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.bt-cell.fail{background:#450a0a!important;border-color:#dc2626!important}[data-theme=dark] .bt-cell.safe{background:#052e16!important;border-color:#16a34a!important}.speed-wrap{color:var(--text-muted);flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;display:flex}.speed-wrap input[type=range]{width:120px;accent-color:var(--primary)}.speed-label{color:var(--text);font-weight:600}.matrix-viz{background:var(--surface);border:1px solid var(--border);border-radius:10px;gap:4px;margin:16px auto;padding:8px;display:inline-grid}.matrix-viz-wrap{text-align:center;overflow-x:auto}.mx-cell{width:46px;height:46px;font-family:var(--font-mono,"JetBrains Mono", monospace);background:var(--surface2);border:1px solid var(--border);color:var(--text-muted);border-radius:5px;justify-content:center;align-items:center;font-size:.8rem;font-weight:600;transition:background .2s,border-color .2s,color .2s,transform .15s;display:flex}.mx-cell.diag-main{color:#93c5fd;background:#1d4ed840;border-color:#1d4ed8;font-weight:700}.mx-cell.diag-sec{color:#c4b5fd;background:#7c3aed40;border-color:#7c3aed;font-weight:700}.mx-cell.both-diag{color:#fca5a5;background:#991b1b59;border-color:#991b1b;font-weight:700}.mx-cell.tri-upper{color:#5eead4;background:#0f766e33;border-color:#0f766e}.mx-cell.tri-lower{color:#fcd34d;background:#b4530933;border-color:#b45309}.mx-cell.border-cell{color:#f9a8d4;background:#be185d33;border-color:#be185d}.matrix-zone-btns{flex-wrap:wrap;gap:8px;margin:16px 0 10px;display:flex}.matrix-zone-btns .btn{padding:6px 12px;font-size:12px}.matrix-legend{flex-wrap:wrap;justify-content:center;gap:12px 20px;margin-top:12px;display:flex}.mx-legend-item{color:var(--text-muted);align-items:center;gap:6px;font-size:12px;display:flex}.mx-legend-color{border-radius:3px;flex-shrink:0;width:14px;height:14px}.call-stack{background:var(--surface);border:2px solid var(--border);border-radius:12px;flex-direction:column-reverse;gap:5px;min-height:180px;max-height:340px;padding:16px;display:flex;overflow-y:auto}[data-theme=dark] .call-stack{background:var(--surface2)}.stack-frame-push{background:var(--blue,#3b82f6);color:#fff;border-radius:7px;padding:8px 16px;font-size:14px;font-weight:700;transition:all .35s;animation:.3s slideInLeft}.stack-frame-pop{background:var(--green,#22c55e);color:#fff}@keyframes slideInLeft{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}.fact-result{color:var(--green,#22c55e);min-height:26px;margin-top:12px;font-size:15px;font-weight:700}.vec-track{background:var(--surface);border:1px solid var(--border);border-radius:10px;flex-wrap:wrap;align-items:center;gap:4px;min-height:80px;margin:12px 0;padding:12px;display:flex}.vec-block{width:52px;height:52px;font-family:var(--font-mono,monospace);background:var(--surface2);border:2px solid var(--border);border-radius:7px;justify-content:center;align-items:center;font-size:14px;font-weight:700;transition:all .25s;display:flex}.vec-block.empty{color:var(--text-muted);border-style:dashed}.vec-block.highlight{background:var(--primary-dim);border-color:var(--primary);color:var(--primary)}.vec-block.found{color:#15803d;background:#dcfce7;border-color:#16a34a}.vec-block.comparing{color:#92400e;background:#fef9c3;border-color:#ca8a04}.vec-block.removing{color:#dc2626;background:#fef2f2;border-color:#ef4444}.vec-status{color:var(--text-muted);background:var(--surface);border:1px solid var(--border);border-radius:8px;min-height:22px;padding:8px 12px;font-size:13px}.warning-banner{background:#f59e0b1a;border:1px solid #f59e0b66;border-left:4px solid #f59e0b;border-radius:10px;align-items:flex-start;gap:12px;margin:20px 0;padding:16px 20px;display:flex}.warning-banner .warning-icon{flex-shrink:0;margin-top:1px;font-size:1.3rem}.warning-banner .warning-content{font-size:.9rem;line-height:1.65}.warning-banner .warning-content strong{color:#f59e0b}.warning-banner .warning-content code{color:#f59e0b;font-family:var(--font-mono,monospace);background:#f59e0b26;border-radius:3px;padding:1px 5px}@media(max-width:560px){.bt-cell{width:44px;height:44px;font-size:1.2rem}.mx-cell{width:36px;height:36px;font-size:.7rem}.vec-block{width:42px;height:42px;font-size:12px}.matrix-zone-btns{gap:6px}.matrix-zone-btns .btn{padding:5px 9px;font-size:11px}}.difficulty-badge{text-transform:uppercase;letter-spacing:.4px;border-radius:99px;align-items:center;gap:4px;padding:2px 8px;font-size:11px;font-weight:700;display:inline-flex}.difficulty-badge.easy{color:#10b981;background:#10b9811f}.difficulty-badge.medium{color:#f59e0b;background:#f59e0b1f}.difficulty-badge.hard{color:#ef4444;background:#ef44441f}.cal-day{aspect-ratio:1;cursor:default;background:var(--color-background,#0f172a);color:var(--color-text-muted,#64748b);border:1px solid #0000;border-radius:8px;justify-content:center;align-items:center;font-size:13px;font-weight:500;transition:transform .15s;display:flex}.cal-day--empty{background:0 0}.cal-day--studied{color:#fff;background:linear-gradient(135deg,#0369a1,#0ea5e9);font-weight:700;box-shadow:0 