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.jumper-bend{fill:#fbfbf7;stroke:#e8632a;stroke-width:2px;cursor:move;pointer-events:all}.board-overlay .pcb-trace{pointer-events:all}.board-overlay .pcb-trace path{fill:none;stroke-linecap:round;stroke-linejoin:round}.board-overlay .pcb-trace-shadow{stroke:#103720;stroke-width:8px;opacity:.7;pointer-events:none}.board-overlay .pcb-trace-body{stroke:#c89b50;stroke-width:3.2px;pointer-events:none}.board-overlay .pcb-trace-highlight{stroke:#f0d587;stroke-width:.9px;opacity:.82;pointer-events:none;transform:translateY(-.6px)}.board-overlay .pcb-trace-hit{stroke:#0000;stroke-width:15px;pointer-events:stroke;cursor:pointer}.board-overlay .pcb-trace-preview{opacity:.68;pointer-events:none}.board-overlay .board-part{pointer-events:all;cursor:grab}.board-overlay .motor-rotor-mark{stroke:#f5d8a0;stroke-width:2.5px;stroke-linecap:round;transform-origin:50%}.board-overlay .board-part.energized .motor-rotor-mark{animation:.8s linear infinite motor-turn}.board-overlay .buzzer-wave{fill:none;stroke:#b6a2bd;stroke-width:1.5px;stroke-linecap:round;opacity:.5}.board-overlay .buzzer-wave.active{stroke:#f0b765;opacity:1;animation:.65s ease-in-out infinite alternate buzzer-pulse}@keyframes motor-turn{to{transform:rotate(360deg)}}@keyframes buzzer-pulse{to{opacity:.35;transform:scale(.9)}}@media (prefers-reduced-motion:reduce){.board-overlay .board-part.energized .motor-rotor-mark,.board-overlay .buzzer-wave.active{animation:none}}.board-overlay .board-part.selected{filter:drop-shadow(0 0 3px #e8632a99)}.board-overlay .board-part.energized .part-body{filter:drop-shadow(0 0 5px #fc5a)}.board-overlay .board-part.energized .rgb-bulb{fill:#fff8cf;filter:drop-shadow(0 0 9px #fff1a8)}.board-overlay .rgb-chip.red.active{fill:#ff5049;filter:drop-shadow(0 0 5px #ff2d23)}.board-overlay .rgb-chip.green.active{fill:#7eff65;filter:drop-shadow(0 0 5px #52ff32)}.board-overlay .rgb-chip.blue.active{fill:#59b7ff;filter:drop-shadow(0 0 5px #208dff)}.board-overlay .lcd-module-body{fill:#a5a9a1;stroke:#e5e6dc;stroke-width:1.5px;filter:drop-shadow(0 2px 2px #0008)}.board-overlay .lcd-glass{fill:#b6cf9a;stroke:#4a6558;stroke-width:1.2px}.board-overlay .lcd-text{fill:#334d3d;letter-spacing:.4px;font:7px ui-monospace,monospace}.board-overlay .oled-module-body{fill:#282d31;stroke:#8c9ca1;stroke-width:1.3px;filter:drop-shadow(0 2px 2px #0008)}.board-overlay .oled-glass{fill:#07151c;stroke:#375969;stroke-width:.8px}.board-overlay .oled-text{fill:#7ee3f3;font:6px ui-monospace,monospace}.board-overlay .oled-pixels{fill:#7ee3f3;shape-rendering:crispedges}.board-overlay .segment-module-body{fill:#303533;stroke:#98a39a;stroke-width:1.3px;filter:drop-shadow(0 2px 2px #0008)}.board-overlay .logic-probe-marker{filter:drop-shadow(0 0 3px #0b0d0a)}.board-overlay .logic-probe-marker-label{paint-order:stroke;stroke:#11140f;stroke-width:2px;pointer-events:none;font:800 