.logic-modes{display:flex;gap:6px;margin:14px 0 10px;padding:4px;border:1px solid var(--line);border-radius:10px;background:#f5f7f2;width:max-content}.logic-mode{border:0;border-radius:7px;padding:8px 12px;background:transparent;color:var(--muted);cursor:pointer;font-size:11px;font-weight:850}.logic-mode.active,.logic-mode[aria-selected="true"]{background:white;color:var(--green-dark);box-shadow:0 1px 4px #17231d18}.ladder-intro{display:flex;flex-direction:column;gap:4px;margin:10px 0 12px;padding:11px 13px;border-left:3px solid var(--green);border-radius:6px;background:#f2f5ef}.ladder-intro strong{font-size:12px}.ladder-intro span{color:#536158;font-size:11px;line-height:1.45}#ladder-board{display:grid;gap:9px;overflow-x:auto}.ladder-rung{padding:12px;border:1px solid var(--line);border-radius:11px;background:#fffefa}.ladder-rung-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:6px}.ladder-rung-head strong{font:800 11px ui-monospace,"Cascadia Code",Consolas,monospace;color:var(--green-dark)}.ladder-coil-state{padding:3px 7px;border-radius:99px;background:#eef1ec;color:var(--muted);font-size:9px;font-weight:850}.ladder-coil-state.on{background:var(--green-pale);color:var(--green-dark)}.ladder-wire{display:flex;align-items:stretch;min-width:max-content;padding:5px 0}.ladder-rail{width:3px;min-height:60px;align-self:center;border-radius:3px;background:#708575}.ladder-logic{display:flex;align-items:stretch}.ladder-section{display:flex;flex-direction:column;justify-content:center;min-width:176px;border-right:2px solid #b8c5b8;padding:2px 0}.ladder-branch{display:flex;align-items:center;gap:5px;min-height:54px;border-top:2px solid #c5d0c3;padding:4px 7px}.ladder-branch:first-child{border-top:0}.ladder-contact{display:flex;align-items:center;gap:4px;padding:4px;border:1px solid #d8e0d6;border-radius:7px;background:white}.ladder-tag-select,.ladder-kind-select{max-width:115px;border:1px solid #d5ded2;border-radius:5px;padding:5px;background:#fff;color:var(--ink);font-size:9px}.ladder-tag-select{width:100px}.ladder-kind-select{width:92px}.ladder-symbol{min-width:33px;padding:2px 3px;border-top:2px solid #607563;border-bottom:2px solid #607563;color:#607563;text-align:center;font:800 12px ui-monospace,Consolas,monospace}.ladder-contact.conducting .ladder-symbol{border-color:#168248;color:#0c7c3b;background:#e4f4e8}.ladder-contact:not(.conducting) .ladder-symbol{color:#8c6c58}.ladder-remove{border:0;background:transparent;color:#8c6c58;cursor:pointer;font-size:15px;line-height:1}.ladder-add-contact,.ladder-add-branch,.ladder-add-section{border:1px dashed #b7c6b5;border-radius:6px;padding:6px 8px;background:#f7f9f5;color:var(--green-dark);cursor:pointer;font-size:9px;font-weight:800;white-space:nowrap}.ladder-add-contact:hover,.ladder-add-branch:hover,.ladder-add-section:hover{border-color:var(--green);background:var(--green-pale)}.ladder-branch-add{align-self:center;margin:4px 7px}.ladder-coil{display:flex;align-items:center;gap:7px;padding:0 12px;border-top:2px solid #c5d0c3;border-bottom:2px solid #c5d0c3;background:#f8faf6}.ladder-coil-symbol{color:#6d7f70;font:850 14px ui-monospace,Consolas,monospace}.ladder-coil strong{font:800 10px ui-monospace,"Cascadia Code",Consolas,monospace}.ladder-rung-actions{display:flex;align-items:center;gap:8px;margin-top:7px}.ladder-rung-actions small{color:var(--muted);font-size:9px}.ladder-code-preview{margin-top:12px;padding:11px;border-radius:9px;background:#f2f5ef}.ladder-code-preview strong{font-size:10px}.ladder-code-preview pre{overflow:auto;margin:6px 0 0;color:#365342;font:10px/1.5 ui-monospace,"Cascadia Code",Consolas,monospace;white-space:pre-wrap;word-break:break-word}.text-logic-panel .editor-heading{margin-top:8px}.logic-mode:focus-visible,.ladder-rung button:focus-visible,.ladder-rung select:focus-visible{outline:2px solid var(--green);outline-offset:2px}
