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var(--calc-border-default);border-radius:var(--calc-radius-lg);padding:20px}.result-panel{min-height:260px}.card-title{font-family:var(--calc-font-headline);text-transform:uppercase;letter-spacing:.05em;color:var(--calc-text-faded);margin:0 0 12px;font-size:.85rem}.control-bar{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:18px;display:flex}.ctrl-label{color:var(--calc-text-muted,var(--calc-text-faded));text-transform:uppercase;letter-spacing:.05em;white-space:nowrap;font-size:.78rem;font-weight:600}.glass-input{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);padding:.5rem .7rem;font-size:.95rem}.glass-input:focus{border-color:var(--calc-cyan);outline:none}.form-group{flex-direction:column;gap:.4rem;margin-bottom:14px;display:flex}.form-group label{color:var(--calc-text-dim);font-size:.85rem;font-weight:600}.form-group 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18px;display:flex;overflow-x:auto}.outer-tabs-bar::-webkit-scrollbar{display:none}.outer-tab-btn{cursor:pointer;color:var(--calc-text-dim);white-space:nowrap;background:0 0;border:none;border-bottom:2px solid #0000;margin-bottom:-2px;padding:10px 18px;font-size:.88rem;font-weight:500;transition:color .2s,border-color .2s}.outer-tab-btn.active{color:var(--calc-cyan);border-bottom-color:var(--calc-cyan)}.outer-tab-btn:hover{color:var(--calc-text-primary)}.outer-tab-panel.is-hidden{display:none}.op-equation{font-family:var(--calc-font-mono);color:var(--calc-text-primary);border:1px solid #22d3ee2e;border-left:3px solid var(--calc-cyan);background:#22d3ee0f;border-radius:10px;margin-bottom:16px;padding:14px 16px;font-size:1rem;line-height:1.6}.steps-section{margin-top:4px}.steps-header{text-transform:uppercase;letter-spacing:.07em;color:var(--calc-text-muted,var(--calc-text-faded));font-size:.75rem;font-weight:700;font-family:var(--calc-font-mono);margin-bottom:12px}.truth-table{flex-direction:column;gap:4px;display:flex}.truth-row{grid-template-columns:repeat(var(--truth-cols,3), 1fr);font-family:var(--calc-font-mono);gap:4px;font-size:.85rem;display:grid}.truth-row--header{color:var(--calc-text-muted,var(--calc-text-faded));text-transform:uppercase;letter-spacing:.05em;font-size:.72rem;font-weight:700}.truth-cell{border:1px solid var(--calc-border-default);text-align:center;background:#ffffff08;border-radius:6px;padding:6px 8px}.truth-row--header .truth-cell{background:0 0;border:none;padding:2px 8px}.truth-row.is-active .truth-cell{color:var(--calc-purple);background:#a855f71f;border-color:#a855f759;font-weight:700}.bitview-note{color:var(--calc-text-muted,var(--calc-text-faded));margin-bottom:14px;font-size:.8rem}.bit-table{flex-direction:column;gap:10px;display:flex}.bit-row{align-items:center;gap:10px;display:flex}.bit-row-label{font-family:var(--calc-font-mono);text-transform:uppercase;letter-spacing:.05em;width:46px;color:var(--calc-text-muted,var(--calc-text-faded));flex-shrink:0;font-size:.75rem;font-weight:700}.bit-row--a .bit-row-label{color:var(--calc-cyan)}.bit-row--b .bit-row-label{color:var(--calc-sky)}.bit-row--result .bit-row-label{color:var(--calc-purple)}.bit-cells{flex-wrap:wrap;gap:3px;display:flex}.bit-cell{width:26px;height:26px;font-family:var(--calc-font-mono);border:1px solid var(--calc-border-default);color:var(--calc-text-muted,var(--calc-text-faded));background:#ffffff08;border-radius:5px;justify-content:center;align-items:center;font-size:.85rem;font-weight:700;display:inline-flex}.bit-cell--nibble-start{margin-left:8px}.bit-cell--one{color:var(--calc-text-primary)}.bit-row--a .bit-cell--one{color:var(--calc-cyan);background:#22d3ee29;border-color:#22d3ee66}.bit-row--b .bit-cell--one{color:var(--calc-sky);background:#60a5fa29;border-color:#60a5fa66}.bit-row--result .bit-cell--one{color:var(--calc-purple);background:#a855f729;border-color:#a855f766}.shift-controls{flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:18px;display:flex}.shift-visual{flex-direction:column;align-items:flex-start;gap:8px;display:flex}.shift-row{align-items:center;gap:10px;display:flex}.shift-row-label{font-family:var(--calc-font-mono);text-transform:uppercase;letter-spacing:.05em;width:52px;color:var(--calc-text-muted,var(--calc-text-faded));flex-shrink:0;font-size:.75rem;font-weight:700}.shift-arrow{color:var(--calc-purple);padding-left:62px;font-size:1.1rem}.shift-note{border:1px solid #a855f733;border-left:3px solid var(--calc-purple);color:var(--calc-text-dim);background:#a855f70f;border-radius:10px;margin-top:14px;padding:12px 14px;font-size:.85rem;line-height:1.6}.result-interpretation{border-top:1px