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0;font-size:11.5px}.phone{background:var(--ink-surface);width:210px;box-shadow:var(--shadow);border-radius:28px;padding:10px;position:absolute;top:84px;right:20px}.phone[hidden]{display:none}.phone-screen{min-height:260px;color:var(--ink);background:#fbf8f2;border-radius:20px;flex-direction:column;gap:10px;padding:12px;font-size:13px;display:flex}.phone-bar{color:var(--muted);font:11px var(--mono);white-space:nowrap;text-overflow:ellipsis;background:#ece5d8;border-radius:8px;padding:5px 8px;overflow:hidden}.phone-bar.ble{color:#3f6fd1;font-family:var(--sans);background:#e2e9f8}.phone-screen h4{color:var(--navy);font:600 16px var(--cond);margin:4px 0 0}.phone-btns{flex-wrap:wrap;gap:8px;display:flex}.phone-btns button{background:var(--teal);color:#fff;min-width:70px;height:34px;font:600 13px var(--sans);cursor:pointer;border:0;border-radius:10px;flex:1}.phone[data-kind=ble] .phone-btns button{background:#3f6fd1}.phone-btns button:disabled{background:var(--line);cursor:not-allowed}.phone-btns button:focus-visible{outline:2px solid var(--navy);outline-offset:2px}.phone-out{font:12px/1.5 var(--mono);white-space:pre-wrap;color:var(--navy);background:#f1ebe0;border-radius:8px;flex:1;margin:0;padding:8px}.view-tools{border:1px solid var(--line);background:var(--card);box-shadow:var(--shadow);border-radius:12px;align-items:center;gap:2px;padding:4px;display:flex;position:absolute;bottom:126px;left:50%;transform:translate(-50%)}.view-tools .sep{background:var(--line);width:1px;height:18px;margin:0 4px}.view-tools .icon-btn[aria-pressed=true]{color:var(--teal)}.view-tools .icon-btn[aria-pressed=false]{color:var(--faint)}.minimap{border:1px solid var(--line);background:var(--map-bg);width:168px;height:112px;box-shadow:var(--shadow);cursor:crosshair;border-radius:10px;position:absolute;bottom:126px;left:16px}.no-annot .annot-layer,.no-annot .leader{display:none}.schematic{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);width:min(760px,100% - 32px);max-height:calc(100% - 48px);color:var(--ink);box-shadow:var(--shadow);padding:18px 22px}.schematic::backdrop{background:var(--backdrop)}.schematic header{justify-content:space-between;align-items:center;gap:12px;display:flex}.schematic h2{font:600 18px var(--cond);color:var(--navy);margin:0}.schematic-body{border:1px solid var(--line-soft);background:var(--sch-bg);border-radius:8px;margin-top:10px;overflow:auto}.schematic-body svg{max-width:100%;height:auto;display:block}.schematic svg line,.schematic svg path{stroke:var(--navy);stroke-width:1.6px;fill:none}.schematic svg .body{fill:var(--sch-bg);stroke:var(--navy);stroke-width:1.6px}.schematic svg .chip{fill:var(--sch-chip);stroke:var(--navy);stroke-width:1.6px}.schematic svg .arrow{stroke:var(--warn)}.schematic svg text{fill:var(--navy);font:12px var(--sans);text-anchor:middle}.schematic svg text.pin{fill:var(--muted);font:11px var(--mono)}.schematic svg text.title,.schematic svg text.ref{font:600 13px var(--sans)}.schematic svg text.sym{font:600 11px var(--mono)}.schematic svg .netlabel rect{fill:var(--teal-soft);stroke:var(--teal);stroke-width:1px}.schematic svg .netlabel text{fill:var(--teal);font:600 11px var(--mono)}.schematic svg .netlabel.gnd rect{fill:#ececec;stroke:#5a5d66}.schematic svg .netlabel.gnd text{fill:#3a3d46}.schematic svg .netlabel.pwr rect{fill:#fbe3df;stroke:#d9473b}.schematic svg .netlabel.pwr text{fill:#b5372c}@media (width<=900px){.minimap,.title p{display:none}.progress-card{padding:6px 10px;top:14px;right:12px}.pc-bar{width:56px}}.side-pop{z-index:4;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);width:min(320px,100% - 32px);max-height:calc(100% - 250px);box-shadow:var(--shadow);flex-direction:column;display:flex;position:absolute;top:96px;left:16px}.side-pop[hidden]{display:none}.side-pop header{border-bottom:1px solid var(--line-soft);align-items:center;gap:10px;padding:12px 10px 10px 16px;display:flex}.side-pop h2{font:600 17px var(--cond);color:var(--navy);margin:0}.side-pop header span{color:var(--muted);flex:1;font-size:12px}.side-scroll{padding:4px 12px 12px;overflow-y:auto}.side-pop h3{font:600 13px var(--cond);letter-spacing:.06em;color:var(--muted);margin:12px 4px 6px}.side-pop ul{margin:0;padding:0;list-style:none}.side-pop li{border-top:1px solid var(--line-soft);align-items:flex-start;gap:10px;padding:8px 