.ladder-preview-head{display:flex;align-items:center;justify-content:space-between;gap:8px}
.ladder-branch-controls{display:flex;align-items:center;gap:7px;margin:4px 7px}.ladder-remove-section{border:0;background:transparent;color:#8c6c58;cursor:pointer;font-size:9px;text-decoration:underline;text-underline-offset:2px;white-space:nowrap}

.troubleshooting-panel{padding:20px;border:1px solid var(--line);border-radius:18px;background:var(--card);box-shadow:var(--shadow)}.trouble-toolbar{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:14px}.trouble-toolbar h2{margin:0;font-size:clamp(24px,3vw,34px);letter-spacing:-.035em}.trouble-toolbar .hero-copy{margin-top:7px}.trouble-progress{min-width:180px;padding:12px;border:1px solid var(--line);border-radius:11px;background:#fffefa}.trouble-progress strong{font-size:11px}.trouble-progress-track{height:8px;overflow:hidden;margin-top:7px;border-radius:99px;background:#e5e9e3}.trouble-progress-track span{display:block;width:0;height:100%;border-radius:inherit;background:var(--green);transition:width .2s}.trouble-picker-row{display:flex;align-items:center;gap:9px;margin-bottom:14px;color:var(--muted);font-size:11px;font-weight:800}.trouble-picker-row select{min-width:250px;max-width:100%;border:1px solid #bfd0c1;border-radius:9px;padding:8px;background:white;color:var(--ink);font-size:11px}.trouble-case-status{margin-left:auto;color:var(--green-dark);font-size:10px}.trouble-grid{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:14px;align-items:start}.trouble-card,.trouble-side{padding:18px;border:1px solid var(--line);border-radius:14px;background:#fffefa}.trouble-kicker{margin:0 0 5px;color:var(--green);font-size:10px;font-weight:850;letter-spacing:.1em;text-transform:uppercase}.trouble-card h3,.trouble-side h3{margin:0;font-size:20px;line-height:1.2}.trouble-symptom{margin:14px 0;padding:13px 14px;border-left:4px solid var(--amber);border-radius:0 10px 10px 0;background:#fff8e8}.trouble-symptom strong{font-size:11px}.trouble-symptom p{margin:4px 0 0;color:#536158;font-size:12px}.trouble-card h4{margin:15px 0 8px;font-size:12px}.trouble-evidence{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:7px}.evidence-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:7px;padding:8px 9px;border:1px solid var(--line);border-radius:8px;background:#f8faf6}.evidence-row strong{font:700 10px ui-monospace,"Cascadia Code",Consolas,monospace;overflow-wrap:anywhere}.evidence-value{padding:3px 6px;border-radius:99px;background:#edf1ec;color:#526257;font-size:9px;font-weight:850}.evidence-value.attention{background:var(--red-pale);color:#814a31}.evidence-value.normal{background:var(--green-pale);color:var(--green-dark)}.evidence-value.logic{max-width:100%;border-radius:6px;background:var(--blue-pale);color:#45657c;font:700 9px/1.4 ui-monospace,Consolas,monospace;overflow-wrap:anywhere}.trouble-card h4.trouble-question{margin-top:18px}.trouble-choices{display:grid;gap:7px}.diagnosis-choice{width:100%;border:1px solid var(--line);border-radius:9px;padding:10px 12px;background:white;cursor:pointer;text-align:left;font-size:11px;line-height:1.45}.diagnosis-choice:hover{border-color:var(--green);background:#f8fbf7}.diagnosis-choice.correct{border-color:#b8d2be;background:var(--green-pale);color:var(--green-dark)}.diagnosis-choice.incorrect{border-color:#e5c6b5;background:var(--red-pale);color:#814a31}.trouble-feedback{margin:10px 0;padding:10px 12px;border:1px solid