.subject-hero{display:flex;align-items:center;gap:18px;margin:20px 0 28px}.s-badge{width:56px;height:56px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;background:var(--warm-dim)}.subject-hero h2{font-size:1.5rem}.subject-hero p{font-size:.85rem;color:var(--text-secondary)}.tabs{display:flex;gap:2px;border-bottom:1px solid var(--border);margin-bottom:28px;overflow-x:auto}.tab{padding:12px 20px;font-size:.85rem;font-weight:500;color:var(--text-dim);border:none;border-bottom:2px solid transparent;background:none;font-family:inherit;transition:all .2s;white-space:nowrap;text-decoration:none;cursor:pointer;display:inline-block}.tab:hover{color:var(--text);text-decoration:none}.tab.active{color:var(--accent);border-bottom-color:var(--accent);font-weight:700}.algo-tabs{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:24px}.algo-tab{padding:8px 16px;border-radius:8px;border:1px solid var(--border);background:var(--surface);color:var(--text-dim);font-family:inherit;font-size:.85rem;cursor:pointer;transition:all .2s}.algo-tab:hover{border-color:var(--accent);color:var(--text)}.algo-tab.active{border-color:var(--accent);background:var(--accent-dim);color:var(--accent);font-weight:700}.sort-input-row{margin-bottom:16px;display:flex;flex-direction:column;gap:6px}.sel-label{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--text-dim)}.sort-input-wrap{display:flex;gap:8px;align-items:center}.sort-input{padding:9px 14px;border-radius:10px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-family:monospace;font-size:.9rem;flex:1;max-width:360px}.sort-input:focus{outline:none;border-color:var(--accent)}.ctrl-btn-sm{padding:7px 14px;border-radius:8px;border:1px solid var(--border);background:var(--surface);color:var(--text-dim);font-family:inherit;font-size:.82rem;cursor:pointer}.ctrl-btn-sm:hover{border-color:var(--accent);color:var(--accent)}.viz-area{height:200px;background:var(--surface);border:1px solid var(--border);border-radius:12px;overflow:hidden;padding:16px 12px 0;margin-bottom:12px}.bars-wrap{display:flex;align-items:flex-end;gap:4px;height:100%}.bar{flex:1;border-radius:4px 4px 0 0;background:var(--surface-2);border:1px solid var(--border);display:flex;align-items:flex-end;justify-content:center;padding-bottom:4px;transition:background .2s;min-width:20px}.bar-val{font-size:.72rem;font-weight:700;color:var(--text-dim)}.bar-compare{background:color-mix(in srgb,var(--accent) 40%,var(--surface));border-color:var(--accent)}.bar-compare .bar-val{color:var(--accent)}.bar-min{background:color-mix(in srgb,#f59e0b 50%,var(--surface));border-color:#f59e0b}.bar-min .bar-val{color:#f59e0b}.bar-sorted{background:color-mix(in srgb,#22c55e 35%,var(--surface));border-color:#22c55e}.bar-sorted .bar-val{color:#22c55e}.legend{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:12px}.leg-item{display:flex;align-items:center;gap:6px;font-size:.78rem;color:var(--text-dim)}.leg-box{width:14px;height:14px;border-radius:3px;border:1px solid var(--border)}.leg-default{background:var(--surface-2)}.leg-compare{background:color-mix(in srgb,var(--accent) 40%,var(--surface));border-color:var(--accent)}.leg-min{background:color-mix(in srgb,#f59e0b 50%,var(--surface));border-color:#f59e0b}.leg-sorted{background:color-mix(in srgb,#22c55e 35%,var(--surface));border-color:#22c55e}.step-desc{font-size:.88rem;color:var(--text-secondary);background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:10px 14px;margin-bottom:12px;min-height:40px}.controls{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding-bottom:16px}.ctrl-btn{padding:8px 18px;border-radius:8px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-family:inherit;font-size:.85rem;cursor:pointer;transition:all .15s}.ctrl-btn:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}.ctrl-btn:disabled{opacity:.35;cursor:default}.ctrl-primary{background:var(--accent);color:#fff;border-color:var(--accent)}.ctrl-primary:hover:not(:disabled){opacity:.85;color:#fff}.step-info{font-size:.82rem;color:var(--text-dim)}.graf-info{margin-bottom:16px;font-size:.88rem;color:var(--text-secondary)}.graf-input-row{display:flex;align-items:center;gap:10px;margin-top:10px}.sel-sm{padding:7px 12px;border-radius:8px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-family:inherit;font-size:.85rem;cursor:pointer}.sel-sm:focus{outline:none;border-color:var(--accent)}.graf-wrap{margin-bottom:12px}.graf-svg{width:100%;max-width:500px;display:block}.graf-edge{stroke:var(--border-hover);stroke-width:2}.graf-node{fill:var(--surface);stroke:var(--border-hover);stroke-width:2;transition:fill .2s,stroke .2s}.node-visited{fill:color-mix(in srgb,#22c55e 30%,var(--surface));stroke:#22c55e}.node-current{fill:color-mix(in srgb,var(--accent) 40%,var(--surface));stroke:var(--accent);stroke-width:3}.graf-label{text-anchor:middle;font-family:Satoshi,sans-serif;font-size:14px;font-weight:700;fill:var(--text);pointer-events:none}.graf-state{min-height:28px;margin-bottom:8px}.graf-state-text{font-size:.82rem;font-family:monospace;color:var(--text-secondary);background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:5px 10px;display:inline-block}@media(max-width:600px){.algo-tabs{gap:4px}.algo-tab{font-size:.78rem;padding:7px 10px}}