4px;display:flex}.side-pop li:first-child{border-top:0}.side-pop strong{font:600 13.5px var(--sans);color:var(--navy)}.side-pop p{-webkit-line-clamp:2;color:var(--muted);-webkit-box-orient:vertical;margin:2px 0 0;font-size:12px;line-height:1.5;display:-webkit-box;overflow:hidden}.parts-locate{border:1px solid var(--line);background:var(--card);width:28px;height:28px;color:var(--teal);cursor:pointer;border-radius:8px;flex:none;place-items:center;margin-top:2px;display:grid}.parts-locate svg{width:15px;height:15px}.parts-locate:hover{border-color:var(--teal)}.parts-locate:focus-visible{outline:2px solid var(--teal);outline-offset:2px}.settings-pop li{align-items:center}.settings-pop li>div:first-child{flex:1}.switch{background:var(--line);cursor:pointer;border:0;border-radius:11px;flex:none;width:38px;height:22px;padding:0;transition:background .15s;position:relative}.switch span{background:#fff;border-radius:50%;width:16px;height:16px;transition:transform .15s;position:absolute;top:3px;left:3px;box-shadow:0 1px 2px #0003}.switch[aria-checked=true]{background:var(--teal)}.switch[aria-checked=true] span{transform:translate(16px)}.seg{border:1px solid var(--line);border-radius:8px;flex:none;padding:2px;display:flex}.seg button{min-width:30px;height:24px;color:var(--muted);font:500 12.5px var(--sans);cursor:pointer;background:0 0;border:0;border-radius:6px}.seg button[aria-checked=true]{background:var(--teal);color:#fff}.switch:focus-visible,.seg button:focus-visible{outline:2px solid var(--teal);outline-offset:2px}.settings-actions{border-top:1px solid var(--line-soft);justify-content:space-between;gap:8px;padding:12px 4px 2px;display:flex}.reduce-motion *,.reduce-motion :before,.reduce-motion :after{transition:none!important;animation:none!important}.skip-link{z-index:50;background:var(--ink-surface);color:#fff;font:600 14px var(--sans);border-radius:8px;padding:8px 14px;text-decoration:none;position:fixed;top:8px;left:8px;transform:translateY(-200%)}.skip-link:focus{outline:2px solid var(--teal);outline-offset:2px;transform:none}#lesson-panel:focus{outline:none}:where(button,a,input,select,textarea,[tabindex]):focus-visible{outline:2px solid var(--teal);outline-offset:2px}.stage-note{z-index:6;border:1px solid var(--line);border-radius:var(--radius);background:var(--card);width:min(420px,100% - 32px);box-shadow:var(--shadow);color:var(--ink);padding:18px 20px;font-size:14px;line-height:1.7;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.stage-note p{margin:0 0 8px}.stage-note strong{color:var(--navy)}.stage-note .ghost-btn{margin-top:4px}.is-fallback .stage-note{top:40%}.part-inputs{border:1px solid var(--line);background:var(--card);box-shadow:var(--shadow);border-radius:12px;align-items:center;gap:8px;padding:5px;display:flex;position:absolute;bottom:176px;left:50%;transform:translate(-50%)}.part-inputs[hidden]{display:none}.pi-hold{border:1px solid var(--teal);background:var(--card);height:30px;color:var(--teal);font:600 13px var(--sans);cursor:pointer;touch-action:none;-webkit-user-select:none;user-select:none;border-radius:8px;padding:0 12px}.pi-hold[aria-pressed=true]{background:var(--teal);color:#fff}.pi-knob{color:var(--ink);font:500 13px var(--sans);align-items:center;gap:8px;padding:0 8px;display:flex}.pi-knob input{width:140px;accent-color:var(--teal)}.lang-select{border:1px solid var(--line);background:var(--card);height:28px;color:var(--ink);font:500 12.5px var(--sans);border-radius:8px;flex:none;padding:0 6px}.lang-btn{position:relative}.lang-btn span{background:var(--card);color:var(--teal);font:700 9px/12px var(--sans);border-radius:4px;padding:0 3px;position:absolute;bottom:3px;right:2px}.js .static-page,html:not(.js) #app{display:none}.static-page{max-width:760px;color:var(--ink);font:15px/1.7 var(--sans);margin:0 auto;padding:32px 20px 48px}.static-page h1{font:600 30px var(--cond);color:var(--navy);margin:0}.static-page h2{font:600 19px var(--cond);color:var(--navy);margin:28px 0 8px}.static-page ol{margin:0;padding-left:0;list-style:none}.static-page li{border-top:1px solid var(--line-soft);padding:8px 0}.static-page li a{color:var(--navy);font-weight:600;text-decoration:none}.static-page li p{color:var(--muted);margin:2px 0 0}.static-page .sp-note{background:var(--warn-bg);border-radius:8px;margin-top:28px;padding:12px 14px}