9px ui-monospace,monospace}.board-overlay .tm1637-segments .segment{fill:#702a28;stroke:#5b2927;stroke-width:.45px;stroke-linejoin:round}.board-overlay .tm1637-segments .segment.lit,.board-overlay .tm1637-segments .segment-dot.lit{fill:#ff5149;stroke:#ff5149;filter:drop-shadow(0 0 2px #ff392f)}.board-overlay .tm1637-segments .segment-dot{fill:#702a28;stroke:#5b2927;stroke-width:.35px}.board-overlay .display-mark{fill:#e2dccb;letter-spacing:.4px;font:5px ui-monospace,monospace}.board-overlay .display-pin-label{fill:#30332d;text-anchor:middle;font:5px ui-monospace,monospace}.board-overlay .display-module text,.board-overlay .part-pin,.board-overlay .part-lead{pointer-events:none}.board-overlay .part-pin{cursor:crosshair}.breadboard-wrap.solder-mode .board-overlay .part-pin,.board-overlay .part-body,.board-overlay .tact-body,.board-overlay .tact-cap,.board-overlay .dip-body,.board-overlay .rgb-bulb,.board-overlay .inertial-board,.board-overlay .magnet-body{pointer-events:all;cursor:grab}.board-overlay .board-part.selected .part-pin{stroke:#e8632a;stroke-width:1.5px}.breadboard-wrap[data-astro-cid-zlbgo7wo] .part-move-target[data-astro-cid-zlbgo7wo]{outline-offset:2px;outline:2px solid #0f9e8c!important}.wire-item[data-astro-cid-zlbgo7wo].selected{border-color:#e8632a;box-shadow:0 0 0 2px #e8632a22}.wire-options[data-astro-cid-zlbgo7wo]{border-top:1px solid #dedfd7;grid-column:1/-1;gap:8px;padding-top:7px;display:grid}.wire-color-picker[data-astro-cid-zlbgo7wo]{flex-wrap:wrap;gap:5px;display:flex}.wire-color-swatch[data-astro-cid-zlbgo7wo]{background:var(--swatch);cursor:pointer;border:2px solid #0000;border-radius:50%;width:19px;height:19px;padding:0}.wire-color-swatch[data-astro-cid-zlbgo7wo].active{outline-offset:1px;outline:2px solid #16202b}.wire-insulation-toggle[data-astro-cid-zlbgo7wo]{color:#586470;align-items:center;gap:7px;font-size:10px;display:flex}.part-drag-ghost[data-astro-cid-zlbgo7wo]{z-index:1000;pointer-events:none;opacity:.94;background:#fbfbf7;border:1px solid #e8632a;border-radius:10px;place-items:center;gap:1px;width:70px;height:62px;padding:5px;display:grid;position:fixed;transform:translate(-50%,-50%);box-shadow:0 8px 24px #16202b30}.part-drag-ghost[data-astro-cid-zlbgo7wo] svg[data-astro-cid-zlbgo7wo]{width:42px;height:34px;overflow:visible}.part-drag-ghost[data-astro-cid-zlbgo7wo] span[data-astro-cid-zlbgo7wo]{color:#16202b;text-overflow:ellipsis;white-space:nowrap;max-width:100%;font-size:8px;font-weight:800;overflow:hidden}.probe-drag-ghost[data-astro-cid-zlbgo7wo]{z-index:1000;color:#16202b;pointer-events:none;background:#fbfbf7;border:1px solid #d3c7ae;border-radius:18px;align-items:center;gap:7px;padding:8px 10px;font-size:10px;font-weight:700;display:flex;position:fixed;transform:translate(-18%,-50%);box-shadow:0 8px 24px #16202b30}.probe-drag-ghost[data-astro-cid-zlbgo7wo] i[data-astro-cid-zlbgo7wo]{background:#e9554c;border-radius:50%;width:12px;height:12px;box-shadow:0 