solid var(--calc-border-default);color:var(--calc-text-faded);margin-top:18px;padding-top:16px;font-size:.88rem;line-height:1.6}.faq-list{flex-direction:column;display:flex}.faq-item{border-bottom:1px solid #ffffff0f}.faq-item__question{cursor:pointer;color:var(--calc-text-primary);user-select:none;justify-content:space-between;align-items:center;padding:14px 4px;font-size:.9rem;font-weight:600;list-style:none;transition:color .2s;display:flex}.faq-item__question::-webkit-details-marker{display:none}.faq-item__question:after{content:"+";font-family:var(--calc-font-mono);color:var(--calc-text-dim);flex-shrink:0;margin-left:16px;font-size:1.1rem;transition:color .2s}.faq-item[open] .faq-item__question:after{content:"−";color:var(--calc-cyan)}.faq-item__question:hover{color:var(--calc-cyan)}.faq-item__answer{color:var(--calc-text-dim);padding:0 4px 14px;font-size:.85rem;line-height:1.75}@media (width<=480px){.main-container{padding:0 12px 24px}.bit-cell{width:22px;height:22px;font-size:.75rem}.outer-tab-btn{padding:8px 10px;font-size:.8rem}.shift-arrow{padding-left:0}}[data-theme=light] .page-title{background:linear-gradient(135deg,#0891b2,#7c3aed);-webkit-background-clip:text;background-clip:text}[data-theme=light] .calculator-card,[data-theme=light] .result-panel{background:#fff;border-color:#0000001a;box-shadow:0 2px 12px #00000012}[data-theme=light] .glass-input,[data-theme=light] .form-group input{color:#0f172a;background:#f0f4f9;border-color:#00000026}[data-theme=light] .glass-input option{color:#0f172a;background:#fff}[data-theme=light] .form-group input:focus{border-color:#0891b2;box-shadow:0 0 0 3px #0891b21f}[data-theme=light] .form-group label{color:#475569}[data-theme=light] .input-hint{color:#64748b}[data-theme=light] .action-btn{color:#64748b;border-color:#00000026}[data-theme=light] .action-btn:hover{color:#0891b2;border-color:#0891b2}[data-theme=light] .result-detail{color:#475569}[data-theme=light] .hero-line-label{color:#64748b}[data-theme=light] .hero-line-value{color:#0f172a}[data-theme=light] .hero-line--primary .hero-line-value{color:#7c3aed}[data-theme=light] .hero-line--negative .hero-line-value{color:#e11d48}[data-theme=light] .outer-tabs-bar{border-bottom-color:#0000001f}[data-theme=light] .outer-tab-btn{color:#475569}[data-theme=light] .outer-tab-btn.active{color:#0891b2;border-bottom-color:#0891b2}[data-theme=light] .op-equation{color:#0f172a;background:#0891b20f;border-color:#0891b233 #0891b233 #0891b233 #0891b2}[data-theme=light] .steps-header,[data-theme=light] .truth-row--header{color:#64748b}[data-theme=light] .truth-cell{color:#334155;background:#f8fafc;border-color:#0000001a}[data-theme=light] .truth-row--header .truth-cell{background:0 0;border:none}[data-theme=light] .truth-row.is-active .truth-cell{color:#7c3aed;background:#7c3aed14;border-color:#7c3aed4d}[data-theme=light] .bitview-note{color:#64748b}[data-theme=light] .bit-row--a .bit-row-label{color:#0891b2}[data-theme=light] .bit-row--b .bit-row-label{color:#2563eb}[data-theme=light] .bit-row--result .bit-row-label{color:#7c3aed}[data-theme=light] .bit-cell{color:#94a3b8;background:#f8fafc;border-color:#0000001f}[data-theme=light] .bit-row--a .bit-cell--one{color:#0891b2;background:#0891b21f;border-color:#0891b259}[data-theme=light] .bit-row--b .bit-cell--one{color:#2563eb;background:#2563eb1f;border-color:#2563eb59}[data-theme=light] .bit-row--result .bit-cell--one{color:#7c3aed;background:#7c3aed1f;border-color:#7c3aed59}[data-theme=light] .shift-row-label{color:#64748b}[data-theme=light] .shift-arrow{color:#7c3aed}[data-theme=light] .shift-note{color:#334155;background:#7c3aed0f;border-color:#7c3aed33 #7c3aed33 #7c3aed33 #7c3aed}[data-theme=light] .result-interpretation{color:#475569;border-top-color:#0000001a}[data-theme=light] .faq-list{gap:8px}[data-theme=light] .faq-item{background:#fff;border:1px solid #0000001a;border-radius:10px;transition:box-shadow .2s,border-color .2s;overflow:hidden;box-shadow:0 1px 4px #0000000f}[data-theme=light] .faq-item:hover{border-color:#0891b259;box-shadow:0 2px 10px #0891b214}[data-theme=light] .faq-item[open]{border-color:#0891b266 #0891b266 #0891b266 #0891b2;border-left-style:solid;border-left-width:3px;box-shadow:0 2px 12px #0891b21a}[data-theme=light] .faq-item__question{color:#0f172a;padding:14px 16px}[data-theme=light] .faq-item__question:after{color:#64748b}[data-theme=light] .faq-item[open] .faq-item__question:after,[data-theme=light] .faq-item__question:hover{color:#0891b2}[data-theme=light] .faq-item__answer{color:#475569;border-top:1px solid #0000000f;padding:12px 16px 16px}