.main-container{max-width:960px;margin:0 auto;padding:1.5rem 1.5rem 3rem}.page-title{font-family:var(--calc-font-headline);color:var(--calc-text-primary);margin:0 0 .5rem;font-size:clamp(1.6rem,4vw,2.4rem)}.page-subtitle{color:var(--calc-text-faded);max-width:68ch;margin:0 0 1.25rem;line-height:1.5}.action-bar{flex-wrap:wrap;gap:.5rem;margin-bottom:1rem;display:flex}.action-btn{background:var(--calc-bg-input);border:1px solid var(--calc-border-default);color:var(--calc-text-faded);cursor:pointer;font-size:.8rem;font-weight:600;font-family:var(--calc-font-body);border-radius:8px;padding:.5rem .9rem;transition:border-color .2s,color .2s,background-color .2s}.action-btn:hover{border-color:var(--calc-cyan);color:var(--calc-cyan)}.action-btn--reset:hover{border-color:var(--calc-rose);color:var(--calc-rose)}.preset-bar{background:var(--calc-bg-card);border:1px solid var(--calc-border-default);border-radius:var(--calc-radius-md);flex-wrap:wrap;align-items:center;gap:.5rem;margin-bottom:1.25rem;padding:.6rem .85rem;display:flex}.preset-label{color:var(--calc-text-dim);text-transform:uppercase;letter-spacing:.04em;margin-right:.25rem;font-size:.8rem;font-weight:600}.preset-chip{background:var(--calc-bg-input);border:1px solid var(--calc-border-strong);color:var(--calc-text-primary);cursor:pointer;border-radius:20px;padding:.35rem .75rem;font-size:.78rem;font-weight:500;transition:all .15s ease-in-out}.preset-chip:hover{border-color:var(--calc-cyan);color:var(--calc-cyan);background:#0891b214}.input-card,.result-card,.visualizer-card,.step-card,.trust-card{background:var(--calc-bg-card);border:1px solid var(--calc-border-default);border-radius:var(--calc-radius-lg);margin-bottom:1.25rem;padding:1.25rem 1.5rem}.card-title{font-family:var(--calc-font-headline);text-transform:uppercase;letter-spacing:.05em;color:var(--calc-text-faded);margin:0 0 1rem;font-size:.95rem}.form-group{flex-direction:column;gap:.4rem;margin-bottom:1rem;display:flex}.form-group:last-child{margin-bottom:0}.form-group label{color:var(--calc-text-faded);font-size:.88rem;font-weight:500}.form-group input,.form-group select,.unit-select{background:var(--calc-bg-input);border:1px solid var(--calc-border-strong);border-radius:var(--calc-radius-md);color:var(--calc-text-primary);font-family:var(--calc-font-mono);width:100%;padding:.6rem .8rem;font-size:1rem;transition:border-color .15s}.form-group input:focus,.form-group select:focus,.unit-select:focus{border-color:var(--calc-cyan);outline:none}.unit-select{width:auto;min-width:85px;padding:.55rem .65rem;font-size:.85rem}.optional-group{border-top:1px dashed var(--calc-border-subtle,#ffffff14);padding-top:.75rem}.input-hint{color:var(--calc-text-dim);font-size:.78rem;line-height:1.4}.input-row{align-items:center;gap:.5rem;display:flex}.input-row input{flex:1}.unit-suffix{color:var(--calc-text-dim);font-family:var(--calc-font-mono);white-space:nowrap;min-width:32px;font-size:.88rem}.result-value{font-family:var(--calc-font-mono);color:var(--calc-cyan);margin-bottom:.3rem;font-size:clamp(1.8rem,5vw,2.6rem);font-weight:700}.result-detail{color:var(--calc-text-faded);font-size:.92rem;line-height:1.5}.polarity-badge{color:var(--calc-cyan);background:#0891b226;border:1px solid #0891b259;border-radius:12px;margin-top:.6rem;padding:.3rem .75rem;font-size:.82rem;font-weight:600;display:inline-block}.circuit-stats-grid{border:1px solid var(--calc-border-default);border-radius:var(--calc-radius-md);background:#ffffff05;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:.75rem;margin-top:.9rem;padding:.85rem;display:grid}.stat-item{flex-direction:column;gap:.2rem;display:flex}.stat-label{color:var(--calc-text-dim);text-transform:uppercase;font-size:.75rem}.stat-val{font-family:var(--calc-font-mono);color:var(--calc-text-primary);font-size:1rem;font-weight:600}.interpretation{color:var(--calc-text-dim);border-top:1px solid var(--calc-border-subtle,#ffffff14);margin-top:.75rem;padding-top:.75rem;font-size:.85rem;line-height:1.5}.visualizer-canvas-container{background:var(--calc-bg-input);border:1px solid var(--calc-border-default);border-radius:var(--calc-radius-md);justify-content:center;align-items:center;width:100%;min-height:200px;padding:1rem;display:flex;overflow:hidden}.visualizer-svg{width:100%;max-width:650px;height:auto}.step-content{font-family:var(--calc-font-mono);color:var(--calc-text-primary);background:var(--calc-bg-input);border:1px solid var(--calc-border-default);border-radius:var(--calc-radius-md);padding:1rem;font-size:.88rem;line-height:1.6;overflow-x:auto}.step-placeholder{font-family:var(--calc-font-body);color:var(--calc-text-dim);margin:0;font-style:italic}.trust-card{border-left:4px solid var(--calc-cyan)}.trust-milestone{color:var(--calc-text-dim);margin:0 0 .85rem;font-size:.82rem}.trust-reference-list{color:var(--calc-text-faded);margin:0 0 .85rem;padding-left:1.25rem;font-size:.85rem;line-height:1.6}.trust-reference-list li{margin-bottom:.4rem}.trust-disclaimer{color:var(--calc-text-dim);margin:0;font-size:.78rem;line-height:1.4}[data-theme=light] .action-btn{color:#334155;background:#f0f4f9;border-color:#00000026}[data-theme=light] .preset-bar{background:#f8fafc;border-color:#0000001f}[data-theme=light] .preset-chip{color:#1e293b;background:#fff;border-color:#00000026}[data-theme=light] .preset-chip:hover{color:#0891b2;background:#0891b21a}[data-theme=light] .input-card,[data-theme=light] .result-card,[data-theme=light] .visualizer-card,[data-theme=light] .step-card,[data-theme=light] .trust-card{background:#fff;border-color:#0000001f;box-shadow:0 1px 4px #0000000d}[data-theme=light] .form-group input,[data-theme=light] .form-group select,[data-theme=light] .unit-select,[data-theme=light] .visualizer-canvas-container,[data-theme=light] .step-content{background:#f0f4f9;border-color:#00000026}[data-theme=light] .circuit-stats-grid{background:#f8fafc;border-color:#0000001a}[data-theme=light] .unit-suffix{color:#64748b}[data-theme=light] .result-value{color:#0891b2}[data-theme=light] .interpretation{border-top-color:#00000014}[data-theme=light] .trust-reference-list{color:#334155}