0 0 2px #e9554c33}.probe-drag-ghost[data-astro-cid-zlbgo7wo].black-probe i[data-astro-cid-zlbgo7wo]{background:#303638;box-shadow:0 0 0 2px #30363833}.breadboard-wrap[data-astro-cid-zlbgo7wo] .drop-invalid[data-astro-cid-zlbgo7wo]{transform:scale(1.2);box-shadow:0 0 0 4px #d9534f55;background:#d9534f!important}@media (width>=1101px){.lab-workspace[data-astro-cid-zlbgo7wo]{grid-template-columns:176px minmax(0,1fr) 280px;gap:14px}.parts-panel[data-astro-cid-zlbgo7wo],.instrument-panel[data-astro-cid-zlbgo7wo]{padding:13px}.component-list[data-astro-cid-zlbgo7wo]{grid-template-columns:repeat(2,minmax(0,1fr));gap:5px}.part-card[data-astro-cid-zlbgo7wo]{text-align:center;flex-direction:column;justify-content:center;gap:3px;min-height:64px;padding:6px 3px;display:flex;position:relative}.part-card[data-astro-cid-zlbgo7wo]>span[data-astro-cid-zlbgo7wo]:nth-child(2){min-width:0}.part-card[data-astro-cid-zlbgo7wo] small[data-astro-cid-zlbgo7wo]{display:none}.part-card[data-astro-cid-zlbgo7wo] 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button[data-astro-cid-zlbgo7wo],.hole-grid[data-astro-cid-zlbgo7wo] button[data-astro-cid-zlbgo7wo]{width:clamp(6px,calc(var(--pitch)*.32),10px);height:clamp(6px,calc(var(--pitch)*.32),10px)}.column-labels[data-astro-cid-zlbgo7wo]{grid-template-columns:repeat(26,var(--pitch));gap:0;height:17px;margin-left:20px}.rail-holes[data-astro-cid-zlbgo7wo] button[data-astro-cid-zlbgo7wo]{width:9px;height:9px}.hole-grid[data-astro-cid-zlbgo7wo] button[data-astro-cid-zlbgo7wo]{width:9px;height:9px}.row-labels[data-astro-cid-zlbgo7wo]{grid-template-rows:repeat(5,var(--pitch));gap:0}.rail[data-astro-cid-zlbgo7wo]{height:var(--pitch);gap:4px}.rail[data-astro-cid-zlbgo7wo]>span[data-astro-cid-zlbgo7wo],.row-labels[data-astro-cid-zlbgo7wo]{width:16px;min-width:16px}.breadboard-bank[data-astro-cid-zlbgo7wo]{gap:4px;margin-top:0}.board-gap[data-astro-cid-zlbgo7wo]{height:39px;margin:8px 0}.rail-holes[data-astro-cid-zlbgo7wo]:after{display:none}@media (width<=700px){.breadboard-wrap[data-astro-cid-zlbgo7wo]{--pitch:clamp(9px,calc((100vw - 88px)/26),28px);min-height:0;padding:10px 8px}.column-labels[data-astro-cid-zlbgo7wo]{height:clamp(6px,2.5vw - 2.2px,17px)}.board-gap[data-astro-cid-zlbgo7wo]{height:clamp(13px,7.69231vw - 6.76923px,39px);margin:clamp(3px,1.92308vw - 1.69231px,8px) 0}.rail-holes[data-astro-cid-zlbgo7wo] button[data-astro-cid-zlbgo7wo],.hole-grid[data-astro-cid-zlbgo7wo] button[data-astro-cid-zlbgo7wo]{width:clamp(6px,calc(var(--pitch)*.32),10px);height:clamp(6px,calc(var(--pitch)*.32),10px)}.lab-toolbar[data-astro-cid-zlbgo7wo]{overflow-x:auto}.lab-toolbar[data-astro-cid-zlbgo7wo] .board-actions[data-astro-cid-zlbgo7wo]{flex-wrap:nowrap}.lab-toolbar[data-astro-cid-zlbgo7wo] .quiet-button[data-astro-cid-zlbgo7wo]{flex:none}}.challenge-panel[data-astro-cid-zlbgo7wo],.repair-panel[data-astro-cid-zlbgo7wo]{color:#16202b;background:#fbfbf7;border:1px