,.sg-canvas-host canvas,.sg-symbol-canvas{display:block;width:100%;max-width:100%}
.sg-signal-note{display:grid;grid-template-columns:auto 1fr;gap:12px;align-items:start;margin-top:14px;padding:13px 14px;border-radius:12px;background:rgba(118,215,221,.08);color:var(--muted);font-size:11px;line-height:1.5}
.sg-signal-note b{color:var(--el-cyan);font-size:10px;letter-spacing:.11em}
.sg-canvas-host{position:relative!important;display:block!important;min-height:0!important;padding:0!important;background:#071522!important;overflow:hidden}
.sg-canvas-host:before,.sg-canvas-host:after{display:none!important}
.sg-canvas-label{position:absolute;z-index:2;left:18px;top:15px;color:#8ca2af;font-size:9px;font-weight:700;letter-spacing:.14em;pointer-events:none}
.sg-canvas-host canvas{position:relative;z-index:1}
.symbol-wrap.sg-symbol-wrap{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;align-items:center;padding:9px 12px}
.sg-symbol-wrap canvas{height:70px}
.sg-symbol-wrap>small{white-space:nowrap}
.symbol-wrap.sg-switch-wrap{display:block;padding:13px}
.sg-switch-symbols{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.sg-switch-item{min-width:0;padding:10px 8px 9px;border:1px solid rgba(123,150,168,.28);border-radius:10px;text-align:center;background:rgba(7,21,34,.28)}
.sg-switch-item canvas{display:block;width:100%;height:58px}
.sg-switch-item strong,.sg-switch-item small{display:block}
.sg-switch-item strong{margin-top:3px;color:var(--text);font:600 12px var(--display)}
.sg-switch-item small{margin-top:3px;color:var(--muted);font-size:10px;line-height:1.35;letter-spacing:0;text-transform:none}
html[data-theme=dark] .sg-switch-item{background:#071522}
.sg-protection-intro{max-width:760px;margin-bottom:28px;color:var(--muted);line-height:1.7}
.sg-five-rules{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;counter-reset:safety-rule}
.sg-five-rules article{position:relative;min-width:0;padding:22px 18px;border:1px solid var(--line);border-radius:17px;background:var(--el-panel);counter-increment:safety-rule}
.sg-five-rules article:before{content:counter(safety-rule);display:grid;width:34px;height:34px;margin-bottom:18px;place-items:center;border-radius:50%;background:var(--el-amber);color:#071522;font:700 14px var(--display)}
.sg-five-rules h3{margin:0 0 10px;font:600 17px var(--display);line-height:1.2}
.sg-five-rules p{margin:0;color:var(--muted);font-size:11px;line-height:1.6}
.sg-rule-order{margin-top:20px;padding:16px 18px;border-left:3px solid var(--el-amber);background:rgba(255,181,70,.08);color:var(--muted);font-size:12px;line-height:1.6}
.sg-rule-order strong{color:var(--text)}
html[data-theme=dark] .sg-signal-card,html[data-theme=dark] .sg-five-rules article{border-color:#2c4559}
.sg-flow-choice{display:grid;grid-template-columns:auto minmax(0,1fr);gap:16px;align-items:center;margin:14px 0 18px;padding:14px 16px;border:1px solid var(--line);border-radius:16px;background:var(--el-panel)}
.sg-flow-choice>span{color:var(--muted);font-size:11px;font-weight:700;letter-spacing:.07em;text-transform:uppercase}
.sg-flow-choice>div{display:grid;grid-template-columns:1fr 1fr;gap:7px}
.sg-flow-choice button{min-height:42px;padding:8px 12px;border:1px solid var(--line);border-radius:12px;background:transparent;color:var(--muted);font:600 12px var(--display);cursor:pointer}
.sg-flow-choice button.active{border-color:var(--el-cyan);background:var(--el-cyan);color:#071522}
.diagram-legend [data-flow-legend]{font-weight:600;color:inherit}
.sg-flow-explanation{display:grid;grid-template-columns:190px 1fr;gap:18px;align-items:start;margin:-8px 0 26px;padding:17px 19px;border-left:3px solid var(--el-amber);background:rgba(255,181,70,.08)}
.sg-flow-explanation b{color:var(--text);font:600 14px var(--display)}
.sg-flow-explanation span{color:var(--muted);font-size:12px;line-height:1.65}
html[data-theme=dark] .sg-flow-choice{border-color:#2c4559}
@media(max-width:980px){.sg-signal-grid{grid-template-columns:1fr 1fr}.sg-signal-card:last-child{grid-column:1/-1}.sg-five-rules{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:700px){.sg-signal-grid{grid-template-columns:1fr}.sg-signal-card:last-child{grid-column:auto}.sg-signal-card{padding:20px}.sg-signal-card>p{min-height:0}.sg-five-rules{grid-template-columns:1fr}.symbol-wrap.sg-symbol-wrap{grid-template-columns:1fr}.sg-symbol-wrap>small{padding-left:3px}.sg-canvas-label{left:13px;top:12px;font-size:8px}.sg-flow-choice{grid-template-columns:1fr}.sg-flow-choice>div{grid-template-columns:1fr}.sg-flow-explanation{grid-template-columns:1fr;gap:8px}}
