.math-bit-mask-grid{display:flex;gap:4px;flex-wrap:wrap;justify-content:center}.math-bit-mask-cell{width:40px;display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 0 8px;border:2px solid var(--math-border);border-radius:8px;cursor:pointer;transition:all .2s ease;-webkit-user-select:none;user-select:none;background:var(--math-surface)}.math-bit-mask-cell:hover{border-color:var(--math-primary);background:var(--math-primary-soft)}.math-bit-mask-cell.active{border-color:var(--math-primary);background:var(--math-primary);color:#fff}.math-bit-mask-cell.active .math-bit-mask-label{color:#ffffffb3}.math-bit-mask-cell.active .math-bit-mask-val{color:#fff}.math-bit-mask-label{font-size:9px;font-weight:600;color:var(--math-text-muted);font-family:SF Mono,monospace}.math-bit-mask-val{font-size:16px;font-weight:700;font-family:SF Mono,Fira Code,Consolas,monospace;color:var(--math-text)}.math-bitmask-viz{margin:14px 0 12px;overflow-x:auto;-webkit-overflow-scrolling:touch}.math-bitmask-viz-row{display:flex;gap:4px;justify-content:center;flex-wrap:nowrap;min-width:max-content;padding:2px 2px 6px}.math-bitmask-viz-cell{position:relative;flex:0 0 auto;width:34px;display:flex;flex-direction:column;align-items:center;gap:4px;padding:8px 0 6px;border:1.5px solid var(--math-border);border-radius:8px;background:var(--math-surface);transition:all .18s ease}.math-bitmask-viz-cell.is-on{border-color:var(--math-primary);background:color-mix(in srgb,var(--math-primary) 10%,var(--math-surface))}.math-bitmask-viz-cell.is-emph{border-color:var(--math-primary);background:var(--math-primary);box-shadow:0 2px 8px color-mix(in srgb,var(--math-primary) 35%,transparent)}.math-bitmask-viz-cell.is-emph .math-bitmask-viz-bit,.math-bitmask-viz-cell.is-emph .math-bitmask-viz-pos{color:#fff}.math-bitmask-viz-cell.is-dim{opacity:.45}.math-bitmask-viz-cell.has-nibble-break{margin-right:10px}.math-bitmask-viz-bit{font-family:SF Mono,Fira Code,Consolas,monospace;font-size:15px;font-weight:700;color:var(--math-text);line-height:1}.math-bitmask-viz-cell.is-on:not(.is-emph) .math-bitmask-viz-bit{color:var(--math-primary)}.math-bitmask-viz-pos{font-family:SF Mono,monospace;font-size:9px;font-weight:600;color:var(--math-text-muted);line-height:1}.math-bitmask-summary{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-top:6px}.math-bitmask-chip{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border:1px solid var(--math-border);border-radius:999px;background:var(--math-surface-alt, var(--math-surface));font-size:12px}.math-bitmask-chip-key{color:var(--math-text-muted);font-weight:600;text-transform:uppercase;letter-spacing:.04em;font-size:10px}.math-bitmask-chip-val{color:var(--math-text);font-weight:700}.math-bitmask-chip-val--mono{font-family:SF Mono,Fira Code,Consolas,monospace}.math-bitmask-combined{margin-top:18px;padding-top:16px;border-top:1px solid var(--math-border-light)}.math-bitmask-op-viz{margin:12px 0;padding:12px 10px;border:1px solid var(--math-border-light);border-radius:10px;background:var(--math-surface-alt, var(--math-surface));overflow-x:auto;-webkit-overflow-scrolling:touch}.math-bitmask-op-row{display:flex;align-items:center;gap:14px;min-width:max-content}.math-bitmask-op-row+.math-bitmask-op-row{margin-top:4px}.math-bitmask-op-label{flex:0 0 auto;min-width:68px;display:flex;flex-direction:column;gap:2px;text-align:right}.math-bitmask-op-label-main{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--math-text-soft)}.math-bitmask-op-label-sub{font-family:SF Mono,monospace;font-size:12px;color:var(--math-text-muted);font-weight:600}.math-bitmask-op-sign{font-family:SF Mono,monospace;font-size:14px;font-weight:800;color:var(--math-primary);text-align:center;margin:6px 0 6px 82px;letter-spacing:.12em;text-transform:uppercase}.math-bitmask-op-divider{height:2px;background:linear-gradient(to right,transparent,var(--math-border) 10%,var(--math-border) 90%,transparent);margin:8px 0 6px 82px}.math-bitmask-op-hint{margin-top:10px;padding:10px 12px;border-radius:8px;background:var(--math-primary-soft);color:var(--math-text);font-size:12.5px;line-height:1.5}.math-bitmask-op-hint b{color:var(--math-primary);font-weight:700}@media(max-width:640px){.math-bitmask-viz-cell{width:30px;padding:6px 0 5px}.math-bitmask-viz-bit{font-size:13px}.math-bitmask-viz-pos{font-size:8px}.math-bitmask-viz-cell.has-nibble-break{margin-right:8px}.math-bitmask-op-row{gap:10px}.math-bitmask-op-label{min-width:54px}.math-bitmask-op-label-main{font-size:10px}.math-bitmask-op-label-sub{font-size:11px}.math-bitmask-op-sign,.math-bitmask-op-divider{margin-left:64px}}