var(--line);border-radius:9px;background:#f8faf6;color:#536158;font-size:11px}.trouble-feedback.try{border-color:#e5c6b5;background:var(--red-pale);color:#814a31}.trouble-feedback.correct{border-color:#b8d2be;background:var(--green-pale);color:var(--green-dark);font-weight:700}.trouble-hints{display:flex;flex-wrap:wrap;align-items:start;gap:9px;margin-top:10px}.trouble-hints #trouble-hint-list{flex:1;min-width:200px;padding:8px 10px;border-radius:9px;background:#f2f5ef}.trouble-hints #trouble-hint-list p{margin:0 0 5px;color:#536158;font-size:11px}.trouble-hints #trouble-hint-list p:last-child{margin-bottom:0}.trouble-explanation{margin-top:14px;padding:15px;border:1px solid #c8ddce;border-radius:11px;background:#f4f8f2}.trouble-explanation h4{margin:0 0 7px;font-size:14px}.trouble-explanation>p:not(.eyebrow){margin:6px 0;color:#46554b;font-size:11px}.first-check{margin:10px 0;padding:10px 11px;border-radius:9px;background:#fffefa}.first-check strong{font-size:10px}.first-check p{margin:4px 0 0;color:#536158;font-size:11px}.trouble-nav{display:flex;justify-content:space-between;gap:8px;margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}.trouble-side h3{font-size:16px}.signal-path{display:grid;gap:0;margin:13px 0;padding:0;list-style:none;counter-reset:signal}.signal-path li{position:relative;display:grid;gap:2px;padding:0 0 14px 29px;counter-increment:signal}.signal-path li:before{position:absolute;left:0;top:0;display:grid;width:20px;height:20px;place-items:center;border-radius:50%;background:var(--green-pale);color:var(--green-dark);content:counter(signal);font-size:9px;font-weight:850}.signal-path li:not(:last-child):after{position:absolute;left:9px;top:20px;bottom:0;width:2px;background:#dfe8de;content:""}.signal-path strong{font-size:10px}.signal-path span{color:var(--muted);font-size:10px;line-height:1.4}.trouble-safety{margin:8px 0 0;padding:10px;border:1px solid #ecd9b0;border-radius:9px;background:#fff8e8;color:#644e24;font-size:10px;line-height:1.45}.trouble-safety strong{display:block;margin-bottom:3px}
@media(max-width:900px){.trouble-grid{grid-template-columns:minmax(0,1fr) 240px}.trouble-toolbar{align-items:stretch;flex-direction:column}.trouble-progress{width:100%}}
@media(max-width:650px){.troubleshooting-panel{padding:14px}.trouble-grid{grid-template-columns:1fr}.trouble-side{order:2}.trouble-picker-row{align-items:stretch;flex-direction:column;gap:5px}.trouble-picker-row select{min-width:0;width:100%}.trouble-case-status{margin-left:0}.trouble-evidence{grid-template-columns:1fr}.trouble-card{padding:14px}.trouble-nav{flex-wrap:wrap}.primary-tabs{width:100%;max-width:100%;overflow-x:auto}.primary-tab{flex:0 0 auto;padding:8px 10px}}
.difficulty-intro{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px;margin:2px 0 8px}.difficulty-intro strong{font-size:12px}.difficulty-intro span{color:var(--muted);font-size:10px}.difficulty-groups{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-bottom:13px}.difficulty-card{display:grid;grid-template-columns:1fr auto;gap:2px 8px;border:1px solid var(--line);border-radius:10px;padding:10px 12px;background:#fffefa;cursor:pointer;text-align:left}.difficulty-card:hover{border-color:var(--green)}.difficulty-card.active{border-color:#a9cbb2;background:var(--green-pale);box-shadow:0 0 0 1px #a9cbb2}.difficulty-card strong{color:var(--ink);font-size:12px}.difficulty-card span{align-self:center;color:var(--muted);font-size:9px;font-weight:750}.difficulty-card small{grid-column:1/-1;color:var(--muted);font-size:9px;line-height:1.35}.difficulty-card[aria-pressed="true"] strong{color:var(--green-dark)}
@media(max-width:650px){.difficulty-groups{grid-template-columns:1fr}.difficulty-card{grid-template-columns:1fr auto}.difficulty-card small{grid-column:1/-1}}