@media(max-width:390px){.sg-switch-symbols{grid-template-columns:1fr}.sg-switch-item canvas{height:54px}}

/* Klingelschaltung: Direktschaltung und Impulssteuerung */
.sg-doorbell-demo{min-height:520px;padding-top:150px}
.sg-doorbell-modes{position:absolute;z-index:5;top:28px;left:28px;right:28px;display:grid;grid-template-columns:1fr 1fr;gap:8px;padding:5px;border:1px solid #2b465a;border-radius:999px;background:#091a29}
.sg-doorbell-modes button{min-height:42px;border:0;border-radius:999px;background:transparent;color:#a8bac4;font:600 13px var(--display);cursor:pointer}
.sg-doorbell-modes button.active{background:var(--el-cyan);color:#071522}
.sg-doorbell-explanation{position:absolute;z-index:3;top:94px;left:40px;right:40px;margin:0;color:#a8bac4;font-size:13px;line-height:1.55;text-align:center}
.sg-doorbell-explanation b{color:#fff}
.sg-doorbell-demo .doorbell-path{top:63%}
.sg-doorbell-demo .doorbell-node{top:calc(63% - 58px)}
.sg-doorbell-demo .ring-button{top:63%;transition:left .25s ease,transform .15s ease}
.sg-doorbell-demo .doorbell-node.controller{left:54%;width:132px;opacity:0;visibility:hidden;transform:translateX(-50%) scale(.92);transition:opacity .2s ease,transform .2s ease,visibility .2s}
.sg-doorbell-demo .doorbell-node.controller small{max-width:88px;margin-inline:auto;line-height:1.25}
.sg-doorbell-demo[data-mode=impulse] .ring-button{left:34%;width:104px;height:104px}
.sg-doorbell-demo[data-mode=impulse] .doorbell-node.controller{opacity:1;visibility:visible;transform:translateX(-50%) scale(1)}
.sg-doorbell-demo[data-mode=impulse] .doorbell-node.bell{right:4%}
.sg-doorbell-schematic-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.sg-doorbell-schematic-card{min-width:0;padding:24px;border:1px solid var(--line);border-radius:22px;background:var(--el-panel)}
.sg-doorbell-schematic-card h3{margin:8px 0 8px;font:600 23px var(--display)}
.sg-doorbell-schematic-card>p{min-height:66px;margin:0 0 18px;color:var(--muted);font-size:12px;line-height:1.6}
.sg-doorbell-schematic-card .schematic-board{margin-bottom:18px}
.sg-doorbell-schematic-card .formula-strip{grid-template-columns:1fr;margin-bottom:0}
.sg-doorbell-parts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.sg-doorbell-parts article{position:relative;min-width:0;padding:24px;border:1px solid var(--line);border-radius:18px;background:var(--el-panel)}
.sg-doorbell-parts article>span{display:grid;width:34px;height:34px;margin-bottom:17px;place-items:center;border-radius:50%;background:rgba(118,215,221,.16);color:var(--el-cyan);font:700 11px var(--display)}
.sg-doorbell-parts h3{margin:0 0 9px;font:600 18px var(--display)}
.sg-doorbell-parts p{margin:0;color:var(--muted);font-size:12px;line-height:1.6}
.sg-doorbell-safety{margin:20px 0 0;padding:17px 19px;border-left:3px solid var(--el-amber);background:rgba(255,181,70,.08);color:var(--muted);font-size:12px;line-height:1.6}
.sg-doorbell-safety strong{color:var(--text)}
html[data-theme=dark] .sg-doorbell-schematic-card,html[data-theme=dark] .sg-doorbell-parts article{border-color:#2c4559}
@media(max-width:980px){.sg-doorbell-schematic-grid{grid-template-columns:1fr}.sg-doorbell-schematic-card>p{min-height:0}.sg-doorbell-parts{grid-template-columns:1fr 1fr}}
@media(max-width:700px){
  .sg-doorbell-demo{min-height:650px;padding:0 20px}
  .sg-doorbell-modes{top:22px;left:18px;right:18px}
  .sg-doorbell-explanation{top:92px;left:24px;right:24px;text-align:left}
  .sg-doorbell-demo .doorbell-path{left:50%;right:auto;top:250px;width:3px;height:315px;transform:translateX(-50%)}
  .sg-doorbell-demo .doorbell-path:before{inset:0;width:3px;height:0;transition:height .25s}
  .sg-doorbell-demo.is-ringing .doorbell-path:before{width:3px;height:100%}
  .sg-doorbell-demo .doorbell-node{left:50%;right:auto;width:98px;height:98px;transform:translateX(-50%)}
  .sg-doorbell-demo .doorbell-node.source{top:195px}
  .sg-doorbell-demo .doorbell-node.bell{top:445px;right:auto}
  .sg-doorbell-demo .ring-button{left:50%;top:370px;width:104px;height:104px}
  .sg-doorbell-demo .ring-button:active{transform:translate(-50%,-50%) scale(.96)}
  .sg-doorbell-demo[data-mode=impulse]{min-height:790px}
  .sg-doorbell-demo[data-mode=impulse] .doorbell-path{height:450px}
  .sg-doorbell-demo[data-mode=impulse] .ring-button{left:50%;top:350px}
  .sg-doorbell-demo[data-mode=impulse] .doorbell-node.controller{left:50%;top:445px;width:116px;transform:translateX(-50%) scale(1)}
  .sg-doorbell-demo[data-mode=impulse] .doorbell-node.bell{left:50%;right:auto;top:585px}
  .sg-doorbell-parts{grid-template-columns:1fr}
  .sg-doorbell-schematic-card{padding:18px}
}