solid #d4d8d0;border-radius:12px;margin-top:16px;padding:18px}.repair-heading[data-astro-cid-zlbgo7wo]{justify-content:space-between;align-items:flex-end;gap:18px;display:flex}.repair-heading[data-astro-cid-zlbgo7wo] h2[data-astro-cid-zlbgo7wo]{letter-spacing:-.035em;margin:0;font-size:20px}.repair-heading[data-astro-cid-zlbgo7wo]>div[data-astro-cid-zlbgo7wo]>p[data-astro-cid-zlbgo7wo]:last-child{color:#586470;max-width:700px;margin:6px 0 0;font-size:11px;line-height:1.55}.repair-heading[data-astro-cid-zlbgo7wo]>label[data-astro-cid-zlbgo7wo]{color:#586470;text-transform:uppercase;letter-spacing:.06em;gap:5px;min-width:min(250px,100%);font-size:9px;font-weight:700;display:grid}.repair-heading[data-astro-cid-zlbgo7wo] select[data-astro-cid-zlbgo7wo]{color:#16202b;text-transform:none;letter-spacing:normal;background:#f5f4ee;border:1px solid #c2c7bd;border-radius:8px;padding:8px 10px;font:600 11px Nunito,system-ui,sans-serif}.repair-tools[data-astro-cid-zlbgo7wo]{color:#586470;align-items:center;gap:8px;margin:14px 0;font:9px ui-monospace,monospace;display:flex}.repair-tools[data-astro-cid-zlbgo7wo] #repair-progress[data-astro-cid-zlbgo7wo]{margin-left:auto}.repair-case[data-astro-cid-zlbgo7wo]{background:#f5f4ee;border:1px solid #d4d8d0;border-radius:9px;grid-template-columns:auto minmax(0,1fr);align-items:start;gap:12px;padding:14px;display:grid}.repair-case-mark[data-astro-cid-zlbgo7wo]{color:#fff;background:#e7b547;border-radius:9px;place-items:center;width:34px;height:34px;font:800 15px ui-monospace,monospace;display:grid}.repair-case[data-astro-cid-zlbgo7wo] b[data-astro-cid-zlbgo7wo]{font-size:12px}.repair-case[data-astro-cid-zlbgo7wo] p[data-astro-cid-zlbgo7wo]{color:#586470;margin:5px 0 0;font-size:10px;line-height:1.6}.repair-case[data-astro-cid-zlbgo7wo] p[data-astro-cid-zlbgo7wo][hidden]{display:none}.repair-case[data-astro-cid-zlbgo7wo] #repair-hint-text[data-astro-cid-zlbgo7wo]{color:#8b491b}.repair-case[data-astro-cid-zlbgo7wo] #repair-feedback[data-astro-cid-zlbgo7wo]{color:#586470}.repair-case[data-astro-cid-zlbgo7wo] #repair-feedback[data-astro-cid-zlbgo7wo].solved{color:#087866}.repair-case[data-astro-cid-zlbgo7wo] #repair-feedback[data-astro-cid-zlbgo7wo].failed{color:#a33d23}.repair-case[data-astro-cid-zlbgo7wo].solved{border-color:#0f9e8c}.repair-case[data-astro-cid-zlbgo7wo].solved .repair-case-mark[data-astro-cid-zlbgo7wo]{background:#0f9e8c}.solder-panel[data-astro-cid-zlbgo7wo]{color:#16202b;background:#fbfbf7;border:1px solid #d2a882;border-radius:12px;margin:16px 0;padding:18px}.solder-panel[data-astro-cid-zlbgo7wo][hidden]{display:none}.solder-heading[data-astro-cid-zlbgo7wo]{justify-content:space-between;align-items:flex-start;gap:14px;display:flex}.solder-heading[data-astro-cid-zlbgo7wo] h2[data-astro-cid-zlbgo7wo]{letter-spacing:-.035em;margin:0;font-size:20px}.solder-heading[data-astro-cid-zlbgo7wo]>div[data-astro-cid-zlbgo7wo]>p[data-astro-cid-zlbgo7wo]:last-child{color:#586470;max-width:760px;margin:5px 