2px 8px #0ea5e94d}.cal-day--today{color:#fbbf24;background:#f59e0b2e;border:3px solid #f59e0b;font-weight:800;position:relative;box-shadow:0 0 10px #f59e0b73}.cal-day--today:after{content:"";background:#f59e0b;border-radius:50%;width:5px;height:5px;position:absolute;bottom:3px;left:50%;transform:translate(-50%)}.cal-day--today.cal-day--studied{color:#fff;background:linear-gradient(135deg,#0369a1,#0ea5e9);border-color:#f59e0b;box-shadow:0 0 0 3px #f59e0b66,0 2px 8px #0ea5e94d}.cal-day--today.cal-day--studied:after{background:#fbbf24}.cal-day--future{opacity:.3}.cal-day:not(.cal-day--empty):hover{z-index:1;transform:scale(1.1)}.card-progress{background:var(--border);border-radius:99px;height:3px;margin-top:12px;overflow:hidden}.card-progress-fill{background:linear-gradient(90deg,var(--primary) 0%,#a855f7 100%);border-radius:99px;width:0;height:100%;transition:width .8s cubic-bezier(.4,0,.2,1) .3s}.chapter-card{position:relative;overflow:hidden}.chapter-card:after{content:"";border-radius:inherit;background:linear-gradient(var(--surface),var(--surface)) padding-box,linear-gradient(135deg,var(--primary),#a855f7,#06b6d4) border-box;opacity:0;transition:opacity var(--transition);pointer-events:none;border:2px solid #0000;position:absolute;inset:0}.chapter-card:hover:after{opacity:1}@keyframes pulse-dot{0%,to{opacity:1;transform:scale(1)}50%{opacity:.6;transform:scale(1.5)}}.hero-eyebrow-dot{background:#10b981;border-radius:50%;width:7px;height:7px;margin-right:6px;animation:2s ease-in-out infinite pulse-dot;display:inline-block}.hero h1,.hero-inner h1,.chapter-hero h1{font-family:var(--font-display)}.xp-toast{background:var(--surface);border:1px solid var(--primary);color:var(--primary);z-index:3000;opacity:0;pointer-events:none;border-radius:12px;padding:12px 20px;font-size:14px;font-weight:700;transition:transform .35s cubic-bezier(.4,0,.2,1),opacity .35s;position:fixed;bottom:24px;right:24px;transform:translateY(80px);box-shadow:0 8px 32px #6366f140}.xp-toast.show{opacity:1;transform:translateY(0)}.chapter-hero-tag{cursor:pointer;transition:background var(--transition),color var(--transition)}.chapter-hero-tag:hover{background:var(--primary-dim);color:var(--primary)}.logo-svg-icon{flex-shrink:0;width:32px;height:32px}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.gradient-bg{background:linear-gradient(135deg,var(--primary) 0%,#a855f7 50%,#06b6d4 100%)}.glow{box-shadow:0 0 32px #6366f140}[data-theme=dark] .glow{box-shadow:0 0 32px #818cf859}.chart-section{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin:32px 0;padding:24px}.chart-section h3{margin-bottom:16px;font-size:16px;font-weight:700}.chart-wrapper{height:280px;position:relative}.chart-controls{flex-wrap:wrap;align-items:center;gap:12px;margin-top:12px;display:flex}.chart-controls label{color:var(--text-muted);font-size:13px}.chart-controls input[type=range]{width:180px;accent-color:var(--primary)}@media(max-width:768px){.search-dialog{width:95vw;max-width:95vw;margin:10px}}@media(max-width:480px){.search-dialog{border-radius:0;width:100vw;max-width:100vw;height:100vh;margin:0}.search-footer{flex-wrap:wrap;gap:6px;font-size:11px}}pre,.sheet-card-body pre,code{-webkit-overflow-scrolling:touch}pre::-webkit-scrollbar{height:4px}pre::-webkit-scrollbar-track{background:var(--surface);border-radius:2px}pre::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}[role=code]{font-family:var(--mono)}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-font-weight{syntax:"*";inherits:false}@property --tw-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-shadow-color{syntax:"*";inherits:false}@property --tw-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-inset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-shadow-color{syntax:"*";inherits:false}@property --tw-inset-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-ring-color{syntax:"*";inherits:false}@property --tw-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-inset-ring-color{syntax:"*";inherits:false}@property --tw-inset-ring-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-ring-inset{syntax:"*";inherits:false}@property --tw-ring-offset-width{syntax:"<length>";inherits:false;initial-value:0}@property --tw-ring-offset-color{syntax:"*";inherits:false;initial-value:#fff}@property --tw-ring-offset-shadow{syntax:"*";inherits:false;initial-value:0 0 #0000}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}@property --tw-backdrop-blur{syntax:"*";inherits:false}@property --tw-backdrop-brightness{syntax:"*";inherits:false}@property --tw-backdrop-contrast{syntax:"*";inherits:false}@property --tw-backdrop-grayscale{syntax:"*";inherits:false}@property --tw-backdrop-hue-rotate{syntax:"*";inherits:false}@property --tw-backdrop-invert{syntax:"*";inherits:false}@property --tw-backdrop-opacity{syntax:"*";inherits:false}@property --tw-backdrop-saturate{syntax:"*";inherits:false}@property --tw-backdrop-sepia{syntax:"*";inherits:false}@property --tw-ease{syntax:"*";inherits:false}