0 0;font-size:11px;line-height:1.6}.solder-heading[data-astro-cid-zlbgo7wo] .lab-kicker[data-astro-cid-zlbgo7wo]{color:#b8461a;margin-bottom:4px}.solder-tools[data-astro-cid-zlbgo7wo]{background:#f5f4ee;border:1px solid #dec0a6;border-radius:9px;flex-wrap:wrap;align-items:center;gap:8px;margin-top:15px;padding:10px;display:flex}.solder-tool[data-astro-cid-zlbgo7wo].active,.solder-feed[data-astro-cid-zlbgo7wo][aria-pressed=true]{color:#087866;background:#e8f4ed;border-color:#0f9e8c}.solder-temperature[data-astro-cid-zlbgo7wo]{color:#586470;grid-template-columns:auto auto;align-items:center;gap:2px 9px;font-size:9px;display:grid}.solder-temperature[data-astro-cid-zlbgo7wo] output[data-astro-cid-zlbgo7wo]{color:#16202b;text-align:right;font:700 10px ui-monospace,monospace}.solder-temperature[data-astro-cid-zlbgo7wo] input[data-astro-cid-zlbgo7wo]{accent-color:#e8632a;grid-column:1/-1;width:150px}.solder-tools[data-astro-cid-zlbgo7wo] #solder-temperature-status[data-astro-cid-zlbgo7wo]{color:#586470;font:9px ui-monospace,monospace}.solder-progress[data-astro-cid-zlbgo7wo]{color:#586470;grid-template-columns:auto 120px;align-items:center;gap:8px;margin-left:auto;font:9px ui-monospace,monospace;display:grid}.solder-progress-track[data-astro-cid-zlbgo7wo]{background:#dde1d8;border-radius:99px;height:6px;overflow:hidden}.solder-progress-track[data-astro-cid-zlbgo7wo] i[data-astro-cid-zlbgo7wo]{background:#0f9e8c;width:0;height:100%;transition:width .15s;display:block}.solder-feedback[data-astro-cid-zlbgo7wo]{color:#586470;min-height:18px;margin:9px 0 0;font-size:10px}.solder-keyboard-hint[data-astro-cid-zlbgo7wo]{color:#6e7885;margin:2px 0 0;font-size:9px;line-height:1.5}.solder-mode[data-astro-cid-zlbgo7wo] .board-gap[data-astro-cid-zlbgo7wo]{color:#9ec9a8;background:#1e6843;border-color:#17462f}.challenge-heading[data-astro-cid-zlbgo7wo]{justify-content:space-between;align-items:flex-end;gap:18px;display:flex}.challenge-heading[data-astro-cid-zlbgo7wo] h2[data-astro-cid-zlbgo7wo]{color:#16202b;letter-spacing:-.035em;margin:0;font-size:20px}.challenge-heading[data-astro-cid-zlbgo7wo] p[data-astro-cid-zlbgo7wo]:last-child{color:#586470;margin:6px 0 0;font-size:11px;line-height:1.55}.challenge-heading[data-astro-cid-zlbgo7wo]>label[data-astro-cid-zlbgo7wo]{color:#586470;text-transform:uppercase;letter-spacing:.06em;gap:5px;min-width:min(250px,100%);font-size:9px;font-weight:700;display:grid}.challenge-heading[data-astro-cid-zlbgo7wo] select[data-astro-cid-zlbgo7wo]{color:#16202b;text-transform:none;letter-spacing:normal;background:#f5f4ee;border:1px solid #c2c7bd;border-radius:8px;padding:8px 10px;font:600 11px 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